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Resin-coated SN-plated steel sheet manufacturing method and manufacturing equipment

A manufacturing method and resin technology, applied in the field of resin-coated Sn-plated steel sheet, can solve the problem of insufficient corrosion resistance, and achieve the effect of less indentation and excellent corrosion resistance

Active Publication Date: 2020-10-09
NIPPON STEEL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] On the other hand, for cans filled with highly corrosive contents such as food cans, resin-coated TFS may not have sufficient corrosion resistance

Method used

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  • Resin-coated SN-plated steel sheet manufacturing method and manufacturing equipment
  • Resin-coated SN-plated steel sheet manufacturing method and manufacturing equipment
  • Resin-coated SN-plated steel sheet manufacturing method and manufacturing equipment

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Embodiment

[0185] Next, an Example and a comparative example are given, and this invention is demonstrated further concretely. However, these respective Examples do not limit the present invention.

[0186]

[0187] As the steel plate, a steel plate having a plate thickness of 0.20 mm and a surface roughness Ra of 0.30 μm was used. The size of the steel plate was 200 mm in width and 250 mm in length. In addition, as a steel plate, the composition used is C: 0.04%, Mn: 0.25%, Si: 0.02%, P: 0.05%, Al: 0.03%, the rest is Fe and unavoidable impurities, Rockwell surface hardness (HR30RT) 61 primary cold-rolled material.

[0188]

[0189] The following Sn plating of M1 to M5 was performed on the above-mentioned steel sheets. In addition, the Sn plating method in M1-M5 is to carry out cathodic electrolytic treatment in 5% sodium hydroxide aqueous solution to degrease the cold-rolled steel sheet, and then carry out pickling treatment in 5% sulfuric acid, and then wash it in a Ferrostan (F...

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Abstract

The resin-coated Sn-plated steel sheet of the present invention comprises: a steel sheet; and a Sn-plated layer formed on at least one surface of the above-mentioned steel sheet and containing 0.2 to 12.0 g / m in terms of the amount of metallic Sn 2 Sn; chemical conversion treatment layer, which is formed on the upper layer of the above-mentioned Sn plating layer, and the adhesion amount is 2.0~20.0mg / m 2 , containing 50 to 100% by mass of inorganic hydroxides and inorganic oxides in total; a resin cured coating layer formed on the upper layer of the above-mentioned chemical conversion treatment layer, using a rigid body vibrator type free attenuation vibration method at 150°C to 200°C The maximum value of the obtained logarithmic attenuation rate is below 0.15, and the adhesion amount is 0.10-5.00g / m 2 and a thermoplastic resin layer, which is formed on the upper layer of the cured resin coating layer, has an oriented crystal layer, and has a thickness of 5-50 μm.

Description

technical field [0001] The present invention relates to a resin-coated Sn-plated steel sheet, its manufacturing method, and manufacturing equipment. [0002] this application claims priority based on Japanese Patent Application No. 2015-202792 for which it applied in Japan on October 14, 2015, The content is used here. Background technique [0003] As cans for beverages, cans obtained by manufacturing tin-free steel sheets (hereinafter referred to as TFS) coated with resin (hereinafter referred to as resin-coated TFS) on steel sheets treated with electrolytic chromic acid are often used. [0004] On the other hand, for cans filled with highly corrosive contents such as cans for food, resin-coated TFS may have insufficient corrosion resistance. Therefore, as cans for foodstuffs, cans obtained by manufacturing a resin-coated Sn-plated steel sheet obtained by covering a Sn-plated steel sheet with a resin are used in many cases. [0005] One example of resin-coated TFS is resi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B15/08B29C65/44B32B27/36C23C28/00
CPCB32B27/36C23C28/00B29K2705/06B29K2705/12B32B27/08B32B15/20B32B2255/26B32B2307/732B32B15/18B32B2439/66B32B2264/102B32B15/09B32B2307/714B32B2255/06B32B7/06B32B2255/205C23C2222/20C23C22/34B29C66/71B29K2067/00
Inventor 门胁伸生岩切和史平田彰彦平井亚希子远藤智之
Owner NIPPON STEEL CORP