Abstract: A method and a mold used with this method for manufacturing cast spray diffusers is described in which, in order to prevent an expensive reworking of important corners and edges, the molded parts are formed is such a way that mold parting planes are moved out of these critical areas. In particular, the transitional area between a rotationally symmetric swirl chamber of a spray diffuser in the narrow mouthpiece channel and the outlet edge of the mouthpiece are each placed in one-piece molded parts that abut against these adjacent molded parts outside these areas.

Abstract: In order to manufacture a discharging roller which discharges a recording medium from a recording apparatus, there are a first die formed with a first recess extending in an axial direction of a shaft portion of the discharging roller, and a second die formed with a second recess extending in the axial direction. The first die and the second die are combined such that the first recess and the second recess face to form a continuous cavity. Synthetic resin is injected into the cavity to mold a bore portion of the shaft portion.

Abstract: A radioactive member for use in brachytherapy comprising a molded elongate, bioabsorbable carrier material with spaced radioactive sources disposed therein, and methods for the manufacture thereof. The radioactive members may be used in treatment of, for example, prostate cancer.

Abstract: The present invention is a method and system of marking data media products by introducing a predetermined tracing substance constituting a security marking into a polycarbonate (or polystyrene) composition during the manufacturing stages of the polycarbonate material into a data media, such as a compact disc (CD) or digital versatile disc (DVD). This marking technique is useful in tracking pirated data and/or sources, such as CDs or DVDs, to thereby prevent future pirating of data. Using mass spectrometry, specific types and/or quantities of isotopes of each tracing substance, on a structural level, are used to indicate a specific marking and product identity characteristics, such as a specific lot number, batch number, manufacturer identity, shipping date and the like. The security marking is preferably invisible to the naked eye. The security marking technique is also useful for tracking, authenticating and quality control purposes.

Abstract: The invention relates to a matrix suitable for use in the replication of a plastic element having a positive microstructure, comprising a first wear-resistant layer that is supported by a carrier element, wherein the matrix comprises a heating means for supplying electrical heat energy through the wear-resistant layer or carrier element. The invention further relates to a plastic element producing machine and a method for the manufacture of a plastic element having a surface with a positive microstructure.

Abstract: A metal mold 110 is prepared, which has a gate 120, a cavity 134 in which a virtual curve L1 is formed, which forms at least a welding target part of a laser beam transmitting member along the virtual curve L1, and in which a filling terminal wall 134b is formed along a curve L2 parallel to the virtual curve L1, and a throttle part 132b for reducing the flow of a resin flowing from the gate 120 toward the cavity 134, which is connected to the cavity 134, and whose connection boundary B1 is formed along a curve L3 parallel to the virtual curve L1. Then, a resin is injected into the gate 120 and a crystalline laser beam transmitting member is molded out of the injected resin using the metal mold 110.

Abstract: An injection-molding machine is disclosed. The machine has an injection unit and nozzle and the injection unit includes a tubular cylinder and a screw that is capable of back and forth movements along the tubular cylinder. Means are provided to stop the movement of the screw at its end/stop position at a distance from the nozzle so as to form a gap between the screw head and nozzle. The gap has a volume of more than π 4 · D 3 and up to the volume of a shot wherein D is the dimension of a single screw stroke. The use of the machine yields molded articles that are virtually streak free.

Abstract: An apparatus and method for holding a mold assembly and molding an optical lens using the same. In one aspect, the present invention provides an apparatus for holding a mold assembly, wherein the mold assembly includes a front mold, a back mold and a strip wrapping around the edges of the front mold and back mold to form a sleeve. In one embodiment, the apparatus includes a first portion and a second portion. The first portion has a top part, a bottom part, and a middle part connecting the top part and the bottom part, the middle part including a base and a holder coupled to the base. The second portion has a top part, a bottom part, and a middle part connecting the top part and the bottom part, the middle part including a base and a holder coupled to the base.

Abstract: Shape information of a molded article is used to determine cross sectional information. Injection speed pattern data is generated based on parameter information such as the cross sectional area of a barrel cylinder, the filling time interval, the injection stroke, etc., and the generated cross sectional information. The injection speed pattern data is used to control the injection speed of the injection screw.

Abstract: Adjustable pin mold systems are provided, which include features specifically suited for injection molding of foamed polymers and for high-pressure injection molding of plastics.

Abstract: In an injection mold comprising a stationary and a movable mold half for opening and closing the injection mold, an electronic data storage with a counter for detecting and retrievably recording the number of injection molding procedures and the number of closing movements of the mold halves in the data storage is provided and the data storage is removably mounted on the injection mold and, furthermore, a sensor is provided for recording the mounting state of the data storage and also a time recording element for determining any time period for which the data storage was removed from the data storage.

Abstract: The present invention is directed to flexible elastomeric tools for producing thermoplastic devices, particularly fluidics and microfluidics devices, and improved methods for fabricating such devices.

Abstract: In one embodiment, a microreplication tool includes gas release features that allow gas to escape from microreplication cavities of the tool. The gas release features can be disposed at the bottoms of the respective cavities to avoid air entrapment within the cavities of the tool during the microreplication process. In this manner, the quality of the microreplicated product can be improved.

Abstract: This invention consists of a new cost effective injection molding apparatus for molding with hot melt adhesives and other Polyamide materials. Manufactured from standard tubing components in a double “L” or “C” design, it has fewer moving parts than other molding machines therefore requiring less maintenance. It is specifically designed to not require the use of temperature limiting and maintenance prone heated hoses for transport of melted material or sliding injection nozzles for engagement into mold-set by utilizing a substantially fixed injection nozzle. It incorporates a sell-draining melt reservoir with single-side mounting to allow for heat expansion and has very short material transfer distance from reservoir to mold-set. It can utilize permanent nozzle engagement into the mold-set to simplify molding operation and reduce cost. It incorporates several safety features to protect operators against injuries.

Abstract: A method of producing a plastic product having a microstructured surface (3a), utilizing an arrangement for moulding plastic products. Said arrangement has at least two mould parts (2, 3) movable towards and away from each other, a predetermined volume of a viscous polymerizable plastic material (9) being supplied to a cavity formed between the mould parts, after which polymerization of the plastic material occurs. After said polymerization of the plastic material (9′), the mould parts are caused to move apart from each other thereby allowing removal of a finished plastic product the outer shape of which conforms to the shape of the cavity produced by the mould parts. Said viscous polymerizable plastic material (9) is supplied to the cavity (6) around a hole (10a) pertaining to the finished plastic product, and said viscous plastic material is distributed in a direction from said hole (10a) towards the peripheral edge area of the plastic product.

Abstract: A method and a system is provided for producing a needle of plastic, as well as a needle of plastic, in particular a needle for medical purposes. The method produces a needle having at least the outer diameter of one end being less than 0.50 mm using a moulding system having an assembly comprising a feed system and a mould cavity. The method includes introducing a melt of plastic into the feed system, increasing the melt pressure gradually during melt passage through the feed system, passing the melt into the mould cavity whereby the melt substantially fills the mould cavity, cooling the melt in the mould cavity whereby the melt solidifies to a needle, and removing the needle from the mould cavity.

Abstract: A method of fabricating a graded index plastics material optical fiber whose refractive index varies between its center and its periphery comprises the following process steps: preparing at least two liquid compositions with different refractive indices, each composition comprising at least one polymer, a substance to vary the refractive index being present in at least one composition and a cross-linking starter being present in at least one composition, filling a preform formation system with the compositions, producing a liquid preform in the system, the refractive index of said preform having a given gradient, and drawing the preform to obtain a graded index plastics material optical fiber. The production of the preform comprises a step with substantially no flow of the compositions along the system.

Abstract: An apparatus in which a pair of hollow molding portions 53 and 54 for molding in which a terminal connecting portion with a terminal fitting 20 crimped onto a conductor 11 at a tip portion of a sheathed wire 10 is accommodated and set are provided inside a mold 50 made up by an upper mold 51 and a lower mold 52, a molding resin 30 in a molten state being injected and poured into the molding portions 53 and 54 to cover and mold the terminal connecting portion so as to provide waterproofing, the terminal connecting portion subjected to covering and molding being released from the mold so as to be removed outside the mold. A casting surface of the molding portion 53 of the upper mold 51 is provided with a gradient or a curvature for facilitating the release of the terminal connecting portion subjected to covering and molding from the mold, whereby the terminal connecting portion subjected to covering and molding remains in the molding portion 54 of the lower mold 52 during mold releasing.

Abstract: The invention relates to a method of making retroreflective sheeting and other articles prepared from casting a moldable synthetic resin onto a tool having a microstructured surface.

Abstract: The invention relates to a method and a device for producing an electric insulator (1) made of plastic comprising a central hollow core (2) in addition to a plurality of insulating screens (3) which are arranged in a coaxial manner around the hollow core (2) and which are disposed in the axial direction of said hollow core (2).

Abstract: The invention relates to a secondary part for a motor, comprising at least one carrier element (10) and several permanent magnets (12) and a cast body made of plastic, whereby the permanent magnets (12) are cast therein. According to the invention, the cast body is made of thermoplastic material. According to the inventive method, the cast body is produced in a molding tool (110, 130) of an injection molding machine. Positioning elements (140) are provided in the molding tool (130) in order to fix the permanent magnets (12) on the carrier element (10). The positioning elements are withdrawn from the cavity of the molding tool after the first filling phase. The thus resulting voids are filled in a second filling phase.

Abstract: An apparatus for the injection molding of plastic material, comprising a mold (7) into which molten plastic material is introduced, wherein there is provided a device for introducing liquid, in particular water, into the interior of the molten material, which includes a pump (3) driven by a motor (4), wherein the speed of rotation of the motor (4) and/or the stroke volume of the pump (3) is variable.

Abstract: The present invention is directed to molds for making packaging inserts having a pre-selected shape and a method of making the same. The shape of the mold is determined by first pre-selecting the shape of the packing insert. The shape of the packaging insert is dependent on the type of product that will be shipped. Once the shape of the packing insert is determined, the mold is then made by fabricating multiple parts, each part having a pre-selected shape. The shape of each part of the mold is determined such that when the mold is assembled, the mold forms a contiguous inner cavity having the shape (the inner cavity is the negative) of the pre-selected packaging insert. After the mold is assembled, beaded foam material is injected into the mold to form the packaging insert.

Abstract: A process for controlling the shrinkage behavior during the original shaping of plastics during the manufacture of a plastic shell, especially a bearing shell for a ball-and-socket joint, wherein liquefied plastic is introduced between an inner mold (3) and an outer mold (2) in order to be cured therein, wherein the plastic is partially fixed on the outer mold (2) during the curing. This process can be preferably used in a device for controlling the shrinkage behavior during the original shaping of plastics, which has a casting mold, which accommodates at least one outer mold (2) and an inner mold (3) inserted into same, wherein the liquefied plastic (1) to be molded can be introduced between the mold parts (2, 3), wherein means for fixing the liquid plastic (1) are formed on the outer mold (2).

Abstract: A pressure detecting apparatus is composed of a first case insert-molded with connector pins, and a second case made of metal. The first case and the second case are assembled together to form a pressure detection chamber hermetically sealed with an O-shaped ring sandwiched between seal surfaces of the two cases. The first case is formed by using a molding die that has a gate for injecting resin approximately in parallel with a seal correspondence surface for forming the seal surface of the first case.

Abstract: A compact disc (CD) molding apparatus. The CD molding apparatus comprises a movable mold, a fixed mold, a mold cavity, an outer ring, a gas passage, an outlet and an auxiliary gas channel. The movable mold is disposed adjacent to the fixed mold. The mold cavity is defined between the movable mold and the fixed mold. The outer ring surrounds the mold cavity, and the outlet is defined between the fixed mold and the outer ring. The gas passage is defined between the fixed mold and the outer ring and connects the mold cavity and the outlet. Particularly, the auxiliary gas channel is disposed in the fixed mold and connected to the gas passage to facilitate exhaust of high temperature gas from the mold cavity, wherein a material is injected into the mold cavity and the high temperature gas passes through the gas passage before exiting through the outlet.

Abstract: A method of fabricating a stamping mold suitable for use in the formation of a tapered waveguide structure includes defining a stamping pattern upon the surface of a silicon wafer, and removing portions of the silicon wafer surface in accordance with the stamped pattern, thereby creating tapered vertical surfaces within the wafer.

Abstract: An insert retention apparatus for use with an insert mold tool includes an actuator having a power system, a drive assembly and a control unit. The retention apparatus also includes an insert mold tool and a retention post operably connected to the drive assembly of the actuator. The retention post is preferably configured for movement through the insert mold tool between a first position wherein the retention post engages and maintains a stamping in fixed position within the insert mold tool while a liquid resin is injected into the insert mold tool to a second position wherein the retention post is disengaged and moved relative to the stamping prior to the resin completely curing. The invention also relates to a method of forming an overmold on a stamping.

Abstract: Methods and devices for manufacturing a conduit for placing a target vessel in fluid communication with a source of blood, such as a heart chamber containing blood. The conduit includes first and second portion adapted to be placed in fluid communication with a heart chamber and a target vessel. The conduit lies on the exterior of the myocardium between the blood source and the target vessel and delivers blood in multiple directions within the lumen of the target vessel. The conduit, which may be formed of any suitable synthetic vascular graft material, is generally T-shaped with the leg having two free ends disposed in the target vessel, preferably being secured thereto via a suture-free attachment. The conduit comprises vascular graft material and may be manufactured various ways, such as molding a conduit from any suitable biocompatible material or fabricating a conduit from one or more pieces of vascular graft material.

Abstract: A vehicular lamp and injection mold and manufacturing method for lamp bodies for producing a plurality of different types of vehicular lamps while resulting in a reduced cost of manufacturing due to sharing of a common injection mold. A lamp body of a tail lamp, for example, includes a reflective surface for reflecting light from a light source bulb forward and is formed with a bulb attachment hole for mounting the light source bulb constituted by an insert-molded surface. That is, part of a reflective surface of the lamp body is formed by an insert-molded surface molded with a cavity surface of an insert constituting a part of a fixed mold of an injection mold. To change to molding a different type of lamp body, it is only necessary to change the insert.

Abstract: The present invention relates to a method for the manufacture of a matrix and to a matrix (1) thus manufactured, at least one surface section (2) displaying a microstructure, which matrix (3) is suitable for inclusion as a mould insert in a mould cavity or in a cavity, in a unit producing plastic components, in order to assign said plastic components an opposing micostructure in a corresponding surface section. An original (3) with a surface section (4) displaying a microstructure less than 500 &mgr;m is used in order to apply on this original layer upon layer of a material (11, 12, 13, 14) and/or mixtures of material producing a matrix, and thereafter the matrix (1) is removed from said original (3) or the material in the original is removed.

Abstract: A hollow thermoplastic synthetic polymer filament carpet yarn includes a core portion having N number (typically, three or four) lobes joined thereto. Stiffening ribs are formed in the core portion. The stiffening ribs cooperate to define at least N hollow regions in the core portion. The hollow regions may communicate or be isolated from each other. Each lobe has at least one transverse-stiffening web therein that prevents the lobe lateral edges from being deformed towards the exterior of the filament. The major portion of each lateral edge of each lobe may be substantially linear or convexly curved over substantially its entire length.

Abstract: An obstetrical vacuum extractor having a vacuum cup molded of a first, relatively rigid material, with a lip of a second, relatively soft material secured along the basal opening. An elongated hollow stem which may be coupled to a vacuum source communicates with the interior and, accordingly, the basal opening of the vacuum cup. The first, relatively rigid material of the cup is preferably substantially transparent so that the physician may readily monitor the condition of the fetal scalp throughout delivery.

Abstract: A method of manufacturing a honeycomb extrusion die has the steps of: preparing a die base metal in which a plurality of intersecting slits are arranged in a front surface thereof and a plurality of raw material feeding holes communicated with the slits are arranged in a back surface thereof; forming a plating layer on the die base metal by means of electrolytic plating; (1) and forming a TiCN layer on the plating layer by means of CVD (chemical vapor deposition); or (2) forming a TiN layer on the plating layer by means of CVD (chemical vapor deposition); and forming a TiCN layer on the TiN layer by means of CVD. In this manner, the honeycomb extrusion die is obtained.

Abstract: According to the present invention, a manifold mounting arrangement is provided wherein a leg manifold is securely mounted midway along its length rather than at its sprue bushing and whereby thermally induced length changes are accommodated outwardly from its centre. Additionally, a first end of the leg manifold is clampingly secured between a sprue housing and a manifold insulator to avoid movement of the first end toward the sprue upon a sprue break portion of the injection moulding cycle.

Abstract: The invention provides a method for making a pipe coupling which comprises a body portion including a socket (9) and an internal seal (43) located within said socket and which is for making sealing contact with the pipe end received in the socket. The method comprises, in a first stage, injection moulding the body portion using a first internal core and, in a second stage, injection moulding the seal within the socket using a second internal core. Seal material is injected in molten form through the wall of the body portion to a space defined by the body portion and said second core. Apparatus for carrying out the method is also provided.

Abstract: In order to eliminate post-molding mounting of a bulb 3 and a terminals 7 using a socket, when molding of a side turn signal blinker 1 in a manner of die slide injection, a process to mount the bulb 3 and the terminals 7 to a housing 4 is provided between a process to separate a first and second dies 9 and 10 from each other, which has carried out a primary injection molding of a lens portion 2 and the housing 4 as semi-finished products, and a process in which the dies are slid, the lens portion 2 and the housing 4 are butted and the secondary injection is carried out; thereby post-molding mounting of the bulb and the terminals is eliminated and the side turn signal blinker 1 in which the bulb 3 and the terminals 7 have been inserted, is obtained.

Abstract: The device serves for the blow molding of containers that comprise a thermoplastic material, wherein the device has at least one blowing station with at least one blow mold. The blow mold is formed from at least two blow mold segments that are supported by supports, wherein the blow mold has a base extension. The base extension is arranged in such a way that it is capable of being positioned in the direction of a longitudinal axis of the blow mold, and is supported by a base plate. The base plate connects the base extension to a positioning device. The base plate is additionally connected to the base extension by a profiled coupling section, wherein this profiled coupling section is formed from a coupling element, which is connected to the base plate, along with a counter element that is connected to the base extension. The profiled coupling section is capable of being actuated via a manual lever.

Abstract: This invention aims at preventing a peeling phenomenon occurring on the surface of a foamed product. In order to achieve this object, an injection-molded product formed in accordance with injection molding by mixing a foaming agent in a molding resin material, is formed by molding using a mold having a heat insulating material on a surface of its cavity forward in a moving direction of a portion where the molding resin material molten and injected for forming the molded product has an injection speed of at least 1.5 m/sec to 2,000 m/sec in the cavity of the mold.

Abstract: An injection molded resin gear 1 has a rim 6 having teeth 7 on its outer periphery, a hub 4 for receiving therein a shaft, and a web 6 connecting the rim 6 to the hub 4. The thickness (t1) of the bottom 15 of the rim 6 is smaller than the thickness (t2) of the web 5. On the side faces 8 and 8 of the web 5, annular circumferential ribs 10, 11 and 12 protruding concentrically with the rim 6 and hub 4 are formed. The relationship between the thickness (t1) of the bottom 15 of the rim 6, the thickness (t2) of the web 5 and the thickness (t3) of the circumferential rib 12 is t1≦t3<t2.

Abstract: It is an object of this invention to provide an injection mold having high durability because a heat insulating coat with which at least one of a sliding member and an adjacent member for guiding the sliding member is coated has a high peeling resistance. To achieve this object, the injection mold has an adjacent member and sliding member adjacent to each other. A sliding surface of the sliding member is slidably guided by a sliding surface of the adjacent member such that a partial cavity surface of the sliding member protrudes into the cavity by a relative sliding distance from the state in which this partial cavity surface is leveled with that partial cavity surface of the adjacent member, which forms part of the cavity surface. A portion from the partial cavity surface to the sliding surface of the sliding member is continuously coated with a heat insulating coat. The range over which the sliding surface is coated with the heat insulating coat is so set as to exceed the relative sliding distance.

Abstract: Disclosed are systems and methods for casting, handling, or storing assay matrices. In one embodiment, an assay matrix casting system comprises a gel matrix frame sandwiched between two films, forming a “gel matrix mold,” two plates sandwiching the gel matrix mold, one or more devices for delivering gel material into a chamber formed by the gel matrix mold, and a device for pressing the plates toward each other. An assay matrix is cast by applying pressure to the, injecting a liquid gel material into the chamber of the gel matrix mold, and allowing the gel material to form a gel matrix inside the chamber. The gel matrix may be handled or stored using the gel matrix mold, which is removable from the other components of the gel casting system.

Abstract: An injection molding apparatus is disclosed that includes an injection mold, a mold injector, and means for monitoring the injection mold process using acoustic energy. The injection mold includes a cavity for receiving an injection mold material, such as a polymer as injected via the mold injector. The monitoring system includes an acoustic energy generator, an ultrasonic crystal, and an energy monitoring device. The acoustic energy generator produces continuous acoustic energy to be non-invasively applied to the injection mold as the polymer is delivered into the mold. The energy monitoring device monitors changes in dynamic parameters of a resulting continuous resonant frequency established by the acoustic energy generator through the ultrasonic crystal. The ultrasonic crystal serves also as a transducer to receive an output signal from the mold to be delivered to the energy monitoring device.

Abstract: An injection-moulding tool (10) for the production of mouldings in disc form, in particular in the form of information carriers such as CDs and/or DVDs, which injection-moulding tool (10), to form an injection mould (25), includes a first and a second mirror block (11 and 12, respectively), which lie opposite each other and are movable in relation to each other for the opening and closing of the mould, and also a form ring (20), which concentrically encloses the first mirror block (11) and closes off the injection mould (25) towards the outer edge and is movable in relation to the first mirror block (11), better process stability, better quality of the mouldings and shorter waiting times during starting-up are achieved, inter alia, by facilities for active temperature control of the form ring (20) being provided.

Abstract: A non-magnetic substrate for a magnetic recording medium is formed or molded within a die. The die is designed to define embedment depressions on the surface of the resulting non-magnetic substrate. Any bumps or lugs formed on the inner surface of the die can be employed to form the embedment depressions on the non-magnetic substrate. A magnetic material fills the individual embedment depression so as to establish a magnetic block embedded into the surface of the non-magnetic substrate. The magnetic block can be utilized as a positional mark in a tracking servo control for a corresponding read/write head in a magnetic storage system.

Abstract: An electric servo motor is controlled through a pressure control loop wherein a control object is the injection mechanism of an electric injection molding machine. A band elimination filter, which attenuates a frequency component of a band with predetermined width to be determined based on the resonance frequency of the control object, is provided in the pressure control loop.

Abstract: An anti-reflection molding has a transparent substrate (1) and an anti-reflection layer (5) provided at least on a surface of the transparent substrate (1), an interface of a transparent window on which the anti-reflection layer is formed has an average surface roughness Ra of between 2.0 and 150 nm, and the molding has a curved surface having a radius of curvature of not less than 40 mm and protruding on the surface side or a flat surface in the transparent window.

Abstract: A mold for containers with handles is disclosed that includes a female mold, a male die, a detachable piece placed on the female mold together with a blocking detachable piece, and a detachable piece placed on the male die, forming a bin that has a peripheral skirt which has diametrically opposing perforations through which runs a connecting rod between a retention button and a handle, the separation of the handle from the bin not being possible; furthermore the peripheral skirt is joined to an upper rim of the bin of a horizontal segment having a void just above the retention point of the handle with the bin.

Abstract: Method and apparatus for molding an IOL comprising first and second mold halves each having an optic forming surface and haptic forming surfaces which together define a mold cavity in the shape of the IOL to be molded therein when the mold halves are assembled together. An injection port is formed and connects to one of said haptic forming surfaces or the optic forming surface wherethrough a polymerizable material is injected into the mold cavity. A venting port is formed and connects to another haptic wherethrough air escapes from the mold cavity as the polymerizable material is injected through the injection port.

Abstract: An injection apparatus in an injection molding machine transmits a drive force generated by an injecting servomotor to a screw through a drive force transmitting mechanism to move the screw for performing injection. In addition, the injection apparatus has a dead zone of movement provided by a predetermined distance in the range of the injecting servomotor to the screw.