Patterned tissue paper containing heavy basis weight ribs and fourdrinier wire for forming same

Claim 2

A PATTERNED SHEET OF TISSUE PAPER CONSISTING OF A SERIES OF DISCRETE, CONTINUOUS, PARALLEL, EQUALLY SPACED, RELATIVELY HEAVY BASIS WEIGHT RIBS FORMED OF PAPER FIBERS SEPARATED BY A SERIES OF RELATIVELY LIGHT BASIS WEIGHT STRIPES FORMED OF PAPER FIBERS, THE STRIPES BEING OF SUCH LOW BASIS WEIGHT THAT THEY HAVE A MULTITUDE OF MINUTE OPENINGS THROUGH THEM AND HAVING A BASIS WEIGHT OF BETWEEN 2 TO 7.5 POUNDS PER 2,880 SQUARE FEET OF STRIPE, AND SAID RIBS HAVING A BASIS WEIGHT MORE THAN TWICE THE BASIS WEIGHT OF SAID STRIPES.

Claim 3

AN ENDLESS FORAMINOUS BELT OF A FOURDRINIER TYPE PAPERMAKING MACHINE HAVING AN OUTER SURFACE ON WHICH PAPER STOCK MAY BE DEPOSITED FOR DRAINAGE TO FORM A PAPER TISSUE WEB, SAID BELT COMPRISING SPACED LONGITUDINAL STRANDS EXTENDING LENGTHWISE OF THE BELT AND SPACED TRANSVERSE STRANDS EXTENDING CROSSWISE OF THE BELT WHICH ARE INTERWOVEN TOGETHER, EACH TRANSVERSE STRAND PASSING ALTERNATELY OVER A SINGLE LONGITUDINAL STRAND ON SAID OUTER BELT SURFACE AND THEN UNDER A PLURALITY OF LONGITUDINAL STRANDS, SAID STRANDS BEING SO CRIMPED THAT SAID TRANSVERSE STRANDS HAVE CRESTS ON SAID OUTER BELT SURFACE THAT ARE HIGHER THAN CRESTS OF THE LONGITUDINAL STRANDS ON SAID OUTER BELT SURFACE, SAID LONGITUDINAL STRANDS IN CROSS SECTON BEING AT LEAST APPROXIMATELY TWICE AS WIDE IN THE PLANE OF THE BELT AS THEY ARE THICK IN THE DIRECTION NORMAL TO THE PLANE OF THE BELT.

Claim 4

AN ENDLESS FORAMINOUS BELT OF A FOURDRINIER TYPE PAPERMAKING MACHINE HAVING AN OUTER SURFACE ON WHICH PAPER STOCK MAY BE DEPOSITED FOR DRAINAGE TO FORM A PAPER TISSUE WEB, SAID BELT COMPRISING SPACED LONGITUDINAL STRANDS EXTENDING LENGTHWISE OF THE BELT AND SPACED TRANSVERSE STRANDS EXTENDING CROSSWISE OF THE BELT WHICH ARE INTERWOVEN TOGETHER, EACH TRANSVERSE STRAND PASSING ALTERNATELY OVER A SINGLE LONGITUDINAL STRAND ON SAID OUTER BELT SURFACE AND THEN UNDER A PLURALITY OF LONGITUDINAL STRANDS, SAID STRANDS BEING SO CRIMPED THAT SAID TRANSVERSE STRANDS HAVE CRESTS ON SAID OUTER BELT SURFACE THAT ARE HIGHER THAN CRESTS OF THE LONGITUDINAL STRANDS ON SAID OUTER BELT SURFACE, SAID LONGITUDINAL STRANDS IN CROSS SECTON BEING AT LEAST APPROXIMATELY TWICE AS WIDE IN THE PLANE OF THE BELT AS THEY ARE THICK IN THE DIRECTION NORMAL TO THE PLANE OF THE BELT.