Patent ID: 8420728

Claim:
A process for producing a long-fiber-reinforced thermoplastic resin particle blend material (C) comprising dry blending 10 to 90 percent by weight of long-fiber-reinforced thermoplastic resin particles (A) comprising a thermoplastic resin (A 1 ) produced by using a metallocene catalyst, a modified polyolefin resin (A 2 ) modified with an unsaturated carboxylic acid or a derivative thereof, and reinforcing fibers (A 3 ), wherein the following requirements (1) to (5) are satisfied, and 90 to 10 percent by weight of polyolefin resin particles (B) for dilution, where the total of the long-fiber-reinforced thermoplastic resin particles (A) and the polyolefin resin particles (B) for dilution is assumed to be 100 percent by weight: (1) The amount of modification of the unsaturated carboxylic acid or a derivative thereof is 0.01 to 2 percent by weight in 100 percent by weight of the total of the thermoplastic resin (A 1 ) and the modified polyolefin resin (A 2 ); (2) The total of the thermoplastic resin (A 1 ) and the modified polyolefin resin (A 2 ) constitute 20 to 70 percent by weight in 100 percent by weight of the total of the thermoplastic resin (A 1 ), the modified polyolefin resin (A 2 ), and the reinforcing fibers (A 3 ); (3) The reinforcing fibers (A 3 ) constitute 30 to 80 percent by weight in 100 percent by weight of the total of the thermoplastic resin (A 1 ), the modified polyolefin resin (A 2 ), and the reinforcing fibers (A 3 ); (4) When 25 g of the long-fiber-reinforced thermoplastic resin particles (A) are encapsulated in a 20-L chamber and are stood at 65° C. for 1 hour, the amount of acetaldehyde dissipated from the long-fiber-reinforced thermoplastic resin particles (A) is 3.0 μg/m 3 or less; and (5) The melting point of the resin component in the long-fiber-reinforced thermoplastic resin particles (A) is 150° C. or higher.