Patent ID: 6565937
Filing Date: 2003-05-20
Classification: B32B,Y10T

Abstract:
A resin-coated seamless can formed of a resin-coated metal plate having substantially unoriented two resin layers including a lower layer on the inside of the can and a surface layer on the lower layer, wherein the surface layer comprises a polyethylene terephthalate/isophthalate containing an isophthalic acid in an amount of from 3 to 13 mol % and having an intrinsic viscosity [&eegr;] of not smaller than 0.7, and the lower layer comprises a polyethylene terephthalate/isophthalate containing the isophthalic acid in an amount of from 8 to 25 mol %, which is larger than that of the surface layer, and having an intrinsic viscosity [&eegr;] of not smaller than 0.7, the resin layer on the inside of the upper part of the can satisfying the following formula (1),Cs>Caâ€ƒâ€ƒ(1) where Cs=Is973/Is795, Ca=Ia973/Ia795, Is973 is an infrared absorption intensity at 973 cmâˆ’1 measured for the surface layer, Is795 is an infrared absorption intensity at 795 cmâˆ’1 measured for the surface layer, Ia973 is an infrared absorption intensity at 973 cmâˆ’1 measured for the lower layer and Ia795 is an infrared absorption intensity at 795 cmâˆ’1 measured for the lower layer.