Patent ID: 8541082
Filing Date: 2013-09-24
Classification: B32B,Y10T

Abstract:
1. A laminated resin molding comprising a thermoplastic polymer layer (A), a polyamide-based resin layer (B) and a thermoplastic resin layer (C), which is a hose or a tube, which is obtained by a method comprising laminating by the simultaneous multilayer coextrusion technique using a coextruding machine comprising a die and a plurality of extruders each for feeding a resin to said die, said die temperature being not higher than 230° C., wherein said thermoplastic polymer layer (A), said polyamide-based resin layer (B) and said thermoplastic resin layer (C) are laminated in that order and directly firmly adhered to one another, said thermoplastic polymer is to adhere to the polyamide-based resin by thermal fusion bonding, the initial adhesive strength between the thermoplastic polymer layer (A) and the polyamide-based resin layer (B) is not lower than 25 N/cm, the initial adhesive strength between the polyamide-based resin layer (B) and thermoplastic resin layer (C) is not lower than 25 N/cm, said polyamide-based resin has an amine value of 15 to 35 (equivalents/10 said thermoplastic resin contains a functional group and is to thereby firmly adhere to said polyamide-based resin by thermal fusion bonding, said functional group contains carbonyl group, said thermoplastic polymer layer (A) consists essentially of said thermoplastic polymer, said thermoplastic polymer is a thermoplastic elastomer comprising a polyurethane-based elastomer, and said thermoplastic resin comprises a fluorine-containing ethylenic polymer.