Title:
熱収縮性フィルム、熱収縮ラベル、および包装体
Document Type and Number:
Japanese Patent JP7352844
Kind Code:
B2
Abstract:
The invention provides a heat-shrinkable film that has (1) a glass transition temperature (Tg) of 90-140° C.; (2) shrinkage of 12% or less in a main shrinkage direction when treated in glycerin at 80° C. for 10 seconds; (3) shrinkage of 12% or less in a direction orthogonal to the main shrinkage direction when treated in glycerin at 140° C. for 10 seconds; (4) shrinkage of 30%-80% in the main shrinkage direction when treated in glycerin at 140° C. for 10 seconds; (5) a tensile elongation at break of 10% or more both in the main shrinkage direction and the orthogonal direction after aging of 672 hours at 50° C. and 70% RH; and (6) a difference of 5% or less between shrinkage at 140° C. in the main shrinkage direction after aging of 672 hours at 50° C. and 70% RH, and shrinkage at 140° C. in the main shrinkage direction before the aging.
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Inventors:
Masayuki Haruta
Application Number:
JP2022032454A
Publication Date:
September 29, 2023
Filing Date:
March 03, 2022
Export Citation:
Assignee:
Toyobo Co., Ltd.
International Classes:
C08J5/18; B29C61/02; B29C61/06; C08F32/00; C08G63/181
Domestic Patent References:
| JP9272150A | ||||
| JP2003025438A | ||||
| JP8323859A |