Title:
フィルムの製造方法
Document Type and Number:
Japanese Patent JP7217177
Kind Code:
B2
Abstract:
To provide a film manufacturing method capable of reducing minute scratches generated in a process from film transportation to winding.SOLUTION: In a process from transporting to winding of a film in a film manufacturing method having a step of passing the film between a plurality of free rolls, the plurality of free rolls all satisfy a following equation (1). t×d×3.14×α/360≥83 (1) (In the equation, t is a time (seconds) until the free roll that rotates a roll rotation speed to 53 rpm stops, d is a diameter of the free roll (cm), and α is a holding angle (deg).SELECTED DRAWING: None
Inventors:
Toshiyuki Zento
Kazuaki Okamoto
Kazuaki Okamoto
Application Number:
JP2019040721A
Publication Date:
February 02, 2023
Filing Date:
March 06, 2019
Export Citation:
Assignee:
KURARAY CO.,LTD.
International Classes:
B29C48/90; B29C31/00; B29C48/08; B29C48/28; B29C48/92; B65H20/00
Domestic Patent References:
| JP2004058435A | ||||
| JP8131918A | ||||
| JP2014188748A | ||||
| JP2017170673A | ||||
| JP2016203416A | ||||
| JP2010082854A |
Attorney, Agent or Firm:
Patent Attorney Corporation Otani Patent Office