Extrusion head for tubular bodies and hollow profiles

Details Extrusion head for tubular bodies and hollow profiles Extrusion head for tubular bodies and hollow profiles

1983-05-13

1985-04-09

Thurlow, Jeffery

Plastic article or earthenware shaping or treating: apparatus

With upstream screen or perforated plate for straining,...

2642098, 425380, 425467, B29F 304

Patent

active

045099073

ABSTRACT:
An extrusion head for producing hollow profiles such as thick-wall large diameter PVC pipe has its flow channel divided by a hollow mandrel into two coaxial portions of a flow cross section greater than that of the common portion of the flow channel downstream of these coaxial portions and running through the mouth of the head. According to the invention, the flow channel progressively diminishes the flow section over the length thereof at least from the plate at which the coaxial portions start to eliminate structural defects caused by failure of the streams of synthetic resin to adequately merge.

REFERENCES:
patent: 2141776 (1938-12-01), Vautier et al.
patent: 2345086 (1944-03-01), Becker et al.
patent: 3146495 (1964-09-01), Sanford
patent: 3266092 (1966-08-01), Corbett
patent: 3357050 (1967-12-01), Criss
patent: 3709645 (1973-01-01), Mraz
patent: 3899276 (1975-08-01), Sokolow
patent: 4045154 (1977-08-01), Ratheiser
patent: 4054403 (1977-10-01), Hornbeck et al.
patent: 4063865 (1977-12-01), Becker
patent: 4157194 (1979-06-01), Takahashi

Affiliated with

Also associated with

Rating

Extrusion head for tubular bodies and hollow profiles does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Extrusion head for tubular bodies and hollow profiles, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Extrusion head for tubular bodies and hollow profiles will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1167497