Machine clothing having a seam, and spiral for use in such a seam

PCT No. PCT/SE96/00380 Sec. 371 Date Sep. 25, 1997 Sec. 102(e) Date Sep. 25, 1997 PCT Filed Mar. 25, 1996 PCT Pub. No. WO96/30589 PCT Pub. Date Oct. 3, 1996An improvement (20) for producing an enhanced seam on a machine clothing for a paper or cellulose machine, especially, but not exclusively, when using flat filament yarns (26) in the machine direction of the clothing is shown. The seam has two preformed yarn spirals (20), which are each bound, by the machine direction yarns (26) of the clothing, to one seam edge, thereby each forming a row of seam loops (22) which are meshable with each other and joinable onto each other by means of a pintle wire. At least one spiral (20), preferably both, is, between neighboring seam loops (22) in the row of loops, preformed with special securing portions (24), to which the spiral (20) is attached at the corresponding seam edge. The securing portions (24) hold the seam loops (22) spaced apart and are extended substantially in the longitudinal direction of the spiral (20).