WOVEN FABRIC REINFORCEMENT TO OPTIMIZE DIMENSIONAL STABILITYOF LAMINATED COMPOSITE STRUCTURES, INCLUDING PRODUCTS FOR ELECTRICAL AND ELECTRONIC APPLICATIONS

摘要

A woven fabric reinforcement characterized by a weight of up to 190 grams pe r square meter, with a number of warp yarns which is at least 55 % of the tota l number of yarns, and where the crossovers between warp yarns and weft yarns is between 200 and 315 crossovers per square centimeter. Yarn disposition is su ch that the sum of each yarn torsion component in warp and in weft is balanced and equal to zero. Use of this fabric in laminated composite structures, in particular printed circuit boards, with advantages in dimensional stability and evenness.