Direct Roving

Filament Winding

Johns Manville rovings for filament winding are proven reinforcements for composite pipes, silos and tanks. They are manufactured by direct winding of continuous glass fibers of defined diameter into a cylindrical roving package.

StarRov® 086 is characterized by a soft silane sizing compatible with unsaturated polyester, vinylester and epoxy resins. Direct rovings with 086 sizing are easy to unwind with very low fuzz generation during processing, excellent wet-out in the matrix resin and superior fatigue characteristics in the composites.

StarRov® 097 and StarRov® 090 are characterized by silane sizing most suitable for reinforcement of epoxy, vinylester and unsaturated polyester resins.  These direct rovings are easy to unwind with even tension and show excellent wettability.

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