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Product Name sail battens & Kite spars specifications Pulwell has pioneered the F.R.P. pultrusion as well as pullwinding process in their quest for the ultimate batten. Pulwell has a wide range of battens to suit all classes of yachts and wind surfers, reflecting the latest research in design to perform reliably in all conditions. Sail Battens of many shapes, including Rounds, Hexagon, Elipse, Diamond, and Flat Rectangle are available as stock items. Advantages The highest glass reinforcement percentage (approx. 78%) of any F.R.P. manufacturing process, resulting in maximum stiffness for weight.?Specially formulated resins for high stress application. ?Lower pigment levels to avoid degrading the cure and reducing the strength properties of the matrix. The Vinylester formulation has no pigment to mask quality control and reduce cure and strength properties.? The epoxy-like properties and lower molecular weight of Vinylester battens make their extra cost negligible when considering their superior durability in high stress applications.?Optimized profiles to provide a low mass, low profile batten and to allow infinite shapeability.Pullwound tubes incorporate glass and carbon/glass, hybrid fiber reinforcements in a tough epoxy resin. The precision placement of pre-stressed fibers in continuous axial and biaxial plies optimize the stiffness, durability, transverse and bending strengths. The inherent flexibility and memory of the composite tubes dampen the effect of overpowering windloads and reflex to maintain an efficient sail shape.