PULLWINDING technology is used for producing tubular profiles with superior rigidity and mechanical resistance.
This production process differs from traditional pultrusion with respect to way the fibreglass is positioned for reinforcing the profile.
In traditional pultrusion, reinforcement with fibreglass is done in a combined way using roving (unidirectional fibres), mat (continuous multi-directional fibres) and woven fabric (with a warp and woof). Pullwinding, used to create tubes, differs from traditional pultrusion in that it uses both roving placed longitudinally and circumferentially with respect to the profile’s axis.
In pullwinding, the structure obtained after polymerisation in the heated mould (the same kind as used in traditional pultrusion) has, however, superior rigidity due to the varying orientations of its reinforcements.