INNER POT FOR RICE COOKING JAR

摘要

PROBLEM TO BE SOLVED: To provide an inner pot excellent in the durability without peeling off a fluororesin coating film by draw working a laminated body coated with a tetrafluoroethylene/perfluoroalkyl vinyl ether copolymer (PFA resin) through a thermally modified coating film on at least one surface of a metal plate. SOLUTION: In the manufacture of an inner pot of a rice-cooking jar, at least on one surface of a metal plate is provided a laminated body coated with a tetrafluoroethylene/perfluoroalkyl vinyl ether copolymer (PFA resin) through a coating film consisting of epoxy resin, fatty acid or the like and thermally modified by subjecting to the heat treatment at least 350 deg.C of temperature. After the laminated body is subjected to draw working with the resin layer being on the inner surface, the required inner pot is formed by the heat treatment at least 320 deg.C of temperature. As the epoxy resin is used a bisphenol type epoxy resin for example and as the fatty acid is generally used a compound shown by RCOOH (R is a saturated or unsaturated hydrocarbon).