| 摘要 |
A papermaking fabric for use in the forming, press or dryer section of a papermaking machine or the like includes a base layer formed at least partially of multi-lobed yarns. The multi-lobed yarns are defined by a plurality of strands fused together to form joints therebetween, with the strands cooperating to define an internal passage. The strands are locally separable so that, during a needling operation in which a fibrous batt layer is secured to the base layer, the needles locally separate one or more strands to force a penetrating portion of the fibrous batt layer therethrough. The portions of the yarn adjacent the local separation grip the penetrating portion of the batt layer, to significantly increase the batt locking properties of the base layer. The multi-lobed construction of the yarn defines longitudinal indentations which increase the overall void volume of the base layer. |
