While computers handle many processes in plastics molding, extrusion, and manufacturing, the relationship a plastics company has with is customers is one of the most important aspects of the job. It is the key to our success at Harkness Industries. We focus on building relationships before we make a sale. When we fully understand your reasons...Read more
About: Nancy Williams
Recent Posts by Nancy Williams
Are you looking for a cast polyurethane manufacturer? As you talk to prospective manufacturers, here are a few questions to ask to make sure you pick the right one:Read more
- What equipment do you use? This is a great question! Depending on what you need made, certain machines are better suited for your project than others....
The year is almost over but we feel the warmth and cheer in the air. We’ve had a pretty good year ourselves, and it really makes us think of how lucky we are. We live in a country where we’re all free to celebrate the holiday season in our own way. We can embrace our religions...Read more
If you’re considering a natural urethane for your next manufacturing project, here’s what you need to know about possible color variances. The color of natural polyurethane can vary from supplier to supplier, and is impacted by a variety of environmental factors. Typically, they vary between a light tan (almost yellow) to medium-dark amber (almost green). No...Read more
Harkness Industries has over 50 years experience in plastics manufacturing. This experience gives us a unique view of the world of urethane plastics and profile plastic extrusions. In the profile extrusion process, plastic in pellet form is fed into the extrusion machine where it is softened by friction and heat. This softened plastic is fed through...Read more
Performance plastics live up to their name and provide excellent performance, and are also a more environmentally conscious choice to other packaging materials. Much of the energy and environmental savings comes from the fact that they are so lightweight.Read more
What makes performance plastics so great?
- They can withstand chemicals and corrosion, or are fully biodegradable.
Cast Urethane is known for its roughness, durability, and quality. Here’s what you need to know about our standard urethane products.Read more
- Cast urethane products improve service life. Our MP Series product line, for example, can improve service life 10-20x when compared to conventional rubber or plastics. Urethanes also outlast hardened steel by 5-1!
- Stock shapes...
This month, we continue our guide to machining cast polyurethane elastomers and will be taking a closer look at knifing, milling, drilling, and grinding: Knifing: It’s important that the knife tool be as thin and sharp as possible to get the most precise cuts when close tolerances are present. For metals with hardnesses between 70A and...Read more
Machining metal and plastics are similar some aspects, but each have unique properties where it differs. In Part 1 of our guide to machining cast polyurethane elastomers, we look at 4 machining techniques: sawing, turning, facing, and boring: Sawing: We’ll most often use a band saw for cutting urethane because the long blades run cooler, and...Read more
Injection molding, like it’s name hints, is when plastic granules or pellets are melted and injected under pressure to fill a mold. The mold is then cooled and reused to create exact copies of the part. In this process, hardened plastics are added to a hopper, are melted to a pliable temperature, and pushed into the...Read more
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