PROCESS FOR JOINING BY RIVETING A FIRST PART MADE OF PLASTIC TO A SECOND PART

摘要

At least one plastic rivet (5) is heated and at least partly melted by subjecting it to ultrasonic waves. The rivet (5) is made to pass through an opening traversing one of the parts (2) and the rivet is then welded to the other part (1). The rivet (5) is formed by a stud as a single piece or attached to the first part (2) by a collar (6) at the position of the opening traversing the part (2). The rivet (5) is separated from the part (2) by melting of the collar (6) under the effect of ultrasound. The invention is applicable, in particular, to the joining together of an outer body panel made of a thermoplastic material to an inner door panel of a motor vehicle.