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AssigneeDsm IP Assets B.V.
InventorsAntonius J.F.M. Courage, Marco J.A. Houben, Mathieu H.M. Mertens, Leonardus J.G. Raets
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The invention relates to a process for recovering monomeric units of a nylon from carpet material, said carpet material comprising fibres containing said nylon bound to a backing containing one or more non-nylon components, the carpet material containing between 15 and 35 wt. % of said nylon, which process comprises the steps of: a) mechanically separating the carpet material into an enriched carpet mixture containing between 35 and 55 wt. % of said nylon and into a depleted carpet mixture having a lower content of said nylon than the carpet material b) exposing the enriched carpet mixture to conditions at which depolymerisation of said nylon is effected.
Process for recovering monomeric units of a nylon from carpet material, said carpet material comprising fibres containing said nylon bound to a backing containing one or more non-nylon components, the carpet material containing between 15 and 35 wt. % of said nylon, which process comprises the steps of:
Process for recovering a carpet mixture from carpet material, said carpet material comprising fibres containing said nylon bound to a backing containing one or more non-nylon components, the carpet material containing between 15 and 35 wt. % of said nylon, which process comprises the step of:
Process for obtaining a carpet mixture comprising fibres and backing particles from whole carpet and/or strips of whole carpet, said whole carpet comprising said fibres bound to a backing, which process involves feeding the whole carpet and/or strips of whole carpet to a shredder, said shredder being provided with knives which are sufficiently blunt to effect size reduction of the backing and loosening at least part of the fibres from the backing.
Dependencies are inferred from the claim text.