LARGE-WIDTH SHEET EXTRUSION DIE FOR EXTRUSION PRESS FOR PRODUCING FILM OR SHEET OUT OF THERMOPLASTIC SYNTHETIC RESIN

摘要

PURPOSE: To provide a wide-sheet extrusion die mold for an extrusion press for producing a thin film and a plate from a thermoplastic synthetic resin. CONSTITUTION: A wide-sheet extrusion die mold has a mold block 1 and two extrusion die lip parts 2, 3 made of a metal, especially a thermal refined steel extending over the entire length of extrusion die width and arranged at a distance limiting an extrusion die slit width 5 and at least on extrusion die lip part 2 is formed as a rigid beam over the total length of the extrusion die width and the thickness errors of a thin film and a plate comprising thermoplastic synthetic resin produced by this extrusion die mold is reduced.