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 valve bushing having an actuator portion and a pin guiding component is disclosed. The actuator portion has a cup-shaped body with a stepped bore that defines a chamber in which a piston for opening and closing a valve gate disposed, and also defines a transfer bore extending through a base portion of the cup-shaped body. A stand-off member elevates the cup-shaped body from the manifold. The pin guiding component defines a sealing bore that extends between a body portion and a boss that extends rearward from the body portion. The boss is received in the transfer bore of the cup-shaped body to define a thermal transfer area between the pin guiding component and the actuator portion that is spaced apart from the manifold, and the actuator portion is located relative to the pin guiding component by engagement between the pin guiding component and the stand-off member.

Abstract: A hot runner nozzle having an electrical heating element includes a connector for producing an electrical connection to a connection line, terminal contacts for the heating element terminating in an insulation body for the connector that separates the terminal contacts from one another electrically. The connection line has contact elements that are electrically contactable with the terminal contacts of the heating element. The insulation body is arranged at least in part in a receiving sleeve of the connector, that the connection line may be fixed in or on the receiving sleeve such that the contact elements of the connection line electrically contact the terminal contacts of the heating element, and that a first end of the receiving sleeve that faces towards the heating element wraps around the insulation body and has on this first end two opposing feet that face outward and that are attached to the heating element.

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: This invention is to eliminate all of the above-mentioned disadvantages by proposing a heating element intended to be deposited on a metal substrate, e.g., made of aluminium or an aluminium alloy, or even stainless steel, which is capable of delivering high outputs, in particular with a surface/output ratio possibly going as high as values on the order of 40 W/cm2, while at the same time maintaining good dielectric performance levels and/or being capable of delivering an even degree of heat over an entire surface.

Abstract: A runnerless nozzle for an injection molding apparatus includes a bracing component having an internal space and a lateral bore, a nozzle tip extending from the internal space through the lateral bore of the bracing component, and a securing component installable in the internal spaced of the bracing component. At least one of the bracing component and the securing component defines a lateral channel in communication with and upstream channel for delivering molding material to the nozzle tip. The securing component includes an angled surface for wedging a likewise angled surface of the nozzle tip to engage the nozzle tip with the bracing component when the securing component is installed in the bracing component.

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 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: A sprue device for an injection mold includes a first part and a second part. The sprue device is sealed and water-cooled so as to reduce overall molding time. The connecting section defines spiral grooves. The second part includes a chassis and an extension from the chassis. The chassis is defined with a through hole, and two gates communicated with the through hole respectively. The spiral grooves mate with the wall of the mounting hole to form a spiral runner. The gates, the through hole, and the spiral runner communicate with each other. An injection mold using the sprue device is also described.

Abstract: A hot runner injection molding apparatus includes a machine injection unit with a machine nozzle, a first machine platen fixed to the machine base, a second machine platen movable with respect to the first machine platen, a hot runner manifold having an inlet melt channel and a plurality of output melt channels, a plurality of hot runner nozzles associated with the manifold output melt channels, and a movable valve pin plate connected to a plurality of valve pins.

Abstract: An injection molding system is disclosed that utilizes a melt channel wherein at least a portion of the melt channel has a noncircular cross-section for balancing shear in a melt stream of moldable material that flows therethrough. The noncircular cross-section of the melt channel portion may be, for e.g., capsule-shaped, extended egg-shaped, oval, teardrop-shaped, or peanut-shaped. A flow splitter is also disclosed that is positioned offset from a central axis of an upstream melt channel to protrude between inlets of respective downstream melt channels, where the upstream melt channel splits into the downstream melt channels, to thereby create a narrower inlet into one of the downstream melt channels and a wider inlet into the other of the downstream melt channels.

Abstract: A dynamic mixer and associated injection molding system for mixing a melt flow. The injection molding system includes: a hot runner assembly having a plurality of splits; an injection unit that delivers a melt flow to the plurality of splits in the hot runner assembly via a melt channel; and a dynamic mixer incorporated into the melt channel upstream from the plurality of splits, wherein the dynamic mixer includes a rotor assembly configured to be rotationally driven by the melt flow, and wherein the rotor assembly is further configured to mix the melt flow passing through the melt channel.

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 nozzle having a nozzle body defining an injection cavity and at least one curing device integrally formed within the nozzle body.

Abstract: Apparatus for measuring the temperature of a nozzle having fluid material injected from an injection molding machine through a flow channel in a heated manifold that is coupled to a nozzle that is coupled to the cavity of a mold, the apparatus comprising: a heating device comprising a controllably heatable thermally conductive heating element; the heating element of the heating device being mounted on or around the outer surface of the tube of the nozzle at an end point; a temperature monitor comprising a temperature sensor mounted on or around the nozzle at a selected position along the axis of the bore of the nozzle; and, a thermal insulator disposed along the axis of the nozzle separating the end point of the heating element and the temperature sensor.

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: An injection molding apparatus includes an inlet component, a plurality of nozzles, and a plurality of hoses, each of which is not heated. The hoses are connected between outlets of the inlet component and respective molding material inlets of the nozzles for conveying molding material from the inlet component to the nozzles. Hoses may also be connected between a rail plate and the nozzles for delivering cooling fluid or actuation fluid for an actuator to and from the nozzles. The nozzles may be fastened to a mold plate of the injection molding apparatus, such as by a threaded bushing. A heated insert may at least partially define the mold cavity to heat molding material in the mold cavity.

Abstract: An adaptor bushing for an injection molding apparatus comprising a manifold, a nozzle assembly and a nozzle retention device, comprises: (i) a bushing passage for fluid communication between a passage of the manifold and a nozzle passage; (ii) at least one transition region joining portions of the bushing passage; and, (iii) at least one alignment surface effective to (a) align longitudinal centerlines of the bushing passage, manifold passage and nozzle passage and (b) eliminate or reduce relative tilt of the adaptor bushing, nozzle assembly and manifold so that with the adaptor bushing clamped between the manifold and nozzle assembly, leakage of material at the interfaces of the bushing passage with the manifold passage and nozzle passage is eliminated or reduced to an acceptable level under normal operating conditions. A manifold and nozzle assembly construction comprises an adaptor bushing interposed between a manifold passage and a nozzle passage.

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 nozzle that can be used in an injection blow molding system without use of an external heat source comprises a two-piece structure broadly including a structural outer body for coupling the nozzle to a resin manifold and a thermally conductive insert. At least a portion of an axial length of the insert has an outer diameter that is less than an inner diameter of a coinciding coaxial portion of the outer body, such that the differences in the inner and outer diameters present an insulating air gap along at least a portion of the nozzle length. A sufficient operating temperature for hot melt resin can then be obtained without use of the external heat source.

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 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 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: Disclosed are a microlens array, and a method of positioning and aligning the microlens array on another device. Generally, the microlens array comprises an array of injection molded microlens elements, and a supporting flange. Each of the microlens elements has a generally spheroid or spherical shape, and the supporting flange connects together the array of microlens elements to facilitate positioning that array of lenses on a printed circuit board, semiconductor package or wafer. This array is well suited for use with vertical cavity surface emitting lasers (VCSELs); and, in particular, the preferred embodiment of the invention addresses the problem of VCSEL laser array alignment by using arrays of microlenses elements fabricated by injection molding.

Abstract: An injection molding apparatus is provided with a die having a hot nozzle, and a manifold formed by a hot runner. A communication passage that is in communication with the cavity is provided in the die, a concave portion defined at an end portion of the die, and the hot nozzle includes a nozzle body of a cylindrical shape that is inserted in the communication passage, and a flange portion that is formed at an end side of the nozzle body and is exposed outside of the communication passage, in which a band heater that heats the nozzle body is inserted between the communication passage and the nozzle body, and a ring heater that heats this flange is inserted in the concave portion and between the communication passage and the flange.

Abstract: According to an aspect, there is disclosed a hot runner system (100), comprising: a first surface (205) being elastically deformable; a second surface (210) forming, in cooperation with the first surface (205), a melt-leakage gap (215) being located between the first surface (205) and the second surface (210); and an active material (220) being: (i) coupled with the first surface (205), (ii) held normally stationary, (iii) configured to be operatively coupled with a signal source (225), and (iv) configured to elastically deform in response to receiving a signal from the signal source (225), upon elastic deformation of the active material (220), the first surface (205) becomes moved toward the second surface (210) such that a size (235) of the melt-leakage gap (215) becomes controlled.

Abstract: Disclosed is a hot runner (100), including: a first plate (102) having a first-plate alloy; a second plate (104) having a second-plate alloy, the second plate (104) being coupled with the first plate (102), and the second plate (104) and the first plate (102) defining a manifold pocket (213); a manifold (224) being supportively received in the manifold pocket (213), and the manifold (224) having a drop (225); a nozzle assembly (400) being supportively received by the second plate (104), the nozzle assembly (400) connecting with the drop (225) of the manifold (224); and a nozzle-support structure (101), including: a first load-bearing insert (207) contacting the second plate (104), the first load-bearing insert (207) contacting the nozzle assembly (400), the first load-bearing insert (207) having a first insert material being stronger than the second-plate alloy of the second plate (104), the first insert material being strong enough to withstand a first high-point load (150) to be transmitted from the nozzle

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 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: An injection nozzle assembly, comprising: a nozzle housing; a nozzle tip having an inlet portion being contactable with the nozzle housing; and a tip retainer being movable relative to the nozzle housing between a first position, a second position and a third position.

Abstract: The present invention relates to a mould, in which a completely closed cavity can be formed in one operating state, comprising an injector (10) which is at least partially accommodated in the mould (14) and the discharge opening of which opens into the closed cavity. According to the invention, the injector is designed with a material feed duct (30) and a material return duct (34), wherein the two ducts (30, 34) open into a connecting chamber (32) in the region of the tip of the injector (10) and are flow-connected to one another via said connecting chamber (32). In this case, an injector needle (36) can be switched into at least two operating positions, wherein, in one moved-forward operating position, the discharge opening is closed by means of the tip (38) of the injector needle (36) and, in the other, pulled-back operating position, the discharge opening is flow-connected to the connecting chamber, and the injector (10) is therefore open.

Abstract: A gate adapter for receiving a molten molding material and for the discharge thereof to a gate distributor block (9), wherein the gate adapter (7) has an inlet (10) for receiving the molten molding material, first and second outlets for the controlled discharge of the molten molding material and first and second closable connecting passages (18, 18?) which respectively connect an outlet to the inlet (10) and a gate distributor block for connection to a gate adapter as set forth in claim 20 wherein at least the gate distributor block (9) has two inlets for connection to outlets of the gate adapter (7) and at least two ingate passages (13) for connection to a mold cavity, wherein each ingate passage (13) is connected by way of distributor passages to at least one inlet of the gate distributor block (9).

Abstract: An injection molding nozzle comprises a material feed pipe subtending a flow duct communicating flow-wise with at least one nozzle tip. Each tip points transversely to axial direction A of the nozzle and is held by a manifold. The manifold is pluggable/insertable into the material feed pipe and includes a neck and a base. A manifold duct system is subtended in the manifold. A main duct extending the flow duct is in the neck and the base comprises a deflection site and at least one manifold duct. The manifold duct runs radially to axial direction A. The nozzle tip is affixed in a seating unit fitted with a central recess. Radial boreholes running transversely to axial direction A fit into the seating unit and receive plugged-in nozzle tips. The central recess receives the base, the nozzle tip being secured by the base to and in the seating unit.

Abstract: An injection molding apparatus includes a manifold defining a manifold channel for receiving pressurized molding material from an upstream source and a nozzle defining a nozzle channel in communication with the manifold channel to define a flow channel. The nozzle is associated with a mold gate of a mold cavity and delivers molding material to the mold gate. A vane, such as that of an impeller or screw, is rotatably disposed in the flow channel upstream of a mold gate. A motor is coupled to the vane and rotates the vane in either direction. Rotation of the impeller or screw can be automatically adjusted by a controller and a sensor that measures pressure, temperature, or other property of the molding material.

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: A process for manufacturing a plastic hollow body by molding a molten plastic parison, which is extruded vertically through a die, in a mold comprising two complementary cavities, characterized in that the die is adjusted so that the shape of the parison matches that of the mold cavities. A die suitable for such a process.

Abstract: The present invention concerns a transfer element (1, 9) for an injection molding system comprising a flow lumen for a plasticised plastic material. To provide a transfer element for an injection molding system, which makes it possible to further increase the material throughput of the injection molding system without having to tolerate increased wear of seals and other system components, it is proposed in accordance with the invention that it has a device for degassing of the flow lumen.

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: An injection nozzle having a nozzle body defining an injection cavity and at least one curing device integrally formed within the nozzle body.

Abstract: An apparatus and methods for attaching electrical leads (22, 24) to a heating layer (16) of a heater are provided. An attachment material (50) is thermally sprayed over cords (32) of the electrical leads (22, 24), which are in contact with the heating layer (16) over a contact area (20). The attachment material (50) and the heating layer 16 are further thermally sprayed with a layer (52), which is an isolating material. The thermal sprayed connection between the electrical leads (22, 24) and the heating layer (16) thus provides more intimate contact and an improved electrical connection.

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: An injection molding apparatus includes an injection molding nozzle having a nozzle body defining a channel for flow of molding material and a nozzle tip coupled to the nozzle body. The nozzle tip is shaped to define a converging gap with a mold component into which the nozzle tip is inserted during use. A seal piece having a wedge or wedge-like portion is disposed between the nozzle tip and the mold component Pressure of molding material acting on a surface of the wedge portion wedges the wedge portion into the converging gap.

Abstract: A plastic injection machine nozzle heater housing and heater. The heater housing includes a heater body having an axial thru-bore for receiving a plastic injection machine nozzle of interest. Bores may extend into the heater body from a rear face thereof for receiving corresponding cartridge heater(s) and a thermocouple. A wire receiving groove may be provided to hold the cartridge heater and thermocouple wires. A wire passage aperture may be provided to permit the cartridge heater and thermocouple wires to extend from the heater body for appropriate connection to a heater controller or other appropriate device. Cartridge heater(s) and a thermocouple are inserted into the corresponding bores and a cover plate of the heater housing is then secured to the end of the heater body so as to cover the heater(s), the thermocouple, and the portion of the associated wires residing in the wire receiving groove.

Abstract: Disclosed, amongst other things, is a gate insert of an injection mold that includes a base member. The base member defines a nozzle interface for receiving, in use, a nozzle of a melt distribution system that is heated, in use, by a heater, and a gate, the gate configured to fluidly link, in use, a melt channel of the nozzle with a molding cavity. The gate insert further includes a thermal regulator associated with the base member, the thermal regulator includes a direct energy conversion device that is capable of heating and cooling, wherein the thermal regulator is controllably operable, in use, to control the temperature of the gate.

Abstract: A nozzle adapter for an injection molding machine includes a body and one or more retainers mountable to an outer surface of the body. When the body and a retainer are assembled together they cooperate to define a cavity adapted to contain a cartridge heater between the body and the retainer. Access to allow replacement of the cartridge heater can be gained by removing the retainer from the body without removing the entire nozzle adapter from the injection molding machine.

Abstract: The embodiments of invention relate to a hot runner nozzle including at least one nozzle duct for a plasticized plastic, which ends in a nozzle tip and which can be temperature-controlled by a heater, wherein the hot runner nozzle can be attached to an injection molding tool or the like and wherein the heater and the nozzle duct are provided in a common housing of the hot runner nozzle laterally next to one another. The housing encompasses at least one material recess, which divides the housing adjacent to the nozzle duct and adjoining to the heater into housing regions, which are spaced apart from one another.

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.