Jfe Steel Corporation

Tomonari Hiraguchi

Yasuhide Oshima

Katsumi Kojima

Yuya Kawai

Soichi Fujimoto

Junichi Kitagawa

Norihiko Nakamura

Hiroki Nakamaru

Reiko Sugihara

Nobusuke Kariya

Hayato Saito

Takumi Tanaka

Makoto Aratani

Toshihiro Kikuchi

Fumio Aoki

Masami Tsujimoto

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 laminated metal sheet for a metal container lid includes a polyester resin layer formed on a metal sheet. The polyester resin layer is composed of an A and a B layer, wherein the melting point of the A layer is lower than the melting point of the B layer by 20&#xb0; C. or more, the A layer includes a molten layer where the value of the ratio of a peak intensity Ito a peak intensity Iis 1.5 or less, the B layer includes an orientation layer where the value of the ratio of the peak intensity Ito the peak intensity Iis 3.0 or more, the thickness of the A layer is within the range from 5 &#x3bc;m or more to less than 30 &#x3bc;m, and the thickness of the B layer is within the range from 0.5 &#x3bc;m or more to less than 6.0 &#x3bc;m.

Laminated metal sheet for metal container lid and method for manufacturing the same

A resin-coated metal sheet for a container, the metal sheet including: a first resin coat layer provided on a first surface of the metal sheet; a second resin coat layer provided on a second surface of the metal sheet, wherein each of the first and the second resin coat layers is composed mainly of a polyester resin having a melting point of 230&#xb0; C. to 254&#xb0; C., and the first resin coat layer, in a state that the resin coat layers coat the metal sheet, is formed of a resin material having: an arithmetic average roughness (Ra) of 0.10 &#x3bc;m to 1.0 &#x3bc;m; a crystallization temperature of 110&#xb0; C. to 160&#xb0; C.; and a water contact angle of 55 degrees to 80 degrees in a state that the resin coat layers have been heated at 240&#xb0; C. for 90 seconds after the resin coat layers coat the metal sheet.

Resin-coated metal sheet for container

Provided are a steel sheet, having sufficient strength and formability regardless of reduction of thickness, for crown caps; a method for manufacturing the same; and a crown cap. The steel sheet for crown caps has a composition containing C: 0.0010% to less than 0.0050%, Si: 0.10% or less, Mn: 0.05% to less than 0.50%, P: 0.050% or less, S: 0.050% or less, Al: more than 0.002% to less than 0.070%, N: less than 0.0040%, and B: 0.0005% to 0.0020% on a mass basis, the balance being Fe and inevitable impurities, and also has a yield strength of 500 MPa or more in a rolling direction, an average Lankford value (r) of 1.1 or more, and an in-plane anisotropy (&#x394;r) of Lankford value of &#x2212;0.3 to 0.3.

Growing community of inventors

Tokyo, Japan

Tomonari Hiraguchi