EASY-TO-OPEN LID WITH EXCELLENT SUITABILITY FOR HIGH-TEMPERATURE OPENING

摘要

An easy-to-open lid which comprises a resin-coated metallic sheet obtained by coating a metallic base with a polyester film through a primer, wherein the primer comprises an epoxy resin or polyester resin and a resol resin, the resol resin having 0.2-2.0 methylol groups per benzene ring. When an end of the opening tab is plunged to break the score for opening, no opening failure occurs and the opening operation can be conducted lightly. In particular, even when the lid is in the state of being heated at a high temperature, it has excellent suitability for high-temperature opening and does not pose that problem. It is excellent also in corrosion resistance, resistance to the contents, and retortion resistance.