US 5,103,874 A · Papermakers fabric with stacked machine direction yarns

Abstract

A papermakers fabric have a system of flat monofilament machine direction yarns (hereinafter MD yarns). The system of MD yarns comprises upper and lower yarns which are vertically stacked. Preferably, the upper MD yarns define floats on the upper surface of the fabric and each upper MD yarn is paired in vertically stacked orientation with a lower MD yarn. At least the upper MD yarns are flat monofilament yarns woven contiguous with each other to reduce the permeability of the fabric and to lock in the machine direction alignment of the stacking pairs of MD yarns. The stacked, contiguous woven machine direction system provides stability and permits the MD yarns to have a relatively high aspect ratio, cross-sectional width to height, of greater than 3:1. A seam for the fabric comprised of loops formed from selected flat MD yarns is provided to render the fabric endless during use in papermaking.

Claims48

Dependent claims

A papermakers fabric comprising:

a system of CMD yarns including at least upper and lower layers of CMD yarns;
a system of flat monofilament MD yarns interwoven with said CMD yarns in a selected repeat pattern;
said MD yarn system having paired upper and lower yarns that are stacked in the same relative vertical alignment to each other throughout the body of the fabric;
and
at least said upper MD yarns are 100% warp fill.

2 more elements

Dependencies are inferred from the claim text.

Papermakers fabric with stacked machine direction yarns

Life of this patent

Papermakers fabric with stacked machine direction yarns

Life of this patent

Abstract

Claims48