US 12,122,122 B2
Resin-coated metallic plate, and metallic can produced by processing said resin- coated metallic plate
Yuuto Ooshima, Kudamatsu (JP); Masami Suenaga, Kudamatsu (JP); Satoshi Kawamura, Kudamatsu (JP); Yuji Funagi, Yokohama (JP); Shiori Adachi, Yokohama (JP); Shigeya Takahashi, Yokohama (JP); and Yasuhiro Yukawa, Yokohama (JP)
Assigned to TOYO SEIKAN CO., LTD., Tokyo (JP); and TOYO KOHAN CO., LTD., Tokyo (JP)
Appl. No. 16/628,143
Filed by TOYO KOHAN CO., LTD., Tokyo (JP); and TOYO SEIKAN CO., LTD., Tokyo (JP)
PCT Filed Jun. 23, 2018, PCT No. PCT/JP2018/023908
§ 371(c)(1), (2) Date Jan. 2, 2020,
PCT Pub. No. WO2019/009108, PCT Pub. Date Jan. 10, 2019.
Claims priority of application No. 2017-132189 (JP), filed on Jul. 5, 2017.
Prior Publication US 2020/0122431 A1, Apr. 23, 2020
Int. Cl. B32B 15/09 (2006.01); B32B 1/00 (2006.01); B32B 15/20 (2006.01); B32B 27/08 (2006.01); B32B 27/36 (2006.01); B65D 1/16 (2006.01); B65D 25/34 (2006.01)
CPC B32B 15/09 (2013.01) [B32B 1/00 (2013.01); B32B 15/20 (2013.01); B32B 27/08 (2013.01); B32B 27/36 (2013.01); B65D 1/165 (2013.01); B65D 25/34 (2013.01); B32B 2270/00 (2013.01); B32B 2439/66 (2013.01); B32B 2439/70 (2013.01); Y10T 428/1352 (2015.01); Y10T 428/1355 (2015.01)] 9 Claims
OG exemplary drawing
 
1. A resin-coated metal sheet comprising:
a metal sheet;
a two-layer resin film including a resin layer (A) disposed on at least one side of the metal sheet; and
a resin layer (B) disposed between the resin layer (A) and the metal sheet, wherein
the resin layer (A) contains 50 to 80 wt % of a polyethylene terephthalate based resin (I) and 20 to 50 wt % of a polybutylene terephthalate based resin (II),
the resin layer (B) contains 50 to 80 wt % of a polyethylene terephthalate based resin (III) and 20 to 50 wt % of the polybutylene terephthalate based resin (II),
both the polyethylene terephthalate based resin (I) and the polyethylene terephthalate based resin (III) contain isophthalic acid (IA), the resin layer (B) is higher than the resin layer (A) in crystallization rate, and
the polyethylene terephthalate based resin (I) has a melting point of not lower than 210° C. but not higher than 230° C., the polybutylene terephthalate based resin (II) has a melting point of not lower than 215° C. but not higher than 225° C., and the polyethylene terephthalate based resin (III) has a melting point of higher than 230° C. but not higher than 250° C., and
the melting point of the polyethylene terephthalate based resin (III) is 3° C. or more higher than the melting point of the polyethylene terephthalate based resin (I).