(57) In a process for laminating textiles, wherein a textile web (1) is coated with adhesive
in a spraying station (3) and joined with a layer of wadding (8) or with another textile
web when passing through a pair of rollers (9), the adhesive used is a moist curing
solvent-free polyurethane prepolymer of the mono-component type which is sprayed
on the textile web under essentially anhydrous conditions, and then the laminate is
allowed to cure in usual atmosphere having normal moisture.
Preferably, the adhesive maximum contains 1.5% free isocyanate, and it preferably
has a viscosity of about 9000 mPa.s at 130 °C, a density of 1.1 and a softening point
(ring/ball) of 45 °C. Such an adhesive is sprayed at about 190 °C, measured at the
nozzle tips.
The result is a product having excellent properties with respect to washing fastness
and softness, just as the drawbacks usually involved in spray lamination are avoided
in the production.
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