Title:
METHOD FOR MEASURING SULFONATION DEGREE OF NONWOVEN FABRIC, SULFONATION TREATMENT APPARATUS OF NONWOVEN FABRIC AND METHOD FOR MANUFACTURING SEPARATOR FOR ALKALINE SECONDARY BATTERY
Document Type and Number:
Japanese Patent JP2015030957
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a method for measuring a sulfonation degree of nonwoven fabric by which the sulfonation degree is quickly measured, a sulfonation treatment apparatus of nonwoven fabric which can stabilize the sulfonation degree by immediately feeding back a measurement result of the sulfonation degree to an operation condition, and a method for manufacturing a separator for an alkaline secondary battery by which the separator for an alkaline secondary battery with less variation in characteristics can be manufactured.SOLUTION: A sulfonation degree is obtained using visible light diffuse reflectance of a nonwoven fabric surface. Then, a sulfonation treatment apparatus having a mechanism that feedbacks visible light diffuse reflectance to an operation condition of sulfonation treatment stabilizes a sulfonation degree of a nonwoven fabric, and a separator for an alkaline secondary battery is manufactured by using the sulfonation treatment apparatus, consequently a separator for alkaline secondary battery with less variation in characteristics can be easily manufactured.
Inventors:
KATO MAKOTO
SHIGEMATSU TOSHIHIRO
HIROTA NOBUAKI
OYAMA KEISUKE
SHIGEMATSU TOSHIHIRO
HIROTA NOBUAKI
OYAMA KEISUKE
Application Number:
JP2013164001A
Publication Date:
February 16, 2015
Filing Date:
August 07, 2013
Export Citation:
Assignee:
MITSUBISHI PAPER MILLS LTD
International Classes:
D06M11/55; H01M2/16