The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 16, 2012
Filed:
Nov. 09, 2009
Toru Terakawa, Nagahama, JP;
Miho Yamamoto, Nagahama, JP;
Takeyoshi Yamada, Nagahama, JP;
Yasushi Usami, Nagahama, JP;
Toru Terakawa, Nagahama, JP;
Miho Yamamoto, Nagahama, JP;
Takeyoshi Yamada, Nagahama, JP;
Yasushi Usami, Nagahama, JP;
Mitsubishi Plastics, Inc., Tokyo, JP;
Abstract
Provided is a laminated porous film having excellent shutdown characteristics and breakdown characteristics, good tearing strength and dimensional stability, and B activity. The laminated porous film comprises layer A, the main component of which is a polypropylene resin, and layer B which contains a polyethylene resin, and the ratio of the rearing strength (H) in the machine direction (MD) of the laminated porous film and the tearing strength (H) in the transverse direction (TD) of the laminated porous film with respect to the machine direction (H) (H) is 0.08 to 2.0.