Patent Number: 6,254,368

Title: Plastic molding machine

Abstract: Apparatus for producing plastic film by extrusion includes a plastic extrusion machine having an extrusion screw, a motor for turning the screw, a die connected to the screw barrel outlet, a manifold having an opening receiving the die, a blower delivering cooling air to the manifold, and an infared emitter and detector for monitoring phase transition of the molten plastic material into solidified plastic film in adjusting operation of the apparatus to maintain plastic material phase transition occurrence in a preselected position downstream of the die by either adjusting speed of the blower or adjusting speed of the motor or both.

Inventors: Shinmoto; Jitsumi (Tokyo, JP)

Assignee: Tomy Machinery Manufacturing Col., Ltd.

International Classification: B29C 47/00 (20060101); B29C 47/92 (20060101); B29C 47/88 (20060101); B29C 047/92 ()

Expiration Date: 07/03/2018