摘要:
A weaving machine for producing a woven fabric has a shedding device to form a loom shed of warp material, a weft insertion device for inserting a preferably tape-shaped or band-shaped weft material into the loom shed, a drawing-off device for drawing off the finished fabric in a drawing-off direction, fabric movement device for moving the fabric back and forth in the warp direction to bring the last inserted weft material into contact with the binding point or fabric edge. A shed limiter device limits the opening of the loom shed from above and below the warp, and is movable back and forth in the warp direction. The shed limiter device only loosely bounds the fabric and essentially without actively clamping or pinching or contacting the fabric and/or the last inserted weft material, at least while moving in the direction opposite the drawing-off direction.
摘要:
A variety of textile materials comprising tapes oriented in two oblique orientations relative to the textile's length and width directions, called OFT for Oblique Fibre Textiles, are disclosed. Such OFTs are provided with secondary structural integrity/stability, in addition to primary structural integrity/stability, for improved resistance to formation of openings/gaps. OFTs comprising tapes, particularly Spread Fibre and Highly Drawn Polymeric types, are needed in a number of applications such as ballistic mitigation, composite materials, safety products etc. because they provide improved performance, material properties/functions and aesthetics. Such OFTs can be used either independently or in combination with other textile materials. Different types of OFTs are producible by a novel OFT forming process which is technically unlike weaving and braiding processes.
摘要:
Novel woven materials, producible by a new weaving method, are described that comprise single or doubled warps and wefts in the form of tapes that are preferably partially stabilized type of fibrous tape. These fibres are caused to occur in a non-linear arrangement during the weaving process. The non-linear fibres can be subsequently straightened by pulling the tape longitudinally. The doubled warps and wefts comprise disconnected tapes. Such separateness of constituent tapes of doubled warp and weft tapes enables them to be slid/slipped relative to each other by pulling longitudinally and laterally without causing any alteration in the woven structure. These novel fabrics solve the problem of uneven fibre distribution and orientation arising from crumples/wrinkles due to compression and stretches due to extension, at the inner and outer sides respectively, when tape-woven fabrics are curved into shapes. Further, by using doubled warps and wefts fabrics with relatively flat/planar sections and thicker/raised wide rib sections can be also created that resemble a bit like a profiled material in its cross-section. Other fabrics like those comprising slant/oblique weft tapes, shaped warp and weft tapes, formed shape within its body are also producible.
摘要:
The heddle according to the invention, provided in particular for band-shaped warp threads, comprises two bands (5, 6) that extend in vertical direction during use, are arranged at a distance parallel to each other and hold two thread support elements (16, 17) disposed between them. The thread support elements (16, 17) together with the respective flat segments of the bands (5, 6) between them jointly form a flat thread eyelet (18) that is oriented transverse to the warp thread and the longitudinal direction (7) of the heddle. The bands (5, 6) preferably extend with undiminished width up to the heddle support rails (2, 3) and are provided with end eyelets (10, 11, 12, 13) for positioning them on the support rails.
摘要:
A novel method of weaving is described wherein warp and weft are supplied in the form of tapes, and not yarns. In at least one embodiment, the method, which is preferably carried out in vertical format, essentially includes feeding positively flat tensionless warp for shedding and taking-up; selecting, feeding positively and inserting weft tapes of different widths and thickness by gripping in its fore end in flat condition; depositing inserted weft at fabric-fell in a flat condition without beating-up; and taking-up the woven material that comprises either same or different widths of flat wefts. The warps and wefts, preferably of partially stabilized type of fibrous tapes, can be overfed in a tensionless, positive and controlled manner when required to make the fibres of constituent fibrous tapes occur non-linearly in the form of wave/texture during weaving. Extra warps and wefts can be also fed in tandem whereby the warps and wefts become composed of two or more unconnected, mutually slipping, flat tapes in a stacked arrangement. These doubled warps and wefts function effectively as a unit warp and weft during weaving and in the fabric. In at least one embodiment, the method also makes possible to produce other materials such as those with slant weft tapes in relation to warp, having a shape within the body of the fabric and warp and weft tapes of shaped edges. A variety of fibrous and non-fibrous materials are equally well processed.
摘要:
A tetraxial fabric is obtained using warp yarns, weft yarns, first bias yarns and second bias yarns. The warp yarns alternate to the weft yarns and the first bias yarns are overlaid by the second bias yarns, in addition the first bias yarns cross the second bias yarns at the crossover points of the warp yarns with the weft yarns. The invention includes also a machine to manufacture the said tetraxial fabric.
摘要:
The present invention concerns weaving. In particular, it is a woven material produced using tape-like warp and tape-like weft through the employment of a rotary type shedding means which also functions as a direct specific-weave patterning means and a pick guiding means. The material according to the invention has a constructional constitution of at least some of the warp (23) and weft (25) that is non-homogeneous. The invention also relates to a weaving device for producing woven material with tape-like warp and weft, comprising rotary means (1), which is capable of producing more than one fabric simultaneously.
摘要:
This invention provides a reinforcing woven fabric using as weaving threads flat and substantially nontwisted multifilaments of reinforcing fiber having less than 0.5 wt. % of sizing agent provided thereto and a binding property of 400-800 mm in hook drop value, and a method and an apparatus for manufacturing a reinforcing woven fabric by weaving the multifilaments of reinforcing fiber as warps and wefts. A reinforcing woven fabric having a small thickness and an extremely high covering factor and capable of indicating a high strength can be obtained at a low cost as a substrate for reinforcing composite materials.
摘要:
A method and apparatus for supplying twist free flat weft containing a plurality of carbon fibers to a plurality of warps in a rapier weaving loom wherein the weft is transversely removed from a bobbin by draw-off rollers and intermittently supplied to the rapier. An elastic force is applied to the length of weft accumulated between the rapier and the bobbin to take up any slack and obviate its twisting. By this technique a carbon fiber fabric is woven with flat wefts which ensure a high fabric strength since crimped yarns with non uniform densities are avoided as well as a non uniform fabric thickness caused by irregular yarn thicknesses.
摘要:
Formable twistless woven precursor fabrics, especially in satin or basket weave, made from warp and weft flat tape of fiber reinforced thermoplastics on a power driven loom. The weft tape is supplied in a twistless manner from a rotatable package that is driven in synchronism with the feeding mechanism and a finite tension on the tape is maintained so that a line drawn parallel to the surface of and perpendicular to the longitudinal axis of each of the warp and weft tapes is in the plane of the fabric throughout the fabric. The warp and weft tapes have edges that abut substantially throughout the fabric.