Abstract: A diaphragm blade for a diaphragm-blade assembly having a plurality of diaphragm blades forming an opening of a diaphragm. The diaphragm blades cooperatively move to change the diameter of the opening of the diaphragm. Each diaphragm blade has a thin blade sheet and a pair of protruding engage members formed on the blade sheet. Each diaphragm blade is integrally formed with the protruding engage members by injection molding synthetic resin.

Abstract: A spinneret for manufacturing modified cross-section fibers with optical function includes a middle spinneret for spinning an island portion, which has a base and an opening for extruding a melt polymer for forming an island portion. A partition device is mounted to the middle spinneret to partition the opening thereof, the partition device having an opening communicating with the opening of the middle spinneret which protrudes-from the base thereof.

Abstract: A mixing system is provided for mixing and dispensing measured volumes of kneaded material. The system includes an adjustable frame, top and side feeder assemblies, a cutter assembly. The top feeder assembly is secured to the frame and maintains a supply of raw kneadable material and minor ingredients to the side feeder assembly. The side feeder assembly includes an input housing, receiving raw material from the top feeder assembly and a preblender housing in communication with the input housing. A pair of oppositely rotating helical screws are disposed within the input and preblender housings for transporting the kneadable material to the kneader cylinder. The input and preblender housings are detachably connected to one another and slidably mounted on the frame, for selective movement between operating and cleaning positions. The preblender housing is also rotatably mounted on the frame, which further facilitates cleaning the unit.

Abstract: The invention is an improvement to mold frames having replaceable half-molds for forming golf balls. The invention is directed to dividing the flow path through the mold for the thermal medium into a plurality (2 to the number of cavity rows) of parallel flow paths, i.e., water entering the mold flows through only one row of half-molds.

Abstract: A wire separator apparatus for a food sheeter includes motor driven feed spools of separator wire, the separator wire being suspended from wire pulleys across the face of a roller. Motor driven take-up spools collect separator wire dispensed from the feed spools as the separator wire is automatically moved across the face of a roller. A fresh section of separator wire is continuously drawn across the roller, substantially eliminating wire breakage.

Abstract: A thermoforming apparatus having a plurality of dies for forming a plurality of thin walled plastic articles in combination with an improved movable extractor plate assembly for moving an extractor plate between the plurality of dies of the thermoforming apparatus to remove formed articles is described. The movable extractor plate assembly includes an extractor plate having a vacuum chamber connected to the outlet end of a vacuum source and having at the inlet end of the vacuum source a pressure control valve and a vent valve between the vacuum source and pressure control valve. The assembly permits the control of pressure to the vacuum chamber to provide holding contact of articles formed onto the extractor plate without deformation of the thin walled articles. Additionally, the assembly permits the injection of air pressure into the vacuum chamber upon closing of the vacuum source to facilitate release of the formed articles from the extractor plate.

Abstract: An extrusion head having a stationary part fixed on an extrusion installation having a plurality of extrusion cylinders supplying an extrudate formed from several components. The stationary part has extrudate flow channels each in communication with a respective extrusion cylinder and a common extrusion die. Two pivotable outer parts pivotally hinged on the stationary part are selectively swingable individually between open and closed positions by respective piston-cylinder units. The two outer parts define an extrusion orifice for the die in their closed position. A pair of locking piston-cylinders provided with hammerhead piston rods hold the respective outer parts clamped against the stationary during an extrusion. Actuator piston-cylinder units selectively swing the piston rods of the locking piston-cylinder units clear of the outer parts for opening them for cleaning extrudate channels or for an extrusion die change.

Abstract: The rotational molding apparatus includes a main support member having at least one arm extending therefrom. Each arm of the apparatus is adapted to rotate enclosed articles being formed or coated about at least one axis. In order to cool the arms during operation, each of the arms includes a cooling channel extending down the length of the arm through which a cooling fluid is circulated. Each arm further includes a fluid return in communication with the cooling channel which receives the cooling fluid at the end of the arm and recirculates it back to the main support member so that the cooling fluid does not interfere with the rotational molding process.

Abstract: An apparatus for producing a multilayer molded article including a resin body and at least one sheet of a skin material, an edge part of which is present in a surface area of the resin body. The apparatus includes a mold, and a clamping device for clamping an edge part of a skin material or mated edge parts of adjacent skin materials during molding.

Abstract: Apparatus for drawing filament bundles present in the form of a curtain comprises an injector which is rectangular in horizontal section and which is adjoined by a drawing shaft in the form of two parallel plates. At least one of the plates comprises a plurality of pressure measuring elements arranged in the form of a grid whereby the velocity distribution of the drawing gas in the drawing shaft can be adjusted through local variation of the geometry or the amount of drawing gas in the drawing shaft.

Abstract: A spinning device for the production of man-made fibers, in particular of cellulose regenerated fibers, including at least one spinning pump, at least one feed pipe line, at least one spinneret and a bath-like container for the precipitation bath whereby the feed pipe lines can be swivelled around at least one joint at any one time which is characterized in that the joint is movable in substantially horizontal and vertical direction. In one embodiment of the device the joint can be swivelled around one pivot respectively. With the device according to this invention, it is possible to simply swivel the spinnerets out of a deeper container which is required to enable a longer immersion path of the fibers.

Abstract: An ice sculpture mold having a bottom die half forming a cavity configured to produce a first half portion of a three-dimensional ice sculpture and a top die half with a cavity to produce the second half portion of the ice sculpture. In one embodiment straps are employed to hold the two die halves together during freezing. In another embodiment, a unique leak proof hinge is employed on one side and a latch on the opposite side.

Abstract: An apparatus for producing an oriented plastic strap having a predetermined desired thickness for use in connection with the strapping of packages or the like. Heating is provided in connection with the surface of the sheet workpiece which is exposed to the ambient air prior to entry of the workpiece into the nip defined between the pair of rollers such that both surfaces will have similar temperature levels so as to exhibit similar density properties, and still further, the edge portions of the sheet workpiece are also heated so as to advantageously control the degree of flatness of the sheet material or workpiece across the width thereof.

Abstract: An apparatus and method includes a mold which defines a mold cavity with an inlet through which a molten, moldable material can pass into and/or through the mold cavity. A feeder for preparing the molten, moldable material, is spaced from the mold and expels the material to the mold cavity or to an accumulator connected to the mold cavity. A mechanism for controlling the temperature of the material in the feeder, accumulator, and the mold, as well as at least one gas injection unit with controls for the gas before, during and after its injection into the mold cavity and/or into gas channels located within and/or around the mold cavity are provided. A closed loop regulating system easily adjusts and regulates the gas flow and monitors the average gas pressure of the injected gas according to a programmed conditioning signal. The gas injection unit has relief valves and gas tanks.

Abstract: An external stabilizer employed in a plastic film blowing apparatus incorporates one or more extruded members that carry a low-friction plastic wear cover. A tubular die, fed with a supply of molten thermoplastic polymer, extrudes a tube of the molten polymer and injects air into said extruded tube to inflate the tube into a bubble. The wall of the tube expands into a film of a desired thickness; and the tube is drawn vertically upward and collapsed and flattened. The external stabilizer is positioned on a frame surrounding the extruded tube above the die to keep the tube aligned on a predetermined path as the tube is drawn upwards. The stabilizer includes at least one extrusion of a light-weight material having a profile that is rounded on a side that faces the extruded tube so that said extrusion has a rounded front surface. The associated wear cover is made of a wear resistant plastic material and is disposed on said rounded front surface of said extrusion.

Abstract: Apparatus for blow-molding an article curved in three dimensions comprises two horizontally movable mold parts which, when in contact with each other, define a mold cavity curved in three dimensions to match the required article. An extrusion head extrudes a parison of synthetic resin material into the cavity so that it descends towards the lower end thereof. During this process, a first air flow is fed through apertures in a cover and passes through the mold cavity around the outside of the parison to ease the passage of the parison towards the lower end. In addition, a second air flow is fed through a nozzle in the extrusion head into the interior of the parison so as to help it descend and also to prevent its distortion as it moves into the mold cavity. Thereafter, closure members, which are slidable on, but movable independently of, the main mold parts, close off the upper and lower ends of the mold cavity and pinch the parison between them, their movements being controlled by respective actuators.

Abstract: An apparatus for trimming blow-molded products while in the mold including the steps of placing a parson between a mold having two mold halves, moving the two mold halves to form a cavity and close a portion of the parison, pressurizing the inside of the parison to produce a product and trimming a portion of the product while it is in the mold by moving a cutter across the cavity and across the portion of the product to be cut. The mold halves are then separated and the product is removed therefrom.

Abstract: Within a casing (10), on each side of a center plane (A), a feeding channel (26, 28) and a pressure channel (32, 34) are defined. The pressure channels (32, 34) are converging in the direction of a jet arrangement (40). Further, within the casing (10), on each side of the center plane (A), a first and a second rotatably driven feeding roll (42, 44), respectively, are disposed each between one of the feeding channels (26, 28) and the associated pressure channel (32, 34). The feeding rolls (42, 44) have their axes of rotation define a transverse plane (B). Two additional rotatably driven rolls (52, 54), disposed within the casing (10) on one side each of the center plane (A), define together with one each of the feeding rolls (42, 44) a nib (62, 64). On the side of the transverse plane (B) which is remote from the jet arrangement (40), at least a third rotatably driven feeding roll (46) is provided, having assigned to it a third inlet channel (30) and a third pressure channel (36).

Abstract: A mold assembly for injection molding including a female mold having a first pair of opposite inside walls and a second pair of opposite inside walls disposed at four sides and defining a trapezoidal cavitys two trapezoidal locating plates respectively fastened to the first pair of opposite inside walls inside the female mold, and defining two symmetrical pairs of sliding ways within the female mold at different elevations between the trapezoidal locating plates and the second pair of opposite inside walls, and a mold set fitting the trapezoidal cavity of the mold set, the female mold consisting of a left mold half and a right mold half detachably abutted together, each mold half having two sliding tongues at different elevations and slidably fitted into the sliding ways.

Abstract: A system for unnesting a molded hardboard from a cavity die includes an air nozzle which directs a jet of air at a lower corner edge of the die. The air jet slightly lifts the board from the die to enable a loader tray to engage the edge of the board and push the board out of the die.