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US 2020/0287190 A1Published application
Porous composite film, separator for battery, and method of manufacturing porous composite film
AssigneeToray Industries, Inc.
InventorsTakayuki Taguchi, Shozo Masuda, Yasuki Shimizu
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Abstract
A porous composite film includes: a porous substrate which is a polyolefin; and a porous layer laminated on at least one surface of the porous substrate. The porous layer satisfies the following requirements a) and b): a) a value of D50 of the cross-sectional void area distribution of the porous layer is less than 0.060 μm2, and a value of D90 thereof is less than 0.200 μm2; and b) a resin constituting the porous layer is a fluorine-containing resin.
Claims6
-5. (canceled)
A porous composite film comprising:
- a porous substrate which is a polyolefin;
- and
- a porous layer laminated on at least one surface of the porous substrate,
- wherein the porous layer satisfies a) and b):
- a) a value of D50 of a cross-sectional void area distribution of the porous layer is less than 0.060 μm2, and a value of D90 thereof is less than 0.200 μm2;
- and
- b) a resin constituting the porous layer is a fluorine-containing resin.
4 more elements
Dependencies are inferred from the claim text.