METHOD FOR PRODUCING JOINED BODY AND JOINED BODY OBTAINED BY THE METHOD

摘要

PROBLEM TO BE SOLVED: To provide a method for producing the joined body of moldings produced by molding resin compositions containing an alicyclic structure-containing polymer by using a laser which has high joining strength and prevents the occurrence of bubbles on a joining surface.

SOLUTION: The method for producing the joined body includes a process in which a laser beam absorber is applied on at least one part of a surface for joining a molding (A) produced by molding a resin composition containing the alicyclic structure-containing polymer and having a glass transition temperature of TA(°C) and a molding (B) produced by molding a resin composition having a glass transition temperature of TB(°C) (TA≥TB) together and a process in which while the moldings (A) and (B) are contacted with each other through the absorber, the joining surface is irradiated with laser beams of output (W) ranging from (0.1×TA-2.6) to (0.1×TA-4.6) to join the moldings (A) and (B) together.

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