PAPERMAKERS FABRIC FOR PIN-SEAM CLOSURE HAVING MACHINE-DIRECTION COMPOSITE YARNS CONTAINING MULTIFILAMENT CORES AND SYNTHETIC POLYMERIC SLEEVES

摘要

A press fabric for use on papermaking and similar machines is of the open-ended variety, and has loops (7) at each end enabling it to be closed into endless form during installation on the machine by means of a pin seam. The machine-direction (MD) yarns (1), from which the loops are formed during the flat or endless weaving of the fabric, are composite yarns having a core yarn (7) with a sleeve-like coating (3). The coating, either permanent, semi-permanent, or soluble, gives the composite yarn a monofilament-like structure enabling good loop formation and stability. The use of multifilament yarn as the core yarn provides a fabric having improved elasticity in the machine direction, and a greater degree of resiliency, following the removal of a soluble coating material, than can be obtained using monofilament yarn. IMAGE