Progressively perforated tape roll
AssigneeMinnesota Mining and Manufacturing Company
InventorThomas L. Wood
Life of this patent
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Abstract
A tape includes a backing layer and an adhesive layer formed on the backing layer. A plurality of lines of perforations extend across the tape to separate the tape into sheets. The sheets have progressively increasing lengths such that, when the sheets are wound into a roll, each sheet is longer than the sheet underneath it. When in a roll, the outermost sheet covers all of the lines of perforations to reduce instances of the tape tearing in a downweb direction.
Claims9
A roll of tape wherein the tape has a first longitudinal end, a second longitudinal end, a first side edge, and a second side edge, the roll of tape comprising:
- a backing layer having a first side and a second side;
- an adhesive layer on the first side of the backing layer, wherein the tape is formed into a roll having a plurality of wraps;
- and
- a plurality of lines of perforations extending across at least most of the width of the tape between the first and second side edges to separate the tape into sheets such that starting from the inside of the roll, each line of perforations can be said to advance with each additional wrap of tape to create sheets having progressively increasing lengths from the first longitudinal end of the tape to the second longitudinal end of the tape, wherein when the sheets are wound into a roll, each sheet is longer than the sheet underneath it by an overlap length.
Dependencies are inferred from the claim text.