Title:
THERMALLY SHRINKABLE POROUS POLYESTER FILM
Document Type and Number:
Japanese Patent JP3509079
Kind Code:
B2
Abstract:
PURPOSE: To prepare the subject film which is almost free from defects such as wrinkles, strain, and nonuniform shrinkage, has a beautiful finished appear ance, and has cushioning properties and hence is excellent in the prevention of breakage of a glass container when used for packaging or labelling it.
CONSTITUTION: This porous polyester film has an apparent specific gravity of 0.4-1.3 and exhibits a shrinkage in the direction of the main shrinkage of 40% or higher and a shrinkage in the direction transverse to the main shrinkage of 20% or lower both when heated for 1min with air at 100°C, and exhibits a shrinkage in the direction of the main shrinkage of 12% or higher when heated for 10sec with air at 100°C to shrink the film by 40% and then heated for 10sec with.
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Inventors:
Kuze, Katsuro
Shimizu, Hidenori
Okumura, Shinichiro
Isaka, Tsutomu
Shimizu, Hidenori
Okumura, Shinichiro
Isaka, Tsutomu
Application Number:
JP19753493A
Publication Date:
March 22, 2004
Filing Date:
August 09, 1993
Export Citation:
Assignee:
TOYOBO CO LTD
International Classes:
B29C55/02; B29C61/06; C08J9/00; B29K67/00; B29K105/02; B29L7/00; (IPC1-7): C08J9/00
Attorney, Agent or Firm:
山本 秀策