Perforating Apparatus and Method for Manufacturing A Shaped Line of Weakness
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United States of America Patent
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Issued Date -
Jan 11, 2024
app pub date -
Sep 25, 2023
filing date -
Sep 11, 2017
priority date (Note) -
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Abstract
A perforating apparatus and method includes a longitudinal cylinder axis about which a cylinder rotates. At least one shaped anvil bead is disposed on the cylinder. The cylinder including an anvil block and an anvil bead form a cavity. The cavity may be used to control the debris produced during the perforating process. A blade is disposed on a support to cooperate in contacting relationship with the anvil bead. A web is perforated as the web passes between the rotating cylinder and the support and the blade operatively engages with the anvil bead. The debris may be controlled by being drawn into the cavity prior to the point where the blade engages the anvil and, subsequently, being expelled after the point where the blade engages the anvil bead.
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