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. 01, 2025
Filed:
Mar. 18, 2020
Tosoh Corporation, Shunan, JP;
TOSOH CORPORATION, Shunan, JP;
Abstract
The purpose is to provide a resin composition and a film for lid material which excel in sealability and adhesiveness to plastic containers, especially containers made of polyethylene terephthalate, polylactic acid, polystyrene, or polypropylene, and are suitably usable as sealant layers of lid materials for containers. Provided is a resin composition including: an ethylene-vinyl acetate copolymer (A) by 60-95 parts by weight, the ethylene-vinyl acetate copolymer (A) having a vinyl acetate content (VA) of 3-13% by weight, and having a ratio Qw between a weight-average molecular weight (Mw) and a number-average molecular weight (Mn) of 1.5-4.5; and a tackifier resin (B) by 5-40 parts by weight, where a total amount of (A) and (B) is 100 parts by weight.