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. 06, 2026
Filed:
Nov. 15, 2021
Bonset America Corporation, Browns Summit, NC (US);
C.i. Takiron Corporation, Osaka, JP;
Bonset Latin America S.a., Barros Blancos Canelones, UY;
Hideaki Takahashi, Browns Summit, NC (US);
Ebonii Nicole Neal, Browns Summit, NC (US);
Victoria Marie Moncada Meeks, Browns Summit, NC (US);
Bonset America Corporation, Browns Summit, NC (US);
C.I. TAKIRON Corporation, Osaka, JP;
Abstract
The present invention relates to a heat-shrinkable polyester film having low thermal shrink stress for wall thickness reduction of PET bottles without inhibiting the recyclability of PET bottles. The provided is a heat-shrinkable polyester film derived from a polyester resin as reaction product between a polyvalent carboxylic acid and a polyalcohol, wherein the film has the following characteristics (A) to (D). (A) The melting point measured by DSC of the polyester resin is within 190 to 255° C. (B) to (D) Under predetermined conditions, the heat shrinkage ratio in the main shrinkage direction is within 45 to 70%, the heat shrinkage ratio in the direction orthogonally intersecting the main shrinkage direction is within −1 to 6%, and the thermal shrink stress in the main shrinkage direction is 16 MPa or less.