Kevlar, or scientifically called poly-para-phenelyne-terephthalamide, is a high-strength fiber.

Developed by Stephanie Kwolek at DuPont in 1965, it was first commercially used in the early 1970s as a replacement for steel in racing tires.

Because of its high tensile strength-to-weight ratio, it is five times stronger than steel on an equal weight basis. It has an extremely high resistance to heat, and unlike most other plastics, it does not melt or even expand upon heating. It is also highly resistant to cold and does not become brittle at very low temperatures. It is also resistant to abrasion of any kind.

Kevlar is best known for its use in bulletproof vests and knife proof body armour, but it has dozens of other applications as well. It is used as reinforcement in car tires, in car brakes, in the strings of archery bows, and in car, boat, and even aircraft bodies.

 And it is used in Neptun’s straight-line edgers and mitering machines Rock. In fact, the conveyor pads that transport and hold the glass during the processing are based on a new patented concept with double material: the body of the pad (the black part in the picture) is made of a highly mechanically resistant material, designed to grant structural rigidity. The yellow part in contact with the guides is made of Kevlar, because of its wear-resistant and longlasting features.

This combination ensures excellent mechanical performances and stability, which is one of the most essential requirements to obtain a high-end quality product.

This is just one small, although distinctive and precious part of Rock. Several other technical and technological features take this machine to the top level of edging — have a look at the ROCK 11 here.



Conveyor pads based on a new patented concept with double material:

  • resilient body material with excellent mechanical performances (no flection, no thermal dilatations)
  • part in contact with the guides in Kevlar for wearless performances

The soft rubber component in anti-spot rubber.

  • no marks on glass
  • replaceable
  • easy maintenance