Abstract: Method for adhering a first part made of plastic material (MP) and a second part, in which at least one thickness of adhesive is deposited onto at least one of said parts, and the other part is placed against the thickness of adhesive, wherein: at least one electromagnetic wave of a given wavelength is selected, such that the transmission of said plastic material (MP) in relation to this wave is not zero, and such that the absorbance of the adhesive in relation to this wave is not zero; and at least some of the adhesive is heated by irradiating it by transmitting said electromagnetic wave through said plastic material (MP) to activate and/or accelerate cross-linking of the adhesive.

Abstract: A system for preforming a sheet of plastic material (MP) including a first element forming a preforming cavity, the system including a second element adapted to be positioned opposite the first element, a set of pressing means sequentially actuated and carried by the second element to apply pressure locally to the sheet of plastic material (MP), so as to press this sheet (MP) against the first element, at least one means for sequential actuation of the pressing means.

Abstract: A method of manufacturing a painted part of plastic material for the automobile industry having an opening, including the steps of molding the part and then, in the following order: painting the part; after painting, punching the part without edge-rounding using a punch to obtain the orifice; and after punching and extracting the punch from the orifice, rounding the edge of the opening of the orifice to have a predetermined radius of curvature in a radial section across the edge.

Abstract: The rib support (32) is for being applied against an inside face of a bodywork skin (12) in the vicinity of at least one orifice (28) provided through said skin (12) for passing a rib (26) of a fitting (14) that is to be fitted onto a visible outside face of said skin (12), opposite from its inside face. Said support (32) comprises at least a rib (30) arranged to project from the inside face of the skin (12) in the vicinity of an orifice (28) in said skin (12), when the support (32) is applied against the inside face of the skin (12).

Abstract: A method of manufacturing a painted part (3) of plastics material for the automobile industry, the part including an orifice (4) having an opening (5) with a rounded edge, the method consisting in molding the part, and then in subjecting it to the operations of punching, edge-rounding and painting a predetermined order, the method being characterized in that the predetermined order is as follows: a) painting; b) punching without edge-rounding using a punch (1) to obtain the orifice (4); and c) rounding the edge of the opening (5) of the orifice (4) after extracting the punch (1) from the orifice (4). A painted part made of plastics material for the automobile industry, including an orifice (4) having an opening (5) with its edge rounded to a radius of at least 0.9 mm.