| 摘要 |
<p>A papermaker's fabric, usable in the forming section of a paper machine,having two layers of cross-machine-direction (CD) yams. Interwoven with theCD yams is a system of MD yams. At least some of the MD yams are grouped into alternatingpairs comprising a crossing pair having a first MD yam and a second MD yarn and asecond pair having a third MD yarn and a fourth MD yam. The first MD yam and the secondMD yam combine to weave each CD yam in the first layer and cross between the firstlayer and the second layer. The left and right warp yarns in the pairs are alignedin such a way that like adjacent yams from adjacent pairs have MD cell lengths greaterthan or less than the MD cell lengths from non-like adjacent yams from adjacentpairs. The third MD yam is interwoven with the first layer of CD yarns and the fourthMD yam is interwoven with the second layer of CD yams. In this manner, a paired warpedtriple layer forming fabric may be produced which minimizes drainage and crossoverpoint topogra phical markings.</p> |
