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:
Dec. 12, 2023
Filed:
Mar. 19, 2019
Mitsui Chemicals Tohcello, Inc., Tokyo, JP;
Kouji Igarashi, Nordrhein-Westfalen, DE;
Jin Kinoshita, Nagoya, JP;
Hiroyoshi Kurihara, Nagoya, JP;
Toru Miura, Nagoya, JP;
MITSUI CHEMICALS TOHCELLO, INC., Tokyo, JP;
Abstract
An adhesive film includes a base material layer; an adhesive resin layer (A) provided on a first surface side of the base material layer; and an adhesive resin layer (B) provided on a second surface side of the base material layer and in which an adhesive force is decreased by an external stimulus, in which, as measured by method 1, an integrated tacking force value (F) of the adhesive resin layer (B) is 1.0 gf/sec or more at a test speed of 2.5 mm/min and a test temperature of 130° C., and an integrated tacking force value (F) of the adhesive resin layer (B) is 7.0 gf/sec or more at a test speed of 30 mm/min and a test temperature of 130° C.