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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 12043775 B1

PDFFull Text
Date of Patent:
Jul. 23, 2024

Filed:

Aug. 28, 2017

Adhesive film

Applicant:

Riken Technos Corporation, Tokyo, JP;

Inventors:

Hitomi Inomata, Tokyo, JP;

Takio Wakugawa, Tokyo, JP;

Assignee:

RIKEN TECHNOS CORPORATION, , JP;

Attorneys:

Bracewell LLP

Brad Y. Chin

Primary Examiner:

Scott R Walshon

Int. Cl.
CPC ...
C09J 7/38 (2018.01); B32B 7/12 (2006.01); B32B 27/00 (2006.01); B32B 27/30 (2006.01); C09J 7/24 (2018.01); C09J 133/00 (2006.01); C09J 133/10 (2006.01); C09J 175/04 (2006.01);
U.S. Cl.
CPC ...
C09J 7/38 (2018.01); B32B 7/12 (2013.01); B32B 27/00 (2013.01); B32B 27/30 (2013.01); B32B 27/304 (2013.01); C09J 7/245 (2018.01); C09J 133/00 (2013.01); C09J 133/10 (2013.01); C09J 175/04 (2013.01); B32B 2333/12 (2013.01); B32B 2607/02 (2013.01);
Abstract

In one embodiment, there is provided an adhesive film having (α) a layer of polyvinyl chloride resin film and (β) an adhesive layer in the stated order from the surface-layer side, where the (β) adhesive layer is formed from an adhesive including: (A) 100 parts by mass of an acrylic polymer that satisfies the features (a1) and (a2), specifically (a1) an acid value of 18-27 mg KOH/g, and (a2) a mass-average molecular weight of 500,000 to 1,000,000; and (B) 0.1-3 parts by mass of a compound having two or more isocyanate groups per molecule. In another embodiment, there is provided an adhesive film having (α) a layer of polyvinyl chloride resin film and (β) an adhesive layer in the stated order from the surface-layer side, where the (β) adhesive layer has a tackiness of 12-25 N at a surface temperature of 5° C. and has a tackiness of 12-23 N at a surface temperature of 35° C.

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