Importance

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Abstract

A forming fabric for a papermaking machine woven according to a repeating pattern. The fabric includes a PS layer having a PS surface, with the PS layer including PS warps and first PS wefts, second PS wefts, and binder PS weft pairs interwoven in a first repeating pattern, and a MS layer having a MS surface, with the MS layer including interwoven MS warps and MS wefts. The binder PS weft pairs are interwoven with the PS warps and the MS warps to bind the PS and MS layers together. The first PS wefts have a larger diameter than the second PS wefts, the second PS wefts have a larger diameter than the binder PS weft pair, and in each repeat, the first PS wefts, the second PS wefts, and the binder PS wefts are inserted sequentially, preferably from large to small, forming a stair step topography.

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First Claim