Procedure for the manufacture of continuous profiles of cellular plastic material, with appearance of wooden profiles. (Machine-translation by Google Translate, not legally binding)

摘要

Process for the manufacture of continuous profiles of cellular plastic material, with the appearance of wood profiles, according to which a profile based on an expandable plastic material is molded by extrusion, using an extrusion machine of known type, to which a special row is attached which has a multiplicity of holes or slots independent and very close to each other, defining together the approximate section of the final profile to be obtained, so that at the exit of this row the profile appears constituted by a succession of independent threads or strips, which immediately undergo an expansion, given the characteristics of the constituent material, increasing in size, coming into contact and showing solidarity with each other by their contact areas with which on the surface of the profile a succession of small longitudinal races, forming a veined pattern; with the essential characteristic, furthermore, that after this expansion has taken place, the profile is forced to circulate through a conforming tool and a refrigerated gauge, which confers its definitive shape, reducing its section, with which the independent longitudinal elements that originally integrated the profile, are applied against each other, welding together completely and defining a compact cell body, while the elements that occupy the surface areas of the profile, when subjected to the action of the cooling device of the tooling, solidify prematurely and they do not weld together completely, preserving at least in part the superficial veining that confers on the whole the appearance of wood; at the outlet of this calibrating shaping tool, the profile is forced through a cooling bath, in which it solidifies completely, being able to be cut into segments of appropriate length and be shipped to the market without the need for any finishing operation . (Machine-translation by Google Translate, not legally binding)