Abstract: [Problem] To provide: a resin-coated metallic plate which cannot undergo the occurrence of a retort brushing phenomenon (the formation of white spots) or the delamination of a film under retort sterilization treatment conditions; and others. [Solution] A resin-coated metallic plate having a resin layer (A) and a resin layer (B) is characterized in that the resin layer (A) contains 50 to 80 wt % of a polyethylene terephthalate-based resin (I) and 20 to 50 wt % of a polybutylene terephthalate-based resin (II), wherein the resin layer (B) contains 50 to 80 wt % of a polyethylene terephthalate-based resin (III) and 20 to 50 wt % of a polybutylene terephthalate-based resin (II), the polyethylene terephthalate-based resin (I) has a melting point of 210 to 230 ° C. inclusive, the polybutylene terephthalate-based resin (II) has a melting point of 215 to 225° C. inclusive, and the polyethylene terephthalate-based resin (III) has a melting point of higher than 230° C. and 205° C. or lower.

Abstract: An organic resin-covered surface-treated metal sheet having formed on at least one surface of a metal sheet a surface-treatment coating and an organic resin film on the coating. The surface-treatment coating contains a polyvalent metal compound and a poly-carboxylic acid type polymer containing not less than 60 mol % constituent units derived from at least one polymerizable monomer selected from acrylic acid, maleic acid, methacrylic acid, and itaconic acid. The surface-treatment coating measured for its infrared-ray absorption spectra has a peak height ratio (?/?) of a maximum absorption peak height (?) in a wave number range of 1660 to 1760 cm?1 and a maximum absorption peak height (?) in a wave number range of 1490 to 1659 cm?1 is from 0.37 to 2.35. Also disclosed is a can body made from the organic resin-covered surface-treated metal sheet and a can lid made from the organic resin-covered surface-treated metal sheet.

Abstract: An organic resin-covered surface-treated metal sheet having formed on at least one surface of a metal sheet a surface-treatment coating and an organic resin film on the coating. The surface-treatment coating contains a polyvalent metal compound and a poly-carboxylic acid type polymer containing not less than 60 mol % constituent units derived from at least one polymerizable monomer selected from acrylic acid, maleic acid, methacrylic acid, and itaconic acid. The surface-treatment coating measured for its infrared-ray absorption spectra has a peak height ratio (?/?) of a maximum absorption peak height (?) in a wave number range of 1660 to 1760 cm?1 and a maximum absorption peak height (?) in a wave number range of 1490 to 1659 cm?1 is from 0.37 to 2.35. Also disclosed is a can body made from the organic resin-covered surface-treated metal sheet and a can lid made from the organic resin-covered surface-treated metal sheet.

Abstract: A chromium-free surface-treated metal sheet includes a metal sheet, a surface-treatment coating that contains a polycarboxylic acid type polymer and a zirconium compound and that is formed on at least one surface of the metal sheet, and a coating that contains a polyester resin, a phenol resin and an acid catalyst and that is formed on the surface-treatment coating. The surface-treated metal sheet can be used for producing cans and can lids maintaining excellent dent resistance even for acidic beverages, without permitting the organic resin film formed on the coating to be peeled even under high-temperature and wet environments during a sterilization treatment or the like, and maintaining excellent hot water-resistant adhering property.

Abstract: An organic resin-covered surface-treated metal sheet having formed on at least one surface of a metal sheet a surface-treatment coating and an organic resin film on the surface-treatment coating. The surface-treatment coating contains a poly-carboxylic acid type polymer and a polyvalent metal compound. The surface-treatment coating measured for its infrared-ray absorption spectra has a peak height ratio (?/?) of a maximum absorption peak height (?) in a wave number range of 1660 to 1760 cm?1 and a maximum absorption peak height (?) in a wave number range of 1490 to 1659 cm?1 of from 0.05 to 2.35.

Abstract: A surface-treated aluminum plate obtained by forming, on at least one surface of an aluminum plate, a conversion-coated layer that contains a polyester resin and a zirconium compound or a titanium compound. The surface-treated aluminum plate excellently adheres to an organic resin coating and can be used as a material for producing cans featuring excellent corrosion resistance and shock resistance.

Abstract: An object of the present invention is to provide an organic-resin-coated metal sheet for beverages and foods having retort blushing resistance and can manufacturability, a manufacturing method thereof, and a metal can and a can lid that are made by processing the organic-resin-coated metal sheet. An organic-resin-coated metal sheet of the present invention is an organic-resin-coated metal sheet in which an unstretched film is stacked on at least a single surface of a metal sheet, and is characterized in that the unstretched film is composed of a polyester-based resin composition obtained by blending copolymerized polyester (I) composed mainly of a polyethylene terephthalate-based resin with crystalline polyester (II) composed mainly of a polybutylene terephthalate-based resin with a mixing amount of the crystalline polyester (II) of 20 to 45 wt %.

Abstract: A chromium-free surface-treated metal sheet includes a metal sheet, a surface-treatment coating that contains a polycarboxylic acid type polymer and a zirconium compound and that is formed on at least one surface of the metal sheet, and a coating that contains a polyester resin, a phenol resin and an acid catalyst and that is formed on the surface-treatment coating. The surface-treated metal sheet can be used for producing cans and can lids maintaining excellent dent resistance even for acidic beverages, without permitting the organic resin film formed on the coating to be peeled even under high-temperature and wet environments during a sterilization treatment or the like, and maintaining excellent hot water-resistant adhering property.

Abstract: A surface-treated aluminum plate obtained by forming, on at least one surface of an aluminum plate, a conversion-coated layer that contains a polyester resin and a zirconium compound or a titanium compound. The surface-treated aluminum plate excellently adheres to an organic resin coating and can be used as a material for producing cans featuring excellent corrosion resistance and shock resistance.

Abstract: An organic resin-covered surface-treated metal sheet having formed on at least one surface of a metal sheet a surface-treatment coating and an organic resin film on the surface-treatment coating. The surface-treatment coating contains a poly-carboxylic acid type polymer and a polyvalent metal compound. The surface-treatment coating measured for its infrared-ray absorption spectra has a peak height ratio (?/?) of a maximum absorption peak height (?) in a wave number range of 1660 to 1760 cm?1 and a maximum absorption peak height (?) in a wave number range of 1490 to 1659 cm?1 of from 0.05 to 2.35.

Abstract: A coated metal sheet further covered with an organic resin obtained by forming, on at least one surface of a metal sheet, a coating film and further forming thereon an organic resin layer. The coating film contains a polyester resin having a glass transition temperature of 20 to 55° C., a phenol resin and an acid catalyst, in order to be able to provide the coated metal sheet further covered with the organic resin that is suited for producing cans and can lids having excellent applicability for producing cans and excellent dent resistance.

Abstract: A chromium-free coated metal sheet obtained by forming a coating on at least one surface of a metal sheet, and a coated metal sheet further covered with an organic resin film obtained by forming an organic resin film on the coating of the coated metal sheet, the coating thereof containing a main resin, a phenol resin as a curing agent and a tannic acid as an additive. The metal sheets have excellent dent resistance to cope with even acidic beverages, have excellent applicability for producing cans, and are capable of providing cans and can lids that have excellent hot water-resistant adhering property without permitting the organic resin film to peel even if exposed to a high temperature and highly humid environment such as of the step of sterilization and, besides, offering advantage in productivity and economy.

Abstract: An object of the present invention is to provide an organic-resin-coated metal sheet for beverages and foods having retort blushing resistance and can manufacturability, a manufacturing method thereof, and a metal can and a can lid that are made by processing the organic-resin-coated metal sheet. An organic-resin-coated metal sheet of the present invention is an organic-resin-coated metal sheet in which an unstretched film is stacked on at least a single surface of a metal sheet, and is characterized in that the unstretched film is composed of a polyester-based resin composition obtained by blending copolymerized polyester (I) composed mainly of a polyethylene terephthalate-based resin with crystalline polyester (II) composed mainly of a polybutylene terephthalate-based resin with a mixing amount of the crystalline polyester (II) of 20 to 45 wt %.

Abstract: A surface-treated aluminum plate obtained by forming, on at least one surface of an aluminum plate, a conversion-coated layer that contains a polyester resin and a zirconium compound or a titanium compound. The surface-treated aluminum plate excellently adheres to an organic resin coating and can be used as a material for producing cans featuring excellent corrosion resistance and shock resistance.

Abstract: A polyester resin for covering metal sheets, comprising an acid component chiefly consisting of a terephthalic acid and, further, containing 1 to 15 mol % of an isophthalic acid and 2 to 10 mol % of a dimeric acid; and an alcohol component chiefly consisting of an ethylene glycol; wherein the dimeric acid contains not less than 20 mol % of an aliphatic dimeric acid, and the molar ratio of the aliphatic dimeric acid and an alicyclic dimeric acid is in a range of 1:1 to 1:5. The polyester resin for covering metal sheets features excellent film-forming property, closely adhering property during the working and elution resistance.

Abstract: A film for lamination comprising a polyester resin containing a polyfunctional component in an amount of 0.01 to 0.50 mol % and having a melt tension of not smaller than 50 mN. Even when laminated on a metal plate by a high-speed extrusion lamination method, the film can be applied onto the metal plate maintaining a uniform thickness and good adhesiveness without undergoing oscillation or pulsation. Being blended with a copolymerizable component in an amount of 10 to 20 mol %, in particular, the laminated member coated with the film features excellent adhesiveness of the coating. By further laminating a layer of another polyester resin on the above film, the flavor-retaining property can be imparted as well.

Abstract: A film for lamination comprising a polyester resin containing a polyfunctional component in an amount of 0.01 to 0.50 mol % and having a melt tension of not smaller than 50 mN. Even when laminated on a metal plate by a high-speed extrusion lamination method, the film can be applied onto the metal plate maintaining a uniform thickness and good adhesiveness without undergoing oscillation or pulsation. Being blended with a copolymerizable component in an amount of 10 to 20 mol %, in particular, the laminated member coated with the film features excellent adhesiveness of the coating. By further laminating a layer of another polyester resin on the above film, the flavor-retaining property can be imparted as well.

Abstract: The present invention provides a method for trimming a resin film which can recycle lug portions of the resin film after trimming, can easily trim the resin film even when the resin film is made of resin which becomes fragile by cooling, and enhance the use efficiency of a laminated sheet by making resin coated portions disposed at both sides of the laminated sheet thin. At the time of coating molten resin at least on one surface of a substrate to form a resin film after making the molten resin pass between coating rolls, the lug portions of the resin film are trimmed before the lug portions of the resin film are cooled.

Abstract: The present invention provides a method for trimming a resin film which can recycle lug portions of the resin film after trimming, can easily trim the resin film even when the resin film is made of resin which becomes fragile by cooling, and enhance the use efficiency of a laminated sheet by making resin coated portions disposed at both sides of the laminated sheet thin. At the time of coating molten resin at least on one surface of a substrate to form a resin film after making the molten resin pass between coating rolls, the lug portions of the resin film are trimmed before the lug portions of the resin film are cooled.

Abstract: A resin-coated seamless can satisfying such properties as high degree of workability, adhesiveness of film, resistance against high temperatures and wet heated condition, corrosion resistance and resistance against being dented. The resin-coated seamless can is formed of a resin-coated metal plate having substantially unoriented two layers including a lower layer on the inside of the can and a surface layer on the lower layer, wherein both of the layers comprise a polyethylene terephthalate/isophthalate having an intrinsic viscosity [&eegr;] of not smaller than 0.7, and the surface layer contains an isophthalic acid in an amount of from 3 to 13 mol %, and the lower layer contains the isophthalic acid in an amount of from 8 to 25 mol %, which is larger than that of the surface layer, and the degree of crystallization of the surface layer is larger than the degree of crystallization of the lower layer in the upper part of the can wall.