MOLD FOR THERMOPLASTIC RESIN EXTRUDED FOAM

摘要

PURPOSE:To provide the title mold capable of keeping proper slip properties by specifically prescribing the material quality of the surface of the mold. CONSTITUTION:In a mold 1 for thermoplastic resin extruded foam having surface material quality wherein the contact angle with a molten resin over the range from the outlet 3 of the mold to the place separated from the outlet 3 by 5mm on the surface coming into contact with the molten resin of the passage of the mold is 45-65 deg., the surface roughness of a resin passage 2 is 6.3S or less and the drawing ratio of the passage in the mold is 3-40.