Abstract: A device for producing Lyocell fibers which are extruded from a cellulose solution of water, cellulose and tertiary amine oxide in a spinning head (25). The cellulose solution is obtained in a number of process steps directly from the cellulose (3, 4) or with the formation of a cellulose suspension. Since the degree of polymerization decreases in the course of processing the cellulose through to its extrusion in the cellulose solution, with the processing of celluloses with a low degree of polymerization there is the risk that the endless molded bodies (2) extruded in the spinning head (25) exhibit defective quality.

Abstract: A spunbonding apparatus includes at least one nozzle, a coagulating tank, a deformation region, a slit passage, and a drawing flow pump. The nozzle extrudes at least one spinning solution. The coagulating tank contains coagulating liquid to coagulate the spinning solution into at least one fiber. The deformation region is located between the coagulating tank and the nozzle. The slit passage is connected to the coagulating tank and allows the fiber to pass therethrough. The drawing flow pump provides a drawing flow to the slit passage.

Abstract: A machine for manufacturing a nonwoven fabric includes a conveyer net, a spunbonding apparatus, and a container. In use, the spunbonding apparatus can project at least one fiber onto the conveyer net. The container can contain liquid, wherein the liquid level of the container is higher than at least a part of the conveyer net which the fiber is projected onto.

Abstract: The present invention generally relates to a cooling process and system that can be utilized in the manufacture of flexible elongate extruded materials, such as tubing or jacketed electrical wire and cable. More particularly, the present invention relates to a cooling trough for cooling flexible elongate extruded materials after extrusion. Cooling trough embodiments have a base, a wet cooling chamber above the base, and an air dry chamber above the wet cooling chamber. The base contains a reservoir for collecting and storing a cooling liquid. An extruded material, such as a cable, enters the wet cooling chamber, where the cooling liquid from the reservoir is sprayed onto the material, the material is then passed to the air dry chamber where it is dried.

Abstract: The invention provides a tow prepreg having improved productivity and performance. In various embodiments, the tow prepreg has 90% or more resin impregnation and a FAW greater than 600 g/m2. A method of making the prepreg by impregnating each continuous reinforcement fiber strand with a thermosetting resin is also disclosed. In various embodiments, the resin is applied to the reinforcement fiber while flattening the fiber between heated rollers positioned in parallel to each other.

Abstract: An apparatus for manufacturing a three-dimensional netted structure, the three-dimensional netted structure including a plurality of filaments of resin, the filaments being helically and randomly entangled and thermally bonded together, the apparatus including: an extrusion molding machine including a plurality of dies each having a mouthpiece with a plurality of holes; a pair of endless conveyors provided with endless members; a motor adapted to drive the endless members; and a tank adapted to partly submerge the endless conveyors therein. A method of manufacturing a three-dimensional netted structure using the apparatus by extruding molten filaments of a thermoplastic resin downward from the dies via the mouthpiece, helically entangling the molten filaments by entangling actions of the endless members, and cooling the entangled filaments in a liquid in the tank.

Abstract: A method of forming a sheet wafer 1) passes at least two filaments through a molten material to produce a partially formed sheet wafer, 2) directs a cooling fluid at a flow rate toward the partially formed sheet wafer to convectively cool a given portion of the partially formed sheet wafer, and 3) monitors the thickness of the given portion of the partially formed sheet wafer. To ensure appropriate thicknesses of the wafer, the method controls the flow rate of the cooling fluid as a function of the thickness of the given portion of the partially formed sheet wafer.

Abstract: A bituminous membrane production system having a cooling/finishing station designed to receive a bituminous strip made from at least one semisolid bituminous mix; feed the bituminous strip in a given travelling direction; and cool at least one of the two major surfaces of the bituminous strip as it moves forward; the cooling/finishing station having a strip cooling device, in turn having a cooling roller; a cooling fluid source for wetting the outer cooling surface of the cooling roller with cooling fluid; and rotation means for rotating the cooling roller, so that, as the cooling roller rotates, the cooling fluid on the outer cooling surface is brought into contact with one of the major surfaces of the bituminous strip.

Abstract: The invention relates to a method and a device for melt spinning and cooling a plurality of monofilaments which are extruded through a plurality of openings of a spinneret and guided into a cooling bath. The removal process consists of redirecting the monofilaments within the cooling bath. According to the invention, in order to prevent adhesion and an oblique pull-off, the monofilaments are divided into multiple filament groups after extrusion, said groups consisting of multiple monofilaments, and the filament groups are individually redirected independently of each other within the cooling bath into multiple redirecting positions by separate redirecting sheaves.

Abstract: An apparatus for manufacturing a three-dimensional netted structure, having a pair of opposing chutes located below the mouthpiece along the width direction of the filament assembly and vertical to the thickness direction of the filament assembly, the chutes being inclined so that the distance between each the chute becomes narrower downward and toward the center of the filament assembly, the cooling water is supplied on the surface of the chutes, the cooling water flowing on the chutes receives the filaments in a surface part of the filament assembly to form loops and make the adjacent continuous filaments contact and be entangled with each other, and a surface layer having a higher apparent density and an inner layer having a lower apparent density located inside the surface layer are formed by the conveyor.

Abstract: A near field electrospinning system includes a spinneret that provides a plurality of fibers and a collector positioned relative to the plurality of spinnerets. The electrospinning system also includes a coagulant flowing along the collector. The coagulant is configured to receive a plurality of fibers from the spinneret(s) and move the plurality of fibers away from the spinneret(s). The electrospinning system also includes a roller configured to collect the plurality of fibers from the coagulant as a substantially untwisted bundle of continuous fibers.

Abstract: The present invention generally relates to a cooling process and system that can be utilized in the manufacture of flexible elongate extruded materials, such as tubing or jacketed electrical wire and cable. More particularly, the present invention relates to a cooling trough for cooling flexible elongate extruded materials after extrusion. Cooling trough embodiments have a base, a wet cooling chamber above the base, and an air dry chamber above the wet cooling chamber. The base contains a reservoir for collecting and storing a cooling liquid. An extruded material, such as a cable, enters the wet cooling chamber, where the cooling liquid from the reservoir is sprayed onto the material, the material is then passed to the air dry chamber where it is dried.

Abstract: The invention relates to a method for the production of granulate grains of polymers from thermoplastic polyesters or copolyesters from a polyester melt using an extrusion granulator. The polyester melt is fed to nozzles of the extrusion granulator and then, with draw-in rollers, to the granulation device via an extraction section as extrusions exiting from the nozzle, wherein, e.g., an extrusion extraction speed is set by the draw-in rollers. The invention also relates to an improved extrusion granulator according to the invention having a wave device between the nozzles and the extraction channel, and granulate grains produced according to the method according to the invention.

Abstract: The invention relates to a method for producing an elongate polysaccharide element, in particular a chitosan thread, comprising an operation of extruding an extrusible solution of said polysaccharide through an extrusion die and an operation of coagulating the extruded solution. The extrusible solution is a hydroalcoholic solution containing an alcohol that does not form an azeotrope with water and which has a boiling point of more than 150° C. at atmospheric pressure. The coagulation operation includes a step of evaporating the water, preferably over the alcohol, producing a gelled extruded elongate element in the form of a mainly alcoholic gel, in particular by subjecting the extruded solution to a hot air flow. At least one operation of eliminating the alcohol contained in said gel makes it possible to obtain the elongate polysaccharide element.

Abstract: An apparatus for manufacturing a three-dimensional netted structure, the three-dimensional netted structure including a plurality of filaments of resin, the filaments being helically and randomly entangled and thermally bonded together, the apparatus including: an extrusion molding machine including a plurality of dies each having a mouthpiece with a plurality of holes; a pair of endless conveyors provided with endless members; a motor adapted to drive the endless members; and a tank adapted to partly submerge the endless conveyors therein. A method of manufacturing a three-dimensional netted structure using the apparatus by extruding molten filaments of a thermoplastic resin downward from the dies via the mouthpiece, helically entangling the molten filaments by entangling actions of the endless members, and cooling the entangled filaments in a liquid in the tank.

Abstract: The invention pertains to a method for manufacturing filaments from an optically anisotropic spinning solution in which the spinning solution is extruded through a spinneret including a spinning field with a plurality of spinning orifices into a coagulation bath through a slot or diaphragm, the edges thereof being formed by plates with upper and lower sides. The upper sides of the plates are defined as the sides having the shortest distance to the spinning field, wherein the line through the center of the spinning field and perpendicular to the upper sides is located a distance (d) from a parallel line through the center of the slot or diaphragm. The projection of the slot or diaphragm has about the same size and shape as the projection of the spinning field. The plane of the upper side of one plate has a shorter distance to the center of the spinning field than the plane of the upper side of the other plate, and the line has a smaller distance to the edge of plate than to edge of plate.

Abstract: An apparatus is configured to produce a spunbonded fabric. In order to achieve an airiness of the spunbonded fabric and ready adaptability to process parameters which are to be changed, a spinning beam together with a blowing apparatus is configured to be pivotable in a pivoting unit. A relatively high airiness is achieved by the filaments running obliquely onto the fabric belt below the spinning beam. Rotary leadthroughs or elastic feed lines to the spinning beam make the slight pivoting possible.

Abstract: The present invention generally relates to a cooling process and system that can be utilized in the manufacture of flexible elongate extruded materials, such as tubing or jacketed electrical wire and cable. More particularly, the present invention relates to a cooling trough for cooling flexible elongate extruded materials after extrusion. Cooling trough embodiments have a base, a wet cooling chamber above the base, and an air dry chamber above the wet cooling chamber. The base contains a reservoir for collecting and storing a cooling liquid. An extruded material, such as a cable, enters the wet cooling chamber, where the cooling liquid from the reservoir is sprayed onto the material, the material is then passed to the air dry chamber where it is dried.

Abstract: There is provided a process of preparing at least one fiber structure comprising: (a) contacting at least one viscous material with at least one non-solvent, the non-solvent having a first flow rate; and (b) allowing formation of the fiber structure in the presence of the non-solvent at a second flow rate, wherein the second flow rate is less than the first flow rate or is about zero. There is provided a process of preparing at least one fiber structure, wherein the fiber structure is a fiber scaffold, comprising: (a) contacting at least one viscous material with at least one non-solvent, the non-solvent having a first flow rate; and (b) obtaining at least one fiber and assembling the obtained fiber(s), or allowing the obtained fiber(s) to be assembled, in the form of a fiber scaffold. There is also provided a fiber structure obtainable by any process according to the invention and an apparatus for preparing a fiber structure.

Abstract: A strand guide assembly, a guiding system, and a method of controlling a flow of molten thermoplastic to form first and second strands moving from an extruder to a finishing apparatus is disclosed. The method comprises the steps of extruding molten thermoplastic to form the strands, routing the strands from the extruder to the finishing apparatus, and cooling the strands. The method comprises the steps of guiding the first strand across one shaped step when guide segments are in a single-step configuration or guiding the first strand across an abutting pair of shaped steps when guide segments are in a dual-step configuration to separate the first and second strands and guiding the second strand across another one of the shaped steps when in the single-step configuration or guiding the second strand across another abutting pair of shaped steps when in the dual-step configuration to separate the first and second strands.

Abstract: Two paper webs saturated with an A-phase phenolic resins and dried to a B-phase are conveyed through separate low melting point metal alloy baths, one web after being corrugated, to convert the resin to a fully cured C-phase, whereafter the webs are joined to form a waterproof single face corrugated web.

Abstract: Disclosed are a wet spinning apparatus and a wet spinning method, which enable to manufacture fibers with excellent quality by controlling the flow of a coagulation liquid in a spinning bath and which enable to cope with high speed spinning (or high speed drawing). A wet spinning apparatus (1) comprises a spinning bath (2), at one end in which there are provided a nozzle (5) for discharging a spinning raw liquid and coagulation liquid discharge ports (4a) and (4b) for discharging a coagulation liquid (C), at the other end in which there are provided a drawing roll (10) for drawing coagulated filaments (13) and a coagulation liquid recovery portion (3) into which the coagulation liquid (C) flows out.

Abstract: An improved process and apparatus for producing a shrinkable plastic film by environment-friendly resin material. The process comprises blow-molding the environment-friendly resin material of OPS, PET or PLA to form a tubular plastic film by a blow-molding machine, and collapsing the tubular plastic film to a flattened plastic film by a roller, then passing through the first forcibly cooling device, the plastic film being transferred to the second heating device which is filled with heating water, and the third auxiliary heating device on the top of a transfer roller serving to heat the soften plastic film further, then the reheated plastic film being transferred to the fourth rapid-cooling device and the tube is cooled rapidly, then the tubular plastic film with improved toughness is achieved. The said auxiliary heating device with a wall around it is positioned on the top of the transfer roller, and the wall separates the water into two parts.

Abstract: A process for preparing a PANOX fiber comprising: obtaining an acrylonitrile copolymer, wherein the copolymer contains at least about 2% by weight itaconic acid comonomer; forming a spin dope from the copolymer; wet spinning the spin dope to obtain gelled filaments; contacting the gelled filaments with ammonia activator in an aqueous imbibation bath; bundling the gelled filaments to obtain a fiber; removing solvent from the fiber; drawing the fiber; densifying the fiber by heating the fiber up to about 400 degrees C. for a time of about 15 minutes in a rapid densification zone; and withdrawing a PANOX fiber from the densification zone.

Abstract: A spinning pack for dry-wet spinning is provided with a spinneret having not less than 6,000 spinning holes and having an aspect ratio Ra of not less than 2.5 for a spinning hole array of the spinning holes. In a device and method for producing a fiber bundle, a drawing angle of single fibers formed by the single fibers and a spinneret surface of a spinneret is in a range from 87° to 92°, the single fibers being fibers discharged from the outermost spinning holes located in the long side direction of the spinneret and running to a fiber bundle diverting guide provided in a coagulation bath.

Abstract: An apparatus for producing a tubular tissue scaffold having aligned biopolymer fibrils including a biopolymer gel dispersion feed pump that is operably connected to a tube-forming device having an exit port, where the tube-forming device is capable of producing a tube from the gel dispersion while providing an angular shear force across the wall of the tube, and a liquid bath located to receive the tubular tissue scaffold from the tube-forming device.

Abstract: A method of producing an elastomeric optical conductor fiber composed of plastic includes drawing a fiber composed of a high-viscosity liquid reactive starting material. The starting material is added by way of a nozzle to a reaction apparatus, to which a liquid, which is inert towards the starting material, has been charged. At least partial crosslinking of the starting material takes place in the reaction apparatus. The elastomeric plastic of the optical conductor fiber is in particular a three-dimensionally crosslinked polyurethane.

Abstract: The invention relates to a method and a device (1) for bonding wafers (6, 9). Here at least one wafer surface is first wetted with a molecular dipolar compound, whereupon the wafers are brought into contact with each other. The bonding of the wafers then takes place by means of microwave irradiation.

Abstract: Device for extruding hollow strands from thermoplastic material, with an extruder head, having a mandrel, and a calibrating device, for making a dimensional change while production is in progress, and with a radially adjustable inlet, at least one Ranque vortex chamber being formed in the mandrel, the cooling air outlet of which chamber leads into a cooling tube, which extends as an axial extension of the mandrel through the inlet of the calibrating device and has a cooling air outlet opening out into the calibrating device. This device achieves the object of providing a device with which effective interior cooling is achieved in calibrating devices designed for making a dimensional change while operation is in progress.

Abstract: Surface field electron emitters using a carbon nanotube yarn and a method of fabricating the same are disclosed. To fabricate the carbon nanotube yarn for use in fabrication of simple and efficient carbon nanotube field electron emitters, the method performs densification of the carbon nanotube yarn during rotation of a plying unit and heat treatment of the carbon nanotube yarn that has passed through the plying unit without using organic or inorganic binders or polymer pastes. The method fabricates the carbon nanotube yarn with excellent homogeneity and reproducibility through a simple process. The carbon nanotube yarn-based surface field electron emitters can be applied to various light emitting devices.

Abstract: A machine for manufacturing a nonwoven fabric includes a conveyer net, a spunbonding apparatus, and a container. In use, the spunbonding apparatus can project at least one fiber onto the conveyer net. The container can contain liquid, wherein the liquid level of the container is higher than at least a part of the conveyer net which the fiber is projected onto.

Abstract: An apparatus includes a spinning nozzle, a fiber drawing device and a water spray device. The spinning nozzle has spinnerets and a spinning solution is filled therein. The spinning solution includes a solvent and a fiber material. The solvent includes N-Methylmorpholine N-Oxide, and the fiber material includes cellulose. The fiber drawing device is disposed under the spinning nozzle and has a gas flow generating device therein for generating a gas flow which is ejected from the top of the fiber drawing device and toward the bottom thereof. The fiber drawing device also has a slit on the top thereof, and the spinning solution from the spinning nozzle would enter the fiber drawing device through the slit. The water spray device is disposed at the slit of the fiber drawing device, and the spinning solution would pass through the water spray device before entering the fiber drawing device.

Abstract: A device is suggested for calibrating an extruded plastic profile (1) having a shaping extrusion die (3) and having a framework (6) which is displaceable in the longitudinal direction of the plastic profile (1) in relation to the extrusion die (3), which has a cooling tank (5) and, between the cooling tank (5) and the extrusion die (3), a dry calibration apparatus (4) which is replaceably attached to a carrier (12) and is connectable on one hand to supply lines for a coolant liquid feed and removal and on the other hand to a partial vacuum. To obtain advantageous mounting conditions, it is suggested that the carrier (12), which is adjustable in relation to the cooling tank (5) in the longitudinal direction of the plastic profile (1), form a distributor, connected to the supply lines (16, 17), having line transitions (25) for the coolant liquid and the partial vacuum in the placement area of the dry calibration apparatus (4), which is provided with corresponding line transitions.

Abstract: The invention relates to a calibrating plate for an extrusion die for producing plastic profiles, comprising a substantially plate-shaped basic body (21), in which an opening (22) for guiding and calibrating the plastic profile (23) to be produced is provided, with at least one insert part (1) made of a material with high hardness being inserted into the basic body (21), which insert part comprises at least one holding section (2) and a shaping section (3), with both the holding section (2) as well as the shaping section (3) being formed partly as cylindrical surfaces with generatrices parallel to the extrusion axis (6), and with the insert part (1) being held in the axial direction in the plate-shaped basic body (21) by a delimiting stop (5).

Abstract: A method and apparatus for producing a plurality of bi-oriented, heat-shrinkable thermoplastic tubular films is disclosed. Thermoplastic resin is extruded through a plurality of annular dies to form a plurality of molten plastic tubes. The tubes are cooled and solidified and sent through a plurality of pinch rollers to stretch the tubes simultaneously in a machine and transverse direction, creating a plurality of tubular films. The films are cooled and heated, and then relaxed simultaneously in a machine and transverse direction. Winding rollers then wind up the finished tubular films.

Abstract: The invention relates to a system for producing endless molded bodies from a molding compound. For producing the endless molded bodies, spinning means are used comprising an extrusion head through which the molding compound is extruded to form endless molded bodies, a precipitating bath containing a precipitant, and an air gap between the extrusion head and the precipitating bath. After extrusion, the endless molded bodies are first passed through the air gap, and then through the precipitating bath. For facilitating control of the system, it is provided in accordance with the invention that the system comprises a control area arranged in front of the spinning means and accessible by the operating staff, and that the air gap is arranged freely visibly in a height freely defined by a central vision range of an operator standing upright in the staying area and looking substantially in a horizontal direction.

Abstract: A three-dimensional netted structure having an upper surface, a lower surface, two side surfaces a left end surface, and a right end surface, including at least a plurality of filaments helically and randomly entangled and thermally bonded together, wherein the filaments are formed out of a thermoplastic resin by extrusion molding followed by cooling with a liquid; and the netted structure is four-surface molded, the upper surface, the lower surface and the two side surfaces being molded. An apparatus and a method for manufacturing the three-dimensional netted structure.

Abstract: An apparatus for the manufacture of extruded material. The apparatus includes a material supplier which supplies a material and has an opening, through which the material is extruded to form extruded material. A moving surface is positioned adjacent to the opening to receive the extruded material from the opening. The method for the extrusion of the material which comprises providing the material in a liquid form, extruding the material through an opening to form extruded material and receiving the extruded material on the moving surface.

Abstract: A process for preparing low moisture content polymer biomaterial composites and expandable polymer biomaterial composites by extrusion through a die plate (18) into a waterbox (16) and pelletizing with cutter blades (14). Polyolefins or condensation polymers are melt blended with a solid or semi-solid biomaterial component (155), such as polysaccharides, including cellulosics and starches, or proteinaceous materials, including polypeptides, and are extruded, pelletized underwater, and processed with accelerated drying to achieve moisture levels as low as one percent (1%) or less.

Abstract: First, second and third dopes (114, 115 and 116) containing a solid electrolyte are co-cast from a casting die (89) onto a running belt (82). The casting die (89) is provided with a feed block (119). A catalyst that promotes a redox reaction of electrodes in a fuel cell is added to the first dope (114) and the third dope (116). A casting membrane (112) having a three-layer structure is peeled from the belt (82) as a three-layered membrane (62) and sent to a tenter drier (64). In the tenter drier (64), the membrane (62) is dried in a state that both side edges thereof are held by clips, while stretched so as to have a predetermined width. The membrane (62) is then sent to a drying chamber (69) and the drying thereof is proceeded while supported by rollers.

Abstract: A device for preparing a flat profiled element from an elastomeric thermoplastic gel includes: an extruder with at least one feed and a discharge; an extruder die having section configured to be suitable for a profile of the flat profiled element; a liquid cooling bath with a free surface for receiving and cooling the flat profiled element as the flat profiled element is discharged from the extruder die; and a flat moving support for receiving the flat profiled element. The free surface of the liquid cooling bath is arranged in an immediate vicinity of an outlet of the extruder die. Additionally, an angle of inclination of a plane of the extruder die to a horizontal plane is between 20 and 70 degrees.

Abstract: A casting film is formed by releasing a casting dope onto a moving circumferential surface. The casting film is cooled to obtain self supporting property. A peel roller peels the casting film as a primary wet film and sends the primary wet film to a transfer section. Through the transfer section and the like, the primary wet film is guided to a first drying chamber where a wet gas containing water vapor is blown onto the primary wet film. Water molecules are absorbed in the primary wet film. Absorption of the water molecules in the primary wet film promotes diffusion of the constituent compounds contained in the primary wet film, which facilitates release of constituent compounds.

Abstract: A method and apparatus for regulating the vacuum supply to calibration tools which include at least one dry calibration tool and at least one calibration bath, wherein at least one vacuum pump is brought into contact with a calibration tool in order to extract air from the calibration tool, the pressure in the tool being regulated to a target value by means of a control valve. Several vacuum pumps extract air from a common pressurized container, and the air is extracted from at least one dry calibration tool by a first control valve in the common pressurized container and in addition the air is extracted from at least one calibration bath by a second control valve in the common pressurized container.

Abstract: The invention is a process and apparatus for producing a cross-linked, tubular film or “tape” that uses a motor driven nip roll assembly and a product driven idler roll to pump gases contained within the film in a desired direction. The process eliminates the need to create slits to vent gases that are trapped within the film. The motor driven roll comprises a driven nip roll and a driven peristaltic roll that cooperate to drive the film forward and nip the film. The driven peristaltic roll includes a pumping section that comprises a plurality of pumping rollers that pump gases contained within the film in a direction that is the reverse direction of film travel. The product driven roll comprises a spool roller and a plurality of pumping rollers that are circumferentially spaced around the spool roller. The pumping rollers trap and pump gases contained in the film in the reverse direction of film travel.

Abstract: The invention concerns a cooling and molding water tank for a plastic complicated profile. A plurality of molding blocks and water collection plates are provided along the length inside the tank, and they are spaced each other. The advantage of this invention is that: the cooling water flows alternately in cycle or periphery-inner-periphery. It makes the complicated profile cool homogeneously and efficiently upon the high speed extrusion pulling and provides the profile with good molding effect and quality.

Abstract: A dope is cast from a discharge opening of a casting die onto a casting drum. A casting bead is the dope between the discharge opening and the casting drum. A nozzle and a guide path are provided downstream from the discharge opening with respect to a moving direction (direction X) of the casting drum. The guide path is formed on a tapered surface of the casting die. The nozzle supplies an anticoagulant to the guide path. The anticoagulant is guided to a bottom end of the guide path. Upon reaching the bottom end, the anticoagulant forms a pool in the close vicinity of an end E of the discharge opening. The anticoagulant is securely supplied to a side edge portion of the casting bead through the pool.

Abstract: An apparatus for making electrspun fibers comprises a collector that may be submerged in a coagulation bath. The collector may be automatically movable between a first position and a second position, wherein at least a portion of the collected fibers are submerged in a coagulation bath in the first position and spaced apart from the coagulation bath in the second position. The collector may be a rotating collector. A process for making electrospun fibers comprises electrospinning a dispersion and collecting a plurality of electrospun fibers, followed by submerging the collected fibers in a coagulation bath.

Abstract: An apparatus and method for molding balloon catheters is disclosed. The balloon may be molded by providing a polymeric tube within a mold having an interior cavity in the shape of the desired balloon. Microwave energy, which may be generated by a gyrotron, may then be directed toward the mold, to heat the polymeric material without heating the mold. Once heated, pressurized fluid may be injected into the tube to blow the polymeric material against the interior cavity whereupon the material can cool to form the balloon or can be further heatset by additional microwave energy and be cooled to form the balloon. In accordance with one embodiment, microwave energy can also be used without a mold to form a medical device. A polymer extrusion apparatus is disclosed utilizing a microwave energy for heating polymer feedstock material within the extruder tip and die unit just prior to formation of the extrudate product.

Abstract: According to this method, the products are produced by continuously co-extruding a bead (B) coated with a starting base comprising hydrocolloids so as to form a skin by calcium gelation when the sausage passes into the elongated gelation bath (2), said bead then being shared out into portions (P) placed in trays (C) Many beads (B) are co-extruded by parallel co-extrusion heads, (1) transit into a common gelation bath (2), are brought side by side so as to then be placed into portions by given means (3) acting on all said beads (B) so as to form batches of identical products perfectly grouped and aligned so as to be loaded into their packaging tray (C).

Abstract: A calibration basket is configured for a calibration station disposed in an apparatus for producing plastic tubes. The calibration basket contains calibration tools that are successively disposed at a distance from each other across the circumference of the tube. The calibration tools are embodied as calibration strips that extend in the longitudinal direction of the tube that is to be calibrated, are disposed so as to be adjustable on displacement spindles, and are provided with one respective sliding surface that enters in contact with the tube. Recesses that are connected to discharge ports are embodied in a sliding surface and are provided within the calibration strip. The discharge ports extend in a direction of the longitudinal axis of the calibration strip.