Abstract: Disclosed, amongst other things, is: (i) a pneumatic structure (160) for a post-mold device (15) comprising a control valve (162, 170, 172) configured to alternately pneumatically connect a holder (150) of the post-mold device (15) to one of: a first vacuum source (164) and a second vacuum source (166); (ii) a method of a post-mold device in a molding system, the method includes configuring the control valve (162, 170, 172) for alternately pneumatically connecting the holder (150) of the post-mold device between the first vacuum source 164 and to the second vacuum source (166); (iii) the post-mold device (15) including the holder (150) and the pneumatic structure (160); and (iv) a molding system (10) including the post-mold device (15) having the holder (150) and the pneumatic structure (160).

Abstract: A mold temperature adjusting apparatus is provided in which change-over timing of high temperature medium and low temperature medium is adjusted by a heat transmission delay in heating and cooling of a mold being taken into consideration, so that a cycle time of molding steps is shortened, a temperature deflection from a set temperature of the high temperature and low temperature medium is reduced, an energy loss is reduced and an optimal mold temperature for an injection step can be obtained.

Abstract: The invention relates to an installation and a method for producing glass stoppers which are provided with a head portion and are used for sealing wine bottles and sparkling wine bottles. Said installation comprises a mold for producing glass stoppers, a feeder system for supplying the mold with molten glass, a multistation press, and a removing and handling system for the finished glass stoppers.

Abstract: A hot runner molding manifold has a first half having flow grooves, a cover piece having flow grooves complementary to the flow grooves of the first half, and a second half securable to the first half and having a cavity for receiving the cover piece. The flow grooves of the first half and the cover piece form flow channels for distributing molten material from an inlet port to outlet ports. The cover piece is engaged with the first half, for example by welding, to reduce leakage of molten material out of the flow channels. Heater grooves in the first half, second half or both the first and second halves receive one or more heating elements for heating the flow channels.

Abstract: Tool insert for the initial cut of a hot-passage nozzle for an injection molding machine, which tool insert (10) accommodates the anterior (tool side) part of a nozzle and is insertable in turn in a suitably dimensioned recess (21) of the tool (20), which tool insert (10) consists of an anterior cylindrical fitted part (11) having a flow passage (11a) and a receiving head (12) for the tip of the nozzle. At least two cavities (chambers) (23) separated from each other are present between the outer wall (12a) of the receiving head (12) of the tool insert (10) and the wall of the recess (21) in the tool (20), one of which cavities (23) communicates with the supply passage (31) for a coolant, present in the tool, and the other cavity communicates with the discharge passage (32) for the coolant, present in the tool. Also, at least one flow connection is provided between the two cavities (23), preferably located as far as possible from the openings of the coolant passages (31, 32) in the tool.

Abstract: A cooling system for cooling sleeves (2) fixed to a carrier plate (1), by means of a fluid which is passed from a fluid inlet (15) to a fluid outlet (22) by way of fluid conduits (7, 14, 10, 11, 21) supported by means of the carrier plate (1). The fluid conduits (7, 14, 10, 11, 21) include main supply conduits (7) and supply conduits (10, 11) which extend approximately transversely with respect to each other. The supply conduits extend in a mutually parallel relationship and are arranged in pairs in the carrier plate (1) and are connected to a row of sleeves (2) by way of intake (16) and discharge conduits (17). The row of sleeves (2) is so disposed between the supply conduits (10, 11) of a pair such that each sleeve (2) is connected to both supply conduits (10, 11), and fluid communication is interrupted (plug 24) in at least the one supply conduit (10) of the pair substantially at the middle of its longitudinal extent (l).

Abstract: Disclosed is a preferred mold design for producing plastic, molded preforms, which may be blow-molded into a container of a final, desired shape. A preferred mold includes a temperature control system for maintaining the preform mold at a desired temperature. The temperature control system can pass fluid through channels within the preform mold to cool plastic that is injected into the preform mold. In some arrangements, a mold comprises a neck finish mold, the neck finish mold comprising high heat transfer material positioned to transfer heat away from melt within a mold cavity of the mold.

Abstract: A mold pair for molding a plastic container from a parison is provided. The mold pair has a first mold half and a second mold half. The first mold half has a cavity for forming the container, and a flash cooling system. The flash cooling system has a plurality of air distribution jets formed in the first mold half and for directing cooling air to a waste portion of the parison, and an air manifold formed in the first mold half and for directing the cooling air to the plurality of air distribution jets. The second mold half has a cavity for forming the container.

Abstract: The device includes: a runner block arranged at a position close to the injection port for resin material for secondary forming; and a slide core moved relatively with the runner block. In the runner block, a guide passage is formed which is communicated with a passage formed when pipe-shaped passages of the primary moldings are butted against each other. A heating medium passage or a resin material passage formed in the slide core are moved so that either the heating medium passage or the resin material passage can be selectively communicated with the guide passage formed in the runner block.

Abstract: A cooling tube assembly for operating on a malleable molded plastic part. The cooling tube assembly comprising a porous tube/insert having a profiled inner conditioning surface, and a vacuum structure configured to cooperate with the porous tube. In use, the vacuum develops a reduced pressure adjacent the inner conditioning surface to cause an outer surface of the malleable molded plastic part, locatable within the cooling tube assembly, to contact the inner conditioning surface of the porous insert so as to allow a substantial portion of the outer surface of the malleable part, upon cooling, to attain a profile substantially corresponding to the profile of the inner conditioning surface. The cooling tube assembly having a simplified cooling structure that includes a cooling channel configured on the porous insert, the surface of which include a surface treatment for a sealing thereof to substantially avoid a leakage of coolant therethrough.

Abstract: A molding system for molding a micro pattern structure includes a mold; a mold insert 6 having a micro pattern, the mold insert 6 being fixed to the mold; and a micro heating element 30 having a micro heater 32 between the mold and the mold insert 6, the micro heater 32 being formed in an integrated manner by using a MEMS process; wherein the amount of Joule's heat produced by the micro heater 32 is controlled by controlling the amount of electricity applied to the micro heater 32 so as to control a temperature of the mold insert 6.

Abstract: Coinjection molding shooting pot cooling apparatus and method are configured to cool a shooting pot cylinder which, in combination with a shooting pot piston, injects a melt through a coinjection nozzle having at least two melt channels ending at the same gate. Preferably, a heat sink sleeve is disposed to contact an outer surface of a rear portion of the shooting pot cylinder. The heat sink sleeve is configured to remove sufficient heat from the shooting pot cylinder to increase the viscosity of the melt therein, thus reducing melt leakage between the shooting pot piston and the shooting pot cylinder.

Abstract: A mold apparatus having at least a pair of molds formed with a cavity, at least one pipe accommodator formed in the molds, at least one heat pipe mounted in the pipe accommodator, a heat-cool source part connected to the heat pipe the heat and cool the heat pipe, and a controller to control the heat-cool source part to selectively heat and cool the heat pipe. Thus a mold apparatus to reduce a molding cycle and improve the quality of a molded product's appearance is provided.

Abstract: Platen-mounted, post-mold cooling apparatus and method includes structure and/or steps for handling molded parts in an injection molding machine having a fixed platen, a moving platen, a core half, and a cavity half. A take off device coupled to the fixed platen is configured to remove molded parts from either the core half or the cavity half. A cooling device coupled to the moving platen is configured to cool the molded parts carried by the take off device. Preferably, the take off device extracts the just molded parts from the mold's core half and then moves linearly outboard of the mold halves. The subsequent movement of the moving platen to close the mold in the next molding cycle causes the cooling device's pins to engage the molded parts in the take off device part carriers. When the moving platen opens again, the molded parts are extracted from the part carriers by the cooling device pins. When the moving platen is fully open, the cooling device is rotated to eject the cooled parts from the machine.

Abstract: An intimate fit preform cooling tube with an inner mating surface that includes a polymeric coating to increase its lubricity and thereby reduce friction with a preform to be engaged therewith. The cooling tube of the present invention substantially reduces or eliminates preform ovality and gate stretching problems.

Abstract: A metal workpiece is formed of a pre-manufactured lower part and an upper piece which is placed thereon using a metal powder sintering process, preferably laser sintering. The lower part is a partial workpiece which is made of a solid piece of metal shaped by machining, forming a ready-to-use workpiece in conjunction with the upper part.

Abstract: An improved thermal expansion compensation manifold support is disclosed. The support includes a spring having a barrel and a skirt extending from the barrel, the skirt forming a recess. The spring has a first shoulder extending into the recess, and an end opposite the barrel. The support also includes a block having opposite ends, a finger portion formed at one end and a second shoulder formed at the opposite end. The finger has an end opposite the second shoulder, with the finger being dimensioned and configured to be inserted into the skirt's recess. The skirt and the block are dimensioned and configured such that when the finger is inserted into the recess, the skirt end abuts against the second shoulder and the finger end is separated from the first shoulder by a gap.

Abstract: A cooling air system is provided for a patty-forming apparatus having a machine base that includes an enclosing wall and contains equipment within the machine base that generates heat, such as electric motors, electrical and control equipment. The machine base includes an air inlet opening and an air outlet opening through the enclosing wall. At least one air fan is arranged to move outside air from the air inlet opening to the air outlet opening. A first air damper is arranged to close the air inlet opening. A second air damper is arranged to close the air outlet opening. The first and second air dampers are configured to automatically close if power is interrupted to the apparatus. The dampers each includes a cover or plate and at least one inlet pneumatic cylinder that elevates the cover above the inlet or outlet opening when energized, allowing outside air to pass through the machine base.

Abstract: A cooling tube assembly for operating on a malleable molded plastic part. The cooling tube assembly comprising a porous tube/insert having a profiled inner conditioning surface, and a vacuum structure configured to cooperate with the porous tube. In use, the vacuum develops a reduced pressure adjacent the inner conditioning surface to cause an outer surface of the malleable molded plastic part, locatable within the cooling tube assembly, to contact the inner conditioning surface of the porous insert so as to allow a substantial portion of the outer surface of the malleable part, upon cooling, to attain a profile substantially corresponding to the profile of the inner conditioning surface. The cooling tube assembly further including a suction channel therein that is configured to cooperate with a valve member for the control of a suction flow therethrough that assists in a transferring of the molded article into the cooling tube assembly.

Abstract: A thick-film electric heater having thick-film layers applied directly on a thermally conductive non-flat substrate. Preferably, the substrate is cylindrically shaped. A dielectric layer is silk-screened on the substrate surface. A resistive layer is silk-screened on the dielectric layer to form a circuit for the generation of heat. The resistive layer has at least one resistive trace in a pattern that is discontinuous circumferentially. At least a pair of silk-screened contact pads are applied in electrical communication with the resistive layer for electrical connection to a power source. An insulation layer is applied over the resistive layer.

Abstract: A cooling circuit for a neck ring of a preform is conformed to the surface of the neck ring by providing a neck ring in two parts. The first part supports the neck ring and provides strength and durability to the neck ring insert. The second part is formed of porous steel impregnated with highly thermally conductive metal and includes a cooling channel that provides substantially uniform cooling around the neck ring of the preform.

Abstract: Disclosed herein is a load management device configured for a feed body of any one of a molding machine, a hot runner assembly and any combination thereof. The load management device includes a load-transferring body configured to present a load-receiving surface and a load-imparting surface. The load-transferring body is configured to connect the load-receiving surface with the load-imparting surface, to transfer a substantial amount of load-received by the load-receiving surface over to the load-imparting surface, and to transfer an in-substantial amount of load-received by the load-receiving surface over to the feed body.

Abstract: A gate insert (10, 110) for a stack assembly in an injection molding machine having a gate (16, 116) through which a melt of thermoplastics material enters a mold cavity (14, 114). The gate insert has a cooling channel (18, 118) surrounding, and substantially uniformly spaced from, the gate (16, 116). The cooling channel has an inner surface with a profile substantially parallel to the gate. The cooling channel is further defined by a two-piece gate insert having interconnecting surfaces (111a, 111b).

Abstract: A method and apparatus for controlling the temperature of an injection mold passes pressurized air contained in an air supply tube through an orifice into an exhaust channel, wherein the pressure of the air in the exhaust channel is lower than the pressure of the air in the air supply tube. As the pressurized air is released through the orifice, cooling is produced that can be applied to a portion of an injection mold where cooling is desired, in order to control the temperature of that portion of the injection mold.

Abstract: A Bi-directional rack assembly that rotates one column of threaded cores and unscrews threaded closures while moving in the forward direction. The Bi-directional rack then mechanically changes position to engage an adjacent column of rotating threaded cores and at the end of a second molding cycle rotates the threaded cores and unscrew threaded closures while moving in the reverse (reset) direction. A set of timed-advance devices are engaged by a smaller pinion gear and idler gear assemblies to the Bi-directional rack and as the Timed-Advance devices are activated, they allow pneumatic pistons to advance the stripper plate in time with the threaded closures as they are being unscrewed from the threaded cores. A second “rapid advance” pneumatic piston eliminates the need for an external rapid rise camming feature. A rotating core comprising a stock, rotating core, a stock water-seal insert and a custom core top.

Abstract: Disclosed are an apparatus, materials, devices and methods for the use of a variety of thermoplastic resins in fabricating dental prostheses without the use of expensive hot-press equipment unavailable to most dental laboratories. The prostheses made by the process and materials disclosed herein provide more attractive and longer lasting prostheses with significant savings in both costs and materials. Among the aims of the technology disclosed is to save time and money for the dental industry (dentists, dental labs) and the dental consumer/patient.

Abstract: A device (1) for cooling and/or thermal conditioning of hot preforms or parisons (6), in particular of parisons for the production of blow-moulded bottles made of plastic material, limits and/or reduces the deformations of said parisons during cooling by containing the transverse deformations of the end close to the opening (8) of the parison. The device is provided with a tubular portion of prolongation which wraps totally around the parison that rests on its internal surface with one of its sections (9). Described herein is the corresponding method for cooling the parison (6).

Abstract: Disclosed is an extrusion mandrel fastener (2) that is embodied as a two-piece unit comprising a supporting beam (4) and a holding beam (5) which can be joined together and are provided with semi-cylindrical recesses (7, 8) complementing each other so as to form cylindrical recesses (9). An extrusion mandrel (3) is inserted into each cylindrical recess (9) and is retained therein. The extrusion mandrel fastener (2) and the extrusion mandrels (3) are provided with ducts (13, 14, 15, 16, 24, 25) which allow fluid circulation so as to temper the extrusion mandrels (3) and communicate with each other as well as with openings (11, 26) that are disposed on the extrusion mandrel fastener (2) via cylindrical connecting sleeves (30). Said connecting sleeves (30) are preferably sealed by means of sealing rings and fix the extrusion mandrel (3) to the extrusion mandrel fastener (2).

Abstract: An arrangement to assist in heat transfer through a mold for applications such as injection molding of plastics material including at least one closed chamber within the mold, the chamber being only partially filled with liquid and a remainder of the chamber being filled with substantially only vapor of the liquid within the chamber, at least a portion of the chamber being positioned to transmit heat from a targeted location of the mold into liquid within the chamber, and condensing means adapted by reason of heat exchange to effect condensation of vapor within the chamber, the mold being arranged in that the liquid such as water is arranged to be held in the chamber in such a way that the liquid will be distributed to reach or be held at different heights within the chamber. This is achieved in one case by the addition of a foaming agent in the liquid. In another case by having a flock attached to the inner surface of the chamber.

Abstract: An injection molding apparatus comprises a manifold having a manifold channel for receiving a melt stream of moldable material under pressure. A nozzle having a nozzle channel receives the melt stream from the manifold channel and delivers the melt stream through a mold gate to a mold cavity. The nozzle includes a nozzle head, a nozzle body and a nozzle tip. A heat dissipation device is coupled to the nozzle body at a location between the nozzle head and the nozzle tip to regulate the temperature of the nozzle and maintain it within a predetermined temperature range.

Abstract: A mold portion of a molding tool for making plastic articles includes a base body defining a cavity surface and having formed therein at least one heating channel, and at least one cooling channel separated from the heating channel and having a cross section which is smaller than a cross section of the heating channel. The cooling channel is positioned hereby closer to the cavity surface than the heat channel and thus is in an area between the heat channel and the cavity surface, thereby defining a cavity-proximal cooling channel and a cavity-distal heat channel. Before the injection process, the cavity surface is heated by the heat channel to a higher temperature than the demolding temperature of the plastic article to be formed. At the end of the injection process, the cavity surface is cooled by the cooling system.

Abstract: An injection mold includes a sliding member having a partial cavity surface which forms part of a cavity surface, and an adjacent member having a partial cavity surface which forms part of the cavity surface. A sliding surface of the sliding member is guided by a sliding surface of the adjacent member and is linearly movable by a relative sliding distance. A portion from the partial cavity surface to the sliding surface of at least one of the sliding member and adjacent member is continuously coated with a heat insulating coat, and a range over which the sliding surface is coated with the heat insulating coat is so set as to exceed an end of the relative sliding distance, where an edge of the partial cavity surface of the adjacent member contacts with the sliding surface of the sliding member.

Abstract: An injection molding apparatus comprising a hot runner manifold, a heater coupled to the manifold and a heat dissipation device coupled to said manifold, wherein said heat dissipation device reduces hot spots on said manifold caused by uneven heating.

Abstract: Platen-mounted, post-mold cooling apparatus and method includes structure and/or steps for handling molded parts in an injection molding machine having a fixed platen, a moving platen, a core half, and a cavity half. A take off device coupled to the fixed platen is configured to remove molded parts from either the core half or the cavity half. A cooling device coupled to the moving platen is configured to cool the molded parts carried by the take off device. Preferably, the take off device extracts the just molded parts from the mold's core half and then moves linearly outboard of the mold halves. The subsequent movement of the moving platen to close the mold in the next molding cycle causes the cooling device's pins to engage the molded parts in the take off device part carriers. When the moving platen opens again, the molded parts are extracted from the part carriers by the cooling device pins. When the moving platen is fully open, the cooling device is rotated to eject the cooled parts from the machine.

Abstract: A gate insert (10, 110) for a stack assembly in an injection molding machine having a gate (16, 116) through which a melt of thermoplastics material enters a mold cavity (14, 114). The gate insert has a cooling channel (18, 118) surrounding, and substantially uniformly spaced from, the gate (16, 116). The cooling channel has an inner surface with a profile substantially parallel to the gate. The cooling channel is further defined by either a structural insert in the form of a split ring (30) or by a recess (23) in a two-piece gate insert having interconnecting surfaces (111a, 111b).

Abstract: A mold temperature control unit with which piping connection for supply and drain of cooling water in unit setup can be extremely simply made. In a mold temperature control unit 1 which unit body 2 comprises a plurality of cooling water systems performing supply and drain of cooling water to/from a plurality of elements to be cooled in a mold, a single cooling water supply port 11 and a single cooling water drain port 12 for said plurality of cooling water systems are disposed on the outer panel of the unit body 2.

Abstract: A foam-in-place apparatus includes a foam containment unit, a foam precursor storage unit, and a foam precursor heating unit, in one embodiment. During operation, the foam precursor heating unit is activated to provide activation heat to one or more foam precursor components stored within the foam precursor storage unit. The activation heat may cause temperatures of one or more of the foam precursor components to increase to temperatures within an activation temperature range. The pre-heated component or components are combined to produce an expansive foam, which is deployed in the foam containment unit, and which causes the foam containment unit to expand and displace or contour around any physical objects within the expansion limits of the foam containment unit.

Abstract: The invention relates to a device for melting and conveying material such as plastic or metal. Said device comprises a conveying channel, which contains an admission opening for the material as well as a discharge opening for the at least partially melted material. The device also comprises heating devices that, between the admission opening and discharge opening, heat the conveying channel and/or the material, and comprises a slide that can move to-and-fro while conveying the material from the admission opening to the discharge opening. According to the invention, the conveying channel is provided with a tubular shape and with two walls and has an inner tube and an outer tube. The slide is provided as a sliding sleeve, which is placed between the inner tube and the outer tube, and is provided in two pieces. In addition, said slide comprises a closing sleeve for opening or closing the conveying channel and comprises a conveying sleeve that can be moved independent of the closing sleeve.

Abstract: Post mold cooling apparatus and method having transverse movement preferably includes structure and/or steps for cooling a plurality of plastic articles molded on a row of mold cores. A post mold cooling device is provided having (i) a first row of cooling tubes configured to hold a first plurality of the molded plastic articles, and (ii) a second row of cooling tubes configured to hold a second plurality of the molded plastic articles. A cooling station is disposed adjacent the cooling device and is configured to provide a cooling fluid to an interior of both the first and second pluralities of molded articles inside the respective first and second rows of cooling tubes.

Abstract: The invention relates to a molten material processing device having an elongated thermal element like a heating element, a thermocouple, a sensor, a heatpipe and a cooling pipe which is characterised in that said elongated thermal element (2) is located in a recess (3) provided in a surface (6) of the molten material processing device (1), the recess (3), comprising a first portion (4) and a second portion (5), has a cross-section which is larger than a cross-section of the thermal element (2), so as to provide a clear space (7) between the thermal element (2) and the surface (6) of the processing device (1), the clear space (7) which is limited by the first portion (4) and the thermal element (2) is filled by a thermally sprayed material (8) and the second portion (5), which is adapted to the cross-section of the thermal element (2), partially surrounds and directly contacts same.

Abstract: The present invention relates to an apparatus for producing solid active ingredient-containing forms from an active ingredient-containing formulation which comprises at least one polymeric binder. The apparatus according to the invention has at least one extruder 1 for continuous plastication of the formulation and at least two injection units 2 which are provided separate from one another, each of which is connected to the extruder 1, and through which the formulation can be injected into at least one mold 3.

Abstract: Post mold cooling apparatus and method having transverse movement preferably includes structure and/or steps for cooling a plurality of plastic articles molded on a row of mold cores. A post mold cooling device is provided having (i) a first row of cooling tubes configured to hold a first plurality of the molded plastic articles, and (ii) a second row of cooling tubes configured to hold a second plurality of the molded plastic articles. A cooling station is disposed adjacent the cooling device and is configured to provide a cooling fluid to an interior of both the first and second pluralities of molded articles inside the respective first and second rows of cooling tubes.

Abstract: Method and apparatus for cooling molded plastic pieces preferably includes a take out structure/step configured to hold the plurality of plastic parts oriented such that closed ends thereof are disposed toward an inside of the take out structure and open ends thereof are disposed toward an outside of the take out structure. A movement structure/step is configured to cause relative movement between the take out structure and at least one of a first cooling station and a second cooling station. The first cooling station includes a first cooling structure/step configured to provide a cooling fluid to an inside of the plurality of plastic parts through the open ends thereof. The second cooling station includes a second cooling structure/step configured to provide a cooling fluid to an inside of the plurality of plastic parts through the open ends thereof.

Abstract: A form, fill and seal packaging machine for forming, filling and sealing a carton, molds a closure directly onto the carton. The machine includes a carton erection station adapted to receive a carton in a generally flat form and to erect the flat form carton into a tubular form defining an internal carton region. A direct injection molding station has an internal mold tool and an external mold tool. The internal mold tool is configured for receipt within the internal carton region and the internal mold tool and the external mold tool are configured to receive and clamp the carton therebetween. The direct injection molding station further includes a polymer injection system for injecting polymer from a location external of the carton to the internal mold tool. The closure is directly molded in place on the carton. A mold tool set, a method for carrying out the molding and a closure molded thereby are also disclosed.

Abstract: A method and apparatus for handling preforms from an injection molding machine whereby an array of molded articles received from the mold is reconfigured into a single row to assist in downstream auxiliary processing.

Abstract: An injection molding apparatus comprises a manifold having a manifold channel for receiving a melt stream of molten material under pressure and delivering the melt stream to a nozzle channel of a nozzle. A mold cavity receives the melt stream from the nozzle and the nozzle channel communicates with the mold cavity through a mold gate. A thermocouple is coupled to the mold core of the mold cavity in order to measure the temperature of the molten material in the mold cavity.

Abstract: There is provided an arrangement of a mold including a mold base (1), a cavity block (2) provided within the mold base (1), a heat insulating layer (5) provided between the mold base (1) and the cavity block (2), and a system of a flow passage (A) through which a heating medium and a cooling medium are alternately and repeatedly supplied, wherein a space is provided at a contact portion between the cavity block (2) and the mold base (1) based on anticipation of a thermal expansion of the cavity block (2). Further, the cavity block (2) may be arranged to have inlet and outlet slots communicating with the channel (A), and the inlet and outlet slots may be attached with conduits thermally insulated from the mold base (1).

Abstract: Holographic lines are formed directly on products by holding a holographic plate and a block under a lip on a frame and mounting the frame for limited movement within a recess in a mold half. As a mold cavity is filled, the frame, block and plate and heating tubes connected to the block move in the recess. As the product sets, springs push the frame, block and plate toward the shrinking product controlling the fine holographic lines. Lateral frame recesses receive bolt ends to limit frame travel. Partially withdrawing bolts and removing the tubes releases the frame for withdrawing the block and replacing the holographic plate.

Abstract: An insert is held in a cavity within a die set by a movable hold member. Molten resin is injected into the cavity when the insert is held by the hold member. The hold member is separated from the insert at a given timing. A surface of the hold member is heated to a temperature higher than a temperature of an inner surface of the die set. The hold-member surface contacts the molten resin. The die-set inner surface is exposed in the cavity.

Abstract: An injection-molded plastic part cooling tube has an extruded cylindrically shaped tube with an inside surface and an outside surface. An extruded cooling channel is disposed inside the cylindrically shaped tube, between the inside surface and the outside surface. A method for forming an injection-molded-plastic-part cooling tube includes the step of extruding a hollow aluminum tube having an inside surface, an outside surface, and at least one cooling channel in the hollow aluminum tube between the inside surface and the outside surface. Alternative cooling tubes include a tubular porous insert for vacuum forming molded articles.