Method for producing multicolored carpet
View Patent ↗A method of producing a multicolored textured carpet comprises blending a polyamide polymer and a color pigment to form a melt blend, extrusion spinning the melt blend to form pigmented polyamide yarns, tufting (1) the pigmented polyamide yarns and (2) white dyeable polyamide yarns into a carpet, and overdyeing the carpet with an amount of acid dye sufficient to produce the multicolored textured carpet. The color pigment and the acid dye are selected to provide desired multicolored effect in the carpet. The multicolored textured carpet having deeper color and dye light fastness is also disclosed.
1. A method for preparing a multicolored carpet comprising the successive steps of:
(a) melt blending an acid dyeable polyamide polymer and a color pigment and extrusion spinning the melt blend to form pigmented acid dyeable polyamide yarns,
(b) tufting (1) the pigmented acid dyeable polyamide yarns of step (a) with (2) white acid dyeable polyamide yarns and (3) white cationically dyeable polyamide yarns into a carpet, and
(c) overdyeing the carpet prepared in step (b) with an a mixture of acid dyes and cationic dyes to produce the multicolored carpet,
wherein the color pigment and the dyes are selected to provide multicolored effects in the carpet.
2. The method of claim 1 , wherein the color pigment selected from the group consisting of Pigment Red 60, Pigment Red 63, Pigment Red 80, Pigment Red 66, Pigment Red 67, Pigment Red 81, Pigment Red 68, Pigment Red 73, Pigment Red 83, Pigment Yellow 65, Pigment Yellow 82, Pigment Yellow 85, Pigment Yellow 87, Pigment Blue 61, Pigment Blue 69, Pigment Blue 74, and Pigment Blue 78.
3. The method of claim 1 , wherein the blend of the acid dyeable polyamide polymer and the color pigment includes a black pigment.
4. The method of claim 1 , wherein the dye in step (c) is a premetalized acid dye.
5. The method of claim 1 , wherein step (c) is performed at a pH in the range of from about 1.5 to about 7 and at a temperature in the range of from about 70° C. to about 100° C.
6. The method of claim 1 , wherein the acid dyeable polyamide polymer is selected from the group consisting of nylon 6, nylon 6, 6, nylon 4, 6, nylon 6, 12, and blends and copolymers thereof.
7. The method of claim 1 , wherein overdyeing in step (c) is piece dyeing.