Puffed cellulosic product and method of manufacture

Claim 1

THE METHOD OF MAKING A PUFFED WEB WHICH COMPRISES THE STEPS OF PROVIDING AN OPEN NETWORK OF THREADS, INCLUDING TWO SETS OF GENERALLY PARALLEL THREADS WHICH ARE BONDED TOGETHER AT THEIR CROSSINGS TO PROVIDE DIMENSIONAL STABILITY TO THE WEB, AND A NON-WOVEN LAYER OF FIBERS IN WHICH THERE ARE ARTICULATED, HAPHAZARDLY ARRANGED FIBERS WHICH SPAN THE SPACE BETWEEN AND ARE ATTACHED TO SPACED PORTIONS OF PAIRS OF SAID THREADS, SUBJECTING THE WEB TO WORKING BY OPPOSITELY DIRECTED FORCES IN THE MACHINE DIRECTION ACTING IN THE PLANE OF THE SHEET TO EFFECT PERMANENT REORIENTATION OF THE PORTIONS OF THE ARTICULATED FIBERS DISPOSED BETWEEN SAID SPACED-APART POSITIONS OF ATTACHMENT WITH SAID THREADS, SAID FORCES BEING EFFECTIVE TO ELONGATE SAID ARTICULATED FIBERS BETWEEN THE POINTS OF ATTACHMENT THEREOF TO SAID THREADS AND TO THEN BUCKLE THE ELONGATED FIBERS TO PUFF THE WEB WITHOUT APPRECIABLY CHANGING THE ORIGINAL DIMENSIONS OF WEB.