Plastic and nonmetallic article shaping or treating: processes – Forming continuous or indefinite length work – Shaping by extrusion
Patent
1990-06-04
1992-04-07
Thurlow, Jeffrey
Plastic and nonmetallic article shaping or treating: processes
Forming continuous or indefinite length work
Shaping by extrusion
264540, 264565, 2642098, 264 405, 425141, 425532, 425581, 4253824, 425466, 425151, B29C 4722, B29C 4796, B29C 4904
Patent
active
051026023
ABSTRACT:
An improved adjustable diehead assembly for mounting on a plastic extrusion machine is described. A discharge orifice for a parison of plastic is formed by a mandrel and annular member. The annular member is moveable by a holder assembly perpendicular to axis of the mandrel to adjust the orifice. The holder assembly includes cams which act upon the opposed sections of the outside surface of the annular member to adjust the orifice when first and second screws are tightened. A third screw acts upon the annular member to adjust the orifice. The screws are mounted on a front part of the holder assembly on the diehead to allow adjustment of the orifice even when the extrusion machine is operating.
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McLeod Ian C.
Plastics USA Corporation
Thurlow Jeffrey
Vargot Mathieu
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