Plastic and nonmetallic article shaping or treating: processes – With measuring – testing – or inspecting – Controlling rate of movement of molding material or its...
Patent
1995-09-05
1998-01-27
Vargot, Mathieu D.
Plastic and nonmetallic article shaping or treating: processes
With measuring, testing, or inspecting
Controlling rate of movement of molding material or its...
26421123, 264349, 425145, 425204, B29C 4760, B29C 4792
Patent
active
057119040
ABSTRACT:
A method of making silica loaded elastomer masterbatches or compounded productive elastomer stocks with or without the simultaneous extrusion of component profiles is provided. A twin-screw extruder is used to mix the elastomeric stock in multiple mixing zones at controlled temperatures in which a concurrent chemical reaction takes place between the silica coupler, the silica, and/or the diene based elastomer. Silica, elastomer, silica coupler, and other ingredients are fed into the twin screw extruder continuously through precise loss-in-weight or volumetric feeders. Chemical reactions(s) in the elastomer/silica based composition take place within the twin-screw extruder while the composition is mixing. The product is forced through a profile die mounted at the exit of the extruder and formed into the shape of the desired component. The maximum rate of mixing tends to be a function of the heat transfer efficiency, the conveying capacity of the screws, and the mechanical strength of the extruder.
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Eswaran Vetkav Rajagopalan
Handa Pawan Kumar
Kiehl Christopher
Magnus Fredrick Lewis
The Goodyear Tire & Rubber Company
Vargot Mathieu D.
Wheeler David E.
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