Method of preparing carpet backing using recycled carpet scrap

Details Method of preparing carpet backing using recycled carpet scrap Method of preparing carpet backing using recycled carpet scrap

D - Textiles, Paper

06

N

D06N 7/00 (2006.01) A47G 27/00 (2006.01) D06N 3/00 (2006.01)

Patent

CA 2502894

Carpet backing is prepared from carpet scrap by first comminuting the carpet scrap into fragments and then melting and fusing the carpet scrap fragments together to render molten fragments. The resulting molten fragments containing synthetic resins are then formed into agglomerates. The pellets are then ground into a fine powder. A slurry may be prepared from the ground powder and a carrier. The ground powder may, alternatively, be mixed with a polyurethane reactive mixture, aqueous polymer containing emulsion or a thermoplastic composition such as bitumen, polypropylene or polyethylene. The resulting polymeric coating is coated onto a substrate. The coated substrate is then hardened.

L'invention concerne la préparation d'un dossier de moquette à partir de résidus de moquette consistant, dans un premier temps, à fragmenter lesdits résidus, puis à les fondre et à les fusionner ensemble, de manière à obtenir des fragments fondus. Ces fragments fondus obtenus comprenant des résines synthétiques sont formés en agglomérats. Les boulettes sont ensuite broyées en poudre fine. Une suspension peut être préparée à partir de la poudre broyée et d'un véhicule. La poudre broyée peut, de manière alternative, être mélangée à un mélange réactif de polyuréthanne, un polymère aqueux renfermant une émulsion ou une composition thermoplastique, telle que le bitume, le polypropylène ou le polyéthylène. Le revêtement polymère obtenu est revêtu sur un substrat qui est ensuite durci.

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