Abstract: An injection molding apparatus with hot runners includes a rear plate that supports at least one manifold, wherein a first face of the rear plate that contains the main manifold is in direct contact with a first face of the manifold plate substantially on the entire flat surface of the first face of the manifold plate which is not affected by the recesses which, in the manifold plate, accommodate the secondary manifolds. The manifold plate has nozzles, and the actuators of the injection nozzles are completely external to the rear plate, are completely inside recesses of the manifold plate, and are arranged so that a respective piston cylinder is compressed between the first face of the rear plate and the secondary manifold.

Abstract: An injection molding apparatus with hot runners includes a rear plate that supports at least one manifold, wherein a first face of the rear plate that contains the main manifold is in direct contact with a first face of the manifold plate substantially on the entire flat surface of the first face of the manifold plate which is not affected by the recesses which, in the manifold plate, accommodate the secondary manifolds. The manifold plate has nozzles, and the actuators of the injection nozzles are completely external to the rear plate, are completely inside recesses of the manifold plate, and are arranged so that a respective piston cylinder is compressed between the first face of the rear plate and the secondary manifold.

Abstract: A nozzle is configured for receiving and dispensing a 3D printer filament. The nozzle includes a barrel, a heating element, and an end tip. The barrel has an internal bore and an exterior surface. The internal bore has a filament receiving end and a filament discharge end. A heat break is defined in the exterior surface of the barrel. The heating element is proximate the filament discharge end. The heating element includes a heating wire wrapped around the exterior surface of the barrel. The end tip is proximate the filament discharge end. The 3D filament is received in the filament receiving end heated by the heating element and dispensed through end tip proximate the filament discharge end.

Abstract: Embodiments of the innovation relate to a seal plug which includes a plug body having a first sealing portion and a second sealing portion, an o-ring disposed about an outer periphery of the first sealing portion, and a set of threads disposed about an outer periphery of the second sealing portion. The second sealing portion defines a tool engagement portion.

Abstract: The invention relates to nozzle tips including a nozzle body and a tip portion, configured to minimize the accumulation of a resin on the nozzle tip as it is dispensed through the nozzle tip. The nozzle tip can contain a central flow channel and an internal portion that branches and guides the resin into multiple exiting flow channels that define tangential pathways to the outer surface of the nozzle tip. The nozzle tip can include grooves that define extended, sharply angled flow paths for the resin. Nozzle tips can have a neck portion separating a nozzle body and a tip end of the nozzle tip; here, a doughnut-shaped space located around the neck portion can be defined by the base of the nozzle, the crown of the nozzle, and the neck portion, for encouraging turbulent flow of the resin to scour the nozzle tip during dispensing.

Abstract: A resin shaping mold includes a hot runner, a cavity, a cold runner, and a valve pin. The cold runner is connected to the hot runner and the cavity. The cold runner has a lower temperature than the hot runner. The valve pin configured to move forward and backward from the hot runner toward the cold runner and close a channel of molten resin from the hot runner to the cavity at a predetermined position. The valve pin includes a runner lock portion configured to hold resin solidified at a position further on the cavity side with respect to the predetermined position in the cold runner.

Abstract: An injection molding apparatus includes an injection-molding mold including a fixed mold and a movable mold, the fixed mold having a gate opening into which a molding material flows, the movable mold having a cavity and being configured to be separated from the fixed mold during mold opening; a hot runner including a nozzle having a channel that guides the molding material to the gate opening, and a heater, the hot runner being disposed in the fixed mold; and a control unit that controls a temperature of the heater to adjust a temperature of the hot runner. The control unit controls the temperature of the heater to a first temperature when the molding material is injected from the hot runner to the cavity, and after the injection of the molding material is completed, controls the temperature of the heater to a second temperature that is higher than the first temperature.

Abstract: The disclosed embodiments include a system, apparatus and method for forming an ophthalmic lens having reduced risk of optical defects. An illustrative injection molding system includes a heated sprue and a hot runner fluidly coupled to the heated sprue. The system also includes a mold fluidly coupled to the heated runner to receive a molten material. The mold includes a material conduit, which may be included in an interchangeable gate insert, and a lens cavity. The hot runner forms a material conduit having an inlet for receiving material from the hot runner and an outlet for delivering material to the lens cavity. The material conduit also includes a branch cavity disposed between the inlet and the outlet for receiving a diverted volume of degraded lens material.

Abstract: The present invention relates to a method for manufacturing a pressurizable cylindrical vessel for use in a pressure control system for maintaining a constant predetermined pressure in a fluid container configured to dispense when in use a fluid contained in said fluid container at said constant predetermined pressure, characterized in that the manufacturing is by injection moulding. The invention also relates to a method for assembling a pressurizable fluid container configured to dispense when in use a fluid contained in said container at a constant predetermined pressure. In addition, the invention relates to a pressurizable cylindrical vessel, a pressurizable unit, a pressure control system, a bottom plate and a dispenser; as well as their methods of manufacturing. In a final aspect the invention relates to uses of said parts in a bag-on-valve type packaging or metal can type packaging.

Abstract: Provided is a nozzle system for dispensing a dispense chemical onto a substrate, the system comprising: a nozzle comprising a nozzle body and a nozzle tip; a shielding device coupled to the nozzle tip, the shielding device configured to create a mini-environment for a dispense chemical such that a partial pressure of the dispense chemical is maintained in the shielding device; wherein the nozzle system is configured to meet selected dispense objectives.

Abstract: A feed device for a metal melt in an injection molding device of, for example, a metal-molding machine has a reservoir for the metal melt and a feed duct, in which the metal melt can be fed to a mold cavity. The feed duct includes a cylinder bore, in which a piston is arranged axially displaceably. A collection chamber for the metal melt, from which the metal melt can be introduced into the mold cavity through a continuing line as a consequence of an axial displacement of the piston, is provided in the cylinder bore. The cylinder bore is surrounded by a first heater, which has at least one heating element.

Abstract: A nozzle terminal for injectors of plastic material injection molding apparatus, includes an inner tubular body or tip and a ring nut. The tip includes a radially inner element made of a first material and a radially outer element made of a second material arranged at contact with the radially inner element at an intermediate portion thereof terminating at a distance from the distal end thereof. The ring nut fully covers the radially outer element, insulating it from the environment.

Abstract: A method of forming a layered heater assembly includes: forming a plurality of layers onto a substrate, the plurality of layers including a resistive element layer; forming electrical terminations in contact with the resistive element layer; securing a protective cover over the layers using a laser welding process, wherein edges of the protective cover are welded circumferentially around raised end portions of the substrate and welded longitudinally along a slotted portion of the substrate; securing a pair of lead wires to the electrical terminations; and securing a lead cap assembly around the pair of lead wires and to the protective cover using a laser welding process.

Abstract: Disclosed is a scanner for scanning fire tubes in heater treaters. A scanner may include a curved body. The curved body having an outside of a curve and an inside of a curve. At least one magnet is coupled to the outside of the curve of the curved body. At least one sensor is coupled adjacent the at least one magnet on the outside of the curve of the curved body. A data transmitter is coupled to the at least one sensor. At least one wheel is coupled to an edge of the curved body. A distance measurer is coupled to the curved body. A hook coupler is coupled to the curved body. A method of using the scanner for scanning a fire tube includes placing the scanner in the tube and pushing/pulling the scanner up and down the tube around the entire circumference of the tube.

Abstract: A nozzle retention arrangement is provided for an injection molding manifold system, such as a hot runner manifold system. The nozzle retention arrangement couples an injection nozzle to a distribution manifold in a manner that locates the nozzle in its final operating position and applies an initial assembly load to retain the nozzle in position on the manifold to facilitate installation of a manifold system into a manifold plate. The nozzle retention arrangement may provide a compliant load application feature to limit sealing surface pressure between the nozzle and the manifold to prevent surface damage between the components, while also accommodating thermal expansion of the heated components during operation of the system. The nozzle retention arrangement may also provide a load control feature to prevent the machining quality of the nozzle bore in the manifold plate from determining the sealing load between the nozzle and the manifold.

Abstract: When a heating device is formed which includes at least one or more heaters 4n, 4a, 4b, 4c and 4d that are provided on the outer circumferential surfaces 2f and 3f of at least one of a heating cylinder 2 and an injection nozzle 3 to heat at least one of the heating cylinder 2 and the injection nozzle 3, at least some heaters 4a, 4b, 4c, . . . of all the heaters 4n, 4a, . . . are formed with air cooling-capable heaters 4as, 4bs and 4cs in which a panel member 5 formed of a material R having thermal conductivity is interposed between the heaters 4a, 4b, 4c, . . . and the outer circumferential surfaces 2f and 3f of at least one of the heating cylinder 2 and the injection nozzle 3, in which an air path 6 for air cooling is formed in the panel member 5 and in which an air outlet and inlet portion 8 allowing air A to be passed from an air supply portion 7 is provided in the air path 6.

Abstract: An injection molding apparatus comprising a clamp plate, a heated manifold, an actuator, a mold and a cooling device, wherein the cooling device comprises: a heat transmitter comprising a distal arm or member and a proximal base or member, the distal arm or member being mounted by a spring loadable interconnection or engagement to or with the proximal base or member, the clamp plate, the mold, the manifold, the actuator and the heat transmitter being assemblable together in an arrangement wherein the spring loadable interconnection is loaded urging the distal end surface of the distal arm or member into compressed engagement with the clamp plate.

Abstract: An injection molding apparatus comprising a clamp plate, a heated manifold, an actuator, a mold and a cooling device, wherein the cooling device comprises: a heat transmitter comprising a distal arm or member and a proximal base or member, the distal arm or member being mounted by a spring loadable interconnection or engagement to or with the proximal base or member, the clamp plate, the mold, the manifold, the actuator and the heat transmitter being assemblable together in an arrangement wherein the spring loadable interconnection is loaded urging the distal end surface of the distal arm or member into compressed engagement with the clamp plate.

Abstract: An injection molding apparatus for manufacturing hollow objects, such as plastic e.g. multi-layered preforms, comprising an injection mold (1) with a front (2) and a rear side (3), which is composed of a clamp plate (4) on the front side (2), and a hot runner plate (5), where a manifold (6) is mounted in the hot runner plate, between which a set of injection nozzles (7) is arranged, which are each provided with a central supply duct (8), at the free end (9) whereof an injection gate (10) is provided. Said apparatus is remarkable in that said injection gate (10) is closable by means of a locking rod (11), which is movable herein to and fro through a profiled inner part (12) which is received in a holder (13) around which a heating element (14) is provided into which a primary channel (15) opens for supplying the plastic base material to the injection gate (10).

Abstract: The present disclosure provides an injection molding apparatus and a method of fabricating a component. The apparatus may include a barrel comprising a first section having an end associated with a mold through a nozzle or a gate insert, a second section coupled to a hopper configured to fill a material into the barrel, and a temperature transition section between the first section and second section. The apparatus may include an extrusion screw placed inside the barrel and rotatable relative to the barrel. The apparatus may include one or more heaters associated with the first section of the barrel to heat the material inside the barrel. Rotation of the extrusion screw relative to the barrel may continuously extrude the material into the mold.

Abstract: An injection system, in an apparatus for injection-molding plastics, comprises a manifold plate (2) having an injection nozzle (3) closed by a valve stem (7) commanded by a dual-effect pneumatic linear actuator (8, 9) wherein a piston cylinder (8) is compressed between a back plate (10) and a hot runner manifold (5). The piston cylinder bounds an annular gap into which the compressed air that drives the actuator can flow.

Abstract: An injection molding apparatus comprising a heated manifold, an actuator comprised of an actuator housing containing a drive member interconnected to a valve pin having a drive axis, one or more heat convectors each heat convector comprised of a heat conductive leg disposed within a gap disposed between the manifold and a downstream end of the actuator housing and a heat conductive arm extending distally upstream and away from the gap such that heat is conducted from the leg to the arm upstream and away from the downstream end of the actuator housing.

Abstract: A mold-tool assembly, comprising: a heater being configured to heat (in use), at least a portion of a component, the heater having a resistive element being encased, at least in part, in aluminum nitride.

Abstract: A manifold, in a first pocket, defines a manifold orifice to supply material to a nozzle in a second pocket. A support ring in the second pocket maintains the nozzle stationary within the second pocket. A bushing extends between the pockets, fixedly attached to the manifold and laterally movable with respect to the pockets and the nozzle. At ambient temperature, the centers of the nozzle and manifold orifices are laterally offset from one another, a preload is defined between the nozzle and the bushing, another preload is defined between the manifold and the nozzle, and a gap is defined between the support ring and the pocket. In operation, when the various components thermally expand, the manifold moves laterally within the first pocket, and the nozzle remains substantially stationary within the second pocket, such that the centers of the nozzle and manifold orifices are laterally aligned, and the gap is closed.

Abstract: A system for the injection molding of plastic material is described. The system has an injection device of the hot runner type for the injection of a plastic material, in a molten state, into a mold, a circular diaphragm to distribute evenly and circularly in a cavity of the mold, through a circular injection gate or port, the plastic material injected by the injection device, and control means adapted to control an operation of the molding system an including a heating inductor and heating means provided to heat and keep at a hot temperature the injection device, and a thermocouple being arranged in an area of the circular injection gate. The control means are adapted to control through the heating inductor a molding cycle of a piece.

Abstract: A manifold, in a first pocket, defines a manifold orifice to supply material to a nozzle in a second pocket. A support ring in the second pocket maintains the nozzle stationary within the second pocket. A bushing extends between the pockets, fixedly attached to the manifold and laterally movable with respect to the pockets and the nozzle. At ambient temperature, the centers of the nozzle and manifold orifices are laterally offset from one another, a preload is defined between the nozzle and the bushing, another preload is defined between the manifold and the nozzle, and a gap is defined between the support ring and the pocket. In operation, when the various components thermally expand, the manifold moves laterally within the first pocket, and the nozzle remains substantially stationary within the second pocket, such that the centers of the nozzle and manifold orifices are laterally aligned, and the gap is closed.

Abstract: An electrical sleeve heater for heating an elongated part has a metallic and tubular casing extending coaxially along an axis with the part and surrounding the part. The casing has a front end is with a radially inwardly open cutout. A electrical heating element set in the casing is energizeable to heat the casing and the part surrounded by the casing. A thermocouple has a sensing tip in the cutout. A retaining body of at most low thermal conductivity is fitted in the cutout, holds the tip out of contact with the metallic casing, and urges the tip radially inward into direct engagement with an outer surface of the part. The retaining body is a molded part, a plate, or a spring of a material with low or negligible thermal conductivity.

Abstract: Methods of joining members, forming molded portions with members, securing inserts with members, and joined members, such as for a frame or a frame for a fenestration unit, formed thereby, are disclosed. One embodiment of the method includes placing a first member with a first cavity in a joining position, placing a second member proximate the first cavity of the first member in the joining position, injecting a resin into the first cavity, allowing the resin to solidify at least partially to join the first member and second member to form a joined member, and removing the joined member from the joining position. Optionally, the joined member can be formed in a fixture, can include molded portions formed by the resin, and/or can include inserts held in place by the resin. Further, members without cavities can form a cavity that can receive the resin.

Abstract: The present disclosure includes a nozzle for injecting thermoplastic material in fluid state including two portions sliding in a sealed fashion, the first portion including a nozzle body which, in a longitudinal injection direction, has a longitudinal channel through which the thermoplastic material passes, the second portion including a linking ring having a passage in which the nozzle body is able to slide in sealed manner, and a resilient load member cooperating with the two portions to urge the nozzle body in the forward longitudinal direction and the linking ring in the backward longitudinal direction.

Abstract: An interface device between an injection tube and a mold provided with an injection hole, wherein the interface device includes a terminal element for an injection tube, with an end piece inserted into one end of the tube and a sealing ring that slides onto the tube, and a mechanism for holding and clamping the terminal element. The mechanism which is to be screwed into a mounting that is rigidly connected to the mold and is arranged around the injection hole, forms a seal between an injection end of the end piece and a sealing surface of the mold at the injection hole. The dismantlable assembly includes a screw-on socket that has a supporting surface for the sealing ring.

Abstract: Hot-runner system (100) for use with molding system. Hot-runner system (100) having: heater (102) to generate heat responsive to receiving power. Heat-sourcing component (104) to receive heat from the heater (102) so that the heat that is generated by the heater (102) is transferred, at least in part, from heater (102) to heat-sourcing component (104). Heat-sourcing component (104) becomes heated to an operating temperature. Heat-receiving component (106) being at least partially spaced from the heat-sourcing component (104). The operating temperature of the heat-receiving component (106) being cooler than operating temperature of the heat-sourcing component (104). Non-structurally supportive heat insulator (108) has thermal conductivity being lower than thermal conductivity of air during operation of the hot-runner system (100).

Abstract: A hot-runner system having a manifold and a nozzle, wherein the manifold or nozzle or both may be multi-material apparatuses of unitary construction. The nozzle may be thermally graded for temperature transmission between a heating sleeve and the melt. The nozzle may also include a melt flow channel apparatus that alters the flow of the melt before entering the mold. The nozzle and manifold may have a unitary construction that reduces fitting problems between the two apparatuses.

Abstract: A valve pin actuator for an injection molding system includes a housing defining a chamber, the chamber having a nozzle opening portion and a nozzle closing portion. A piston is axially slideable within the chamber between a nozzle open position and a nozzle close position. The piston secures a valve pin to translate axial movements of the piston into axial movements of the pin. The nozzle opening portion of the chamber is configured to receive a first fluid to pressurize the nozzle opening portion to urge the piston towards the nozzle open position. The nozzle closing portion of the chamber is configured to receive a second fluid to pressurize the nozzle closing portion to urge the piston towards the nozzle close position. A fluid passage defined by the piston allows fluid communication between the nozzle opening portion and the nozzle closing portion.

Abstract: A hot-runner system for use with an injection molding system, the hot-runner system including a hot-runner component, a material; and carbon nanotubes being combined with the material. The carbon nanotubes are dispersed, at least in part, in the material and the material includes a metal alloy. The carbon nanotubes are dispersed in the metal alloy, so that the metal alloy and the carbon nanotubes are combined to form a CNT-metal composite material.

Abstract: The invention relates, in first instance, to a plastics injection moulding tool having a hot runner nozzle (1), the hot runner nozzle having an externally or internally heatable nozzle body and a nozzle tip (3), wherein a cooling action, associated with the nozzle tip, can be carried out. In order to provide a plastics injection moulding tool and a method for plastics injection moulding using a hot runner nozzle, in which effective cooling is possible at least at the end of the injection moulding cycle, it is proposed that a cooling device (10) is provided in a region of the nozzle body, directly at or near the nozzle tip. The invention further relates to a method for carrying out a plastics injection process using a hot runner nozzle.

Abstract: Apparatus for heating a fluid being injected in an injection molding system, the apparatus comprising a mold having a cavity, a fluid flow distribution manifold, a fluid flow channel body, a coiled heater tube comprised of a thermally conductive wall, a heater device disposed within the coiled tube; the coiled tube having an upstream, downstream and intermediate coiled portions, the upstream and downstream coiled portions of the coiled tube being selectively movable away from each other along the coil axis to cause the intermediate coiled portion of the coiled tube to stretch or extend in coil axial length.

Abstract: An injection molding comprises: a fixed mold; a movable mold which is capable of contacting to and separating from the fixed mold; and an injection unit which supplies molten resin to a space formed between the fixed mold and the movable mold when being pressed to a non-molding face of the fixed mold. The injection unit comprises: a nozzle portion which injects molten resin to the space formed between the molds; an injecting portion which applies molten resin pressure toward the space formed between the fixed mold and the movable mold though the nozzle portion; a heater and a temperature sensor provided on the nozzle portion; and a heater and a temperature sensor provided on the injecting portion, and detection accuracy of the sensor of the nozzle portion is higher than that of the injecting potion. There is thus provided an injection molding machine capable of manufacturing optics with high accuracy without considerable cost-up by realizing stable and highly accurate injection.

Abstract: A hot runner nozzle for lateral injection of plastic components. The nozzle includes a multi-part nozzle body including at least one tip element which protrudes outwardly over a circumferential area of the nozzle body. The multi-part nozzle body further includes a nozzle body clamping disk section and a nozzle body base section having an axial side that has at least one recess arranged on the axial side to accommodate the at least one tip element.

Abstract: A heating element for metallic plastic injection nozzles with a tubular hollow metal body (2), which surrounds the nozzle body of an injection molding device in a heat-transmitting manner. The hollow body has an outer and/or inner jacket surface with one or more grooves (3, 4), extending in a thread-like manner at least in some sections, with inserted tubular heating body structure (with a heating body or bodies) (5). The heating body structure has electric terminals (6, 7) projecting away from the hollow body (2). In addition, a thermocouple, with a sensor tip (9) is in thermal contact with the material wall (15) of the plastic injection nozzle (17) in an end area of the tube wall, is arranged in a guide groove (4).

Abstract: An injection molding nozzle for dispensing of molten material includes an elongated body member having an outer surface, a first portion at a proximal end, a second portion at a distal end, and a central passageway extending longitudinally therethrough from the first portion to the second portion. The central passageway includes an inlet defined at the proximal end and splits outwardly at the second portion to form a radially extending passageway leading to an outlet. A tip member is coupled to the outlet to facilitate dispensing of molten material into a mold cavity. A groove is defined on the outer surface of the body member that winds from the first portion to a heated section of the second portion that is positioned adjacent to the tip member.

Abstract: A molding apparatus is configured with article molding regions that receive a direct flow of a molding material feed such that external flow channels are not needed. The article molding regions are formed into front sides of opposed “A” and “B” surface mold tools that, when moved into a mating relationship with one another, form closed molding cavities within which molded articles are generated from molding material feed. The article molding regions each generally have a body bounded by a perimeter that establishes an outer edge for an article molded in the one of the closed molding cavities. With at least the “A” surface mold tool, a port is coupled with the body of each article molding region to establish a direct pathway is through which the molding material feed flows to enter the article molding regions, and thus the closed molding cavity, without having to flow along the tool front sides outside of the article molding regions.

Abstract: A nozzle body defines an upstream channel. A downstream bracing portion has a lateral bore. A nozzle tip extends laterally through the lateral bore of the bracing portion and has a sealing surface for engaging a gate component that defines a mold gate. The runnerless nozzle further includes a securing component inserted into the bracing portion to hold the nozzle tip against the bracing portion. The bracing portion or the securing component defines a lateral channel in communication with the upstream channel for delivering molding material to the nozzle tip. The nozzle tip can be removed by removing the securing component.

Abstract: A nozzle body defines an upstream channel. A downstream bracing portion has a lateral bore. A nozzle tip extends laterally through the lateral bore of the bracing portion and has a sealing surface for engaging a gate component that defines a mold gate. The runnerless nozzle further includes a securing component inserted into the bracing portion to hold the nozzle tip against the bracing portion. The bracing portion or the securing component defines a lateral channel in communication with the upstream channel for delivering molding material to the nozzle tip. The nozzle tip can be removed by removing the securing component.

Abstract: A magnetic coupling for an injection molding apparatus, such as a hot half or hot runner, includes a first magnetic part for connection to an actuator, a valve pin plate, or the like and a movable second magnetic part for connection to a valve pin. The first magnetic part and the second magnetic part are coupled by a magnetic force. The first magnetic part can be part of the actuator. The second magnetic part can be part of the valve pin. A valve pin plate can be provided for a plurality of valve pins.

Abstract: A connection system (36) implementing an electric junction between a heater (22), in particular a heater (22) for a hot runner nozzle (10) and at least one hookup conductor (32) linked to a power source, comprises a hookup body (38, 60, 70) which is made of an electrically non-conducting material and which is fitted with at least one passage (46) to receive at least one hookup conductor (32). Said passage (46) is specified to end in a side face (40) of the hookup body (38, 609, 70). Also the hookup conductor (38, 60, 70) is affixable to and/or on the substrate in a manner that in the specified state, the hookup conductors (32) passing through the minimum of one passage (46) shall make contact by their free ends with the heater (22).

Abstract: A hot runner system for an injection molding machine capable of increasing durability of the nozzle includes a manifold having a resin injecting hole extending therethrough in its inner portion, a nozzle having a piston guide bushing formed at its upper end inserted into the nozzle seated groove of the manifold, a manifold guide bushing for surrounding and threadedly engaging with an upper portion of the piston guide bushing of the nozzle, and a fastening bushing for receiving an outer surface of the manifold guide bushing and threadedly engaging with an inner circumferential surface defining the nozzle seated groove of the manifold so that the manifold guide bushing is fastened by the fastening bushing to the inner circumferential surface defining the nozzle seated groove of the manifold.

Abstract: In the case of an injection nozzle, in particular hot-runner nozzle (7), for arrangement in an injection mould (11) which has a relatively large number of plates as a function of the configuration, and which has, on its solid mould side (I), at least one platen (4) and one feed plate (5), and, on its moveable, separable mould side (II) at least one cavity plate (2), at the mould cavity (3) of which a nozzle point (8) is used, where the hot-runner nozzle (7) has, at its rear end distant from the nozzle point (8), a hollow flange housing (18) which has a housing collar (11) and which receives a material tube (20) with a flow channel (9) for a material melt leading to the nozzle point (8), and also has connections for a heating system (16) and/or cooling system and temperature sensor (17), the material pipe (20) has been connected at its rear end by way of a delimited length section (21) of its outer jacket area to the flange housing (18) at the inner jacket area thereof so as to form a single piece.

Abstract: A mold assembly includes an upper mold cavity, a base plate, and a flow element. The upper mold cavity defines a primary runner and a plurality of sub-runners on a top surface in communication with the upper mold cavity. A gate is defined in the primary runner for injecting liquefied plastic into the upper mold cavity. The base plate defines an outlet thereon corresponding to the gate for outputting the liquefied plastic. The upper mold cavity and the base plate corporately form a closed cavity therebetween. The flow element is received in the closed cavity and movable between a first position and a second position. In the first position, the flow element is engaged with the primary runner and plurality of sub-runners. In the second position, the flow element is separated with the primary runner and plurality of sub-runners.

Abstract: The present invention provides a composite nozzle cap having a first part made of metal and an outer tip of a polymeric material. The first part mechanically secures the nozzle into the nozzle housing by engaging the nozzle housing and pressing against a base flange on the nozzle to clamp the flange between the first part of the nozzle housing. The second part extends away from the nozzle housing and is mechanically secured to the first part. An inner face of the second part contacts the nozzle tip to prevent melt flow between the second part of the nozzle tip. An outer face of the second part contacts the gate insert to avoid melt flow between the second part and the gate insert. As the second part is of a polymeric material, it avoids the heat transfer concerns associated with a metallic interface between the nozzle tip and the gate insert.

Abstract: The present invention is a nozzle for an injection molding runner system where parts of the nozzle, and in particular the nozzle tip are made from a nanocrystalline material. Nanocrystalline materials used include nanocrystalline copper and nanocrystalline nickel, which have high thermal conductivity and increased material strength. A conventional form of the metal is worked till its grains are reduced in size to less than 100 nm to achieve the desired properties.