Blog

All about color variances in natural polyurethanes

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...
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What you need to know about Profile Extrusion with plastics

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...
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Why Performance plastics are good for the environment

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.

What makes performance plastics so great?

  • They can withstand chemicals and corrosion, or are fully biodegradable.
  • They...
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What you need to know about Standard Urethane Products

Cast Urethane is known for its roughness, durability, and quality. Here’s what you need to know about our standard urethane products.
  1. 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!
  2. Stock shapes...
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Guide to Machining Cast Polyurethane Elastomers (Part 2): Knifing, Milling, Drilling, & Grinding

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...
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Guide to Machining Cast Polyurethane Elastomers Part 1: Sawing, Turning, Facing, and Boring

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...
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What you need to know about injection molding

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...
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What is the IAPD’s GreenScene Program?

At Harkness Industries, we are proud to be part of the International Association of Plastics (IAPD) GreenScene program. The association developed this program for all member companies that are engaging environmentally friendly business and manufacturing practices. Qualifying plastics manufacturers compete an application and must earn a minimum of 100 points to qualify for GreenScene designation. The...
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Product profile: Urethane applications

If you’re looking for a cost-effective, tough plastics material, consider Urethane Plastic. Urethane elastomers is strong, but flexible enough to “spring” back to its original shape when bent or stretched. It’s ideal for highly stretched parts like pulley wheels, conveyor  rollers, ball-bearings, bushings, and cart wheels. Benefits of urethane elastomers:
  • high load-bearing capacity (tension, compression, shear)
  • ...
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Who is Fimor North America?

In October 2017, we announced that Fimor North America purchased Harkness Industries. The merger of our two companies will provide our customers exciting new possibilities in the years to come. Fimor was founded in 1977 and provides custom molded polyurethane parts and semi-finished products for numerous industries, protection applications, scrapers, and railroad infrastructure. Today, they...
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