Method and device for obtaining a starting material for producing thermal insulating bodies

摘要

When obtaining a starting product(10) for the production of heat insulation elements: a) the cells of scrap polyurethane foam are opened up, but retain part of their structure; b) the gas is removed and the open cellular particles classified according to size c) particles of a medium size(6) are separated off for use as a starting material. Process equipment includes machinery for opening up the foam cells, a separator(3) for removing gas from the open cellular particles, a classifying device for separating the particles into at least three sizes(5,6,7) and a collector for particles of the medium size(6).