ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:INTERNATIONAL PAPER COMPANY;REEL/FRAME:009479/0755, Free format text: The test process can be based on the method standard gb/t 5453-1997 "Determination of Air Permeability of Textile Fabrics", which is applicable to a variety of textile fabrics, including Technical fabrics, non-woven fabrics and other breathable textile products. Barrier fabrics are produced using a clay-latex formulation which has been air thickened to create fabrics having high FAP and MVTR values. and density of 1,270 gm/liter, was stirred with a spatula and then applied via a hand-held sizing blade to a piece of hydroentangled 100% polyester web of closed, 100×94, weave. FIGS. However, diatomaceous earth or other silicates and latexes of any polymer type are appropriate materials to use in producing the clay-latex formulation. Additional water, 20 grams, was added to decrease the viscosity of the formulation which was then applied via a hand-held sizing blade to the substrate surface. The first application added only 11 gsy and in the second pass another 37 gsy were added bringing the total weight to 86 gsy, which was heavier than targeted. 18 gsy of the clay-latex formulation was applied to the substrate and reduced the FAP from 160 cu.ft./ft2 /min. E-940 manufactured by Rohm and Haas, Independence Mall West, Philadelphia, Pa, 19105. Color: Purple, White etc. to zero. Specifically, 107 grams of the clay dispersion from Example I were added to 43 grams of water and 150 grams of Reichhold's 40-434-00 51% solids latex. Additionally air can be introduced in the film-forming filler material to create barrier fabrics which are permeable to air and water vapor but impermeable to aqueous liquids. The MVTR at 87° F. was 2,200 gm/m2 /day, which is higher than for other samples. No. In this example, a sample was made on a pilot line knife coater apparatus, equipped with a tenter framed oven using the clay-latex formulation of Example IX, which was air-thickened to a density of 493 gm/l and 38 gsy hydroentangled fabric. The MVTR of this sample at 85° F. was 1,650 gm/m2 /day, and the hydrostatic head was 28 inches. Thus, the barrier fabric of Example I with a MVTR of 1500 gm/m2 /day provides effective breathable properties for use in a protective garment fabric. The resulting non-porous breathable material provides a high strength fabric which is permeable to water vapor, such as body moisture, but impermeable to air and aqueous liquids. As stated in Mastroianni et al. The fabric is held below the solution surface by a turning roll. The FAP test was performed at a pressure differential of 0.5 inches of water and was zero. Purple, White Etc. Conversely, if the skin temperature is low, less cooling takes place as desired in order to keep the body warm. 5 is a photomicrograph at 11×, of a barrier fabric of the invention, comprised of a 34 gsy Lutrasil® substrate, produced in accordance with the process of Example V. The solid nature of the fully filled fiber web is shown in the photomicrograph as well as the straightness and continuity of the spunbond fibers. The breathable barrier fabric as defined in claim 1, wherein sodium bicarbonate is added to said film-forming clay-latex filler material to increase water vapor permeability of the breathable fabric. This application is a continuation of application Ser. A section of the sample at 77 gsy showed a MVTR at 84° F. to be 1600 gm/m2 /day. At room temperature, 71° F., the MVTR was 700 gm/m2 /day. A nonporous breathable barrier fabric of the invention was formed using a substrate comprised of Novonette® 741, manufactured by International Paper Company, Purchase, N.Y., sized with the clay-latex formulation as disclosed in Example I. Advantageously, unlike the froths, the nonporous barrier fabric of the invention breathes by providing permeability to moisture transport through the clay-latex film between the fabric's fibers, but acts as a barrier to air and aqueous liquids. Thus, the hydrostatic head was greater than 28 inches or 71 cm. FIG. In another embodiment air is dispersed in the film-forming filler material and is sized into at least one surface of the substrate to form a porous film of filled polymer between the fibers. There are some non-porous fabrics which can be breathable materials, this type of material is often breathable waterproof fabric. Box 310, Havie de Grace, Md., 21078 and sold by Monson Chemical, Lovezzolla Ward Division, 154 Pioneer Drive, Leominster, Mass., 01453. As the fabric leaves the bath, two sharp knife edges contact the fabric surface, one on either side. The Gurley Densometer readings were obtained for the fabric under the heavy cylinder by passing 100 cc of air through the fabric under a pressure of 4.88 inches of water and for the fabric under the lighter cylinder by passing under a pressure of 1.22 inches of water. Aeration of the slurry provides a porous layer which is permeable to air and water vapor but impermeable to aqueous liquids. Low, less cooling takes place as desired in order to keep the body warm evaporative cooling is achieved most... Increasing with skin temperature, 71° F., the hydrostatic head exceeded the of... Air but remains impermeable to aqueous liquids front sectional diagram of the first pass product high., drapeability, air, 6 grams of Reichhold 's 40-434-00 51 solids. 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