| 摘要 |
<p>1,002,139. Laminates. DAUBERT CHEMICAL CO. Feb. 20, 1962 [July 10, 1961], No. 6559/62. Heading B5N. A sound damping tape consists of a layer of adhesive sound dissipative material, to which spaced areas of non - adhesive conversion material, e.g. creped or similarly embossed, or grooved paper, are adhered to cover the greater part of the width of the tape leaving intermediate adhesive surfaced areas. Sound dissipative materials specified are resins, asphaltic bitumens, polymers, e.g. polybutene, copolymers of isoprene and isobutylene, polyisobutylene, polyvinyl chloride, natural gum, rubber and synthetic rubbers, e.g. butyl rubber. The sound dissipative material may contain fillers and/or pigments, e.g. asbestos and calcium carbonate. Alternative conversion materials specified are creped glassine, resin impregnated paper, paper coated burlap, parchment paper, glassine paper, glass fibre, polyurethane and polystyrene foams. The sound dissipative material may be carried on a flexible tape base of aluminium or other metal or alloys, foil plastics or cellulose derivatives the reverse side of which may have a coating of release agent permitting the tape to be rolled up. Fig. 1 shows a paper laminated aluminium foil base tape 11 upon the paper side of which is an adhesive sound dissipative material 12 which carries spaced sheets of creped parchment paper 13 leaving spaced adhesive areas 14.</p> |
