Blog

Rubber Versus Polyurethane

Which material is better? As with most material selection questions, the answer is "it depends". Both materials have their place but which material is actually superior? In the case of tires, seals, and some belts, rubber is the best material. In the case of bushings, spacers, and high load components, polyurethane is the better choice. Read more

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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Jumbo Pour!

Harkness grows its aerospace business by expanding into Guerin urethane forming pads in a big way! In March 2015, Harkness produced a “Jumbo” forming pad for an 800 ton press. The 50” diameter x 10” thick pad weighed more than 900 pounds once completed and became single largest part that Harkness has ever manufactured. Guerin pad forming...
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What is the Process of Plastic Extrusion?

EXTRUSION plays a prominent part on the plastics industry. Extrusion, unlike moulding, is a continuous process, and can be adapted to produce a wide variety of finished or semi-finished products, including profile, sheet, film, covered wire and pipe. The process of plastic extrusion begins with the placement of raw resin into the extruder’s hopper. If the...
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What is Cast Polyurethane?

Cast polyurethanes are a versatile and diverse materials that have chemical resistance, ease of processing, relative low cost, abrasion resistance and chemical resistivity. Cast urethanes are inexpensive and can be made from a variety of products in a variety of industries. Cast polyurethanes are elastomers and are created by the reaction of a prepolymer which contains...
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What is Profile Extrusion?

  Harkness Industries produces several resins suitable for profile extrusion. The extrusion process for profiles is similar to sheet extrusion. The resin is fed into an extruder which melts the material and forces it through a die that gives it the desired shape. Additional processing is necessary to give the extruded profile its final contours. Profiles may...
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Harkness February News Update

We hope your February is off to a great start. We have a few exciting updates to bring you this month, so let's get to it! First, we would like to welcome Tim Emerson to the team as our Controller. Tim brings with him experience in strategic planning, operations management, as well as financial analysis and...
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The Capabilities of Custom Urethane

Urethane's unique physical properties allow it to be molded into thousands of custom parts. Because of it's abrasion resistance, high load capability, and superior dynamic properties, Urethane is the perfect material for creating custom parts. When creating sometimes intricately designed custom shapes, urethane will begin as a rod, tube, sheet or bar. This shape is...
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Endless Application Opportunities

Frank & Bob at the 2014 International Association of Plastic Distribution Expo in Chicago explaining the diverse uses of polyurethane and the wide range of hardnesses available to suit a variety of environments and applications. If you would like to request a quote please contact us or use our Request...
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