Title:
MANUFACTURING METHOD OF STRETCHED FILM
Document Type and Number:
Japanese Patent JP2022149739
Kind Code:
A
Abstract:
To reduce looseness and/or wrinkles caused in a film which has been obliquely stretched.SOLUTION: A manufacturing method of a stretched film includes: holding right and left edges in a width direction of a long-sized film by right and left clips, respectively; making the right and left clips travel and move to obliquely stretch the film and then releasing from the right and left clips; and roll-conveying the film. The roll-conveying includes making the film pass through an oblique guide roll. The oblique guide roll is arranged obliquely to a horizontal plane so that a conveyance path length of an edge at a side where the film loosens is longer than a conveyance path length of an edge at a side where the film does not loosen.SELECTED DRAWING: Figure 3
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Inventors:
NAKAHARA AYUMU
SHIMIZU SUSUMU
KITAGISHI KAZUSHI
SHIMIZU SUSUMU
KITAGISHI KAZUSHI
Application Number:
JP2021052022A
Publication Date:
October 07, 2022
Filing Date:
March 25, 2021
Export Citation:
Assignee:
NITTO DENKO CORP
International Classes:
B29C55/20; B29C55/02; B65H23/028; G02B5/30
Domestic Patent References:
| JP2007076313A | 2007-03-29 | |||
| JP2017009883A | 2017-01-12 |
Foreign References:
| WO2016152384A1 | 2016-09-29 | |||
| WO2014073021A1 | 2014-05-15 | |||
| US5441190A | 1995-08-15 |
Attorney, Agent or Firm:
Takafumi Masui
Atsuko Uenoyama
Atsuko Uenoyama