Apparatus for manufacturing large-volume hollow bodies of plasti

Details Apparatus for manufacturing large-volume hollow bodies of plasti Apparatus for manufacturing large-volume hollow bodies of plasti

1990-04-17

1991-10-08

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

Means feeding fluent stock from plural sources to common...

Extrusion shaping means

425381, 425462, 425467, B29C 4706

Patent

active

050550233

ABSTRACT:
An apparatus for manufacturing large-volume hollow bodies of plastics material with multiple-layer walls. The apparatus defines an accumulation chamber and has a nozzle outlet. A plurality of material layers are joined into a multiple-layer plastic material melt within a tubular plunger which is movable in axial direction of the apparatus. The multiple-layer plastics material melt is conducted in a flow duct which widens in the shape of a funnel toward the accumulation chamber. The tubular plunger is forced by the melt to move in axial direction away from the nozzle outlet. The material melt is ejected as a multiple-layer extruded material by moving the tubular plunger in axial direction toward the nozzle outlet.

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