HEAT SHRINKABLE MULTILAYER FILM

Title:

HEAT SHRINKABLE MULTILAYER FILM

Document Type and Number:

WIPO Patent Application WO/2008/065998

Kind Code:

A1

Abstract:

Disclosed is a heat shrinkable multilayer film obtained by at least uniaxially stretching a multilayer film which comprises outer layers mainly composed of a block copolymer resin (a) composed of a styrene monomer and a conjugated diene monomer, and an intermediate layer mainly composed of a resin (c) wherein a component made from a rubber elastic body (b) is contained in the form of dispersed particles in a continuous phase of a styrene polymer which is composed of a styrene monomer and an n-butyl acrylate. The rubber elastic body (b) is a block copolymer composed of 20-45% by weight of a styrene monomer and 80-55% by weight of a conjugated diene monomer, and the rubber elastic body (b) content in the resin (c) is 3-20% by weight. The resin composition of the continuous phase of the resin (c) is composed of 78-93% by weight of a styrene monomer and 22-7% by weight of an n-butyl acrylate, and the resin (c) has a Vicat softening temperature of 60-85˚C.

Inventors:

KAWASAKI TOSHIHARU (JP)
YAMAMOTO TAKEHIRO (JP)

Application Number:

PCT/JP2007/072770

Publication Date:

June 05, 2008

Filing Date:

November 26, 2007

Export Citation:

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Assignee:

PS JAPAN CORP (JP)
KAWASAKI TOSHIHARU (JP)
YAMAMOTO TAKEHIRO (JP)

International Classes:

B32B27/30; B29C55/12; B29C61/06; B65D23/08; B65D65/40; B29K105/02; B29L7/00; B29L9/00

Foreign References:

JP2000029392A	2000-01-28
JPH11338356A	1999-12-10
JPH05104630A	1993-04-27
JP2004182944A	2004-07-02
JPH0929838A	1997-02-04
JP2002127326A	2002-05-08
JP2000006329A	2000-01-11
JP2000238192A	2000-09-05
JP2000000932A	2000-01-07
JPH09272182A	1997-10-21
JPH11291413A	1999-10-26
JP2000000932A	2000-01-07
JP2001001466A	2001-01-09

Other References: