Method for determining sagging of melt of a tube extruded in an extrusion device
AssigneeSikora AG
InventorHarald Sikora
Life of this patent
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Abstract
A method for determining sagging of melt of a tube extruded in an extrusion device includes structuring a measuring device to rotate about the tube. The measuring device is configured to measure a wall thickness of the tube over a circumference of the tube and determine a wall-thickness profile over the circumference of the tube from the measured wall thicknesses. The wall-thickness profile includes a frequency and an amplitude. The method further includes determining a sagging of the melt from at least one of (i) the frequency and (ii) the amplitude of the wall-thickness profile.
Claims17
1-16. (canceled)
A method for determining sagging of melt of a tube extruded in an extrusion device, comprising:
- structuring a measuring device to rotate about the tube, wherein the measuring device is configured to,
- measure a wall thickness of the tube over a circumference of the tube,
- determine a wall-thickness profile over the circumference of the tube from the measured wall thicknesses, wherein the wall-thickness profile includes a frequency and an amplitude, and
- determine a sagging of the melt from at least one of (i) the frequency and (ii) the amplitude of the wall-thickness profile.
Dependencies are inferred from the claim text.