Category Archives: Injection Molding

The difference between cast urethane and injection molding

    At Harkness Industries, we offer both injection molding and cast urethane. Understanding the difference between these two types of products can make a big difference in your bottom line.         Injection Molding Injection molding starts with the creation of what is called a hard tool. Think of this like a mold, a hard mold. The...
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Aerospace Relies on Injection Molding

Plastics are one of the few materials that work for both the outside and inside of an aircraft. Many industries rely on the durability and versatility of injection molded plastics, but perhaps none as much as the aerospace industry where the materials involved must withstand high forces and extreme temperatures all in the name...
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High Volumes, Minimal Waste with Injection Molding

In previous posts, we've mentioned that injection molding is very efficient for large production numbers, but just how it's so efficient is often a mystery to those outside of the industry. It begins with the mold itself. When we get specs from a client, we ensure our molds are absolutely precise to reduce the...
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Why Plastic Injection Molding is Efficient

At Harkness Industries, we understand that decisions around your plastic needs often involve more than just the ability to output a finished product. Sometimes, knowing which process can be quicker, uses less material, or outputs a more consistent piece is what contributes to the ultimate choice. If you're considering plastic injection molding, here are...
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Molding – Understanding the Difference Between Injection and Cast

Your project is unique to your needs and determining which process to use comes down to a few key differences in the production processes between urethane cast molding and injection molding. First, let's consider the similarities: Both processes allow for a multitude of colors, soft or rigid durometeres and the ability to "wrap" or cast around...
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Exciting Changes at Harkness

There are a number of exciting changes at Harkness we're pleased to share: Introducing two new member to our team; Gregg Hamel and Taegan Williams. Our new Senior Manufacturing Engineer, Gregg Hamel, joined us at the end of March to support custom urethane manufacturing and product development. With a Bachelor of Science degree in Chemical Engineering, Gregg...
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Three Advancements That Have Driven Injection Molding Technology

Injection molding technology has made major advances in the last 25 years, from largely a world of shoot-and-ship to doing as much as possible at the press — using automation to remove parts and assemble them, two-shot molding, even assembling parts inside the mold. Now instead of a big inspection department, constantly pulling parts off the...
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The Advantages of Custom Injection Molding

The injection molding process has several advantages over other molding processes. It allows for the fast production of plastic parts with reduced waste and at low cost. The following is a short list of what you can expect from utilizing Injection Molding as your form of production.
  • Injection molding allows for high production output...
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Urethane Mixing Machine Adds Flexibility to Harkness’ Production

One of the many ways Harkness Industries has become one of the plastic industry’s most customer-responsive suppliers is through versatility in production including prototyping, tool design, plastic and urethane molding. Production has moved to the forefront of technology with urethane mixing machine capability that can produce six different components simultaneously. An onboard computer...
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