Aqueous formaldehyde textile finishing process
AssigneeSprings Mills, Inc.
InventorsJames E. Hendrix, George L. Payet
Life of this patent
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Abstract
A process of treating a textile fabric containing cellulosic fibers to impart crease resistance in which the fabric impregnated with an aqueous solution containing formaldehyde and a curing catalyst, vacuum is applied to the impregnated fabric to remove excess impregnation solution and provide a wet pickup of about 15 to 35 percent, and the fabric is then dried and cured.
Claims16
A process of treating a textile fabric containing cellulosic fibers to impart crease resistance, said process comprising
- impregnating said fabric with an aqueous solution containing formaldehyde and a curing catalyst,
- applying a vacuum to the impregnated fabric to remove excess impregnation solution and to provide a wet pickup of about 15 to 35 percent by weight, and
- drying and curing the thus treated fabric.
A process of treating a textile fabric containing cellulosic fibers to impart crease resistance, said process comprising
- impregnating and thoroughly saturating said fabric in an aqueous solution containing formaldehyde and a curing catalyst,
- applying a vacuum to the impregnated fabric to remove excess impregnation solution and provide about 1/2 to 3 percent by weight formaldehyde on the fabric, and
- drying and curing the thus treated fabric and fixing at least 90 percent of the applied formaldehyde on the fabric.
A process of treating a textile fabric containing cellulosic fibers to impart crease resistance, said process comprising
- impregnating and thoroughly saturating said fabric with an aqueous solution containing from about 1 to about 10 percent by weight formaldehyde, a latent acid catalyst, and a surfactant,
- applying vacuum to the impregnated fabric to remove surface excess impregnation solution and to provide a wet pickup of about 15 to 35 percent by weight, and
- drying and curing the thus treated fabric at a temperature of 250 to 450 degrees F. and chemically fixing on the fabric at least 90 percent of the applied formaldehyde.
A process of treating a textile fabric containing cellulosic fibers to impart crease resistance, said process comprising
- advancing said fabric through a pad and saturating the fabric with an aqueous solution of from about 1 to about 10 percent by weight formaldehyde and an acid catalyst,
- directing the impregnated fabric from the pad and across a vacuum slot and applying a vacuum to the fabric to remove the surface excess impregnation solution and to provide a wet pickup of about 15 to 35 percent by weight, and
- directing the fabric from the vacuum slot through a curing oven and heating the fabric to a temperature of 250 to 450 degrees F. to dry and cure the fabric.
Dependencies are inferred from the claim text.