	US 12,466,974 B2
	Resin coated metal sheet, container, and method of evaluation
Tomonari Hiraguchi, Tokyo (JP); Junichi Kitagawa, Tokyo (JP); Yuya Kawai, Tokyo (JP); Soichi Fujimoto, Tokyo (JP); and Yasuhide Oshima, Tokyo (JP)
Assigned to JFE STEEL CORPORATION, Tokyo (JP)
Appl. No. 17/627,201
Filed by JFE STEEL CORPORATION, Tokyo (JP)
PCT Filed Jul. 31, 2020, PCT No. PCT/JP2020/029382 § 371(c)(1), (2) Date Jan. 14, 2022, PCT Pub. No. WO2021/020548, PCT Pub. Date Feb. 4, 2021.
Claims priority of application No. 2019-140453 (JP), filed on Jul. 31, 2019.
Prior Publication US 2022/0315794 A1, Oct. 6, 2022
Int. Cl. C09D 167/03 (2006.01); B32B 15/08 (2006.01); B32B 15/09 (2006.01); B65D 65/40 (2006.01); C09D 167/02 (2006.01)

CPC C09D 167/03 (2013.01) [B32B 15/08 (2013.01); B32B 15/09 (2013.01); B32B 2363/00 (2013.01); B32B 2439/00 (2013.01); B65D 65/40 (2013.01); C09D 167/02 (2013.01); Y10T 428/31681 (2015.04); Y10T 428/31786 (2015.04)]

2 Claims

1. A resin coated metal sheet comprising

a metal sheet, and

a biaxially stretched polyester resin layer formed on at least one face of the metal sheet,

wherein

the resin layer contains at least 95 wt % polyethylene terephthalate (PET) and in the PET, 90 mol % or more of structural units are ethylene terephthalate units,

a movable amorphous amount of the resin layer measured by a temperature modulated differential scanning calorimeter being 30% or more and 46% or less, and

an intensity ratio I_1,096/I_1,119between intensity (I_1,096) of a peak attributable to a trans structure of methylene groups in PET around 1,096 cm⁻¹determined from laser Raman spectroscopic analysis measured by making a plane of polarization of linearly polarized laser light incident on a thickness direction section of the resin coating layer perpendicularly to a thickness direction and intensity (I_1,119) of a peak attributable to a gauche structure of methylene groups in PET around 1,119 cm⁻¹determined from the laser Raman spectroscopic analysis being 1.1 or more and less than 1.5 at a position with a distance of 1 μm from the metal sheet.