Carpet backing comprising natural compounds
AssigneeInterface European Manufacturing B.V.
InventorJohannes Lieuwe Wever
Life of this patent
Estimating the term…
Abstract
A carpet or carpet tile comprising a biobased backing is provided. The resultant carpet tile has advantages in terms of environmental issues and reduces the need for fossil fuels. The backing is made using a backing composition comprising a resin, an oil, optionally a thermoplastic elastomer, and a filler material.
Claims11
A carpet or carpet tile comprising a textile top cloth, a precoating layer and a backing layer, wherein the backing layer comprises a backing composition, wherein the backing composition comprises:
- a rosin or a derivative thereof;
- a non-fossil natural oil which is optionally refined, hydrogenated, or partially hydrogenated;
- optionally, a thermoplastic elastomer;
- and
- a filler,
- wherein the non-fossil natural oil is present in the backing composition in an amount from about 0.1 to about 4% (w/w),
- wherein the filler is present in the backing composition in an amount from about 60 to about 95% (w/w),
- wherein the thermoplastic elastomer is present in the backing composition in an amount from 0 to about 4% (w/w),
- wherein when the thermoplastic elastomer is present, the thermoplastic elastomer comprises a copolymer of ethylene and vinyl acetate (EVA), a block copolymer of polystyrene and polybutadiene (SBS) or a polyhydroxyalkanoate, and
- wherein the backing composition is devoid of a polyolefin polymer.
A carpet or carpet tile comprising a textile top cloth, a precoating layer, and a backing layer, wherein the backing layer comprises a backing composition, wherein the backing composition consists of a particulate filler present in the backing composition in an amount from about 60 to about 95% (w/w) and a bio-based binder, the bio-based binder comprising
- a rosin or a derivative thereof;
- an unmodified non-fossil natural oil;
- and
- optionally, a thermoplastic elastomer (TPE),
- wherein the unmodified non-fossil natural oil is present in the backing composition in an amount from about 0.1 to about 4% (w/w),
- wherein when the thermoplastic elastomer is present, the thermoplastic elastomer comprises a copolymer of ethylene and vinyl acetate (EVA), a block copolymer of polystyrene and polybutadiene (SBS), a polyhydroxyalkanoate, or a polyolefin, and
- wherein when the TPE comprises the polyolefin, the polyolefin is present in the backing composition in a concentration from about 0.1% to about 3% (w/w).
Dependencies are inferred from the claim text.