Abstract: This disclosure relates to a polymer composition comprising (A) a first polymer; (B) one or more fillers; and optionally (C) a cross-linking pack including cross-linking agents and coagents. The first polymer comprises at least one of (i) a propylene-based copolymer and (ii) an ethylene/C3-C10 alpha-olefin copolymer. The one or more fillers comprise at least one of carbon black, ferrite magnet powder, calcium carbonate, alumina trihydrate, magnesium hydroxide, talc, titanium dioxide, fibers, marble dust, cement dust, clay, feldspar, silica or glass, fumed silica, alumina, magnesium oxide, antimony oxide, zinc oxide, barium sulfate, calcium sulfate, aluminum silicate, calcium silicate, titanium dioxide, titanates, clay, nanoclay, organo-modified clay or nanoclay, glass microspheres, chalk, or any combination thereof.

Abstract: The present disclosure is related to a die suitable for extrusion of thermoplastic vulcanizate, 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.