Plastic article or earthenware shaping or treating: apparatus – Female mold and charger to supply fluent stock under... – With means between charger and mold to cut off flow of...
Patent
1997-01-27
1998-09-22
Heitbrink, Tim
Plastic article or earthenware shaping or treating: apparatus
Female mold and charger to supply fluent stock under...
With means between charger and mold to cut off flow of...
425566, B29C 4523
Patent
active
058111409
ABSTRACT:
A needle valve nozzle (1) with a nozzle housing (3), a needle valve (10) arranged axially displaceably in it in the center, and a needle guide (4) constructed as a bushing, has its material feed channel (5) completely in the interior of this needle guide (4). The needle guide (4) has a corresponding radial dimension on the face (11) of the needle valve nozzle (1) and of the nozzle housing (3), and jointly forms the face (11). It is furthermore provided that this bushing-like needle guide (4) has an insulating spacing from nozzle housing (3), in particular on its exterior, preferably with the aid of an air gap, so that a heat outflow though the nozzle housing (3) and its abutment (16) is largely ruled out.
REFERENCES:
patent: 4705473 (1987-11-01), Schmidt
patent: 4832593 (1989-05-01), Brown
patent: 5288225 (1994-02-01), Schmidt et al.
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