Thermoplastic resin paste impregnated substrates
AssigneeDynamit Nobel Aktiengesellschaft
InventorsGerhard Dost, Walter Gerber, Eberhard Jaeger, Erwin Moschter, Richard Weiss
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Abstract
A process for manufacturing porous textile substrates impregnated with thermoplastic polymeric pastes, especially fleeces or mats, with subsequent gelling out of polymeric paste, which comprises penetrating impregnating one side of a textile substrate with an evacuated paste comprised of a vinyl polymer and/or copolymers of vinyl chloride, while effecting complete displacement of air through the paste and compactly impregnating said substrate.
Claims10
A thermoplastic resin impregnated substrate which comprises a porous textile substrate in the form of a carrier sheet and a gelled thermoplastic resin unilaterally penetrating through said sheet and being free of air bubbles;
- said carrier sheet being impregnated only from one side with an evacuated thermoplastic resin paste comprised of a vinyl chloride polymer having a viscosity between 1,000 and 10,000 cp while effecting complete displacement of air through the paste and through the other side of the carrier sheet and the impregnated carrier sheet, then being heated to effect gellation of said thermoplastic resin.
Dependencies are inferred from the claim text.