Title:
POWER STORAGE DEVICE EXTERIOR MATERIAL
Document Type and Number:
Japanese Patent JP2023017866
Kind Code:
A
Abstract:
To provide a sealant film for a power storage device exterior material, which is superior in moldability and hard to cause white powder to appear on its surface, and by which a sufficient lamination strength and a sufficient seal strength can be achieved.SOLUTION: A sealant film for a power storage device exterior material comprises a laminate having two or more layers including a first non-stretched film layer 7 disposed on a side closest to a metal foil, and a second non-stretched film layer 8 laminated on one face of the first non-stretched film layer. The first non-stretched film layer 7 contains a random copolymer containing propylene as a copolymerization component, and another copolymerization component other than the propylene, and contains no lubricant or a lubricant of over 0 ppm and 250 ppm or less. The second non-stretched film layer 8 contains a propylene-based polymer and a lubricant, the content of the lubricant in the second non-stretched film layer 8 being 500-5,000 ppm.SELECTED DRAWING: Figure 1
Inventors:
Daisuke Nakajima
Karatsu Makoto
Karatsu Makoto
Application Number:
JP2022174263A
Publication Date:
February 07, 2023
Filing Date:
October 31, 2022
Export Citation:
Assignee:
Resonac Packaging Co., Ltd.
International Classes:
H01M50/129; H01G11/78; H01M50/105; H01M50/121
Domestic Patent References:
| JP2014170721A | 2014-09-18 | |||
| JP2013101764A | 2013-05-23 | |||
| JP2014170720A | 2014-09-18 |
Attorney, Agent or Firm:
Yoshihito Shimizu
Hisayoshi Shimizu
Ken Takada
Hisayoshi Shimizu
Ken Takada