Abstract:
Three-dimensional woven preforms are curved and have continuous fibers in the direction of curvature and wherein the base of the preforms is curved with the warp fibers continuous across the length of the preform and some of the warp fibers are longer than other warp fibers.
Abstract:
Disclosed is an apparatus and method for forming three-dimensional woven preforms that can be curved and have continuous fibers in the direction of curvature. Also disclosed are woven preforms formed thereby.
Abstract:
An apparatus for drawing-off a web-shaped product from a weaving machine in a drawing-off direction includes: at least one clamp carrier having clamps for the web-shaped product; a carrier frame apparatus on which the clamp carrier is guided; a drive arrangement by which the clamp carrier is drivable back and forth in a motion range; and a support system for the web-shaped product. The support system is arranged in an area between the apparatus side facing toward the weaving machine and the clamp carrier, within the carrier frame apparatus, in such a manner so that a sagging of the web-shaped product in this area is avoided or limited by the support system.
Abstract:
The disclosure relates to a shape-woven preform which has an omega-shaped cross-section including a core and a sole. At least one part of the core and at least one part of the sole have weft yarns in common with one another.
Abstract:
Various examples are provided for non-stop tying-in process for weaving of textiles. In one example, a method for non-stop tying-in of loom warps during operation of a loom includes providing free ends of a replacement warp sheet and a warp sheet tail to the tying-in machine during the operation of the loom, where the warp sheet tail is provided through a warp accumulator; accumulating the warp sheet tail in the warp accumulator during tying-in of the free ends; supplying at least a portion of the warp sheet tail accumulated by the warp accumulator to the loom after being released from a warp beam; removing the tied-in warp sheet tail and replacement warp sheet from the warp accumulator; and supplying the replacement warp sheet to the loom during its operation.
Abstract:
A method is described which comprises a method for the production of a monofilament from a mixture of a melt-spinnable, filament-forming polymer and a modifying additional polymer, characterised in that a mixture of one or more melt-spinnable, filament-forming polymers and 0.001 to 10% by weight of a perfluorinated polyether is spun to form monofilaments.The monofilaments are particularly well suited for woven fabrics which are used in paper machine clothings, conveyor belts, filtration screens and screens for silkscreen printing.
Abstract:
A weaving loom is equipped with a trolley or several trolleys, each of which carries a cloth winding mandrel. A single drive which is either separate from the main loom drive or which derives its power from the main loom drive is provided to drive one or more fabric winding mandrels in series. The trolley with its mandrel or a plurality of trolleys take up the space conventionally taken up by a cloth beam, whereby substantial floor space on the factory floor is saved.
Abstract:
A unitary light box for inspecting cloth manufactured on a loom (10) is provided with first and second viewing areas (B) and (C), respectively, wherein cloth (F) having a vertical run is guided over an intermediate curved surface (D) for inspection providing several angles of sight to the operator from the same vantage point so as to locate defects not ordinarily visible during conventional head on observation.
Abstract:
Rocket exit cones, rocket motors, curved objects, and the like, are produced by weaving a fabric onto a non linear form and rotating the form to wind up the fabric as it is being woven. Compensation between the linear, flat shape of the fabric and a non linear shape of the wind up form is obtained by conforming the shape of the reed portion of the loom to the shape of the form, and by providing a constant and/or variable spacing between the reed elements. A uniformly wrapped, non linear shape is is produced by the process.Following wrapping, the fabric shape is impregnated with resin, and cured to a carbonized and/or graphitized state. Finally, the cured shape may be machined to its desired size and contour, having uniform properties.
Abstract:
An oscillating guide roll for use in winding cloth onto a take-up roll distributes the cloth so that the edge or selvage portions which are thickened do not remain in register. A stationary non-rotating shaft has a hollow guide roll mounted thereon. The guide roll both rotates about the shaft, and oscillates relative the longitudinal axis of the shaft. Apparatus entirely enclosed within the hollow guide roll is mounted therein for rotation relative the stationary non-rotating shaft, and actuated solely by rotation of the guide roll about such shaft. Rotation of the guide roll is transmitted to such apparatus at a rotational speed different from that of the guide roll. Thus, registry of the thickened edge portions is avoided without requiring actuation of the apparatus other than by rotation of the guide roll.