Title:
MANUFACTURING METHOD FOR RESIN FILM, AND RESIN FILM
Document Type and Number:
Japanese Patent JP2021053888
Kind Code:
A
Abstract:
To provide a manufacturing method capable of easily manufacturing a resin film that excels in slipperiness.SOLUTION: A manufacturing method for a resin film includes the steps for: 1 preparing a pre-stretched film provided with a resin layer comprising a crystalline resin that includes a crystalline polymer containing an alicyclic structure; 2 heating the pre-stretched film at a specific temperature Tp in a specific time tp; 3 stretching the pre-stretched film at a specific stretch temperature Ts by a specific area ratio to obtain a stretched film; and 4 lowering a temperature of the stretched film to a room temperature. After obtaining the stretched film in the step 3, a temperature of the stretched film is maintained to Ts or lower until the temperature of the stretched film reaches the room temperature in the step 4.SELECTED DRAWING: None
Inventors:
YAMADA SEI
Application Number:
JP2019178380A
Publication Date:
April 08, 2021
Filing Date:
September 30, 2019
Export Citation:
Assignee:
NIPPON ZEON CO
International Classes:
B29C55/02; C08J5/18
Foreign References:
| WO2018062067A1 | 2018-04-05 |
Attorney, Agent or Firm:
Sakai International Patent Office