The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 21, 2006
Filed:
Jul. 09, 2002
Satoshi Hayakawa, Inuyama, JP;
Norimi Tabota, Inuyama, JP;
Yoshinori Takegawa, Ohtsu, JP;
Katsuya Ito, Ohtsu, JP;
Shigeru Komeda, Osaka, JP;
Katsuhiko Nose, Osaka, JP;
Satoshi Hayakawa, Inuyama, JP;
Norimi Tabota, Inuyama, JP;
Yoshinori Takegawa, Ohtsu, JP;
Katsuya Ito, Ohtsu, JP;
Shigeru Komeda, Osaka, JP;
Katsuhiko Nose, Osaka, JP;
Toyo Boseki Kabushiki Kaisha, Osaka, JP;
Abstract
Disclosed is a heat-shrinkable polyester film having a specific composition. A heat shrinkage factor of a 10 cm square sample of the film in a maximal shrinkage direction of the film is not less than 20% under the condition that the sample is immersed in hot water of 85° C. for 10 seconds, and then in water of 25° C. for 10 seconds. The number of test pieces of the film having a rupture ratio of not more than 5% is not more than 10% to the total number of the test pieces under the condition that a tensile test of drawing the film in a direction orthogonal to the maximal shrinkage direction of the film is conducted with a distance between corresponding chucks of 100 mm, each test piece having 15 mm in width, a temperature of 23° C., and a drawing rate of 200 mm/min.