US 11,655,364 B2
Thermoplastic resin film, metal plate coated with thermoplastic resin, and metal container coated with thermoplastic resin
Tomoyasu Takenaga, Kudamatsu (JP); Kazuhiro Nishida, Kudamatsu (JP); Satoshi Kawamura, Kudamatsu (JP); Kousuke Sasaki, Kudamatsu (JP); Shuhei Hiromori, Yokohama (JP); Kenji Yanada, Yokohama (JP); and Mitsuhide Aihara, Yokohama (JP)
Assigned to TOYO SEIKAN CO., LTD., Tokyo (JP); and TOYO KOHAN CO., LTD., Tokyo (JP)
Appl. No. 17/57,960
Filed by TOYO KOHAN CO., LTD., Tokyo (JP); and TOYO SEIKAN CO., LTD., Tokyo (JP)
PCT Filed May 21, 2019, PCT No. PCT/JP2019/020033
§ 371(c)(1), (2) Date Nov. 23, 2020,
PCT Pub. No. WO2019/225574, PCT Pub. Date Nov. 28, 2019.
Claims priority of application No. JP2018-099226 (JP), filed on May 23, 2018.
Prior Publication US 2021/0189117 A1, Jun. 24, 2021
Int. Cl. C08L 67/03 (2006.01); B32B 15/09 (2006.01); B32B 27/32 (2006.01); B32B 27/36 (2006.01); C08L 23/06 (2006.01); C08L 23/12 (2006.01); C08L 23/16 (2006.01); C08L 33/08 (2006.01); C08L 33/10 (2006.01)
CPC C08L 67/03 (2013.01) [B32B 15/09 (2013.01); B32B 27/32 (2013.01); B32B 27/36 (2013.01); C08L 23/06 (2013.01); C08L 23/12 (2013.01); C08L 23/16 (2013.01); C08L 33/08 (2013.01); C08L 33/10 (2013.01); B32B 2262/0207 (2013.01); B32B 2262/0223 (2013.01); B32B 2262/0253 (2013.01); B32B 2264/0214 (2013.01); B32B 2264/301 (2020.08); B32B 2264/302 (2020.08); B32B 2311/24 (2013.01); B32B 2323/04 (2013.01); B32B 2323/10 (2013.01); B32B 2367/00 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A thermoplastic resin-coated metal sheet comprising:
a metal sheet and a thermoplastic resin film laminated on at least one side of the metal sheet,
wherein the thermoplastic resin film contains 70 to 97 wt % of a thermoplastic polyester resin component and 3 to 30 wt % of a polyolefin resin component,
wherein the polyolefin resin component contains one or more polyolefin resins selected from a group consisting of nonpolar polyolefin resins and polyolefin resins having ester-containing functional groups in side chains of the groups,
wherein the polyolefin resin component is dispersed, in the thermoplastic polyester resin component, in a fibrous form having an average length of 5 to 300 μm in a machine direction of the film, an average length of 0.2 to 5 μm in a thickness direction of the film, and an aspect ratio of 8 or greater, and
wherein the aspect ratio is defined as “a/b”, with “a” representing the average length in the machine direction of the film, and “b” representing the average length in the thickness direction of the film.