MUMBAI, India, Aug. 10 -- Intellectual Property India has published a patent application (202647091765 A) filed by Toyobo Co. , Ltd. on July 29, 2026, for Laminate Using Biaxially Oriented Polypropylene Film, Packaging Material, And Package.
Inventors include Yamazaki,atsushi; Azuma,shuhei; Kanaya,atsushi; and Imai,toru.
The application for the patent was published on July 31, 2026, under issue no. 31/2026.
Abstract: Provided is a laminate comprising: a biaxially oriented polypropylene film having a surface layer B comprising a polypropylene-based resin composition on one surface of a base material layer A comprising a polypropylene-based resin composition; and a gas barrier layer provided on the surface layer B, the laminate satisfying the following (1) to (5). (1) The Martens hardness of the surface layer B is 248 N/mm2 or less. (2) The wetting tension of the surface layer B is 36 mN/m or greater. (3) The sum of the thermal shrinkage rate in the longitudinal direction of the biaxially oriented polypropylene film at 150ºC and the thermal shrinkage rate in the width direction thereof at 150ºC is 0.0-25.0%. (4) The surface layer B contains an anti-blocking agent, and the anti-blocking agent has a fall-off rate of 10% or less. (5) The three- dimensional average roughness SRa of the surface layer B is 10 nm or greater.
Disclaimer: Curated by HT Syndication.
