Manufacture of rolls of fibrous web material
AssigneeAmerican Can Company
InventorsThomas B. Howard, Gerald H. Puissant
Life of this patent
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Abstract
The tail of a roll of fibrous web material is secured to underlying layers through penetration of the layers by a row of needles extending tangentially of the roll and in the same direction that the tail extends or is presented. Penetration is to a depth of about 6 layers, and is accompanied by punching out a very small tab of each layer and pushing it into the opening of the successive, underlying layer thereby to lock the tail in place. Pulling the tail to unwind layers from the roll pulls the tabs from succeeding layers in the direction of unwinding, without tearing the outer layer.
Claims2
In a roll of fibrous web material, means securing its tail comprising a series of generally triangular tabs in linear array extending across said web, and cut from layers of said material to form aligned generally triangular openings in successive underlying layers, said tabs folded into, and frictionally retained within, said aligned openings along sides thereof closer to said tail and substantially parallel to the axis of said roll, said tabs presented in the direction of presentation of said tail.
A method for securing the tail of a roll of fibrous web material to underlying layers thereof, comprising the steps of:
- providing a plurality of laterally spaced, unidirectionally extending needles;
- and inserting said needles into several layers of said roll, tangentially thereof in the direction of presentation of said tail, to urge the fibers of one layer into an opening produced in the next underlying layer, thereby to secure said tail, wherein each said needle is so shaped and disposed as to cut a tab of material comprising said fibers in producing an opening, and to fold said tab in the direction of presentation of said tail upon urging the fibers of one layer into said opening.
Dependencies are inferred from the claim text.