Device for producing hollow shaped plastic articles

Details Device for producing hollow shaped plastic articles Device for producing hollow shaped plastic articles

B - Operations, Transporting

29

C

18/680

B29C 45/00 (2006.01) B29C 45/17 (2006.01)

Patent

CA 2008093

A B S T R A C T (Fig. 1) This invention relates to a device for producing hollow shaped plastic articles by injection molding the device comprising a nozzle (10) having a firstinlet opening for melted plastic from the injection molding machine and a secondinlet opening for a gas, means for directing gas into the melted plastic and an outlet opening for the gas and for the melted plastic, the outlet opening via a gate being connectable with a mold space. The second inlet opening com- municates via a conduit (28) with a gas accumulator (29) having a constant volume and in which the gas has a mainly constant pressure. Said connection also has a variable throttle (32) by means of which the gas flow through the conduit can be adjusted.

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