Novel cleaning method

B - Operations – Transporting – 08 – B

Patent

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Details

B08B 3/10 (2006.01) B08B 7/02 (2006.01) D06L 1/00 (2006.01)

Patent

CA 2648344

The invention provides a method and formulation for cleaning a soiled substrate, the method comprising the treatment of the moistened substrate with a formulation comprising a multiplicity of polymeric particles, wherein the formulation is free of organic solvents. Preferably, the substrate is wetted so as to achieve a substrate to water ratio of between 1:0.1 to 1:5 w/w. Optionally, the formulation additionally comprises at least one cleaning material and, in this embodiment, it is preferred that the polymeric particles are coated with the at least one cleaning material. Preferably, the cleaning material comprises a surfactant, which most preferably has detergent properties. Most preferably, the substrate comprises a textile fibre. Typically, the polymeric particles comprise particles of nylon, most preferably in the form of nylon chips. The results obtained are very much in line with those observed when carrying out conventional dry cleaning processes and the method provides the significant advantage that the use of solvents, with all the attendant drawbacks in terms of cost and environmental considerations, can be avoided.

L'invention concerne un procédé et une préparation de nettoyage d'un substrat sali, le procédé comprenant le traitement du substrat humidifié avec une préparation comprenant de multiples particules polymères, sans solvants organiques. De préférence, le substrat est mouillé de manière à obtenir un rapport substrat/eau compris entre 1:0,1 et 1:5 en poids. Éventuellement, la préparation comprend également au moins un matériau de nettoyage et, dans ce mode de réalisation, les particules polymères doivent de préférence être enrobées avec ledit ou lesdits matériaux de nettoyage. De préférence, le matériau de nettoyage comprend un tensioactif, qui possède de préférence des propriétés détergentes. Idéalement, le substrat comprend une fibre textile. Généralement, les particules polymères comprennent des particules de nylon, idéalement sous la forme de copeaux. Les résultats obtenus sont tout à fait comparables à ceux observés avec des procédés de nettoyage à sec classiques, et le procédé offre l'avantage significatif d'éviter l'emploi de solvants, avec tous les inconvénients que cela implique en termes de coût et d'atteinte à l'environnement.

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