Glass Roving Fabric

... consist of one or a certain number of glass strands aligned almost parallel and bundled to form a twist-free cable. Rovings are processed to make roving fabrics, chopped textile glass (chopped glass fibre strands), mats, and chopped strands. In a number of manufacturing methods, e.g. winding and pultrusion, rovings are used directly as the reinforcing material.
Roving fabrics made from textile glass rovings are of particular importance. With these, thick mould parts (e.g. in mould construction) can be made with few layers. Both the fibre content and the strength are greater by far than those of mat laminates, but lower than those of glass filament fabrics.
 

Glass roving fabric with twill or plain weave