The classification of fiberglass needle mat

Glass fiber needle mat can be divided into three categories.

1, fiberglass chopped strand mat. Chopped fiberglass needle mat after cut the continuous glass fiber, then uniformly randomly distributed transmission belt, which is a kind of the sheet material connected by acupuncture needling machine. Use it to suppress the GMT sheet porosity, good flowability, suitable for pressing thin-walled ribs complex parts, but slightly lower than the mechanical properties of glass fiber reinforced continuous needle mat GMT.

2, continuous glass fiber needle mat. Continuous glass fiber needle mat is a continuous strand randomly distributed transmission network belt, it felt like material through needling machine connection made. Continuous glass fiber needle felt reinforced high mechanical strength GMT sheet, but the porosity and liquidity as short-cut needle felt, therefore uniformity as short-cut needle felt reinforced GTM sheets, suitable for a large area of simple shapes the structural member. Currently, there are many transformer factory will continuously needled felt applied to the winding insulation.

3, unidirectional glass fiber needle mat. Unidirectional fiberglass needle mat is designed for automotive bumper GMT sheet developed, he enhanced GMT sheet in the transverse strength is far below the strength in the longitudinal direction.