Method and apparatus for extrusion, particularly for extruding m

Details Method and apparatus for extrusion, particularly for extruding m Method and apparatus for extrusion, particularly for extruding m

1987-07-10

1989-04-11

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Production of continuous or running length

264141, 264148, 425 721, 425106, 425311, 426516, 426518, B29B 906

Patent

active

048204706

ABSTRACT:
The mass to be extruded is forced into an extrusion duct (die) (1) so as to make it emerge in the extruded state from the outlet end (3) of the duct in a direction (2) generally-axial of the duct itself. An annular flow of fluid is generated around the outlet end (3) of the extrusion duct (1), oriented in an axial direction relative to the extrusion duct (1), and surrounds the extruded mass, preventing it from bending accidentally. The extruded mass is divided into pieces by a cutting operation (9) carried out within (7) the zone in which the annular flow of fluid acts.

REFERENCES:
patent: 2149920 (1939-03-01), Kretchmer
patent: 3527851 (1970-09-01), Bulgin
patent: 3767748 (1973-10-01), Rosette
patent: 3981959 (1976-09-01), Cuff
patent: 4038002 (1977-07-01), Inaba et al.
patent: 4151251 (1979-04-01), Kropa
patent: 4321026 (1982-03-01), Lambertus

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