Abstract: A coating/drying device including a first application device, a second application device and a drying device. The first application device for applying application medium to a first side of a fiber material web, moving in a running direction. The second application device for applying application medium to a second side of the fiber material web, the second side being opposite the first side. The second application device being an application device operating without contacting the fiber material web. The drying device is arranged downstream of the first application device and the second application device in the running direction of the fiber material web.

Abstract: A strand coating system and method including drawing (710) a strand having major and minor dimensions past an adhesive dispensing nozzle, orienting (720) at least a portion of the strand so that the major dimension of the strand is substantially parallel to a direction in which adhesive is dispensed from the adhesive dispensing nozzle as the portion of the strand is drawn past the adhesive dispensing nozzle, and applying (730) adhesive to the strand as the strand is drawn past the adhesive dispensing nozzle.

Abstract: A liquid dispensing module and nozzle or die tip for dispensing at least one liquid filament from a liquid discharge passage onto at least one moving strand. A strand guide is used for guiding each strand past the nozzle and/or locating each strand relative to the discharged liquid filament. The nozzle includes a process air outlet that supplies a stream of process air impinging each moving strand before the liquid filament is dispensed onto the strand.

Abstract: An apparatus and a method for forming a sheath over an elongate member comprises an extruder that has an output to supply a melt material having a temperature. A heat exchanger connected downstream the output of the extruder removes heat from the melt material in a controlled manner. An elongate member, which may be a cable core, is supplied to a crosshead that is connected downstream the heat exchanger to surround the elongate member with a sheath of the melt material.

Abstract: Apparatus and methods for coating elongated medical devices, such as guidewires and catheters, incorporating infrared (IR) heating tools for curing the coating while the medical devices are still in place on the coating apparatus. Coating and curing may be accomplished evenly in a dipping machine by utilizing IR heaters having heating heads with openings, the heating heads being mounted for the extension of such elongated medical devices through their openings so that the heating heads are in generally surrounding juxtaposition to the elongated medical devices. The voltage supply to the IR heaters may be selectively adjusted so as to match the wavelength of the generated IR heat to the energy absorbing capability of the particular coating solution being utilized for proper timed absorption of the infrared energy.

Abstract: There is provided an extrusion head that is capable of largely increasing a production speed rather than a conventional head that extrudes supplies a high viscous melt-coating composition.

Abstract: Disclosed are fiber coating sizing applicator apparatus having a member to remove unused sizing and foreign objects from the fiber coating element of the applicator on a continuous or intermittent basis. Also disclosed are sizing applicators having as part of the drive, a servo motor for reduced variation in sizing application. Unused sizing is filtered to remove foreign objects and returned the applicator right away, or stored in a temperature controlled area until ready to feed back to a sizing applicator. Also disclosed are methods of using the sizing applicator apparatus to produce sized fibers. The apparatus and methods of the invention produce a substantial reduction in the fiber break rate, sizing usage and applicator maintenance.

Abstract: The apparatus has a feed apparatus (10) and an evening-out apparatus (100) placed underneath the feed apparatus. The feed apparatus (10) has a feed chamber (12) with an inlet opening (13a), an outlet opening (13b), and a nozzle plate (18) with holes (19) and communicating with the outlet opening (13b) of the feed chamber. The evening-out apparatus (100) has at least one inclined surface (110) which forms a downwards sloping flow path (L1) for the treating agent. Jets discharge from the feed chamber (12) outlet opening (13b) through the nozzle plate (18) holes (19) to form a first treating agent flow (F1). One inclined surface (110) of the evening-out apparatus (100) receives the first treating agent flow (F1) and a second treating agent flow (F2) formed into an even laminar treating agent flow on the flow path (L1) of the evening-out apparatus (100) is passed onto a moving surface (200).

Abstract: An apparatus for making a wet roll including a body of a roll of wet wound sheet material, where the body of the roll is connected to a tail of the roll, means for applying an adhesion promoter between the body and the tail and means for contacting the body and the tail. The body and tail of the roll contain a wetting solution.

Abstract: Apparatus for applying glue to veneer sheets comprises elements (6, 7, 8) for transporting veneer sheets (3), supported substantially in a horizontal position, to the gluing, a glue applying device (2) for administering glue onto the veneer traveling under it, as well as elements (9, 10, 11) for directing the glued veneers (4), supported substantially in a horizontal position, to a further processing, said conveying elements being located with respect to each other so as to leave in the direction of transport a transfer gap aligned with the glue administering device (2). The device further includes means for forcing the veneer to be glued and the glued veneer at its center portion in the direction of transport to a different level than the edge portions thereof in the direction of transport.

Abstract: A method and an arrangement in connection with a production line for optic cable, wherein optical fibers (1) are guided to a coating point (3), where filling gel is applied around the fibres, and a loose tubular casing is formed around the fibres and the filling gel. The fibres (1) are guided to the coating point through a device (4) that is formed from three parts (4a, 4b, 4c), said device being supported on a first base (5) and on a second base (6) moving in the travel direction of the fibres. Sensors (7, 8) are arranged in the first and second bases (5, 6) for measuring the force acting on the bases (5, 6). The arrangement further comprises means (9) for calculating the difference between said measured values for determining the friction force between the fibres and the tubular device (4).

Abstract: An apparatus for plating a wire material is provided in which a range of the plated layer where the temperature is high and flowability is large, thus, easily generating thickness deviation, and a range of the plated layer where the temperature is low and the flowability is small, thus generating thickness deviation only with difficulty are allowed to cool in an appropriate manner, respectively, whereby a plated wire material whose thickness deviation is not more than 2.0 can be produced with high productivity in a stable manner.

Abstract: A nitrogen injection assembly for use in coloring and curing optical fibers is disclosed. The nitrogen injection assembly includes a cover section and a distribution seal. An optical fiber coated with ink passes from a coating die to a curing chamber via a passageway defined by the cover section and the distribution seal. The distribution seal injects nitrogen into the passageway to keep the coated fiber and the curing chamber substantially free of oxygen. With the distribution seal positioned closer to the curing chamber than the cover section, the apparatus minimizes the risk of leaks in the passageway and the number of required seals.

Abstract: A new and improved strand coating system comprises a strand guide block which serves to properly position and orient a plurality of elongated, parallel strands, which are being respectively conveyed in front of a plurality of the material dispensing nozzles, in such a manner that the plurality of elongated, parallel strands can assuredly be respectively disposed within common planes which are effectively formed between the strand guide slots defined within the strand guide block and the plurality of material dispensing nozzles whereby the dispensed hot melt adhesive materials can be properly applied to and coated upon the elongated strands prior to the adherence of the elongated strands upon suitable substrates so as to, in turn, ensure the desirably secured adherence of the plurality of elongated strands upon the particular substrates when the elongated strands and the substrates are mated together.

Abstract: An apparatus for making reinforcement ply material wherein reinforcement elements are grouped in untwisted sets and adjacent reinforcement elements in the same set are spaced apart a distance less than the distance between adjacent sets. The apparatus includes an extruder and a die head into which the extruder extrudes an elastomeric material. The die head defines a die throat and includes a guide insert which guides the reinforcement elements into the die throat. The guide insert has passages through which the reinforcement elements pass and which are arranged in a pattern corresponding to the arrangement of the reinforcement elements in the reinforced ply material.

Abstract: The present invention includes an apparatus for combining a water barrier fluid to a bundle of optical fibers including an entrance die having an orifice which is dimensioned to allow for a bundle of optical fibers to be drawn therethrough. Also, an exit die having an orifice is provided. The entrance die and the exit die, respectively, have inner sides which define a cavity. The cavity is in fluid communication with the orifice of the entrance die and the orifice of the exit die, such that a gap is formed at a meeting point between the cavity and the respective orifices of the entrance and the exit die. The gap is radially surrounded by an extension of the cavity to define a critical flow region. A plurality of baffles are formed in the exit die which are operative to inject fluid into the cavity. Also provided is a main body which supports the entrance die and the exit die. The main body includes a passageway that is in fluid communication with the plurality of baffles.

Abstract: A container with a quantity of coating liquid includes a luminescent pigment and a paint base. An impeller is in proximity to the bottom of the container to keep the pigment in suspension in the paint base. The container also has a linear inlet slot and a linear outlet slot. A feeding assembly includes a supply roll, a take up roll and a plurality of idler rolls to move a plurality of nylon straps from the supply roll, across the take up rolls and through the container and liquid therein and to the take up roll. A drying assembly is provided for nylon straps moving between the outlet slot and the take up roll. Also provided is a method and material.

Abstract: An electric wire 1 is moved in a moving direction at a desired speed. An insulating layer of varnish is formed on the outer surface of the electric wire 1 by a device for applying the varnish. The device includes a rough-like container 2 and dropping means 8. The rough-like container 2 is located below the electric wire 1 in the moving direction. The dropping means 8 is located for the electric wire above the container. A desired quantity of varnish is dropped from the dropping means 8 toward the outer surface of the electric wire 1 through a flow rate adjusting portion. The flow rate of the varnish is adjusted by the flow rate adjusting portion 9.

Abstract: A fiber coating applicator includes a chamber and a cup positioned over the chamber. The cup is connected to the chamber by an entrance aperture. The chamber includes an exit aperture opposite the entrance aperture. The cup, entrance aperture, chamber, and exit aperture define a pathway for a fiber, such as an optical fiber, to be coated. The chamber further includes an input port for pumping a coating material into the chamber. The entrance aperture is dimensioned such that as a fiber travels along the pathway and coating material is pumped into the chamber, coating material travels upward through the entrance aperture around the fiber into the cup, the upward flow of coating material being restricted by the fiber and entrance aperture such that there is a hydrostatic pressure in the chamber. The exit aperture is dimensioned to shape coating material around a fiber traveling along the pathway.

Abstract: The invention relates to a device for hot dip coating metal strand (1), particularly strip steel, in which the metal strand (1) can be vertically guided through a reservoir (3), which accommodates the molten coating metal (2), and though a guide channel (4) connected upstream therefrom. An electromagnetic inductor (5) is mounted in the area of the guide channel (4) and in order to retain the coating metal (2) inside the reservoir (3), can induce induction currents in the coating metal (2) by an electromagnetic traveling field. While interacting with the electromagnetic traveling field, the induction currents exert an electromagnetic force. The inductor (5) has at least two main coils (6) that are arranged in succession in movement direction (X) of the metal strand (1), and has at least two correction coils (7) for controlling the position of the metal strand (1) inside the guide channel (4) in direction (N), which is normal to the surface of the metal strand (1).

Abstract: A liquid dispensing module and nozzle or die tip for discharging at least one liquid filament. The nozzle includes a strand guide for guiding a substrate past the nozzle and a frustoconical protrusion disposed on a surface of the nozzle adjacent the notch. A liquid discharge passage extends along an axis through the frustoconical protrusion and forms an acute angle with a machine direction corresponding to movement of the strand past the nozzle. Four air discharge passages are positioned at the base of the frustoconical protrusion. Each of the air discharge passages is angled in a compound manner generally toward the liquid discharge passage and offset from the axis of the liquid discharge passage to create the controlled pattern of liquid material on the strand.

Abstract: The optical fiber coating device includes a die-support into which is integrated in one piece a grid, the die-support accommodating an entry die and an exit die with the entry die on one side of the grid and the exit die on the other side of the grid. The outside diameter of the die-support on each side of the grid is greater than the outside diameter of the grid, so as to define a chamber which has a large volume when the coating device is placed in its support.

Abstract: A filament bundle is rewound from a reel, and passes through various sorts of liquid in processing vessels to be used for plating. The filament bundle passes through a fixed guide roller and a movable guide roller while it travels within the liquid in the processing vessel. The movable guide roller is moved periodically, the filament bundle is stretched and slackened by turns, whenever the filament bundle is slackened or untied, the bundle is loosened. The filament bundle with each filament subjected to the plating is taken up to a take-up reel.

Abstract: A new die insert for an extrusion machine and a method of using the invention that includes a continuous strand of fiber reinforcing material to be statically drawn directly to the center of the molten flow of polymer base matrix is provided. The insert is placed in line with the discharge end of an injection molding apparatus. A molten flow of polymer base matrix proceeds in a straight linear fashion through the die. A fiber feed tube is centered on the interior of the die. As the polymer flows past the feed tube the molten polymer draws a continuous strand of fiber reinforcing into the center of the flow. The polymer is then extruded and cooled and the extrusion is further pelletized to produce injection molding feed stock material having continuous fiber reinforcing. The result provides a continuous extrusion process that allows the formation of a continuous fiber-reinforced product employing brittle fibers in one-step process.

Abstract: A corrosion-resistant coated strap is formed from an elongated metal strap base element having a width and a thickness and defining first and second sides and a pair of edge regions. A coating is applied and cured onto the base element. The coating has a substantially consistent thickness at the first and second sides and at about the edge regions. A method for making the coated strap includes providing a metal strap and conveying the strap through a coating apparatus. A powder is electrostatically applied on the first side of the strap, which covers the first side and the opposing edges. The powder is applied on the second side of the strap, covering the second side and the opposing edges. The powder is melted to form a flowable material and is cured on the strap. The coating method is carried out in an in-line strap manufacturing process.

Abstract: A nitrogen injection assembly for use in coloring and curing optical fibers is disclosed. The nitrogen injection assembly includes a cover section and a distribution seal. An optical fiber coated with ink passes from a coating die to a curing chamber via a passageway defined by the cover section and the distribution seal. The distribution seal injects nitrogen into the passageway to keep the coated fiber and the curing chamber substantially free of oxygen. With the distribution seal positioned closer to the curing chamber than the cover section, the apparatus minimizes the risk of leaks in the passageway and the number of required seals.

Abstract: A micro-extruder, comprising a funnel shaped tip piece defining a front aperture, through which wire is drawn, and a front rim, around which extrudate flows, and which has an outer diameter of less than 3.8 mm (150 mils). In addition, a structurally unitary cross-head body has a front aperture and a protruding rim about this front aperture. The funnel shaped tip piece protrudes through the front aperture. Also, a die having a surface that defines an aperture is adapted and positioned to abut the protruding rim and to form a seal against the protruding rim, so that no extrudate may leak out between the surface defining an aperture and the protruding rim.

Abstract: An apparatus for applying metered fluid such as sizing to an advancing individual yarn in a uniform manner. An elongated member includes at least one slot for receiving the advancing yarn and to bring the advancing yarn into contact with the metered fluid. The slot is defined by a width, a height and a length for affecting the distribution of the fluid on the advancing yarn. The length of the slot is dependent on the speed of the advancing yarn. The advancing yarn has a predetermined residence time in the slot as a function of the length of the slot and the speeding of the advancing yarn in the slot.

Abstract: Methods and devices are provided to actively apply finish to one or more yarns in motion at speeds greater than about 3000 m/min, to achieve a finish application of 0.2 wt. % or more, and with a coefficient of variation of finish concentration of 10% or less. The devices are compact, portable and readily installed at a variety of positions on a fiber processing line. The devices of the invention contain the finish so that contamination of the surrounding areas is prevented. The devices may be used to provide an overfinish to a moving yarn between heated godet rolls. The so-provided heating may be used to dry the yarn and to promote curing reactions in the finish and between the yarn and finish compounds. The invention also includes the finished yarn products so produced. A yarn with increased finish uniformity is provided with an overfinish actively applied and dried on the draw bench before the first winding operation.

Abstract: A rotary cable treatment assembly for use on cables having a non-circular cross section formed from a stator that housing a rotor formed from two hydraulically sealing bearings. A cable having a non-circular cross section is passed through the assembly wherein a lubricant or high viscosity inhibitor is pressurized to about 3000 psi within the assembly causing the fluid to coat all internal strands that form the cable. The rotor and hydraulically sealing bearings rotate according to the helix of the cable to reduce or eliminate wear on the cable and sealing.

Abstract: A method and an arrangement in connection with a production line for optic cable, wherein optical fibers (1) are guided to a coating point (3), where filling gel is applied around the fibres, and a loose tubular casing is formed around the fibres and the filling gel. The fibres (1) are guided to the coating point through a device (4) that is formed from three parts (4a, 4b, 4c), said device being supported on a first base (5) and on a second base (6) moving in the travel direction of the fibres. Sensors (7, 8) are arranged in the first and second bases (5, 6) for measuring the force acting on the bases (5, 6). The arrangement further comprises means (9) for calculating the difference between said measured values for determining the friction force between the fibres and the tubular device (4).

Abstract: An optical fiber coating forming device forms a coating of an ultraviolet light hardening type in an optical fiber by precisely controlling an ultraviolet light output of a light source. The optical fiber coating forming device has a light source (2) for irradiating ultraviolet light to resin for coating formation molded to a coating removing portion (4) of an optical fiber core wire (3), a light receiver (5) for detecting intensity of the ultraviolet light by receiving the ultraviolet light irradiated to the resin for coating formation from the light source (2), and an environmental sensor (20) for detecting environmental information. The environmental sensor (20) includes at least a temperature sensor (6) and selectively includes a humidity sensor (7) and an atmospheric pressure sensor (8).

Abstract: A method and apparatus for applying a polymer coating on an elongated substrate, preferably an elongate intracorporeal device in the form of a guidewire. An extrudable polymer cartridge is moved by a cartridge advancement mechanism into a guide chamber which is heated at an end with a die or orifice through which a desired portion of a guidewire may pass and be coated. Parameters such as guide chamber temperature, pull speed and force exerted by the cartridge advancement mechanism may be controlled with a computer program in order to achieve repeatable results. The guide chamber, extrudable polymer cartridge, die, and push tube may all be made from polymer components which can be reused or disposed of after a single use.

Abstract: The invention provides an apparatus and method which can be utilized to apply a thin layer of viscous coating material to an elongated continuously moving filament whereby the filament can be cabled, coated, and spooled in a continuous operation. The apparatus has a coating material applicator to deliver a flowable material, an air applicator to supply compressed air, a mixer to mix the flowable material and compressed air, a delivery means to spray the mixed flowable material and air onto a filament, and a coating chamber through which the filament passes. The chamber has a material collector and a coating die, and a sealing attachment with an exit hole is located beneath the coating chamber. The filament is sprayed before it travels into the material collector.

Abstract: A continuous galvanizing system includes a feed system for providing a continuous supply of material to be galvanized. A furnace receives the material from the feed system for heating the material. A continuous flux line applies liquid flux to the heated material at an exit end of the furnace prior to exposing the material to atmosphere. A zinc furnace galvanizes the heated material.

Abstract: An apparatus for forming a loop in a filament comprising a first wall having a first guide slot formed therein and a second wall having a second guide slot formed therein coplanar and parallel to the first guide slot. The first wall is opposite the second wall and each of the guide slots has opposing ends. A first gripper holds a filament at a first location. The first gripper is mounted from the first wall to the second wall at an end of each of the first guide slot and the second guide slot. The apparatus also includes a movable gripper to hold the filament at a second location. The movable gripper has a separation from the first gripper and is mounted from the first wall to the second wall adjacent to the other end of each of the first guide slot and the second guide slot for movement towards the first gripper to reduce the separation between them. This produces a loop of filament between the first gripper and the moveable gripper.

Abstract: In a pressure infiltrating apparatus 20 according to the invention, an upper end of an inlet side orifice 23 in the drawing is formed to take a tapered convex shape and a lower end of an insertion hole of an intermediate orifice 25 in the drawing is formed to take a concave shape having a diameter gradually increased corresponding to the convex shape of the inlet side orifice 23. Consequently, a space A between the inlet side orifice 23 and the intermediate orifice 25 is set to be small without damaging the fluidity of a molten metal 11 between the inlet side orifice 23 and the intermediate orifice 25 in a bath container 22.

Abstract: A liquid dispensing module and nozzle or die tip for discharging at least one liquid filament. The nozzle includes a strand guide for guiding a substrate past the nozzle and a frustoconical protrusion disposed on a surface of the nozzle adjacent the notch. A liquid discharge passage extends along an axis through the frustoconical protrusion and forms an acute angle with a machine direction corresponding to movement of the strand past the nozzle. Four air discharge passages are positioned at the base of the frustoconical protrusion. Each of the air discharge passages is angled in a compound manner generally toward the liquid discharge passage and offset from the axis of the liquid discharge passage to create the controlled pattern of liquid material on the strand.

Abstract: Dies which facilitate the threading of a strand are disclosed. Each die embodiment includes portions that move relative to each other to allow access to the area between the portions. One embodiment of a die embodying the principles of the invention includes an upper portion and a lower portion. Each die portion includes components corresponding to substantially half of a wirecoating die. Accordingly, when the die portions are adjacent each other, they form a complete wirecoating die. In the preferred embodiment, the upper portion is moveable relative to the lower portion, which is fixed. Each portion is coupled to a support by a conduit through which resin can be supplied to the particular die portion. The upper portion is pivotally mounted to the support for movement between an upper position in which the die is open and a lower position in which the die is closed. This die is used in an in-line wirecoating process in which a strand is wirecoated downstream from a bushing during a fiber forming process.

Abstract: An optical fiber coating die is made such that an interfacial shear rate of the optical fiber to the resin coat is calculated in accordance with a pressure value of resin inside a coating cup, and the interfacial shear rate is in a range of −1.5×105 to 0 sec−1. Also, an optical fiber drawing die is made such that the interfacial shear rate of the optical fiber to the resin coat is calculated in accordance with a diameter of a coating resin, and the interfacial shear rate is in a range of range of −3×105 to 2×105 sec−1. By doing this, an optical fiber drawing die which can be used in an optical fiber drawing method so as to realize stable resin coating operation even in high-speed drawing operation and high productivity can be realized.

Abstract: In an apparatus (4) for coating an optical fiber (3) with an UV curable polymer coating comprising a coating chamber (8) with an intake nozzle (6) and an outlet nozzle (7) for applying the coating to the optical fiber (3) as well as an UV source arranged behind the outlet nozzle, the end face of outlet nozzle (7) facing the UV source is coated with a material (11) that is antiadhesive with respect to the coating material.

Abstract: A tip assembly includes a tip having a nose portion. The tip defines a central bore. The nose portion includes a lip portion and defines a counterbore. The counterbore has a counterbore side wall and a seat surface. The counterbore is contiguous with the central bore. An insert member includes an inner surface, an outer surface and a side wall. The inner surface is opposite the outer surface. The side wall interconnects the inner surface and the outer surface. The insert defines a central aperture that extends from the inner surface to the outer surface. The insert is disposed within the counterbore such that the central aperture is substantially concentric with the central bore of the tip. The lip portion of the tip engages the outer surface of the insert.

Abstract: In an optical fiber coating method comprising the steps of; applying an injecting first coating resin to the outer periphery of the optical fiber while inserting the optical fiber through a first die hole provided in a first coating die; and applying an injected second coating resin onto the first coating resin while inserting the optical fiber through a second die hole provided in a second coating die.

Abstract: The invention relates to an arrangement in connection with a fibre coating line which comprises a fibre payout device (1) from which fibres are arranged to be guided to a press (2) for forming a coating round the fibres, a cooling device (3) for cooling a conductor formed by the coating and the fibres, a pulling device (4) by means of which the conductor formed by the coating and the fibres is pulled further from the press (2), and means for guiding the conductor to the next processing stage after cooling, whereby the pulling device (4) is arranged above the height of the line so as to enable the lowest point of the pulling device (4) to be substantially at the height of the line. To facilitate the start-up of the line, the pulling device (4) is arranged to be uplifted entirely above the height of the line substantially in a vertical direction.

Abstract: Continuous fibers are led through a roller nip which is formed between a pair of wetting rollers which are driven in opposite rotational directions and the surface of which has a coating of the flowable plastic material in a thickness which is sufficient for the constant filling of the roller nip with the plastic material. The wetted fibers are fed to the plastic material in the extrusion chamber, and the continuous fibers are mixed with the plastic material in the extrusion chamber. A device for carrying out the method includes a screw-type extruder having an extrusion chamber surrounded by an extruder barrel which has, in addition to the entry opening and the exit opening for the extruded plastic material, a lateral opening for the feeding in of continuous fiber material, and a wetting device for the wetted fiber material to be fed in, the outlet of which is in transporting connection with the lateral opening.

Abstract: The invention relates to a paper dispenser, especially to a paper dispenser for moistening reel paper.

Abstract: An apparatus for forming a loop in a filament comprising a first wall having a first guide slot formed therein and a second wall having a second guide slot formed therein coplanar and parallel to the first guide slot. The first wall is opposite the second wall and each of the guide slots has opposing ends. A first gripper holds a filament at a first location. The first gripper is mounted from the first wall to the second wall at an end of each of the first guide slot and the second guide slot. The apparatus also includes a movable gripper to hold the filament at a second location. The movable gripper has a separation from the first gripper and is mounted from the first wall to the second wall adjacent to the other end of each of the first guide slot and the second guide slot for movement towards the first gripper to reduce the separation between them. This produces a loop of filament between the first gripper and the moveable gripper.

Abstract: An apparatus and method for applying a lubricant to an advancing yarn, to facilitate the further processing of the yarn, and wherein the lubricant is composed of a plurality of components such as an emulsion of water and oil. The apparatus includes separate containers for the components of the lubricant, and a feed device for combining and mixing the components in a mixing chamber. The feed device also includes a pump for delivering the resulting lubricant to a wetting device which applies a metered quantity of the lubricant to the yarn. Provision is also made for maintaining a desired mixing ratio of the components of the lubricant.

Abstract: A coating die that includes an insert having a high thermal conductivity, which is greater than 1 W/cm*K. Preferably, the insert is made of diamond having a thermal conductivity in the range of 5 to 20 W/cm*K. Use of this highly conductive insert helps to efficiently dissipate the heat produced by viscous losses in the coating as most of these losses occur very close to the inner wall of the die in the land region. It also reduces to negligible level the wall temperature unbalance between opposite sides of the fiber when this fiber is off-centered thus restoring conditions prevailing at low draw rates and subsequent satisfactory centering force.

Abstract: A filament coating apparatus comprising a frame including a first filament holding fixture and a second holding fixture for releasably securing a filament adjacent to an extrusion coating fixture also attached to said frame. The extrusion coating fixture comprises a guide rod, a carriage movably mounted on the guide rod, and a coating head including an opening for directing a curable coating composition to a filament positioned in a channel formed in the coating head. A radiation source is aligned to the coating head for radiation curing of the curable coating composition applied to the filament. Both the coating head and the radiation source are joined to the carriage to move relative to a portion of a filament during application of curable coating composition to its surface.