Plastic and nonmetallic article shaping or treating: processes – Orienting or aligning solid particles in fluent matrix material
Patent
1995-01-06
1997-06-17
Thurlow, Jeffery R.
Plastic and nonmetallic article shaping or treating: processes
Orienting or aligning solid particles in fluent matrix material
264167, 26417128, 26417129, 2642092, 264312, 4251331, 604264, B29C 4724
Patent
active
056394098
ABSTRACT:
The method for manufacturing a tube-like extrusion profile includes the steps of: simultaneously conveying a number of, in the circumferential direction of the profile, divided streams of material of at least two different compositions to a molding-nozzle; and, making the streams flow together in the molding-nozzle. At least one of the streams is supplied rotating in a circumferential direction. Preferably at least two streams of material are supplied rotating in opposite directions, so that at least two helically shaped bands of material extend in opposite directions in the extrusion profile. The method also includes the step of: allowing the combined streams of material to cool off into the extrusion profile so that the streams of material supplied in a rotating manner extend helically in the extrusion profile formed by the method.
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Cordis Corporation
Thurlow Jeffery R.
Vigil Thomas R.
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