Process and an apparatus for the continuous manufacture of boards from material incorporating a heat hardenable binder
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United States of America Patent
Stats
-
Aug 5, 1980
Grant Date -
N/A
app pub date -
May 12, 1978
filing date -
May 17, 1977
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Particleboard made from particles in the form of chips or fibers or the like is made by distributing a mass of chip material onto an endless belt conveyer system. The mass of material is subsequently passed to a precompressor, a high frequency preheating device, a further press and a finishing press. The unheated further press serves to reduce the thickness of the material to substantially that of the finished board prior to its consolidation by temperature and pressure in the finishing press. A further endless belt contacts the surface of the material and runs through the precompressor, the high frequency heating device and the further press and serves to counteract any tendency of the chip material to expand after leaving the precompressor. This endless belt additionally yields a number of other significant advantages, in particular a reduction of loss of heat from the material prior to reaching the finishing press.
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