Method of treating carpet for enhanced liquid repellency
View Patent ↗To improve the liquid barrier properties of a carpet, a repellency compound, such as a fluorochemical, is applied to the backstitch side or underside of the primary backing layer of a carpet.
1. A method of producing carpet, comprising of the steps of:
(a) providing a carpet having a pile side formed from yarn fibers projecting through a primary backing layer, and an underside region comprising back stitch yarn fibers and the primary backing layer;
(b) applying effective repellency enhancing amounts of a first repellency enhancing compound to the pile side;
(c) applying a liquid repellency enhancing compound to the underside region to provide improved liquid barrier properties in the region; and
(d) applying separately and subsequently a coating or latex layer to the underside region,
wherein step (b) is performed separately from step (c).
2. The method as claimed in claim 1 , wherein step (c) is performed before step (d).
3. The method as claimed in claim 1 , further comprising the step of:
(e) applying a secondary backing to said underside region by use of a latex.
4. The method as claimed in claim 1 , further comprising the step of:
(e) dying the carpet.