Title:
METHOD FOR PRODUCING CONDUCTIVE FILM
Document Type and Number:
WIPO Patent Application WO/2022/059284
Kind Code:
A1
Abstract:
A method for producing a conductive film according to the present invention comprises: a step for preparing a resin composition that includes a polyolefin resin and carbon black; a step for extruding the resin composition from a die of an extruder; and a step for winding the resin composition that has been extruded from the die with a winder that has a cooling roller, so as to obtain a conductive film, wherein the thickness of the conductive film, when measured at 100 positions at 1-cm intervals in the MD for three points along the TD for a total of 300 measurements, averages to not more than 200 μm, and exhibits a variation range as expressed by formula (1) of not more than 15%, and in a measurement of the change of the elongation viscosity of a columnar test piece constituted by the resin composition that is carried out in a state where the test piece is subjected to uniaxial stretch deformation at a prescribed strain rate by pulling both ends of the test piece, the difference between the logarithm of the elongation viscosity when the prescribed strain rate is 0.02(/s) and the logarithm of the elongation viscosity when the prescribed strain rate is 0.1(/s), at the point when 5 (s) have elapsed from the start of the measurement, is less than 0.5 (Pa·s). Formula (1): Variation range (%) = 100 × (maximum film thickness – minimum film thickness) / average film thickness
More Like This:
| WO/2020/006074 | DIE ASSEMBLY FOR PRODUCING A FILM |
| WO/2013/015041 | METHOD FOR PRODUCING POLYESTER FILM, POLYESTER FILM, BACK SHEET FOR SOLAR CELL, AND SOLAR CELL MODULE |
| WO/2015/015427 | SUSTAINABLE POLYMER FILMS |
Inventors:
ISO TAKEHIRO (JP)
TANAKA AKIHIRO (JP)
TANAKA AKIHIRO (JP)
Application Number:
PCT/JP2021/023882
Publication Date:
March 24, 2022
Filing Date:
June 23, 2021
Export Citation:
Assignee:
GUNZE KK (JP)
International Classes:
B29C48/08; B29C48/305; B29C48/88; C08J5/18; C08K3/04; C08L23/00; B29K23/00; B29L7/00
Foreign References:
| JP2018137221A | 2018-08-30 | |||
| JP2012204292A | 2012-10-22 | |||
| JP2020087918A | 2020-06-04 | |||
| JPS63130643A | 1988-06-02 | |||
| JPS62132948A | 1987-06-16 |
Attorney, Agent or Firm:
TACHIBANA, Kenji et al. (JP)
Download PDF:
Previous Patent: REFRIGERATOR
Next Patent: INFORMATION PROCESSING METHOD, INFORMATION PROCESSING DEVICE, AND PROGRAM
Next Patent: INFORMATION PROCESSING METHOD, INFORMATION PROCESSING DEVICE, AND PROGRAM