Microporous polyolefin multi layer film and preparing method...

Details Microporous polyolefin multi layer film and preparing method... Microporous polyolefin multi layer film and preparing method...

2011-08-23

2011-08-23

Vo, Hai (Department: 1788)

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

C428S317900, C428S315500, C428S315700

Reexamination Certificate

active

08003204

ABSTRACT:
The present invention relates to a multi-layered microporous polyolefin film for a battery separator and a method for preparing the same. The microporous multi-layered film of the present invention has a characteristics to have both the low shutdown temperature conferred by the polyethylene and the high melt fracture temperature conferred by the polypropylene and heat-resistant filler. In addition, it has the high strength and stability conferred by the micropores prepared under wet process and the high permeability and high strength conferred by the macropores prepared under dry process. Therefore, this multi-layered film can be used effectively to manufacture a secondary battery with high capacity and high power.

REFERENCES:
patent: 4247498 (1981-01-01), Castro
patent: 5480745 (1996-01-01), Nishiyama et al.
patent: 5641565 (1997-06-01), Sogo
patent: 5691077 (1997-11-01), Yu
patent: 6949315 (2005-09-01), Samii et al.
patent: 2006/1005507 (2006-03-01), Hoshida et al.
patent: 2006/0141351 (2006-06-01), Suh
patent: 2008/0118827 (2008-05-01), Call et al.
patent: 2009/0098450 (2009-04-01), Kikuchi et al.
patent: 1 942 000 (2008-07-01), None
patent: 2 006 088 (2008-12-01), None
patent: 2 298 817 (1996-09-01), None
patent: 2003-321323 (2003-11-01), None
patent: 2004/089627 (2004-10-01), None
patent: 2006/038532 (2006-04-01), None
patent: 2007/049568 (2007-05-01), None

Affiliated with

Also associated with

Rating

Microporous polyolefin multi layer film and preparing method... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Microporous polyolefin multi layer film and preparing method..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Microporous polyolefin multi layer film and preparing method... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2630008