Process and apparatus for producing plastic pipe
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 15, 1985
Issued Date -
N/A
app pub date -
Dec 31, 1981
filing date -
Aug 17, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An improved ram extruder for the production of plastic pipe, especially plastic pipe of high molecular weight low pressure polyethylene, which comprises an extrusion die, heating means for heating polymer to be extruded, a ram which is reciprocated in the extrusion die, means for reciprocating said extrusion die and a mandrel which determines the inside diameter of plastic pipe to be extruded, the mandrel being rigidly connected with the ram. Also disclosed is a process for ram extruding plastic pipe by the use of such a ram extruder, especially a process for the formation of plastic pipe of high molecular weight low pressure polyethylene of molecular weight of more than 500,000. A pipe or tube of high molecular weight low pressure polyethylene of molecular weight more than 500,000 is also disclosed together with its use as a liner for a steel pipe.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully