Document Type and Number:
Japanese Patent JPS5010869
Kind Code:
A
Abstract:
An apparatus for continuously forming a foamed thermoplastic profile including an extruder having a die attached to the outlet end thereof. A rotatable screw is disposed within the extruder and a mandrel is secured to the downstream end of the screw. The screw extends towards the outlet of the die. The mandrel and die cooperatively define an annular outlet orifice to produce a tubular shaped parison. Adjacent to the annular outlet is a sizing apparatus to properly size and shape the tubular parison.
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Application Number:
JP4320474A
Publication Date:
February 04, 1975
Filing Date:
April 16, 1974
Export Citation:
International Classes:
B29C69/00; B29B7/00; B29C44/46; B29C44/50; B29C48/33; B29C48/515; B29C48/85; B29C48/90; B29C48/92; B29D1/00; (IPC1-7): B29F3/06
Domestic Patent References:
| JPS4813458A |