Device for synchronizing the movement of the cover web and base web during the continuous production of rectangular foam blocks
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United States of America Patent
Stats
-
Sep 16, 1980
Grant Date -
N/A
app pub date -
Mar 26, 1979
filing date -
Mar 25, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a method of continuously producing rectangular foam blocks wherein a foamable polyurethane-reaction mixture is deposited on a bottom web moved by a conveyor belt, the surface of the rising foam is covered by a cover web which is withdrawn from the foam surface by a deviating device disposed near a location at which the foaming of the mixture is terminated, and the cover web is further advanced by means of a deviating roller, a method of synchronizing the movements of the cover web and the bottom web includes driving the deviating roller, through a transmission coupled to the conveyor belt, at a peripheral speed that is synchronized with the conveyor speed of the conveyor belt, and passing the cover web between the deviating roller and a roller adjustable in elevation and in pressure contact with the deviating roller.
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