PBT (polybutylene terephthalate) offers many of the same properties as Nylon, however, PBT absorbs very little water; allowing PBT to hold its stiffness in wet applications. PBT is an economical substitute for Nylon 6.6 or 6.12 in many applications, and has better abrasion resistance than polypropylene or polystyrene. PBT also has excellent bend recovery, excellent solvent resistance and excellent oxidation resistance at high temperatures. PBT has very good resistance to sunlight.

When compared with Nylon, PBT is noted for its durability, softness and elasticity. A major difference between Nylon and PBT is the ability to maintain stiffness. PBT absorbs much less water than Nylon, allowing it to maintain optimal stiffness during wet and dry conditions. When saturated in water for 24 hours, Nylon 6.12 has an absorption rate of 3.00% and PBT absorbs about 0.20%.

Another major advantage to PBT over Nylon is its chemical resistance properties. PBT rates higher in resistance to the following major chemical categories: Mineral Acids, Organic acids, Oxidizing agents, Organic solvents, and Petroleum.

For more information, go to our Materials page.

The chemically tapering process starts with extruded filaments that are cut to size. The filament then goes through our patented chemical process of tapering the tip of the filament.

Chemical tapering allows for more control over the filament’s sharpness and length, making PSF filaments the highest quality tapered filaments.

Yes we do. We offer a patent license or technology transfer so that you can manufacture high quality filaments from your local plant. We will help you set up your plant and then train you on how to use the technology. For more information, go to our Licensing Technology page.

Yes, we currently offer finished cosmetic brushes, artist brushes and toothbrushes.