Abstract: A hot runner valve gated system comprising at least one nozzle housing adapted to be positioned in a manifold plate. The nozzle housing includes a gate orifice and a reciprocal valve stem positioned therein. The system also includes a mechanism for moving the valve stem for opening and closing the gate valve and is designed to maintain the mechanism for moving the valve stem in a substantially cooled state. The mechanism for moving stem is positioned coaxially relative to the nozzle housing.

Abstract: The present invention relates to an apparatus for injecting molten plastic material. The apparatus includes a novel bushing arrangement have a threaded portion which forms part of a mechanical connection between the bushing and an air piston housing so as to reduce the possibility of plastic material leaking between the bushing and the air piston housing. The bushing has a melt channel for mating with a melt channel in a manifold in which the bushing is housed and with an axial channel in a nozzle body. The bushing is sized to fit within a bore in the manifold so as to reduce the possibility of leakage between the bushing and the manifold. The bushing also serves to close off or plug holes or channels drilled into the manifold. In one embodiment of the present invention, the bushing has a passageway through which a valve stem for closing off a gate in the nozzle body passes.

Abstract: The present invention relates to an improved take-off plate device for removing molded articles from a molding machine and delivering them to a transfer or receiving station. The device of the present invention includes a plate, one or more tubes mounted to the plate for receiving molded articles, and one or more ejector bars for engaging portions of the molded articles to remove or eject them from the tubes. Each of the tubes is provided with a cooling passageway for effecting cooling of the molded articles as they are moved between the molding machine and the receiving station. A bottom plug, which is in contact with the cooling passageway, is provided in each tube to more efficiently cool an end portion of the molded article in the tube. Preferably, the bottom plug has an end surface which matches the shape of the molded article end portion.

Abstract: The present invention relates to an apparatus for injecting molten plastic material. The apparatus includes a novel bushing arrangement have a threaded portion which forms part of a mechanical connection between the bushing and an air piston housing so as to reduce the possibility of plastic material leaking between the bushing and the air piston housing. The bushing has a melt channel for mating with a melt channel in a manifold in which the bushing is housed and with an axial channel in a nozzle body. The bushing is sized to fit within a bore in the manifold so as to reduce the possibility of leakage between the bushing and the manifold. The bushing also serves to close off or plug holes or channels drilled into the manifold. In one embodiment of the present invention, the bushing has a passageway through which a valve stem for closing off a gate in the nozzle body passes.

Abstract: The invention relates to the manufacture of mineral fiber products or similar fibrous materials, in which fleece formation occurs in a continuous process in a fiber collecting chamber and in which, in order to obtain specific strength characteristics, there are added binding agents. According to the invention, and in contrast to the known methods, a thin fiber fleece is formed at first without addition of a binding agent in a suction chamber and is then transported into a subsequent spraying and collecting chamber which is completely separated from the suction chamber. In the spraying and collecting chamber, the fibers of the thin fleece, after leaving the suction chamber, freely fall downwardly onto a collecting belt, where they accumulate into a crude fiber fleece for further processing. During the free fall, the fibers are sprayed with a binding agent added in optimum quality, mixture and dosaging.

Abstract: The disclosure deals with a clamping device for molds used in blow molding of hollow plastic articles having two halves of the mold for forming the sides of the hollow plastic article and a bottom part, wherein the halves of the mold can be moved away from each other. The invention is characterized in that during the opening of the mold the halves of the mold are moved away from each other in a longitudinal direction to said hollow plastic article and, at least partially simultaneously, in a perpendicular direction to said article.

Abstract: A transfer device for open neck plastic parisons and finished articles in injection blow molding equipment. The device includes a core or pin which is attached to a plate and can be inserted into the parison or finished article. A collet is included which is supported by the core, an extension of the core, or the plate in such a way that the collet grips the neck of the parison or finished article when in one position, and releases it when in a second position.