Kit of materials for laser welding and method for laser welding

Abstract

A material kit for laser welding, which is used for laser-welding a first resin member non-absorptive to laser light and a second resin member absorptive to laser light by overlapping the two resin members and irradiating laser light from the first resin member side, the material kit comprising a first resin material for forming a first resin member and a second resin material for forming a second resin member, wherein the first resin material comprises a first resin and a crystal nucleating agent or a resin having a crystallization accelerating effect on the first resin, and the second resin material comprises a second resin and an additive absorptive to laser light; and a laser welding method, for resin members, comprising using the kit.

Dependencies are inferred from the claim text.