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Description of the process

Vetrotex fiberglass yarns can be braided to produce tubular structures. The flexibility of the braid structure, as well as the mechanical, thermal and electrical characteristics of glass, make braided fiberglass  ideal for many products. 

A circular braiding machine is composed of two rotating sets of bobbins on which glass filament yarns have been wound. One set runs clockwise; the other runs counterclockwise around the center of the machine along a defined path. The bobbins of the two sets pass alternatively inside and outside along the path, forming the tubular braid structure. Its width is determined by the take-up speed of the braiding machine. In some applications, the tubular sleeve can be braided on a core because the braiding structure can easily conform to any complex shape. The resulting product is called rope. The rubbing forces are high during braiding, therefore, plied yarns are often used to avoid break and fuzz accumulation.

Tension control systems ensure that the fiberglass strands are appropriately tensioned during the braiding process. Consistent tension is important for maintaining uniformity and quality in the braided structure. Furthermore, the braids can undergo additional treatments such as coating, impregnation, and partial or full heat cleaning to impart specific characteristics desired by the end user. The final product is commonly called „sleeving“.

The specific details and parameters of the fiberglass braiding process can vary based on the machine design, application, and desired product specifications.

Applications include:

  • Protection of wiring under the hood of cars.
  • Electrical insulation of wiring for domestic appliances, aeronautics and more.
  • Sleeving, braid, rope used for thermal insulation as non- asbestos, heat-resistant sealing gasket, expansion gasket, flame barrier and more.