Plastic article or earthenware shaping or treating: apparatus – Distinct means to feed – support or manipulate preform stock... – Extrusion shaping means
Patent
1986-10-23
1989-01-17
Thurlow, Jeffery
Plastic article or earthenware shaping or treating: apparatus
Distinct means to feed, support or manipulate preform stock...
Extrusion shaping means
264173, 264515, 4251331, 425192R, 425380, 425462, 425467, 425532, 4253791, B29C 4706, B29C 4726, B29C 4728, B29C 4778
Patent
active
047985267
ABSTRACT:
A modular extrusion head is disclosed including a plurality of cross head die modules, each including a flow path for a single resin. Molten resin layers are flowed from the modules onto a stepped mandrel and then along the mandrel and out an extrusion die to form a multi-layer parison. The layers are thin, with a uniform thickness and hole free. The modules are temperature zoned to permit flowing of a low temperature resin to and along the mandrel in contact with a high temperature resin without impairing the properties of the low temperature resin.
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Briggs Milton
Teutsch Erich O.
General Electric Company
Graham Engineering Corporation
Hooker Thomas
Tentoni Leo B.
Thurlow Jeffery
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