Adjustable pipe extrusion die with internal cooling

Details Adjustable pipe extrusion die with internal cooling Adjustable pipe extrusion die with internal cooling

1988-02-25

1988-12-06

Nozick, Bernard

Plastic article or earthenware shaping or treating: apparatus

Means feeding fluent stock from plural sources to common...

Extrusion shaping means

425549, 425552, 425403, 425463, 425466, A21C 300

Patent

active

047893273

ABSTRACT:
An extrusion die, particularly for double-walled thermoplastic pipes, includes an extrusion head, a nozzle, two concentric hollow mandrels carrying die lips and an additional cooling mandrel. The lips have threaded adjusting members to vary the sizes of the die gaps, the lips for the inner wall being provided with electrical heaters. The concentric mandrels have a spider with members for its radial adjustment. The cooling mandrel has substantially annular channels for a coolant, comunicating with each other by means of a sharply skewed opening and combined into a number of sections to control intensity of heat exchange.

REFERENCES:
patent: 3241503 (1966-03-01), Schafer
patent: 3907961 (1975-09-01), Carrow
patent: 4182603 (1980-01-01), Knittel
patent: 4305703 (1981-12-01), Lupke et al.
patent: 4500284 (1985-02-01), Lupke
patent: 4510013 (1985-04-01), Lupke
patent: 4522775 (1985-06-01), Briggs et al.
patent: 4578025 (1986-03-01), Ando et al.

Affiliated with

Also associated with

Rating

Adjustable pipe extrusion die with internal cooling does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Adjustable pipe extrusion die with internal cooling, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Adjustable pipe extrusion die with internal cooling will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1491818