Some other common materials used for Injection plastic mold include polycarbonate, nylon, acrylic, and polyoxymethylene.... moreSome other common materials used for Injection plastic mold include polycarbonate, nylon, acrylic, and polyoxymethylene. Each of these materials have their advantages and disadvantages, which is why, when determining which material to work with, you need to think of how the final product will be used. Will it need to be food-safe? Does it need to be heat tolerant? UV resistant? These are some of the things you need to consider before deciding which material to use.
Once you know which material to use, you will be able to decide which material is best for your project. Specifically, you will need to choose between an amorphous plastic or a semi-crystalline plastic. The main difference between these two families of plastics is how they react to heat. less
Making a better product to survive has never meant more than in today’s global manufacturing environment. For a company to... moreMaking a better product to survive has never meant more than in today’s global manufacturing environment. For a company to succeed it is not enough just to make a good product. You have to be solving someone’s problems. Mold components are no exception in helping to keep tools running and making superior products that are right the first time.
If you find thin layers on the surface of a molded part are easily separating or peeling off the underlying material,... moreIf you find thin layers on the surface of a molded part are easily separating or peeling off the underlying material, you’re seeing a molding defect called delamination. Delamination for Injection plastic mold is a defect characterized by a flaking surface layer, similar to what you’d commonly find on flake mica. This is generally regarded as a relatively serious defect because it reduces the strength of the component.
Automation is becoming increasingly prevalent throughout every type of manufacturing because automated systems can take on... moreAutomation is becoming increasingly prevalent throughout every type of manufacturing because automated systems can take on most aspects of the work without operator action. This results in:
Injection plastic mold began in the late 1800’s to fill the need for plastic billiard balls as opposed to the commonly... moreInjection plastic mold began in the late 1800’s to fill the need for plastic billiard balls as opposed to the commonly used ivory billiard balls of the time. In 1868, John Wesley Hyatt invented a way to make billiard balls by injecting celluloid into a mold. Four years later, Hyatt and his brother invented and patented a machine to automate the process. This was the first plastic injection molding machine in existence and it used a basic plunger to inject plastic into a mold through a heated cylinder.
Features of plastic parts that require undercuts require a more complex mold design which could include an action, lifter,... moreFeatures of plastic parts that require undercuts require a more complex mold design which could include an action, lifter, handload inserts, or unscrewing cores.
Actions: Actions are sliding parts of the Injection plastic mold that move into place during the filling and packing part of the cycle. Once the part cools and is ready to be ejected, the action pieces retract as the mold is separated. Undercut features are created such as recesses and barbs, while the ability to eject the part is maintained
The injection molding process of Injection plastic mold relies upon injection molding machines with three primary... moreThe injection molding process of Injection plastic mold relies upon injection molding machines with three primary components.
First, a hopper feeds solid plastic pellets into a barrel.
In the barrel, a rotating screw generates enough friction and heat to melt the plastic into a liquid.
? From there, the machine injects the plastic under pressure into a mold. After it has cooled and hardened, the plastic component is ejected from the mold and the process begins again.
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