APPARATUS FOR PRODUCING CAST POLYAMIDE RESIN MOLDED OBJECT

摘要

PROBLEM TO BE SOLVED: To provide a resin molded product manufacturing apparatus using a heating medium oil type cylindrical mold member having no temp. gradient in order to stably polymerize a columnar cast polyamide resin molded object free from a cavity flaw. SOLUTION: In an apparatus for producing a cast polyamide resin molded object by the anion polymerization of a polymerizable lactam liquid within a mold, the oil passage 16 provided in a cylindrical mold member 2 consists of a plurality of horizontal oil passages and the vertical oil passage connecting them. This apparatus is constituted of the cylindrical mold member 2 communicating in one direction from below to above and a heating medium oil circulating device 9 regulating the temp. of heating medium oil and sending the temp. controlled oil into the cylindrical mold member 2.