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AssigneeToyo Seikan Group Holdings, Ltd.
InventorsTakuya KASHIWAKURA, Hiromi YAMAMOTO, Arata SAKURAGI, Nan ZHANG
Estimating the term…
A method for producing a drawn/ironed can, including drawing and ironing a coated metal sheet, the coated metal sheet having an inner surface coating film at least on a surface to be a can inner surface, and a can obtainable by the method. A glass transition temperature (Tg) of a polyester resin contained in the inner surface coating film is 55° C. or higher, an ironing rate in the drawing and ironing is 40% or greater, and a processing speed during ironing in the drawing and ironing is 2000 mm/sec or higher. Thus, even in a case where a coated metal sheet having a coating film with excellent flavor sorption resistance and contains a polyester resin having a high glass transition temperature as a main component is used, occurrence of a coating film defect during molding and occurrence of coating film peeling due to heat treatment can be suppressed.
A drawn/ironed can comprising an inner surface coating film at least on a can inner surface side, the inner surface coating film comprising a polyester resin as a main component, wherein a glass transition temperature (Tg) of the inner surface coating film is 55° C. or higher, and a degree of coverage of the inner surface coating film is 200 mA or less in terms of ERV.
Dependencies are inferred from the claim text.