Patent ID: 6227256
Filing Date: 2001-05-08
Classification: D21F,Y10T

Abstract:
A papermaking fabric formed in repeats of a weave pattern, said fabric comprising:a lower layer having a selected number of lower CMD yarns per weave pattern repeat;an upper layer having a selected number of upper CMD yarns per weave pattern repeat which is at least twice that of said lower layer;a system of MD yarns interwoven in said weave pattern with said upper and lower CMD yarns;each said MD yarn in each said weave pattern repeat interweaving to cross-under an even number of lower CMD yarns and to crossover an uneven number of upper CMD yarns, the number of said upper MD yarn crossovers being at least three fifths of the total of said MD yarn crossovers and cross-unders;said MD yarn crossovers and cross-unders being arranged in twill arrays diagonally across said weave pattern to form upper and lower CMD yarn floats; wherein,said upper and lower CMD yarn floats are arranged in a twill pattern and form outer surfaces of said upper and lower layers weft dominant.