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:
Mar. 11, 2025
Filed:
Apr. 25, 2019
Mitsubishi Gas Chemical Company, Inc., Tokyo, JP;
Masaki Yamanaka, Hiratsuka, JP;
Takafumi Oda, Hiratsuka, JP;
Mitsubishi Gas Chemical Company, Inc., Tokyo, JP;
Abstract
A stretched film, which has excellent impact resistance and oxygen barrier properties and which suppresses the number of pinholes after being bent, a packaging material using the same, and a method for producing the stretched film are provided. The stretched film contains from 80 to 5 parts by mass of a polyamide resin (B) relative to from 20 to 95 parts by mass of a polyamide resin (A), the polyamide resin (A) being an aliphatic polyamide resin, the polyamide resin (B) containing a constituent unit derived from a diamine and a constituent unit derived from a dicarboxylic acid, 70 mol % or more of the constituent unit derived from a diamine being derived from xylylenediamine, from 30 to 70 mol % of the constituent unit derived from a dicarboxylic acid being derived from an α,ω-linear aliphatic dicarboxylic acid having from 4 to 8 carbons, and from 70 to 30 mol % of the constituent unit derived from a dicarboxylic acid being derived from isophthalic acid provided that a total of the constituent units derived from a dicarboxylic acid is not more than 100 mol %.