US 12,351,364 B2
Seamless can and resin-coated metal sheet for forming seamless can
Yuto Komichi, Yokohama (JP); and Nobuhiko Nagai, Yokohama (JP)
Assigned to TOYO SEIKAN CO., LTD., Tokyo (JP)
Appl. No. 17/437,895
Filed by TOYO SEIKAN CO., LTD., Tokyo (JP)
PCT Filed Feb. 27, 2020, PCT No. PCT/JP2020/008087
§ 371(c)(1), (2) Date Sep. 10, 2021,
PCT Pub. No. WO2020/184200, PCT Pub. Date Sep. 17, 2020.
Claims priority of application No. 2019-046658 (JP), filed on Mar. 14, 2019; and application No. 2019-109480 (JP), filed on Jun. 12, 2019.
Prior Publication US 2022/0169421 A1, Jun. 2, 2022
Int. Cl. B65D 25/14 (2006.01); B32B 15/08 (2006.01); B32B 15/09 (2006.01); B65D 17/00 (2006.01); B65D 25/34 (2006.01); C09D 167/02 (2006.01)
CPC B65D 25/14 (2013.01) [B32B 15/09 (2013.01); B65D 17/02 (2013.01); B65D 25/34 (2013.01); B32B 15/08 (2013.01); B65D 2203/00 (2013.01); C09D 167/02 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A seamless can comprising a bottom section and a body section, the seamless can having a thermoplastic resin coating that is formed over a polyester-based paint film on an outer surface side of the can,
the polyester-based paint film comprising a polyester-based paint composition which contains:
a colorant in an amount of 20 parts by mass or less relative to 100 parts by mass of a total resin solid content, and
a curing agent in an amount of 5 to 43 parts by mass relative to 100 parts by mass of a polyester resin,
wherein an entire outer surface of the can, which includes the bottom section, is colored, and
the polyester-based paint composition consists of a polyester resin, the colorant, the curing agent, a curing catalyst, and an organic solvent.