Title:
PRODUCTION METHOD OF STRETCHED FILM, AND PRODUCTION APPARATUS OF STRETCHED FILM
Document Type and Number:
Japanese Patent JP2020049796
Kind Code:
A
Abstract:
To provide a production method of a stretched film suppressed in generation of a scratch and a crease when producing a stretched film by continuously stretching in a conveying direction by a circumferential velocity difference of rollers, and a production apparatus of a stretched film.SOLUTION: The production method of a stretched film includes a process 1 of continuously stretching a resin film composed of a thermoplastic resin in a conveying direction by a circumferential velocity deference of a first roll and a second roll rotatable in a circumferential direction, where the first process 1 further includes a process 1A of conveying the resin film from the first roll to the second roll by a conveying member, the conveying member has an arc-sectioned part having a section parallel with a conveying direction of an arc-shape, and the conveying member conveys the resin film in a noncontact state by holding the resin film to the arc-sectioned part.SELECTED DRAWING: Figure 1
Inventors:
HIRANO YUYA
Application Number:
JP2018181699A
Publication Date:
April 02, 2020
Filing Date:
September 27, 2018
Export Citation:
Assignee:
NIPPON ZEON CO
International Classes:
B29C55/06
Attorney, Agent or Firm:
Sakai International Patent Office