Membrane film for batteries having a shut-off function

Details Membrane film for batteries having a shut-off function Membrane film for batteries having a shut-off function

B - Operations, Transporting

32

B

B32B 27/32 (2006.01)

Patent

CA 2724025

The invention relates to a biaxially oriented microporous film composed of at least two coextruded layers encompassing an external shut-off layer and another layer, both layers containing a mixture of propylene homopolymer, propylene block copolymer, and 13-nucleation agent. The propylene block copolymer I of the other layer has a melting point exceeding 140°C, and the propylene block copolymer II of the external shut-off layer has a melting range starting at a temperature ranging from 50 to 120°C. The melting point of propylene block copolymer I is higher than the melting point of propylene block copolymer II.

L'invention concerne un film microporeux monocouche à orientation biaxiale, composé d'au moins deux couches coextrudées, comprenant une couche de rupture extérieure et une autre couche, les deux couches contenant un mélange d'homopolymère de propylène, de copolymère séquencé de propylène et d'un agent de nucléation ß. Le copolymère séquencé de propylène (I) de l'autre couche présente un point de fusion supérieur à 120°C et le copolymère séquencé de propylène (II) de la couche de rupture extérieure présente une plage de fusion qui commence à une température comrpise entre 50 à 120°C. l Le point de fusion du copolymère séquencé de propylène (I) est supérieur à celui du copolymère séquencé de propylène(II).

Affiliated with

Also associated with

Rating

Membrane film for batteries having a shut-off function does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Membrane film for batteries having a shut-off function, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Membrane film for batteries having a shut-off function will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1788452