Patent GB-1247045-A (GB)
Title: Improvements relating to non-woven fabrics
IPC: D04H3/02
Filed: 1968-10-22
Abstract: 1,247,045. Laminates. UNIROYAL Inc. 22 Oct., 1968 [27 Oct., 1967 (2)], No. 49955/68. Heading B5N. [Also in Divisions B3, D1 and H5] An elastic non-woven fabric comprises two groups of coil strand reaches, the reaches of each group crossing those of the other and being laid into and entangled therewith from one side only, as shown. The coils can be the same size and the reaches can be compacted together to form a fabric having a thickness of the cross-sectional dimensions of the coils (Fig. 2.) One or both of the groups of strand reaches may be stretched. The coils can be circular, oval or square cross-section. The strand reaches can be at right angles to each other. Each group of coil reaches can be a continuous serpentine coil. The coil strand reaches can contain mixtures strands of different materials or different reaches can be made of different materials. The coils can be made of strands of mono-filaments or multifilaments of glass, metal wire, e.g. " Nichrome," " Monel " (Trade Marks), nickel steel, German silver, carbon steel, stainless steel, iron, beryllium, aluminium copper or high resistance alloys polyvinylchloride, polyamide, polyester, polyethylene, polypropylene, isotactic polystyrene, polycarbonate, acrylic resin, acrylonitrile-butadiene-styrene resin, cellulose acetate, cellulose ether, spandex thread, uncured latex cut rubber threads, cotton, rayon or paper yarn or thread. The paper yarn can be impregnated prior to coiling with polyesters, epoxy resin, cellulose acetate butyrate, polyvinylchloride, urethane latices and natural and synthetic rubbers. The metal wire can be braided or twisted. The metal wire can be coated with phenol-formaldehyde resin, urea formaldehyde resin, polyvinylacetate, polyvinyl chloride, resin, esterified resin, polyurethane, polyvinyl formal, polyethylene, natural and synthetic rubber, neoprene, ethylene-propylene terpolymer, and fabrics made of silk, cotton, polyester and wool. The groups of coil strand reaches can be mechanically interlocked, bonded or fused together with or without pressure. The binder may encapsulate the strands or may be present only at the coil cross-over points. The binder may be a dispersion of polyvinyl chloride, acrylic resin, natural or synthetic rubber, urethane latices, solutions of "Bung " (Trade Mark) and neoprene rubber and polyvinyl choride, polyurethane or polyvinyl chloride. The coiled strand fabric can be laminated between layers of natural rubber, neoprene, butyl rubber, ethylene-propylene terpolymer polyethylene, polypropylene, polyvinyl chloride, polyamide, polyester or polyurethane. The layers may be made of different materials and may be reinforced with fibres or fabrics formed of jute, cotton, rayon, polyamide, polyester, polyvinylidene chloride, glass or wire. The layers can be bonded, optionally under heat and/or pressure, to the core fabric by natural rubber, neoprene, chlorinated rubber, butyl rubber, polyurethane or polyvinyl chloride. This binder can be applied to either or both of the core fabric or the surfacing layers in a continuous or discontinuous film. Alternatively the surface layers can be bonded by solvents or plastizers or by heat and/or pressure or by sewing.