Perforating and slitting die sheet, methods of constructing the same and paper product produced therefrom
AssigneeXynatech, Inc.
InventorPierson S. Kang
Life of this patent
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AssigneeXynatech, Inc.
InventorPierson S. Kang
Estimating the term…
A first method of constructing a die sheet includes covering a die surface with a first, spaced pattern of a first photo-resist material and then covering the first pattern with a second, continuous pattern of a second photo-resist material. A chemical removes material from sections not covered by the second pattern and the second pattern is then removed. A chemical removes material from die surface sections not covered by the first pattern. A second method of constructing a die sheet includes covering sections of a die surface with a pattern of photo-resist material having alternating slitting segments and wider perforating segments. A chemical removes material from uncovered sections and completely undercuts the slitting segments to form slitting sections and undercuts the perforating segments to form higher extending perforating sections.
A method of constructing a die sheet, said method comprising the steps of:
A method of constructing a die sheet, said method comprising the steps of:
Dependencies are inferred from the claim text.