Method of making recyclable tufted carpets
AssigneeHoechst Celanese Corporation
InventorsJames A. Corbin, Robert D. Johnson, William G. Neely, Ian S. Slack, Barrie L. Davies
Life of this patent
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Abstract
A recyclable thermoplastic tufted fabric made of a partially meltable primary backing and tufts tufted into the primary backing. The tufts are bonded to the backing by partially melting the backing to bond the tufts and applying a secondary backing. Such a carpet can be recycled through processes known to recycle polyester.
Claims4
A process for producing a tufted carpet, said process comprising providing a fibrous primary backing layer comprising thermoplastic binder fiber, inserting into said fibrous primary backing layer a plurality of fibrous tufts, said fibrous tufts extending through a face of said fibrous primary backing layer to form a plurality of anchoring loops projecting from an opposing face of said fibrous primary backing layer,
- thereafter, needling a nonwoven, fibrous, secondary backing layer comprising thermoplastic binder fibers to said opposing face of said fibrous primary backing layer, wherein said primary and said secondary backing layers are of the same thermoplastic material, and thereafter, heatsetting to secure said anchoring loops of said fibrous tufts.
A process for producing a tufted carpet said process comprising providing a fibrous primary backing layer comprising thermoplastic binder fibers, inserting into said fibrous primary backing layer of plurality of fibrous tufts, said fibrous tufts extending through a face of said fibrous primary backing layer to form a plurality of anchoring loops projecting from an opposing face of said fibrous primary backing layer, thereafter, needling a nonwoven, fibrous, secondary backing layer comprising thermoplastic binder fibers to said opposing face of said fibrous primary backing layer, and thereafter, heatsetting the foregoing structure to secure said anchoring loops of said fibrous tufts,
- wherein said primary and secondary backing layers are of the same thermoplastic material,
- wherein said thermoplastic material is selected from the group consisting of polyester, polyamide, polypropylene.
Dependencies are inferred from the claim text.