US 5,707,469 AGranted

Method of producing dyed nylon walk-off mats having improved washfastness, and mats produced thereby

AssigneeRobert R. Hixson

InventorsRobert R. Hixson, David R. Kelly, Hobert C. Sweatman

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Abstract

A method of making a dyed nylon walk-off mat having improved washfastness includes dyeing nylon yarn, or a tufted nylon mat, in a fiber reactive dye solution having a pH in the range of about 0.5 to about 2.5. The yarn is then heated, such as by steam, at a temperature above 200.degree. F., after which the yarn is treated with an alkaline solution followed by a heat treatment. A backing, such as of rubber or vinyl, is applied to the mat at an elevated temperature. The application of the backing at elevated temperature, and the heat treatment subsequent to application of the alkaline solution, may be performed simultaneously.

Claims6

Dependent claims

A method of making a dyed nylon walk-off mat having improved washfastness comprising the steps of:

(a) providing a fiber reactive dye solution having a pH in the range of about 0.5 to about 2.5,
(b) applying the dye to nylon yarn to color the latter,
(c) heating the yarn to a temperature above 200.degree. F.,
(d) contacting the yarn with an alkaline solution,
(e) tufting the yarn into a walk-off mat either before of after performing steps (b)-(d),
(f) applying a heat-responsive, rubber-like backing to the mat, and
(g) subjecting the mat and backing to an elevated dry heat temperature, said temperature being high enough to cause the backing to adhere to the mat and also to cause fixation of the fiber reactive dye to the nylon yarn of the mat.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 08/613,281Filed 11 Mar 1996
Granted: 13 Jan 1998
Term ends: Not estimatedThe source records don’t support an estimate.

Classification14 codes

D06P 3/248
Polyamides; Polyurethanes: using reactive dyes
D06N 7/0068
Floor covering on textile basis comprising a fibrous top layer being coated at the back with at least one polymer layer, e.g. carpets, rugs,…:…
D06N 7/0071
Floor covering on textile basis comprising a fibrous top layer being coated at the back with at least one polymer layer, e.g. carpets, rugs,…:…
D06P 1/67366
Of alkaline or alkaline-earth metals with anions different from those provided for in D06P1/67341: phosphates or polyphosphates

Family

No related US applications are recorded in the indexed filing history.

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