Patent ID: 8183323

Claim:
A method for laser-welding molding articles, which comprises laying a molded article on a laser-absorbing resinous molded article and irradiating the former molded article with a laser light, in which the former molded article is formed of a thermoplastic resin (A) which comprises: a rubber-reinforced resin (A1) obtained by polymerizing a vinyl monomer in a presence of a rubbery polymer (a), or a composition (A2) comprising the rubber-reinforced resin (A1) and a (co)polymer (b) of a vinyl monomer, wherein said rubbery polymer (a) dispersed in said thermoplastic resin has a weight average particle size of 50 to 220 nm, said molding material having a light transmittance at a wavelength of 808 nm in a range of 5% or higher when the material is molded into a 4 mm-thick sample piece.