Method of and apparatus for treating the outer surface and inner

Details Method of and apparatus for treating the outer surface and inner Method of and apparatus for treating the outer surface and inner

1977-02-24

1979-07-03

Thurlow, Jeffery R.

Plastic article or earthenware shaping or treating: apparatus

Including means advancing continuous length work through...

264565, 264209, 264210R, 425 72R, 4253261, 4253871, B29C 1707

Patent

active

041598890

ABSTRACT:
A method of treating the outer surface of a pipe of a thermoplastic resinous material produced by extrusion by extruding molten resin from an extruder and sizing the same by a sizing die, and supplying a lubricant to a front end portion of the sizing die along the front end portion which is disposed in spaced juxtaposed relationship with the extruder.
An apparatus for treating the outer surface of a pipe of a thermoplastic resinous material produced by extrusion including a sizing die for sizing the pipe extruded from an extruder for extruding a thermoplastic resin in tubular form, and lubricant supply means disposed at a front end portion of the sizing die in spaced juxtaposed relationship with the extruder for supplying a lubricant along the front end portion of the sizing die.

REFERENCES:
patent: 2616126 (1952-11-01), Merck et al.
patent: 3088167 (1963-05-01), Corbett
patent: 3264384 (1966-08-01), Settele
patent: 3275723 (1966-09-01), Cappuccio
patent: 3388425 (1968-06-01), Detter
patent: 3517097 (1970-06-01), Mixell et al.
patent: 3522337 (1970-07-01), Ball
patent: 3538210 (1970-11-01), Gatto
patent: 3699199 (1972-10-01), MacDuff
patent: 3812230 (1974-05-01), Takahashi

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