Patent ID: 7105125

Claim:
A method of making a door trim structure for automobiles, the door trim structure including a door trim and an inner door panel, the inner door panel is a shock absorber, the inner door panel includes a functional member attachment portion integral with the inner door panel, wherein the functional member attachment portion includes a recess or a protrusion as a part of an inner wall of the door trim structure, said method comprising the step of: forming the inner door panel and the door trim of thermoplastic resin into an integral one-piece unit by a blow-molding process, wherein the inner door panel and the door trim are formed from a single parison with a tip end of the inner door panel being bonded and integrated with the door trim at at least one part, wherein the functional member attachment portion is formed to include a first protrusion, and wherein the door trim is formed to include a second protrusion that is fused to the first protrusion to form a seal.