Patent ID: 8318051
Filing Date: 2012-11-27
Classification: B29C,B29K,Y10T

Abstract:
1. A light-absorbent resin composition for laser welding, comprising laser light absorbent nanoparticles and a polymer dispersing agent that has a glass transition temperature of 30° C. or higher, wherein the laser-light-absorbent nanoparticles are at least one of nanoparticles of tungsten oxide indicated by the general formula W wherein the polymer dispersing agent is included in a ratio of 2 to 10 times the weight of the laser light absorbent nanoparticles, and a content ratio of the nanoparticles of tungsten oxide or the composite tungsten oxide in a region that is 3 mm or less from a surface and that constitutes a surface layer of the light-absorbent resin molding is 0.01 g/m