Spray Gun

With spray-up, Basfiber® Gun Roving is fed into a chopper gun that chops the roving into fibers of a predetermined length. The Basfiber® fibers are directed to a resin stream. The combination material is directed to the mould cavity where the composite part takes shape.

Spray Gun Application Process
Layers
Basalt Fiber Tech Spray Gun Application Process©2015 - Designed by Lucas Sant'Anna
  • 1A Chopper Gun: is usually provided with a support for the roll, an air pressure pump and a resin chamber.
  • 2 The Basfiber® Gun Roving is connected to the gun, the resin is pressurized to the gun by the pump.
  • 3 The Chopped fiber are directed to a resin stream. The combination material is directed to the mould cavity where the composite part takes shape.

In the spray up process, after the gel coat cures, catalysed resin is sprayed into the mould along with chopped fiber. A chopped gun chops the Basfiber® Gun Roving directly into the resin spray so that all materials are simultaneously applied to the mould. Using low-styrene and suppressed-styrene resin, fillers, and high-volume/low pressure spray guns, or a pressure-fed resin roller applicators, helps to reduce the emissions of volatile organic compounds.

Basfiber® Gun Roving is manufactured from a collection of continuous Basfiber® filaments gathered together without mechanical twist into a single bundle. The roving is then wound into a tubeless package called a "doff", "cheese", or "ball" ready for customer operations. A silane-based sizing is applied to fiber filaments to improve handling and optimize the fiber-resin bond in the composite. Most spray up/gun rovings are compatible with polyester resin systems.