A paper-like nanocomposite material based on mineral fibers, which can be used as a capillary-porous element of evaporative-type air-cooling units. The material is made using glass fibers with a diameter of 0.4 m as mineral fibers and sodium aluminate and aluminum sulfate as a binder. The material is made on traditional papermaking equipment using casting technique with a specified ratio of the above components.

Various high performance, high efficiency filter media are provided that are cost effective and easy to manufacture. In particular, various filter media are provided having at least one layer with a waved configuration that results in an increased surface area, thereby enhancing various properties of the filter media. The filter media can be used to form a variety of filter elements for use in various applications.

Viral filtration media, an article comprising the viral filtration media, and a method of filtering a virus-containing sample using the viral filtration media, wherein the viral filtration media comprises: a porous substrate comprising a surface having a polymer grafted thereto, wherein the grafted polymer comprises interpolymerized monomers comprising: a (meth)acrylic acid monomer: and, optionally, a poly (alkylene oxide) monomer.

The paper-like nanocomposite material can be used as capillary-porous elements of evaporative-type air-cooling units. As mineral fibers, glass fibers with a diameter of 0.4 m are used. These fibers are hydrophilic; they do not swell and have a large specific surface area. As a binder, sodium aluminate and aluminum sulfate are used at a predetermined ratio.

The material is made on traditional papermaking equipment using casting technique with a specified ratio of the above components.

The technical result is the obtainment of a paper-like material having high properties in height and time of water rise, moisture capacity and strength. The material is also characterized by thermic, chemical and biological stability, absence of toxicity and zero emission of substances harmful to the human body into the air, resistance of its properties to the effects of mold, fungi and microorganisms in the aquatic environment.

Various high performance, high efficiency filter media are provided that are cost effective and easy to manufacture. In particular, various filter media are provided having at least one layer with a waved configuration that results in an increased surface area, thereby enhancing various properties of the filter media. The filter media can be used to form a variety of filter elements for use in various applications.

Various high performance, high efficiency filter media are provided that are cost effective and easy to manufacture. In particular, various filter media are provided having at least one layer with a waved configuration that results in an increased surface area, thereby enhancing various properties of the filter media. The filter media can be used to form a variety of filter elements for use in various applications.

The present invention relates to a filter composed of a multi-ply filter medium which (i) has at least one textile stiffening layer (layer 4), preferably a non-woven layer, of synthetic, polymer fibers, glass fibers or mixtures of the same, (ii) at least one filtration layer (layer 3), which is attached to at least one side of the non-woven stiffening fabric, the filtration layer being made up of glass fibers, (iii) at least one further filtration layer (layer 2), which is applied on the filtration layer according to ii), the further filtration layer being made up of glass fibers, and at least one textile cover layer (layer 1), which is applied on the filtration layer according to (iii), the cover layer being made up of synthetic polymer fibers. A further subject matter are filter modules including a housing and at least one filter medium according to the invention, and also a method for producing the filter medium according to the invention and also the filter modules and the use thereof in filtration of air/gas and liquids, preferably for filtration of air flows in supply air and/or heat exchanger systems.