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Title:
HEAT-SHRINKABLE POLYESTER-BASED FILM AND PACKAGING BODY
Document Type and Number:
WIPO Patent Application WO/2014/017483
Kind Code:
A1
Abstract:
Provided is a heat-shrinkable polyester-based film having: a slow shrinkage speed; a shrinkage rate that increases gently with the increase of temperature; a large shrinkage stress; and an excellent shrinkage finish. This heat-shrinkable polyester-based film is characterized in that: the ratio (A1/A2) between the absorbancy (A1) at 1340 cm-1 of the heat-shrinkable polyester-based film measured by the polarized ATR-FTIR method and the absorbancy (A2) at 1410 cm-1 is from 0.65 to 0.9 in the main shrinkage direction of the film and from 0.45 to 0.75 in the direction orthogonal to the main shrinkage direction; and the warm-water heat shrinkage rate for when the film is immersed in 90-degree warm water for 10 seconds is from 40% to 60% in the main shrinkage direction of the film and from 0% to 12% in the direction orthogonal to the main shrinkage direction.

Inventors:
HARUTA MASAYUKI (JP)
MUKOYAMA YUKINOBU (JP)
Application Number:
PCT/JP2013/069908
Publication Date:
January 30, 2014
Filing Date:
July 23, 2013
Export Citation:
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Assignee:
TOYO BOSEKI (JP)
International Classes:
B29C61/06; C08J5/18; G09F3/04; B29K67/00; B29K105/02; B29L7/00
Domestic Patent References:
WO2011114934A12011-09-22
WO2010137240A12010-12-02
WO2010137240A12010-12-02
Foreign References:
JP2009143607A2009-07-02
JP2011252129A2011-12-15
Other References:
KIYOMI UENOMACHI: "Shrinkage property control of heat-shrinkable polyester film", SEIKEIKAKOU, vol. 6, no. 10, 1994, pages 679 - 682
See also references of EP 2792469A4
Attorney, Agent or Firm:
UEKI, Kyuichi et al. (JP)
Hisakazu Ueki (JP)
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