Abstract: A description is given of a method for producing entire frames made up of plastic profiles for outer frames and sash frames. This method consists in the fact that the outer-frame profiles and the sash-frame profiles are connected temporarily to one another with the aid of at least one interposed spacer piece, which compensates for the difference in the frame outer dimensions in the direction of the frame plane, and, in this assembled arrangement, are jointly cut to size, welded and, if appropriate, finished. In this arrangement, the same (or another) spacer piece also gives an additional distance between the frame profiles in the direction perpendicular to the frame plane, which additional distance, depending on the thickness of the frame profiles, is set to a range of from 3-10 mm.

Abstract: A method for welding a first member and a second plastic member, the first member having a first surface and the second member having a second surface which are to be welded to each other, the surfaces having different shape configurations nonconforming to each other includes positioning the first member transversely with respect to the second member with the nonconforming surfaces facing each other, heating the first surface at a welding temperature and transforming the shape of the first surface such as to at least partially conform it to the shape of the second surface, heating the second surface at a welding temperature at the surface area corresponding in size and contour configuration to the first surface and at the location where the first surface is to be welded to the second surface, and welding the first and second heated surface together.