Reclaiming waste carpet materials

B - Operations – Transporting – 29 – B

Patent

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Details

B29B 17/02 (2006.01) B03B 9/06 (2006.01)

Patent

CA 2318311

A system and method for reclaiming backing material from waste carpet or other products includes a chopper (110) capable of handling large pieces of waste carpet, at least two grinding or granulation steps (114, 124) to reduce the size of the waste carpet pieces and to dislodge carpet fibers from the remaining material, and at least three separation steps (116, 126, 138) to remove the dislodged fibers; one of the separation steps involves vibratory screening. Backing material reclaimed in this manner has a relatively low contamination level, and is suitable for reuse as carpet backing with little need for the addition of virgin backing material. The system and method further provide for the extrusion of the reclaimed backing material for use as new carpet backing.

La présente invention concerne un système et un procédé de régénération des matériaux des sous-couches de moquettes usagées ou d'autres produits comprenant un hacheur apte à traiter des moquettes de grandes dimensions et de détacher les fibres de moquette du matériau résiduel, et au moins trois étapes de séparation pour enlever les fibres détachées; une des étapes de séparation inclut un criblage vibratoire. Le matériau des sous-couches ainsi régénéré présente un niveau de contamination relativement faible, et est apte à être réutilisé en tant que sous-couches de moquette sans qu'il soit nécessaire d'y ajouter du matériau de sous-couches vierge. Le système et le procédé permet aussi l'extrusion des matières de sous-couches régénérées en vue d'une utilisation en tant que sous-couches de moquette.

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