US 12,473,464 B2
Thermal adhesive laminated oriented film
Yoshitaka Tanaka, Inuyama (JP); Shigeyuki Watanabe, Otsu (JP); Nobuhiro Yoshimura, Otsu (JP); Ryo Umeki, Otsu (JP); Takafumi Masuda, Takasago (JP); and Daiki Funaoka, Nagoya (JP)
Assigned to TOYOBO CO., LTD., Osaka (JP)
Appl. No. 18/255,742
Filed by TOYOBO CO., LTD., Osaka (JP)
PCT Filed Nov. 11, 2021, PCT No. PCT/JP2021/041524
§ 371(c)(1), (2) Date Jun. 2, 2023,
PCT Pub. No. WO2022/137867, PCT Pub. Date Jun. 30, 2022.
Claims priority of application No. 2020-215181 (JP), filed on Dec. 24, 2020.
Prior Publication US 2024/0002700 A1, Jan. 4, 2024
Int. Cl. C09J 7/35 (2018.01); B32B 27/08 (2006.01); B32B 27/32 (2006.01); B32B 27/34 (2006.01)
CPC C09J 7/35 (2018.01) [B32B 27/08 (2013.01); B32B 27/32 (2013.01); B32B 27/34 (2013.01); B32B 2270/00 (2013.01); B32B 2307/30 (2013.01); B32B 2405/00 (2013.01); C09J 2301/124 (2020.08); C09J 2301/304 (2020.08); C09J 2301/312 (2020.08); C09J 2423/006 (2013.01); C09J 2477/006 (2013.01)] 15 Claims
 
1. A thermal adhesive laminated oriented film comprising:
a substrate layer comprising a resin composition containing 99.9 to 60% by mass of a polyamide resin or a polymethylpentene resin and 0.1 to 40% by mass of a modified polyolefin resin; and
a thermal adhesive layer containing a thermal adhesive polyolefin resin and provided on each of both surfaces of the substrate layer so as to be in direct contact therewith by coextrusion,
wherein the film, having a machine direction defined as an X axis, a transverse direction defined as a Y axis, and a thickness direction defined as a Z axis, is stretched and oriented in at least one direction of the X axis or the Y axis, and the film has a thermal deformation rate of 4% or less in both directions of the X axis and the Y axis when the film is treated in a thermostatic bath at 150° C. for 30 seconds.