Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
RESIN FILM AND PRODUCTION METHOD THEREOF
Document Type and Number:
WIPO Patent Application WO/2022/004852
Kind Code:
A1
Abstract:
The purpose of the invention is to provide a method for producing a resin film capable of effectively suppressing deterioration of a haze ratio in the central portion of the film, which is due to the addition of a lubricant, when producing a film having excellent transparency. A method for producing a resin film comprising: a step A for applying a first resin composition solution to a central portion of a support; a step B for applying a second resin composition solution including inorganic fine particles to both ends adjacent to the central portion; a step C for drying the first resin composition solution and the second resin composition solution to obtain a pre-cut film laminate; a step D for peeling the pre-cut film laminate from the support to obtain a pre-cut film; a step E for gripping both ends of the pre-cut film with a tenter type transport device after the step D; a step F for transporting the pre-cut film while gripping both ends of the pre-cut film; and a step G for removing a part or all of the portion formed from the second resin composition solution from the pre-cut film after the step F. The method being characterized in that the content of the inorganic fine particles at both ends is higher than the content of the inorganic fine particles in the central portion.

Inventors:
YONEMUSHI HARUMI (JP)
WATANABE NAOKI (JP)
MAEDA SATOSHI (JP)
WAKUI HIROYUKI (JP)
MIZUGUCHI DENICHIROU (JP)
Application Number:
PCT/JP2021/024995
Publication Date:
January 06, 2022
Filing Date:
July 01, 2021
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
TOYO BOSEKI (JP)
International Classes:
B05D1/36; B05D3/12; B05D7/04; B05D7/24; B29C41/12; B29C41/36; B29K79/00; B29L7/00
Foreign References:
JP2014159137A2014-09-04
JP2015098139A2015-05-28
JP2011248198A2011-12-08
Download PDF: