US 5,503,196 AGranted

Papermakers fabric having a system of machine-direction yarns residing interior of the fabric surfaces

AssigneeAlbany International Corp.

InventorsMichael J. Josef, Eric R. Romanski, Ross G. Burbank

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Abstract

A papermaker's fabric having a smooth surface and a prolonged life includes flat machine-direction yarns which define the upper and lower surfaces thereof. The fabric has two layers of cross-machine direction yarns, each of which is interwoven with the flat machine-direction yarns. Other machine-direction yarns, of round cross section, weave with the cross-machine-direction yarns in the two layers to bind the two layers together. The knuckles of these round machine-direction yarns are within the fabric with respect to the planes defined by the flat machine-direction yarns, and, as a consequence, are less susceptible to degradation by heat and abrasion. The round machine-direction yarns may be used to seam the fabric. A longer fabric life follows from the protection of the round machine-direction yarns by the flat. The papermaker's fabric is particularly useful as a dryer fabric on the dryer section of a papermachine.

Claims34

Dependent claims

A papermaker's fabric for the forming, press and dryer sections of a papermachine comprising:

a first layer and a second layer of cross-machine direction (CD) yarns;
a first system of machine-direction (MD) yarns, said MD yarns of said first system being interwoven with selected CD yarns of said first and second layers in a duplex weave to bind said first and second layers together;
and
a second system of MD yarns, some of said MD yarns in said second system being interwoven with said CD yarns of said first layer and the remainder of said MD yarns in said second system being interwoven with said CD yarns of said second layer,
said MD yarns of said second system forming an upper and a lower surface of said fabric, and said MD yarns of said first system, and knuckles formed by the interweaving of said MD yarns with said selected CD yarns of said first and second layers, residing within said fabric with respect to said upper surface and said lower surface, whereby said MD yarns of said first system may be protected from abrasion.

2 more elements

Dependencies are inferred from the claim text.