PURPOSE: To obtain a vibration fusion bonded hollow molding made of polyamide resin which has small warpage, no decrease in fusion bonding strength and excellent external appearance.
CONSTITUTION: The vibration fusion bonded hollow molding made of polyamide resin comprises (a) 0 to 89wt.% of polyamide resin having 2.5 to 4.0 of relative viscosity and 50mJ/mg or more of melting enthalpy, (b) 1 to 90wt.% of polyamide resin having 1.5 to 4.0 of relative viscosity and 50mJ/mg or less of melting enthalpy, (c) 10 to 60wt.% of glass fiber and (d) 0 to 30wt.% of platelike filler. A plurality of hollow products 4 molded by using the polyamide resin composition containing 40 to 90wt.% of the sum of the resins (a) and (b) and 10 to 60wt.% of the sum of the fiber (c) and the filler (d) is vibration fusion bonded.
OYAMA HAJIME
HITOMI TATSUYA
