Pile carpet having a water activatable adhesive
AssigneePolysar Limited
InventorsJohn C. Kwok, Ivan S. Lee
Life of this patent
Estimating the term…
Abstract
An adhesive composition comprising a mixture of water based polymer in latex form and a material generally referred to as a thickening agent is disclosed for removably adhering a product to a substrate, for example a carpet with an attached backing to a flooring substrate. The adhesive may be applied as a layer to the carpet backing, dried and subsequently activated with water to adhere the carpet to the floor. After drying, the adhesive layer may be reactivated with water to permit the carpet to be removed from the floor. The adhesive layer when dried on the surface of a latex foam backed carpet provides a non-tacky surface which additionally increases the abrasion resistance of the latex foam backing thereby reducing damage to the backing during normal storage and handling.
Claims6
A tufted carpet having tufts secured in a primary backing, and attached thereto a secondary backing comprising a foam rubber, said secondary backing being uniformly coated on its exposed surface with a dry non-tackey adhesive layer in an amount from about 3.4 to 102 grams by dry weight per square meter, said adhesive being water activatable and having a wet initial tack and adhesive strength less than the delamination strength of the secondary backing, and a dry adhesive strength greater than the delamination strength of the secondary backing, said adhesive layer comprising from about 50 to 99.5 parts by dry weight of a latex of a polymer having a film forming temperature below about 25.degree. C. selected from the group consisting of natural rubber, C.sub.4 -C.sub.6 conjugated diolefin containg polymers, acrylic polymers, mixtures thereof and mixtures of vinyl acetate polymers with C.sub.4 -C.sub.6 conjugated diolefin containing polymers, and from about 50 to 0.5 parts by dry weight of thickening agent selected from the group consisting of alkali soluble/swellable aqueous emulsion polymers, salts of polyacrylic acid, water soluble starch, water soluble cellulose derivatives, alkali sensitive latexes, and mixtures thereof.
Dependencies are inferred from the claim text.