Apparatus for forming spirally wound pipe

Details Apparatus for forming spirally wound pipe Apparatus for forming spirally wound pipe

1984-02-24

1985-06-04

Weston, Caleb

Adhesive bonding and miscellaneous chemical manufacture

Surface bonding means and/or assembly means therefor

Longitudinally progressive helical winding means

156143, 156189, 156195, 15624413, 156446, 156500, B29D 2304

Patent

active

045212708

ABSTRACT:
An apparatus for producing spirally wound thermoplastic pipe. The apparatus has a helical track and a series of independent moldblocks that run in the track to provide a mandrel surface that rotates and advances axially. A band of thermoplastic material is extruded onto the mandrel surface and wound on the surface in an overlapping helix. The apparatus is equipped with a moldblock return mechanism that receives blocks from the downstream end of the track and returns them to the upstream end, so that unlimited lengths of pipe can be produced.

REFERENCES:
patent: 3655489 (1972-04-01), Poulson
patent: 3837970 (1974-09-01), Medrano
patent: 4174984 (1979-11-01), Meadows
patent: 4213811 (1980-07-01), Hall et al.

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