One embodiment pertains to a filter for masks obtained by folding moist nonwoven fabric of synthetic fiber in concentric pleats. Said synthetic fiber comprises 10-50 mass% of short fibers A with fiber diameter in the range of 100-1000 nm and fiber length in the range of 0.1-1 mm; and also comprises binder fibers B with fiber diameter in the range of 6-15 μm and fiber length in the range of 5-10 mm, and fibers C with fiber diameter and fiber length larger than the short fibers A and fiber diameter and fiber length smaller than the binder fibers B.
A62B 7/10 - Respiratory apparatus with filter elements
B01D 39/16 - Other self-supporting filtering material of organic material, e.g. synthetic fibres
D04H 1/72 - Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
D21H 15/02 - Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution characterised by configuration
Provided is an annular sound-absorbing material which can be used for the inside of the air chamber of a tire, and which exerts excellent noise reduction effects. Also provided is a tire, the air chamber of which is provided with said annular sound-absorbing material, and which exerts excellent noise reduction effects. An annular sound-absorbing material contains a fiber structure, and has a thickness of 1mm or more, wherein the fiber structure fulfills the following requirement (1). The requirement (1) being that the fiber structure comprise a nonelastic crimped staple fiber and a heat-bonding composite staple fiber, in which a polymer having a melting point that is lower than that of the polymer constituting the nonelastic crimped staple fiber by 40°C or more is arranged on the surface of the heat-bonding composite staple fiber as a heat-bonding component, wherein: the nonelastic crimped staple fiber and the heat-bonding composite staple fiber are blended in a manner such that the weight ratio is between 90/10 to 10/90; the adhering points, in which the heat-bonding composite staple fiber intersect and are heat bonded to one another, and/or the adhering points, in which the heat-bonding composite staple fiber and the nonelastic crimped staple fiber intersect and are heat bonded, are dispersed in the fiber structure; and the heat-bonding composite staple fiber and the nonelastic crimped staple fiber are arranged in the thickness direction of the fiber structure.
B60C 5/00 - Inflatable pneumatic tyres or inner tubes
B32B 5/26 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by the presence of two or more layers which comprise fibres, filaments, granules, or powder, or are foamed or specifically porous one layer being a fibrous or filamentary layer another layer also being fibrous or filamentary
D04H 1/54 - Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
G10K 11/16 - Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
Disclosed are: polyester fibers having excellent antibacterial properties, deodorizing properties, stain-proof properties and durability; a process for producing the polyester fibers; a cloth; a fiber product; and a polyester molded article. Polyester fibers, a cloth or a polyester molded article each comprising a polyester produced by the copolymerization of an ester-forming sulfonic acid metal salt compound and/or an ester-forming sulfonic acid phosphonium salt compound is treated with an acid, or a processing solution having a pH value of less than 7.0 is applied to the polyester fibers, the cloth or the polyester molded article, thereby adjusting the pH value of the polyester fibers, the cloth or the polyester molded article to a value less than 7.0.
D06M 11/00 - Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereofSuch treatment combined with mechanical treatment, e.g. mercerising
A41D 31/00 - Materials specially adapted for outerwear
D01F 6/62 - Monocomponent man-made filaments or the like of synthetic polymersManufacture thereof from homopolycondensation products from polyesters
D01F 6/84 - Monocomponent man-made filaments or the like of synthetic polymersManufacture thereof from copolycondensation products from copolyesters
D01F 8/14 - Conjugated, i.e. bi- or multicomponent, man-made filaments or the likeManufacture thereof from synthetic polymers with at least one polyester as constituent
D02G 1/02 - Producing crimped or curled fibres, filaments, yarns or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e . by imparting false twist
D03D 15/00 - Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
D04B 1/16 - Other fabrics or articles characterised primarily by the use of particular thread materials synthetic threads
Provided is a communication sheet structure that is used in combination with IC tags, exhibits stable readability, and can be easily introduced/installed into existing shelves. Also provided is an information management system that uses the aforementioned communication sheet structure. Said communication sheet structure comprises at least three layers: a conductor layer (A), a base layer, and a conductor layer (B), layered in order. The communication sheet structure is characterized in that the planar width thereof, in a direction orthogonal to the direction of travel of electromagnetic waves to be transmitted, is roughly equal to an integer multiple of half the wavelength of said electromagnetic waves, so as to provide a resonant condition in the width direction. The conductor layer (A) contains a contiguous conductive section (A) and a nonconductive section (A), the electrical resistance of the conductive section (A) being at most 1 Ω/sq. The base layer comprises a resin molded body or fiber structure having a relative permittivity between 1.0 and 5.0 for frequencies between 800 MHz and 10 GHz. The conductor layer (B) has a conductive section (B) that constitutes at least 90% of the area of the conductor layer (B) and has an electrical resistance of at most 1 Ω/sq.
Disclosed is a skin material for a vehicle interior member, which is configured of a fabric that has been dyed and contains polylactic acid filaments. The skin material for a vehicle interior member has excellent fabric strength even after being exposed in a wet heat environment. Specifically disclosed is a skin material for a vehicle interior member, which is configured of a fabric that has been dyed and contains polylactic acid filaments, and which has a tensile strength of not less than 400 N/50 mm as measured in accordance with JIS L1096.8.12 (1999) after being exposed to an environment at a temperature of 50˚C and at a humidity of 95% RH for 1,000 hours.
D03D 15/00 - Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
D01F 6/62 - Monocomponent man-made filaments or the like of synthetic polymersManufacture thereof from homopolycondensation products from polyesters
D01F 6/92 - Monocomponent man-made filaments or the like of synthetic polymersManufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of polyesters
B60N 2/90 - Details or parts not otherwise provided for
B60R 13/02 - Trim mouldingsLedgesWall linersRoof liners
6.
POLYESTER FIBER, PROCESS FOR PRODUCING THE POLYESTER FIBER, AND TIRE CODE, TIRE, FIBER MATERIAL FOR REINFORCING BELT AND BELT EACH COMPRISING THE POLYESTER FIBER
Disclosed is a polyester fiber which does not have disadvantages such as voids caused by catalyst particles or the like, exhibits a narrow range of physical properties variation, rarely undergoes the formation of fluffs. The polyester fiber comprises layered nanoparticles each of which comprises a bivalent metal and a phosphorus compound, is 5 to 100 nm on a side and has an interlayer spacing of 1 to 5 nm. Also disclosed are a tire code, a tire, a fiber material for reinforcing a belt, and a belt, each of which comprises the polyester fiber.
D01F 6/92 - Monocomponent man-made filaments or the like of synthetic polymersManufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of polyesters
B60C 9/00 - Reinforcements or ply arrangement of pneumatic tyres
C08K 5/5317 - Phosphonic compounds, e.g. R—P(:O)(OR')2
C08L 67/02 - Polyesters derived from dicarboxylic acids and dihydroxy compounds
D02G 3/02 - Yarns or threads characterised by the material or by the materials from which they are made
D03D 1/00 - Woven fabrics designed to make specified articles
D03D 15/00 - Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
7.
ANTISTATIC ULTRAFINE FIBERS AND METHOD FOR PRODUCING THE SAME
Provided are antistatic polyester ultrafine fibers of superior durability. Also provided is a method for producing the same. Antistatic polyester ultrafine fibers are endowed with a variety of properties, such as UV-blocking activity, cation dyeability, flame retardence, spun-like bulkiness, soft surface texture and spring, repellency, dry texture, natural texture and spunized appearance, wool-like texture, wrinkle resistance, water absorbency and fast dryability, by introduction of a third component to the antistatic polyester ultrafine fibers, the formation of composite fibers with other fibers, modification of the cross-sectional shape, and the like.
D02G 1/02 - Producing crimped or curled fibres, filaments, yarns or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e . by imparting false twist
D01F 8/14 - Conjugated, i.e. bi- or multicomponent, man-made filaments or the likeManufacture thereof from synthetic polymers with at least one polyester as constituent
D02G 3/02 - Yarns or threads characterised by the material or by the materials from which they are made
Disclosed are a slippage prevention tape that has excellent slippage preventing effects and is gentle to the skin, and a textile product formed using the slippage prevention tape. A fabric having a woven construction or a knitted construction is obtained using a filament thread (A) with a monofilament diameter of 10-1000 nm. After the slippage prevention tape is obtained using said fabric, a textile product such as a brassiere is obtained using said slippage prevention tape.
Because ultrafine multifilaments wherein deodorizing agents having particle diameters greater than the mean diameter of the ultrafine single fibers are present on the fiber surface in a form where they are not covered by the polymer, the deodorizing function is markedly improved. Consequently, fabric configured from said multifilaments has an enduring deodorizing function, and as polyester fabric that also excels in strength and feel, is useful for applications such as medical uses and interior uses, as well as clothing uses such as for sports, casual wear and men’s and women’s suits.
D01F 6/92 - Monocomponent man-made filaments or the like of synthetic polymersManufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of polyesters
D01F 8/04 - Conjugated, i.e. bi- or multicomponent, man-made filaments or the likeManufacture thereof from synthetic polymers
D01F 8/14 - Conjugated, i.e. bi- or multicomponent, man-made filaments or the likeManufacture thereof from synthetic polymers with at least one polyester as constituent
A sheet structure for performing communication by making an electromagnetic wave propagate is composed of a planar base material having a dielectric constant of 1.0-15.0 at a frequency of 800 MHz to 10 GHz. Portions where a conductor (A) exists and does not exist are provided on one side of the base material, and a conductor (B) exists on the other side of the base material over 90% or more of the entire surface. The sheet structure for communication exhibits extremely excellent communication performance and two-dimensional communication is made possible by using the sheet structure for communication.
H04B 5/02 - Near-field transmission systems, e.g. inductive loop type using transceiver
G06K 17/00 - Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups , e.g. automatic card files incorporating conveying and reading operations
H04B 13/00 - Transmission systems characterised by the medium used for transmission, not provided for in groups
11.
POLYETHYLENE NAPHTHALATE FIBER AND PROCESS FOR PRODUCING THE SAME
A polyethylene naphthalate fiber comprising ethylene naphthalate units as main repeating units. The polyethylene naphthalate fiber is characterized in that the fiber, when analyzed by X-ray wide-angle diffractometry, has a crystal volume of 100-200 nm3 and a crystallinity of 30-60%. Preferably, the fiber in X-ray wide-angle diffractometry has a maximum peak diffraction angle of 23.0-25.0° and the exothermic-peak energy as measured during cooling at a cooling rate of 10 °C/min in a nitrogen gas stream (ﶴHcd) is 15-50 J/g. Also provided is a process for producing the fiber, characterized in that a polymer in a molten state which contains a specific phosphorus compound is used and the spinning speed is 4,000-8,000 m/min. The process is further characterized in that the molten polymer ejected from the spinneret is passed, immediately after the ejection, through a heating spinning cylinder having a temperature higher by more than 50°C than the molten-polymer temperature and is stretched.
Disclosed is a polyethylene naphthalate fiber characterized in that the crystal volume and the crystallinity of the fiber obtained by wide-angle X-ray diffractometry are 100 to 200 nm3 and 30 to 60%, respectively. Preferably, the maximum peak diffraction angle in the wide-angle X-ray diffraction pattern is 23.0 to 25.0 degrees. Also disclosed is a process for producing the polyethylene naphthalate fiber, characterized in that a specific phosphorus compound is added into a polymer during melting, the spinning rate is 4000 to 8000 m/min, and, immediately after delivery through a spinneret, the molten polymer is passed through a heating spinning cylinder having a high temperature, which is more than 50°C above the temperature of the molten polymer, and is stretched.
Disclosed is a polyethylene naphthalate fiber characterized in that the crystal volume and the crystallinity of the fiber obtained by wide-angle X-ray diffractometry are 550 to 1200 nm3 and 30 to 60%, respectively. Preferably, the maximum peak diffraction angle in the wide-angle X-ray diffraction pattern is 25.5 to 27.0 degrees, and the melting point is 285 to 315°C. Also disclosed is a process for producing the polyethylene naphthalate fiber, characterized in that a specific phosphorus compound is added into a polymer during melting, the spinning draft ratio is 100 to 5000 after delivery through a spinneret, and, immediately after delivery through the spinneret, the molten polymer is passed through a heat insulating spinning cylinder having a temperature within ±50°C of the temperature of the molten polymer and is stretched.
A polyethylene naphthalate fiber comprising ethylene naphthalate units as main repeating units. The polyethylene naphthalate fiber is characterized in that the fiber, when analyzed by X-ray wide-angle diffractometry, has a crystal volume of 550-1,200 nm3 and a crystallinity of 30-60%. It is preferred that the fiber in X-ray wide-angle diffractometry has a maximum peak diffraction angle of 25.5-27.0° and the fiber has a melting point of 285-315°C. Also provided is a process for producing the fiber, characterized in that a polymer in a molten state which contains a specific phosphorus compound is used and the spinning draft ratio after ejection from a spinneret is 100 to 5,000. The process is further characterized in that the molten polymer ejected from the spinneret is passed, immediately after the ejection, through a heat-maintaining spinning cylinder having a temperature within the ±50°C range based on the temperature of the molten polymer and is stretched.
Provided are: a fabric having breathability which decreases upon absorption of moisture, and which is made using fibers having a crimp percentage which increases upon absorption of moisture; and textile products made therefrom. This fabric is characterized by the inclusion of crimped fibers (A) wherein the crimp percentage upon moisture absorption (HC%) and the crimp percentage when dry (DC%) have a difference (HC-DC) of 0.5% or more. 'When dry' refers to the condition after leaving a sample for 24 hours in an environment with a temperature of 20°C and relative humidity of 65%, and 'upon moisture absorption' refers to the condition after leaving a sample for 24 hours in an environment with a temperature of 20°C and relative humidity of 90%.
D04B 21/16 - Fabrics characterised by the incorporation by knitting, in one or more thread, fleece, or fabric layers, of reinforcing, binding, or decorative threadsFabrics incorporating small auxiliary elements, e.g. for decorative purposes incorporating synthetic threads
A41D 13/00 - Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
A41D 31/00 - Materials specially adapted for outerwear
D01F 8/14 - Conjugated, i.e. bi- or multicomponent, man-made filaments or the likeManufacture thereof from synthetic polymers with at least one polyester as constituent
D03D 15/00 - Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
16.
SURFACE-TREATED FIBER, RESIN COMPOSITION, AND MOLDED ARTICLE OF THE COMPOSITION
Disclosed is a resin composition which comprises a fiber and a polyolefin resin, and which enables the production of a molded article having excellent mechanical strength including bending strength and impact resistance. Specifically disclosed is a resin composition comprising: (i) a surface-treated fiber (A) which comprises 100 parts by weight of a fiber (A-I) comprising a polyalkylene terephthalate and/or a polyalkylene naphthalene carboxylate and 0.1 to 10 parts by weight of a sizing agent (A-II), wherein the sizing agent (A-II) is adhered on the surface of the fiber (A-I); and (ii) a polyolefin resin modified with an unsaturated carboxylic acid and/or an unsaturated carboxylic acid derivative (a modified polyolefin resin (B)) as a resin component.
D06M 15/227 - Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of hydrocarbons, or reaction products thereof, e.g. afterhalogenated or sulfochlorinated
D06M 15/564 - Polyureas, polyurethanes or other polymers having ureide or urethane linksPrecondensation products forming them
Disclosed is a normal pressure cation dyeable polyester which can be cation-dyed under normal pressure and has high strength. Specifically disclosed is a normal pressure cation dyeable polyester, which is a polyester copolymer having an ethylene terephthalate as the main repeating unit, wherein a sulfoisophthalic acid metal salt (A) and a compound (B) such as a sulfoisophthalic acid phosphonium salt are contained in an acid component constituting the polyester in such amounts that both the two mathematical formulae are fulfilled. Preferably, the polyester copolymer has a glass transition temperature of 70 to 85˚C and an intrinsic viscosity of 0.55 to 1.00 dL/g. Also disclosed is a polyester fiber produced by conducting the melt spinning of the polyester copolymer.
Disclosed is a method for producing a dyed fabric structure which has not only biodegradability but also excellent wear resistance and soft texture. Also disclosed are a fabric structure and an automobile interior material. Specifically, a fabric structure which contains polylactic acid fibers having a melting point as measured by DSC of not less than 195˚C is dyed, and then, if necessary, formed into an automobile interior material.
D01F 6/92 - Monocomponent man-made filaments or the like of synthetic polymersManufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of polyesters
D06P 5/08 - After-treatment with organic compounds macromolecular
19.
PROCESS FOR PRODUCTION OF FABRICS, FABRICS AND TEXTILE GOODS
A process for producing a fabric which exhibits gloss varying dependent on visual angle without impairing the soft hand and a fabric as described above which further exhibits excellent aesthetics, such fabrics, and textile goods. The process for the production of fabric is characterized by pressing and heating a fabric which contains an organic fiber (A) having a single-fiber diameter of 50 to 1500nm and has a weave or knit texture. The fabric which further exhibits excellent aesthetics is characterized by further containing an organic fiber (B) having a single-fiber diameter larger than 1500nm in addition to the fiber (A).
A41D 31/00 - Materials specially adapted for outerwear
B60J 3/02 - Antiglare equipment associated with windows or windscreensSun visors for vehicles adjustable in position
B60N 2/90 - Details or parts not otherwise provided for
B60R 13/02 - Trim mouldingsLedgesWall linersRoof liners
D03D 15/00 - Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
20.
POLYESTER WITH IMPROVED HEAT RESISTANCE PRODUCED FROM BIOMASS ETHYLENE GLYCOL
A polyester having improved heat resistance for which use was made, as a diol ingredient, of ethylene glycol (EG) which is derived from a biomass and has a 14C concentration of 80% or higher based on that 14C concentration in cyclic carbon at the year 1950 contained in all carbon atoms which is taken as 100%. The polyester is a poly(ethylene/aromatic dicarboxylate ester) having a 14C concentration of 11% or higher based on that 14C concentration in cyclic carbon at the year 1950 contained in all carbon atoms which is taken as 100%. Also provided is a process for producing a poly(ethylene/aromatic dicarboxylate ester) in which the dimethyl ester of an aromatic dicarboxylic acid is used as an acid-ingredient raw material and EG having a 14C concentration of 80% or higher based on that 14C concentration in cyclic carbon at the year 1950 contained in all carbon atoms which is taken as 100% is used as a diol-ingredient raw material.
1 represents an alkyl group having from 2 to 12 carbon atoms, and melt polycondensed polyethylene terephthalate has an intrinsic viscosity of from 0.48 to 0.53 dL/g and a terminal carboxyl number of from 14 to 22 mmol/kg; and a step of solid phase polycondensation to obtain solid phase polycondensed polyethylene terephthalate having an intrinsic viscosity of from 0.70 to 0.86 dL/g, and a terminal carboxyl number of less than 15 mmol/kg, followed by a step of applying an aqueous solution of at least one salt selected from the group consisting of acetate, carbonate, and sulfate of sodium, potassium, or cesium to the solid phase polycondensed polyethylene terephthalate, and then drying the polyethylene terephthalate, wherein the final content of sodium, potassium or cesium atom in dried polyethylene terephthalate is from 2 to 25 ppm.
A polyester multifilament (A) which is made of a polyester having a matting agent content of 0.5 wt.% or lower and has a single-fiber diameter of 50-1,500 nm and a polyester multifilament (B) which is made of a polyester having a matting agent content of 0.5 wt.% or lower and has a single-fiber diameter of 3 쎽m or larger are used to obtain a fabric. Subsequently, a sheet comprising an organic material is laminated, according to need, to the fabric to form a composite sheet. The fabric or composite sheet is used to obtain a polishing cloth or wiping product.
D03D 15/00 - Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
A fabric material useful for sports, such as paraglider, hang glider and yacht sail. There is provided a composite fabric including a ground fabric of polyester fiber woven fabric and an infused adhering layer of silicone copolymerized urethane resin infused in and adhering to the ground fabric. The composite fabric is characterized in that the ground fabric has a mass of 20 to 80 g/m2, and that the content of infused adhering layer relative to the mass of the ground fabric is in the range of 5 to 40 mass%, and that the mass% of the composite fabric is in the range of 21 to 100 g/m2 and the air permeability of the composite fabric is 1.0 ml/cm2/sec.
D06M 15/564 - Polyureas, polyurethanes or other polymers having ureide or urethane linksPrecondensation products forming them
D03D 1/00 - Woven fabrics designed to make specified articles
D06M 15/643 - Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain
After dressing an animal with a full body suit type wound-protection wear made of a stretchable fabric, wherein at least one of the lengthwise elongation percentage and the crosswise elongation percentage is 40% or more and at least one of the lengthwise elastic recovery percentage of elongation and the crosswise elastic recovery percentage of elongation is 80% or more, the wound-protection wear is partly cut off, if required. The wound-protection wear for the animal thus obtained is easy to put on and take off, has an appropriate tightness (giving no pain to the animal), and enables wound protection while covering various affected parts inthe body of the animal. As a result, a veterinarian or owner can effectively treat the animal.
A01K 13/00 - Devices for grooming or caring of animals, e.g. curry-combsFetlock ringsTail-holdersDevices for preventing crib-bitingWashing devicesProtection against weather conditions or insects
It is intended to provide an underwear which shows a high tightness to the skin and good shape retention properties. Namely, an underwear including a fabric having a woven structure, a knitted structure or a non-woven structure, characterized in that the above-described fabric comprises filament strands A having a single filament diameter of 10 to 1000 nm and filament strands B having a single filament diameter exceeding 1000 nm and the above-described filament strands A are exposed to the face that is to be brought into contact with the skin.
D04B 21/16 - Fabrics characterised by the incorporation by knitting, in one or more thread, fleece, or fabric layers, of reinforcing, binding, or decorative threadsFabrics incorporating small auxiliary elements, e.g. for decorative purposes incorporating synthetic threads
26.
MONOFILAMENT FOR SCREEN FABRIC AND PROCESS FOR PRODUCTION OF SCREEN FABRIC
A high-mesh and high-modulus screen fabric excellent in the stability in weaving, the stability as screen fabric, and continuous printing performance can be obtained by subjecting a woven fabric constituted of monofilaments for screen fabric which exhibit, after moist-heat treatment, a degree of inclination change (B/A ratio) of 0.6 or above but below 1.0 in the elongation-stress curve wherein A is an inclination just before the primary yield point and B is that just after the primary yield point to treatment with boiling water, heat-setting the treated fabric in a state stretched by 0.2 to 5% in the both warp and weft directions, and then setting the resulting fabric in a state further stretched by 0.3 to 5%.
D01F 8/14 - Conjugated, i.e. bi- or multicomponent, man-made filaments or the likeManufacture thereof from synthetic polymers with at least one polyester as constituent
D03D 15/00 - Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
D03D 15/02 - Woven fabrics characterised by the material or construction of the yarn or other warp or weft elements used the warp or weft elements being of stiff material, e.g. wire, cane, slat
Disclosed is a wet-laid non-woven fabric comprising two or more types of fibers. Specifically disclosed is a wet-laid non-woven fabric comprising a short fiber A in an amount of 4 to 50 wt% and a binder fiber B in an amount of 10 to 50 wt% both relative to the total weight of the non-woven fabric, wherein the short fiber A comprises a fiber-forming thermoplastic polymer, has a fiber diameter (D) of 100 to 1000 nm and has a ratio of the fiber length (L) to the fiber diameter (D) (i.e., a L/D ratio) of 100 to 2500, and wherein the binder fiber B has a single fiber fineness of 0.1 dtex or less.
B01D 39/16 - Other self-supporting filtering material of organic material, e.g. synthetic fibres
D01F 6/62 - Monocomponent man-made filaments or the like of synthetic polymersManufacture thereof from homopolycondensation products from polyesters
D01F 8/04 - Conjugated, i.e. bi- or multicomponent, man-made filaments or the likeManufacture thereof from synthetic polymers
D01F 8/14 - Conjugated, i.e. bi- or multicomponent, man-made filaments or the likeManufacture thereof from synthetic polymers with at least one polyester as constituent
D06M 11/00 - Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereofSuch treatment combined with mechanical treatment, e.g. mercerising
D06M 11/38 - Oxides or hydroxides of elements of Groups 1 or 11 of the Periodic Table
D21H 15/02 - Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution characterised by configuration
Disclosed is a thin paper having an areal weight of 5 to 30 g/m2, and comprising a short fiber A and a binder fiber (B) at a [(short fiber A)/(binder fiber B)] ratio of 90/10 to 50/50 by weight, wherein the short fiber A comprises a fiber-forming thermoplastic polymer, has a fiber diameter (D) of 100 to 1000 nm and has a ratio of the fiber length (L) to the fiber diameter (D) (i.e., a L/D ratio) of 500 to 2500, and wherein the binder fiber B has a single fiber fineness of 0.1 dtex or less.
Disclosed is a polyethylene naphthalate fiber for use as an industrial material showing less fatigue in a complex. The polyethylene naphthalate fiber comprises an ethylene-2,6-naphthalate unit in an amount of 80% or more and has a strength of 6 cN/dtex or more or an elongation at secondary yield point of 8% or less. Also disclosed is a method for producing the polyethylene naphthalate fiber by melting and stretching polyethylene naphthalate to produce a fiber, and stretching the fiber, which is characterized by conducting the pre-stretching at a fiber temperature of 80 to 120°C and a pre-stretch tension of 0.05 to 0.3 N/dtex, conducting a first stretching at a fiber temperature of 130 to 180°C and a drawing tension of equal to or lower than the prestretch tension, repeating the stretching until the draw ratio reaches 5 times or greater, and finally conducting heat stretching at a stretch ratio of 0 to 2%.
A waterproof moisture-permeable fabric for garment comprising polyester fabric (A) and, superimposed on one major surface thereof, waterproof moisture-permeable layer (B) of colorless transparent polyester film and further comprising, partially superimposed thereon, white or gray resin (C); and a garment utilizing the waterproof moisture-permeable fabric. Preferably, the waterproof moisture-permeable layer (B) is overlaid with moisture-permeable polymer resin (D) containing inorganic microparticles and further partially overlaid with the white or gray resin (C).
Disclosed is a method for collecting a useful component from a polyester fiber waste mainly comprising a polyalkylene terephthalate, specifically for separating/removing a foreign material (in the most cases, cotton) from a polyester fiber waste. Specifically disclosed is a method for separating/removing a foreign material other than a polyalkylene terephthalate from a polyester fiber waste which mainly comprises the polyalkylene terephthalate and contains the foreign material. The method comprises the steps of charging the polyester fiber waste into a depolymerization tank to cause a part or the whole of the polyester fiber to be depolymerized with an alkylene glycol, thereby producing a depolymerization solution; and feeding the depolymerization solution to a foreign material separation/removal apparatus having a specific characteristic properties continuously or intermitetntly.
C08J 11/24 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with organic material by treatment with organic oxygen-containing compounds containing hydroxyl groups
B01D 29/11 - Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
B01D 29/62 - Regenerating the filter material in the filter
B01D 29/94 - Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups Filtering elements therefor having feed or discharge devices for discharging the filter cake, e.g. chutes
32.
METHOD OF IMPARTING FUNCTION TO MOLDED POLYMER AND APPARATUS THEREFOR
A method of imparting a highly durable function to a polymer molding. By the method, various function-imparting agents can be efficiently imparted to a polymer molding. In the method, the amount of a waste liquid resulting from the processing can be reduced as much as possible. The waste liquid and function-imparting agents can be recovered and can be reused according to need. The function-imparting agents can be imparted to a polymer molding not batchwise but continuously. Also provided is an apparatus for the method. The method of imparting a function to a polymer molding comprises ejecting a supercritical fluid to a polymer molding to tenaciously bond a function-imparting agent to the polymer molding.
A terephthalic acid-alkylene glycol mixture suitable as a raw material mixture for polyester polycondensation reaction is obtained by preparing a liquid mixture having a temperature of 100-130˚C and containing terephthalic acid obtained by hydrolysis of dialkyl terephthalate and at least one alkylene glycol, and stirring this liquid mixture for 15 minutes to 3 hours while maintaining the liquid mixture within the above-mentioned temperature range, thereby adjusting the slurry characteristics of the liquid mixture.
Polyester multifilaments for resin reinforcement which are satisfactorily and homogeneously dispersed in a matrix resin and give a long-fiber-reinforced resin molding excellent in mechanical properties and impact resistance. The polyester multifilaments for resin reinforcement have a thermosetting resin adherent thereto in an amount of 0.01-5.0 wt.% based on the polyester multifilaments. The polyester multifilaments for resin reinforcement preferably are ones in which the length of multifilament bundle parts satisfying 1≤Y/X≤3 (wherein X represents the width of the multifilaments as measured before immersion in water and Y represents the width of the multifilaments as measured after 1-minute immersion in 25°C water) accounts for 50% or more of the length of the multifilaments before the immersion.
B29B 15/14 - Coating or impregnating of reinforcements of indefinite length of filaments or wires
C08J 5/06 - Reinforcing macromolecular compounds with loose or coherent fibrous material using pretreated fibrous materials
D06M 15/564 - Polyureas, polyurethanes or other polymers having ureide or urethane linksPrecondensation products forming them
D06M 15/70 - Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials with macromolecular compoundsSuch treatment combined with mechanical treatment combined with mechanical treatment
An organic fiber-reinforced composite resin composition that realizes good fiber dispersion, excellent appearance, excellence in mechanical strength, such as tensile elongation at break or impact strength, and facilitation of thermal recycle; and a molding obtained therefrom. There is provided an organic fiber-reinforced composite resin composition comprising 60 to 95 wt.% of (a) polyolefin resin (excluding an acid-modified polyolefin resin) and 40 to 5 wt.% of (b) organic fiber having a polar resin (excluding an acid-modified polyolefin resin) adhering thereto, provided that the relationship resin (a) + fiber (b) = 100 wt.%. Further, there is provided an organic fiber-reinforced composite resin composition comprising 10 to 200 parts by weight of organic fiber per 100 parts by weight of polyolefin resin, the composition exhibiting an Izod impact strength at -40°C of 10 kJ/m2 or higher. Still further, there is provided an organic fiber-reinforced composite resin molding obtained from the above compositions.
C08J 5/06 - Reinforcing macromolecular compounds with loose or coherent fibrous material using pretreated fibrous materials
36.
ANTISTATIC CORE-SHEATH TYPE ULTRAFINE-DENIER FALSE-TWISTED POLYESTER YARN, PROCESS FOR PRODUCTION THEREOF, AND ANTISTATIC WATER-REPELLENT FABRICS COMPRISING THE YARN
Since the false-twisted polyester yarn of the invention contains an antistatic component in a state enveloped in a sheath, the antistatic component is little deformed by false twisting. Therefore, the yarn little fluffs in false twisting and can give a polyester fabric which is improved in antistatic properties while retaining the soft hand, hot insulation, and water- and moisture-absorbing properties inherent in conventional ultrafine-denier false-twisted polyester yarn. The antistatic component of the yarn of the invention is excellent in heat resistance as compared with conventional polyether amide antistatic agents, so that the fabric is excellent in washing durability in a state dyed by the high-pressure method and thus useful as antistatic fabric for student's wear, uniform, dust protective wear, and so on.
D02G 1/02 - Producing crimped or curled fibres, filaments, yarns or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e . by imparting false twist
D01F 8/14 - Conjugated, i.e. bi- or multicomponent, man-made filaments or the likeManufacture thereof from synthetic polymers with at least one polyester as constituent
D02G 3/02 - Yarns or threads characterised by the material or by the materials from which they are made
37.
FILTER FOR EXTRACTING LUXURY DRINK AND BAG FOR EXTRACTING LUXURY DRINK
A filter for extracting a luxury drink being composed of polyester-based monofilaments and having a woven texture or a knitted texture, characterized in that the filter comprises polyester-based monofilaments having a flat cross section shape; and a bag filter for extracting a luxury drink in which the filter for extracting a luxury drink is used.
A reinforcement fiber cord excellent in adhesiveness can be produced by subjecting a loosely woven fabric constituted of warps for reinforcement fiber cord and wefts having a softening point and a melting point which are lower than any of the softening point, melting point and thermal decomposition initiating temperature of the warps to impregnation with an adhesive and heat-treating the impregnated woven fabric at a temperature which is equal to or higher than the softening or melting point of the wefts and at which the warps do not soften, melt or thermally decompose to make the wefts adhere or fuse to the adhesive -impregnated warps through the self-breaking of the wefts and thereby form on the warps projections out of breaking residue of the wefts adhering or fusing to the warps.
D06M 15/693 - Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials with macromolecular compoundsSuch treatment combined with mechanical treatment with natural or synthetic rubber, or derivatives thereof
39.
ANTISTATIC POLYESTER FALSE TWIST YARN, PROCESS FOR PRODUCING THE SAME, AND ANTISTATIC SPECIAL COMPOSITE FALSE TWIST YARN INCLUDING THE ANTISTATIC POLYESTER FALSE TWIST YARN
An unstretched multifilament yarn made of a PET type aromatic polyester containing a polyoxyalkylene polyether and an organic ionic compound is stretched and simultaneously false-twisted under specific conditions. The false twisting is stably conducted at a high speed without causing section deformation or fluffing to thereby give a yarn of a fibrous structure having an excellent texture and unsusceptibility to fibrillation. Thus, a polyester false twist yarn having excellent long-term antistatic properties is produced. The unstretched yarn in combination with an unstretched polyester yarn comprising a poly(methyl methacrylate) polymer and/or polystyrene polymer is stretched and simultaneously false-twisted under specific conditions to thereby stably produce at a high speed a composite false twist yarn which is free from fluffing, has excellent bulkiness, gives a spun-yarn feeling, and has excellent long-term antistatic properties. This composite false-twisted yarn is useful especially in applications where static electricity is desired to be diminished, such as school uniforms, uniforms, and dust-proof clothing.
D02G 1/02 - Producing crimped or curled fibres, filaments, yarns or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e . by imparting false twist
D01F 6/92 - Monocomponent man-made filaments or the like of synthetic polymersManufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of polyesters
A method for separating and recovering a high-purity polyester ingredient in a high recovery from polyethylene terephthalate bottle wastes constituted of polyethylene and/or polypropylene, polystyrene, and polyester. The wastes can be continuously treated in large quantities. The method for separating waste plastics is characterized in that plastics crushed are mixed with water to prepare an aqueous slurry thereof beforehand and the aqueous slurry is supplied to a cylindrical tank at a rate in a certain range so as to result in a rotational flow and so that the water level ascends at a rate in a certain range, and that a polyester having a high specific gravity is recovered as a sedimentation ingredient sedimenting in the cylindrical tank, while a plastic having a low specific gravity is recovered as an overflow ingredient through an upper part of the cylindrical tank.
A knit fabric comprising a composite yarn, characterized in that the composite yarn is composed of two or more crimped false twist yarns and has a torque of 30 T/m or less.
Disclosed is a membrane material for gas holders which has high gas barrier properties, while having wear resistance and bending resistance sufficient for gas holders in addition to the strength of the base fabric. Specifically disclosed is a membrane material used for a gas holder for storing or recovering a gas. The membrane material is composed of at least four layers, namely a protective layer, a base fabric layer, a gas barrier layer and another protective layer.
F17B 1/26 - Gas-holders of variable capacity of dry type with flexible walls, e.g. bellows
B32B 5/02 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by structural features of a layer comprising fibres or filaments
The main object is to provide a process for producing polyethylene terephthalate which employs bis-(2-hydroxyethyl)terephthalate as a starting material, can produce polyethylene terephthalate at a good polymerization rate without the need of addition of other polyester monomer such as terephthalic acid and can reduce the occurrence of clogging which may be caused by flying oligomers. A process for producing polyethylene terephthalate comprising the step of polymerizing bis-(2-hydroxyethyl)terephthalate using a titanium compound as a catalyst.
A canvas for use to provide an uneven surface of synchronous belt, comprising warp and weft yarns, wherein the warp yarns consist of a composite thread having a coat yarn composed mainly of a high-strength highly thermostable fiber, the coat yarn preferably twisted at 300 to 4000 twists/m, wound around a core yarn composed mainly of a semistretch synthetic fiber thread of 50 to 200% elongation at break. This canvas facilitates weaving for production and has uniform appearance and stitch distribution and excellent abrasion resistance.
Self-expandable heat-bondable composite fibers which are made from polyethylene terephthalate as a fiber-forming resin ingredient and have a low modulus. The self-expandable heat-bondable composite fibers are made from a fiber-forming resin ingredient and a heat-bondable resin ingredient, and are characterized in that the fiber-forming resin ingredient comprises polyethylene terephthalate, the heat-bondable resin ingredient comprises a crystalline thermoplastic resin having a melting point lower by at least 20°C than that of the fiber-forming resin ingredient, and the fibers have an elongation at break of 130-600%, a tensile strength at 100%elongation of 0.3-1.0 cN/dtex, and a degree of shrinkage in 120°C dry heating lower than -1.0%. Also provided is a process for producing the composite fibers.
D01F 8/14 - Conjugated, i.e. bi- or multicomponent, man-made filaments or the likeManufacture thereof from synthetic polymers with at least one polyester as constituent
D02J 1/22 - Stretching or tensioning, shrinking or relaxing, e.g. by use of overfeed and underfeed apparatus, or preventing stretch
D04H 1/541 - Composite fibres e.g. sheath-core, sea-island or side-by-sideMixed fibres
46.
PROCESS FOR PRODUCTION OF POLYETHYLENE TEREPHTHALATE
Disclosed is a process for production of a polyethylene terephthalate, which comprises the steps of: conducting melt polycondensation by using a compound represented by the general formula (I) as a polycondensation catalyst to yield a melt-polycondensed polyethylene terephthalate having an intrinsic viscosity ranging from 0.48 to 0.53 dL/g and the number of terminal carboxyl groups ranging from 14 to 22 mmol/kg; and subjecting the melt-polycondensed polyethylene terephthalate to solid-state polycondensation to yield a solid-state-polycondensed polyethylene terephthalate having an intrinsic viscosity ranging from 0.70 to 0.86 dL/g. (I) wherein R1 represents an alkyl group having 2 to 12 carbon atoms. It becomes possible to provide a polyethylene terephthalate which can be molded into an article having a reduced acetaldehyde content and a reduced oligomer content.
[PROBLEMS] To provide a cushion body capable of ensuring both of soft tactile sensation and durability, and provide a sitting seat containing the cushion body and a process for manufacturing them. [MEANS FOR SOLVING PROBLEMS] There is provided cushion body (11) comprising low-density sheet-shaped fiber structure (4a) having web (2) laminated so that the direction of outward extension thereof is along the direction of thickness (T) and, laid thereon, high-density sheet-shaped fiber structure (4b) exhibiting a degree of sagging under load in the direction of thickness (T) smaller than that of the low-density sheet-shaped fiber structure (4a), wherein the low-density sheet-shaped fiber structure (4a) is arranged on the side of sitting surface (10a) as compared with the high-density sheet-shaped fiber structure (4b). The low-density sheet-shaped fiber structure (4a) on the side of sitting surface (10a) extensively sags under load from outside the cushion body (11) by sitting, so that the sitter has soft tactile sensation. On the other hand, the high-density sheet-shaped fiber structure (4b) has a low degree of sagging and retains certain hardness, so that permanent setting in the direction of loading is suppressed to thereby ensure durability.
A47C 27/12 - Spring, stuffed or fluid mattresses specially adapted for chairs, beds or sofas with fibrous inlays, e.g. made of wool, of cotton
D04H 1/42 - Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
D04H 1/50 - Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by treatment to produce shrinking, swelling, crimping or curling of fibres
D04H 1/58 - Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
D04H 1/60 - Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in dry state, e.g. thermo-activatable agents in solid or molten state, and heat being applied subsequently
A yarn containing a side-by-side or eccentric core-sheath type conjugated fiber made of polyester and polyamide which is heat-crimpable and whose percentage of crimp is increased by the absorption of moisture or water can give fabrics which are excellent in wind-barrier and warmth-retaining properties and have wool-like soft and bulky hand and which are little increased in see-through even when wetted with water.
D01F 8/14 - Conjugated, i.e. bi- or multicomponent, man-made filaments or the likeManufacture thereof from synthetic polymers with at least one polyester as constituent
D02G 1/00 - Producing crimped or curled fibres, filaments, yarns or threads, giving them latent characteristics
D02G 3/24 - Bulked yarns or threads, e.g. formed from staple fibre components with different relaxation characteristics
49.
HEAT-BONDABLE CONJUGATED FIBER AND PROCESS FOR PRODUCTION THEREOF
[PROBLEMS] To provide a heat-bondable conjugated fiber which is characterized by low orientation and high extension and which exhibits high bondability, low heat shrinkage and excellent cardability. [MEANS FOR SOLVING PROBLEMS] A heat-bondable conjugated fiber which is composed of a core made of a fiber-forming resin and a sheath made of a crystalline thermoplastic heat-bondable resin having a melting point lower than that of the core by 20°C or above and which has a breaking extension of 60 to 600% and a dry heat shrinkage at 120°C of -10 to 1%; and a process for the production of heat-bondable conjugated fiber, characterized by subjecting an unstretched core-sheath conjugated yarn taken off at a spinning rate of 150 to 1800m/min to fixed-length heat treatment at a temperature higher than the glass transition temperatures of both resins under 0.5- to 1.3-fold stretching and then heat-treating the resulting yarn at a temperature higher than that of the fixed-length heat treatment by 5°C or above without stretching.
The invention aims at providing a polyester fiber for air-laid nonwoven fabrics which is extremely excellent in air-laid web formability, particularly in the ejection of fibers from a screen and which enables the production of bulky air-laid nonwoven fabrics having excellent texture. The aim is attained by a process for the production of a polyester fiber for air-laid nonwoven fabrics which has either a fineness of 10dtex or below or a fiber length of 8mm or above and exhibits a number of crimp of 8.5 waves per 25mm or above, a ratio of percentage of crimp to number of crimp of 0.65 or below, a crimp modulus of elasticity of 70% or above andwhich contains as the fiber-forming resin component a polyester wherein alkylene terephthalate repeating units account for at least 80 mole% of all the repeating units, which process comprises subjecting unstretched polyester filaments taken off at a spinning speed of 1500m/min or below to both stretching at a low stretch ratio of 0.60 to 1.2 and at a temperature higher than the glass transition temperature of the polyester by 10°C or above and fixed-length heat treatment simultaneously.
D01F 8/06 - Conjugated, i.e. bi- or multicomponent, man-made filaments or the likeManufacture thereof from synthetic polymers with at least one polyolefin as constituent
D01F 8/14 - Conjugated, i.e. bi- or multicomponent, man-made filaments or the likeManufacture thereof from synthetic polymers with at least one polyester as constituent
D04H 1/42 - Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
D04H 1/70 - Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
51.
PROCESS FOR PRODUCING SEA-ISLAND-TYPE COMPOSITE SPUN FIBER
A process for producing a sea-island-type composite spun fiber whose island component has a diameter of 1 騜m or less, characterized in that an unoriented sea-island-type composite spun fiber having been spun at a spinning speed of 100 to 1000 m/min is drawn at a total draw ratio of 5 to 100 (superdrawn) at temperature higher than the glass transition temperatures of respective polymers constituting the sea component and island component of the sea-island-type composite spun fiber.
D01F 8/14 - Conjugated, i.e. bi- or multicomponent, man-made filaments or the likeManufacture thereof from synthetic polymers with at least one polyester as constituent
D02G 3/02 - Yarns or threads characterised by the material or by the materials from which they are made
D02J 1/22 - Stretching or tensioning, shrinking or relaxing, e.g. by use of overfeed and underfeed apparatus, or preventing stretch
This invention provides an electrically conductive fiber that comprises an electrically conductive material and has no significant variation in electrically conductive properties and has stable electrically conductive properties. The electrically conductive fiber comprises carbon black as a main electrically conductive component in a fiber forming polymer. The carbon black comprises a mixture of electrically conductive carbon blacks prepared by mixing two types of electrically conductive carbon blacks (A) and (B) at a mixing ratio of (A)/(B) (weight ratio) = 90/10 to 10/90. (A) An electrically conductive carbon black having an average particle diameter of 20 騜m to 70 騜m and an oil absorption of 100 to 600 ml/100 g specified in JIS K 5101. (B) An electrically conductive carbon black having an average particle diameter ratio to the electrically conductive carbon black (A) of 1.1 to 3 and an oil absorption ratio to the electrically conductive carbon black (A) of 0.9 to 0.2.
The object is to establish a method for recovering a variable ingredient which can recover a variable ingredient from a dyed polyester fiber at a high purity and which is efficient and economically advantageous. A method for the recovery of a variable ingredient from a dyed polyester fiber, the method comprising a dye extraction step in which a dye is extracted from the dyed polyester fiber, a solid/liquid separation step, a depolymerization step, a transesterification step and a step for separating the variable ingredient, the dye extraction step comprising extracting a dye with a combination of a xylene extraction solvent and an alkyleneglyol extraction solvent at a temperature ranging from the glass transition temperature of the polyester to 220˚C inclusive and then removing the extracted dye.
C08J 11/24 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with organic material by treatment with organic oxygen-containing compounds containing hydroxyl groups
C08J 11/16 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with inorganic material
C08L 67/00 - Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chainCompositions of derivatives of such polymers
There is provided a speaker formed with screen as a unitary block. Interference between channels is scarcely generated in a multi-channel structure. The speaker has a high quality and a wide sound range. The unitary block is flexible and light-weight and accordingly, can be reduced in size when stored or carried. The speaker formed with screen as a unitary block includes a screen (S) and an exciter (EX) attached to the rear surface of the screen (S). It is preferable that an excitation plate (EP) be arranged between the exciter (EX) and the screen (S).
⏧PROBLEMS] To provide a polyester monofilament which shows a high dimensional stability and excellent effects of preventing peel-off in filaments, preventing pirn barre and preventing halation and has a high fineness, a high strength and a high modulus. ⏧MEANS FOR SOLVING PROBLEMS] A core-shell type composite polyester monofilament comprising polyethylene terephthalate at a ratio of 80% by mol or higher, which satisfies the following requirements A to F: A) the intrinsic viscosity of the core component being 0.70 or above and the intrinsic viscosity of the shell component being from 0.55 to 0.60; B) the core component amounting to 50 to 70%; C) at least the shell component containing from 0.2 to 0.4% by weight of metal microparticles; D) the fineness of the monofilament being from 5 to 15 dtex, its modulus at elongation of 5% being from 3 to 4.5 cN/dtex and its elongation at break being from 20 to 40%; E) the free shrinkage of the innermost part under specific conditions being 0.3% or less; and F) the node density is one per 100,000 m or less.
D01F 8/14 - Conjugated, i.e. bi- or multicomponent, man-made filaments or the likeManufacture thereof from synthetic polymers with at least one polyester as constituent
patents
