Stripping plastic pipe from a mandrel

Details Stripping plastic pipe from a mandrel Stripping plastic pipe from a mandrel

1977-10-17

1979-04-17

Powell, William A.

Adhesive bonding and miscellaneous chemical manufacture

Differential fluid etching apparatus

With microwave gas energizing means

156154, 156584, B32B 108

Patent

active

041499220

ABSTRACT:
Plastic pipe is removed from a mandrel by forming two circumferential grooves of different depth in the pipe wall, attaching a holding means to the pipe where the holding means has projections which fit into the grooves, and then applying an axial force to the holder. This method prevents damage to the mandrel and the pipe.

REFERENCES:
patent: 2361026 (1944-10-01), Greene
patent: 3237294 (1966-03-01), Brandeberry
patent: 3519520 (1970-07-01), Newman, Jr.
patent: 3616063 (1971-10-01), Bradley
patent: 3684602 (1972-08-01), Ball

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