Direct roving is yarn of fiberglass filaments that is bonded in one strand and directly would on a bobbin without a twist.
Direct roving is made of E-type glass with maximum alkali content of <1.0 %. A thread usually consists of 1200 to 2400 endless fibres. Glass roving is a raw fiberglass material with a wide range of use. Direct roving is suitable for use in various textile technologies, filament winding, weaving, texturizing, pultrusion, multi-axial weaving, and others.
Key properties of the direct roving are: good abrasion resistance, high tensile strength, good warping and weaving properties, easy to impregnate.