Title:
METHOD FOR PRODUCING SEALANT FILM
Document Type and Number:
WIPO Patent Application WO/2018/070257
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a method for producing a sealant film which exhibits excellent tearing properties and can be torn in a straight line. The present invention relates to a method for producing a sealant film, the method being characterized in that a resin that contains a propylene-based block copolymer resin is supplied to an inflation molding-type extrusion film production apparatus and the resin is melt extruded at a blowing ratio of 1.0-2.9 and a draw down ratio of 7-60.
Inventors:
HAMASAKI KEISUKE (JP)
USUI TATSUHIKO (JP)
USUI TATSUHIKO (JP)
Application Number:
PCT/JP2017/035174
Publication Date:
April 19, 2018
Filing Date:
September 28, 2017
Export Citation:
Assignee:
DAINIPPON INK & CHEMICALS (JP)
International Classes:
B29C55/28; B29C48/10; B29C48/32; C08J5/18; B29C48/885
Foreign References:
| JP2003105162A | 2003-04-09 | |||
| JPH09174776A | 1997-07-08 | |||
| JP2004115704A | 2004-04-15 | |||
| JP2012082857A | 2012-04-26 |
Attorney, Agent or Firm:
KONO Michihiro (JP)
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