Title:
微多孔膜捲回体及びその製造方法
Document Type and Number:
Japanese Patent JP7409042
Kind Code:
B2
Abstract:
To prevent a microporous membrane wound body of 15 mm to 200 mm in width from causing winding misalignment, and particularly to obtain a microporous membrane wound body where winding misalignment does not occur even when temperature changes significantly to lower temperature side during storage or transportation.SOLUTION: The microporous membrane wound body is formed by winding microporous membrane of 15 mm to 200 mm in width onto a cylindrical winding core, and the elongation amount of the wound microporous MD is 0.25% to 0.8%. In addition, an outer peripheral length of the cylindrical winding core is 500 mm to 950 mm, and the dimensional change amount for 10°C of the outer peripheral length is 0.3 mm to 1.0 mm.SELECTED DRAWING: Figure 1
Inventors:
Tsutomu Fukumoto
Nobuaki Suzuki
Hiroya Okamoto
Nobuaki Suzuki
Hiroya Okamoto
Application Number:
JP2019212259A
Publication Date:
January 09, 2024
Filing Date:
November 25, 2019
Export Citation:
Assignee:
Toray Industries, Inc.
International Classes:
B65H18/28; B32B5/32; B32B7/022; B32B27/32; B65H23/18; C08J9/26; H01M50/409
Domestic Patent References:
| JP2016199734A | ||||
| JP2014224240A |
Foreign References:
| WO2011024849A1 | ||||
| WO2010073707A1 |
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