Jfe Steel Corporation

Yuya Kawai

Yasuhide Oshima

Junichi Kitagawa

Katsumi Kojima

Tomonari Hiraguchi

Soichi Fujimoto

A resin-coated metal sheet for a container includes: a metal sheet; a first resin coating layer provided on an inner face of the metal sheet after forming; and a second resin coating layer provided on an outer face of the metal sheet after forming, wherein a polar component of surface free energy of the second resin coating layer is 3.5 mN/m or more, after the second resin coating layer is subjected to heat treatment at a melting point of the second resin coating layer plus 8° C. for 2 minutes, and a static friction coefficient of the second resin coating layer, at 145° C., is 0.16 or less.

Resin-coated metal sheet for container

A resin coated metal sheet includes: a metal sheet; and a resin layer formed on at least one face of the metal sheet. A movable amorphous amount of the resin layer measured by a temperature modulated differential scanning calorimeter being 30% to 46%. An intensity ratio I/Ibetween intensity (I) of a peak attributable to a trans structure of methylene groups in polyethylene terephthalate (PET) around 1,096 cmdetermined 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) of a peak attributable to a gauche structure of methylene groups in PET around 1,119 cmdetermined 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.

Resin coated metal sheet, container, and method of evaluation

A resin coated metal sheet includes: a metal sheet; and a resin layer configured to coat at least one face of the metal sheet. An indentation modulus of the resin layer on a side adhered to the metal sheet is 100 MPa to 300 MPa, and a melting point of the resin layer is 210° C. to 270° C.

Resin coated metal sheet and container

A resin coated metal sheet for container includes a polyester resin coating layer in which 90 mol % or more of structural units are ethylene terephthalate units. A half-value width of a peak attributable to C&#x2550;O stretching vibration around 1,730 cmdetermined 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 polyester resin coating layer perpendicularly to a thickness direction is 18.5 cmto 22.0 cmat a position with a thickness of 1.0 &#x3bc;m from a metal sheet side of the polyester resin coating layer and is greater than 17.0 cmand 18.5 cmor less at a position with a thickness of 1.0 &#x3bc;m from a surface side of the polyester resin coating layer.

Resin coated metal sheet for container

A resin-coated metal sheet for a container includes: a metal sheet; a first resin coating layer provided on an inner face of the metal sheet after forming; and a second resin coating layer provided on an outer face of the metal sheet after forming, the second resin coating layer containing: polyester resin having a melting point of 230&#xb0; C. to 254&#xb0; C. as a main component; and a lubricant component, a melting point of the lubricant component being 80&#xb0; C. to 230&#xb0; C., an average particle diameter of the lubricant component present on a surface of the second resin coating layer being 17.0 nm or less.

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Tokyo, Japan

Yuya Kawai