Wrapper for wound filamentary packages

Claim 1

AN ASSEMBLY COMPRISING AN ANNULAR PACKAGE OF FRESHLY PREPARED REGENERATED CELLULOSE FILAMENTARY MATERIAL AND A SHRINKABLE PROTECTIVE PAPER WRAPPER CONFORMED TO THE CONTOURS OF THE PACKAGE, THE WRAPPER COMPRISING A BASE SHEET FORMED OF A COHERENT, PERMEABLE TISSUE PAPER, THE FIBERS OF WHICH ARE BONDED TOGETHER AT THEIR POINTS OF INTERSECTION TO PROVIDE A BASE SHEET HAVING A MINIMUM WET STRENGTH OF 300 GRAMS PER LINERA INCH ACROSS THE GRAIN, AND, SUPERIMPOSED ON A SURFACE OF THE BASE SHEET, CONTINUOUS, PARALLEL STRIPES OF A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF REGENERATED CELLULOSE AND ALKALI-SOLUBLE, WATER-INSOLUBLE CELLULOSE ETHERS, THE SUPERIMPOSED STRIPES CONSTITUTING FROM 2% TO 40% BY WEIGHT OF THE WRAPER, THE STRIPES HAVING A WIDTH OF FROM ONE-SIXTEENTH INCH TO TWO INCHES AND SPACED APART A DISTANCE OF FROM ONE TO THREE INCHES FROM EDGE TO EDGE AND OCCUPYING AT LEAST 5% BUT NOT MORE THAN 40% OF THE ARE OF THE SHEET AND EXTENDING CIRCUMFERENTIALLY OF THE WRAPPED PACKAGE, THE WRAPPER HAVING A MINIMUM AIR-PERMEABILITY OF ABOUT 117 CUBIC FEET PER MINUTE PER SQUARE FOOT OF AREA AS DETERMINED BY THE ASTM-D-737-46 AIR-PERMEABILITY TEST WHEREIN A PRESSURE DROP OF ABOUT 0.5 INCH OF WATER IS MAINTAINED BETWEEN THE OPPOSITE SIDES OF THE WRAPPER AND BEING CHARACTERIZED BY HAVING A GREATER SHRINKABILITY AT THE AREAS OCCUPIED BY THE SUPERIMPOSED STRIPES THAN AT THE UNCOATED AREAS.