METHOD FOR SOLVING SIDE BELLY PHENOMENON FOR IMPROVING PLASTIC SQUARE CONTAINER

摘要

PURPOSE: A method for solving side belly phenomenon for improving plastic square container is provided to improve the outer appearance and the productivity of the plastic square container. CONSTITUTION: A method for solving side belly phenomenon for improving plastic square container(1) including the steps of extruding synthetic resin for making a parison shape, putting the extruded synthetic resin in a mold in which a square plastic container shape is carved, performing vacuum molding, and cooling the molded product, wherein the container is transformed as a concave shape by pushing the center of the side of the container by using tongs(11) or a roller(2) before completing the molded product and completing the cooling thereafter.