Plastic and nonmetallic article shaping or treating: processes – Forming continuous or indefinite length work – Shaping by extrusion
Patent
1981-11-19
1984-05-22
Thurlow, Jeffery R.
Plastic and nonmetallic article shaping or treating: processes
Forming continuous or indefinite length work
Shaping by extrusion
264558, 264108, 264202, 264310, 264312, 425376B, 425380, 425381, 425466, 425467, B29D 2304
Patent
active
044501315
ABSTRACT:
This relates to a die assembly for extruding tubular casing films wherein there are counter-rotating die members. One of the die members is mounted for shifting relative to its base under the influence of hydrodynamic pressures of the flowing extrudate so as to be self-centering relative to the other die member. This provides for a high shear cylindrical area leading into the die orifice which is of uniform thickness and which will provide for uniform fiber orientation due to the zero runout of the rotating dies.
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Crossetta William J.
Dunn Michael L.
Ellis Howard M.
Teepak, Inc.
Thurlow Jeffery R.
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