METHOD FOR MANUFACTURING FILM, FILM, LAMINATED BODY, AND PACKAGING MATERIAL

Title:

METHOD FOR MANUFACTURING FILM, FILM, LAMINATED BODY, AND PACKAGING MATERIAL

Document Type and Number:

WIPO Patent Application WO/2020/040024

Kind Code:

A1

Abstract:

Provided is a method for manufacturing a film that has excellent water vapor barrier properties, tensile extensibility, and transparency. This film is obtained by: melting a resin material containing polychlorotrifluoroethylene (PCTFE); extruding the molten material from an extrusion die in a film shape; bringing the extruded object into contact with a cooling roll at a surface temperature of 120°C or lower in a state in which the surface temperature of the extruded object is higher than the crystallization temperature of PCTFE; molding a film web; and heating the film web at 80-200°C.

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Inventors:

HIGUCHI YOSHIAKI (JP)
FUKUNAGA SHINTARO (JP)
YAOITA TAKATOSHI (JP)

Application Number:

PCT/JP2019/031976

Publication Date:

February 27, 2020

Filing Date:

August 14, 2019

Export Citation:

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Assignee:

AGC INC (JP)

International Classes:

B29C48/88; C08J7/00; B29C71/02; B32B27/30; B65D65/02; C08J5/18

Foreign References:

JPH05185506A	1993-07-27
JPH06511271A	1994-12-15
JPH02116546A	1990-05-01
JPH02141224A	1990-05-30

Attorney, Agent or Firm:

T.S. PARTNERS et al. (JP)

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