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:
Sep. 23, 2025
Filed:
Dec. 16, 2021
Toyobo Co., Ltd., Osaka, JP;
TOYOBO CO., LTD., Osaka, JP;
Abstract
Provided is a multilayer body having favorable thermal dimensional stability and capable of producing a food-packaging bag where without providing any perforations or guiding lines through laser half-cutting, a resistance at opening by tearing is low, and only a small extent of parting occurs; and a step is formed between opening ends on the front and back sides to be easily opened and contents can easily be taken out therefrom. A multilayer body having one or more types of base material films; and a polyolefin-based resin sealant film made from a polyolefin-based resin composition containing a propylene-α-olefin random copolymer, wherein 1) the base material films have orientation angles, a sum of absolute values of which is 25° to 85°, 2) the sealant film has a piercing strength of 5.0 to 15.0 N, and 3) the sealant film has an orientation coefficient ΔNx, in a longitudinal direction, of 0.0150 to 0.0230.