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US 12,662,754 B2Granted
Extrusion apparatus for turf fiber monofilament
AssigneePolytex Sportbelage Produktions-GmbH
InventorsStephan Sick, Sven Hamann, Dario Grochla, Dirk Sander
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Abstract
An extrusion apparatus suitable for manufacturing artificial turf polymer fiber, in particular from LLDPE that is free of fiber splitting, wherein the extrusion apparatus is characterized in that a ratio of an equivalent diameter of the nozzle outlet over an axial length of the inner channel of the nozzle is from 0.90 to 1.10, or from 0.95 to 1.05.
Claims15
An extrusion apparatus suitable for manufacturing artificial turf polymer fiber free of fiber splitting, the extrusion apparatus comprising an extrusion head comprising:
- an inlet for receiving a polymer material,
- a nozzle, and
- a nozzle outlet,
- wherein the nozzle is in hydraulic connection with the inlet and the nozzle outlet, and
- wherein a ratio of an equivalent diameter of the nozzle outlet over an axial length of an inner capillary channel of the nozzle is from 0.90 to 1.10,
- wherein the equivalent diameter is the diameter of a circle-shape cross-section nozzle outlet having a same area as an area of an actual cross-section of the nozzle outlet.
3 more elements
Dependencies are inferred from the claim text.