What is filament winding?

Filament winding consists of winding continuous rovings of fiber onto a rotating mandrel in predetermined patterns.

This method of manufacturing provides the greatest control over fiber placement and uniformity of structure.

In the wet winding method, the fiber picks up resin either by passing through a resin bath or from a metered application system.

In the dry winding method, the reinforcement is in the preimpregnated form termed towpreg.

After several layers are wound, the component is cured and removed from the mandrel (or in some cases the mandrel becomes part of the component).

Filament winding is traditionally used to produce pressure vessels, pipe, rocket motor casings, tanks, ducting, golf club shafts and other symmetric parts.