Reinforced tubing manufacture by a plastic processing screw mach

Details Reinforced tubing manufacture by a plastic processing screw mach Reinforced tubing manufacture by a plastic processing screw mach

1997-01-06

1998-12-22

Timm, Catherine

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Producing multilayer work or article

264103, 26417112, 264515, 425113, B29C 4706

Patent

active

058514775

ABSTRACT:
The invention comprises a plasticating machine for the working and forcing of plastic material into a mold, said machine including an elongated housing having a first or proximal end and a second or distal end and an elongated screw shaft with a screw flight therearound, the screw shaft being rotatably supported in the elongated housing, for the working of plastic between the screw shaft and the elongated housing. At least one pair of coaxial spaced apart delivery conduits are generally longitudinally arranged through the screw shaft, from a proximal end to a distal tip end thereof. A tubular mesh generating apparatus is arranged at the distal end of the coaxially conduits to generate/weave and feed a tubular reinforcement mesh along the length of the annular delivery channel to a plastic melt at its distalmost end. A movable forming tool is supported adjacent the distal end of the innermost conduit of the coaxial conduits. The mesh is arranged to be movable with respect to the screw shaft and over the forming tool, to engage any thermoplastic material being driven from between the screw shaft and the barrel housing to form a reinforced tubular product such as a pipe or tube, as it is driven through a die at the distal end of the machine.

REFERENCES:
patent: 466910 (1892-01-01), Royle et al.
patent: 815571 (1906-03-01), Williams
patent: 3296659 (1967-01-01), Okazaki
patent: 3566753 (1971-03-01), Mantke
patent: 4172106 (1979-10-01), Lewis
patent: 4472126 (1984-09-01), Mitsui et al.
patent: 4517039 (1985-05-01), Satzler

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