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:
Jan. 29, 2002
Filed:
Jan. 26, 2001
Satoshi Hayakawa, Inuyama, JP;
Hideto Ohashi, Inuyama, JP;
Norimi Tabota, Inuyama, JP;
Maki Sato, Ohtsu, JP;
Chikao Morishige, Ohtsu, JP;
Toyo Boseki Kabushiki Kaisha, Osaka, JP;
Abstract
Heat-shrinkable polyester films suitable for label use, wherein the value of tan &dgr; for dynamic viscoelasticity in a main shrinkage direction of the film is 0.15 or higher at 65° C. and takes a maximum of 0.40 or higher at a temperature of 65° C. to 100° C. both inclusive, and the heat shrinkability in the main shrinkage direction of the film after treatment in hot water at 80° C. for 10 seconds is 30% or higher, have excellent shrinkage characteristics over a wide range of temperature extending from low temperatures to high temperatures, particularly in the low temperature range, which may cause only rare occurrence of shrinkage spots, wrinkles, strains, longitudinal sinking, and other defects during heat shrinkage, and which may further have excellent break resistance.