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:
Apr. 28, 2015
Filed:
Jul. 23, 2013
Toyobo Co., Ltd., Osaka-shi, Osaka, JP;
Masayuki Haruta, Tsuruga, JP;
Yukinobu Mukoyama, Tsuruga, JP;
Toyobo Co., Ltd., Osaka, JP;
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 cmof the heat-shrinkable polyester-based film measured by the polarized ATR-FTIR method and the absorbancy (A2) at 1410 cmis 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.