Appeal No. 1999-0984 2
Application No. 08/696,248
THE INVENTION
The invention is directed to a blanket material and a process for its preparation, for
an extended nip press wherein short fibers are embedded in a two component polyurethane
coating aligned in a cross-machine direction. Additional limitations are described in the
following illustrative claims.
THE CLAIMS
Claims 1and 3 are illustrative of appellants’ invention and are reproduced below.
1. A blanket for an extended nip press comprising:
a blanket material forming a loop of a selected cross-machine dimension and a selected
circumferential dimension, and
a two component polyurethane resin impregnating the loop and forming a coating thereon,
the polyurethane resin having short fibers embedded therein, the fibers being
substantially aligned with the cross-machine direction, the fibers being in sufficient quantities
to provide significant structural reinforcement of the urethane in the cross-machine
direction, wherein the coating has portions defining a plurality of parallel grooves extending
about the loop in the machine direction, and wherein the short fiber reinforcement
reinforces the urethane to prevent the grooves from collapsing under the applied loads of
an extended nip press.
3. A method of forming a press blanket for an extended nip press comprising the steps of:
looping a bare fabric substrate around two support rollers, the rollers defining a top run
region between the two support rollers;
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