Film production method and film production device
AssigneeSumitomo Chemical Company, Limited
InventorsKoji KASHU, Yusuke KON, Tatsuya SAKAMOTO, Jian WANG
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Abstract
A method of film production includes the steps of obtaining defect information including information on the position of a defect (D) in a separator original sheet (12b), slitting the separator original sheet (12b) to produce a plurality of separators (12a), and determining, on the basis of the defect information on a single defect (D), that a separator (12a) actually having the defect (D) and another separator (12a) adjacent to the above separator (12a) are defective.
Claims17
A film producing method, comprising the steps of:
- (a) obtaining defect information including information on a position of a defect in a film original sheet;
- (b) slitting the film original sheet along a slit line, extending in a longitudinal direction of the film original sheet, so as to produce a plurality of films;
- and
- (c) carrying out defectiveness determination for the plurality of films on a basis of the defect information so as to determine that a film out of the plurality of films which film actually has the defect and a film out of the plurality of films which film is adjacent to the film actually having the defect are each a defective film, wherein:
- in the step (a), the defect information indicates presence or absence of defectiveness in each of a plurality of divisional regions arranged on a surface of the film original sheet in a width direction of the film original sheet;
- and
- in the step (c), on the basis of the defect information on a single divisional region out of the plurality of divisional regions which single divisional region has the defect, a film including the single divisional region and a film adjacent to the film including the single divisional region are each determined as a defective film.
(canceled)
(canceled)
A film producing apparatus, comprising:
- a defect information obtaining section configured to obtain defect information including information on a position of a defect in a film original sheet;
- a slitting section configured to slit the film original sheet along a slit line, extending in a longitudinal direction of the film original sheet, so as to produce a plurality of films;
- and
- a determining section configured to carry out defectiveness determination for the plurality of films on a basis of the defect information so as to determine that a film out of the plurality of films which film actually has the defect and a film out of the plurality of films which film is adjacent to the film actually having the defect are each a defective film,
- wherein:
- the defect information indicates presence or absence of defectiveness in each of a plurality of divisional regions arranged on a surface of the film original sheet in a width direction of the film original sheet;
- and
- on the basis of the defect information on a single divisional region out of the plurality of divisional regions which single divisional region has the defect, the determining section determines that a film including the single divisional region and a film adjacent to the film including the single divisional region are each a defective film.
-19. (canceled)
Dependencies are inferred from the claim text.