| 摘要 |
PURPOSE:To obtain a water barrier sheet having excellent water stopping property of nail hole and moisture permability, useful as a building material such as a house wrap and an under roofing material. CONSTITUTION:A highly water absorbing polymer having >=50 times water absorbing ratio is stuck fast to at least one side of polyolefinic nonwoven fabric obtained by the flash spinning method, thus the pick-up of the highly water absorbing polymer (a)(g/m<2>) becomes in a range of 10<=a<=100 and that of the binder (b) in a range of 0.1a<=b<=50 to give the objective water barrier sheet. |
