Method and device for the manufacture of annular extrudates
AssigneePromix Solutions AG
InventorsRolf Heusser, Frank van Lück
Life of this patent
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Abstract
A device (4) for the manufacture of an annular extrudate comprises a jacket (2), a crosshead (1) arranged inside of the jacket. The jacket contains a melt passage, whereby the crosshead is arranged in the melt passage, such that the melt passage extends et least at the outlet of the device as an annular melt passage around the crosshead (1). An annular passage (5) is formed between the crosshead and the jacket. The annular passage contains a static mixer (3), whereby the crosshead is at least partially supported by the static mixer in the jacket. The static mixer comprises a plurality of inserts, whereby at least a portion of the inserts is connected to the crosshead and/or the jacket.
Claims16
A device for the manufacture of an annular extrudate to form a tube or hose when leaving the device, comprising a stationary jacket, a stationary crosshead arranged inside of the jacket, whereby the jacket contains a melt passage, whereby the crosshead is arranged in the melt passage, such that the melt passage extends at least at the outlet of the device as an annular melt passage around the crosshead, such that an annular passage is formed between the crosshead and the jacket, whereby the annular passage contains a static mixer, whereby the crosshead is supported by the static mixer in the jacket, such that the crosshead is fixed to the jacket by the static mixer, whereby the static mixer comprises a plurality of inserts, whereby at least a portion of the inserts is connected to the crosshead and the jacket, wherein a die element is arranged at the discharge end of the melt flow from the annular passage which is shaped as an annular nozzle.
Dependencies are inferred from the claim text.