Thermoplastic elastomer powder for powder molding, powder molding method using the same and molded article thereof

摘要

A thermoplastic elastomer powder for powder molding, comprising an elastomer composition of an ethylene- alpha -olefin copolymer rubber and a polyolefin resin, wherein said elastomer composition has a complex dynamic viscosity eta *(1) as measured at frequency of 1 radian/sec. in dynamic viscoelasticity measurement at 250 DEG C., of 1.5x105 poise or less, a Newtonian viscosity index n calculated from the following formula by using the complex dynamic viscosity eta *(1) at a frequency of 1 radian/sec. and the complex dynamic viscosity eta *(100) at a frequency of 100 radian/sec. of 0.67 or less, and a hardness (shore D) of 45 or less: n={log eta *(1)-log eta *(100)}/2.