Apparatus for injection molding multi-layer articles
AssigneePechiney Emballage Flexible Europe
InventorsFrederick G. Kudert, Maurice G. Latreille, Robert J. McHenry, George F. Nahill, Henry Pfutzenreuter, III, William A. Tennant, Thomas T. Tung, John Vella, Jr.
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Abstract
An injection nozzle device including multi-polymer injection nozzles comprising an assembly of shells, and having fixed, tapered passageways communicating with annular orifices close to a nozzle gate and to each other, and polymer flow balancing and directing means in the passageways in the form of concentric and eccentric chokes.
Claims43
An injection molding machine for simultaneously injection molding a plurality of articles each made of a plurality of polymeric materials, comprising:
- at least eight injection nozzles, each of said injection nozzles having an associated injection cavity mold;
- each of said injection nozzles having plural passages therein for feeding one or more streams of each of the polymeric materials to said molds;
- and
- a manifold, associated with said injection nozzles, for feeding at least one stream of polymeric material to each of said injection nozzles simultaneously.
An injection molding machine for simultaneously injection molding a plurality of articles each made of a plurality of polymeric materials, comprising:
- at least eight injection nozzles, each of said injection nozzles having an associated injection cavity mold;
- each of said injection nozzles also having a first flow channel for providing a stream of a first polymeric material to said mold and a second flow channel for providing a stream of a second polymeric material to said mold;
- a manifold associated with said injection nozzles;
- wherein said polymeric materials are fed through said manifold and to each of said injection nozzles and each of said associated molds, such that each of said streams of said first polymeric material flows from said manifold to each injection nozzle and into each associated mold simultaneously.
Dependencies are inferred from the claim text.