公开(公告)号：US20160279898A1

公开(公告)日：2016-09-29

申请号：US15074302

申请日：2016-03-18

Applicant: TOKYO OHKA KOGYO CO., LTD.

Inventor： Takahiro SENZAKI ,  Takuya NOGUCHI ,  Yasuo SUZUKI ,  Toshiyuki OGATA

IPC: B32B5/32

CPC classification number: B32B5/32 ,  B32B2250/02 ,  G03F7/0002 ,  G03F7/0015 ,  G03F7/027 ,  G03F7/038 ,  G03F7/091 ,  G03F7/11

Abstract: A laminated film that is usable as a filter and has the strength high enough to withstand the pressure applied in filtration without breaking and a good filtration rate. The laminated film includes a thin film and a support film stacked on top of each other, the thin film having a thickness of 1 nm to 1 μm and including a first pore portion having one or more pores, the support film having a thickness of 1 to 100 μm and including a second pore portion having one or more pores. The pores of the thin film has an average aspect ratio of not more than 2, the thin film has an opening ratio of not more than 80%, and the first pore portion in the thin film is disposed so as to meet a predetermined relationship with the second pore portion in the support film.

Abstract translation: 可用作过滤器并且具有足够高的强度以承受过滤中施加的压力而不破裂和良好的过滤速率的层压膜。 层叠膜包括层叠在彼此的顶部的薄膜和支撑膜，薄膜的厚度为1nm〜1μm，并且具有包含具有一个以上的孔的第一孔部，该支撑膜的厚度为1 包括具有一个或多个孔的第二孔部分。 薄膜的平均纵横比不大于2，薄膜的开口率不大于80％，薄膜中的第一孔部分设置成与 支撑膜中的第二孔部分。