Apparatus for the recovery of thermoplastic from piping for repr

Details Apparatus for the recovery of thermoplastic from piping for repr Apparatus for the recovery of thermoplastic from piping for repr

1981-07-09

1983-10-11

Czaja, Donald E.

Plastic article or earthenware shaping or treating: apparatus

Preform severing means

Diverse severing means

264 37, 264143, 425307, 425315, A23P 100

Patent

active

044089767

ABSTRACT:
A process for preparing thermoplastic piping for recovery of the thermoplastic in which the piping is cut into a continuous spiral ribbon with straightening of this ribbon to be without substantial curvature and cutting of the straightened ribbon into pieces. Preferably, the process produces pieces of thermoplastic of sufficiently small size to be suitable for feeding to an extruder. An apparatus for preparing thermoplastic piping for recovery of the thermoplastic which combines means for cutting the thermoplastic piping into a continuous spiral ribbon with means for straightening the spiral ribbon so that it is without substantial curvature and means for cutting the straightened ribbon into pieces.

REFERENCES:
patent: 2313986 (1943-03-01), Brown
patent: 3157079 (1964-11-01), Harper
patent: 3557268 (1969-02-01), Beretta et al.
patent: 4025598 (1977-05-01), Sasshofer et al.
patent: 4075916 (1978-02-01), Fisher
patent: 4292266 (1981-09-01), Weder et al.

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