ZDOLNY DO POBIERANIA I PRZEPUSZCZANIA PARY WODNEJ PRODUKT POWIERZCHNIOWY Z POLICHLORKU WINYLU ORAZ SPOSOB JEGO WYTWARZANIA

摘要

This invention relates to a sheet-like structure of polyvinyl chloride or a copolymer of vinyl chloride, which is capable of absorbing water vapor and transmitting water vapor, with a uniformly incorporated additive composed of polymeric particles of at least one swellable, modified polymer. The invention also relates to a process for manufacturing the sheet-like structure.