Adjustable extrusion apparatus for producing thread-like product

Details Adjustable extrusion apparatus for producing thread-like product Adjustable extrusion apparatus for producing thread-like product

1973-01-31

1976-01-13

Husar, Francis S.

Plastic article or earthenware shaping or treating: apparatus

Stock pressurizing means operably associated with downstream...

Centripetal elastic melt extruder type

425465, 425466, B29F 304, B29D 100

Patent

active

039320901

ABSTRACT:
Extruded articles having integral ribs and/or integral rows of spaced apart elements extending transverse to the direction of extrusion are formed by forcing a melt flowable material such as a thermoplastic polymer through an extrusion opening. The material is continuously extruded in a first lateral or annular extrusion zone in the extrusion opening while the material being extruded in a second lateral or annular extrusion zone, which is contiguous with the first zone, is periodically interrupted, modulated and/or restricted.

REFERENCES:
patent: 2578229 (1951-12-01), Clement et al.
patent: 3280847 (1966-10-01), Chisholm et al.
patent: 3358329 (1967-12-01), Martin et al.
patent: 3422648 (1969-01-01), Lemelson
patent: 3461499 (1969-08-01), Nevin et al.

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