| 摘要 |
<p>971,655. Coated sheet material. SEKISUI ADOHEYA KOGYO KABUSHIKI KAISHA. March 22, 1962 [Dec. 29, 1961], No. 10978/62. Heading B2E. Resin-coated articles comprise a core of yarns surrounded by and embedded in a foamed thermoplastic resin coating, and are produced by immersing a length of yarn 1 in a viscous liquid containing a thermoplastic resin in such a manner that the resin fills the spaces between the monofibres of the yarn and forms a thin coating 2 on the external surface of the yarn, forming a yarn group consisting of a plurality of such coated yarns aligned in a direction parallel with their longitudinal axes (Fig. 4), applying to the yarn group a plasticized foamable thermoplastic resin coating 3 and foaming the coating. The yarns may comprise glass fibres (which may be pretreated with vinyl trichlorosilane or methacrylato chromic chloride), polyamide, polyester, polyvinyl formal, polyacrylonitrile, polyvinyl chloride, cotton or linen, or yarns spun from mixed synthetic or natural fibres. The thermoplastic resin used in forming the outer resin layer may be polymers or copolymers of vinyl chloride, ethylene, styrene or propylene, and natural or synthetic rubbers. The initial coating of thermoplastic resin may be applied as a suspension of fine particles of thermoplastic resin in water, emulsions in a suitable disperse phase, solutions in a suitable solvent, or compositions formed by suspending the resin in a foaming agent or plasticizer. As shown in Fig. 3, a plurality of longitudinally aligned coated yarns may be formed into a warp, and woof yarns woven into them, before application of the foamable coating. Suitable foaming agents are specified.</p> |
