Plastic article or earthenware shaping or treating: apparatus – Means feeding fluent stock from plural sources to common... – Extrusion shaping means
Patent
1982-12-06
1984-08-14
Thurlow, Jeffery R.
Plastic article or earthenware shaping or treating: apparatus
Means feeding fluent stock from plural sources to common...
Extrusion shaping means
264 459, 264173, 2642098, 4251331, 425462, B29F 304
Patent
active
044654499
ABSTRACT:
Coextrusion feedblock apparatus for making multilayer, lightweight pipe wherein means are provided to convert thermoplastic material into pipe or tubing having a plurality of layers. Means are provided for adjusting the feedblock apparatus to assure thickness uniformity of the inner layer of the pipe or tubing and further, means are provided for adjusting overall wall thickness of the multilayer pipe or tubing.
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Borg-Warner Chemicals, Inc.
Schlott Richard J.
Thurlow Jeffery R.
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