Method for manufacturing a carpet having a secondary backing substantially impervious to liquids and the resultant carpet
AssigneeE. I. Du Pont de Nemours and Company
InventorsWilliam W. Heim, James K. Hendrix, Joyce M. Materniak, Peter M. Murphy, Neil A. Panzier, Yashavant V. Vinod
Life of this patent
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Abstract
This invention relates to methods for making a carpet having a secondary backing which is substantially impervious to liquids. The methods involve applying a repellent finish onto the secondary backing material and drying the finish. The finish may be applied as foam to the secondary backing, against the force of gravity, by means of a press roll. This invention also includes the resultant carpets prepared from these methods.
Claims24
A method for constructing a carpet having a secondary backing which is substantially impervious to liquids, comprising the steps of:
- a) applying a repellent finish comprising a composition selected from the group consisting of silicones, wax emulsions, and hydrophobic acrylate resins, and mixtures thereof onto the secondary backing of a carpet having a tufted primary backing adhered to the secondary backing, and
- b) drying the repellent finish onto the secondary backing to render the secondary backing substantially impervious to liquids.
A method for constructing a carpet having a secondary backing which is substantially impervious to liquids, comprising the steps of:
- a) applying a repellent finish comprising a composition selected from the group consisting of silicones, wax emulsions, and hydrophobic acrylate resins, and mixtures thereof onto a secondary backing material;
- and
- b) contacting the secondary backing with an adhesive-coated tufted primary backing to form a carpet having a secondary backing which is substantially impervious to liquids.
A method for applying a repellent finish comprising a composition selected from the group consisting of silicones, wax emulsions, and hydrophobic acrylate resins, and mixtures thereof onto a secondary backing of a carpet, comprising the steps of:
- a) feeding a carpet comprising a secondary backing and a tufted primary backing on a moving carpet line located above the rotating press roll and a foam delivery tube, wherein the carpet faces upwards such that the secondary backing is positioned on the carpet line and the foam delivery tube is not in contact with the secondary backing;
- b) introducing the repellent finish in the form of foam through the foam delivery tube to form a bank of foam between the rotating press roll and moving carpet;
- and
- c) contacting the secondary backing with the foam repellent finish.
A carpet having a secondary backing substantially impervious to liquids, comprising a tufted primary backing adhered to a secondary backing coated with a sufficient amount of dried repellent finish comprising a composition selected from the group consisting of silicones, wax emulsions, and hydrophobic acrylate resins, and mixtures thereof to render the secondary backing substantially impervious to liquids.
Dependencies are inferred from the claim text.