Process and apparatus for recycling disposable diapers

B - Operations – Transporting – 29 – B

Patent

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Details

B29B 17/02 (2006.01) A41B 13/00 (2006.01) B02C 23/08 (2006.01) B02C 23/18 (2006.01) B03B 5/00 (2006.01) B03B 5/10 (2006.01) B03B 7/00 (2006.01) B03B 9/00 (2006.01) B09B 3/00 (2006.01) B29B 17/00 (2006.01) C08J 11/00 (2006.01) D01B 9/00 (2006.01) D01G 5/00 (2006.01) D01G 11/00 (2006.01) D06L 1/22 (2006.01) D21B 1/02 (2006.01) D21C 5/02 (2006.01)

Patent

CA 2185122

A process for recovering the cellulose flock component of used disposable sanitary non-woven cellulose articles (D), especially diapers (D) having also a plastics component and a superabsorbent polymer component, comprising: separating the cellulose flock component from the plastics component; disintegrating the cellulose flock component in water (14) into cellulose fibers and separating (18) them from the water (14) containing the super-absorbent polymer component and other waste, by selectively collecting the cellulose fibers onto a rough surface (18); disposing the water, effluent and separately compacting (19) the separated cellulose fibers and the separated plastics component prior to their discharge. The invention also provides an apparatus for carrying out the process.

L'invention se rapporte à un procédé de récupération d'un composant de flocs de cellulose se trouvant dans des articles hygiéniques usagés, jetables, en cellulose non-tissée (D), notamment des couches jetables pour bébé (D) possédant également un composant en matière plastique et un composant polymère superabsorbant. Ce procédé consiste à: séparer le composant de flocs de cellulose du composant en matière plastique; désintégrer dans l'eau (14) le composant de flocs de cellulose de manière à obtenir des fibres de cellulose et les séparer (18) de l'eau (14) contenant le composant de polymère superabsorbant et d'autres déchets, par récupération sélective des fibres de cellulose sur une surface pourvue d'aspérités (18); jeter l'eau, l'effluent, et compacter séparément (19) les fibres de cellulose et le composant en matière plastique séparés avant de les jeter. L'invention se rapporte également à un appareil permettant de mettre ce procédé en oeuvre.

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