Title:
METHOD FOR PRODUCING NONWOVEN FABRIC
Document Type and Number:
Japanese Patent JP2020050983
Kind Code:
A
Abstract:
To provide a method for producing a nonwoven fabric, which exhibits a high tensile strength in a CD direction, has a low impedance when used in an electrochemical element separator, and is less likely to cause a curl due to a heat drying process during a battery assembly.SOLUTION: There is provided a method for producing a nonwoven fabric, in which a wet-laid nonwoven fabric containing a drawn polyester fiber and an undrawn polyester fiber is allowed to pass between a heated metal roll and an elastic roll to treat. The elastic roll has a hardness of 50 to 78 measured by using a type D durometer according to JIS K 6253-3:2012.SELECTED DRAWING: None
Inventors:
MIDORIKAWA MASATOSHI
Application Number:
JP2018180747A
Publication Date:
April 02, 2020
Filing Date:
September 26, 2018
Export Citation:
Assignee:
MITSUBISHI PAPER MILLS LTD
International Classes:
D04H1/4382; D04H1/435; D04H1/55; D21H13/24
Domestic Patent References:
| JP2015050175A | 2015-03-16 | |||
| JP2015118836A | 2015-06-25 | |||
| JP2005054348A | 2005-03-03 | |||
| JP2012045509A | 2012-03-08 | |||
| JP2013179034A | 2013-09-09 |
Foreign References:
| WO2010126113A1 | 2010-11-04 |