Velocity profiling in an extrusion apparatus

Details Velocity profiling in an extrusion apparatus Velocity profiling in an extrusion apparatus

1999-01-11

2000-04-25

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

With measuring, testing, or inspecting

Controlling rate of movement of molding material or its...

425145, 425375, 4253761, B29C 4102, B29C 4152, B29C 4792

Patent

active

06054077&

ABSTRACT:
An apparatus has an extrusion head for extruding a bead of a liquified material at an extruded pump flow rate, an extrusion head motor for driving the extrusion head at a variable head velocity, a pump for providing liquified material to the extrusion head, and a control for providing control signals to both the extrusion head motor and the pump. The control signals control operation of the extrusion head and the pump so that the head velocity is slaved to an estimated profile of the extruded pump flow rate divided by a predetermined bead cross-sectional area.

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patent: 5503785 (1996-04-01), Crump et al.
patent: 5587913 (1996-12-01), Abrams et al.
patent: 5968561 (1999-10-01), Batchelder et al.

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