Process and device for the production of aperfeicoado asbestos cement plates, in particular for asbestos cement boards

摘要

1502958 Corrugated sheets FULGURITWERKE SEELZE UND EICHRIEDE IN LUTHE BEI HANOVER ADOLF OESTERHELD 1 Oct 1975 [10 Oct 1974] 40103/75 Heading B5A Fibrous asbestos cement fleece is delivered to sheet forming roller 1 by belt 5. Cut fleece of the desired thickness and size is fed as sheet 8 to press table 10 alternating with profiled oiled steel plates 9. The press ram 16 is used to squeeze the stack to dewater and form the sheets. The steel plates may have an irregular pattern of depressions or protrusions, obtained by bombarding the plates with balls, or a regular pattern. The depressions or protrusions may be deeper than the thickness of the sheet as in Fig. 4 (not shown).