Apparatus for manufacturing plastic tubes from plastics of dissi

Details Apparatus for manufacturing plastic tubes from plastics of dissi Apparatus for manufacturing plastic tubes from plastics of dissi

1976-11-24

1978-10-17

Husar, Francis S.

Plastic article or earthenware shaping or treating: apparatus

Means feeding fluent stock from plural sources to common...

Extrusion shaping means

264241, 425192R, 425376B, 425381, 425462, 425466, B29D 2304

Patent

active

041206282

ABSTRACT:
An apparatus for extruding plastic tubes, which may be substantially rigid, semi-flexible, or flexible, as desired. A spiral or helical tape or filament is extruded, simultaneously with a plastic tube, whereby the resulting final product comprises a reinforcing helical skeleton, and an integral tube covering. The spiral or helical tape or filament is rotated as it is extruded, whereby the filament may be close together or relatively spacially separated, during extrusion, as for example, in the manufacture of a flexible hose. The diameter of the finished product can be readily varied, by simply adjusting the size of the extrusion collar. The reinforced tube manufactured according to the process and with the apparatus is strong, smooth, and relatively inexpensive.

REFERENCES:
patent: 3520966 (1970-07-01), Soffiantini
patent: 3528130 (1970-09-01), Lefevre et al.

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