Method for manufacturing separator web, method for manufacturing separator, separator web, and apparatus for manufacturing separator web
AssigneeSumitomo Chemical Company, Limited
InventorsKoichiro WATANABE, Tatsuya KATAOKA, Koji KASHU
Life of this patent
Estimating the term…
Abstract
To easily specify the position of a defect in a separator, a method for producing a separator original sheet (12b) includes the steps of: forming a separator original sheet (12b) including a separator original sheet (12c) and a heat-resistant layer coated on the separator original sheet (12c); detecting a defect (D) in the separator original sheet (12b); and recording information including information on a position of the defect (D) which position is a position in the width direction of the separator original sheet (12b).
Claims11
A separator original sheet producing method, comprising the steps of:
- forming a separator original sheet;
- detecting a defect in the separator original sheet;
- and
- recording defect information including information on a first position of the defect which first position is a position in a width direction of the separator original sheet.
A separator producing method, comprising the steps of:
- (a) forming a separator original sheet;
- (b) detecting a defect in the separator original sheet;
- (c) recording defect information including information on a first position of the defect which first position is a position in a width direction of the separator original sheet;
- (d) cutting the separator original sheet having the defect, of which the information has been recorded in the step (c), in a longitudinal direction of the separator original sheet into a plurality of separators;
- (e) reading the information;
- and
- (f) on a basis of the information read in the step (e), providing at least one of the plurality of separators with a mark for specifying the first position of the defect.
A separator original sheet, comprising, at a widthwise end thereof, information on a position of a defect in the separator original sheet which position is a position in a width direction.
A separator original sheet producing apparatus, comprising:
- a forming section configured to form a separator original sheet;
- a defect detecting section configured to detect a defect in the separator original sheet;
- and
- a defect information recording section configured to record defect information including information on a position of the defect which position is a position in a width direction of the separator original sheet.
Dependencies are inferred from the claim text.