Plastic article or earthenware shaping or treating: apparatus – Means feeding fluent stock from plural sources to common... – Extrusion shaping means
Patent
1993-12-13
1999-05-25
Vargot, Mathieu D.
Plastic article or earthenware shaping or treating: apparatus
Means feeding fluent stock from plural sources to common...
Extrusion shaping means
4251331, 425308, 425311, 425463, B29C 4706
Patent
active
059068388
ABSTRACT:
A multiple-orifice co-extrusion manifold is disclosed for use in high-volume, cost-efficient extrusion of multi-layered products, such as center-filled food products. A flow path is provided for each substance to be extruded. For each extrudable substance, the flow path between its extruder and each of a plurality of extrusion orifices is sufficiently equal to the other flow paths for that substance, that a substantially uniform distribution and volumetric flow is obtained at each orifice without the need for individual adjustment apparatus. Within the manifold, the flow paths preferably comprise a generally symmetrical chamber for flowing a first extrudate and a plurality of tubes, for flowing a second substance. The tubes extend through the chamber in a generally symmetrical relationship to each other and to the chamber. Each flow path is thus generally equal and symmetrical to the other flow paths. The two substances are co-extruded as continuous, radially-layered products and are subsequently divided into pre-determined lengths by a series of blades mounted on an extrudate inlet pipe and rotating about the manifold.
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Keehn William T.
Molski Theodore J.
Morphey Edwin L.
The Quaker Oats Company
Vargot Mathieu D.
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