LAMINATED METAL SHEET AND CAN CONTAINER FOR FOOD
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United States of America Patent
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Issued Date -
May 7, 2015
app pub date -
Apr 1, 2013
filing date -
Apr 19, 2012
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Abandoned
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Abstract
A laminated metal sheet includes a metal sheet, a first polyester resin layer, and a second polyester resin layer, and the first polyester resin layer contains 30% by mass to 60% by mass of: polyethylene terephthalate; or copolymerized polyethylene terephthalate having a copolymerization component content of less than 6 mol %; and 40% by mass to 70% by mass of polybutylene terephthalate, the second polyester resin layer is copolymerized polyethylene terephthalate having a copolymerization component content of less than 14 mol %, residual orientations of the first and second polyester resin layers are less than 20%, and film thicknesses X and Y of the first and the second polyester resin layers before forming satisfy predetermined conditions.
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