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US 2017/0307971 A1Published application
Film production method and film production device
AssigneeSumitomo Chemical Company, Limited
InventorsKoji KASHU, Yusuke KON, Tatsuya SAKAMOTO, Jian WANG
Life of this patent
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Abstract
A method for film production includes the steps of obtaining information on the position of a defect (D) in a separator (12a) and providing marks (LA, LB) at the respective positions in the vicinity of the defect (D), the marks indicating the position of the defect.
Claims12
A film producing method, comprising the steps of:
- (a) obtaining information on a position of at least one defect in a film;
- and
- (b) providing a plurality of markings at respective positions in a vicinity of the at least one defect, the plurality of markings indicating the position of the at least one defect,
- in the step (a), the information on the position indicating presence or absence of defectiveness in each of a plurality of divisional regions of a unit region having a predetermined length in a longitudinal direction of the film, the plurality of divisional regions being arranged in a width direction of the film,
- in the step (b), the plurality of markings including a pair of markings provided in such a manner that one of the pair of markings lies on a first side, in the longitudinal direction of the film, of a divisional region out of the plurality of divisional regions which divisional region has the at least one defect and that the other of the pair of markings lies on a second side, in the longitudinal direction of the film, of the divisional region having the at least one defect.
2 more elements
(canceled)
(canceled)
A film producing apparatus, comprising:
- a defect information obtaining section configured to obtain information on a position of a defect in a film;
- and
- a defect marking providing section configured to provide a plurality of markings at respective positions in a vicinity of the defect, the plurality of markings indicating the position of the defect,
- the defect information obtaining section being configured to obtain, as the information on the position, information indicating presence or absence of defectiveness in each of a plurality of divisional regions of a unit region having a predetermined length in a longitudinal direction of the film, the plurality of divisional regions being arranged in a width direction of the film,
- the defect marking providing section being configured to provide a pair of markings in such a manner that one of the pair of markings lies on a first side, in the longitudinal direction of the film, of a divisional region out of the plurality of divisional regions which divisional region has the at least one defect and that the other of the pair of markings lies on a second side, in the longitudinal direction of the film, of the divisional region having the at least one defect.
2 more elements
-15. (canceled)
Dependencies are inferred from the claim text.