Process and a device for cooling a pipe during its manufacture b

Details Process and a device for cooling a pipe during its manufacture b Process and a device for cooling a pipe during its manufacture b

1994-02-23

1995-06-06

Thurlow, Jeffery R.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

2642097, 26421118, 264237, 264348, 425 71, 4253791, B29C 4788

Patent

active

054220637

ABSTRACT:
The invention proposes an improved process and a device for cooling the internal surface of the wall of a pipe made of plastic during its manufacture by extrusion. The cooling agent is dispersed on the internal surface of the pipe by successive atomization at given time intervals. The cooling agent is advantageously dispersed by means of an injection which is displaced axially inside the pipe in a reciprocating movement. The injector may be advantageously equipped with means providing a rotating cone of dispersed droplets.

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