Products/Services for Cold Runner Mold Systems

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    Cold Runner Systems - (7 companies)
    ...which the mold is split into two halves. By contrast, three-plate cold runner molds have two parting planes. When a part is ejected, the mold splits into three sections. Three-plate cold runner molding provides for greater design flexibility and allows... Learn More
  • Molding Machines-Image
    Molding Machines - (383 companies)
    ...molding is a process where metal molds are dropped into a tank of liquid plastic. As the plastic cools around the mold, the part is formed. The increasing popularity of dip molding is due to its shorter lead times, lower tooling costs, faster prototyping... Search by Specification | Learn More
  • Temperature Controllers-Image
    Temperature Controllers - (1105 companies)
    ...controllers may be used in a number of heating and cooling applications, including boiler, furnace, hot runner, HVAC, and laboratory control. While the following video is specific to PID controllers discussed below, it gives a good overview... Search by Specification | Learn More
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    Hot Runner Systems - (24 companies)
    Hot runner systems are used in injection molding machines to convey molten plastic from the nozzle to the mold cavity. How to Select Hot Runner Systems. Hot runner systems are feed systems for injection molds which imbue molten plastic from... Learn More
  • Hot Runner Controllers-Image
    Hot Runner Controllers - (40 companies)
    Hot runner controllers are specialized temperature controllers that keep specialized injection-mold components at the design temperature in order to keep the mold material flowing. They use several different control techniques. Limit control... Search by Specification | Learn More
  • Cold Forming and Cold Heading Services - (176 companies)
    Cold forming and cold heading services form metal by placing it under pressure, without the addition of heat, until the desired shape is achieved. Cold heading is commonly used to manufacture bolts, rivet nuts, and many other fasteners. How... Search by Specification | Learn More
  • Cold Traps - (8 companies)
    Cold Traps are laboratory glassware apparatus that condense all vapors except permanent gases into liquid or solid. Cold traps are devices meant to protect vacuum pumps from contamination by condensing harmful vapors into a liquid or solid. The trap... Learn More
  • Cold Isostatic Pressing Services - (11 companies)
    ...vary in terms of capabilities. Some suppliers can design or fabricate rubber or elastomer molds, mandrels, bags, tooling and fixtures. Others specialize in decanning or chemical milling operations. Densification or porosity removal services use cold... Search by Specification | Learn More
  • Cold Packs - (28 companies)
    Cold packs, also called ice packs or gel packs, are enclosed sacs of ice or refrigerant used to maintain temperature of a surface or packaged item. The endothermic reaction of a cold pack results in its absorption of nearby warmth. Cold packs... Learn More
  • Cold Planers - (16 companies)
    Cold Planers are pavement recycling machines. These machines are asphalt milling machines that are used to remove pavement or asphalt concrete from roadways. Cold Planers. Image Credit: Cat | For Construction Pros. Cold Planers are pavement... Learn More
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...and inclusion of sharp corners. Common runner-design guidelines for other engineering polymers also apply to polyesters. A cold-runner system should be designed for smooth, fully balanced material flow. Generously radiused transitions are suggested to reduce resin hang-up and shearing. Cold slug...

- and cold-runner systems, the impact of circular and noncircular gates, and a variety of mold cavity designs, including single-cavity, multicavity, and family molds. An option to assign multiplicity factors for mold cavities in order to receive multicavity simulation results from the modeling of only one...

...shrinkage. The runner system affects how much scrap is produced. Conventional cold runners create a lot of scrap, which is often reground and reused. Hot runners yield no scrap, but cost more and are harder to operate. They are especially useful when runner volume is large relative to part size...

...thickness). Weld line. Knit Line/Meld Line. Discolored line where two flow fronts meet. Mold/material temperatures set too low (the material is cold when they meet, so they don 't bond). Warping. Twisting Part. Distorted part. Cooling is too short, material is too hot, lack of cooling around the tool...

...nozzles, providing flexibility through variable tip-insert lengths. To ensure that a clean gate break is produced, the cavity insert tip extends all the way to the part surface. This function also ensures that there is no cold slug. An alternative to subrunners, edge-gate nozzles are suited for open-top...

...nozzle from Husky Injection Molding Systems Ltd. features a bore diameter of 11 mm and a minimum nozzle spacing of 18 mm. The Ultra 250 nozzle provides a throughput of 10 g/sec, and is constructed with a spring that holds the unit against the manifold in cold conditions to eliminate leakage. The unit...

...wants can run multiple parts varying in size, that make up the components of an assembly, often referred to as a family mold. All the parts of an assembly should be produced with one shot. This type of mold makes mold balance very difficult to achieve and the cold runner design is guesswork a lot...

One of the most common methods for creating plastic parts is injection molding. Granular plastic resin, along with any colorants or additives, is heated and injected under pressure into the mold cavity. In the case of a cold runner mold, a feed channel and runners connect the injection orifice...

...to open all of the valves and pulse cold water through the system. Once the probes sense that the desired steel temperature is reached, water flow through the mold is again terminated until the next shot. A unique feature of this system is that with larger, complex molds in which heat transfer from...

...profile across the mold surface. However, the continual opening and closing of the mold, the injection of cold raw material, and the cold nozzle against the sprue bushing all work against a constant mold temperature. Because poor heat distribution within the mold can affect the physical properties...

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