Abstract: Headprotector for athletes, including a body of form-molded polyurethane integral foam surrounding the head on all sides, extending to the beginning of the neck vertebrae on the back of the head, and having a bowl-shaped region covering the chin, the molded body having openings formed therein for the eyes, nose, mouth and ears, a parting slot extending from the mouth opening over the chin bowl, and two parallel longitudinal slots extending over the occipital region of the head and ending at the lower edge of the molded body forming a free strap therebetween, the free strap extending from the upper region of the molded body to the beginning of the neck vertebrae.

Abstract: In a method of producing blocks of a foamable reaction mixture having an adjustable surface and sharp edges wherein the reaction mixture is discharged from a mixing chamber onto a forwardly moving surface path in a continuous mass of varying height, the improvement therein includes applying forces to the discharging mass opposing formation of differences in the height thereof.

Abstract: Foam molding apparatus wherein individual molds filled with a flowable foam-material mixture are subjectible in a hardening operation to a heating and subsequent cooling interval, includes a rotatably driven table carrying a plurality of the molds for hot-foam molded articles, means for directly and individually heating and cooling the molds, a central rotating distributor head carried by the table, and individually closable connecting lines which, with the central rotating distributor head, connect the individual molds to corresponding heating, cooling and energy-medium supply sources, and method of operation thereof.

Abstract: In a method of continuously producing rectangular foam blocks wherein a foamable polyurethane-reaction mixture is deposited on a bottom web moved by a conveyor belt, the surface of the rising foam is covered by a cover web which is withdrawn from the foam surface by a deviating device disposed near a location at which the foaming of the mixture is terminated, and the cover web is further advanced by means of a deviating roller, a method of synchronizing the movements of the cover web and the bottom web includes driving the deviating roller, through a transmission coupled to the conveyor belt, at a peripheral speed that is synchronized with the conveyor speed of the conveyor belt, and passing the cover web between the deviating roller and a roller adjustable in elevation and in pressure contact with the deviating roller.

Abstract: Applicator device for flowable reaction masses includes a crossbeam for distributing reaction mass and lines for feeding the reaction mass to the crossbeam, the crossbeam being formed with an inner hollow chamber communicating with the feeding lines for receiving reaction mass therefrom and an outer hollow space external to the inner hollow chamber, an inner wall separating the outer hollow space and the inner hollow chamber from one another, the inner wall being formed at uppermost locations thereof with overflow openings for passage into the outer hollow space of reaction mass fed by the feeding lines into the inner hollow chamber, and an outer wall at least partly surrounding the outer hollow space and formed with discharge openings for discharge of reaction mass received in the outer hollow space from the inner hollow chamber.

Abstract: The present invention relates to a process for the production of thermoplastic substrate with fibrous surfaces. The fibers of these surfaces are formed by drawing away from a heated surface a molten polymer component backed by an unmelted polymer residue layer or substate. Simultaneous with the drawing, the nascent fibers are stabilized by cooling. For this purpose, cooling media are introduced in the fiber-forming zone. The thermoplastic polymer compounds should be applied in a thickness of at least 50 microns, and preferably 150 microns (when only 1 polymer forms the molten component), on a heated drawing surface of a drum or a conveyor belt apparatus.This invention relates to the production of fibrous surfaces on polymer substrates. Typically the substrates are in the form of webs. The use of webs makes the cooling process more efficient.

Abstract: A method and apparatus for forming solid bodies by removing material from solid workpieces. A workpiece is situated between oppositely rotating tools which remove material from the workpiece, these tools having hollow interiors facing each other and each conforming to the configuration of one half of the finished body. The hollow interiors of the tools have teeth for removing material from the workpiece, and while the tools are rotated oppositely the distance therebetween is due so that from the workpiece a body is gradually formed, this body finally becoming almost completely enclosed within the hollow interiors of the tools, whereupon the latter have the distance therebetween increased so that the body formed thereby can be removed. These tools are adapted to form from a workpiece bodies of full circular or ring-shaped configuration, and the hollow interiors of the tools are provided with raised teeth similar to file teeth, for removing material from a workpiece.

Abstract: In an apparatus for the continuous production of rectangular foam slabs wherein a foamable reaction mixture is foamed on a forwardly moving floor web and lateral confining webs, and in which a cover web is applied during the foaming process to the surface of the rising foam, the improvement which comprises means for supplying said cover web from a supply to the surface under controllable tension, thereby exercising a controllable pressure on the surface of the rising foam, removing the cover web from the foam surface beyond the point at which the rising mixture has substantially reached its maximum height and passing the web rearwardly and then forwardly to serve as the floor web for receiving further foamable mixture.

Abstract: Catalyst mixture for use in trimerizing and/or polymerizing isocyanates and/or for the polyaddition of active hydrogen atom containing polyethers and polyisocyanates comprising an amine as conventionally used in polyurethane chemistry in combination with an alkali metal salt of an inorganic acid and the trimerization and/or polymerization and/or polyaddition reaction utilizing such catalyst mixture.

Abstract: A process is provided for manufacturing a product which has a fibrous surface and is formed by the conversion of a non-fibrous polymer, which process comprises placing a polymer between drawing surfaces which adjoin the polymer and adhere thereto and separating the surfaces. At least one of the surfaces is formed by a carrier for the polymer and for the fibers, through which carrier a fluid is blown such as to flow around the fibers in statu nascendi and orient and stabilize them as their viscosity increases. An apparatus for carrying out said process is also provided.

Abstract: In the continuous production of rectangular foam slabs wherein a foamable reaction mixture is foamed on a forwardly moving floor web and lateral confining webs, and in which a cover web is applied during the foaming process to the surface of the rising foam, the improvement which comprises supplying said cover web from a supply to the surface under controllable tension, thereby exercising a controllable pressure on the surface of the rising foam, removing the cover web from the foam surface beyond the point at which the rising mixture has substantially reached its maximum height and passing the web rearwardly and then forwardly to serve as the floor web for receiving further foamable mixture.

Abstract: A process is provided for manufacturing a product which has a fibrous surface and is formed by the conversion of a non-fibrous polymer, which process comprises placing a polymer between drawing surfaces which adjoin the polymer and adhere thereto and separating the surfaces. At least one of the surfaces is formed by a carrier for the polymer and for the fibers, through which carrier a fluid is blown such as to flow around the fibers in statu nascendi and orient and stabilize them as their viscosity increases. An apparatus for carrying out said process is also provided.