Abstract: A nozzle is attached to a heating cylinder via a nozzle adapter. A sensor for pressure measurement is attached to the nozzle adapter. A molten resin is injected into the air with a front of the nozzle open, and a resin pressure is measured by pressure measuring unit while the molten resin is being injected into the air. Based on the resin pressure, the viscosity of the injected molten resin is determined.

Abstract: When a plurality of striped molded products are molded at a time, the molded products having a striped pattern and an outstanding design property are obtained by preventing part of molten resins from being unevenly distributed in an inappropriate manner when being fed into a cavity of a metal mold. A hot runner nozzle is provided with a first resin flow path and a plurality of second resin flow paths. The first flow path has a funnel section which continues with a nozzle gate at a centripetal position and which allows a first molten resin to be gathered at the centripetal position of the funnel section so as to feed the resin into the nozzle gate. The second resin flow paths have a plurality of corresponding discharge ports facing and communicating with the funnel section of the first resin flow path, each of the discharge ports being disposed around the centripetal position, so that the second molten resin different from the first molten resin is fed into the funnel section.

Abstract: A nozzle-locating insulator (300), comprising: a body assembly (302), having: a spring-facing surface (304) including: spring-contact sections (306); and spring-noncontact sections (308) interposed between the spring-contact sections (306).

Abstract: At a filling termination stage when performing multi-layer molding by means of a hot runner nozzle, an intermediate layer in a multi-layer molded article is prevented from being formed in a shape causing the intermediate layer to enter into a sprue in a portion of a mold cavity in a mold corresponding to the sprue. The multi-layer molded article with no intermediate layer being exposed in a sprue cut portion can be therefore obtained. In this manner, a diameter of a discharge port opening and closing mechanism part for opening and closing the resin discharge ports in the shut pin is made different from a diameter of a nozzle gate opening and closing mechanism part configured of the projection for pushing out the molten resin in the nozzle gate.

Abstract: An edge-gated injection molding apparatus is disclosed having an injection manifold assembly for distributing a melt stream of moldable material to a plurality of mold cavities aligned on opposing sides of the injection manifold assembly. The injection manifold assembly includes a plurality of melt outlets with each melt outlet being in fluid communication with a respective mold cavity, and a plurality of biasing components disposed along a centerline of the injection manifold assembly. A nozzle seal is disposed between each injection manifold assembly melt outlet and its corresponding mold cavity, with an upstream end of the nozzle seal being slidably disposed against its respective melt outlet. Each biasing component is disposed between a pair of melt outlets and corresponding nozzle seals for biasing the melt outlets and nozzle seals outward from the centerline of the injection manifold assembly toward their respective mold cavities and applying a preload thereto.

Abstract: Disclosed is a side gate nozzle assembly (108) having a nozzle body (210) and at least one side gate nozzle tip assembly (112) wherein the nozzle body (210) and the at least one side gate nozzle tip assembly (112) are slidably engaged to each other.

Abstract: An edge-gated injection molding apparatus is disclosed for distributing a melt stream to a plurality of mold cavities aligned on opposing sides of an injection manifold assembly. The injection manifold assembly includes melt outlets aligned on opposing sides thereof with a nozzle seal in fluid communication with each melt outlet for transferring the melt stream to a corresponding mold cavity. A sliding relationship between each nozzle seal and its respective melt outlet while the nozzle seal is securely held relative to the mold gate permits misalignment between the nozzle seal and its respective melt outlet in the cold condition without causing stress on the nozzle seal. Under operating conditions, the sliding relationship permits subsequent alignment between the nozzle seal and its respective melt outlet. The nozzle seal has a two-piece gate seal with components thereof threadably coupled to each other such that relative rotation therebetween applies a sealing preload.

Abstract: According to the invention, there is a method for producing an acrylate-based solid, comprising the steps of: (i) dispersing less than 20% w/v of an alkyl or aryl acrylate polymer/copolymer in a solvent comprising at least one acrylic monomer; (ii) dispersing in the fluid mixture formed by step (i) a further quantity of an alkyl or aryl acrylate polymer/copolymer; and (iii) curing the resulting material to form a solid, wherein the alkyl or aryl acrylate polymer/copolymer of step (i) contains less than 0.1% w/w of a free radical.

Abstract: Disclosed is a side gate nozzle assembly (108) having a nozzle body (210) and at least one side gate nozzle tip assembly (112) wherein the nozzle body (210) and the at least one side gate nozzle tip assembly (112) are slidably engaged to each other.

Abstract: The inventors have researched a problem associated with known molding systems that inadvertently manufacture bad-quality molded articles or parts. After much study, the inventors believe they have arrived at an understanding of the problem and its solution, which are stated below, and the inventors believe this understanding is not known to the public. During operation, the gate orifice and nozzle tip position are fixed. The inventors believe that there appears to be no known mechanism that allows optimization of the tip to gate relationship. Known methods of adjusting position of a nozzle tip, such as shimming between a cavity plate and a manifold plate, or replacing nozzle stack components, may be time consuming and difficult. The known hot runner assembly often must be removed from the molding machine to make the desired adjustments.

Abstract: Embodiments of the invention relate to injection mold components, assemblies, and molding system that include superhard materials. Such injection mold components, assemblies, and systems may decrease wear of certain injection mold components, which may result in improved productivity of the injection mold and molding systems that utilize such components.

Abstract: A plastic body is configured as a tubular-shaped hollow body in a mid region thereof. The tubular-shaped hollow body is closed off by respective solid bodies at first and second ends. A displacement body, which is arranged at the transition from the hollow body to the first solid body, is arranged at the first end of the tubular-shaped hollow body. A hollow space, which extends between the tubular-shaped hollow body and the second solid body, is formed at the second end of the hollow body. For a production system for making an at least partially tubular-shaped plastic body in an injection molding process, the cavity has an elongated configuration with a first end and a second end and an injector nozzle is arranged between the ends of the cavity.

Abstract: A mold-tool system (10), comprising: a first component (12) defining a first passageway (13) configured to convey, in use, a flowable molding material; a second component (14) defining a second passageway (15) configured to: (i) be in fluid communication with the first passageway (13), and (ii) convey, in use, the flowable molding material. A wear-resistant assembly (16) contacts, at least in part, the first component (12) and the second component (14).

Abstract: Embodiments relate to injection mold assemblies that include superhard materials, such as polycrystalline diamond compacts (“PDCs”), and related injection mold presses, components, and methods. The superhard materials are positioned to define at least a portion of a mold cavity for injection molding. Superhard materials may be fully or partially encapsulated by a substrate and the superhard materials and substrate may be secured to the injection mold. Superhard materials may be formed or otherwise separated from a substrate and secured to the injection mold without support of a substrate. Superhard materials may also be attachable to an injection mold to define only a portion of a mold cavity. In an embodiment, an injection mold insert includes a superhard material for insertion into a generic cavity within an injection mold assembly.

Abstract: A plastic material injection molding system includes a feeding nozzle, a forming mold having a cave therein, and a material-passing mold having a runner therein. The runner communicates both the feeding nozzle and the cave, and has two curved parts therein for slowing down the plastic material injected from the feeding nozzle in order.

Abstract: A mold-tool system (100), comprising: a nozzle tip assembly (200) having a tip-body assembly (206), the tip-body assembly (206) being configured for reduced axial tilting, at least in part.

Abstract: A nozzle-tip apparatus (100), comprising: a nozzle-tip body (102) configured to connect with a molding-nozzle assembly (200). The nozzle-tip body (102) has a front end (104) defining an exit orifice (106). The exit orifice (106) is configured to slidably receive a valve stem (202) of the molding-nozzle assembly (200). The nozzle-tip body (102) has a pressure-relief feature (108).

Abstract: Embodiments relate to injection mold assemblies that include superhard materials, such as polycrystalline diamond compacts (“PDCs”), and related injection mold presses, components, and methods. The superhard materials are positioned to define at least a portion of a mold cavity for injection molding. Superhard materials may be fully or partially encapsulated by a substrate and the superhard materials and substrate may be secured to the injection mold. Superhard materials may be formed or otherwise separated from a substrate and secured to the injection mold without support of a substrate. Superhard materials may also be attachable to an injection mold to define only a portion of a mold cavity. In an embodiment, an injection mold insert includes a superhard material for insertion into a generic cavity within an injection mold assembly.

Abstract: In one embodiment, a molding system for creating a molded-in-color panel has a first mold member with a first forming surface for forming a portion of a panel with an exposed surface. The molding system has a second mold member having a second forming surface for forming a concealed portion of the panel. One of the first and second mold members is translatable relative to the other to collectively receive a heated molded-in-color resin to form the panel. The molding system has an injector for injecting molded-in-color resin into the mold. The second forming surface is sufficiently smooth so that the exposed surface of the panel is free of visible flow lines.

Abstract: An injection molding apparatus, such as a hot runner or hot half, includes a manifold having a manifold channel and a nozzle having a nozzle channel. The nozzle is coupled to the manifold, and the manifold channel and the nozzle channel are in communication to define a flow channel. A valve pin bushing has a flow restrictor disposed in the flow channel on an upstream side of the valve pin bushing. A moveable valve pin extends through a bore of the valve pin bushing.

Abstract: A plastic body is configured as a tubular-shaped hollow body in a mid region thereof. The tubular-shaped hollow body is closed off by respective solid bodies at first and second ends. A displacement body, which is arranged at the transition from the hollow body to the first solid body, is arranged at the first end of the tubular-shaped hollow body. A hollow space, which extends between the tubular-shaped hollow body and the second solid body, is formed at the second end of the hollow body. For a production system for making an at least partially tubular-shaped plastic body in an injection molding process, the cavity has an elongated configuration with a first end and a second end and an injector nozzle is arranged between the ends of the cavity.

Abstract: A color changing apparatus of an injection molding hot runner die which is simple in construction and easily capable of changing colors for molding products without removing and replacing a hot runner. In the apparatus, a passage for supplying a melted resin to a molding die, a divided type hot runner block is provided with hot runners each for exclusive use of each of molding colors, sprues and nozzles being in communication with the hot runners. A moving device is provided for moving the molding die, which is united with the divided type hot runner block, along with the divided type hot runner block. A positioning device is adapted to place the molding die in position in a state where either of the sprues of the divided type hot runner block is moved by the moving device to a position opposed to an injection nozzle for injecting the melted resin.

Abstract: Disclosed, amongst other things, is a molding apparatus and an injection molding process. The molding apparatus includes a positioner that is configured to regulate, in use, a relative position between a gate member and a nozzle of a melt distribution apparatus between a retracted position and an extended position for adjusting a volume of a nozzle melt reservoir that is definable between the gate member and the nozzle between a reduced volume and an expanded volume, respectively. The injection molding process includes regulating a relative position between a gate member and a nozzle of a melt distribution apparatus, with a positioner, into one of a retracted position and an extended position for adjusting a volume of a nozzle melt reservoir that is definable between the gate member and the nozzle between a reduced volume and an expanded volume, respectively.

Abstract: A mold-tool system (100) configured to accommodate a valve stem (104), the mold-tool system (100) comprising: a nozzle assembly (402) having: a nozzle-output end (408) being configured to support, at least in part, slide movement of the valve stem (104).

Abstract: A coinjection molding apparatus is disclosed that provides a skin material melt stream and a core material melt stream to a nozzle. A nozzle tip of the nozzle defines a central skin material melt passage for receiving the skin material melt stream, an annular core material melt passage for receiving the core material melt stream and an annular outer layer melt passage, which receives a portion of the skin material melt stream from the central skin material melt passage. The skin material melt stream from the central skin material melt passage forms an inner layer of a molded article, the core material melt stream from the core material melt passage forms a core layer of the molded article, and the skin material melt stream from the outer layer melt passage forms an outer layer of the molded article, wherein the three melt streams combine prior to entering a mold cavity.

Abstract: A mold-tool system (100), comprising: a nozzle housing (102) having a melt passageway (103) extending from an input end (106) to an output end (108). A valve stem (104) is: (i) slide movable along the melt passageway (103), and (ii) slide supported by the input end (106) and by the output end (108).

Abstract: Disclosed, amongst other things, is a back-up device that is configured to provide a structural support, in use, between a manifold and a housing member within a melt distribution apparatus of an injection molding system. The back-up device is associated, in use, with a valve-gate apparatus within a nozzle drop. The back-up device includes a cold-side member formed from a first material and a hot-side member formed from a second material. The first material is more thermally conductive than the second material. The cold-side member is configured to be thermally connectable, in use, with the housing member and the hot-side member. The hot-side member is configured to be thermally connectable, in use, with the manifold and the cold-side member. The hot-side member is also configured to prevent the cold-side member from directly contacting the manifold.

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: The present invention relates to a nozzle assembly for an injector that enables production of high quality injection products by effectively exhausting gas in a molten plastic flowing at a high speed. The present invention may include a body having a molten plastic pathway through which the molten plastic passes; a head, one end thereof being connected to the body and the other end thereof being provided with an injecting hole for injecting the molten plastic; a poppet mounted in the body, first and second plastic moving groves being formed in a length direction thereof at an exterior circumference thereof such that the molten plastic passes through the first and second plastic moving groves and gas in the molten plastic is extracted; and a first vent ring exhausting the extracted gas to the exterior of the body, the poppet being inserted in the first vent ring, wherein the molten plastic pathway is only communicated with the second plastic moving groove.

Abstract: An injection molding nozzle having improved corrosion and wear resistance is disclosed for use in a hot runner injection molding system. The nozzle includes a nozzle body having a nozzle melt channel for receiving a melt stream of moldable material from a melt source. The nozzle has a nozzle seal comprised of a tip retainer and a nozzle tip having a tip melt channel, wherein the tip retainer secures the nozzle tip to the nozzle body such that the tip melt channel receives the melt stream from the nozzle melt channel. The nozzle tip further includes a tip base of a thermally conductive material that has a diamond crown secured to a downstream end thereof. The diamond crown sits within a vestige area of the injection molding system and provides improved corrosion and wear resistance to the nozzle tip.

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: 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 device for processing elastomers or thermoplastics has a distribution system that is disposed between a plasticizing unit and an injection-molding die for distribution of the material plasticized in the plasticizing unit. At least one nozzle is disposed on the distribution system, by way of which nozzle the plasticized elastomer can be injected into the cavity of the injection molding die. The at least one nozzle is attached outside the center on a rotating insert, in each instance, which insert is disposed in a recess in the distribution system.

Abstract: Injection molding apparatus has upper and lower mold halves that split along the center line of the parison cavity and the gate opening leading thereto. Each hot melt injection nozzle is received within a tubular insert cup having a reduced diameter tip that is seated within the gate opening. The cup is mounted to the lower mold half so as to remain secured thereto as the upper mold half opens and closes the mold. The base end of each nozzle has a swivel ball and socket relationship with the manifold block which supplies it with hot melt, while the tip end of each injection nozzle has a swivel ball and socket type interface with the interior front end of the insert cup, thus providing for dimensional variations in the parts of the tooling that arise during non-uniform thermal expansion and contraction thereof.

Abstract: Disclosed, amongst other things, is a melt distribution apparatus of a hot runner and a related method for balancing melt flow to a plurality of drops. The melt distribution apparatus includes a plurality of chokes with each choke of the plurality of chokes being associated with a corresponding one of a drop of a plurality of drops. Each choke of the plurality of chokes being configured to contribute, during an injection of a molding material therethrough, a choke melt-pressure loss such that the plurality of chokes contribute an aggregate choke melt-pressure loss that is generally between 10% and 75% of an aggregate hot runner melt-pressure loss.

Abstract: An injection molding apparatus, such as a hot runner or hot half, includes a manifold having a manifold channel and a nozzle having a nozzle channel. The nozzle is coupled to the manifold, and the manifold channel and the nozzle channel are in communication to define a flow channel. A valve pin bushing has a flow restrictor disposed in the flow channel on an upstream side of the valve pin bushing. A moveable valve pin extends through a bore of the valve pin bushing.

Abstract: A manufacturing method for an actuator including a casing and a housing. The method includes setting a metallic ring in a molding die; injection molding a first flange portion of the casing using one annular hooking piece of the metallic ring as a part of a surface of the molding die so as to outsert-mold the metallic ring on a molded surface of the first flange portion, the molded surface being opposite to a first connecting end surface of the first flange portion; engaging the first flange portion with a second flange portion of the housing so as to be opposed to each other; and applying force to bend the metallic ring to form an other annular hooking piece, thereby crimping and fixing the first connecting end surface of the casing with a second connecting end surface of the housing.

Abstract: Disclosed herein is a transition channel for conveying fluid between a first conduit and a second conduit in a molding system. For example, there is disclosed a transition channel for providing a flow path between a first conduit having a first cross-section and a second conduit having a second cross-section in a molding system, the transition channel configured to have a shape that follows a curve that substantially corresponds to melt natural stream lines.

Abstract: An injection molding apparatus that includes a hot runner and a mold. The hot runner includes at least one nozzle that engages a nozzle-receiving cavity of the mold. The molding apparatus further includes a nozzle sleeve surrounding a portion of the nozzle and having a nozzle-sealing opening that receives the nozzle. The nozzle sleeve is movably secured to the hot runner or the mold so that when the mold is removed from the hot runner, the nozzle sleeve remains secured to the corresponding part of the apparatus. When the mold and hot runner are engaged with one another, the nozzle sleeve is springingly urged into sealing engagement with a sealing surface of the nozzle receiving cavity of the mold.

Abstract: The present invention relates to a manifold unit for supplying casting material in an injection moulding system for processing thermoplastic polymers via a hot runner system with at least one needle valve nozzle which can be sealed by a shut-off needle. In this case, the shut-off needle can be moved by a hydraulic or pneumatic drive system. The needle valve nozzle has a first longitudinal axis and the drive system, which has a piston, has a second longitudinal axis, the first longitudinal axis being arranged parallel to and laterally offset from the second longitudinal axis.

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.

Abstract: An injection molding apparatus that includes a hot runner and a mold. The hot runner includes at least one nozzle that engages a nozzle-receiving cavity of the mold. The molding apparatus further includes a nozzle sleeve surrounding a portion of the nozzle and having a nozzle-sealing opening that receives the nozzle. The nozzle sleeve is movably secured to the hot runner or the mold so that when the mold is removed from the hot runner, the nozzle sleeve remains secured to the corresponding part of the apparatus. When the mold and hot runner are engaged with one another, the nozzle sleeve is springingly urged into sealing engagement with a sealing surface of the nozzle receiving cavity of the mold.

Abstract: A liquid co-injection apparatus comprising a high-pressure resistant rubber plug capable of obstructing a slit when the chamber is under a high hydraulic pressure. The main body of the liquid co-injection apparatus comprises a chamber part, a downstream branch-tube extending from the chamber part in different directions, an upstream branch-tube, and a connection opening with an attached lid. A rubber plug is attached to the inside of the lid to allow obstruction of the lid when the slit of the rubber plug is closed, and to allow communication between the insides of the chamber part and the connecting tube when the connecting tube is inserted into the slit. Moreover, a rib is provided on the outer peripheral surface of the rubber plug to allow the rubber plug to be strongly drawn and pressed onto the inner peripheral surface of the lid member, further securing the obstruction of the slit.

Abstract: An injection molding three way shut off valve assembly and method in which the three way valve assembly is configured to be disposed to control a flow of a molten material from an injection unit to a runner system. Preferably, the valve assembly has a valve plunger configured to be disposed between the injection unit and the runner system; the valve plunger having a flow-through channel and a purge channel. Movement structure is configured to control the position of the valve plunger between (i) a molten material flow position where the molten material flows through the flow-through channel, (ii) a molten material blocked position where the molten material is blocked from flowing through the flow-through channel, and (iii) a molten material purge position where the molten material flows through the purge channel, without disconnecting the injection unit from the runner system.

Abstract: An improved nozzle apparatus and method of manufacture are provided in which non-compatible components (such as a metallurgically non-weld-compatible nozzle tip and seal) may be secured/attached. For example, the apparatus and method may comprise securing a seal between a first portion of a nozzle tip and a retention ring. The retention ring may comprise a material that is weld-compatible with the nozzle tip and may be welded to the nozzle tip whereas the seal may be non-compatible with the nozzle tip. As a result, the materials of the nozzle tip and the seal may be chosen substantially without regard to their compatibility.

Abstract: A coinjection molding apparatus includes a manifold, a nozzle body coupled to the manifold, a sleeve disposed within the nozzle body and defining an outer melt channel between the sleeve and the nozzle body, a pin disposed within the sleeve and defining an inner melt channel between the pin and the sleeve, and a nozzle tip having an alignment portion contacting the sleeve. The sleeve is actuated to open and close melt communication of the outer melt channel and a cavity gate. The pin is actuated to open and close melt communication of the inner melt channel and an opening of the sleeve. The alignment portion aligns the sleeve with the cavity gate along the actuated range of the sleeve.

Abstract: An expansion nozzle for conducting melt from a floating manifold to a mold assembly comprises a bushing having a bushing flange and spigot having a passage therethrough joining a nozzle inlet and an outlet, a head having a seating surface and a bore through the head slidably receiving the spigot so that the spigot is movable relative to the head over a range from abutting contact of opposing surfaces of the head and bushing flange to a limit of axial separation of the opposing surfaces, axial separation of opposing surfaces of the head and bushing flange being maintained throughout an operating temperature range. Springs maintain sealing contact of a seating surface of the head with a mating surface of the mold assembly. Advantageously, a locating ring provides a reaction surface for the springs and supports the head to resist moments arising from axial misalignment of the expansion nozzle and mold assembly.

Abstract: An injection molding nozzle (1) for plastic with at least two outlet openings (2) facing toward different sides and directed oppositely is not constructed as an open injection molding nozzle but has a respective closure needle (5) in the outlet openings (2), and a drive is also provided for displacing the closure needles (5) at least into the closing position. Thus a cold plug at the end of the outlet openings (2) facing a mold (3) can be avoided, independently of whether the closure needles completely close these outlet openings (2) at their mouth (6) or still leave a minimum gap.

Abstract: A space 12 is formed at a tip portion of a nozzle 1 so as to decrease a thermal transfer of the nozzle 1. Alternatively, a center portion of one of a semi-spherically protruded surface of the tip portion of the nozzle 1 and a semi-spherically recessed surface of a sprue bush protrudes so that the radius of curvature of one semi-spherical surface is the same as the radius of curvature of the other semi-spherical surface. As a result, since the nozzle 1 and the sprue bush 2 are surface-contacted, heat of the tip portion of the nozzle 1 absorbed to the sprue bush 2 is increased. Thus, the temperature of the tip portion of the nozzle 1 can be lowered easily. After the resin material injected into the molding cavity 11 is cooled, when the sprue portion is removed from the fixed die, a tip portion of a rod-shaped protrusion portion of the sprue can be properly cut.

Abstract: A nozzle end is provided for removable mounting to a nozzle body for use in multiple-tipped molding applications such as edge-gated systems. The nozzle end is made of a highly thermally conductive material and is preferably inserted at least partially inside the forward end of the heated nozzle body. Removable nozzle tips are insertable in the front end of the nozzle end.