Extrusion head with recycling device
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United States of America Patent
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Aug 10, 1999
Grant Date -
N/A
app pub date -
Aug 6, 1997
filing date -
Aug 9, 1996
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The invention relates to an extrusion head (3) for manufacturing a productade of a rubber compound, provided with an inlet passage (41) for said rubber compound to pass into an accumulation chamber emerging in an extrusion orifice (6) through which said rubber compound is forced and which includes a wall (8) acting cooperatively with a rotating roller (7) in order to define the profile of the product, the extrusion head (3) comprising a coating device (15) which puts a material based on a rubber compound into the accumulation chamber (4) directly between the inlet passage (41) and the extrusion orifice (6) and distributes it on the surface of the roller (7) in order to superpose, from above, the product issuing from the inlet passage (41). The 'coating' material may consist of the strands of flash coming from deflashing the edges of the extruded product, the coating device therefore constituting a flash recycling device. The invention also relates to a device (15) for coating by superposition, intended to be mounted on an extrusion head (3) which includes a rotating roller (7).
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