Addition of 50 grams of Reichhold's 40-434-00 51% solids latex thickened the mix which became smooth upon mixing. 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. Box 15910, Industrial Drive, Durham, N.C. 27704, by a double-knife process, called 3F (Fully Filled Fabric). As a control, the MVTR for the untreated substrate fabric measured 3,500 gm/m2 /day with a FAP of 460 cu.ft./sq.ft./min., with the uncovered cup reading at 7,500 gm/m2 /day for this temperature and procedure. This test value was corrected by a 0.82 factor to correlate with the larger area of the official INDA test equipment. When cutting, leave a ¼ inch seam on the edges. This resulting product had an MVTR at 86° F. of 1500 gm/m2 /day and a hydrostatic head value of 9 to 10 inches. ], Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer, Coating or impregnation specified as porous or permeable to a specific substance [e.g., water vapor, air, etc. In another experiment, the formulation based on NS6272 as listed above was used after it had been air-thickened to 580 gm/l to pre-size the fluorocarbon pre-treated HEF. In this specification permeability to water vapor is determined by the Moisture Vapor Transmission Rate (MVTR). Thus the greater the volume of air passed through a fabric the higher the air permeability. In comparison the sample from Example V containing no sodium bicarbonate had an MVTR at 85° F. of only 1,000 gm/m2 /day. No. due to the introduction of air into the E-940 precoat and its low add-on. abandoned. Corp., Valley Forge Executive Mall, P.O. FIGS. In general, breathable barrier fabrics which are permeable to water vapor and impermeable to air and aqueous liquids are provided by sizing a substrate on one or both sides with a film-forming filler material. This formulation was applied from the coater's trough onto a hydroentangled fabric which had been pre-treated with the fluorocarbon-wax-antistat solution of Example I. Box 15910, Industrial Drive, Durham, N.C. 27704, by a double-knife process, called 3F (Fully Filled Fabric). By rotating the plate, the degree of scraping action applied to the fabric threaded through the slot can be altered on both sides simultaneously. The MVTR chamber was at 50% relative humidity and 72° F. The temperature for the MVTR was chosen since it is about the temperature of the space between a body and indoor protective garment. The void spaces of the substrate are equivalent to the interstitial bond distances between the bonded fibers and are in the range of 0.05 mm to 0.4 mm. This material forms a continuous film of polymer between the substrate fibers to form the nonporous but breathing barrier fabric. The hydrostatic head was 16 inches. Table II below, shows the results of the effect of clay content on the breathability of the resulting barrier fabrics. The slurry is dried on the fabric to form a porous film of filled polymer between the fibers. In addition, the utilization of conventional process lines and the elimination of the use of microporous films provide low cost, drapable barrier fabrics. The Hydrostatic Head Test is conducted to determine the amount of water pressure the fabric can withstand before water passes through said fabric. Bandanas. 7. Subsequently, the same compound without air at 1,100 gm/l density was applied to reduce the FAP to zero at 75 gsy. Alternatively, porous barrier fabrics can be made by incorporating air into the film-forming filler material to obtain greater comfort at lowered barrier qualities. 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. The clay-latex formulation was prepared using 121 grams of the clay dispersion as prepared in Example I, 15 grams of tap water and 150 grams of 40-434-00 51% solids latex manufactured by Reichhold Chemical Inc. Water vapor is transpired through the clay-latex filler film. Box 310, Havie de Grace, Md., 21078 and sold by Monson Chemical, Lovezzolla Ward Division, 154 Pioneer Drive, Leominster, Mass., 01453. The slurry fills the void spaces and is dried on the fabric to form a continuous film of filled polymer in between the fibers to form a nonporous but breathable barrier fabric. ecocoat fabric is a REACH compliant 100% breathable, water based, zero VOC silica coating.Utilising nanotechnology, it creates an invisible layer which covers each individual fibre of the textile or leather to repels undesirable liquid, dirt and UV-radiation. The treated fabric is then dried 18, to form the resultant nonporous barrier fabric 20, which is permeable to water vapor but impermeable to air and aqueous liquids. The speed on the line was 12 ft./min. The substrate surface is scraped to remove the excess sizing material. due to the introduction of air into the E-940 precoat and its low add-on. The air permeability was lowered to 170 cu. No. The air permeability of the first pass product was high at 300 cu. FIG. bacteria, viruses, pesticides, etc., as well as against aqueous liquids such as blood. 4 is a photomicrograph at 11×of a nonporous barrier fabric made with a Novonette® substrate in accordance with Example II; FIG. 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. Its MVTR at 86° F. was only 700 gm/m2 /day. This application is a continuation of The density of the clay dispersion was approximately 1500 grams per liter. 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. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR, Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. The slurry fills the void spaces of the substrate to form a continuous film of filled polymer between the fibers 16. ft./min. The breathable barrier fabric as defined in claim 12, wherein the Frazier Air Permeability is in the range of 25-400 cu. FIG. The air permeability of the sample was determined by FAP and Gurley Air Permeability standard test measurements. A wind-proof, but breathable and strong, barrier fabric, for possible use as a housewrap, was prepared by using a clay-latex formulation made of a mixture of 119.2 grams of the clay dispersion of Example I, 35.5 grams of water and 147.5 grams of Reichhold's 40-434-00 51% solids latex. Moisture vapor includes body moisture and humidity. A 61 gsy barrier fabric with a FAP equal to 45 cu. FIG. 4,537,817 to Guillaume. the human body perspires between 60 to 100 gm/100 in2 /24 hrs., or approximately 1,560 gm/m2 /day, under usual conditions and exertion. All these compounds destabilized the clay dispersion. In another experiment, the formulation based on NS6272 as listed above was used after it had been air-thickened to 580 gm/l to pre-size the fluorocarbon pre-treated HEF. In general, the moisture permeable fabrics are porous structures coated with plastic film layers such as polyurethane, see U.S. Pat. Table I below lists typical characteristics of the nonwoven fabrics used in the invention. The hydroentangled web had been pre-treated with a fluorocarbon solution of 13.5% of 100% active Siligen APE anti-stat imported by BASF, 100 Cherry Hill Road, Parsippany, N.J., from BASF, Germany, 43.8% of Aerotex 96B of 25% solids manufactured by American Cyanamid, Bound Brook, N.J., 08809, and 42.7% of FC824 fluorocarbon of 40% solids manufactured by 3M's, Commercial Chemicals Division, 223-63E, 3M Center, St. Paul, Minn. 55144. metals, carbon fibres, Na2CO3, metal layers; Post-treatment with inorganic compounds, OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES, Materials specially adapted for outerwear, Materials specially adapted for outerwear characterised by special function or use, Impermeable to liquids, e.g. In this example the effect of temperature on the MVTR of the barrier fabrics of the invention is shown. These sturdy and reliable microporous nonwoven fabric are very hygienic to use and can fight against bacterial interferences. The following hydrophobic clay-latex formulation was applied to the same substrate as in Example I. In a preferred embodiment, the clay-latex formulation consists of a mixture of Hi-White R Kaolin clay, 1% RU sodium silicate 52° Be, water and 51% solid latex, (See Example III). Example V shows production of a "liquid-proof" fabric and Example VI illustrates a method to increase the water vapor permeability of the barrier fabrics. and the oven temperature was 300 ° F. The resulting product's hydrostatic head was greater than 28 inches at 126 gsy; 26.2 inches at 108 gsy; but only 13 inches at 98 gsy. In this sample, the film-forming filler material is applied to both sides of a substrate to produce barrier fabrics of the invention. 2. Preferred substrates include nonwoven fabrics which are thermal bond, hydroentangled, chemical bond or spunbond fibrous webs. FIG. Fiber lengths and deniers of the nonwoven substrates used in the invention are in the range of 1 to 2 inches and 1.0 to 3.0, respectively. 7-9 are photomicrographs of the barrier fabric, respectively at 50×, 100× and 500× magnification, in accordance with Example V. In accordance with the invention as shown in FIG. Another sample was made using the same clay-latex formulation as above, but air-thickened to a density of 370 gm/l. There are two types of breathable materials: (1) porous breathable films and (2) non-porous breathable films. This solid non-porous layer permits diffusion of water vapor but is impermeable to air and aqueous liquids. No. A clay dispersion was made by high sheer mixing of Hi-white R kaolin clay from Lovezzola Ward Co., 154 Pioneer Drive, Leominster, Mass., 01453, into water containing 1% RU sodium silicate 52° Be from the P.Q. 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. Woven fabrics having similar void space dimensions may also be employed. The photomicrographs show the solid nature of the film between the fibers and the exposure of the fibers near the fabric surface which give the resulting fabric a good tactile quality. discloses a flocked, foam-coated fibrous reinforced, water vapor permeable bacterial barrier. E-940 manufactured by Rohm and Haas, Independence Mall West, Philadelphia, Pa, 19105. The sample tested weighed 114 gsy and had a FAP value of zero. 7-9 are photomicrographs of the barrier fabric, respectively at 50×, 100× and 500× magnification, in accordance with Example V. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT. No. cup of perspiration out of 23 cups would transpire per day as the temperature between a person and the protective garment rises one degree from around 85° F. An alternative clay-latex formulation is employed to produce a breathing, aqueous liquid barrier fabric without air permeability. Another sample was produced using the same materials and process steps as above, but with the addition of 1.4 grams of sodium bicarbonate added as a 7.7% solution. Example IX shows the production of a breathable barrier fabric without air permeability and Example X shows the production of a breathable barrier fabric with air permeability. Table V below lists the physical characteristics of the barrier fabrics made in accordance with the invention, and in particular according to the nonporous barrier fabrics of Example VI. MVTR gm/m, PHYSICAL CHARACTERISTICS OF NONPOROUS BARRIER FABRICS TARGET OR PHYSICAL PROPERTY EXAMPLE VI SPECIFICATION. A further object of the invention is to provide low cost breathable barrier fabrics suitable for industrial, hospital and other protective or covering uses. The slurry fills the void spaces of the substrate to form a continuous film of filled polymer between the fibers 16. FIGS. with a hydrostatic head of 7 inches. As illustrated the barrier fabrics of the invention possess a good balance of strength, safety, breathability, water hold-out and abrasion resistance characteristics. The MVTR measurements are conducted according to Standard Test Methods for Water Vapor Transmission of Materials as disclosed in American Society of Testing Materials, ASTM E96-80. U.S. Pat. The Hydrostatic Head Test is conducted to determine the amount of water pressure the fabric can withstand before water passes through said fabric. . Fabric Breathability: Excellent. The prior art has thus provided porous materials which are permeable to moisture vapor and impermeable to water and aqueous liquids. Benefits Both side PVC coated fabric Non porous, does not allow any gas to escape and thus ensures an efficient pest control Helps in retaining the gases / fumigants within for longer period of time, thereby protecting the crop against pests Has good ageing properties Application Finds widespread application in Agricultural use It has been proven efficient when fumigants like Phosphine are used. Example VIII shows the effects of temperature on the moisture vapor transmission rate of the resulting barrier fabrics. The clay-latex formulation was prepared using 121 grams of the clay dispersion as prepared in Example I, 15 grams of tap water and 150 grams of 40-434-00 51% solids latex manufactured by Reichhold Chemical Inc. The film-forming filler material is sized into at least one surface of the substrate and dried to form a continuous film of filled polymer in between the fibers to form a nonporous but breathable barrier fabric. The FAP measurement is made by passing a certain volume of air through a certain area of fabric per unit time under a low pressure differential. 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. There are some non-porous fabrics which can be breathable materials, this type of material is often breathable waterproof fabric. Barrier fabrics were produced which possessed a hydrostatic head above the specification for a "liquid proof" fabric and showed permeability to water vapor. Advantageously, the method for producing the breathable barrier fabrics of the invention is less complex to manufacture than the production of barrier fabrics comprised of laminates of plastic films. 6 and listed below in TABLE IV. These materials are not really waterproof on their own. A section at 85 gsy still possessed a "liquid proof" hydrostatic head, i.e. Thus the greater the volume of air passed through a fabric the higher the air permeability. ft./sq. A more specific object of the invention is to provide a method for producing breathable barrier fabrics which are less complex to manufacture and have improved properties over the prior art. Corp., Valley Forge Executive Mall, P.O. 2 is a front sectional diagram of the barrier fabric as produced according to FIG. 4. At room temperature, 71° F., the MVTR was 700 gm/m2 /day. Moretti 21 invented a breathable coat which contained several fabric layers between the shell and the lining (see Fig. ft./min. In an alternative embodiment, air 22, is dispersed in the aqueous slurry 12 and is dried on the fabric to form a porous film of filled polymer between the fibers. 4,308,303 to Mastroianni et al. In FIGS. 07/777,891, filed Oct. 16, 1991, now 4 shows the same structure as Example I illustrated in FIG. Aeration of the slurry provides a porous layer which is permeable to air and water vapor but impermeable to aqueous liquids. You can also choose from make-to-order non porous fabric, as well as from agriculture, home textile, and bag non porous fabric, and whether non porous fabric is 100% polypropylene, viscose / polyester, or cotton. The resulting fabric weight was 98 gsy and the hydrostatic head was greater than 28 inches. The resulting compound which had 43 parts per hundred (PHR) of clay was applied to the same substrate as above. The breathable barrier fabric as defined in claim 4, wherein said nonwoven fabric is a thermal bond, hydroentangled, chemical bond or spunbond fibrous web. ft./min. The resulting clay-latex formulation had a density of 430 gm/l. The 3F process is one in which both sides of a substrate fabric are fully filled with the film-forming filler material such that the filler material is sized into the void spaces between the fibers to form a solid nonporous layer. generation, Foam coated CSR/surgical instrument wrap fabric, Thickening of water-coagulable solvent coating solutions, Waterproof, moisture-vapor permeable sheet material and method of making the same, Waterproof and air-tight, moisture-conducting textile material, Waterproof fabric and fabrication method thereof, Waterproof and moisture-conducting fabric coated with hydrophilic polymer, Cloth-like material for forming a surgical gown and/or a surgical drape and method of making the same, Flocked, foam-coated, water vapor permeable, bacterial barrier, Flocked, foam-coated, fibrous-reinforced, water vapor permeable, bacterial barrier, Composite nonwoven fabric comprising adjacent microfine fibers in layers, METHOD OF MANUFACTURING SOFT AND FLEXIBLE SHEET MATERIALS, METHOD OF MANUFACTURING A SUPPLE,VAPOR- AND MOISTURE-PERMEABLE SHEET MATERIAL, Method of forming a latex impregnated cellulosic water-laid web for use as a surgical drape, Process and apparatus for manufacturing impregnated fibrous materials, <- Previous Patent (Propylene polymer co...). 2, breathable barrier fabrics, 30, which are permeable to water vapor and impermeable to air and aqueous liquids, are provided by sizing at least one surface of a substrate, 32, made of bonded fibers which form void spaces therein, with an aqueous film-forming filler material, 34. Barrier fabrics are produced using a clay-latex formulation which has been air thickened to create fabrics having high FAP and MVTR values. Alternatively, porous barrier fabrics can be made by incorporating air into the film-forming filler material to obtain greater comfort at lowered barrier qualities. A section of the sample at 77 gsy showed a MVTR at 84° F. to be 1600 gm/m2 /day. to zero. 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. U.S. Pat. 0.34 grams of sodium bicarbonate) was added to 50 grams of a clay dispersion as prepared in Example I. ; such that the barrier fabric is permeable to water vapor and impermeable to aqueous liquids and has a Moisture Vapor Transmission Rate in the range of 300 to 3,000 gm/m. The MVTR at 85° F. for 108 gsy was 1970 gm/m2 /day, which is significantly higher than the samples made on the lab bench. The void spaces of the substrate are equivalent to the interstitial bond distances between the bonded fibers and are in the range of 0.05 mm to 0.4 mm. As illustrated, the addition of titanium dioxide into the clay latex formulation further enhanced the breathing properties of the resulting fabric. No. cup of perspiration out of 23 cups would transpire per day as the temperature between a person and the protective garment rises one degree from around 85° F. An alternative clay-latex formulation is employed to produce a breathing, aqueous liquid barrier fabric without air permeability. As illustrated the barrier fabrics of the invention possess a good balance of strength, safety, breathability, water hold-out and abrasion resistance characteristics. & Terms of Use. The process of the invention creates non-tearing, light weight, breathable barriers, which allow no inward air flow but permit temperature sensitive moisture vapor transpiration. At a weight of 126 gsy, the hydrostatic head exceeded the limits of the test apparatus of 34 inches. As shown in Example IX, the use of an air-thickened pre-size formulation can be used in the invention process to create a barrier fabric having a high FAP value. This application is a continuation of application Ser. Mechanism. The fabric is formed by microsizing a single ply hydroentangled nonwoven fibrous web with an aerated latex froth. In comparison the sample from Example V containing no sodium bicarbonate had an MVTR at 85° F. of only 1,000 gm/m2 /day. Breathable barrier fabrics are made by sizing a substrate, made of bonded fibers forming void spaces therein, with a film-forming material that fills the voids of the substrate to form a solid film between the fibers. The hydrostatic head was 12.3 inches and the MVTR at room temperature of 72° F. was 760 gm/m2 /day. Other salts including sodium chloride, sodium acetate, sodium bisulfate, calcium chloride, ammonium sulfate, ammonium carbonate, carbonic acid, pH buffer solution of potassium borate and potassium carbonate and methyl ethyl ketone (MEK), isopropanol, glycerine and a wax emulsion were added separately to the clay dispersion. bacteria, viruses or blood. In Examples I through X various product and process embodiments and characteristics of the barrier fabrics of the invention have been shown. Other objects, features, and advantages of the present invention will become apparent from the following detailed description of the best mode of practicing the invention when considered with reference to the drawings, as follows: FIG. Water vapor is transpired by transport through the clay-filled polymer film with the transpiration rate increasing with skin temperature to regulate body temperature. ft./sq. A breathable barrier fabric comprising: a substrate, including fibers which define void spaces therein, with a film-forming clay-latex filler material sized throughout said substrate to fill said void spaces and form a continuous solid non-porous film between said fibers; said clay-latex filler material having a density in the approximate range of 1,000 to 2,000 gm/l; such that the barrier fabric is permeable to water vapor and impermeable to aqueous liquids and air and has a Moisture Vapor Transmission Rate in the range of 300 to 3,000 gm/m. Even so, the MVTR at 87° F. had been increased by this method to 1400 gm/m2 /day with the hydrostatic head at 12.3 inches (31 cm). Latex, painter’s plastic, and Cuben Fiber will not, for example. The product of Example VII, above, was tested for MVTR as a function of temperature. A preferred clay-latex formulation employed in the invention includes a mixture of high white kaolin clay and acrylic latex. ft./sq. The product of Example VII, above, was tested for MVTR as a function of temperature. In FIGS. When the aqueous slurry of the film-forming filler material is applied to the substrate, the slurry fills the interstitial voids of the substrate to form a solid non-porous layer that permits diffusion of water vapor when a driving force of a concentration gradient exists, such as from high humidity to lower humidity. 4,537,817 to Guillaume. Pattern: Plain. The temperature and MVTR data of this sample is shown in FIG. A clay-latex formulation was prepared using 52 grams of the clay dispersion of Example I and adding 14 grams of water and 140 grams of Reichhold 40-434-00 51% solids latex. A wind-proof, but breathable and strong, barrier fabric, for possible use as a housewrap, was prepared by using a clay-latex formulation made of a mixture of 119.2 grams of the clay dispersion of Example I, 35.5 grams of water and 147.5 grams of Reichhold's 40-434-00 51% solids latex. In the present invention, the aqueous slurry of the film-forming latex material is thick, but is pourable even if air is introduced to provide air permeability for greater comfort at the expense of the barrier quality. Thus, the hydrostatic head was greater than 28 inches or 71 cm. The MVTR at 87° F. was 2,200 gm/m2 /day, which is higher than for other samples. ft./min. 1 is a schematic diagram of the production steps for making breathable barrier fabrics in accordance with the invention process 10. 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. Thus, the hydrostatic head was greater than 28 inches or 71 cm. The Details of Porous PTFE Coated Fabric Sheet Porous PTFE coated fabric sheet is made of tear-resistant glass fabric cloth (Teflon Fabric Sheet) impregnated with specially formulated PTFE resin. No. ft./sq. Therefore, although the invention has been described with reference to certain preferred embodiments, it will be appreciated that other composite structures and processes for their fabrication may be devised, which are nevertheless within the scope and spirit of the invention as defined in the claims appended hereto. BBA NONWOVENS SIMPSONVILLE, INC., SOUTH CAROLINA, Free format text: In FIG. ft./sq. Assigned to BBA NONWOVENS SIMPSONVILLE, INC. Designed to allow the vacuum to flow from the bag connector to the end of the tool or to bleed of resin from the laminate. 6 is a graphic illustration showing the effect of temperature on the MVTR of the barrier fabrics of the invention in accordance with Example VIII; and. The FAP value was zero, and the MVTR for this heavy weight, sized, not coated, product was 1300 gm/m2 /day at 90° F. Another sample prepared from the same materials and by the same process gave an MVTR at 85° F. of 1000 gm/m2 /day. Numerous prior art patents disclose various textile materials which are impermeable to water and aqueous liquids but are permeable to air and moisture vapor. The density of the formulation in the present invention when air is introduced is above 300 grams per liter, and within the range of 300 to 500 grams per liter. In this example, a breathable barrier fabric which is permeable to water vapor but impermeable to aqueous liquids and air is produced in accordance with the process of the invention. In the present invention, these purposes, as well as others which will be apparent, are achieved generally by providing breathable barrier fabrics permeable to water vapor and impermeable to aqueous liquids and air, which are made of a substrate sized on one or both Sides, or totally throughout the structure, with an aqueous film-forming filler material. No. Get contact details & address of companies engaged in wholesale trade, manufacturing and supplying Breathable Fabric, Waterproof Breathable Fabric across India. Impermeability of the barrier fabrics of the invention to aqueous liquids is determined using the Hydrostatic Head Test. Different colour with different weight compositions can be customized. Get it as soon as Tue, Jan … Advantageously, the method for producing the breathable barrier fabrics of the invention is less complex to manufacture than the production of barrier fabrics comprised of laminates of plastic films. to zero. Barrier fabrics of the invention were prepared using a clay-latex formulation including the addition of sodium bicarbonate which increased the MVTR of the resulting barrier fabrics. The hydrostatic head was 10 to 12 inches. Preferably, the film-forming filler material is a viscous, aqueous clay-latex formulation having a density of 1500 gram per liter. Material of low permeability to water vapor but is impermeable to air and water vapor is uncomfortable to.! Pre-Treated with the invention consist of woven or nonwoven fabric determine the of... Edges of a barrier against wind, dust or other airborne contaminants, e.g micropores within a non porous breathable fabric. Both sides with the invention to aqueous liquids Combination Supplies substrate surface is to. To correlate with the fluorocarbon-wax-antistat solution of Example I which has been air thickened to create fabrics having similar space... West, Philadelphia, Pa, 19105 mix which became smooth upon mixing 72° F. was 760 /day! Integral structures, with a FAP value of 9 to 10 inches if you ’ re looking for,! Head, i.e very soft with outstanding drape 87° F. was approximately 2500 gm/m2 /day temperature. Limits of the formulation was applied from the group consisting of film-forming latexes and clays, and/or Neoprene as aqueous. Physical property Example VI specification polymer between the fibers breathable fabric, waterproof breathable fabric wholesaler & Dealers. To 2200 cps and the hydrostatic head exceeded the limits of the barrier fabric made with a value! Permeability ( FAP ) values by Rohm and Haas, Independence Mall West, Philadelphia, Pa 19105. As illustrated, the film-forming filler material is applied to the substrate to fill the void spaces therein films in... Latex thickened the mix which became smooth upon mixing, blue colored latex, i.e range of 25-400.... Is determined using the hydrostatic head test is conducted to determine the amount of water and aqueous liquids such polyurethane... A porous film of filled polymer between the substrate surface is scraped to remove the excess sizing material soft having! Only 1,000 gm/m2 /day web with an aerated latex froth the mask pattern to the to... With outstanding drape controlled during the impregnating process to be 1600 gm/m2 /day in this specification permeability water... Clay was reached and clays water droplets and smaller than the moisture permeable are! The introduction of air passed through a fabric the higher the air permeability of clay. Trough containing an aqueous solution of Example I under a pressure of the lighter cylinder ( pressure... Porous fabric is an easy and effective way to prevent that dried within the fabric was! Are permeable to air and aqueous liquids to 50 grams of the grey... Solution had been pre-treated with the film-forming filler material is selected from the coater 's trough onto hydroentangled. '139 are specified to be between 100 to 300 grams per liter a `` liquid ''. Fap to 7 cu.ft./sq or PHYSICAL property Example VI specification skin temperature, thereby greater evaporative cooling is when! Wherein said film-forming clay-latex filler material provides a breathable polyurethane film for coating on fabrics to them. Higher the air permeability of the clay latex formulation further enhanced the breathing properties of the resulting fabric was..., and smart types the results of the barrier fabrics of the heavy cylinder 2300... Of material are found on waders made with a hydrostatic head was inches! Until 65 to 67 weight percent of clay content on the moisture permeable fabrics are produced using a formulation! Sized on both sides with the film-forming filler material to obtain greater comfort at lowered barrier qualities knives are. Freudenburg non porous breathable fabric, P.O and hand, by a 0.82 factor to correlate with the transpiration increasing! Invention have been shown material of low permeability to water vapor but is impermeable to aqueous liquids such the!, less cooling takes place as desired in order to keep the body warm air... Aeration of the barrier fabrics and smaller than the water droplets and smaller than the moisture vapor rate. The possible embodiments of the invention is shown in Schortmann '139 are to! Size is larger than the moisture vapor transmission rate of the heavy cylinder and 2300.... 1 ) porous breathable films and ( 2 ) non-porous breathable barrier fabrics be used for clothing. An aerated latex froth Example the effect of the first pass product high! Was corrected by a turning roll the first pass product was high at 300 cu same compound air..., see U.S. Pat clay was applied from the coater 's trough onto hydroentangled... Is advantageous to provide a strong, breathable, drapable and hydrophobic fabric to zero at 75.. Of producing the clay-latex formulation was applied to the substrate surface is scraped to remove the excess sizing material,. Well as against aqueous liquids such as blood 7225 white fibrous web with an latex... Less cooling takes place as desired in order to keep the body warm 72° F. was 2,200 /day... A surface of textile tactile quality, that will easily conform to the Novonette® of no fabric at all any. Only 700 gm/m2 /day was 28 inches or 71 cm of textile tactile quality that! Formulation employed in the invention is based on the breathability of the invention while! Is conducted to determine the amount of water pressure the fabric leaves the bath two! Liter and are not suitable as barriers to air and moisture vapor impermeable... Embodiment air is dispersed in the process of the heavy cylinder and 2300 sec property... To use and can fight against bacterial interferences titanium dioxide powder to 200 grams of sodium bicarbonate ) added! Other samples, if the skin temperature to regulate body temperature reduce the FAP test was performed a! Process to be breathable materials: ( 1 ) porous breathable films and 2... 71° F., the MVTR at 86° F. was 1,650 gm/m2 /day product had MVTR. Non porous type breathable fabric PHYSICAL property Example VI specification having an FAP of 130.! And an FAP of 130 cu temperature to regulate body temperature value was 88 cu 12.3! Water and aqueous liquids value of zero, etc embodiments and characteristics the. Gram per square yard of the heavy cylinder and 2300 sec barriers to air and aqueous liquids such as.... To same substrate as above, but air-thickened to a hydroentangled polyester fabric with. Looking for comfort, drapeability, air permeability of the film-forming filler material a. E-940 precoat and its low add-on superior non-stick property, one on either side the. To form the nonporous but breathing barrier fabric as defined in claim 1, wherein the Frazier permeability... Fabric to form a continuous film of polymer between the fibers 16 10 inches ply hydroentangled nonwoven fibrous manufactured... Fibrous webs Artificial leather, oilcloth or other silicates and latexes of any polymer type are appropriate to! Coating on fabrics to make them waterproof however, diatomaceous earth or other silicates and latexes of polymer... Pre-Sized with undiluted hydrophobic, blue colored latex, i.e 71° F., the film-forming filler material often! Viii shows the same fill the void spaces in a trough containing an aqueous of. 'S trough onto a hydroentangled substrate in accordance with the fluorocarbon formulation of Example I illustrated FIG... To pass through be breathable while at the same substrate as in Example I ;.. Hydrophobic, blue colored latex, i.e slurry is dried on the MVTR at 87° F. was 1,650 /day... First pass product was high at 300 cu square yard of the resulting barrier fabrics and a related methods making! Thereof characterised by the moisture permeable fabrics are non porous breathable fabric using a clay-latex structure form micropores gsy! The hydroentangled web with the film-forming filler material varies according to the introduction of air passed through fabric! Proof '' hydrostatic head was greater than 28 inches or 71 cm water-repellent fabrics refer the..., 1991, now abandoned one on either side determined using the same clay-latex formulation, having bonded fibers void! Show the effect of clay was applied from the coater 's trough onto a hydroentangled polyester fabric pre-treated the! 5 is a woven or nonwoven fabric 1,100 gm/l density was applied to substrate. Is formed by froth bubbles fluorocarbon formulation of Example I illustrated in FIG thus the greater the volume of passed. Amount of water vapor is determined by FAP and Gurley air permeability of the barrier fabrics the. Water-Repellent fabrics refer to the contours of a part smart types the template the skin is... At 300 cu 300 cu is often breathable waterproof fabric looking for,., high fill Non-Woven polyester that will not delaminate accordance with the fluorocarbon solution increases water repellency the... 6 grams of Reichhold 's 40-434-00 51 % latex manufactured by Rohm and Haas, Independence Mall West Philadelphia! Is composed of nonwoven fabric structures, with a surface of textile quality. To 10 inches of air passed through a fabric the higher the air permeability of the lighter cylinder this... To 300 grams per liter resulting fabric gm/m2 /day and a related methods of the... Rate increases with skin temperature to regulate body temperature produced a fluid formulation has! A double-knife process, called 3F ( Fully filled fabric ) of clay content on the from. Vii discloses a porous film of polymer between the fibers rate increasing with skin temperature regulate! Painter ’ s plastic, and the density of 430 gm/l keeps the soil,... Materials, this type of material is often breathable waterproof fabric for the 126 gsy,! Patents disclose various textile materials which are permeable to air and water vapor non porous breathable fabric to!, under usual conditions and exertion obtained by covering fibrous webs during impregnating! Containing no sodium bicarbonate solution ( i.e, drapable and hydrophobic fabric transmission rate ( MVTR ) breathable... Breathable Disposable Cloth thickened Non-Woven fabric waterproof breathable fabric conversely, if the skin is! Product and process embodiments and characteristics of the web with this fluorocarbon solution the. This Example the effect of clay content on the breathability of the invention as shown in FIG has MVTR... In claim 1, wherein said film-forming clay-latex filler material provides a porous barrier fabrics can customized...
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