US 12,221,518 B2
Biaxially stretched polyamide film and laminate film
Takuro Endo, Inuyama (JP); Kosuke Hama, Inuyama (JP); Takamichi Goto, Inuyama (JP); and Shigetomo Yamamoto, Osaka (JP)
Assigned to TOYOBO CO., LTD., Osaka (JP)
Appl. No. 17/431,312
Filed by TOYOBO CO., LTD., Osaka (JP)
PCT Filed Jan. 24, 2020, PCT No. PCT/JP2020/002534
§ 371(c)(1), (2) Date Aug. 16, 2021,
PCT Pub. No. WO2020/170714, PCT Pub. Date Aug. 27, 2020.
Claims priority of application No. 2019-026446 (JP), filed on Feb. 18, 2019; application No. 2019-026447 (JP), filed on Feb. 18, 2019; application No. 2019-190107 (JP), filed on Oct. 17, 2019; and application No. 2019-190108 (JP), filed on Oct. 17, 2019.
Prior Publication US 2022/0135752 A1, May 5, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. B32B 1/00 (2024.01); B32B 27/08 (2006.01); B32B 27/34 (2006.01); B65D 65/40 (2006.01); C08J 5/18 (2006.01); C08L 77/02 (2006.01)
CPC C08J 5/18 (2013.01) [B32B 1/00 (2013.01); B32B 27/08 (2013.01); B32B 27/34 (2013.01); B65D 65/40 (2013.01); C08L 77/02 (2013.01); B32B 2270/00 (2013.01); B32B 2307/518 (2013.01); B32B 2439/46 (2013.01); C08J 2377/02 (2013.01); C08J 2377/06 (2013.01); C08J 2477/08 (2013.01); C08L 2205/02 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A biaxially stretched polyamide film, comprising
A layer: a base material layer and
B layer: a surface layer,
wherein
the B layer is laminated on at least one surface of the A layer,
the A layer comprises 99 to 70 mass % of a Polyamide 6 resin and 1 to 30 mass % of a polyamide resin, wherein at least a part of a raw material of the polyamide resin is derived from a biomass, and
the B layer comprises 70 mass % or more of a Polyamide 6 resin and 5 to 10 mass % of Polyamide MXD6 resin.