Title:
HEAT-SHRINKABLE MULTILAYER FILM AND HEAT-SHRINKABLE LABEL
Document Type and Number:
WIPO Patent Application WO/2020/008811
Kind Code:
A1
Abstract:
The present invention provides a heat-shrinkable multilayer film, and a heat-shrinkable label having the heat-shrinkable multilayer film as a base film, wherein wrinkling or slackening of the label following attachment can be prevented when the label is attached to a container as a heat-shrinkable label for dry heat shrinkage. The present invention pertains to a heat-shrinkable multilayer film having: front and back layers containing a polyester-based resin; and an intermediate layer containing a polystyrene-based resin, wherein the dimensional change of the film in the TD direction as represented by equation (1) is -55 to -1000 μm, as measured by a thermomechanical analysis (TMA) in which the film is heated from 30°C to 60°C at a heating rate of 5°C/min and cooled from 60°C to 10°C at a cooling rate of 5°C/min while applying a load of 0.10 N. (1): Dimensional change = dimension in the TD direction at 20°C - dimension in the TD direction at 60°C.
Inventors:
OHNO NAOKI (JP)
Application Number:
PCT/JP2019/022935
Publication Date:
January 09, 2020
Filing Date:
June 10, 2019
Export Citation:
Assignee:
GUNZE KK (JP)
International Classes:
B32B27/36; B32B27/30; B65D23/00; G09F3/04
Foreign References:
| JP2009000898A | 2009-01-08 | |||
| JP2009178887A | 2009-08-13 | |||
| JP2011170379A | 2011-09-01 | |||
| JPS6141543A | 1986-02-27 | |||
| JP2002351332A | 2002-12-06 | |||
| JP2006015745A | 2006-01-19 |
Other References:
See also references of EP 3782814A4
Attorney, Agent or Firm:
YASUTOMI & ASSOCIATES (JP)
Download PDF: