Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
FILM ROLL MANUFACTURING METHOD
Document Type and Number:
WIPO Patent Application WO/2022/107491
Kind Code:
A1
Abstract:
This film roll manufacturing method includes: a stretching step for stretching an acrylic resin film F at least in a flow direction MD; a first winding step for winding the stretched film F on a first winding core W1; and a second winding step, following the first winding step, for winding the film F that has been wound around the first winding core W1 on a second winding core W2. The second winding step is initiated after the shrinkage rate of the film F in the flow direction MD reaches at least 0.015%, and is ended while said shrinkage rate is no greater than 0.035%.

Inventors:
ITONAGA KAREN (JP)
OKA AMANE (JP)
SHINAGAWA MASASHI (JP)
Application Number:
PCT/JP2021/037512
Publication Date:
May 27, 2022
Filing Date:
October 11, 2021
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
NITTO DENKO CORP (JP)
International Classes:
B29C55/02; B29C61/00; B65H18/00; G02B5/30
Foreign References:
JP2018016453A2018-02-01
JP2015186912A2015-10-29
JPS61134227A1986-06-21
JPS6288754A1987-04-23
Attorney, Agent or Firm:
OKAMOTO, Hiroyuki et al. (JP)
Download PDF:
View/Download PDF      PDF Help



 
Previous Patent: CONTROL METHOD, CONTROL DEVICE, AND PROGRAM

Next Patent: PROCESSOR DEVICE, OPERATION METHOD FOR PROCESSOR DEVICE, PROGRAM FOR PROCESSOR DEVICE, AND ENDOSCOPE...