Method for producing flat bottle by collet paillin blow molding method, and Paris son for coal paste forming

摘要

PROBLEM TO BE SOLVED: To uniformize the wall thickness distribution of a flat bottle, to ensure strength in a long diameter direction and squeeze properties in a short diameter direction and to enhance barrier function as a container. ;SOLUTION: A cold parison 1 formed in a non-uniform wall thickness state so that the wall thickness of a part 3 stretched in the long diameter direction of a flat shape is large and that of a part 4 stretched in the short diameter direction thereof is small is heated to predetermined temp. before blow molding and this heated parison is subjected to blow molding in a blow mold 6 to produce a flat bottle 2.;COPYRIGHT: (C)2000,JPO