Method for producing metal profile bars for support structures for panels, particularly of plaster-board, and profile bar produced by the method

摘要

A method for producing C-shaped metal profile bars for support structures for panels, particularly of plaster-board, characterised by subjecting a metal strip of width less than the development of the profile bar to be obtained, to the following operations: incising at least that band of the strip which in the C-shaped profile bar is to form the central web; pressing said band, with bending of the edges of the incisions and dishing of the edge ends to obtain a rim endlessly bounding each incision; profile-forming said strip to obtain the C-shaped profile bar; transversely stretching the pressed portion of the strip.