Title:
【発明の名称】多層、微孔質ポリオレフインシート物質およびその製造方法
Document Type and Number:
Japanese Patent JP2851061
Kind Code:
B2
Abstract:
A multi-layer, microporous polyolefin sheet is provided with at least two microporous polyolefin layers autogenously bonded together to have the same porosity as prior to bonding. The sheet material is formed by blending a polyolefin with an additive which separates on cooling, extracting the additive from each layer with a solvent after cooling and drying the layers in contact to effect bonding. As compared to previous laminated products, the product does not have altered porosity at the interface nor contamination with bonding agents.
Inventors:
JEEMUSU SUCHIIBUN MUROJINSUKII
Application Number:
JP17786989A
Publication Date:
January 27, 1999
Filing Date:
July 10, 1989
Export Citation:
Assignee:
MINESOTA MAININGU ANDO MFG CO
International Classes:
B01D67/00; B01D69/12; B32B5/32; B32B27/32; C08J5/12; C08J9/26; C08J9/28; C08J9/36; H01M50/417; H01M50/449; H01M50/491; (IPC1-7): C08J9/26; B32B5/32; C08J9/28; C08J9/36
Domestic Patent References:
| JP6210857A | ||||
| JP63243146A |
Attorney, Agent or Firm:
Akira Asamura (2 outside)