MOLD FOR EXTRUSIOM MOLDING

摘要

PURPOSE:To supply the material to a die with a normal stream without causing a flapping and other undesirable phenomenon of the extrusion plastic mold by providing in an exit of a cylinder barrel a store portion made of the material capable of freely controlling its volumn. CONSTITUTION:A cylinder barrel 1 having a screw 2 provided therein serves to supply the material to a die 3. A breaker plate 4 is fixed by a fixing member 5. A store portion 6 made of soluble material is provided at the exit of the cylinder barrel 1 and the volumn of the store 1 can be freely varied by changing a thickness of a spacer 7. A screen back is indicated at 9. According to such a construction, the material is molten in the cylinder barrel 1 and a pulsed current generated when it is transferred to by the screw 2 is absorbed by the store portion 6, the material is supplied as a normal stream to the die 3 while avoiding the flapping of the extrusion plastic mold or a variation in its density. The volumn of the store portion 6 can be adjusted depending upon the kind of the extruded material or extruding condition to supply the material as the normal stream to the die 3.