Patent ID: 6416624
Filing Date: 2002-07-09
Classification: B05D,C09K,D06M,D21H

Abstract:
A method for the manufacture of a sheet material product, comprising contacting a fiber slurry with a wire screen to form a fiber web and removing water from the fiber web to form a sheet material; characterized in that the method further comprises:(1) forming a liquid mixture in a closed pressurized system, said liquid mixture containing an additive composition and a compressed fluid comprising: (a) an additive composition containing at least one additive material that modifies or enhances the properties or performance of the sheet material product; and (b) a compressed fluid which is present in an amount which renders said liquid mixture capable of being sprayed, which forms a liquid mixture with said additive composition, and which is a gas at standard conditions of 0Â° C. temperature and one atmosphere pressure (STP); (2) spraying said liquid mixture by passing the mixture under a pressure of at least about 500 psi through an orifice to form a spray; and (3) applying said spray containing said additive composition to said sheet material being conveyed during the manufacture of said sheet material product and producing a sheet material product which is not a release sheet or a waterproofed textile product.