Abstract: The present invention relates to a woven or nonwoven web comprising: fibers comprising one or more polymers selected from the group consisting of polyarylene sulfides, polyolefins, polyamide imides, polysulfones, polyethersulfones, polyetherketones, polyether etherketones or copolymers thereof; and one or more inorganic salts selected from the group consisting of barium sulfate, strontium sulfate, calcium sulfate, lead(II) sulfate or mixtures thereof; wherein the one or more inorganic salts are present on the surface of at least part of the fibers. The woven or nonwoven web is particularly suitable for use in alkaline water electrolysis.

Abstract: A method of making a coating applied to an article is provided. The method includes preparing at least one substrate on the article to be coated, to obtain at least one prepared substrate. The method further includes preparing the coating, obtained by disposing a plurality of high density metal pellets in an adhesive material, to form a metal adhesive matrix, and adding a polymer material over the metal adhesive matrix. The plurality of high density metal pellets is in an amount of at least 90% (ninety percent) by weight of the total weight percent of the coating. The method further includes applying the coating to the prepared substrate, to obtain a mass-enhanced, coated article. The coating thickness and the amount of high density metal pellets are sufficient to provide an attenuation of vibration of the coated article and a reduced risk of unwanted ergonomic effects.

Abstract: The present invention relates to a multifunctional structure having a load-bearing flexible porous support and a plurality of functionalizing fillers which are embedded in a resin matrix applied on the support such that at least a part of the resin penetrates into the fibrous support, however maintaining a portion of the thickness of the fibrous support not impregnated with the resin. The invention also relates to a method for manufacturing a structure according to the invention.

Abstract: Disclosed is a building board construction that provides enhanced acoustical properties. In one possible embodiment, the board is a gypsum board with opposing facing sheets and an intermediate set gypsum core. An opened celled polymeric sheet is formed within the gypsum core and gives the resulting board enhanced sound absorption. In an alternative embodiment, individual pieces of polymeric foam are used in stead of the polymeric sheet. Also disclosed are various manufacturing methods whereby boards with enhanced acoustical properties can be formed in an continuous process. The various components of the present disclosure, and the manner in which they interrelate, are described in greater detail hereinafter.

Abstract: A first aspect of the present application relates to a method for producing sound-damping, sound-absorbing and/or insulating molded material. More specifically, the method according to the invention relates to a method for producing said molded materials, wherein the fibrous material is wound around at least two carriers and subsequently the wound blank thus obtained remains on the carriers so as to be permanently solidified in order to obtain the molded material according to the invention. A further aspect of the present application concerns the molded material thus obtained, in particular in the form of molded mats or molded objects. Said molded material can be used, in particular, in mufflers. Finally, the following application concerns a device for producing said molded materials from fibrous material.

Abstract: A vibration-damping sheet to be bonded to a metal adherend includes a resin layer and a constraining layer laminated on the resin layer. The resin layer contains a pressure-sensitive adhesive resin, a metal which has a higher ionization tendency than that of the metal adherend, and an electrically-conductive carbon.

Abstract: The invention relates to a sound-proofing component, particularly for absorbing noise in motor vehicles, comprising a first layer which is made of a nonwoven material, is embodied in a planar manner similar to a mat, and is provided with two opposite surfaces. A thin spray coating made of a duroplast, such as polyurethane and/or thermoplastic materials, is disposed on one of the outer surfaces of the nonwoven fabric. Also disclosed is a method for producing said component.

Abstract: The invention relates to a convertible top cloth, including an outer top cloth, an inner roof lining, an insulating layer which is arranged between the outer top cloth and the inner roof lining, and at least one absorbent film which is accommodated between the outer top cloth and the inner roof lining, is a plastic film produced at least from polyester and is provided on the insulating layer adjacent to the inner roof lining.

Abstract: A thermal and/or acoustic insulation product, and an apparatus and the process for manufacturing the product. The product is based on mineral wool of the glass wool or rock wool type. The product has at least part of its external surface uncovered. The product is surface-treated over at least a portion of the external surface with a composition having softening properties and including at least one surfactant.

Abstract: A sound absorbing material having a homogenous mixture of an organic man-made fiber, an inorganic man-made fiber, a co-binder, and a cellulose material wherein the organic man-made fiber is polyester, the inorganic man-made fiber is fiberglass, and the co-binder is a thermo-setting resin. The cellulose material may include Kaolin clay and/or boric acid.

Abstract: A substrate, its process of manufacture, and its applications. The substrate includes a fibrous material which is provided, over at least a portion of its surface and/or within its thickness, with a coating with photocatalytic properties including a semi-conducting material with photocatalytic properties of the oxide or sulphide type.

Abstract: A polymer adapted for the Shrink resist treatment of textile materials imparting water, stain and/or oil repellency. The polymer includes a fluorinated polyether.

Abstract: An object of the present invention is, by utilizing carbon fibers as its constituent material, to provide a thermal-acoustic insulation material having excellent properties in durability, compression resilience, lightness, fireproofness, and non-galvanic corrosiveness. The material of the present invention comprises a wool-like carbon fiber aggregate composed of carbon fibers having an average fiber diameter of 0.5 ?m to 5 ?m and an average fiber length of 1 mm to 15 mm and the contact points of the fibers are bonded together by a thermosetting resin. The galvanic current of the material is 10 ?A or lower in a galvanic cell comprising an electrode composed of the thermal-acoustic insulation material, the other electrode composed of an aluminum plate, and an electrolytic solution composed of 0.45 wt. % sodium chloride aqueous solution.

Abstract: A thermal and acoustical insulation product is fabricated from rotary glass fibers, thermoplastic fibers and a small quantity of textile fibers, all preferably scrap fibers, and at least one binder. The thermal and acoustical insulation product is optimal for applications, such as, duct liners, high density industrial insulation boards, and OEM insulation applications. The small amount of textile fibers enhance the mechanical strength of the insulation product.

Abstract: A non-fiberglass containing sound absorbing moldable laminate of a fibrous batt and stiffening mats formed from chopped mono-filament polyester bonded by a thermoplastic binder is provided. The mono-filament mats stiffen the batt and allow use of all thermoplastic material in the composite.

Abstract: A sound absorbing article, which may be formed to a thickness of between 1 and 2 mm and have an NRC value between 0.8 and 0.85, is provided. Additionally the sound absorbing article may be formed of materials, which are flame retardant and environmentally friendly. The sound absorbing article includes (i) a material which is pervious to air, and which is characterized by proximal and distal surfaces with respect to a sound source, an internal structure, and a specific weight; (ii) a coating which adheres to the surfaces and internal structure, thus increasing the specific weight by a predetermined factor; and preferably (iii) a membrane, attached to the material at selected bonding points, forming interconnected channels between the material and the membrane, and allowing air to pass through them.

Abstract: Sound attenuating laminates for use within vehicles are provided that include a substrate and polyurethane attached to selected portions of the substrate. The polyurethane is non-porous and serves as a barrier to attenuate sound passing through the substrate. Additional non-porous polyurethane may be added to one or more selected portions of the polyurethane layer to enhance sound attenuation characteristics in the one or more selected portions. Sound attenuating laminates for use within vehicles are provided that include a substrate and breathable polyurethane attached to selected portions of the substrate. The polyurethane serves as an absorber of sound (e.g., sound generated within a vehicle compartment). Additional breathable polyurethane may be added to one or more selected portions of the polyurethane layer to enhance sound absorption characteristics in the one or more selected portions.

Abstract: The object of the invention is a process for the production of a reinforced acoustically resistive layer, in which there is produced a layer of structural reinforcement (2) from fibers pre-impregnated with a thermosetting or thermoplastic resin, said layer having a given quantity of open surface relative to the acoustic waves to be handled, there is associated with said reinforcing layer (2) a metallic acoustic cloth (5) whose mesh is suitable for the quantity of open surface of said structural layer, and the polymerization or consolidation of said resins under pressure and temperature suitable for the resins used, is carried out, characterized in that there is associated with the impregnation resin for the fibers a component (2a) adapted for macromolecular interpenetration with said resin during the polymerization or consolidation so as to ensure for the reinforcing layer (2) improved mechanical and adhesive properties for the metallic cloth (5).

Abstract: A method for making a unitary composite headliner adapted to be installed in a motor vehicle includes providing an inner layer and two reinforcing layers, each of which comprises polymeric material, the inner layer being configured to absorb sound and vibrations, and the reinforcing layers being configured to provide sufficient flexibility to the headliner to facilitate installation in the vehicle, while also providing sufficient rigidity to the headliner to enable the headliner to be self-supporting once installed in the vehicle; differentially heating the layers such that each reinforcing layer is heated to a respective predetermined reinforcing layer temperature, and the inner layer is heated to a predetermined inner layer temperature less than either respective reinforcing layer temperature; inserting the layers into a mold such that the inner layer is disposed between the reinforcing layers; and compressing the layers together to bond the layers and form the headliner.

Abstract: A convertible fabric having improved acoustical and heat transfer properties comprising an elastomeric polymer coating on a double woven fabric. The double woven having the standard sateen weave and the backing fabric of a plain weave interconnected to the sateen weave fabric with one surface of the plain weave coated with an elastomeric polymer to provide air spaces between the fabrics of the double woven fabric.

Abstract: A non-fiberglass containing sound absorbing moldable laminate of a fibrous batt and stiffening mats formed from chopped mono-filament polyester bonded by a thermoplastic binder is provided. The mono-filament mats stiffen the batt and allow use of all thermoplastic material in the composite.

Abstract: The use of a formaldehyde-free aqueous binder comprisingA) a polymer obtained by free-radical polymerization comprising 5-100% by weight of an ethylenically unsaturated acid anhydride or of an ethylenically unsaturated dicarboxylic acid whose carboxyl groups may form an anhydride group, andB) an alkanolamine having at least two hydroxyl groupsas a coating composition for shaped articles.

Abstract: A sound insulating membrane and processes for forming, particularly well suited for use in floor, ceiling and wall constructions. The membrane comprises at least one backing layer in contact with a layer of nonfoam polymeric material. The polymeric material has an elongation factor of about 500% to about 900% and a Shore A hardness of from about 65 to about 80 points, 5 seconds. In a preferred embodiment, the polymeric material comprises 40-70% chlorinated polyethylene, 20-30% ethylene vinyl acetate, and up to 10% polyvinyl chloride. Floor, ceiling and wall constructions and related methods utilizing the sound insulating membranes are also disclosed.