4349 results about "Weft yarn" patented technology

A vapor permeable article includes a porous backing substrate and an open fabric applied to one surface of the backing substrate. The open fabric has a greater porosity than that of the backing substrate. The open fabric may be a woven fabric comprising warp (MD) yarns and weft (CD) yarns, and the warp yarns may be of a lower denier than the weft yarns, so as to facilitate hand-tear of the assembled article. The open fabric is coated with an adhesive in such a manner that the open fabric remains porous and vapor permeable. The backing substrate can be a woven, knit or non-woven fabric, or a porous film, such as an apertured plastic film.

The composite turbomachine blade of the present invention comprises a preform made of yarns or fibers woven in three dimensions and a binder maintaining the relative disposition between the yarns of the preform. Said preform is made up of warp yarns and of weft yarns, the direction of the warp yarns forming the longitudinal direction of the preform. In characteristic manner, said preform comprises at least a first portion made using a first weave forming the airfoil of the blade, and a second portion made using a second weave forming the root of the blade, and the first and second portions are united by a transition zone in which the first weave is progressively modified to end up with the second weave, thereby obtaining a reduction at least in the thickness of the blade between the second portion and the first portion. The invention is applicable to making a fan blade for a turbojet.

Fabric and reinforcements are provided by this invention which, in a first embodiment, include a plurality of warp yarns having a first twist (turns/inch) and a plurality of weft yarns having a second twist which is greater than the first twist. A coating is applied over a substantial portion of the warp and weft yarns after they are assembled or laid together, so as to produce a weight distribution ratio of less than about 2.0:1, based upon the weight of the resinous coating of the weft yarns over the weight of the resinous coating on the warp yarns. This can be achieved, in substantial part, due to the difference in the twist ratios of the warp and weft yarns, which difference permits a more uniform coating to be applied. Further embodiments of this invention include a cementitious board and methods of making a coated fabric and cementitious board.

A textile fabric, sleeve formed therefrom, and methods of construction thereof are provided. The fabric forms an elongate wall constructed from lengthwise extending warp yarns woven with widthwise extending weft yarns. At least some of the warp yarns are electrically conductive and have a first diameter. The weft yarns have a second diameter that is at least 25 percent less than the first diameter of the warp yarns. As such, the conductive warp yarns are brought into closer proximity with one another than if the weft yarns were the same diameter as the warp yarns. Accordingly, the ability of the fabric and sleeve formed therewith to provide shielding protection against EMI is enhanced.

The invention provides a high-grade flax fabric weaving method based on crystallized and modified flax yarns. The method comprises the following steps: in the material preparing stage, woven flax spun yarns are subjected to relaxation and winding, so as to form relaxed yarns on cones; the relaxed yarns on cones are subjected to crystallization and modification treatment; the crystallized and modified relaxed yarns on cones are simultaneously subjected to winding, electronic yarn clearing and waxing, so that weaving yarns on cones are obtained; the weaving yarns on cones are subjected to warping according to the quantity of warp yarns; in the weaving stage, flax grey cloth is woven by taking the weaving yarns on cones as weft yarns, the warp yarns after warping as warp yarns, and drawing weft and warp yarns in an air jet loom; in the dyeing stage, the woven flax grey cloth is subjected to hot dyeing or cold dyeing; in the after finishing stage, the dyed flax grey cloth is rinsed, dried, finalized, preshrunk, wound and packaged to form the high-grade flax fabric. According to the high-grade flax fabric weaving method, the bottleneck of wearability of traditional flax fabric is solved, the flax fabric is enabled to obtain the sense of cotton, the production efficiency is improved, the production cost is reduced, and the energy conservation and emission reduction in the production process are realized.

A warp-stitched multilayer papermaker's fabric has a set of bottom warp yarns, a set of bottom weft yarns, a set of top weft yarns and a set of warp stitching yarn pairs. The bottom warp yarns are interwoven with the bottom weft yarns. The stitching warp yarns interweave with both the bottom weft yarns and the top weft yarns, and are woven such that at locations where the first of the stitching warp yarns in a pair weaves in the top fabric layer, the second stitching warp yarn in the pair drops below the top fabric layer to interweave with one or more bottom weft yarns to bind the top fabric layer and the bottom fabric layer together. The first stitching warp yarn of the stitching warp yarn pair may weave on a first side of one of the bottom warp yarns while the second stitching warp yarn of each stitching yarn pair may weave on the other side of that bottom warp yarn. Each stitching yarn pair may be substantially stacked above a bottom warp yarn. The fabric may further include a set of top warp yarns that interweave with the top weft yarns in the top fabric layer. The set of top warp yarns may be woven from a first warp beam, the set of bottom warp yarns may be woven from a second warp beam and the set of stitching warp yarns may be woven from a third warp beam.

An article including a woven fabric comprising warp yarns and weft yarns, wherein at least one of either the warp yarns or the weft yarns includes: (a) a corespun elastic base yarn having a denier and including staple fiber and an elastic fiber core; and (b) a separate control yarn selected from the group consisting of a single filament yarn, a multiple filament yarn, a composite yarn, and combinations thereof; having a denier greater than zero to about 0.8 times the denier of the corespun elastic base yarn; wherein the woven fabric includes (1) a ratio of corespun base yarn ends to control yarn ends of up to about 6:1; or (2) a ratio of corespun base yarn picks to control yarn picks of up to about 6:1; or (3) both a ratio of corespun base yarn ends to control yarn ends of up to about 6:1; and a ratio of corespun base yarn picks to control yarn picks of up to about 6:1.

A curved reinforcing fiber substrate having a curved planar shape comprising a plurality of reinforcing fiber yarns arranged parallel to a direction along a circumferential direction of the curved shape, and auxiliary weft yarns arranged in directions crossing the plurality of reinforcing fiber yarns each arranged in one direction of the circumferential direction.

The invention provides a flexible resistance type pressure sensor with a woven structure, which consists of conductive fibers. The pressure sensor is characterized in that the conductive fibers are mutually interwoven into a woven fabric, all warp yarns of the woven fabric are connected with each other, all weft yarns of the woven fabric are connected with each other, and an integral resistor between all the warp yarns and all the weft yarns changes with the pressure on the woven fabric. The technical proposal of the flexible resistance type pressure sensor provides application of the flexible resistance type pressure sensor with the woven structure, which is characterized in that the flexible resistance type pressure sensor with the woven structure is applied to sleeping posture detection costume. The pressure sensor has the characteristics of flexibility, foldability and launderability, and is suitable for the detection of wearable personal physiological information and state.

A flat sheet of woven material includes warp yarns and weft yarns interlaced at substantially right angles to each other. A graft material is cut from the flat sheet of woven material such that the graft material includes a graft material longitudinal axis and the warp yarns are disposed at an angle relative to the graft material longitudinal axis. The warp yarns and weft yarns are not parallel to or perpendicular to the graft material longitudinal axis. The graft material is formed into the shape of an endoluminal prosthesis, such as by rolling opposing edges towards each other and securing the opposing edges to each other. The endoluminal prosthesis thus includes warp yarns disposed at an angle relative to the prosthesis longitudinal axis.

A composite papermaking fabric having an upper support fabric including upper warp and weft yarns and a lower contact fabric including lower warp and weft yarns. The upper fabric is woven in a first weave pattern which forms a support surface and the lower fabric is woven in a broken twill weave pattern which forms the contact surface. The composite fabric includes paired binder yarns which weave in alternating sequences with the upper and lower fabrics binding them together. The broken twill weave pattern provides plural floats of cross-machine direction yarns passing outwardly of a plurality of adjacent lower warp yarns forming a plurality of adjacent cross-machine direction floats. Certain of the paired floats comprise a lower weft yarn and a binder yarn while others may comprise two lower weft yarns. The lower weft yarn floats are positioned to shield and protect the binder yarn floats along their entire length.

The present invention relates to textiles for photonic and electronic applications, particularly to multilayer textiles made of electrically conductive yarns for driving electrical components such as light emitting diodes connected to the textile. The light emitting diodes may be arranged in the form of an array in order to realize a flexible and foldable display. In the textile according to the present invention, insulating weft yarns are interwoven in a multilayer wrap (105) such that the electrically warp yarns (111) are partially covered by the insulating weft yarns (141), thereby preventing from short-circuit between electrically conductive yarns of the textile. In particular, the structure of the textile according to the present invention may be satin/sateen weave structure.

The invention relates to a manufacture method for three-dimensional reinforced warp knitted spaced fabric, and the warp knitted spaced fabric is produced on a modified double tricot raschel machine with full weft insertion devices. A main body of adopted raw materials is tows of high-performance fiber such as fiber glass, carbon fiber, aramid fiber, ultra high modulus polyethylene and the like. The manufacture method comprises the following steps: introducing high-performance fiber inserted weft yarns on the whole width of the machine in the X-axis direction through two weft insertion devices arranged on the front and the back of the machine; introducing high-performance fiber inserted warp yarns in the Y direction through guide bars; binding and fixing the inserted warp yarns and the inserted weft yarns through chain stitch or tricot stitch of common or high strength synthetic fiber filament yarns; adopting the high-performance fiber on upper and lower surface layer connecting yarns, ensuring the distance of 5 to 6 cm between the two surface layers, and providing reinforcing fiber in the Z-axis direction; and designing raw materials, densities, arrangement modes and interlayer thickness of the inserted warp and weft yarns of the surface layers and interlayer connecting yarns according to the requirements to form three-dimensional mesh structures with different mesh sizes and specifications. The manufacture method is characterized in that the high-performance fiber is extended and arranged in three-dimensional directions so as to overcome the defects and disadvantages of the prior spaced fabric taken as a reinforced material, and the manufacture method provides an ideal three-dimensional reinforced fabric for production of composite boards with good tensile, bending, shearing and compression properties and shock resistance.

A papermaker's fabric, usable in the forming section of a paper machine, having a top layer and a bottom layer of cross-machine direction (CD) wefts. The top (forming) layer and bottom (wear side) layer are woven together to form a multi-layer fabric. CD packing yarns are inserted between adjacent wear side weft yarns. The packing yarns reduce the void volume on the wear side of the cloth without significantly disrupting the air permeability or increasing the caliper of the fabric. The placement of the packing yarns also adds to the CD stability and seam strength of the fabric and reduces the lateral movement of the wear side weft yarns.

A multi-component fiber blended facing material is disclosed, whose weight proportion of spinning raw material is (the chaine is same with the weft yarn) 11-20% of tencel, 8-12% of ramee, 8-12% of bamboo fibre, 60-65% of terylene short fiber and 0.5-0.7% of conductive fibre. The invention implementing reasonable collocation and assembly of tencel, terylene, bamboo fibre, ramee and conductive fibre, which not only useds the large brute force and sticking dynam characteristic of terylene, but also full utilizes the superior characteristic and favorable wear behavior of tencel, bamboo fibre and ramee, thereby implementing ascendency complementary and inferior position elimination of various fibres, and meanwhile the conductive fibre has better and longer electrostatic resistance effect in the fibre blended yarns. The facing material has superior characteristics of moisture absorption, ventilating, electrostatic resistance, sticking, sliding, embonpoint hand feeling, good drapability, flokkit and pilling resistance, good model keeping performance, antimicrobial, etc. The invention has reasonable technique, resolve difficult problem of spinning and dyeing, and establish hardness foundation for the amenity and high-grade of the chemical fabrics facing material.

The invention discloses weft-filled decorative fabrics in a three-layer structure and a production process thereof. One of plain weave or twill weave is adopted as basic weave in a surface layer and aliner layer; warp yarns and weft yarns on the surface layer and the liner layer are woven into two-layer fabrics; 3/3 warp overlapped plain weave single-layer grid embedded strip yarns and 2/2 weft overlapped plain weave single-layer grid embedded strip yarns are respectively embedded and woven in an alternative arrangement mode on the surface layer and the liner layer in the warp direction and the weft direction; weft suspended filling yarns are woven between the surface layer texture of and the liner layer texture; the number R of full-texture circulating warp yarns of the whole fabrics satisfies an equation: R=10-16; and the decorative fabrics in the two-layer texture weft-filled three-layer structure are woven. The whole fabrics integrally have three-dimensional grid effect in a two-layer texture triple structure; under the supporting action of filled wefts in the weft direction, two-layer bag-shaped grids have permanent obvious swelling effect and form an air layer with a thickness of 1.2-1.8 mm in the fabrics, and the air layer has favorable functions of heat insulation, heat maintenance and sound shielding. Accordingly, the novel household decorative fabrics are ideal.

A polyester plain weave fabric construction wherein said fabric has a basis weight of between 150 to 300 g/m² with tongue tear strength equal to or better than nylon fabrics of the same construction and weight. The present invention relates to both coated and uncoated polyester filament woven fabric. The uncoated fabric is useful for industrial purposes wherein the fabric has a warp tongue tear resistance of at least 0.75 N/g/m^2, when the fabric basis weight is between 150 to 300 g/m² The preferred uncoated polyester filament yarn has a linear density of between about 200 to about 800 dtex, a tenacity of at least 65 cN/tex, a tensile index of at least 350. The fabrics can be coated with chloroprene, neoprene, polyurethane, silicone or other organic coatings to reduce air permeability. The fabric of the present invention may also be constructed with the warp and/or filling yarn having an aspect ratio between 1.2 and 6.

The invention discloses a prediction method for the fatigue life of a complex braided structure ceramic-based composite material.The prediction method comprises the steps that the fatigue performance under a cycle number and the fiber failure percentage under the cycle number are calculated; the relationship between the fiber failure percentage and a fiber failure critical value is determined; the unit-cell scale fatigue performance is calculated to obtain the maximum strain epsilon'max under the cycle; the relationship between the maximum strain epsilon'max and the maximum failure strain epsilonmax is determined; a fatigue life curve of the material is obtained.According to the prediction method, a microscale model taking account of fibers, a base body and pores and a unit-cell multi-scale prediction model taking account of warp yarn, weft yarn and holes are presented and overcome the defects that a micromechanical method cannot be directly applied to the braded material with the complex structure, and a macroscopic phenomenological method depends on a large quantity of tests and only can achieve prediction on the fatigue life of a special material, macromechanics and micromechanics are combined, a micromechanical stress strain field of a complex braided structure is supplied, and the application range of the material is widened while the fatigue life curve of the material is precisely predicted.

A pull tape for facilitating positioning of elongated items within a protective sleeve is disclosed. The pull tape is woven of filamentary members preferably using a twill or satin weave that allows floats to form on the surface of the tape that reduce friction between the tape and the sleeve when the tape is drawn through the sleeve. Preferably, the tape is formed of multifilament warp and weft yarns woven in a plain weave with additional monofilament yarns arranged in the warp direction and woven in a twill or satin weave to form the floats in the warp direction. Additional embodiments include tapes having warp members entirely of monofilaments, as well as both warp and weft members being entirely of monofilaments.

The invention relates to a forming method of a 2.5-dimensional weaving revolving solid composite material, which belongs to the technical field of manufacturing formation and comprises the following processes of: (1) weaving by using at least four simple weaving square machines by a radioactive yarn adding method; (2) weaving fabric with changed cross section from a smaller end to a larger end and evenly hanging warp yarns in the circumferential direction of weft yarns according to different changes of mould diameters; (3) vertically putting the revolving solid fabric into a mould; (4) injecting glue into multiple channels from bottom to top and monitoring glue injecting pressure in real time for ensuring stable glue injecting loading; (5) judging that the glue is completely injected by glue outlets which is also an observation port; (6) closing the last glue outlet and maintaining the pressure of a mould cavity; and (7) curing and treating. The method and corresponding forming equipment have low cost, simple operation, quick compounding, even injection of glue liquid, adjustable pressure, diversity of resin systems and good product quality.

The invention relates to the peak enveloping three dimensional textiles and the producing process. The fabric possesses the crest and the body which are plaited on time by the longitude yarn and the abb, it is the three dimensional whole fabric without the layer. The said plaiting method plaits the crest of the peak enveloping three dimensional textile: the obligate longitude yarn is fixed in advance according to the fabric frame needing, the obligate length abb are inducted into the said obligate length longitude yarn according to the fabric frame needing using the beeline citing latitude method, they are interlaced, the said obligate length abb is installed in advance, the cycle is performed according to the process to finish the plaiting of the fabric crest; the without interlacing part of the said obligate length longitude yarn and the abb on the fabric crest can be used to be the yarn of the body of the peak enveloping three dimensional textile, the plaiting of the body can be performed using the method of machine plaiting or knitting, so the fabric whole plaiting can be finished.

A machine side layer weave design for use in woven composite fabrics, particularly papermakers forming fabrics having differing weave designs on each planar surface is provided. The composite fabric is comprised of two sets of weft yarns interwoven with at least one system of warp yarns. A first set of weft yarns is interwoven with the at least one system of warp yarns to form the paper side layer, while the second set of weft yarns is interwoven with the at least one system of warp yarns to form the machine side layer. In each repeat of the machine side layer weave design, at least 50% of the warp yarns pass under two adjacent weft yarns on the machine side of the fabric to form a double warp knuckle, and each double warp knuckle is bounded on either side by a single warp knuckle formed on each of the first and second weft passed under by the double warp knuckle. Further, in each repeat of the weave, each weft yarn is passed under by two adjacent warp yarns to form two adjacent single warp knuckles. In one embodiment, all of the warp yarns form double warp knuckles; in an alternate embodiment, 50% of the warp yarns form double warp knuckles. The knuckles are evenly distributed across the machine side surface so as to minimize any propensity for guiding. The machine side layer weave design of the invention is suitable for use in any composite fabric and is effective in minimizing or eliminating fabric edge curl, a problem common in fabrics of this type.

A polyester woven sheeting material including a set of 100% polyester warp yarns and a set of 100% polyester weft yarns, wherein the warp and weft yarns are interlaced to form the sheeting material. The warp and weft yarns comprise of air-jet spun polyester fibers that wisk moisture away from an individual laying on the woven sheeting material and, therefore, provide a quick-drying, breathable woven sheeting material which simulates the absorbency characteristics of cotton yarns. The set of polyester warp yarns and the set of polyester weft yarns may be interlaced to form a ground fabric, where a set of polyester pile yarns may then be interlaced with the ground fabric so that the pile yarns extend outwardly (e.g., forming a plurality of loops) on the front side, back side, or both sides of the ground fabric.

The invention discloses a normal reinforced 2.5D fabric and a weaving method thereof. The fabric comprises a warp yarn system and a weft yarn system, wherein the warp yarn system and the weft yarn system are interwoven to form a layer-layer-corner interlocking structure. The fabric is characterized by also comprising a normal yarn system, wherein the normal yarn system is perpendicular to the interwoven warp yarn system and weft yarn system, penetrates through the thickness of the fabric, and is held by the adjacent warp yarn and weft yarn, thereby forming the normal reinforced 2.5D fabric. The fabric weaving method is realized in a way that: a technique normal yarn system is added based on the prior weaving method of the 2.5D fabric; and the normal yarn is perpendicularly led between every two adjacent warp yarn rows by a yarn leading device in the weft yarn direction in a certain leading way, penetrates through the thickness direction of the fabric and is held by the adjacent weft yarn rows, thereby weaving the 2.5D fabric. The method comprises the following steps: arranging yarn initially, making a shedding motion, leading in the weft yarn, leading in the normal yarn, making a shedding motion for the second time, leading in the weft yarn for the second time, and repeating the last three steps, thereby obtaining the normal reinforced 2.5D fabric.

The invention relates to flame-retardant and fireproof fabric, and a processing technology and textile thereof. Warp yarns adopt wool tops formed by blending flame-retardant acrylic, flame viscose, fine-denier polyester and aramid fiber 1313 fiber; weft yarns adopt wool tops formed by blending alginate fiber, polyphenylene sulfide, polysulfonamide and phenolic fiber; then the warp yarns and the weft yarns form the flame-retardant and fireproof fabric through steps of dyeing, fixation, rinsing, sizing, weaving, desizing, rinsing, drying, baking, full decatizing and the like. The fabric has the characteristics of simple processing technology, good flame-retardant effect and the like, and can be applied to apparel, home textile, sports goods, medical care and fireproof fabric.

The invention discloses a three-layer fabric and a tatting technique thereof. Side openings at both sides of the cloth width of the three-layer fabric are tatted into a single layer, a surface layer and a liner layer comprise foundation tissues and jacquard or pattern tissues, the foundation tissue of the surface layer is tatted by surface warp and surface weft, the jacquard or pattern tissue is tatted by liner warp and liner weft, the foundation tissue of the liner layer is tatted by the liner warp and the liner weft, the jacquard or pattern tissue is tatted by the surface warp and the surface weft, and a middle layer comprises a layer of middle weft and is clamped and fixed by a binding tissue in a complete tissue; at the junction of the foundation tissue and the jacquard or pattern tissue, surface-liner connection and liner-surface connection are carried out to form the binding tissue; the tatting technique comprises seven procedures of fabric design, warp beaming, loom tacking, tatting, desizing, softening and water washing, adopts a set of surface weft yarn system, a set of middle weft yarn system, a set of liner weft yarn system and two sets of warp yarn systems for tatting,and the tatting sequence is the surface firstly, the middle secondly and the liner thirdly or is reverse; and the invention solves the problem that the prior art is difficult to tatt a fabric which can be directly used for producing an air-conditioning bedding and has the required thickness, and has obvious use value and economic value.

A multi-layer tissue forming fabric constructed so that the top forming surface has topographical differences measured as a plane difference between at least two top weft yarns. The plane difference—the difference in height between the two weft yarns—must be greater than zero. Using at least two different diameter, size, or shape weft yarns positioned at the same contour in the forming surface creates this plane difference and defines pocket areas in the forming surface of the tissue forming fabric. The pocket areas act to generate bulk, cross directional tensile, absorbency, and softness in a formed sheet of tissue, napkin, or towel paper.

A corrosion-resistant lath is provided for use in exterior finishing systems, such as stucco systems and exterior insulation and finish systems (“EIFS”). The lath includes in a first embodiment an open, woven fabric comprising weft and warp yarns containing non-metallic fibers, such as glass fibers. A portion of the weft yarns are undulated, resulting in an increased thickness for the fabric. The fabric is coated with a polymeric resin for substantially binding the weft yarns in the undulated condition. This invention also includes methods for making an exterior finish system and building wall including an exterior finish system using such a lath.

A woven sleeve, sleeve assembly and methods of construction thereof are provided. The sleeve has a flexible, abrasion resistant, circumferentially closed and continuous elongate wall extending lengthwise along a central axis between opposite ends. The wall is woven with warp yarns extending generally parallel to the central axis and at least one heat-shrinkable weft yarn extending generally transversely to the warp yarns. The warp yarns provide the sleeve with coverage, abrasion resistance and flexibility and the weft yarn provides the ability to shrink the wall about an elongate member being protected within a cavity of the sleeve, as well as providing enhanced crush strength and abrasion resistance. At least one of the warp yarns and/or weft yarn includes at least one low melt, heat-fusible yarn served therewith to enhance resistance to end-fray during a cutting operation.

In the present invention, there is provided a laminated film that is excellent in terms of mechanical strength and low coefficient of thermal expansion. According to the present invention, there is provided a laminated film, which is characterized in that it comprises a resin sheet having a cured resin layer containing glass cloth and a polarizing plate laminated on the resin sheet, in which any one of weft yarn and warp yarn of the glass cloth is oriented at an angle of 5 degrees or less relative to an absorption axis of the polarizing plate.