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US 2017/0321376 A1Published application
Splitting method
AssigneesCompagnie Generale Des Etablissements Michelin, Michelin Recherche et Technique S.A.
InventorsMARC CALVET, HENRI BARGUET, FRANCIS AUBAREDE
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Abstract
The method allows the manufacture of at least first and second assemblies (26, 28) of M1 filamentary elements and M2 filamentary elements, at least one of the first and second assemblies (26, 28) comprising several filamentary elements (14) wound together in a helix. The method comprises a step of assembling M filamentary elements (14) together into a layer of the M filamentary elements (14) around a temporary core (16) to form a temporary assembly (22), and a step of splitting the temporary assembly (22) into at least the first and second assemblies (26, 28) of M1 filamentary elements and M2 filamentary elements.
Claims16
1-15:
- (canceled)
16:
- A method for manufacturing at least first and second assemblies of M1 filamentary elements and M2 filamentary elements, at least one of the first and second assemblies including a plurality of filamentary elements wound together in a helix, the method comprising steps of:
- assembling M filamentary elements together into a layer of the M filamentary elements around a temporary core, to form a temporary assembly;
- and
- splitting the temporary assembly into at least the first and second assemblies of M1 filamentary elements and M2 filamentary elements.
1 more element
17:
- The method according to claim 16, wherein the step of splitting the temporary assembly includes separating the temporary core from the first and second assemblies.
18:
- The method according to claim 16, wherein, during the step of splitting the temporary assembly, the first assembly is separated from a temporary collection formed of the second assembly and the temporary core, and then the second assembly and the temporary core are separated from each other.
19:
- The method according to claim 16, further comprising a step of recycling the temporary core, wherein, during the step of recycling:
- the temporary core is recovered downstream of the step of splitting the temporary assembly, and
- the temporary core, after being recovered, is introduced upstream of the step of assembling the M filamentary elements.
20:
- The method according to claim 16, wherein the step of splitting the temporary assembly includes splitting the temporary core between at least the first and second assemblies.
21:
- The method according to claim 20, wherein, during the step of splitting the temporary assembly, at least a first part of the temporary core with first filamentary elements is split from the temporary assembly so as to form the first assembly.
22:
- The method according to claim 21, wherein, during the step of splitting the temporary assembly, at least a second part of the temporary core with second filamentary elements is split from the temporary assembly so as to form the second assembly.
23:
- The method according to claim 22, wherein, before the step of splitting the temporary assembly, the temporary core includes the first and second parts.
24:
- The method according to claim 16, wherein, in the step of assembling the M filamentary elements, twisting is performed.
25:
- The method according to claim 16, further comprising a step of twist-balancing the temporary assembly.
26:
- The method according to claim 16, wherein no step of individually preforming each of the filamentary elements is included in the method.
27:
- A single-helix assembly comprising a layer formed of a plurality of filamentary elements wound together in a helix, wherein
- the assembly has a structural elongation greater than or equal to 2.0% measured in accordance with a standard described in ASTM A931 08, and
- the assembly is obtained according to a method for manufacturing at least first and second assemblies of M1 filamentary elements and M2 filamentary elements, at least one of the first and second assemblies including a plurality of filamentary elements wound together in a helix, the method including steps of:
- assembling M filamentary elements together into a layer of the M filamentary elements around a temporary core, to form a temporary assembly, and
- splitting the temporary assembly into at least the first and second assemblies of M1 filamentary elements and M2 filamentary elements.
2 more elements
28:
- The assembly according to claim 27, wherein each filamentary element of the layer exhibits torsion about an axis of revolution of the filament.
29:
- The assembly according to claim 27, wherein each filamentary element of the layer exhibits no preforming marks.
30:
- A tire comprising an assembly of filamentary elements, the assembly being a single-helix assembly that includes a layer formed of a plurality of filamentary elements wound together in a helix, wherein
- the assembly has a structural elongation greater than or equal to 2.0% measured in accordance with a standard described in ASTM A931 08, and
- the assembly is obtained according to a method for manufacturing at least first and second assemblies of M1 filamentary elements and M2 filamentary elements, at least one of the first and second assemblies including a plurality of filamentary elements wound together in a helix, the method including steps of:
- assembling M filamentary elements together into a layer of the M filamentary elements around a temporary core, to form a temporary assembly, and
- splitting the temporary assembly into at least the first and second assemblies of M1 filamentary elements and M2 filamentary elements.
2 more elements