| 摘要 |
1320710 Foam coated fabrics POLYMER CORP Ltd 7 Oct 1970 [5 Nov 1969] 47730/70 Heading B2E Foam rubber-backed fabrics are produced by applying to a fabric surface a thin precoating of a foamed latex composition in amount of less than 12 ounces dry weight per square yard of fabric, optionally partially or completely drying the precoating, applying over the precoating a thick backing coating of a different foamed latex compound comprising a rubbery polymer, filler and a vulcanizing agent for the rubbery polymer and drying the backing coating and vulcanizing the rubbery polymer of the backing coating in its foamed state. The precoat compound may contain 0 to less than 100 parts filler per 100 parts of rubber. The foams may be applied by spraying, spreading or by means of a lick-roller. The precoated fabric may be heated, as by infrared lamps, to evaporate the water before application of the top coating. The rubber may be natural or synthetic such as homopolymers of dienes, such as butadiene and isoprene or copolymers of dienes with vinyl halides, styrenes, unsaturated acids such as acrylic acid, and their amides, nitriles and esters such as acrylamide, acrylonitrile, and methylacrylate. The fabric may be a carpet. |
