Abstract: Described is a dry calibration device for extruders comprising a calibration head (2) having a calibration duct (3); the device also comprising a heat exchange jacket (5) positioned in contact with the calibration head (2) and suction means (9) associated with the calibration duct (3), while the heat exchange jacket (5) comprises a thermally conductive element (6) positioned in contact with an outer surface (4a) of the calibration head and forming a contact surface (6a) extending continuously along a longitudinal axis (6A) of extension of the calibration head (2).

Abstract: A die apparatus including a flexible lip integrally connected to a main body, the lip configured to adjust a gap between the flexible lip and a second lip and includes a slide bar equipped with an array of linear bearings where the slide bar and bearings are positioned in a slot of the main body, the slot positioned in a spaced relation from the lip. In one aspect the slide bar includes a threaded hole to receive a fastener configured to fasten a pivot member to the slide bar, the pivot member configured to pivot in order to adjust the lip. The slide bar and bearings may be used on a variety of die apparatus having an integrally connected lip.

Abstract: An apparatus is disclosed for forming a non-woven web.

Abstract: A device for production of nanofibers through electrostatic spinning of the liquid matrix in electrostatic field between at least one spinning electrode and a collecting electrode positioned opposite thereto, while the spinning electrode contains at least one spinning member containing the cord, which comprises a straight section which is parallel with a plane of depositing the nanofibers and/or with the collecting electrode and it forms an active spinning zone of the cord. The cord of the spinning member is stationary or is displaceable in a direction of its length or is movable in a direction of its length either discontinuously or continuously and to the cord there is assigned a device for application of the liquid matrix on the cord in a direction of length of the cord.

Abstract: The invention relates to a nanofiber web preparing apparatus and method via electro-blown spinning. The nanofiber web preparing method includes feeding a polymer solution, which is a polymer dissolved into a given solvent, toward a spinning nozzle, discharging the polymer solution via the spinning nozzle, which is charged with a high voltage, while injecting compressed air via the lower end of the spinning nozzle, and collecting fiber spun in the form of a web on a grounded suction collector under the spinning nozzle, in which both of thermoplastic and thermosetting resins are applicable, the solution does not need to be heated and electrical insulation is readily realized.

Abstract: The present invention is one that heats the inside of the spinning pack in a short period of time while keeping temperature of an outer circumferential part of a spinning pack less than a maximum allowable temperature, and provided with: a magnetic path forming member that forms a magnetic path with a spinning pack arrangement space where the spinning pack is arranged to occupy the space and be positioned intermediate respective ends of the magnetic path forming member that border the space; and a magnetic flux generating winding that is provided so as to be wound to surround the spinning pack arrangement space.

Abstract: This disclosure is related to the manufacture of melt blown coreless tubular nonwovens. Such manufacture includes a melt blowing apparatus to deposit fibers onto a rotating mandrel for forming a tubular nonwoven; a puller device to withdraw the tubular nonwoven from the mandrel; and a cutting device to cut the tubular nonwoven into cartridges of a desired length. The puller device has a pair of drive axles mounted on a gap-setting device, such as a scissor jack or its equivalent. Each drive axle includes one or more driven multi-directional puller wheels, which is formed of or surrounded by non-driven rollers. When the rollers engage the rotating tubular nonwoven, the tubular nonwoven is pulled axially and steadily from the mandrel without affecting the rotational motion of the tubular nonwoven. As a result, the tubular nonwovens have consistent dimensions and quality without damage to the inner or outer surfaces of the tube.

Abstract: The invention relates to a process for melt-spinning, drawing and winding multiple synthetic threads and to an apparatus for performing the process. The synthetic threads are spun concurrently side by side through extrusion of fine filamentous strands, cooled down and hauled off to be then collectively drawn as a sheet of threads and wound up on bobbins. To obtain ideally identical physical properties in the collective treatment of the threads, the threads are hauled off independently of each other by separate individual godets after extrusion and before collective drawing. This makes it possible to realize for each thread the same conditions during extrusion, cooling and hauling off. The apparatus includes multiple individual godets arranged side by side, which are arranged upstream of the drawing facility and are each associated with one of the threads. To pull off the threads, the individual godets are configured to be individually driveable.

Abstract: A die comprising two die cavities, with each capable of supplying polymeric material, and a distribution plate interposed between at least a portion of each of the two die cavities. The distribution plate has a dispensing edge and a plurality of extrusion channels. First and second extrusion channels extend from entrance openings at the first and second die cavities, respectively, to exit openings on the dispensing edge. The exit openings of the first and second extrusion channels are disposed in alternating positions along the dispensing edge. A method of extruding with such a die and an extruded article made therefrom are also disclosed. The method includes co-extruding a first polymeric composition and a second polymeric composition. The extruded article comprises a plurality of longitudinal first stripes of the first polymeric composition alternating with a plurality of longitudinal second stripes of the second polymeric composition.

Abstract: An apparatus for extruding foodstuffs is comprised of a one-piece housing having an inlet configured to be attached to a food processing machine, a distributor portion integrally formed with the inlet, the distributor portion having at least two side walls outwardly angled from the inlet, a die retaining portion configured for housing a die therein and integrally formed with the side walls, and an outlet through which an extruded food product can exit. A die defining at least one passage for forming a food product having a shape defined by the passage is inserted into the housing. A pair of removable retaining members extends through the housing and abuts against the die to retain the die within the housing.

Abstract: The invention provides a coextrusion feedblock. The feedblock has a flow adjuster comprising a plurality of independently rotatable adjustment segments. Actuators are coupled with respective adjustment segments of the flow adjuster, such that the segments can be rotated by operating the actuators. The invention also provides a coextrusion profiling insert assembly for mounting removably in a coextrusion feedblock.

Abstract: An automated extrusion construction system may include an extrusion nozzle configured to extrude construction material in a substantially horizontal direction against an elongated and substantially vertical surface. An extrusion nozzle may have a height adjustment mechanism configured to adjust the height of an outlet in response to level deviations in the surface on which the construction material is extruded by the extrusion nozzle. An automated extrusion construction system may include a slicing mechanism configured to controllably slice through the extruded layer.

Abstract: The present invention is directed to an apparatus for differential cooling of a plastic film tube. The apparatus and method includes the use of a blown film extrusion die that extrudes a plastic film tube upward. An air cooling system applies cooling air across one or more surfaces of the plastic film tube. One or more throttling valves are coupled to a pressurization pump that provides a pressurized working fluid, preferably water. The throttling valves are positioned to project the pressurized working fluid from outlets of the throttling valves towards circular arcs of the plastic film tube, the circular arcs of the plastic film tube being less than the circumference of the plastic film tube to provide a blown film tubular plastic film with controlled gauge variation.

Abstract: An extrusion-forming device includes an extruding portion having a drum including a supply port through which a clay flows into the inside, a screw having a rotary shaft and a rotary blade and configured to convey the clay, and an extrusion port through which the clay is discharged; and a forming portion having a die provided with forming grooves. The device includes, as the screw on the side of the supply port, supply port side screws having two rotary blades and, as the screw on the side of the extrusion port, a extrusion port side screw having one rotary blade, and a ratio P/D is in a range of 0.5 to 0.9.

Abstract: A self-cleaning plasticizing venting and extruding apparatus by co-rotating non-twin multi-screws and a method thereof are provided, said apparatus comprises a screw mechanism, barrel, feeding port, venting port, discharging port, and driving mechanism. Said screw mechanism comprises non-uniform central screw and lateral screws, the axis of the central screw coincides with the barrel, and the lateral screws are provided on both sides of the central screw and engaged with the central screw; the contour lines of the threads of said central screw and said lateral screws are tangent to the inner wall of the barrel; and said driving mechanism is connected to the central screw and lateral screws. Each screw-uses an asymmetrical flow channel shape, so the flow space is asymmetric, and the compounding intensity and effectiveness enhanced. The dispersion and mixing effects are excellent, generating a self-cleaning effect. The system is suitable for high yield nano-material processing.

Abstract: A thin film sheet manufacturing apparatus includes: an extruder; a cooling water tank; a dehydration tank; a dehydrator; and a winder for winding the thin film sheet passing the dehydrator, wherein the dehydrator includes: a support frame extending back and forth; a transferring roller; upper and lower air blowing pipes; an air blower connected to the upper and lower air blowing pipes to supply air of high pressure to the upper and lower air blowing pipes; and support rollers disposed in front of the upper and lower air blowing pipes for supporting the thin film sheet to be supplied between the upper and lower air blowing pipes.

Abstract: A method and apparatus for applying a sealant material onto a surface. In one illustrative embodiment, an apparatus comprises a dispenser and an adjustment system associated with the dispenser. The dispenser is configured to receive a sealant material from a sealant source and dispense the sealant material through an output of the dispenser. The adjustment system is configured to change a configuration of the output.

Abstract: The invention relates to an extruder which has an extruder housing. The housing has at least two housing parts and is provided with a delivery channel in order to extrude a medium, at least one screw conveyor being located in said channel. The extruder housing is releasably retained on a frame by means of a first retaining device and a shaft section of the screw conveyor is releasably connected to a drive device. According to the invention the housing parts are fixed relative to one another by means of a second retaining device and the extruder housing is connected to the frame and secured against displacement in the longitudinal direction of the extruder housing by means of a third retaining device. When the first and third retaining device) are released, the housing parts can be removed as a unit from the frame.

Abstract: A microconduit network structure and methods for making the same. One aspect of the invention relates to a microconduit network structure, including: a solid or semi-solid matrix having at least one interconnected web of filaments formed within the matrix; and wherein at least one interconnected web of filaments having diameters of about 10 nm to about 1 mm.

Abstract: The present invention relates to a device for fiber excess length stable control in an optical cable loose tube, which is disposed between a loose tube extruder and a loose tube tractor. The device forms the following structures: an extrusion section connected to the extruder, a traction section connected to the tractor, and a transition section connecting the extrusion section and the traction section, where loose tube displacement generated at the extrusion section is greater than loose tube displacement generated at the traction section. The present invention provides a device for fiber excess length stable control in optical cable loose tube with a simple structure and an excellent excess length control effect.