Abstract: Method of production of glass fabric that does not exhibit surface hairiness, that is sufficiently close-woven, with which printed circuits with a high degree or rigidity can be realized, as well at supply of a glass fabric, prepreg and print circuits. Glass fabric (40) woven from warp yarn (20) and weft yarn (30) containing multiple glass filaments; in relation to the warp yarn (20) and the weft yarn (30), at least one of the two has not undergone twisting and the profile of its glass filament has been flattened. Since between warp yarn (20) and weft yarn (30), at least one of the two has not undergone twisting, it is possible to limit the surface hairiness and at the same time to obtain that the fabrics arm separated and uniformly distributed during the weaving operation also without performing a specific treatment of uniform fibers redistribution.

Abstract: A woven fabric reinforcement characterized by a weight of up to 190 grams per square meter, with a number of warp yarns which is at least 55% of the total number of yarns, and where the crossovers between warp yarns and weft yarns is between 200 and 315 crossovers per square centimeter. Yarn deposition is such that the sum of each yarn torsion component in warp and in weft is balanced and equal to zero. This fabric is used in laminated composite structures, in particular printed circuit boards.

Abstract: A woven glass fabric reinforcement for paper or resinous articles made of continuous glass filament warp yarns and weft yarns is provided. At least one of the warp yarns and the weft yarns is a zero-twist yarn made of continuous glass filaments having a diameter of between about 5 and 13 microns and a yarn count of between about 5.5 and 136 Tex.

Abstract: A unidirectional fabric produced with a continuous glass yarn which is twisted, plied or has zero twisting turns, with different gram weights. Interlacings of thin glass binding yarns for stabilizing the fabric extend warpwise to engage weft yarns in a leno interweaving. The fabric is used in the manufacture of printed circuits and in industrial applications.

Abstract: The present invention relates to a glass fabric produced with zero-wist yarn, its use an the manufacture of printed circuits and in numerous other industrial applications, as well as to a process for the manufacture thereof.