Hunold + Knoop Kunststofftechnik GmbH
Corveyer Straße 5
59590 Geseke

Telefon: 02942/9798-0
Telefax: 02942/9798-99
info@hunold-knoop.de

TPU-X® - Competition for rubber elastomers

Online cross-linking of TPU-X® in the injection moulding process - short process instead of long process chains

„Wherever technological life gets tough is where our TPU-X® feels at home.“
M. Hunold

The premium material TPU-X® is deployed anywhere where the highest performance is required. The revolutionary material properties of cross-linked polyurethane (TPU-X®) are what make this new material so unique. High stresses in machine and plant construction become manageable with TPU-X®.

A moulding process patented by Hunold + Knoop has made it possible to considerably simplify and speed up the cross-linking process.

High stresses in machine and plant construction become manageable with TPU-X®.

TUP-X

The advantages of TPU-X

  • Rubber-elastic properties
  • Enormous dynamic properties
  • Considerably increased life expectancy under extreme conditions
  • Extremely high resilience
  • Very high level of "snappiness"
  • Lower abrasion
  • Continuous working temperature up to +120°C
  • Short-term max. temperature up to +150°C
  • Excellent oscillation and vibration dampening (NVH)
  • Drastically shortened process chain compared to expensive vulcanisation
  • Short cycle times
  • 2K material combinations with other technical plastics and metals
  • Settings from approx. 45°ShA to 74°ShD
  • Oil and grease-resistant
  • Ozone-resistant
  • Odourless
  • Storage stable in contrast to rubber

References

“The output in our sieving plants has increased by 10-12% with the new TPU-X® sifter balls.  The operating time of the balls even increased 3-4 fold.” 
Dipl.-Ing. Heiko Sykorra, Managing Director
Briloner Hartstein Werk GmbH & Co. KG

 

"TPU-X® offers unbeatable benefits for many applications. Costs are reduced - and higher quality, more resilient parts are produced.  Valuable pioneering work is being performed here by Hunold + Knoop.” 
Hans Kampsen, Head of Sales and Techn. Service
Automotive BASF Polyurethanes GmbH, Lemfoerde

 

Areas of application include:

  • Sealing technology
  • Gear wheels (substitution of POM, PA, since more flexible)
  • Rollers, cylinders and spindles for paper transport

 

The fold test shows the enormous resilience of cross-linked TPU-X®

The fold test shows the enormous resilience of cross-linked TPU-X® (bottom) and non-crosslinked TPU (middle). 

2-axes diagram

The Vicat softening test shows that TPU-X® (purple) softens considerably later, at about 170°C, than non-cross-linked TPU (blue).

Bar graph of the life expectancy of the TPU-X® component

The significantly higher life expectancy of TPU -X® component (turquoise) compared to competitor products from TPU (blue) has been demonstrated in bench tests at a customer.

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https://www.hunold-knoop.com/high-tech-products/tpu-x