초록 ▼

A method for producing a blow molded, heat set container including at least one large collapse panel in a side wall of the container. The area of the side wall of the container forming a collapse panel is heat set at a lower temperature than the area of the side wall of the container adjacent to the

A method for producing a blow molded, heat set container including at least one large collapse panel in a side wall of the container. The area of the side wall of the container forming a collapse panel is heat set at a lower temperature than the area of the side wall of the container adjacent to the collapse panel to prevent distortion of the large collapse panel when the container is removed from a mold.

대표청구항 ▼

A method for producing a blow-molded, heat set container including at least one large collapse panel in a side wall of said container, said method comprising: blowing-molding a parison of thermoplastic material to form said container in a mold comprising a mold cavity which defines a final shape of

A method for producing a blow-molded, heat set container including at least one large collapse panel in a side wall of said container, said method comprising: blowing-molding a parison of thermoplastic material to form said container in a mold comprising a mold cavity which defines a final shape of said container, said mold cavity having an inner wall and having at least one inwardly projecting mold wall insert corresponding to said large collapse panel to be formed in a side wall of said container; and applying heat to said mold to heat set said container, an inner surface of said mold wall insert being heated to a temperature sufficiently lower than a temperature to which adjacent portions of said inner wall of said mold are heated to heat set said large collapse panel at a lower temperature than remaining sections of said container sufficient to prevent distortion of said large collapse panel when said container is removed from said mold.