Plastic article or earthenware shaping or treating: apparatus – With safety feature
Patent
1997-08-06
1999-08-10
Tentoni, Leo B.
Plastic article or earthenware shaping or treating: apparatus
With safety feature
425217, 425308, 425374, 4253823, B29C 4732, B29C 4772
Patent
active
059356197
ABSTRACT:
The invention relates to an extrusion head (3) for manufacturing a product ade 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).
REFERENCES:
patent: 3871810 (1975-03-01), Geyer
patent: 4353967 (1982-10-01), Hungerford
patent: 4927482 (1990-05-01), Capelle
patent: 5030079 (1991-07-01), Benzing, II
Abstract of Japan 59-11,221 (Published Jan. 20, 1984).
Compagnie Generale des Etablissements Michelin - Michelin & Cie
Tentoni Leo B.
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