The purpose of the present invention is to provide: a rubber composition for tires which exhibit excellent processability, wet performance, wear resistance, and chipping resistance; and a tire produced using the composition. This rubber composition for tires comprises a diene-based rubber including a modified conjugated-diene rubber, silica, a silane coupling agent, and an alkyltriethoxysilane, wherein the modified conjugated-diene rubber is a conjugated-diene rubber satisfying a specific expression and having a modification group including a nitrogen atom, a silicon atom, and an oxygen atom adjacent thereto, the proportion of the modified conjugated-diene rubber in the diene-based rubber being 25 mass% or higher.
The present invention addresses the problem of providing: a rubber composition for tires which exhibits excellent processability and gives tires exhibiting excellent rolling performance, wet performance, wear resistance, and chipping resistance; and a tire produced using the rubber composition for tires. This rubber composition for tires comprises a rubber component (A) including a modified conjugated-diene rubber (A1), silica (B), and a silane coupling agent (C), wherein the A1 is a conjugated-diene rubber satisfying a specific expression and having a modification group including a nitrogen atom, a silicon atom, and an oxygen atom adjacent thereto, the proportion of the A1 in the A is 25 mass% or higher, and the C is 3-octanoylthio-1-propyltriethoxysilane or a polysiloxane represented by a specific average empirical formula.
Provided is a tire in which a side block 4 includes: a long block portion 41 disposed overlapping each of first and second shoulder blocks when viewed in a tire radial direction; a short block portion 42 disposed overlapping each of the second shoulder block 322 and the long block portion 41 when viewed in the tire radial direction; and an L-shaped groove 43 that penetrates the side block 4 to partition the long block portion 41 and the short block portion 42. The L-shaped groove 43 is formed by connecting a radial direction groove 431 and a circumferential direction groove 432 in an L-shape. An angle of inclination θ32 of the circumferential direction groove 432 with respect to the tire radial direction is in a range of 45° ≤ θ32 ≤ 135°.
The purpose of the present invention is to provide: a rubber composition for tires which exhibit excellent rolling performance, wet performance, wear resistance, and deterioration resistance; and a tire produced using the composition. This rubber composition for tires comprises a diene-based rubber including a modified conjugated-diene rubber, silica, a silane coupling agent, and an alkyltriethoxysilane, wherein the modified conjugated-diene rubber is a conjugated-diene rubber satisfying a specific expression and having a modification group including a nitrogen atom, a silicon atom, and an oxygen atom adjacent thereto, the proportion of the modified conjugated-diene rubber in the diene-based rubber being 25 mass% or higher.
The present invention addresses the problem of providing: a rubber composition for tires which exhibits excellent mixability and extrudability and gives tires having excellent wet performance, snow performance, and wear resistance; and a tire produced using the rubber composition for tires. This rubber composition for tires comprises a rubber component (A) including a modified conjugated diene-based rubber (A1), silica (B), and a silane coupling agent (C), wherein the component A1 is a conjugated diene-based rubber which satisfies a specific formula and has a modifying group containing a nitrogen atom, a silicon atom, and an oxygen atom adjacent to the silicon atom, the proportion of the component A1 in the component A is 25 mass% or higher, and the component C is 3-octanoylthio-1-propyltriethoxysilane or a polysiloxane represented by a specific average compositional formula.
The purpose of the present invention is to provide: a rubber composition for tires which exhibit excellent resistance to thermal sagging, resistance to wear in circuit running, wet performance, and rolling performance; and a tire produced using the rubber composition. This rubber composition for tires comprises: a rubber component A including a modified conjugated-diene rubber A1; silica B; and a softener C comprising at least one member selected from the group consisting of thermoplastic resins and oils. The A1 is a conjugated-diene rubber satisfying a specific expression and having a modification group including a nitrogen atom, a silicon atom, and an oxygen atom adjacent thereto and accounts for 25 mass% or more of the A. The A as a whole has a glass transition temperature higher than -80°C but not higher than -45°C. The content of the B is 80-160 parts by mass per 100 parts by mass of the A. The content of the thermoplastic resin(s) is 30-80 parts by mass, excluding 80 parts by mass, per 100 parts by mass of the A, and the proportion of the thermoplastic resin(s) to the sum of the thermoplastic resin(s) and the oil(s) is 50 mass% or higher.
The purpose of the present invention is to provide: a tire rubber composition exhibiting excellent on-ice performance, on-snow performance and wet performance, and having excellent green strength; and a tire manufactured by using the tire rubber composition. The present invention relates to a tire rubber composition containing: a diene-based rubber including a modified conjugated diene-based rubber; silica; and a plasticizer, wherein the modified conjugated diene-based rubber satisfies a specific formula and has a modifying group containing a nitrogen atom, a silicon atom, and an oxygen atom adjacent thereto, the proportion of the modified conjugated diene-based rubber in the diene-based rubber is more than 15 mass% and not more than 50 mass%, the content of silica is 30-90 parts by mass per 100 parts by mass of the diene-based rubber, and the content of the plasticizer is 30-80 parts by mass per 100 parts by mass of the diene-based rubber.
Provided is a tire with which an improvement in rough road running performance can be achieved while ensuring excellent block durability. A plurality of shoulder blocks (12) are provided in a shoulder region of a tread portion (1), a plurality of side blocks (13) are provided in a side region that is adjacent to the shoulder region on the outer side thereof in the width direction of the tire, one side block (13) is disposed in a position on the outer side, in the width direction of the tire, of a block group comprising two or more shoulder blocks (12) adjacent to one other in the circumferential direction of the tire, and if a surface comprising side surfaces of the shoulder blocks (12) included in the block group and a top surface of the side block 13 is defined as an upper layer surface, a first recessed portion (15) including a middle layer surface that is recessed by 0.2 mm or more from the upper layer surface is provided on the center side of the upper layer surface, and a second recessed portion (16) including a lower layer surface that is recessed by 0.2 mm or more from the middle layer surface is provided on the center side of the middle layer surface.
B60C 11/13 - Sculptures des bandes de roulement caractérisées par la section transversale de la rainure, p.ex. pour étayer les parois, ou pour empêcher le coincement de pierres
B60C 13/00 - Flancs du pneumatique; Protection, décoration, marquage ou opérations similaires concernant ces derniers
This tire comprises a pair of bead portions 10 in which a bead core 11 and a bead portion rubber 30 having a volume resistivity of less than 1×10^8 [Ω·cm] are arranged, at least one carcass layer 13 having a volume resistivity of 1×10^8 [Ω·cm] or more and spanning the pair of bead portions 10, a belt layer 14 disposed on the tire radial direction outer side of the carcass layer 13, a tread rubber 15 disposed on the tire radial direction outer side of the belt layer 14, and an electrically conductive member 50 that is formed in the shape of a sheet, has a volume resistivity of less than 1×10^8 [Ω·cm], and extends continuously from a position on a tire inner surface 25 that overlaps at least an end portion 144 of the belt layer 14 in the tire width direction to the bead portion 10, wherein an inner end portion 51, in the tire radial direction, of the electrically conductive member 50 is covered by the bead portion rubber 30 disposed in the bead portion 10, thereby making it possible for the electrical resistance of the tire to be continuously reduced.
B60C 19/08 - Dispositifs pour écouler les charges électriques
B60C 5/14 - Pneumatiques ou chambres intérieures gonflables sans éléments internes gonflables distincts, p.ex. pneumatiques sans chambre à air dont la section transversale est ouverte sur la jante avec chemise ou revêtement imperméable sur la paroi intérieure du pneumatique
B60C 9/04 - Carcasses les fils de renforcement de chaque pli de la carcasse étant sensiblement parallèles
B60C 11/00 - Bandes de roulement des pneumatiques; Sculptures des bandes de roulement; Pièces rapportées antidérapantes
B60C 15/00 - Talons du pneumatique, p.ex. relèvement ou recouvrement de nappe
B60C 15/06 - Pointes de gomme, garnitures, toiles de frottement
The tire 1 is provided with a plurality of shoulder lug grooves 311 which extend to a buttress portion beyond a ground-contact end T of the tire. In addition, the plurality of shoulder lug grooves 311 each have a protrusion 5 which protrudes from the groove bottom of the shoulder lug groove 311 and is disposed further outward in a tire width direction than the ground-contact end T of the tire. In addition, the distance D1 from the ground-contact end T of the tire to the protrusion 5 in the tire width direction is in a range of 0.02 ≤ D1/SH ≤ 0.15 with respect to the cross-sectional height SH of the tire.
B60C 11/13 - Sculptures des bandes de roulement caractérisées par la section transversale de la rainure, p.ex. pour étayer les parois, ou pour empêcher le coincement de pierres
B60C 13/00 - Flancs du pneumatique; Protection, décoration, marquage ou opérations similaires concernant ces derniers
12 - Véhicules; appareils de locomotion par terre, par air ou par eau; parties de véhicules
Produits et services
TIRES FOR AUTOMOBILES; TIRES FOR VEHICLES; TIRES; TIRES FOR TWO-WHEELED MOTOR VEHICLES; WHEELS FOR AUTOMOBILES AND VEHICLES; WHEELS; WHEELS FOR TWO-WHEELED MOTOR VEHICLES; WHEEL RIMS FOR AUTOMOBILES; WHEEL RIMS FOR TWO-WHEELED MOTOR VEHICLES; WHEEL RIMS (FOR AUTOMOBILES AND VEHICLES); TIRE LINERS, FLAPS; PROTECTIVE LINERS FOR THE INNER PART OF TIRES (PARTS AND FITTINGS); INNER TUBES FOR AUTOMOBILE TIRES; INNER TUBES FOR VEHICLE TIRES
Provided is a tire that can improve steering stability on snowy road surfaces and can reduce extravehicular noise. The present invention is a tire, having a designated direction for mounting onto a vehicle, wherein: an inner shoulder narrow groove 31 and a plurality of inner shoulder lug grooves 41 are formed in an inner shoulder land section 21; a narrow rib 61 is demarcated between the inner shoulder narrow groove 31 and a first main groove 11; a circumferential-direction auxiliary groove 31, a plurality of first lug grooves 42, and a plurality of first sipes 52 are formed in an inner intermediate land section 22; a narrow rib 62 is demarcated between the circumferential-direction auxiliary groove 32 and a second main groove 12; a plurality of second lug grooves 43 and a plurality of second sipes 53 are formed in a center land section 23; a plurality of third lug grooves 44 and a plurality of third sipes 54 are formed in an outer intermediate land section 24; an outer shoulder narrow groove 35 and a plurality of outer shoulder lug grooves 45 are formed in an outer shoulder land section 25; and a narrow rib 65 is demarcated between the outer shoulder narrow groove 35 and a fourth main groove 14.
A marine hose has a twist coefficient 1900≤K≤2900 of fiber cords constituting a fiber reinforced member with three or four twisted filaments made of polyester, an interrelationship R between a predetermined elongation ratio E2 of a plurality of types of the fiber cords having different specifications and a hose elongation ratio E1 in a predetermined expansion test of each of marine hoses in which the fiber reinforced member including the respective fiber cords as constituent members is embedded as reinforcing layers is determined in advance. A threshold Th of the ratio E2 is set based on a standard value of hose elongation ratio E1 in the predetermined expansion test and the interrelationship R and the predetermined elongation ratio E2 of the fiber cords used as the reinforcing layers is set to the threshold Th or less.
In a solid tire including a tread rubber layer on a road contact surface side and a base rubber layer on a rim side and having a side surface extending in a tire radial direction from the tread rubber layer to the base rubber layer, an RFID tag is embedded inside the solid tire, and the RFID tag is disposed near the side surface. When forming an unvulcanized tire by winding a rubber sheet into multiple layers, the RFID tag is inserted between layers of the rubber sheet in the middle of the winding into multiple layers, or the RFID tag and a coating layer are overlaid and attached on a side surface of the unvulcanized tire, and then the unvulcanized tire including the RFID tag is vulcanized in a mold.
In a solid tire including a tread rubber layer on a road contact surface side and a base rubber layer on a rim side, the base rubber layer has JIS-A hardness of 80 or higher, and an RFID tag is embedded in the base rubber layer. When forming an unvulcanized tire by winding a rubber sheet into multiple layers, the RFID tag is inserted between layers of the rubber sheet in the middle of the winding into multiple layers, or the RFID tag and a coating layer are overlaid and attached on a side surface of the unvulcanized tire, and then the unvulcanized tire including the RFID tag is vulcanized in a mold.
Provided is a heavy-load pneumatic tire capable of maintaining or improving rolling resistance, uneven wear resistance performance, and durability, and achieving a high level of balance of the properties. In this heavy-load pneumatic tire, a tread rubber layer 10 is composed of a tread rubber formed of a rubber composition in which at most 60 parts by mass of a filler containing carbon black and silica is blended with 100 parts by mass of a rubber component containing at least 90 mass% of an isoprene-based rubber and the blending amount ratio of the carbon black and the silica in the filler is 3:2 to 1:1, a belt cushion layer 40 is composed of a belt cushion rubber formed of a rubber composition in which at most 45 parts by mass of carbon black is blended with 100 parts by mass of a rubber component containing at least 90 mass% of an isoprene-based rubber, and the hardness Hc of the tread rubber and the hardness Hb of the belt cushion rubber satisfy the relationship of 1.2≤Hc/Hb≤1.5.
Provided is a drone that comprises a lighter weight antenna and can maintain a better state of wireless communication with a passive-type IC tag installed on an object to be monitored. Also provided are a monitoring system and a monitoring method using said drone. An antenna 7 constituting a communication device 6 is a two-element patch antenna in which two antenna elements 8 are arranged side-by-side on a lower surface of a reflection plate 9. The reflection plate 9 and each antenna element 8 are formed of an aluminum alloy plate having a thickness of 3 mm or less. The reflection plate 9 is installed on the drone 1 such that a camera through-hole 9a, which is formed at a position between the antenna elements 8 in a center portion of the reflection plate 9, is positioned at a center portion of the drone 1 in plan view. The reflection plate 9 and the antenna elements 8 are visible in a field of view looking up from directly below the drone 1, and a camera device 5 disposed above the reflection plate 9 acquires image data below the drone 1 through the camera through-hole 9a.
G06K 7/10 - Méthodes ou dispositions pour la lecture de supports d'enregistrement par radiation corpusculaire
H01Q 13/08 - Terminaisons rayonnantes de lignes de transmission micro-ondes à deux conducteurs, p.ex. lignes coaxiales ou lignes micro-rayées
H01Q 19/10 - Combinaisons d'éléments actifs primaires d'antennes avec des dispositifs secondaires, p.ex. avec des dispositifs quasi optiques, pour donner à une antenne une caractéristique directionnelle désirée utilisant des surfaces réfléchissantes
H01Q 21/06 - Réseaux d'unités d'antennes, de même polarisation, excitées individuellement et espacées entre elles
18.
THERMOPLASTIC RESIN COMPOSITION FOR REFRIGERANT TRANSPORT HOSE, AND REFRIGERANT TRANSPORT HOSE
The present invention provides a refrigerant transport hose that exhibits good flexibility, good resistance to refrigerant permeation, and good resistance to deterioration. The thermoplastic resin composition for a refrigerant transport hose has a sea-island structure in which an elastomer is present in domain form in a matrix including a thermoplastic resin, said thermoplastic resin composition characterized by comprising 100 parts by mass of an elastomer, 30-100 parts by mass of a thermoplastic resin, and 0.5-10 parts by mass of a hydrotalcite and/or a magnesium-aluminum solid solution, wherein the thermoplastic resin includes 50-100 parts by mass of a polyamide on the basis of 100 parts by mass of the thermoplastic resin, and the elastomer includes an elastomer having a polyisobutylene skeleton.
C08L 77/00 - Compositions contenant des polyamides obtenus par des réactions créant une liaison amide carboxylique dans la chaîne principale; Compositions contenant des dérivés de tels polymères
C08L 101/00 - Compositions contenant des composés macromoléculaires non spécifiés
F16L 11/06 - Manches, c. à d. tuyaux flexibles en caoutchouc ou en matériaux plastiques flexibles à paroi homogène
Provided is a tire that makes it possible to prevent damage to a housing body while improving high-speed durability of a functional component. This tire comprises a functional component 20 having a sensor function for detecting tire information and a housing body 30 in which the functional component 20 is housed. The housing body 30 has a housing part 33 for housing the functional component 20, an opening part 34 for putting in and taking out the functional component 20, the opening part 34 being in communication with the housing part 33, and a side wall part 32 surrounding the periphery of the housing part 33. At least the side wall part 32 is made of an elastic material. The volume Vs [cm3] of the functional component 20, the volume Vc [cm3505050 ≤ 3.0.
A cable protection member includes a cable insertion hole through which a cable is inserted and a pair of protection member sections divided in a diameter direction of the cable insertion hole. The pair of protection member sections include diameter-direction coupling portions to be immovably coupled to each other in the diameter direction of the cable insertion hole with the pair of protection member sections coupled to each other.
A rubber composition for a tire according to the present invention comprises a diene-based rubber, silica, a sulfur-containing silane coupling agent, and an alkylalkoxysilane compound. A blending amount a of the silica is 80-300 parts by mass with respect to 100 parts by mass of the diene-based rubber, and a blending amount b of the sulfur-containing silane coupling agent and the blending amount c of the alkylalkoxysilane compound satisfy the expressions (1) and (2). (1): 0.03 < (b/a) < 0.06, (2): c/b ≥ 1.5
A cylindrical shaped circumferential rib is integrally formed as a base protruding on the outer circumferential surface of a resin pipe. An annular sealant is externally fitted on one end portion of a metal member which is inserted in and fixed to the base to interpose the sealant between the one end portion and the inner circumferential surface of the base, allow the outer circumferential surface of the one end portion to press and restrict the movement of the sealant toward the inner side in the radial direction and toward the trailing end side of the one end portion in the insertion direction, and allow the inner circumferential surface of the base to press and restrict the movement of the sealant toward the outer side in the radial direction and toward the insertion direction distal end side of the one end portion.
F16L 25/00 - Structure ou détails de raccords de tuyaux non prévus dans les groupes ou présentant in intérêt autre que celui visé par ces groupes
F16L 21/02 - Raccords avec manchon ou douille avec segments d'étanchéité élastiques entre le tuyau et le manchon ou entre le tuyau et la douille, p.ex. avec des segments roulants ou autres segments profilés préfabriqués
A rubber composition according to the present invention contains: (A) 100 parts by mass of a rubber component containing at least 50 parts by mass of a diene rubber; and (B) 1-200 parts by mass of a polyolefin having a melting point of 110-155°C and demonstrating either a melt mass flow rate (MFR) exceeding 6 g/10 min when measured at a temperature of 230°C and a load of 2.16 kg or a melt mass flow rate (MFR) of at least 10 g/10 min when measured at a temperature of 190°C and a load of 2.16 kg.
C08L 9/00 - Compositions contenant des homopolymères ou des copolymères d'hydrocarbures à diènes conjugués
C08L 23/00 - Compositions contenant des homopolymères ou des copolymères d'hydrocarbures aliphatiques non saturés ne possédant qu'une seule liaison double carbone-carbone; Compositions contenant des dérivés de tels polymères
A tire includes a pair of bead cores, a carcass layer extended across the bead cores, a belt layer disposed on an outer side of the carcass layer in a radial direction, and a tread portion. A tire outer diameter OD (mm) is in a range 200≤OD≤660. A total tire width SW (mm) is in a range 100≤SW≤400. A groove area ratio Aa of the tread portion is in a range 0.008≤Aa/OD≤0.150. A groove area ratio Ace of a center region of the tread portion and a groove area ratio Ash of a shoulder region of the tread portion have a relationship Ace/Ash>1.
B60C 9/20 - Structure ou disposition des ceintures, des couches de protection, des couronnes de renforcement ou des couches amortissantes constituées par des nappes gommées ayant chacune leurs fils disposés sensiblement en parallèle
A metal flange having unevenness on a surface of an insertion hole is disposed in an insert portion in a cavity body of a mold. A resin pipe is formed by curing molten resin injected into a cavity. The metal flange is fitted to a fixing groove continuous over an entire circumference of an outer circumferential surface of the pipe in a circumferential direction. An outer circumferential surface of the fixing groove enters the unevenness on the surface of the insertion hole. A circumferential rib is formed on at least one side of both ends of the flange in a longitudinal direction of the resin pipe, abuts on an end surface of the flange, has a diameter larger than an outer diameter of the pipe, and is continuous over the entire circumference of the outer circumferential surface of the pipe in the circumferential direction.
F16L 23/024 - Raccords à brides les brides étant raccordées par des organes tendus axialement caractérisés par la façon dont les brides sont fixées ou forment une extension aux tuyaux
B29C 49/20 - Moulage par soufflage, c. à d. en soufflant une préforme ou une paraison dans un moule pour obtenir la forme désirée; Appareils à cet effet d'objets comportant des inserts ou des renforcements
A tire includes a pair of bead cores, a carcass layer extended across the bead cores, a belt layer disposed on an outer side of the carcass layer in a radial direction, and a tread portion. A tire outer diameter OD (mm) is in a range 200≤OD≤660. A total tire width SW (mm) is in a range 100≤SW≤400. A groove area ratio Aa of the tread portion is in a range 0.008≤Aa/OD≤0.150.
B60C 9/20 - Structure ou disposition des ceintures, des couches de protection, des couronnes de renforcement ou des couches amortissantes constituées par des nappes gommées ayant chacune leurs fils disposés sensiblement en parallèle
Provided are: a refrigerant hose capable of ensuring practical durability even if a hose internal pressure of about 5-7 MPa is repeatedly applied, while avoiding an increase in diameter of a reinforcement cord; and a method for manufacturing same. A refrigerant hose 1 is manufactured by: differing fiber cords 4 having an outer diameter of 0.4-0.6 mm for a plurality of specifications; ascertaining the cutting strength at room temperature and the relationship between tensile load and elongation at 150°C of each fiber cord 4 extracted from a sample 7 of a hose molded body using the fiber cords 4 of each specification after the vulcanization of the sample 7; determining specifications of the fiber cords 4 satisfying respective standard values on the basis of a standard value of cutting strength at room temperature and a standard value of elongation during a 1.3 cN/dtex load at 150°C required of reinforcement cords 4 of the refrigerant hose 1, the ascertained relationship between the tensile load and elongation of the respective fiber cords 4, and the ascertained cutting strength at room temperature; and vulcanizing the hose molded body 7 using the fiber cords 4 of the determined specifications as the reinforcing cords 4.
The present invention provides a monitoring system and method enabling stable positioning of a drone at a position above and close to a passive IC tag installed on a marine hose when the IC tag and a communicator mounted on the drone perform wireless communication. In the present invention: a communicator 17, a pressure altimeter 22, and a laser altimeter 23 are mounted on a drone 19; the drone 19 is caused to move to a position above a marine hose 1 at an altitude of 10-20 m; the drone 19 is caused to move downward to bring the communicator 17 closer to an IC tag 11 installed on a floating marine hose 1 when the communicator 17 and the IC tag 11 perform wireless communication; the altitude of the drone 19 is calculated on the basis of laser light emitted downward from the laser altimeter 23 and reflected upward by the marine hose 1; and the drone 19 is controlled to reach an altitude enabling wireless communication between the communicator 17 and the IC tag 11 on the basis of the calculated altitude.
F16L 11/12 - Manches, c. à d. tuyaux flexibles en caoutchouc ou en matériaux plastiques flexibles avec agencements pour usages particuliers, p.ex. spécialement profilés, avec couche protectrice, chauffés, conducteurs d'électricité
F17D 5/06 - Prévention, interception ou localisation des pertes utilisant des moyens électriques ou acoustiques
G01F 23/18 - Indication ou mesure du niveau des liquides ou des matériaux solides fluents, p.ex. indication en fonction du volume ou indication au moyen d'un signal d'alarme par mesurage de la pression les dispositifs d'indication, d'enregistrement ou d'alarme étant actionnés électriquement
G01M 3/28 - Examen de l'étanchéité des structures ou ouvrages vis-à-vis d'un fluide par utilisation d'un fluide ou en faisant le vide par mesure du taux de perte ou de gain d'un fluide, p.ex. avec des dispositifs réagissant à la pression, avec des indicateurs de débit pour soupapes
A production method and device for a curved resin pipe via resin injection molding that uses an assist material. An inner curve part and/or an outer curve part of a pre-selected curved section of a cavity which is formed in a mold is configured from a temperature-adjustable piece section. After molten resin is injected into the cavity from an injection molding device, the temperature of the piece section is controlled by a control unit such that the inner curve part has a lower temperature than the outer curve part, and an assist material is injected into the cavity from an assist material injection unit and is passed through the cavity so as to form a pipe path. The resin remaining in the cavity is cured to produce a curved resin pipe.
B29C 45/17 - Moulage par injection, c. à d. en forçant un volume déterminé de matière à mouler par une buse d'injection dans un moule fermé; Appareils à cet effet - Eléments constitutifs, détails ou accessoires; Opérations auxiliaires
A hose for fluid transportation includes an inner layer, a reinforcing layer, and an outer layer. The inner layer includes a (A) layer including a thermoplastic resin composition ax made of a matrix am containing a thermoplastic resin ar and a domain ad containing a rubber ae, a (B) layer including a thermoplastic resin b or a thermoplastic resin composition bx made of a matrix bm containing a thermoplastic resin br and a domain bd containing a rubber be, and a (C) layer including a rubber composition cx. The (A), (B) and (C) layers are arranged in this order as innermost to outer layers. A 10% modulus M10 to 100% modulus M100 ratio of the (A) and (B) layer structure satisfies 0.5
The present invention addresses the problem of providing a laminate for a tire in which an embedded transponder has exceptional communication properties and which has exceptional durability. The aforementioned problem is solved by a laminate for a tire comprising a transponder, a covering rubber layer that covers the transponder, and an adjacent rubber layer that is laminated adjacent to at least one surface of the covering rubber layer, the transponder having an IC substrate and antennas provided to both ends of the IC substrate, the linear distance between terminals of the antennas provided to the two ends of the IC substrate being 30-60 mm inclusive, the covering rubber layer containing a rubber component, carbon black, calcium carbonate, and oil and containing 1-15 parts by mass of carbon black and 1-80 parts by mass of calcium carbonate per 100 parts by mass of the rubber component, and the oil extraction amount of the covering rubber layer and the oil extraction amount of the adjacent rubber layer satisfying a prescribed relationship.
This tire rubber composition is obtained by blending 100 parts by mass of a diene rubber with 1-100 parts by mass of a rosin-modified phenolic resin having an acid value of less than 30 mg KOH/g.
This tire rubber composition is obtained by blending 100 parts by mass of a diene rubber with 1-60 parts by mass of a rosin-modified phenolic resin having an acid value of less than 30 mg KOH/g, and 30-300 parts by mass of silica having a nitrogen adsorption specific surface area of 100-300 m2/g.
Provided is a rubber composition for undertreads, which provides improved maneuvering stability and high-speed durability while ensuring good low-heat-generating properties and allows for a high level of balance among these properties. In the present invention, 3-60 parts by mass of silica having a CTAB adsorption specific surface area of 60-100 m2/g is added to 100 parts by mass of a rubber component containing 60-90 mass% of an isoprene rubber and 10-40 mass% of an unmodified butadiene rubber. As the unmodified butadiene rubber, one having a molecular weight distribution (Mw/Mn), as determined from the weight average molecular weight (Mw) and the number average molecular weight (Mn), of at most 2.8 is used.
Provided is a rubber composition for an undertread. The rubber composition can improve handling stability and high-speed durability while maintaining good low heat build-up properties, and can achieve a high level of balance between these properties. Relative to 100 parts by mass of a rubber component that contains 40 mass% to 90 mass% of an isoprene-based rubber and 10 mass% to 40 mass% of a modified butadiene rubber and/or a modified styrene-butadiene rubber, the content of silica having a CTAB adsorption specific surface area of 60 m2/g to 100 m2/g is 3 parts by mass to 60 parts by mass.
A rubber composition for a hose including a rubber component containing chloroprene rubber and butadiene rubber, sulfur, and an aromatic oil. With respect to the total mass of the rubber component: the chloroprene rubber being contained in an amount of 60 mass % or more and less than 75 mass %; and the butadiene rubber being contained in an amount of more than 25 mass % and 40 mass % or less. Relative to 100 parts by mass of the rubber component: the sulfur being contained in an amount of more than 0.2 parts by mass and less than 2.5 parts by mass; and the aromatic oil being contained in an amount of 10 parts by mass or more. An optional silane coupling agent may be contained in an amount of from 0 to 2 mass % with respect to the total mass of the rubber component.
C08L 91/00 - Compositions contenant des huiles, graisses ou cires; Compositions contenant leurs dérivés
F16L 11/12 - Manches, c. à d. tuyaux flexibles en caoutchouc ou en matériaux plastiques flexibles avec agencements pour usages particuliers, p.ex. spécialement profilés, avec couche protectrice, chauffés, conducteurs d'électricité
Provided is a tire having a cross-sectional height (SH) ranging from 50 mm to 150 mm, in an unloaded state where the tire is mounted on a specified rim and inflated to a specified internal pressure, an opening distance (A) between the tire and a rim flange on a perpendicular line drawn from an outermost point of the rim flange in a radial direction to an outer surface of the tire with respect to the cross-sectional height (SH) satisfies a relationship 0.01≤A/SH≤0.16 and a projection amount (W) corresponding to one half of a difference between a total width of the tire and a rim width of the specified rim satisfy a relationship 0.03≤A/W≤1.60.
A tire includes a pair of bead cores, a carcass layer extending between the bead cores, and a belt layer disposed on an outer side of the carcass layer in a radial direction. A tire outer diameter OD (mm) is in a range 200≤OD≤660. A total tire width SW (mm) is in a range 100≤SW≤400. A strength Tcs (N/50 mm) per a width of 50 mm of a carcass ply constituting the carcass layer is in a range 17≤Tcs/OD≤120 with respect to the tire outer diameter OD (mm).
B60C 3/04 - Pneumatiques caractérisés par leur section transversale caractérisés par les dimensions relatives de la section, p.ex. par un profil bas
B60C 11/00 - Bandes de roulement des pneumatiques; Sculptures des bandes de roulement; Pièces rapportées antidérapantes
B60C 11/13 - Sculptures des bandes de roulement caractérisées par la section transversale de la rainure, p.ex. pour étayer les parois, ou pour empêcher le coincement de pierres
B60C 13/00 - Flancs du pneumatique; Protection, décoration, marquage ou opérations similaires concernant ces derniers
B60C 15/00 - Talons du pneumatique, p.ex. relèvement ou recouvrement de nappe
A hose for conveying a refrigerant, having an inner surface layer that includes a thermoplastic resin composition with a sea-island structure or a thermoplastic resin, an outer surface layer that includes a thermoplastic resin composition having a sea-island structure, and a reinforcing layer. An oxygen permeability coefficient at a temperature of 21° C. and a relative humidity of 50% of the thermoplastic resin composition or the thermoplastic resin of the inner surface layer is 0.05 cm3·mm/(m2·day·mmHg) or less. A water vapor permeability coefficient at a temperature of 60° C. and a relative humidity of 100% of the thermoplastic resin composition of the outer surface layer being is 10.0 g·mm/(m2·24 h) or less. The reinforcing layer includes an organic fiber with an inclination angle of 49° or more and 61° or less.
Provided is a tire rubber composition that maintains and improves wear resistance, wet performance, and low rolling resistance and achieves an excellent balance between these properties. The tire rubber composition has from 50 mass parts to 150 mass parts of silica and from 16 mass parts to 200 mass parts of a thermoplastic resin blended per 100 mass parts of a diene rubber that contains 50 mass% or more of isoprene rubber, and is characterized in that the thermoplastic resin is composed of aliphatic monomer-derived units and/or aromatic monomer-derived units, the aromatic proton content of the thermoplastic resin is from 0% to less than 5%, the softening point is from 80 to 160°C, and the number-average molecular weight Mn is 1100 or less.
A pneumatic tire includes inner intermediate lug grooves having a length L1 and outer intermediate lug grooves having a length L2 formed in inner and outer intermediate land portions, respectively, where lengths L1 and L2 satisfy L1>L2. Distances W1, W2, W3, and W4 from a tire equator to an inner shoulder main groove, an inner center main groove, an outer center main groove, and an outer shoulder main groove, respectively, satisfy 0.58≤W1/Wi≤0.62, 0.20≤W2/Wi≤0.24, 0.15≤W3/Wo≤0.19, and 0.53≤W4/Wo≤0.57 with respect to distances Wi, Wo from the tire equator to ground contact edges. A total value of a groove width WG1 of the inner shoulder main groove and a groove width WG2 of the inner center main groove is larger than a total value of a groove width WG3 of the outer center main groove and a groove width WG4 of the outer shoulder main groove.
B60C 11/04 - Sculptures des bandes de roulement dans lesquelles la surface en relief des sculptures est composée uniquement de nervures circonférentielles continues, p.ex. en zigzag
Provided are a solid tire and a method for manufacturing the same, said solid tire comprising a two-dimensional code that is for efficiently performing quality control and traceability for each product, wherein it is possible to sufficiently ensure an effect of protecting the two-dimensional code. A solid tire 10 comprises a tread rubber layer 1 on a tread side, and a base rubber layer 2 on a rim side, wherein a two-dimensional code 11 is positioned on an outer surface S of the solid tire 10, exclusive of a base surface B that is in contact with a rim bottom surface. A plurality of layers of rubber sheets 20 are wound to form an unvulcanized tire 10X, a substrate 13 that comprises a plastic film having the two-dimensional code 11 printed thereon is adhered onto the unvulcanized tire 10X, and then the unvulcanized tire 10X that has been provided with the two-dimensional code 11 is vulcanized in a mold.
Provided are a tire, and a method for manufacturing the same, with which rubber flow of a covering layer of a transponder during vulcanization is suppressed, thereby enabling an improvement in the communication performance of the transponder. The tire comprises an annular tread portion 1 extending in a circumferential direction of the tire, a pair of side wall portions 2 disposed on both sides of the tread portion 1, and a pair of bead portions 3 disposed inward of the side wall portions 2 in a tire radial direction, a carcass layer 4 being laid between the pair of bead portions 3, and an inner liner layer 9 being disposed on a tire inner surface Ts along the carcass layer 4, wherein: a transponder 20 covered by a covering layer made of rubber is embedded inside the tire; and the transponder 20 is disposed at least 10°, in the circumferential direction of the tire, away from a position at which bulging toward the inside of the tire on an inner circumference of the tire is greatest, excluding a part where the transponder 20 is embedded, in the position in the radial direction of the tire at which the transponder 20 is disposed.
B60C 19/00 - Autres structures ou éléments du pneumatique
B29D 30/06 - Pneumatiques ou leurs parties constitutives
B60C 1/00 - Pneumatiques caractérisés par la composition chimique, la disposition ou le mélange physique de la composition
B60C 5/14 - Pneumatiques ou chambres intérieures gonflables sans éléments internes gonflables distincts, p.ex. pneumatiques sans chambre à air dont la section transversale est ouverte sur la jante avec chemise ou revêtement imperméable sur la paroi intérieure du pneumatique
Provided are a tire, and a method for manufacturing the same, with which rubber flow of a covering layer of a transponder during vulcanization is suppressed, thereby enabling an improvement in the communication performance of the transponder. The tire comprises an annular tread portion extending in a circumferential direction of the tire, a pair of side wall portions disposed on both sides of the tread portion, and a pair of bead portions disposed inward of the side wall portions in a tire radial direction, a carcass layer 4 being laid between the pair of bead portions, a plurality of belt layers being disposed on an outer circumferential side of the carcass layer in the tread portion, and an inner liner layer 9 being disposed on a tire inner surface Ts along the carcass layer 4, wherein: a plurality of ridges 39 are formed at intervals on the tire inner surface Ts; a transponder 20 covered by a covering layer 23 made of rubber is embedded inside the tire; and the position of a center C of an IC chip 21 forming the transponder 20 is disposed in a region A between adjacent ridges 30.
B60C 19/00 - Autres structures ou éléments du pneumatique
B29C 33/02 - Moules ou noyaux; Leurs détails ou accessoires comportant des moyens incorporés de chauffage ou de refroidissement
B29C 35/02 - Chauffage ou durcissement, p.ex. réticulation ou vulcanisation
B29D 30/06 - Pneumatiques ou leurs parties constitutives
B60C 1/00 - Pneumatiques caractérisés par la composition chimique, la disposition ou le mélange physique de la composition
B60C 5/14 - Pneumatiques ou chambres intérieures gonflables sans éléments internes gonflables distincts, p.ex. pneumatiques sans chambre à air dont la section transversale est ouverte sur la jante avec chemise ou revêtement imperméable sur la paroi intérieure du pneumatique
METHOD FOR CREATING DETERMINATION SPACES, METHOD FOR UPDATING DETERMINATION SPACE, METHOD FOR DETERMINING ROAD SURFACE STATE, DETERMINATION SPACE CREATION APPARATUS, AND ROAD SURFACE STATE DETERMINATION APPARATUS
A method creates determination spaces for determining a road surface state of a road surface on which a vehicle is running from output waveform data obtained by measuring changes in a physical quantity of a tire of the vehicle during the running using information regarding road surfaces and the output waveform data. The method includes obtaining the output waveform data in a plurality of different road surface states and a running condition at times of measurement of the output waveform data, classifying the output waveform data into a plurality of groups on a basis of the running condition, performing, for each group, machine learning using training data where the output waveform data is associated with information regarding the road surface states, and creating the determination space corresponding to the group.
G07C 5/02 - Enregistrement ou indication du temps de circulation, de fonctionnement, d'arrêt ou d'attente uniquement
G01H 11/08 - Mesure des vibrations mécaniques ou des ondes ultrasonores, sonores ou infrasonores par détection des changements dans les propriétés électriques ou magnétiques par des moyens électriques utilisant des dispositifs piézo-électriques
A method for producing a pneumatic tire is provided. A coating layer coating a transponder is caused to have, in a thickness direction thereof, a top surface layer located on a top surface side of the transponder and a back surface layer located on a back surface side of the transponder. A step is formed at least at an end portion on one side of both end portions of the coating layer in a width direction such that positions of end portions of the top surface layer and the back surface layer do not coincide with each other. The transponder coated with the coating layer having the step is embedded in an unvulcanized tire. The unvulcanized tire is vulcanized.
A sealant composition of an embodiment of the present invention constitutes a sealant layer of a pneumatic tire provided with the sealant layer on the tire inner surface. The sealant composition contains a rubber component, a tackifier, a plasticizer, and a crosslinking component, and has an adhesive force to a steel material of 12 N or more.
Provided is a tire capable of improving snow performance without impairing abrasion resistance. As grooves partitioning blocks B in a tread portion 1, provided are a pair of angled main grooves 11 extending in a zigzag manner in a tire circumferential direction and arranged on both sides of a tire equator CL, a plurality of angled inclined grooves 12 extending from the angled main grooves 11 in the direction of the tire equator CL, and inclined fine grooves 13 connecting the angled inclined grooves 12 on both sides of the tire equator CL, in which: the angled inclined grooves 12 are configured by first inclined groove portions 12a extending from the angled main grooves 11 toward the tire equator CL in an inclined manner in the tire circumferential direction and having at least one angled point, and second inclined groove portions 12b inclined in the same direction as the first inclined groove portions 12a and more on the tire circumferential direction side than the first inclined groove portions 12a, terminating without crossing the tire equator CL; the inclined fine grooves 13 are inclined in the opposite direction to the angled inclined grooves 12 and connect the midpoints of the second inclined groove portions 12b; and at least one sipe S is formed in each block B.
B60C 11/13 - Sculptures des bandes de roulement caractérisées par la section transversale de la rainure, p.ex. pour étayer les parois, ou pour empêcher le coincement de pierres
Provided is a tire capable of improving snow performance without impairing wear resistance. At least three bent main grooves (10) extending in a zigzag shape along the circumferential direction of the tire are provided in a tread portion (1), land portions (20) between the bent main grooves (10) are partitioned into a plurality of blocks (20B) by a plurality of lug grooves (30), a pair of sipes (40) and a pair of notch grooves (50) are provided on the tread surface of each of the plurality of blocks (20B), the pair of sipes (40) extend in the same direction with an angular difference within 10°, one end of each of the pair of sipes (40) opens into the bent main groove (10) and the other end terminates within the block (20B), the pair of notch grooves (50) extend in the same direction with an angular difference within 10°, one end of each of the pair of notch grooves (50) opens into the bent main groove (10), and the other end terminates within the block (20B).
B60C 11/13 - Sculptures des bandes de roulement caractérisées par la section transversale de la rainure, p.ex. pour étayer les parois, ou pour empêcher le coincement de pierres
Provided is a tire with which snow performance can be improved without impairing wear resistance. This tire is provided with, as a plurality of grooves demarcating a plurality of blocks B in a tread portion 1: a pair of bent main grooves 11 which are disposed on both sides of a tire equator CL and which have a curved shape in which circumferential groove portions 11a and width direction groove portions 11b are linked alternately in the circumferential direction of the tire; a plurality of bent inclined grooves 12 each comprising a first inclined groove portion 12a extending in a direction toward the tire equator CL from each bent main groove 11 and a second inclined groove portion 12b which extends in the same direction as the first inclined groove portion 12a and is inclined toward the circumferential direction of the tire and which terminates without crossing the tire equator CL; a plurality of shoulder lug grooves 13 extending in an extension direction of the width direction groove portions 11b toward the outside in the width direction of the tire from end portions of the width direction groove portions 11b; and transverse grooves 14 which are inclined in the opposite direction to the bent inclined grooves 12 and which connect the pair of bent main grooves 11 together. At least one sipe S is formed in each of the plurality of blocks B.
B60C 11/13 - Sculptures des bandes de roulement caractérisées par la section transversale de la rainure, p.ex. pour étayer les parois, ou pour empêcher le coincement de pierres
A tire includes a first shoulder land portion, a first circumferential groove, a first middle land portion, a second circumferential groove, a center land portion, a third circumferential groove, a second middle land portion, a fourth circumferential groove, and a second shoulder land portion in this order from a vehicle mounting inner side in a tire plan view. The center land portion includes a plurality of center sipes extending in a tire width direction. At least one of the plurality of center sipes includes a chamfered portion at at least any of one and the other edge portions in a tire circumferential direction. The first middle land portion includes a plurality of middle sipes extending in the tire width direction. At least one of the plurality of middle sipes includes a chamfered portion at at least any of one and the other edge portions in the tire circumferential direction.
A rubber composition for a tire contains a diene rubber, silica, a silane coupling agent, a fatty acid metal salt, and an alkylsilane. 60-95 mass % of a specific conjugated diene rubber is used as the diene rubber and is formed by reacting a polyorganosiloxane with an active terminal of a conjugated diene-based polymer chain having the active terminal and by making a polymer block A continuous with a polymer block B. The polymer block A contains 80-95 mass % of isoprene and 5-20 mass % of aromatic vinyl, has an active terminal, and has a weight average molecular weight of 500-15000. The polymer block B contains 1,3-butadiene and an aromatic vinyl and has an active terminal. 55-90 parts by mass of silica having a CTAB adsorption specific surface area of 185 m2/g or more is used as the silica.
C08K 5/098 - Sels métalliques d'acides carboxyliques
C08K 5/5419 - Composés contenant du silicium contenant de l'oxygène contenant au moins une liaison Si—O contenant au moins une liaison Si—C
C08K 5/548 - Composés contenant du silicium contenant du soufre
C08L 53/02 - Compositions contenant des copolymères séquencés possédant au moins une séquence d'un polymère obtenu par des réactions ne faisant intervenir que des liaisons non saturées carbone-carbone; Compositions contenant des dérivés de tels polymères contenant des monomères vinylaromatiques et des diènes conjugués
A rubber composition contains 10-50 parts by mass of a thermoplastic resin in 100 parts by mass of a diene rubber containing 60 mass % or more of a styrene-butadiene rubber having a styrene content of 5-30 mass % and a vinyl content of 10-35 mass %. In a mixture containing the diene rubber and the thermoplastic resin in a mass ratio of 1:1, a difference (Tga−Tgm) between a theoretical value (Tga) of a glass transition temperature of the mixture calculated based on an average glass transition temperature (Tg1) of the diene rubber and a glass transition temperature (Tg2) of the thermoplastic resin, and a measurement value (Tgm) of a glass transition temperature of the mixture, is lower than 5° C., and a difference (Tg2−Tg1) is 50-105° C. An amount of the thermoplastic resin is 30 mass % or more in 100 mass % total of a plasticizer component contained in the rubber composition.
In a tire having a cross-sectional height from 50-150 mm, in an unloaded state mounted on a specified rim and inflated to a specified internal pressure, a distance (A) between the tire and a rim flange on a perpendicular line drawn from a rim flange outermost point in a radial direction to a tire outer surface with respect to the cross-sectional height (SH) satisfies 0.01≤A/SH≤0.16, and a point (S) where the rim flange separates from the tire is defined, a point (T) where the perpendicular line drawn from the rim flange outermost point in the radial direction to the tire outer surface intersects the tire outer surface is defined, two perpendicular lines are drawn from (S) and (T) to a carcass layer turned-up portion, and a cross-sectional area (Sr) of a rubber portion in a region surrounded by the two perpendicular lines and the carcass layer turned-up portion satisfies 12 mm2≤Sr≤101 mm2.
B60C 3/04 - Pneumatiques caractérisés par leur section transversale caractérisés par les dimensions relatives de la section, p.ex. par un profil bas
B60C 9/08 - Carcasses les fils de renforcement de chaque pli de la carcasse étant sensiblement parallèles joignant transversalement un talon à l'autre, c. à d. formant une nappe radiale
B60C 15/06 - Pointes de gomme, garnitures, toiles de frottement
A tire having a cross-sectional height ranging 50-150 mm, in an unloaded state where the tire is mounted on a specified rim and inflated to a specified internal pressure, an opening distance (A) between the tire and a rim flange on a perpendicular line drawn from an outermost point of the rim flange in the radial direction to an outer surface of the tire with respect to the cross-sectional height (SH) satisfies 0.015≤A/SH≤0.16, and a point (P) at which a horizontal line in a tire width direction passing through the outermost point of the rim flange in the radial direction intersects with the outer surface of the tire, a point (Q) specifying a rim width and a rim diameter of the specified rim, and an angle (α) formed by a straight line connecting the points (P) and (Q) and a horizontal line in the tire width direction satisfies 50°≤α≤80°.
A tire includes a pair of bead cores, a carcass layer extended across the bead cores, a belt layer disposed on an outer side of the carcass layer in a radial direction, and a tread portion. The tire outer diameter OD (mm) is in a range 200≤OD≤660. The total tire width SW (mm) is in a range 100≤SW≤400. A groove area ratio Aa (%) of the tread portion is in a range 0.008≤Aa/OD≤0.150. When a region of 48×(OD/SW){circumflex over ( )}(1/5) (%) from a maximum ground contact width end portion on a tire inner side when the tire is mounted on a vehicle is defined as a tire inner region of the tread portion, a groove area ratio Ai (%) of the tire inner region and a groove area ratio Ao (%) of a tire outer region as a region other than the tire inner region have a relationship Ai
B60C 11/13 - Sculptures des bandes de roulement caractérisées par la section transversale de la rainure, p.ex. pour étayer les parois, ou pour empêcher le coincement de pierres
B60C 3/04 - Pneumatiques caractérisés par leur section transversale caractérisés par les dimensions relatives de la section, p.ex. par un profil bas
A rubber composition contains 10-50 parts by mass of a thermoplastic resin in 100 parts by mass of a diene rubber containing 60 mass % or more of a styrene-butadiene rubber having a styrene content of 5-30 mass % and a vinyl content of 10-35 mass %. In a mixture containing the diene rubber and the thermoplastic resin in a mass ratio of 1:1, a difference (Tga-Tgm) between a theoretical value (Tga) of a glass transition temperature of the mixture calculated based on an average glass transition temperature (Tg1) of the diene rubber and a glass transition temperature (Tg2) of the thermoplastic resin, and a measurement value (Tgm) of a glass transition temperature of the mixture, is 5-50° C., and a difference (Tg2-Tg1) is 110-150° C. An amount of the thermoplastic resin is 30 mass % or more in 100 mass % total of a plasticizer component contained in the rubber composition.
Provided is a refrigerant-transporting hose having a low gas permeability of steam, fluorocarbons, or the like, and being flexible and light-weight. The refrigerant-transporting hose includes at least an outer layer, a reinforcing layer, and an inner layer. The outer layer has a layer composed of a thermoplastic resin composition A, and the inner layer has a layer composed of a thermoplastic resin composition B. The thermoplastic resin composition A has a sea-island structure in which a thermoplastic resin a containing a polyolefin resin serves as the matrix and from 51 to 85 mass % of an elastomer a containing a butyl elastomer serves as the domains. The thermoplastic resin composition B has a sea-island structure in which a thermoplastic resin b containing a polyamide resin serves as the matrix and an elastomer b containing a butyl elastomer serves as the domains.
Provided in a tire are a second land portion defined by a shoulder main groove and a center main groove extending in a circumferential direction, and sets of first and second lug grooves that extend in the second land portion in a width direction and are disposed alternately in the circumferential direction. The first lug groove opens to the shoulder main groove and terminates inside the second land portion in which the groove width on one end side is formed wider than the groove width on the other end side, and the second lug groove opens to the center main groove and terminates inside the second land portion in which the groove width on one end side is formed narrower than the groove width on the other end side and the one end side of the second lug groove that is formed narrower is closed at ground contact.
B60C 11/13 - Sculptures des bandes de roulement caractérisées par la section transversale de la rainure, p.ex. pour étayer les parois, ou pour empêcher le coincement de pierres
B60C 11/12 - Sculptures des bandes de roulement caractérisées par l'utilisation d'entailles étroites ou de traits de scie, p.ex. lamelles
68.
METHOD FOR PRODUCING MOLD FOR STUDDED TIRES, SAID MOLD, AND METHOD FOR PRODUCING STUDDED TIRES
Provided are a method for producing a mold with which it is possible for individual mold pins to protrude from a tread molding surface with precision and according to design specifications, this mold, and a method for producing studded tires. The bottom sides of flange portions 7 provided partway along the longitudinal direction of individual mold pins 5 is formed as a flat surface 7b perpendicular to the axial direction of the mold pins 5, the axial length between the protruding tips 6b of the mold pins 5 and the flat surfaces 7b is set to a predetermined length L, the peripheral regions of individual pin holes 3 on a tread molding surface 2 are formed into a convex or concave shape with a flat surface 4 perpendicular to the depth direction of the pin holes 3, and the mold pins 5 are inserted into the corresponding pin holes 3 to cause the flat surfaces 7b, 4 to abut one another, thereby protruding on the tread molding surface and producing a mold 1. A studded tire is produced by driving stud pins 15 into installation holes 13 of a base tire BT produced by vulcanizing a green tire GT using this mold 1.
Provided is a rubber composition for a side tread, whereby it becomes possible to improve low heat-generating properties while retaining elongation at break and cut resistance at satisfactory levels and it also becomes possible to achieve all of these properties at high levels and in a good balance. Silica having a CTAB adsorption specific surface area of 60 m2/g to 100 m2/g, carbon black having a CTAB adsorption specific surface area of 20 m2/g to 60 m2/g, and a sulfur-containing silane coupling agent are mixed with a diene-based rubber comprising 35% by mass to 65% by mass of an isoprene-based rubber and 35% by mass to 65% by mass of a butadiene-based rubber synthesized with a neodymium-based catalyst, in which the addition amount of silica is set at 2 parts by mass to 25 parts by mass and the total addition amount of silica and carbon black is set at 55 parts by mass or less per 100 parts by mass of the diene-based rubber, the ratio of the addition amount Ms of silica to the addition amount Mc of carbon black, i.e., Ms/Mc, is set as 0.8 or less, and the ratio of the addition amount of the sulfur-containing silane coupling agent to the addition amount of silica is set at less than 10% by mass.
Provided is a side tread rubber composition that maintains preferable hardness and tensile strength while suppressing a reduction in elongation at break over time of the rubber composition stored without vulcanization, improves low heat generation (tanδ (60°C)) and achieves these properties balanced at high levels. This composition comprises, relative to a diene rubber containing 35% by mass to 55% by mass of an isoprene rubber and 45% by mass to 65% by mass of a butadiene rubber, a silica having a CTAB adsorption specific surface area of 60 m2/g to 100 m2/g, a carbon black having a CTAB adsorption specific surface area of 30 m2/g to 100 m2/g, a sulfur-containing silane coupling agent and a guanidine vulcanization accelerator. The amount of the silica blended relative to 100 parts by mass of the diene rubber is 5 parts by mass to 50 parts by mass inclusive, the total amount of the silica and the carbon black blended relative to 100 parts by mass of the diene rubber is less than 55 parts by mass and the ratio Ma/Ms of the amount Ma of the guanidine vulcanization accelerator relative to the amount Ms of the silica blended is 0.02 to 0.08.
A sealant composition of the present invention is formed by blending, per 100 parts by mass of a rubber component (A), less than 30 parts by mass of a tackifier (B) and 20 parts by mass or more of a plasticizer (C), and thus the sealant composition can provide improved sealability, viscosity temperature dependency, and fluidity during storage of a tire.
Provided is a pneumatic tire that is capable of having improved high-speed durability while maintaining good uniformity. This pneumatic tire comprises: a tread portion 1; a pair of sidewall portions 2; and a pair of bead portions 3. A carcass layer 4 is provided so as to span between the pair of bead portions 3, 3. A plurality of belt layers 7 containing belt cords inclined with respect to the circumferential direction of the tire are arranged on the outer circumferential side of the carcass layer 4 in the tread portion 1. A belt cover layer 8 containing organic fiber cords C aligned in the tire circumferential direction is arranged on the outer circumferential side of the belt layer 7. The organic fiber cords C used in the belt cover layer 8 are formed of an aliphatic polyamide, and have a tensile stiffness retention ratio of at least 90%, which is the ratio of the initial tensile stiffness at 80°C to the initial tensile stiffness at 20°C, and a dry heat shrinkage rate of at most 3.5%.
B60C 9/22 - Structure ou disposition des ceintures, des couches de protection, des couronnes de renforcement ou des couches amortissantes constituées par des nappes gommées ayant chacune leurs fils disposés sensiblement en parallèle les nappes étant disposées avec tous leurs fils orientés selon la circonférence du pneumatique
B60C 9/00 - Armatures des pneumatiques ou disposition des nappes dans ces derniers
A sealant composition of the present invention is formed by blending, per 100 parts by mass of a rubber component (A), 5 parts by mass or more of a tackifier (B), 60 parts by mass or more of a plasticizer (C), 0.1 to 10 parts by mass of sulfur (D), and 0.1 to 10 parts by mass of a vulcanization accelerator (E) (excluding a thiuram-based vulcanization accelerator, however), and thus the sealant composition can provide improved sealability, viscosity temperature dependency, and fluidity during storage of a tire.
A rubber composition for a tire contains, in 100 parts by mass of a diene rubber containing 55 mass % or more of a terminal-modified styrene-butadiene rubber, from 60 to 130 parts by mass of silica, from 10 to 50 parts by mass of a thermoplastic resin, and from 2 to 20 mass % of a silane coupling agent with respect to the mass of the silica, the terminal-modified styrene-butadiene rubber having a vinyl content of from 9 to 45 mol % and a glass transition temperature of −45° C. or lower, and containing a polyorganosiloxane structure or an aminosilane structure at a terminal.
Provided are a tire shape measurement device and a method. In a measurement mode in which air is injected into an inside of a tire mounted on a holding portion to inflate the tire and the tire and a non-contact sensor are relatively moved in a tire circumferential direction to detect a shape of a predetermined site of the tire over an entire circumference in the tire circumferential direction by the sensor, a detection unit of the sensor is covered with a cover portion is released. When the air is exhausted from the inside of the tire to an outside and the tire is deflated to remove the tire from the holding portion after the detection of the shape of the tire, a standby mode M1 in which the detection unit is covered with the cover portion is set.
G01B 11/245 - Dispositions pour la mesure caractérisées par l'utilisation de techniques optiques pour mesurer des contours ou des courbes en utilisant plusieurs transducteurs fixes fonctionnant simultanément
Provided is a pneumatic tire. The cap tread layer is made of a rubber composition in which 50 parts by mass to 100 parts by mass of silica and 5 parts by mass to 25 parts by mass of carbon black are blended per 100 parts by mass of diene rubber containing 50 mass % or more of natural rubber and 20 mass % or more and 40 mass % or less of styrene-butadiene rubber. As the styrene-butadiene rubber, terminal-modified styrene-butadiene rubber having a vinyl content of 35 mass % to 70 mass % is used. As the carbon black, carbon black having a nitrogen adsorption specific surface area N2SA of less than 130 m2/g is used. The rubber composition constituting the cap tread layer is set to have a tensile product TB×EB of 12000 or more and a hardness of 60 or more and 70 or less.
22SA) of 100-500 m2/g and 5-50 parts by mass of a terpene phenol resin having an acid value of 30 mg KOH/g or more and a hydroxyl value of 5 mg KOH/g or more into 100 parts by mass of a diene-based rubber containing 50 parts by mass or more of a styrene-butadiene copolymer rubber having a styrene content of less than 30 mass% but not less than 5 mass%.
C08L 45/00 - Compositions contenant des homopolymères ou des copolymères de composés ne possédant pas de radicaux aliphatiques non saturés dans une chaîne latérale et contenant une ou plusieurs liaisons doubles carbone-carbone dans un système carbocyclique ou hét; Compositions contenant des dérivés de tels polymères
Provided are a road surface condition determining method and a road surface condition determining device with which it is possible to determine a road surface condition on a spatial scale longer than a ground contacting length of a tire or a circumference of the tire. This road surface condition determining method includes: a first step for acquiring, over time, a signal including an acceleration, strain rate, or strain information output from sensors arranged on an inner surface of a tire when the tire is rolling along a road surface, to obtain time-series data X(t) when the tire has rotated at least twice; a second step for obtaining an autocorrelation function R(τ), with τ as time, from the time-series data X(t) obtained in the first step; a third step for extracting positive maximum values having a magnitude equal to or greater than a prescribed value, with τ>0, for the autocorrelation function R(τ) obtained in the second step; and a fourth step for determining an unevenness of the road surface using the positive maximum values extracted in the third step.
In this tire, a carcass layer is turned back toward an outer side in the tire width direction while wrapping around a bead core. In addition, a distance GD from a tread profile at a tire maximum width position to a tire inner surface, a distance GE from the tread profile at a position of 30% of a tire cross-sectional height to the tire inner surface, and a distance GF from the tread profile at a self-contact starting point of a turned back portion of the carcass layer to the tire inner surface satisfy conditions GE≤GF, 1.00≤GE/GD≤1.10 and 1.00≤GF/GD≤1.40.
The purpose of the present invention is to provide: a rubber composition configured to make a vulcanized rubber that demonstrates excellent adhesion to a reinforcement layer having a metal surface and that has excellent wear resistance; a laminate that includes the reinforcement layer having a metal surface and that includes a rubber layer which is a vulcanized rubber of the rubber composition; and a hose. The present invention provides: a rubber composition containing, with respect to 100 parts by mass of a rubber component including chloroprene rubber, 5-14 parts by mass of silica, not more than 1.0 parts by mass of sulfur, and ethylenethiourea; a laminate including a reinforcement layer having a metal surface and a rubber layer which is a vulcanized rubber of the rubber composition; and a hose.
B32B 15/06 - Produits stratifiés composés essentiellement de métal comprenant un métal comme seul composant ou comme composant principal d'une couche adjacente à une autre couche d'une substance spécifique de caoutchouc
The purpose of the present invention is to provide a rubber composition having excellent extrusion processability, adhesiveness to a reinforcing material, and weather resistance. The present invention pertains to a rubber composition and a hose formed by using the same, the rubber composition comprising: a rubber component containing at least 80 mass% of an ethylene-propylene-ethylidene norbornene copolymer satisfying expression (I); magnesium oxide; carbon black; and a vulcanizing agent. Expression (I): 3.5≥EE/(EP×ENB×Mn)×106≥0.7 In expression (I), EE is the content (mol%) of an ethylene-ethylene chain structure of an ethylene-propylene-ethylidene norbornene copolymer, EP is the content (mol%) of an ethylene-propylene chain structure, ENB is the content (mass%) of ethylidene norbornene, and Mn is the number-average molecular weight.
The purpose of the present invention is to provide: a rubber composition which gives a vulcanized rubber excellent in terms of flame retardancy, ozone resistance, bloom resistance, and power-saving properties; and a conveyor belt. The present invention provides: a rubber composition for a conveyor belt, which comprises a rubber component comprising a natural rubber and a butadiene rubber in which the mass ratio of the content of the natural rubber to the content of the butadiene rubber is 30/70 to 80/20, a flame retardant comprising a bromine-based flame retardant and antimony trioxide, a hydrocarbon-based wax (W), a filler, an antioxidant comprising an amine-based antioxidant, a vulcanization accelerator, and sulfur, in which the content of the hydrocarbon-based wax (W) is 2.5 parts by mass or less per 100 parts by mass of the rubber component, the mass ratio between the content of the bromine-based flame retardant and the content of the hydrocarbon-based wax (W) is 8.0 or higher, the hydrocarbon-based wax (W) includes a hydrocarbon-based wax (w1) having a melting point of 65°C or higher, and the content of the amine-based antioxidant is 3.0 parts by mass or higher per 100 parts by mass of the rubber component; and a conveyor belt formed using the rubber composition.
The present invention limits damage to a connected pipe by adjusting length, and avoids both increases in man hours worked during assembly and increases in cost. Provided is a pipe joint fitting 10A that connects a fluid passage R and comprises a mouthpiece part 22A (first joint fitting part 12) and a hose joint part 24A (second joint fitting part 14), said pipe joint fitting 10A being provided with a joining mechanism 18 that joins the mouthpiece part 22A and the hose joint part 24A such that, when the mouthpiece part 22A and the hose joint part 24A are joined and the interiors thereof are in communication, the total length of the mouthpiece part 22A and the hose joint part 24A can be regulated. Additionally, the invention is provided with a locking mechanism 20 that locks the total length of the mouthpiece part 22A and the hose joint part 24A in the regulated state.
F16L 15/02 - Raccords avec filetage; Formes des filetages pour ces raccords permettant un réglage sensiblement longitudinal par emploi d'une partie à long filetage
F16L 15/04 - Raccords avec filetage; Formes des filetages pour ces raccords avec des joints d'étanchéité supplémentaires
F16L 33/24 - Dispositions d'assemblage des manches avec des organes rigides; Raccords rigides pour manches, p.ex. éléments unitaires s'engageant à la fois dans deux manches avec parties directement vissées sur ou dans la manche
Provided are a tire body ply and a pneumatic tire with which processability of the body ply during rolling and during grooving is improved so that tire uniformity can be improved. A tire body ply 1 ha a plurality of warp strands 2 arrayed in parallel and weft strands 3 cast so as to intersect at coarse density with the warp strands 2, wherein: the warp strands 2 are organic fiber cord containing polyethylene terephthalate fiber or aramid fiber; the weft strands 3 are cotton spun yarn; the fineness of the weft strands 3 is in a range of 150-350 dtex, and the density of the weft strands 3 is in a range of 2.0 threads/50 mm to 4.0 threads/50 mm. This pneumatic tire has a belt cover layer 18 constituted from a rubber-coated strip material 10 of the body ply 1, wound spirally in the tire circumferential direction.
B60C 9/00 - Armatures des pneumatiques ou disposition des nappes dans ces derniers
B60C 9/22 - Structure ou disposition des ceintures, des couches de protection, des couronnes de renforcement ou des couches amortissantes constituées par des nappes gommées ayant chacune leurs fils disposés sensiblement en parallèle les nappes étant disposées avec tous leurs fils orientés selon la circonférence du pneumatique
D03D 15/217 - Tissus caractérisés par la matière, la structure ou les propriétés des fibres, des filaments, des filés, des fils ou des autres éléments utilisés en chaîne ou en trame caractérisés par la matière des fibres ou des filaments formant les filés ou les fils à base de cellulose naturelle de plantes, p.ex. coton
D03D 15/283 - Tissus caractérisés par la matière, la structure ou les propriétés des fibres, des filaments, des filés, des fils ou des autres éléments utilisés en chaîne ou en trame caractérisés par la matière des fibres ou des filaments formant les filés ou les fils à base de polymères synthétiques, p.ex. fibres polyamides ou fibres polyesters
D03D 15/41 - Tissus caractérisés par la matière, la structure ou les propriétés des fibres, des filaments, des filés, des fils ou des autres éléments utilisés en chaîne ou en trame caractérisés par la structure des filés ou des fils à torsion spécifique
Provided is a tire from which a plurality of information items concerning a functional component can be easily acquired by means of a marking on the outer surface of the tire. A functional component (20) or a container (10) containing the functional component (20) is fixed on a tire inner surface (Ts), and a marking (40) is disposed on at least one side of a pair of sidewall portions (2), the marking (40) including position information regarding the position of the functional component (20) on the circumference of the tire, and one or more additional information item regarding the functional component (20).
A pneumatic tire includes undertread layer made of a rubber composition obtained by blending, per 100 parts by mass of diene rubber, 15 parts by mass to 45 parts by mass of carbon black having a nitrogen adsorption specific surface area N2SA of 20 m2/g to 85 m2/g and a DBP absorption of 90 mL/100 g to 200 mL/100 g, 3 parts by mass to 30 parts by mass of silica, and a silane coupling agent in an amount of 5 mass % to 15 mass % of the silica. A ratio is calculated based on a hardness Hu of an undertread rubber and an elastic modulus Ec and a hardness Hc of a cap tread rubber, is set to 110 to 140. A proportion iof a thickness G2 of the undertread layer to an under-groove rubber gauge G1, is set to 0.55 or more and 0.80 or less.
A tire includes a tread portion, a pair of bead cores, a carcass layer extended across the bead cores, and a belt layer disposed on an outer side of the carcass layer in a radial direction. A tire outer diameter OD (mm) is in a range 200≤OD≤660. A total tire width SW (mm) is in a range 100≤SW≤400. A tire internal volume V (m{circumflex over ( )}3) is in a range 4.0≤(V/OD)×10{circumflex over ( )}6≤60 with respect to the tire outer diameter OD (mm).
Provided is a rubber composition for tires. From 35 parts by mass to 60 parts by mass of carbon black having a CTAB adsorption specific surface area of less than 70 m2/g and from 3 parts by mass to 30 parts by mass of silica having a CTAB adsorption specific surface area of less than 180 m2/g are blended per 100 parts by mass of a rubber component containing 50 mass % or more of natural rubber and from 10 mass % to 40 mass % of butadiene rubber. The butadiene rubber uses an unmodified butadiene rubber having a cis-1,4 bond content of 97% or more, a Mooney viscosity ML1+4 at 100° C. of 45 or more, and a ratio Tcp/ML1+4 of a 5 mass % toluene solution viscosity Tcp (unit: cps) at 25° C. to the Mooney viscosity ML1+4 ranging from 2.0 to 3.0.
A metal tube (10) constituting a fluid flow path (12) is cut, and an attachment (14A) for a fluid characteristic measurement sensor is interposed between end portions of the cut metal tubes (10). The attachment (14A) includes a body (16A) through which a body flow path (1606) extends through and to which a temperature sensor (18) and a pressure sensor (20) are attached in advance and a pair of connection members (22) that connect a fluid flow path (12) and the body flow path (1606). Joint fittings (24A) are allowed to be used as a pair of connection members (22). The attachment improves workability 10 when measuring a characteristic of a fluid and reliably reducing a leakage of the fluid.
F16L 41/00 - Tuyaux de branchement; Raccordements des tuyaux aux parois
G01L 19/00 - MESURE DES FORCES, DES CONTRAINTES, DES COUPLES, DU TRAVAIL, DE LA PUISSANCE MÉCANIQUE, DU RENDEMENT MÉCANIQUE OU DE LA PRESSION DES FLUIDES - Détails ou accessoires des appareils pour la mesure de la pression permanente ou quasi permanente d'un milieu fluent dans la mesure où ces détails ou accessoires ne sont pas particuliers à des types particuliers de manomètres
The purpose of the present invention is to achieve excellent performance in terms of noise and vibration and wet grip. The present invention comprises: a first main groove 21, a second main groove 22, a third main groove 23, and a fourth main groove 24 that are formed such that the width of the groove closest to the outside in the tire width direction is narrower than the width of the groove closest to the inside in the tire width direction; a first land portion 31, a second land portion 32, a third land portion 33, a fourth land portion 34, and a fifth land portion 35 that are provided from the inside in the tire width direction to the outside in the tire width direction; a narrow groove 351 in the fifth land portion 35; first sipes 311 each having one end that penetrates to but does not pass through the first main groove 21; second sipes 321; third sipes 331; fourth sipes 341; fifth sipes 352 each having one end that penetrates to but does not pass through the narrow groove 351; and fifth lug grooves 353. The second sipes 321 are at least twice as numerous as the sipes 331, 341. The sipes 321, 341, 351 incline in the same direction relative to the tire width direction. The first sipes 311, the fifth sipes 352, and the fifth lug grooves 353 each have an incline in the same direction.
B60C 11/13 - Sculptures des bandes de roulement caractérisées par la section transversale de la rainure, p.ex. pour étayer les parois, ou pour empêcher le coincement de pierres
Provided are a tire and a tire mold capable of exhibiting excellent visibility by emphasizing the visual effects of brightness and darkness based on serrations. In a tire in which a side wall portion 2 includes a mark portion 21 and a background portion 22 surrounding the mark portion 21, and in which serrations 10 including a plurality of ridges 11 arranged in parallel are formed in either the mark portion 21 or the background portion 22, each ridge 11 includes, in a cross section orthogonal to a length direction of the ridge 11, a side wall surface 13 having a negative slope relative to a normal line L of a reference surface B on which the ridge 11 is formed, and an inclined surface 14 that is inclined relative to the reference surface B.
Provided are a tire manufacturing method and a tire forming device. One band-like strip material is sequentially supplied through one strip material supply line. By repeating a step of bonding the strip material placed in an arrangement unit by a holding machine to a forming surface on the outer circumferential side of the rigid core using a bonding mechanism, a belt layer in which the strip materials are arranged in the circumferential direction with reinforcing cords inclined at a predetermined inclination angle with respect to the circumferential direction of the rigid core. The strip material held by the holding machine is turned upside down and placed on the arrangement unit to construct a belt multilayer structure in which the inclination directions of the reinforcing cords of vertically adjacent belt layers are opposite to each other, thereby forming a green tire including the belt multilayer structure.
Provided are a tire and a tire mold that make it possible to emphasize the light/dark visual effect of serrations and achieve excellent visibility. A tire according to the present invention has, at a side wall part 2, an emblem part 21 and a background part 22 that surrounds the emblem part 21. One of the emblem part 21 and the background part 22 has serrations 10 that include a plurality of parallel ridges 11. Each of the ridges 11 has, in a cross-section that is orthogonal to the length direction of the ridge 11, first and second side wall surfaces 13, 14 that are at 0° or a negative gradient to a normal line L to a reference surface B on which the ridge 11 is formed, a first top surface 15 that is sloped to one side relative to the reference surface B, and a second top surface 16 that is sloped to the other side relative to the reference surface B. The first top surface 15 and the second top surface 16 are connected to each other to form a recess.
An assembly sheet includes an electrically conductive layer which includes a knitted fabric configured by mixing a yarn having electrical conductivity and a yarn having non-electrical conductivity, the knitted fabric having stretchability. The assembly sheet further includes a rubber layer provided on at least one of a main surface and another main surface of the electrically conductive layer. The assembly sheet is configured by layering the electrically conductive layer and the rubber layer.
B60C 23/04 - Dispositifs avertisseurs actionnés par la pression du pneumatique montés sur la roue ou le pneumatique
B60C 5/14 - Pneumatiques ou chambres intérieures gonflables sans éléments internes gonflables distincts, p.ex. pneumatiques sans chambre à air dont la section transversale est ouverte sur la jante avec chemise ou revêtement imperméable sur la paroi intérieure du pneumatique
