Overbraiding

Preforms made by the Overbraiding technique:

  • Overbraiding is the technique used to produce net shape cost-effective structural performs
  • During the overbraiding, the braid is placed directly onto a core, which have the inner geometry of the desired perform
  • By reciprocating the core through the braiding point, a pre-selected number of layers can be braided to obtain the desired wall thickness / aerial weight.
  • The lightweight core can remain in the product or a lost core technique can be used for the production of a hollow product.

Benefits of Overbraiding:

  • Cost effective method and low waste rates (5-10%)
  • Reproducible due to computer control and automated processes
  • Time saving compared to building your own performs manually
  • Braiding angles are programmable from 150 to 800
  • 0° (UD) yarns can be integrated to form a tri-axial braid
  • The ratio between bias and UD can vary from 100/0 up to 15/85
  • Hybrids are possible in the bias and in the UD direction
  • Excellent energy absorption in crash structures. Braided structures act as crackstoppers
  • Braided structures have a good resin permeability
  • Eccentric products are possible, even banana shaped performs
  • Preforms injected with the RTM process can have a fibre volume fraction of 55%
    • Doorn
Overbraider

What we offer:

  • For each product an overbraiding machine and yarn configuration can be selected to produce your optimum perform
  • We have 11 years of experience in overbraiding and we are able,with our R & D team, do the total perform development at Eurocarbon
  • When a special braiding machine or extra equipment is needed, we can build it
  • We can offer a turn-key solution and transfer of know-how, so you can produce your own performs
  • Preform developments and preform production can be done entirely in house