Title:
A lamination porosity film and an accumulation-of-electricity device
Document Type and Number:
Japanese Patent JP6273898
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a laminated porous film that has good air permeability, is excellent in strength and heat resistance, and can be suitably used as a separator for an electricity storage device.SOLUTION: The laminated porous film has an inorganic particle-containing layer on at least one side of a porous polyolefin film. When a value of storage elastic modulus at 25°C in the longitudinal direction of the film as determined by dynamic viscoelasticity measurement is represented as E'C, a value at 130°C is represented as E'C, and a value at 150°C is represented as E'C, the laminated porous film has E'Cof 1 GPa or more, a value of E'C/E'Cof 10 or less, and a value of E'C/E'Cof 20 or more. When a thermal shrinkage at 150°C as determined in the width direction of the film is represented as HC, the laminated porous film has HCof 5% or less.
Inventors:
Takuya Kuma
Nozomi Yokoyama
Masatoshi Okura
Nozomi Yokoyama
Masatoshi Okura
Application Number:
JP2014036451A
Publication Date:
February 07, 2018
Filing Date:
February 27, 2014
Export Citation:
Assignee:
TORAY INDUSTRIES,INC.
International Classes:
B32B27/32; B32B5/18; C08J9/00; H01M2/16
Domestic Patent References:
| JP2008248231A | ||||
| JP7228718A |
Foreign References:
| WO2012099149A1 |
Previous Patent: An adhesives coating method and a mounting substrate manufacturing method
Next Patent: THIN FILM ULTRASONIC WAVE CONVERTER
Next Patent: THIN FILM ULTRASONIC WAVE CONVERTER