Abstract: Method for producing a foam element, wherein an expandable starting material of the foam material is supplied to a portable extruder (10) in the form of granules (11), is activated or fused therein under pressure and the effect of heat and is expanded to a foam element during the manually controlled discharge from the extruder.

Abstract: The present invention relates to expandable compositions in the form of granular materials that are based on epoxy resins with a content of binders and curing agents for curing the epoxy resin. Corresponding compositions can be readily introduced into hollow bodies, for example, into sticks or roof supports and expanded to a foam by heating the composition and cured. This results in hollow bodies filled with foam that are distinguished by significantly improved mechanical properties compared to comparable hollow bodies without a foam filling. At the same time, the granular materials according to the invention can be very readily processed without a complex and expensive two-component injection-molding process being necessary.

Abstract: The present invention relates to a sealing device (1) which comprises a barrier layer (2) with a thermoplastic polymer P1, and an adhesive layer (3) with at least one ethylene-vinyl acetate copolymer (EVA) P2 and azo-dicarbonamide A, and which is suitable for sealing bases in the building sector. The invention further relates to a method for sealing said bases. The method according to the invention allows structures of civil engineering to be sealed rapidly and efficiently and ensures good adhesion of the sealing device on the base.

Abstract: The present invention relates to a sealing device (1) comprising a barrier layer (2) and an adhesive layer (3), and which is suitable for sealing bases in the building sector. The adhesive layer comprises a polymer P2, the polymer P2 being polyethylene (PE), polypropylene (PP) or a copolymer of ethylene and propylene, and a polyolefin-based polymer P3, the polymer P3 having at least one functional group which is selected from the group consisting of carboxylic acids, OH-groups, anhydrides, acetates and glycidyl methacrylate, and azo-dicarbonamide A. The invention further relates to a method for sealing the said bases. The method according to the invention allows structures of civil engineering to be sealed rapidly and efficiently and ensures good adhesion of the sealing device on the base.

Abstract: A process is described for producing a hollow body or cavity filled with insulating foam. The process can include feeding an expandable starting material of the insulating substance to a plastics extrusion apparatus, activating the material therein under pressure and, upon discharge therefrom into the hollow body or the cavity, expanding the material with such a high volume expansion gradient that the insulating substance formed by the expansion completely fills the cross section of the hollow body or cavity without delay upon entry. Also described, is a plastics extrusion apparatus.

Abstract: A continuous filament non-woven web is disclosed, wherein filaments of the web include an expandable thermoplastic material. Mattings fabricated from the continuous filament non-woven web are also disclosed. The web or matting can be used in sealing applications as it can be cut into desired dimensions and inserted into a cavity. The web or matting allows for introduction and drainage of further fluids in and from the cavity. The extendable thermoplastic material can be activated and foamed to fill a part of or the entire cavity. The sealing can prevent air, water or noise from intruding into the cavity and a space behind that cavity.

Abstract: An expandable insert assembly, method of making the same, and a vehicle structure are disclosed. A structure may include a wall defining at least a portion of a cavity, with the wall including an installation surface for the insert. The insert may include a substrate configured to be secured to the installation surface, with the substrate having a stiffness allowing the substrate to deflect relative to an initial shape. The insert further includes a plurality of discrete expandable elements secured to the substrate adjacent the installation surface. Each of the discrete expandable elements are formed of an expandable material and are secured to the substrate such that they do not affect the stiffness of the substrate prior to expansion of the expandable elements.

Abstract: This disclosure describes a method of making a polyurethane foam and a method of reducing NVH expected to be experienced by a substrate using the foam. When the foam is subjected to 95% relative humidity for a period of 7 days at a temperature of about 50° C., the foam absorbs an amount of water that is less than about 30% of the weight of the foam.

Abstract: Compositions for damping the vibration of mechanical components, such as those used in vehicles, are disclosed and described. The compositions comprise a water-based polymer resin and a drying control agent. The drying control agent minimizes the occurrence of cracks and swelling in the damping coating films when the coating films are baked and dried.

Abstract: A structural reinforcing material and method of making the same is disclosed and described. The material is prepared by coating glass reinforcing fibers with a molten epoxy-based composition. The glass fiber reinforced material can then be formed into a preform suitable for injection molding into an expandable sealing baffle.

Abstract: This disclosure describes a method of making a polyurethane foam and a method of reducing NVH expected to be experienced by a substrate using the foam. When the foam is subjected to 95% relative humidity for a period of 7 days at a temperature of about 50° C., the foam absorbs an amount of water that is less than about 30% of the weight of the foam.

Abstract: A polyurethane foam is disclosed and described. The polyurethane foam is formed by combining a first component comprising at least one polyol with a second component comprising at least one polyisocyanate. The ratio of the number of isocyanate equivalents in the second component to the number of hydroxyl equivalents in the second component is less than 1.0. The foam exhibits low levels of free diisocyanate monomer, thereby reducing the amount of hazardous, volatile organic compounds. As a result, the foam can be prepared and installed without the need for ventilation equipment, external sources of fresh air, and the like.

Abstract: An expandable insert assembly, method of making the same, and a vehicle structure are disclosed. A structure may include a wall defining at least a portion of a cavity, with the wall including an installation surface for the insert. The insert may include a substrate configured to be secured to the installation surface, with the substrate having a stiffness allowing the substrate to deflect relative to an initial shape. The insert further includes a plurality of discrete expandable elements secured to the substrate adjacent the installation surface. Each of the discrete expandable elements are formed of an expandable material and are secured to the substrate such that they do not affect the stiffness of the substrate prior to expansion of the expandable elements.

Abstract: A structural reinforcing material and method of making the same is disclosed and described. The material is prepared by coating glass reinforcing fibers with a molten epoxy-based composition. The glass fiber reinforced material can then be formed into a preform suitable for injection molding into an expandable sealing baffle.

Abstract: A polyurethane foam is disclosed and described. The polyurethane foam is formed by combining a first component comprising at least one polyol with a second component comprising at least one polyisocyanate. The ratio of the number of isocyanate equivalents in the second component to the number of hydroxyl equivalents in the second component is less than 1.0. The foam exhibits low levels of free diisocyanate monomer, thereby reducing the amount of hazardous, volatile organic compounds. As a result, the foam can be prepared and installed without the need for ventilation equipment, external sources of fresh air, and the like.

Abstract: A thermally expansible material includes at least one activated thermoplastic polymer, an amine-functionalized curing agent, and a blowing agent. The at least one activated thermoplastic polymer includes an anhydride functionalized thermoplastic polymer. The expansible material is substantially free of a tackifier, and the material is adhereable to a substrate during expansion. A baffling material following expansion is also provided.

Abstract: Compositions for damping the vibration of mechanical components, such as those used in vehicles, are disclosed and described. The compositions comprise resin blends that are semi-compatible and which are blended to form a micro-phase separation.

Abstract: Compositions for damping the vibration of mechanical components, such as those used in vehicles, are disclosed and described. The compositions comprise a water-based polymer resin and a drying control agent. The drying control agent minimizes the occurrence of cracks and swelling in the damping coating films when the coating films are baked and dried.

Abstract: A system includes a first layer of a first polymeric material being visco-elastic when solidified. The first polymeric material covers a first portion of a substrate. A second layer of a second polymeric material (being stiff when solidified) covers at least a portion of the first layer and at least a second portion of the substrate. Additionally, a method includes applying a layer of first polymeric material to a first portion of a substrate. The first polymeric material is visco-elastic when solidified. Additionally, a layer of a second polymeric material (being stiff when solidified) is applied to the first polymeric material and a second portion of the substrate. The first polymeric material is constrained between the second polymeric material and the substrate. Both of the first polymeric material and the second polymeric material are dispensed in fluid form from a bulk source of fluid material.

Abstract: A thermally expansible material includes an epoxy resin; a plurality of thermoplastic polymers, wherein at least one thermoplastic polymer includes at least one chemical moiety capable of reacting with said epoxy resin; and a heat-activated blowing agent. The thermally expansible material is substantially free of a tackifier, and the material is adhereable to a substrate during expansion. A baffling material following expansion is also provided.