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: Thread clamping arrangement for a carrier gripper of a rapier loom wherein the arrangement includes a rigid support coupled to a lateral wall of a body of the carrier gripper. Each of an elongated first clamping element and an elongated second clamping element are provided. A clamping gap is formed by the first and second clamping elements. A magnet is included that exerts an attracting force on each of the first and second clamping elements.

Abstract: Thread clamping arrangement for a carrier gripper of a rapier loom wherein the arrangement includes a rigid support coupled to a lateral wall of a body of the carrier gripper. Each of an elongated first clamping element and an elongated second clamping element are provided. A clamping gap is formed by the first and second clamping elements. A magnet is included that exerts an attracting force on each of the first and second clamping elements.

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 Clamp for a rapier loom having A hollow body with first and second ends. The first end is adapted to be fastened to a transporting tape of the rapier loom. A thread gripping hook is mounted on the second end of the hollow body. A movable element is mounted in the hollow body and movable between retracted and extended positions. A tongue has first and second ends. The first end is mounted on the hollow body and the second end is adjacent the gripping hook. The second end is separate from the hook when the moving element is in the retracted position, and in contact with the hook when the moving element is in the extended position. A resultant movement of the tongue is in a direction substantially perpendicular to a path of the movable element.

Abstract: A method for cutting a selvedge on a weft thread insertion side of a rapier loom equipped with a weft thread supply by creating a free space of warp threads arranged separately from a main warp body. The weft thread is inserted through an open shed of the warp body. The inserted weft thread is beaten, and inserted into a holding device which subjects it tension. The wet thread is cut after being beaten and while subject to tension. The end of the weft thread is inserted it into the open shed of the warp after the cutting.

Abstract: A description is provided of laminates for printed circuits using unidirectional glass fabric produced with continuous yarn which is twisted, has a low number of twists or zero twisting turns with different gramme weights, interlaced warpwise with a leno interwoven binding using glass yarns of 5.5 to 22 Tex at a spacing of up to 20 cm. The application of these laminates to the manufacture of printed circuits offers advantages in terms of surface roughness and waviness, dimensional stability, evenness and perforability.

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.