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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 11512233 B1

PDFFull Text
Date of Patent:
Nov. 29, 2022

Filed:

Mar. 20, 2019

Protective film

Applicant:

Sumitomo Bakelite Co., Ltd., Shinagawa-ku, JP;

Inventors:

Kazufusa Onodera, Shinagawa-ku, JP;

Hironari Inaba, Shinagawa-ku, JP;

Assignee:

SUMITOMO BAKELITE CO., LTD., Shinagawa-ku, JP;

Attorney:

Oblon, McClelland, Maier & Neustadt, L.L.P.

Primary Examiner:

Sheeba Ahmed

Int. Cl.
CPC ...
C09J 7/24 (2018.01); C09J 123/06 (2006.01); C09J 133/08 (2006.01); C09J 133/10 (2006.01); C09J 153/02 (2006.01); C09J 123/12 (2006.01); C09J 123/04 (2006.01); B29C 48/08 (2019.01); B29C 48/07 (2019.01); B29C 48/21 (2019.01); B29C 51/14 (2006.01); G02B 1/14 (2015.01); G02B 5/30 (2006.01); B32B 7/12 (2006.01); B32B 23/08 (2006.01); B32B 27/08 (2006.01); B32B 27/34 (2006.01); C09J 7/38 (2018.01); C09J 7/29 (2018.01); B32B 27/36 (2006.01);
U.S. Cl.
CPC ...
C09J 7/385 (2018.01); B32B 7/12 (2013.01); B32B 23/08 (2013.01); B32B 27/08 (2013.01); B32B 27/34 (2013.01); B32B 27/365 (2013.01); C09J 7/243 (2018.01); C09J 7/29 (2018.01); C09J 123/06 (2013.01); C09J 133/08 (2013.01); C09J 133/10 (2013.01); C09J 153/02 (2013.01); G02B 1/14 (2015.01); C09J 2423/046 (2013.01); C09J 2423/106 (2013.01); C09J 2433/00 (2013.01); C09J 2453/00 (2013.01);
Abstract

A protective film 10 of the present invention includes a base material layer and a pressure sensitive adhesive layer, and is used by being attached to a resin substrateat the time of performing heat bending on the resin substrateThe pressure sensitive adhesive layer contains a polyolefin having a melting point of lower than 125° C. The base material layer has a first layer which contains a polyolefin having a melting point of 150° C. or higher, and a second layer which contains an adhesive resin. In a case of heating the protective filmhaving such a configuration, in a state of being interposed between two attaching substrates which are formed of polycarbonate, at 145° C. for 30 minutes, peeling off one attaching substrate on the side of the pressure sensitive adhesive layer at 25° C., and then viewing a surface of the one attaching substrate in a plan view, a residual ratio of an area where the pressure sensitive adhesive layer remains is 5% or less.

Find Patent Forward Citations

Onodera, Kazufusa. (2022). Protective film (U.S. Patent No. 11512233). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11512233

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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