A method of manufacturing rigid frame building elements filled with hard foam plastics

摘要

The method comprises the use of prefabricated, rigid, dimensionally stable, hollow skeleton frames, the hollow interior spaces of which are filled with closed cell hard foam plastic serving as heat insulation, and the elements are subjected in a press to a compression pressure which overrules the foaming pressure exerted on the frame of an element from inside. The press comprises a lower frame equipped with lower roller conveyor means (4) and an upper frame with upper roller conveyor means (5), said conveyor means confining between themselves a conveying gap, into which the elements are fed and subjected to compression by means of bellows (7) on which the upper rollers (5a) are mounted. Conveying speed is adjusted such that expansion of the foam and the pressure generated thereby has substantially ceased by the time an element leaves the conveying gap. IMAGE