| 摘要 |
1,196,078. Metallizing textiles. TEIJIN Ltd. May 17, 1968, No 23739/68. Heading C7F. [Also in Division D1] A textile material having anti-static properties comprises organic textile fibres and a minor amount of electrically-conductive fibres, each electricallyconductive fibre comprising a substrate of organic synthetic fibre and a metallic coating chemically deposited thereon, and possessing the functional properties of a textile fibre. The proportion of coated fibres may vary from 0À01 to 10 per cent by weight. The thickness of the metallic coating may vary from 0À01 to 1À5 microns. The metallic coating may be protected by a coating of organic polymeric material. Said substrate is preferebly one acrylic polymer having an acoylonitrile content of at least 80 Mol per cent, but may be a polyester having an ethylene terephthalate content of at least 80 mol per cent. The substrate fibre can have a textile denier of from 1 to 50 deniers. The material may be in the form of yarn, string, cord, tape, woven fabric, knitted fabric or non-woven fabric. The metallic coating is preferably of nickel or copper, but cobalt, chromium, zinc or tin may be used. The substrate, prior to coating, is measured degreased, etched, sensitized and activated. With acrylic fibres, said etchants of the chromic acid - sulphuric acid type may be used. With polyester fibres an alkali etchout is used to effect a weight decrease of from 0À3 to 10 per cent. Sensitizing is effected in an acid or alkaline bath of a stannous compound, titanium trichloride, or aluminium chloride. Activation consists in coating the substrate with a noble metal such as palladium, platinum, gold or rhodium by means of an activator such as the palladium chloride-hydrochloric acid type. |
