A core spinning device and method based on a calculus principle. The device comprises a feeding unit, an auxiliary core wrapping unit (30), and a core-spun yarn winding unit (40); the auxiliary core wrapping unit (30) comprises an auxiliary core wrapping assembly (31), a pressurizing/conveying assembly (32) used for providing pressure or power for the auxiliary core wrapping assembly (31), a yarn guide assembly (33), and a wrapping area (34) used for wrapping and converging. By means of the auxiliary core wrapping unit (30), short fiber strands (S11) form short fiber strips having a certain width and comprising highly parallel and oriented fibers in the auxiliary core wrapping assembly (31); other units and assemblies of the device are also used to promote the short fiber strips to tightly wrap a core filament (F1), so as to prepare a core-spun yarn (S2) having a good wrapping effect and a large core filament proportion; the utilization of short fibers is maximized, and the raw material costs of the core-spun yarn (S2) are reduced; the problems of a core of the core-spun yarn (S2) prepared by a conventional ring spinning machine being prone to expose and the proportion of the core filament (F1) being low are solved; the core-spun yarn spinning device has low transformation costs, a wide application range, and high industrial application value.
The present disclosure discloses a color matching evaluation method combining similarity measure and visual perception. The method includes: firstly, constructing an image database with rich color information; extracting main colors from an acquired image using an improved clustering method for color matching; generating a corresponding palette using an intelligent color matching recommendation system, and evaluating a palette similarity using a minimum color difference model; then, recoloring the corresponding image using the generated palette through an image recoloring technology to obtain a recolored image, and calculating a structural similarity between the source image and the recolored image; performing feature level adaptive weighted fusion on the palette similarity and the structural similarity, and performing an eye movement tracking experiment on the source image and the recolored image to obtain visual perception data of the images.
G06T 7/90 - Détermination de caractéristiques de couleur
A61B 3/113 - Appareils pour l'examen optique des yeux; Appareils pour l'examen clinique des yeux du type à mesure objective, c. à d. instruments pour l'examen des yeux indépendamment des perceptions ou des réactions du patient pour déterminer ou enregistrer le mouvement de l'œil
Provided are a full-life-cycle multi-index synchronous testing apparatus and testing method for yarn (50a) or fabric. The testing apparatus comprises a hairiness measurement unit (10), a first guide unit (20), a tension adjustment unit (30), and a friction unit (40). The testing apparatus is used for performing cyclic friction on the friction unit (40) on a closed object to be tested having a preset length, and acquiring hairiness data in real time by means of the hairiness measurement unit (10). The tension adjustment unit (30) is a free fall-type tension adjustment unit (30) and is used for automatically adjusting in real time the tension of the object to be tested, so as to ensure the friction and transmission stability of the object to be tested. The friction stability is improved by means of providing a cyclic friction closed loop and providing the free fall-type tension adjustment unit (30) on the loop. Meanwhile, data such as the change in hairiness, number of times of wear-resistance, and the change in the length of the object to be tested are acquired in real time until the yarn (50a) or the fabric strip (50b) wears to breaking, and then properties such as the wear resistance, strength, and dynamic creep of the object to be tested are evaluated, thereby achieving synchronous and rapid testing of multiple properties of the object to be tested.
G01N 3/56 - Recherche de la résistance à l'usure ou à l'abrasion
G01N 3/02 - Recherche des propriétés mécaniques des matériaux solides par application d'une contrainte mécanique - Parties constitutives
G01N 3/08 - Recherche des propriétés mécaniques des matériaux solides par application d'une contrainte mécanique par application d'efforts permanents de traction ou de compression
G01N 21/84 - Systèmes spécialement adaptés à des applications particulières
4.
Method of digital measuring color of fabrics based on digital camera
A method of digital measuring the color of fabrics based on digital camera, includes: making plain fabric samples; obtaining ground-truth color of plain fabrics using a spectrophotometer; capturing a raw format digital image of the plain fabrics using the digital camera and extracting raw camera responses of the plain fabrics; capturing a raw format digital image of a target fabric and extracting the raw camera responses of a ROI in the target fabric; calculating a Euclidean distance and a similarity coefficient between the raw camera responses of the ROI in the target fabric and the plain fabrics; normalizing the Euclidean distance and the similarity coefficient; calculating a weighting coefficient of each color data of the plain fabrics based on the normalized Euclidean distance and similarity coefficient; weighting every color data of plain fabrics with a corresponding weighting coefficient; and summing the weighted color data of the plain fabrics.
SHANDONG ACADEMY OF ENVIRONMENTAL SCIENCES CO., LTD. (Chine)
WUHAN TEXTILE UNIVERSITY (Chine)
Inventeur(s)
Yu, Jun
Li, Qiang
Kang, Xingsheng
Ma, Tao
Ma, Guangxiang
Abrégé
The present invention provides a magnetic core-shell nanosphere for the adsorption of a phenolic pollutant, a preparation method, and an application. The preparation method comprises the following steps: preparing a nanoscale adsorption carrier; performing a first round of modification on the nanoscale adsorption carrier, and obtaining a first modified adsorption carrier; performing a second round of modification on the first modified adsorption carrier, and obtaining a second modified adsorption carrier; and performing a polymerization reaction on the second modified adsorption carrier, and obtaining a magnetic core-shell nanosphere. The present invention solves the problem where only one round of modification on a magnetic nanoparticle is performed in current preparation processes for magnetic porous adsorbents, so if the magnetic adsorbent performs adsorption in a high temperature environment, the miscibility of the magnetic nanoparticle and a polymer will be destroyed, thereby affecting the adsorption function of the magnetic adsorbent.
B01J 20/28 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtration; Absorbants ou adsorbants pour la chromatographie; Procédés pour leur préparation, régénération ou réactivation caractérisées par leur forme ou leurs propriétés physiques
B01J 20/30 - Procédés de préparation, de régénération ou de réactivation
B01J 20/02 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtration; Absorbants ou adsorbants pour la chromatographie; Procédés pour leur préparation, régénération ou réactivation contenant une substance inorganique
B01J 20/06 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtration; Absorbants ou adsorbants pour la chromatographie; Procédés pour leur préparation, régénération ou réactivation contenant une substance inorganique contenant des oxydes ou des hydroxydes des métaux non prévus dans le groupe
C02F 1/28 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par absorption ou adsorption
C02F 101/34 - Composés organiques contenant de l'oxygène
6.
CENTRIFUGAL SPINNING APPARATUS AND PLANAR RECEIVING-TYPE CENTRIFUGAL SPINNING AUTOMATIC PRODUCTION DEVICE
The present invention discloses a centrifugal spinning apparatus, including a frame, a spinning device, a feeding device for providing a spinning solution to the spinning device, and a collection device for collecting centrifugal spinning fibers ejected by the spinning device. The collection device is horizontally disposed below the spinning device, to enable the centrifugal spinning fibers ejected by the spinning device to be attached to a surface of the collection device. A planar receiving-type centrifugal spinning automatic production device using the centrifugal spinning apparatus breaks through existing centrifugal spinning based on ring collection and centrifugal spinning technologies based on electrostatic collection, resolves a preparation problem of continuous filament of the centrifugal spinning, and achieves mass production of the centrifugal spinning. The whole production process is completed automatically without manual intervention.
D01D 7/00 - Réception des produits nouvellement filés
D01D 5/18 - Formation des filaments, fils ou similaires au moyen de filières rotatives
D01D 5/253 - Formation des filaments, fils ou similaires à section transversale non circulaire; Ensembles de filage à cet effet
D01D 5/24 - Formation des filaments, fils ou similaires à structure creuse; Ensembles de filage à cet effet
D04H 1/724 - Non-tissés formés uniquement ou principalement de fibres coupées ou autres fibres similaires relativement courtes caractérisés par la méthode de formation des voiles ou couches, p.ex. par la réorientation des fibres les fibres étant disposées au hasard formation du non-tissé pendant la formation de la fibre p.ex. filage éclair
7.
Chemical regeneration method of water glass used sand
A chemical regeneration method of water glass used sand, which belongs to the field of resource recycling in the casting industry. The present invention adopts a two-component reagent composed of calcium oxide and tap water, an emulsion composed of sucrose and calcium oxide, and a calcium chloride aqueous solution to process the regeneration of the used sand, and prepares the sample of the reclaimed sand obtained after the reagent mixed with the used sand is sealed and placed for 0 to 24 hours respectively, and tests the properties of the sample including: initial strength, final strength and collapsibility, and sodium carbonate content, and compares the properties of raw sand and used sand after the tests. Among several regeneration methods, each property index of the reclaimed sand obtained by using calcium oxide and tap water to regenerate for 12 hours is the best.
B22C 5/04 - Machines ou dispositifs spécialement conçus pour la préparation ou la manutention des matériaux à mouler, dans la mesure où ils sont spécialement adaptés à cette fin par broyage, mélange, malaxage, agitation
B22C 1/02 - Compositions des matériaux réfractaires pour moules ou noyaux; Leur structure granulaire; Caractéristiques chimiques ou physiques de la mise en forme ou de la fabrication des moules caractérisées par des additions pour applications particulières, p.ex. indicateurs, addition pour faciliter la destruction du moule
B22C 5/06 - Machines ou dispositifs spécialement conçus pour la préparation ou la manutention des matériaux à mouler, dans la mesure où ils sont spécialement adaptés à cette fin par tamisage ou séparation magnétique
8.
MULTIFUNCTIONAL SENSING INTEGRATED FLEXIBLE FABRIC-BASED SENSOR AND USE THEREOF
A multifunctional sensing integrated flexible fabric-based sensor and a use thereof. The flexible fabric-based sensor consists of yarns formed by respectively wrapping a pressure sensing yarn, a temperature sensing yarn and a humidity sensing yarn around an electrode, or consists of yarns formed by wrapping a pressure sensing yarn around a temperature sensing yarn and a humidity sensing yarn respectively. The pressure sensing yarn, the temperature sensing yarn and the humidity sensing yarn are all subjected to corresponding anti-interference processing; and by acquiring signals at two ends of each yarn and signals at yarn intersection points, and performing signal conversion and processing, the high integration of pressure, temperature and humidity sensing can be realized, and the simultaneous measurement and effective distinguishing of pressure, temperature and humidity can also be realized. In addition, the present invention is comfortable, and can be used for electronic skins or smart clothing.
G01L 1/22 - Mesure des forces ou des contraintes, en général en faisant usage des cellules électrocinétiques, c. à d. des cellules contenant un liquide, dans lesquelles un potentiel électrique est produit ou modifié par l'application d'une contrainte en utilisant des jauges de contrainte à résistance
G01L 1/14 - Mesure des forces ou des contraintes, en général en mesurant les variations de la capacité ou de l'inductance des éléments électriques, p.ex. en mesurant les variations de fréquence des oscillateurs électriques
G01K 7/02 - Mesure de la température basée sur l'utilisation d'éléments électriques ou magnétiques directement sensibles à la chaleur utilisant des éléments thermo-électriques, p.ex. des thermocouples
9.
NOVEL CHEMICAL RECLAIMING METHOD FOR USED SODIUM SILICATE SAND
The present invention relates to the field of resource recovery and utilization in the foundry industry. Disclosed is a novel chemical reclaiming method for used sodium silicate sand. In the present invention, reclaiming is performed on used sand using a dual-component reagent composed of calcium oxide and distilled water, an emulsion composed of sucrose and calcium oxide, an aqueous calcium chloride solution, etc.; samples are prepared using reclaimed sand obtained by mixing the reagent with the used sand and sealing the mixture for 0-24 hours, and the sample preparation performances comprising the instant strength, final strength, and collapsibility, as well as the sodium carbonate content in the reclaimed sand, are tested; and upon the completion of the test, the performances of the reclaimed sand are compared with those of new sand and used sand. Considering the various performance indexes comprehensively, among the reclaiming methods according to the present invention, the reclaimed sand obtained by using (calcium oxide plus distilled water) to perform reclaiming for 12 hours has optimal performance indexes; compared with new sand, the instant strength is increased by 60%, and the final strength is increased by 154%; the collapsibility of the reclaimed sand is slightly worse than that of new sand and better than that of used sand; and the content of sodium carbonate is reduced by 1.38% compared with that of used sand. The reclaimed sand meets the requirements of use.
B22C 5/00 - Machines ou dispositifs spécialement conçus pour la préparation ou la manutention des matériaux à mouler, dans la mesure où ils sont spécialement adaptés à cette fin
B22C 1/02 - Compositions des matériaux réfractaires pour moules ou noyaux; Leur structure granulaire; Caractéristiques chimiques ou physiques de la mise en forme ou de la fabrication des moules caractérisées par des additions pour applications particulières, p.ex. indicateurs, addition pour faciliter la destruction du moule
10.
ION EXCHANGE-TYPE NANOFIBER SKELETON THREE-DIMENSIONAL SEPARATION MATERIAL HAVING CONTROLLABLE STRUCTURE, AND PREPARATION METHOD FOR SAME
Provided are an ion exchange-type nanofiber skeleton three-dimensional separation material having a controllable structure and a preparation method for the same. The preparation method comprises preparing nanofibers by means of a melt spinning process, pre-dispersing the nanofibers, preparing a suspension of pre-crosslinked nanofibers, and freeze-drying cross-linking, thereby obtaining a nanofiber skeleton three-dimensional separation material having structural stability, a large specific surface area, and a high adsorbing capacity. The microstructure of the nanofiber skeleton three-dimensional separation material is adjusted and controlled by adjusting and controlling the composition of the suspension of pre-crosslinked nanofibers and the manner of freezing. Adding different quantities of polyelectrolytes to the suspension of pre-crosslinked nanofibers enables the ion exchange-type nanofiber skeleton three-dimensional separation material to have various structures, high strength, and high adsorbing capacity. The entire preparation process has simple operations, is suitable for mass production, and provides superior product performance, thereby providing wide applicability in the fields of filtration, heat insulation, and adsorbing materials, and the like.
B01J 20/28 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtration; Absorbants ou adsorbants pour la chromatographie; Procédés pour leur préparation, régénération ou réactivation caractérisées par leur forme ou leurs propriétés physiques
B01J 20/30 - Procédés de préparation, de régénération ou de réactivation
C02F 1/28 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par absorption ou adsorption
C08J 9/28 - Mise en œuvre de substances macromoléculaires pour produire des matériaux ou objets poreux ou alvéolaires; Leur post-traitement par élimination d'une phase liquide d'un objet ou d'une composition macromoléculaire, p.ex. par séchage du coagulum
C08L 1/14 - Esters mixtes, p.ex. acétobutyrate de cellulose
11.
CENTRIFUGAL SPINNING APPARATUS AND PLANAR RECEIVING-TYPE CENTRIFUGAL SPINNING AUTOMATIC PRODUCTION DEVICE
Provided is a centrifugal spinning apparatus (1), comprising a machine frame (11), a spinning apparatus (13), a material feed apparatus (12) for supplying a spinning solution for the spinning apparatus (13), and a collection apparatus (14) used for collecting the centrifugally spun fiber ejected from the spinning apparatus (13). The collection apparatus (14) is horizontally arranged beneath the spinning apparatus (13) so as to cause the centrifugally spun fiber ejected from the spinning apparatus (13) to be attached to the surface of the collecting apparatus (14). The planar receiving-type centrifugal spinning automatic production device (100) using the centrifugal spinning apparatus (1) overcomes the existing centrifugal spinning based on ring collection and centrifugal spinning technology based on electrostatic collection, solving the problem of fabrication of a centrifugal spinning continuous filament and achieving batch production of centrifugal spinning, and can be applied to the composite of nanofibers or submicron fibers on the surface of wide non-woven fabrics or the production of wide nano or submicron non-woven fabrics; the entire production process is completed automatically, and requires no manual intervention.
D01D 5/18 - Formation des filaments, fils ou similaires au moyen de filières rotatives
D04H 1/724 - Non-tissés formés uniquement ou principalement de fibres coupées ou autres fibres similaires relativement courtes caractérisés par la méthode de formation des voiles ou couches, p.ex. par la réorientation des fibres les fibres étant disposées au hasard formation du non-tissé pendant la formation de la fibre p.ex. filage éclair
12.
Half-slide matched device and its application of ultra-smoothly reconstructing yarn hairy structure
A half-slide matched device and its application for ultra-smoothly reconstructing yarn hairy structure belong to a textile processing field. According to the half-slide matched device of the present invention, a vortex device static part and a vortex device moving part are matched. In practice, multiple devices are connected in tandem. When yarn moves, the parts of half-slide matched device are closed, for efficiently constraining and utilizing the vortex airflow. A directional jet tube one-directionally stretches hairiness on yarn surface to avoid hairiness random dispersion and entanglement, remove yarn surface impurities. Tandem-connected devices repeatedly superimpose and strengthen the reconstructed ultra-smooth yarn structure. The half-slide matched device can be opened when the yarn breaks, which facilitates splicing and maintenance. The half-slide matched device has a reasonable structure and is very convenient for wide application.
D02J 3/12 - Modification de surface par enlèvement des extrémités saillantes des fibres
D02J 7/00 - Nettoyage, p.ex. enlèvement des poussières, des fibres flottantes, des bouts carbonisés
D02G 1/02 - Production de fibres, filaments, filés ou fils, crêpés ou ondulés ou leur donnant de telles caractéristiques latentes par retordage, fixage de la torsion et détorsion, c. à d. en conférant une fausse torsion
D01H 4/02 - Métiers à filer à bout libre ou dispositions pour conférer une torsion à des fibres séparées à partir de rubans et se déplaçant d'une manière indépendante; Dispositifs de rattache à cet effet; Guipage de fils à âme continus avec des fibres par des techniques de filature à bout libre conférant une torsion par un fluide, p.ex. par un tourbillon d'air
D01H 1/115 - Filature par fausse torsion utilisant des moyens pneumatiques
D02J 1/08 - Enlacement de filaments constituants sans provoquer leur rupture, p.ex. à l'aide de jets d'air turbulents
13.
PREPARATION METHOD FOR INTELLIGENT MOSQUITO-REPELLING FABRIC
A preparation method for an intelligent mosquito-repelling fabric. A polymer which has intelligent response to human sweat is grafted on the surface of a base fabric; a lateral group of the polymer is linked with a mosquito repellent; the mosquito repellent is citionella oil; the base fabric is pure cotton fabric or cotton-containing blended fabric; a natural nontoxic material is adopted as the base fabric; the base fabric is bonded with fabric by means of functional finishing; and the fabric is adopted as close-fitting clothing, not only does not cause harm to the body but also can easily enable mosquitoes to be kept far away, so that the probability of disease infection is reduced and a safe and healthy living environment within a small scope can be created. The preparation method caters to the consumption requirements of people, conforms to the development tendency of functional textiles, and has broad market development prospects, practical significance and actual use value.
D06M 14/04 - Polymérisation par greffage de monomères, contenant des liaisons non saturées carbone-carbone, sur des fibres, fils, filés, tissus ou articles fibreux faits de ces matières sur des matières d'origine naturelle d'origine végétale, p.ex. cellulose ou ses dérivés
D06M 11/38 - Oxydes ou hydroxydes d'éléments des groupes 1 ou 11 de la classification périodique
D06M 13/00 - Traitement des fibres, fils, filés, tissus ou articles fibreux faits de ces matières, avec des composés organiques non macromoléculaires; Un tel traitement combiné avec un traitement mécanique
Disclosed is a preparation method for a thermochromic fabric with a hydrophobic surface, a functional fabric can be formed, and the fabric is obtained by means of after-finishing of a common polyester fabric. Ultrafine particles which are compounded by hydrophobic thermoplastic polymers and thermochromic nano-powder are prepared in advance, a microstructure similar to a lotus leaf structure is formed on the surface of the fabric after the ultrafine particles are loaded on the surface of the fabric, and thus the thermochromic fabric has excellent hydrophobicity. Moreover, the ultrafine particles contain the thermochromic nano-powder, and the color can be changed according to changes of the human skin temperature.
D06M 15/263 - Composés macromoléculaires obtenus par des réactions faisant intervenir uniquement des liaisons non saturées carbone-carbone d'acides carboxyliques non saturés; Leurs sels ou esters
D01F 6/92 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiques; Leur fabrication à partir de mélanges de produits de polycondensation comme constituant majeur avec d'autres polymères ou des composés de bas poids moléculaire de polyesters
D01F 1/10 - Autres agents modifiant les propriétés de ces filaments
A method to form yarn via film fiberizing spinning belongs to a textile technical field. A film cutting device is arranged behind each drafting system on a ring frame, whose cut resistance apron and cutting roller engage with each other to form a cutting zone to cut and fiberize the film to get belt-like multi-filaments. Then the multi-filament formed passes through the first, second and third drafting zones in sequence for drawing, in such a manner that the multi-filament molecular orientation and crystallization are improved. After being drafted, the multi-filaments are twisted into yarn by ring spinning, which provides a novel high-efficient and short-processing way of producing yarns of nano-micro fibers using films instead of conventional nano-spun fibers such as electro- and centrifugal spun fibers, thereby breaking restriction of “low bulk and low-speed production of nano-spun fibers” and integrating the film industry with the textile industry.
D01D 5/16 - Méthodes de filage par étirage utilisant des rouleaux, ou dispositifs mécaniques similaires, p.ex. dispositifs à doigts de friction
B26D 1/22 - Coupe d'une pièce caractérisée par la nature ou par le mouvement de l'élément coupant; Appareils ou machines à cet effet; Eléments coupants à cet effet comportant un élément qui ne suit pas le mouvement de la pièce ayant un élément coupant se déplaçant autour d'un axe avec un élément circulaire, p.ex. un disque coopérant avec un organe mobile, p.ex. avec un rouleau
16.
Ring composite spinning method based on film filamentization
A ring composite spinning method based on film filamentization is provided, which belongs to a textile technical field. According to the method, a film cutting drafting device is arranged above each drafting system on a ring spinning machine for cutting film material into ribbon-shaped multi-filaments to achieve the film filamentization, which changes a conventional formation of filament through linear spraying by spinneret orifices; then the multi-filaments formed pass through first and second filament drafting zones in sequence for drawing, so as to enhance and attenuate the multi-filaments. After in drawing, the multi-filaments are twisted with conventional staple fibers to form a composite yarn with high quality and functions, achieving one-step production of composite yarns of nano-micro fibers without online combination of nanofibers spinning and ring staple spinning, thereby breaking restriction of “low bulk and low-speed production of nano-spun fibers” and integrating film industry with textile industry.
Method and apparatus for producing ultra-smooth knitted fabric using hairy yarn belong to a technical field of textile. Yarn is false-twisted in a rotary holding form, for rotating the yarn stem on an ironing face. Meanwhile, a directional hairiness stretching device directionally ejects a steam flow towards the yarn, for reversely and orderly pre-wrapping hairiness on the rotating stem of the yarn, which avoids the yarn imperfection occurrence as the hairiness randomly or vertically wrapping onto the yarn stem. A vortex hair-wrapping device is used, so as to reversely wrap all the rest hairiness on the stem of the yarn, wherein a wrapping direction is opposite to a yarn moving direction for increasing difficulty of pulling out the wrapped hairiness during weft knitting, and increasing hair-wrapping tightness and fastness. The ultra-smooth yarn treatment apparatus is reasonably constructed and easily operated, which facilitates wide application.
D02G 1/00 - Production de fibres, filaments, filés ou fils, crêpés ou ondulés ou leur donnant de telles caractéristiques latentes
D06B 1/02 - Application de liquides, de gaz ou de vapeurs aux matières textiles en vue d'effectuer un traitement, p.ex. lavage, teinture, blanchiment, encollage ou imprégnation par pulvérisation ou projection
D04B 35/26 - Dispositifs pour le traitement préparatoire des fils par chauffage
D02G 1/04 - Dispositifs pour conférer une fausse torsion
D04B 15/38 - Dispositifs pour fournir, alimenter ou guider les fils aux aiguilles
18.
Method for accurately testing yarn hairiness through stretching one-directionally
A method for accurately testing yarn hairiness through stretching one-directionally, belonging to a technical field of textile testing, is provided. A suction pipe is provided on an external side of a laser and connected with an exhausting fan through a sleeve connector and a hose. An air inlet of the suction pipe generates a negative pressure under an effect of the exhausting fan to laterally suck the yarn running at a tension state among the laser, a projection receiver and the suction pipe. The hairiness on a yarn surface stretches straight one-directionally towards an airflow direction at a height of a center of the air inlet of the suction pipe. The one-directional straight stretched hairiness on the yarn surface is accurately projected to the projection receiver of a testing head at an equal length for accurately testing a hair amount and a hair length.
G01N 33/66 - Analyse chimique de matériau biologique, p.ex. de sang ou d'urine; Test par des méthodes faisant intervenir la formation de liaisons biospécifiques par ligands; Test immunologique faisant intervenir les sucres du sang, p.ex. le galactose
A method for ring-spinning with pneumatic guiding and capturing includes steps of: respectively fixing a pneumatic guiding and capturing apparatus in front of each drawing system of a ring frame; twisting the ribbon-like strand outputted through a front roller nip to form a spinning strand, moving the spinning strand into a holder groove of a capturing holder; guiding ribbon-like strand edge fibers to closely contact with a spinning strand main body by negative pressure airflow in the holder groove; before the ribbon-like strand edge fibers enter an in-take opening, cohering the edge fibers with the spinning strand for being partly captured by the spinning strand stem; other un-captured edge fibers become spinning strand hairiness, which is then stretched and tightly wrapped onto the spinning strand stem by a negative pressure; the spinning strand is outputted from the holder groove outlet to get a high qualified spun yarn.
The present invention provides a two-dimensional run-length limited codec with protection characters and a method for using same. The codec comprises an encoder and a decoder. The encoder comprises a data buffer and grouping module, a two-dimensional code word generating module, a two-dimensional character unit page constructing module, a two-dimensional code word write array module, and a protection character filling module. The five modules are sequentially connected, and send output through the protection character filling module to a two-dimensional data recording device. The decoder comprises a two-dimensional data buffer module, a two-dimensional character unit page constructing module, a one-dimensional data character decoding module, and a one-dimensional data stream assembly module. The five modules are sequentially connected, and send output through the one-dimensional data stream assembly module. The encoding/decoding method and device of the present invention can solve the technical problem that a two-dimensional data array composed of "0" and "1" satisfies two-dimensional (1,3) RLL constrained by (1,3) RLL in two directions.
brevets
