Arrangement with an extrusion die of an extruder

Details Arrangement with an extrusion die of an extruder Arrangement with an extrusion die of an extruder

2005-04-28

2008-05-06

Gupta, Yogendra (Department: 1791)

Plastic article or earthenware shaping or treating: apparatus

Stock pressurizing means operably associated with downstream...

Plural orifices

C425S067000, C425S311000, C425S463000, C425S464000

Reexamination Certificate

active

07367792

ABSTRACT:
The invention relates to an arrangement with an extrusion die (1) of an extruder for granulating plastic material with several pass-through openings (4) for allowing the passage of plastic melt, and a granulating die plate (2) with holes (3) arranged on its die face (1′), with the pass-through openings (4) each opening into a separate nozzle-like projection (6) protruding beyond the front die face (1′) of the extrusion die (1), with the free cross section of the holes (3) being larger than the outside circumference of the projections (6) for the contactless reception of the nozzle-like projections (6) in the holes (3) of the granulating die plate (2) by forming a clearance (7), and with an elastic sealing material (10) being arranged between a front face surface (8) of the nozzle-like projection (6) and a supporting element joined with the granulating die plate (2), preferably a holding flange (2′) of the granulating die plate (2). In order to create advantageous conditions it is proposed that the nozzle-like projections (6) comprise a web (12) projecting beyond its face surface (8) at each of its inner sides delimiting the pass-through opening (4).

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patent: 1 510 391 (1967-12-01), None

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