METHOD FOR CO-EXTRUDING A COMPLEX RUBBER PROFILE INTENDED FOR MANUFACTURING A TYRE
A method is provided for the co-extrusion of a complex rubber profiled element. The method makes it possible to co-extrude a sublayer in a first material and a tread in a second material with at least one insert in a third material inserted in a discontinuity in the sublayer and in the tread. The me...
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Format: | Patent |
Sprache: | eng ; fre ; ger |
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Zusammenfassung: | A method is provided for the co-extrusion of a complex rubber profiled element. The method makes it possible to co-extrude a sublayer in a first material and a tread in a second material with at least one insert in a third material inserted in a discontinuity in the sublayer and in the tread. The method includes: a) discontinuous extrusion of the first material, b) discontinuous first profiling of the first material, c) discontinuous extrusion of the second material onto the first material, d) discontinuous profiling of the first and second materials and extrusion of the third material into each discontinuity, and e) final profiling of the first, second and third materials with a longitudinal groove in the profiled element next to each insert of the third material. |
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