| abstract |
PROBLEM TO BE SOLVED: To provide a resin layer mainly composed of polyester on a base material such as a metal, to solve the above-mentioned problems, to provide excellent uniformity of coating, completeness of coating and adhesion, and moldability. Another object of the present invention is to provide a laminate excellent in heat resistance and productivity and a seamless can made of the laminate. SOLUTION: In a laminate in which a resin mainly composed of polyester is laminated on a substrate, at a temperature at the time of melt extrusion, the following formula (1) R = η 12.2 / η 1216 (1) eta 12.2 is the melt viscosity at a shear rate of 12.2Sec -1 in the extrusion temperature of the polyester, eta 1216 a shear rate of 1216 sec -1 at the extrusion temperature of the polyester The melt viscosity ratio (R) defined by the above is in the range of 2.0 or more and η 1216 is in the range of 500 poise or more, and after the resin layer is melt-extruded. A laminate characterized by being quenched. |