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:
Apr. 20, 2021
Filed:
Feb. 14, 2018
Oji Holdings Corporation, Tokyo, JP;
OJI HOLDINGS CORPORATION, Tokyo, JP;
Abstract
The present invention provides a release film having good releasability such that a release force is light, and also suppresses silicone transfer from the film surface. The present invention relates to a release film having a surface layer on a substrate layer, in which a main component of the surface layer is a resin component, the resin component contains a modified acrylic-based resin having a polysiloxane component, and a relationship between a ratio Mof a content of silicon to a content of all elements existing on an outermost surface of the surface layer and a ratio Mof a content of silicon to a content of all elements existing at a position in a depth of 10 nm from the outermost surface of the surface layer vertically toward the substrate layer satisfies (i) 5≤M/M≤30 or (ii) M=0, and 8.5≤M≤30.