具有由低横向拉伸诱导的高透气性的薄膜
申请公布号:CN1427863A
申请号:CN01808960.7
申请日期:2001.04.20
申请公布日期:2003.07.02
发明人:M·T·莫尔曼;P·H·王;A·T·奥诺;H·M·维尔希;C·J·莫雷尔;F·奥汗;P·S·波特尼斯;M·A·达利;S·P·L·康耶
分类号:C08J5/18;C08L23/02;B32B27/32;B32B27/12
主分类号:C08J5/18
代理人:卢新华;杨九昌
地址:美国威斯康星州
摘要:提供一种用于各种各样个人护理服装和防护服装的透气、基本不透液的薄膜和层合物。该薄膜和包含该薄膜的层合物可沿横向伸长到比原来未拉伸宽度至少大25%的拉伸宽度。该薄膜和层合物具有对应于未拉伸宽度的至少约500g/m<SUP>2</SUP>·24h的第一水蒸汽透过速率。对应于比未拉伸宽度大25%的拉伸宽度,该薄膜和层合物具有第二水蒸汽透过速率,它是第一水蒸汽透过速率的至少225%,且不小于约4000g/m<SUP>2</SUP>·24h。
主权项:1.一种基本不透液的薄膜,其在施加拉伸力后可沿横向伸长到比未拉伸宽度大至少25%的拉伸宽度;该薄膜具有对应于未拉伸宽度的至少约500g/m2·24h的第一水蒸汽透过速率;对应于比未拉伸宽度大25%的拉伸宽度,该薄膜具有第二水蒸汽透过速率,它是第一水蒸汽透过速率的至少225%,且不小于约4000g/m2·24h。
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