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US 2023/0356448 A1Published application
System and method for extruding complex profiles from elastomer mixtures
AssigneeCompagnie Generale Des Etablissements Michelin
InventorsHenri HINC, Arnaud Letocart, Christophe Ougier
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Abstract
The extrusion installation is configured for manufacturing a complex profiled-element strip, such as a tread, based on elastomer compounds by co-extrusion, and comprises multiple extruders feeding elastomer compounds to an extrusion head. The extrusion head receives a proportion of elastomer compound of between 2 and 25% of the total volumetric throughput of the installation from at least one Archimedean-screw extruder and the rest from positive-displacement extruders.
Claims17
A method of making a strip of a profiled element, comprising the steps of:
- preparing a plurality of extruders that are operably connected with an extrusion head, the plurality of extruders including at least one Archimedean-screw extruder and at least one positive-displacement extruder;
- feeding multiple elastomer compounds to an extrusion head with the plurality of extruders;
- and
- wherein between 2 and 25% of a total volumetric throughput of the multiple elastomer compounds in the elastomer head is delivered to the extrusion head by the at least Archimedian-screw extruder and the remainder of the total volumetric throughput is delivered to the extrusion head by the at least one positive-displacement extruder.
1 more element
Dependencies are inferred from the claim text.