IDiyas

For the Inventor, By the Inventor

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.:

US 12447726 B1

PDFFull Text
Date of Patent:
Oct. 21, 2025

Filed:

Sep. 08, 2021

Cavity-containing polyester film

Applicant:

Toyobo Co., Ltd., Osaka, JP;

Inventors:

Mei Matsumura, Tsuruga, JP;

Shotaro Nishio, Tsuruga, JP;

Akira Shimizu, Tsuruga, JP;

Assignee:

TOYOBO CO., LTD., Osaka, JP;

Attorney:

WHDA, LLP

Primary Examiner:

Chinessa T Golden

Int. Cl.
CPC ...
B32B 27/36 (2006.01); B32B 27/08 (2006.01); B32B 27/20 (2006.01); C08K 3/22 (2006.01); C08L 67/02 (2006.01); C09J 7/29 (2018.01); G09F 3/02 (2006.01);
U.S. Cl.
CPC ...
B32B 27/36 (2013.01); B32B 27/08 (2013.01); B32B 27/205 (2013.01); C08K 3/22 (2013.01); C08L 67/02 (2013.01); C09J 7/29 (2018.01); G09F 3/02 (2013.01); B32B 2250/03 (2013.01); B32B 2250/244 (2013.01); B32B 2250/40 (2013.01); B32B 2264/1022 (2020.08); B32B 2264/303 (2020.08); B32B 2272/00 (2013.01); B32B 2307/4023 (2013.01); B32B 2307/54 (2013.01); B32B 2307/72 (2013.01); B32B 2519/00 (2013.01); C08K 2003/2237 (2013.01); G09F 2003/0229 (2013.01); G09F 2003/0257 (2013.01);
Abstract

[Problem] To provide a cavity-containing polyester film which exhibits excellent concealability, degree of whiteness and printability, and which is still free from the occurrence of a wrinkle, distortion and the like in cases where, for example, the cavity-containing polyester film is used for a roll label, and a label is delivered therefrom or wound around a product. [Solution] A cavity-containing polyester film which comprises a layer A that internally contains a cavity, and layers B that are arranged on both surfaces of the layer A, wherein: the layer A is formed of a composition A that contains a polyester resin A and a polypropylene resin; the layers B are formed of a composition B that contains inorganic particles and a polyester resin B; and the amount of self-weight deflection of the film is from 60 mm to 100 mm at least in one direction.

Find Patent Forward Citations

Loading…