Patent ID: 7640951
Filing Date: 2010-01-05
Classification: D03D,H05K,Y10T

Abstract:
1. A process for manufacturing a glass cloth comprising the steps of weaving a glass cloth composed of a warp yarn and a weft yarn of the same glass yarn and flattening the glass cloth under a tension exerted on the glass cloth of not more than 49 N/m per 1 m width of the glass cloth, wherein a thickness of the glass cloth is not less than 10 μm and not more than 30 μm, a ratio of warp yarn width to weft yarn width is not less than 0.80 and not more than 1.20 and a ratio of an elongation rate in a length direction when a load in a range of 25 N to 100 N per 25 mm width of the glass cloth is added in a warp yarn direction, to an elongation rate in a width direction when said load is added in a weft yarn direction is not less than 0.80 and not more than 1.20.