Manufacturing container or tube from paper; or other manufacturi – With cutting – breaking – tearing – or abrading – And with bending
Patent
1992-04-03
1993-06-22
Terrell, William E.
Manufacturing container or tube from paper; or other manufacturi
With cutting, breaking, tearing, or abrading
And with bending
493396, 761078, 229DIG4, B31B 125, B31F 110, B31F 108
Patent
active
052212491
ABSTRACT:
A creasing rule is used in connection with a steel rule cutting die to form creases or fold lines in a blank cut from a sheet material, such as corrugated paper board. The creasing rule includes a base portion which fits into the slot of a die board, and a top portion which extends outwardly from the surface of the die board. The top portion terminates in a creasing edge, which, in cooperation with an anvil roll, compresses the sheet material to form a crease or fold line in the sheet material. The creasing edge of the creasing rule is formed with a plurality of undulations giving the creasing edge a generally sinusoidal form. The undulations on the creasing rule taper inwardly towards the plane of the base portion as the undulations extend from the creasing edge towards the base portion and finally merge into the flat base portion. The size or magnitude of the undulations can be varied depending on the thickness of the sheet material being used. Additionally, the pitch of the undulations (i.e. the number of undulations per linear inch) can be varied as desired to produce fold lines requiring different amounts of force and fold relief to bend.
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Container Graphics Corporation
Terrell William E.
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