Treatment of absorbent sanitary paper products

B - Operations – Transporting – 29 – B

Patent

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B29B 17/02 (2006.01) B02C 19/00 (2006.01) D21B 1/02 (2006.01) D21B 1/32 (2006.01) D21C 5/02 (2006.01)

Patent

CA 2095150

A process for the treatment of absorbent sanitary paper products to separate such products into components thereof in a form suitable for recycling or re-use is disclosed; absorbent sanitary paper products include disposable diapers, incontinence products, feminine hygiene products, bedpads and other related absorbent and adsorbent products. The process comprises the step of treating said products in at least one bath of an aqueous solution to remove particulate and/or soluble matter from the products. The bath is operated under conditions that are conductive to non-destructive separation of said products into components thereof. In preferred embodiments, the treated product thus obtained is treated with at least one aqueous washing solution and with at least one aqueous solution of at least one of bleaching agent and antimicrobial agent, and separate streams of plastic and cellulosic materials are recovered. The process results in the recovery of usable products from absorbent sanitary paper products.

Méthode de traitement du papier hygiénique absorbant permettant de séparer les produits qui en contiennent en morceaux susceptibles d'être recyclés ou réutilisés. Au nombre des produits à base de papier hygiénique absorbant figurent les couches jetables, les produits pour incontinents, les produits d'hygiène féminine, les alèses et d'autres produits absorbants et adsorbants connexes. Cette méthode comporte le traitement desdits produits dans au moins un bain de solution aqueuse pour éliminer les particules et les matières solubles. Le bain se déroule de telle façon que les produits peuvent être séparés en morceaux sans être détruits. Dans la configuration privilégiée, le produit ainsi obtenu est lavé dans au moins une solution aqueuse et traité dans au moins une solution aqueuse contenant au moins un agent de blanchiment et un antimicrobien, et des feuilles séparées de plastique et de cellulose sont récupérées. On peut de cette façon récupérer des éléments des produits contenant du papier hygiénique absorbant.

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