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US 5,722,603 AGranted
Process for separation and recovery of waste carpet components
AssigneeAlliedSignal Inc. /DSM N.V.
InventorsMichael Robert Costello, Bernd Roman Keller
Life of this patent
Estimating the term…
Abstract
A process for separating and recovering waste carpet material components, especially face fiber material, includes removing adhesive material from the waste carpet material feedstock to obtain a mixture containing face fiber material which is passed with a liquid medium to a hydrocyclone, where the solids in the mixture are separated on the basis of specific gravity, and recovered. The recovered components can then be processed into desired products.
Claims19
A process for recovering a face fiber material from a waste carpet material, said process comprising:
- a. providing a feedstock including a waste carpet material comprised of a face fiber material, a backing and an adhesive material;
- b. removing a portion of the adhesive material from the feedstock to obtain a first mixture comprising a portion of the face fiber material;
- c. passing the first mixture and a liquid medium to a hydrocyclone, wherein the face fiber material is substantially separated, as a face fiber material stream, from other solids in the mixture having a specific gravity different from the face fiber material;
- and
- d. recovering the separated face fiber material stream.
2 more elements
Dependencies are inferred from the claim text.