Title:
二軸延伸ポリプロピレンフィルム
Document Type and Number:
Japanese Patent JP6988981
Kind Code:
B2
Abstract:
To provide a biaxially-oriented polypropylene film useful as a protective film with excellent detachability, in which contamination, voids and air voids are hardly caused, and/or a non-silicone separator film.SOLUTION: A biaxially-oriented polypropylene film is formed from a polypropylene resin with a melt flow rate of 1.5 g/10 min to 6.0 g/10 min, comprising: a surface roughness of at least one surface with (a) 0.03 to 0.10 μm in center line roughness (Ra) and (b) 0.3 μm to 1.0 μm in maximum height (Rmax); a layer in which the number of fish eyes having a size (long diameter) of 50 μm or more is 100 pieces/m2 or less; and a thickness of 5 μm to 60 μm.SELECTED DRAWING: Figure 1
Inventors:
Tadakazu Ishiwatari
Takuji Nakagawa
Yuichi Shishido
Murase Shigeo
Akimitsu Matsui
Toru Oi
Kaichi Taniguchi
Takuji Nakagawa
Yuichi Shishido
Murase Shigeo
Akimitsu Matsui
Toru Oi
Kaichi Taniguchi
Application Number:
JP2020180600A
Publication Date:
January 05, 2022
Filing Date:
October 28, 2020
Export Citation:
Assignee:
Oji Holdings Co., Ltd.
International Classes:
B29C48/69; B29C48/08; B29C55/12; C08J5/18
Domestic Patent References:
| JP2000198862A | ||||
| JP2009113481A | ||||
| JP2001106804A | ||||
| JP8300470A |
Attorney, Agent or Firm:
Patent Business Corporation Saegusa International Patent Office
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