DIE AND PROCESS FOR EXTRUSION

摘要

A die suitable for extrusion of thermoplastic vulcanizate is provided, in particular for co-extrusion of multiple materials comprising a thermoplastic vulcanizate. The die comprises a pool die plate, an orifice die plate, and a profile die plate. By utilizing the die according to the present disclosure in extrusion, the flow of extrudate can be well controlled and balanced due to the design of flow pool and through orifice, thereby an extruded article achieves good shape performance, for example, good surface smoothness, and an undesired effect like edge tear, warpage, die moustache, silver line in the extrusion can be avoided.