Resilient sole and method for manufacturing same
OwnerOlivier PRUD'HOMME, Said SEGHARinventors
Life of this patent
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Abstract
Resilient sole 1 which is attached to a concrete layer (2) or which is positioned between a concrete layer (2) and ballast (3), and which is formed by a layer (4) of recycled rubber, in the revulcanised state after devulcanisation, and a layer (5) of structured fibres which is arranged so as to be in contact with the rubber layer, the fibres being partially impregnated in the rubber layer and having a free thickness (8) of structured fibres, assembly comprising the sole and method for manufacturing same.
Claims18
A resilient sole, arranged in particular to be attached to a concrete layer or positioned between a concrete layer and a ballast, comprising:
- a recycled rubber layer, in the revulcanised state after devulcanisation, and a layer of structured fibres, arranged in contact with the rubber layer, said fibres being partially impregnated in said rubber layer and having a free thickness of structured fibres.
An assembly, comprising:
- a concrete layer;
- and
- a resilient sole, comprising a recycled rubber layer, in the revulcanised state after devulcanisation, and a layer of structured fibres, arranged in contact with the rubber layer, said fibres being partially impregnated in said rubber layer and having a free thickness of structured fibres, wherein said structured fibres are further partially impregnated on the free thickness of structured fibres in said concrete layer.
A method for manufacturing a resilient sole comprising:
- devulcanising recycled rubber, including formation of a devulcanised recycled rubber mass,
- adding at least one devulcanised recycled rubber additive,
- superpositioning a layer of structured fibres and devulcanised recycled rubber, including obtaining of two superposed layers,
- hot pressing said two superposed layers at a temperature of between 100 and 180° C. during a predetermined time interval with revulcanisation of the devulcanised recycled rubber and formation of a resilient sole where the structured fibres are at least partially impregnated in said rubber layer during revulcanisation, by forming a revulcanised rubber-fibre interphase.
Dependencies are inferred from the claim text.