发明名称 Flexible multilayer film
摘要 A multilayer film is described which has at least one first layer (1) of thermoplastic polyurethane, at least one second layer (2) of thermoplastic elastomer, and optionally a third layer (3) of thermoplastic polyurethane. The ratio of the water vapor permeability level of the first layer (1) to the water vapor permeability level of the second layer (2), of the multilayer film is at least two. When the optional third layer (3) is present in the multilayer film, the first and third layers enclose the second layer. Also described are filled articles (e.g., water beds and hot/cold pads), which are fabricated from the multilayer films of the present invention.
申请公布号 US6524712(B1) 申请公布日期 2003.02.25
申请号 US20010826186 申请日期 2001.04.04
申请人 WOLFF WALSRODE AG 发明人 SCHLEDJEWSKI RALF;CASSEL ANTOINE;BRANDT RAINER;CRAIG AILEEN
分类号 B32B25/08;A61F7/00;B29C47/06;B32B7/02;B32B27/08;B32B27/40;(IPC1-7):B32B27/00 主分类号 B32B25/08
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