Process for applying a polyurethane dispersion based foam to an article
First Claim
1. A process for making a two or more component foam composite obtained by adhesion of a polyurethane foam onto a substrate comprising the steps of frothing an aqueous polyurethane formulation;
- applying the froth to a substrate and drying the froth into a foam wherein the foam has a dry density of 35 kg/m3 to 160 kg/m3 (2.2-10 lbs/cft) wherein the polyurethane formulation is prepared from a polyurethane dispersion, a frothing surfactant and a stabilizing surfactant.
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Abstract
Disclosed is a process for making a two or more component foam composite obtained by adhesion of a polyurethane foam onto a substrate comprising the steps of frothing an aqueous polyurethane formulation; applying the froth to a substrate and drying the froth into a foam wherein the foam has a dry density of 35 kg/m3 to 160 kg/m3 (2.2-10 lbs/cft). The process allows the production of foam backed textiles without the need for a flame lamination step or the need for an adhesive layer between the textile and the foam layer and is optionally optimized for superior handling properties for covering polyurethane molded foam cushions.
48 Citations
26 Claims
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1. A process for making a two or more component foam composite obtained by adhesion of a polyurethane foam onto a substrate comprising the steps of frothing an aqueous polyurethane formulation;
- applying the froth to a substrate and drying the froth into a foam wherein the foam has a dry density of 35 kg/m3 to 160 kg/m3 (2.2-10 lbs/cft) wherein the polyurethane formulation is prepared from a polyurethane dispersion, a frothing surfactant and a stabilizing surfactant.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
- 23. A textile fabric-flexible polyurethane composite comprised of a woven fabric, the fabric having been coated on at least one side with a flexible foam having a dry density of 35 kg/m3 to 160 k/m3 where the foam is derived from a frothed polyurethane composition comprising a polyurethane dispersion, surfactants and other additives known per se for producing such flexible polyurethane foams.
Specification