Tank Filament Winding Fiber Layup

Tank filament winding fiber layup shows the actual winding process in progress: a large FRP tank being wrapped with continuous glass rovings, with a worker guiding the fiber delivery. The tank is mounted on a rotating winding machine.

The Winding Process

As the mandrel rotates, thousands of glass filaments are pulled through a resin bath and laid down in a programmed pattern. The fiber delivery head moves along the tank length, laying down helical and circumferential layers. The operator monitors the process and ensures even fiber distribution.

Laminate Construction

• Inner corrosion barrier: a resin-rich layer with surface veil and C-glass mat for chemical resistance.

• Structural layer: filament-wound glass roving in hoop and helical directions for strength.

• Outer layer: UV-resistant resin topcoat for weather protection.

Quality Control During Winding

Operators monitor resin content, fiber tension, and layer thickness. The winding angle is programmed to provide the required hoop-to-axial strength ratio. After winding, the tank is cured in an oven or at room temperature, then spark-tested for liner integrity.

Safety

Workers wear protective clothing, gloves, and respirators when handling catalyzed resin. The work area is ventilated to control styrene fumes. Rotating machinery is guarded.

Conclusion

Tank filament winding fiber layup is the core process for producing large corrosion-resistant FRP vessels. Skilled operators and CNC-controlled winding produce tanks with decades of service life in demanding chemical and water applications.