ES438309A1 - Procedure for control of the transversal section in obtaining continuous polyurethane blocks. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Procedure for control of the cross section in obtaining continuous blocks of polyurethane, applicable to installations with head or solid mix on paper or liner disposed on mobile conveyor belt and with mold side walls also with lining or mobile paper, characterized because the process comprises a first phase in which the mixture in the liquid state is properly distributed on the paper or lining by means of the contribution of a gaseous element in the form of gas barriers, which can be moved horizontally and vertically to the desired point of the mixture. And also orientable to direct the same or the desired areas, performing in a second phase of the procedure, corresponding to the phase of growth of the mixture with transformation thereof from the liquid to solid state, an action on the mixture by means of a gas cylinder controlled in the form of a gas mattress achieved by the contribution of the eleme gaseous gas and extraction thereof together with the foaming gases of the growth phase, this gas chamber being also displaceable horizontally and vertically and adjustable in inclination or while the solids of the gas can be oriented as in the first phase, thus exerting the gas chamber a control over the growth of the mixture that passes from directing at the beginning of this phase the material towards the desired zone to progressively continue to direct to maintain said growth until the end of the phase, being susceptible method of applying said gas barriers in any other points of the process for obtaining the continuous blocks, as well as being carried out through a single phase of those mentioned, with or without the inclusion of gas barriers subsequent thereto. (Machine-translation by Google Translate, not legally binding)