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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 12370738 B1

PDFFull Text
Date of Patent:
Jul. 29, 2025

Filed:

Nov. 02, 2023

Battery packaging material, production method therefor, battery, and polyester film

Applicant:

Dai Nippon Printing Co., Ltd., Tokyo, JP;

Inventors:

Daisuke Yasuda, Tokyo, JP;

Rikiya Yamashita, Tokyo, JP;

Takanori Yamashita, Tokyo, JP;

Assignee:

DAI NIPPON PRINTING CO., LTD., Tokyo, JP;

Attorney:

Oliff PLC

Primary Examiner:

Vivian Chen

Int. Cl.
CPC ...
B29C 55/12 (2006.01); B32B 7/00 (2019.01); B32B 7/023 (2019.01); B32B 7/04 (2019.01); B32B 7/12 (2006.01); B32B 15/085 (2006.01); B32B 15/09 (2006.01); B32B 15/18 (2006.01); B32B 15/20 (2006.01); B32B 27/08 (2006.01); B32B 27/20 (2006.01); B32B 27/32 (2006.01); B32B 27/34 (2006.01); B32B 27/36 (2006.01); B32B 37/12 (2006.01); B32B 37/24 (2006.01); B65D 65/40 (2006.01); H01M 50/105 (2021.01); H01M 50/119 (2021.01); H01M 50/121 (2021.01); H01M 50/122 (2021.01); H01M 50/124 (2021.01); H01M 50/126 (2021.01); H01M 50/129 (2021.01); H01M 50/131 (2021.01); H01M 50/133 (2021.01); H01M 50/186 (2021.01); H01M 50/193 (2021.01);
U.S. Cl.
CPC ...
B29C 55/12 (2013.01); B32B 27/36 (2013.01); B65D 65/40 (2013.01); H01M 50/105 (2021.01); H01M 50/119 (2021.01); H01M 50/121 (2021.01); H01M 50/122 (2021.01); H01M 50/124 (2021.01); H01M 50/126 (2021.01); H01M 50/133 (2021.01); H01M 50/186 (2021.01); H01M 50/193 (2021.01); B32B 7/00 (2013.01); B32B 7/023 (2019.01); B32B 7/04 (2013.01); B32B 7/12 (2013.01); B32B 15/085 (2013.01); B32B 15/09 (2013.01); B32B 15/18 (2013.01); B32B 15/20 (2013.01); B32B 27/08 (2013.01); B32B 27/20 (2013.01); B32B 27/32 (2013.01); B32B 27/34 (2013.01); B32B 37/1207 (2013.01); B32B 2037/1215 (2013.01); B32B 2037/246 (2013.01); B32B 2250/03 (2013.01); B32B 2307/31 (2013.01); B32B 2307/40 (2013.01); B32B 2307/418 (2013.01); B32B 2307/42 (2013.01); B32B 2307/514 (2013.01); B32B 2307/518 (2013.01); B32B 2307/732 (2013.01); B32B 2307/734 (2013.01); B32B 2307/738 (2013.01); B32B 2309/105 (2013.01); B32B 2311/24 (2013.01); B32B 2311/30 (2013.01); B32B 2367/00 (2013.01); B32B 2457/10 (2013.01); B32B 2553/00 (2013.01); B65D 2585/86 (2013.01); H01M 50/129 (2021.01); H01M 50/131 (2021.01); Y10T 428/1334 (2015.01); Y10T 428/1341 (2015.01); Y10T 428/1352 (2015.01); Y10T 428/1355 (2015.01); Y10T 428/1359 (2015.01); Y10T 428/1379 (2015.01); Y10T 428/1383 (2015.01); Y10T 428/2813 (2015.01); Y10T 428/2817 (2015.01); Y10T 428/2826 (2015.01); Y10T 428/31681 (2015.04); Y10T 428/31786 (2015.04);
Abstract

A battery packaging material including a laminate that is provided with a barrier layer, a heat-fusible resin layer positioned on one surface side of the barrier layer, and a polyester film positioned on the other surface side of the barrier layer. When the infrared absorption spectrum on the surface of the polyester film in 18 directions at intervals of 10° from 0° to 180° is obtained using the total reflection method of Fourier transform infrared spectroscopy, the ratio (surface orientation degree, Y/Y) of the maximum value Yand the minimum value Yof the ratio (Y/Y) of the absorption peak intensity Yin 1340 cmand the absorption peak intensity Yin 1410 cmin the infrared absorption spectrum is in the range of 1.4-2.7.

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