Laminated steel having extremely low interface bubble rate and method for manufacturing same

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United States of America Patent

PATENT NO 11760064
APP PUB NO 20200391481A1
SERIAL NO

16771933

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Abstract

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Laminated steel having a low interface bubble rate, comprising: a substrate with a surface roughness of 0.15-0.25 μm and a modified flexible polyester film thermally laminated onto the surface of the substrate. The modified flexible polyester film is obtained by copolymerization modification of ethylene terephthalate with a low-molecular-weight aliphatic polyester. A method for manufacturing the laminated steel having an extremely low interface bubble rate, comprising the steps of: (1) preheating and then heating the substrate; (2) uncoiling the modified flexible polyester film at room temperature, and then thermally laminating same onto the substrate; and (3) cooling and squeeze-drying. The laminated steel having a low interface bubble rate is made of the substrate with a low surface roughness and the modified flexible polyester thermally laminated onto the surface of the substrate, so that the laminated steel has the low interface bubble rate, high product surface quality, excellent adhesion property, and is applicable for forming into deep-drawn containers.

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Patent Owner(s)

  • BAOSHAN IRON & STEEL CO., LTD.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chen, Hongxing Shanghai, CN 10 37
Wang, Zhangwei Shanghai, CN 5 13
Wei, Junsheng Shanghai, CN 3 0
Xie, Long Shanghai, CN 13 3

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