| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for manufacturing a separator for a lithium ion secondary battery at high productivity, the separator being capable of achieving both internal resistance and self discharge properties at a favorable level, in a method for manufacturing a separator for a lithium ion secondary battery, the separator comprising a nonwoven fabric base material with a coating layer formed thereon. ! SOLUTION: In a method for manufacturing a separator for a lithium ion secondary battery, the separator comprising a nonwoven fabric base material with a coating layer formed thereon, a coating liquid is applied on a nonwoven fabric base material, and then, when the coating liquid is in a wet state, a blade is brought into contact with a coating surface of the nonwoven fabric base material while a contact angle between the nonwoven fabric base material and the blade is 20-70°. ! COPYRIGHT: (C)2015,JPO&INPIT |
