Recycled polyvinyl butyral compositions and uses

B - Operations – Transporting – 32 – B

Patent

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Details

B32B 27/06 (2006.01) B29B 17/00 (2006.01) B32B 27/12 (2006.01) B32B 27/20 (2006.01) B32B 27/22 (2006.01) B32B 27/30 (2006.01) C08G 63/48 (2006.01) C08G 63/91 (2006.01) D06N 7/00 (2006.01)

Patent

CA 2516641

By utilizing recovered polyvinyl butyral (30) in the production of carpet backcoatings (34), the amount of waste polyvinyl butyral that is landfilled or otherwise disposed of is significantly reduced, as is the need for manufacturing polyvinyl butyral. The recovered polyvinyl butyral (30) is size reduced (32) and then utilized by itself or with other ingredients (33, 36) to provide a composite used in the manufacture of a useful product (35, 37) (like carpet backing), and then the composite material is used to make the useful product (35, 37) (such as carpet backing (34), which is used as a primary or secondary backcoating (34) in the manufacture of new carpeting (35) or as a precoat, main back coat or combination precoat/main back coat (34) in the manufacture of new carpet tile (35) In addition, waste carpet (20) may optionally be used with the recovered polyvinyl butyral as a filler material (24); thus, further reducing the amount of waste that is landfilled or incinerated.

Grâce à l'utilisation du polyvinyl butyral récupéré (30) dans la production de couches de fond de tapis (34), la quantité de polyvinyl butyral qui va au rebut, qui est enfouie ou éliminée d'une autres manière, est sensiblement réduite, et il en va de même de la fabrication de polyvinyl butyral. Le polyvinyl butyral récupéré (30) a une taille réduite (32) et est utilisé ensuite en tant que tel ou avec d'autres ingrédients (33, 36) de manière à fournir un composite utilisé dans la fabrication d'un produit utile (35, 37) (comme la couche de fond d'un tapis (34)), qui est utilisé en tant que couche de fond de tapis primaire ou secondaire (34) dans la fabrication d'un nouveau tapis (35) ou en tant que couche préliminaire, couche de fond principale ou une combinaison préliminaire / couche de fond principale (34) dans la fabrication d'un nouveau carré de tapis (35). En outre, le tapis non utilisé (20) peut éventuellement s'utiliser avec le polyvinyl butyral récupéré en tant que matériau cible (24); de cette manière, on réduit la quantité de déchets qui est enfouie ou incinérée.

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