公开(公告)号：US20190194412A1

公开(公告)日：2019-06-27

申请号：US15781596

申请日：2016-12-08

Applicant: YUPO CORPORATION

Inventor： Shouichi ISHIMOTO ,  Yousuke HIROI ,  Kazuhisa KITAMURA

IPC: C08J9/00 ,  B32B27/32 ,  B32B27/08 ,  B32B27/20

CPC classification number: C08J9/0066 ,  B32B27/08 ,  B32B27/205 ,  B32B27/32 ,  B32B2264/10 ,  B32B2307/72 ,  B32B2307/724 ,  B32B2307/7265 ,  C08J9/00 ,  C08J2201/02 ,  C08J2323/02 ,  C08K2003/265 ,  C08K2201/003 ,  C08K2201/005

Abstract: The present invention is to provide a resin film having both water impermeability and moisture permeability. The polyolefin stretched porous film according to an embodiment of the present invention contains a polyolefin-based resin and a fine filler having an average primary particle size of 0.05 to 0.8 μm, and has a communicating void. Furthermore, the polyolefin stretched porous film according to an embodiment of the present invention contains a hydrophobizing agent, a water permeability measured in accordance with JIS Z 0221 is from 10000 to 85000 seconds, and a moisture permeability measured in accordance with JIS Z 0208 is from 300 to 2500 g/m2·24 h.