To enhance mechanical strength by providing a part on one side a no-metal attached, band-shaped synthetic resin part bonded by high-frequency fusion welding and a part on the other side a metal-adherent, band-shaped synthetic resin bonded by fusion welding agent.
A decoration trim 15 is manufactured by a band-shaped synthetic resin such as band-shaped non-migratory soft polyvinyl chloride resin having a no-metal adherent part 15a on one side and a thin-metal adherent part 15b on the other hand by evaporation, plating, application or the like. This band- shaped synthetic resin is cut to an appropriate length corresponding to a length of an outer peripheral rim of the ceiling, cover or the like, and both ends thereof is abutted and formed in the rectangular and circular shapes or the like. The part 15a at which a metal of this abutting part is not adhered is bonded by high-frequency welding, and then the metal adherent part 15b is bonded by adhesive. By performing such a bonding, a bonding part 15w with its entire high rigidity is formed because almost of the high-frequency fusion welding part has high mechanical strength.
AMADA KOJI
MOGI TSUNEO
