Machine and method for manufacturing fibrous container bodies

Claim 1

A METHOD OF PRODUCING A SPIRALLY WOUND TUBE PREPARATORY TO CUTTING THEREFROM INDIVIDUAL CONTAINER BODIES OF PREDETERMINED LENGTH EACH HAVING A SPIRALLY WOUND UNITARY LABEL PATTERN AND EACH BEING PROVIDED WITH A PULL STRING DISPOSED IN A PREDETERMINED RELATIONSHIP TO SAID LABEL PATTERN, COMPRISING THE STEPS OF PROVIDING A LABEL WEB HAVING SAID LABEL PATTERNS SUCCESSIVELY DISPOSED THEREON AND HAVING INDEX FEATURES THEREIN LOCATED IN PREDETERMINED RELATIONSHIP TO SAID LABEL PATTERNS, PROVIDING A BODY PLY WEB, BRINGING AN ENDLESS STRING INTO POSITION ADJACENT ONE SIDE OF SAID BODY PLY WEB AND IN LONGITUDINAL ALIGNMENT THEREWITH, PULLING SAID ENDLESS STRING THROUGH SAID BODY PLY WEB AT PREDETERMINED INTERVALS EQUAL TO THE LENGTH OF THE SUBSEQUENTLY FORMED INDIVIDUAL CONTAINER BODIES FROM LOOPS PROJECTING FROM THE OPPOSITE SIDE OF SAID BODY PLY WEB, CUTTING SAID LOOPS TO CREATE FREE ENDS IN SAID PULL STRINGS, PROVIDING INDEX FEATURES IN SAID BODY PLY WEB IN PREDETERMINED RELATIONSHIP TO SAID FREE ENDS, FEEDING SAID WEBS TOWARD A WINDING MANDREL PREPARATORY TO WINDING THEM INTO A TUBE, COMPARING THE POSITIONS OF SAID LABEL WEB INDEX FEATURES WITH THE POSITIONS OF SAID BODY PLY WEB INDEX FEATURES WHILE SAID WEBS ARE THUS BEING FED TO ASCERTAIN THE RELATIVE POSITIONS OF SAID LABEL PATTERNS AND SAID PULL STRINGS, CORRECTING THE POSITION OF SUBSEQUENTLY FORMED LOOPS IN SAID BODY PLY WEB WHEN SAID COMPARISON INDICATES A VARIATION FROM REGISTERED POSITION, AND SPIRALLY WINDING SAID WEBS AROUND SAID WINDING MANDREL TO FORM THEM INTO A TUBE.

Claim 2

A METHOD OF PRODUCING A SPIRALLY WOUND TUBE PREPARATORY TO CUTTING THEREFROM INDIVIDUAL CONTAINER BODIES OF PREDETERMINED LENGTH EACH HAVING A SPIRALLY WOUND UNITARY LABEL PATTERN AND EACH BEING PROVIDED WITH A PULL STRING DISPOSED IN A PREDETERMINED RELATIONSHIP TO SAID LABEL PATTERN, COMPRISING THE STEPS OF PROVIDING A LABEL WEB HAVING SAID LABEL PATTERNS SUCCESSIVELY DISPOSED THEREON AND HAVING INDEX FEATURES THEREIN LOCATED IN PREDETERMINED RELATIONSHIP TO SAID LABEL PATTERNS, PROVIDING A BODY PLY WEB, BRINGING AN ENDLESS STRING INTO POSITION ADJACENT ONE SIDE OF SAID BODY PLY WEB AND IN LONGITUDINAL ALIGNMENT THEREWITH, PULLING SAID ENDLESS STRING THROUGH SAID BODY PLY WEB AT PREDETERMINED INTERVALS EQUAL TO THE LENGTH OF THE SUBSEQUENTLY FORMED INDIVIDUAL CONTAINER BODIES FROM LOOPS PROJECTING FROM THE OPPOSITE SIDE OF SAID BODY PLY WEB, CUTTING SAID LOOPS TO CREATE FREE ENDS IN SAID PULL STRINGS, PROVIDING INDEX FEATURES IN SAID BODY PLY WEB IN PREDETERMINED RELATIONSHIP TO SAID FREE ENDS, FEEDING SAID WEBS TOWARD A WINDING MANDREL PREPARATORY TO WINDING THEM INTO A TUBE, COMPARING THE POSITIONS OF SAID LABEL WEB INDEX FEATURES WITH THE POSITIONS OF SAID BODY PLY WEB INDEX FEATURES WHILE SAID WEBS ARE THUS BEING FED TO ASCERTAIN THE RELATIVE POSITIONS OF SAID LABEL PATTERNS AND SAID PULL STRINGS, CORRECTING THE POSITION OF SUBSEQUENTLY FORMED LOOPS IN SAID BODY PLY WEB WHEN SAID COMPARISON INDICATES A VARIATION FROM REGISTERED POSITION, AND SPIRALLY WINDING SAID WEBS AROUND SAID WINDING MANDREL TO FORM THEM INTO A TUBE.