THERMALLY SHRINKABLE LAMINATED FILM - DENKI KAGAKU KOGYO KK

Title:

THERMALLY SHRINKABLE LAMINATED FILM

Document Type and Number:

WIPO Patent Application WO/2011/040408

Kind Code:

A1

Abstract:

Disclosed is a thermally shrinkable laminated film which is produced by laminating an intermediate layer comprising a block copolymer resin composition containing a specific block copolymer directly between a front layer and a back layer each comprising a polyester resin, and which has good interlayer adhesion strength. Specifically disclosed is a thermally shrinkable laminated film which is produced by stretching a three-layered laminated sheet in at least one direction so that the interlayer adhesion strength becomes 0.6 N/15 mm or more, wherein the three-layered laminated sheet comprises an intermediate layer and a front layer and a back layer both comprising a polyester resin, wherein the three-layered laminated sheet comprises an intermediate layer, a front layer and a back layer, the intermediate layer comprises a resin composition comprising two types of block copolymers each having a specific structure and a specific composition at a specified content ratio, and each of the front layer and the back layer comprises a polyester resin.

Inventors:

SATO EIJI (JP)
OHISHI MASAYUKI (JP)
NAKAZAWA HITOSHI (JP)

Application Number:

PCT/JP2010/066840

Publication Date:

April 07, 2011

Filing Date:

September 28, 2010

Export Citation:

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Assignee:

DENKI KAGAKU KOGYO KK (JP)
SATO EIJI (JP)
OHISHI MASAYUKI (JP)
NAKAZAWA HITOSHI (JP)

International Classes:

B32B27/30

Domestic Patent References:

WO2007032328A1	2007-03-22
WO2009063988A1	2009-05-22

Foreign References:

JP2007038586A	2007-02-15
JP2004196978A	2004-07-15
JP2004018800A	2004-01-22
JPS58225146A	1983-12-27
JP2000006321A	2000-01-11
JP2009185105A	2009-08-20
JP2004170715A	2004-06-17
JP2005131824A	2005-05-26
JPH10244635A	1998-09-14
JP2006323340A	2006-11-30

Other References: