Method for perforating a nonlinear line of weakness
AssigneeThe Procter & Gamble Company
InventorsDeborah Sue Slovut, Laura Marie Tanno, Kathryn Christian Kien
Life of this patent
Estimating the term…
Abstract
A method for providing a nonlinear line of weakness on a web material including providing: a base, a support, a blade, and a driving means. The base may comprise at least one counter component having a length (LCC) where the counter component comprises a nonlinear shape having a shape width (W) and may have a plurality of teeth. The support may be operatively engaged with the base. The blade may have a length (LB) and may be disposed on the support so as to either contact or to come in close proximity with the counter component. At least one of the counter component and the blade may have a nonlinear shape.
Claims20
An apparatus for providing a nonlinear line of weakness on a web material, the apparatus comprising:
- a base comprising at least one counter component having a length (LCC) wherein the counter component comprises a nonlinear shape having-a shape width (W) and a plurality of teeth;
- a support operatively engaged with the base;
- a blade having a length (LB) and being disposed on the support so as to either contact or to come in close proximity with the counter component;
- wherein at least one of the counter component and the blade has a nonlinear shape;
- wherein the base comprises a cylindrical base having a base longitudinal axis, wherein the base rotates about the base longitudinal axis, and the base longitudinal axis runs substantially perpendicular to a machine direction;
- and
- wherein the counter component is helically mounted on the cylindrical base at an angle of greater than 0 degrees to about 45 degrees to the base longitudinal axis.
An apparatus for providing a nonlinear line of weakness on a web material, the apparatus comprising:
- a base comprising at least one counter component having a length (LCC) wherein the counter component comprises a nonlinear shape having-a shape width (W);
- a support operatively engaged with the base;
- a blade having a length (LB) and being disposed on the support so as to either contact or to come in close proximity with the counter component;
- wherein at least one of the counter component and the blade has a nonlinear shape;
- wherein at least one of the counter component and the blade comprises multiple segments;
- wherein at least one of the counter component and the blade comprises teeth;
- wherein the base comprises a cylindrical base having a base longitudinal axis, wherein the base rotates about the base longitudinal axis, and the base longitudinal axis runs substantially perpendicular to a machine direction;
- and
- wherein the counter component is helically mounted on the cylindrical base at an angle of from about 2 degrees to about 20 degrees with respect to the base longitudinal axis.
An apparatus for providing a nonlinear line of weakness on a web material, the apparatus comprising:
- a base comprising at least one counter component having a length (LCC) wherein the counter component comprises a nonlinear shape having-a shape width (W);
- a support operatively engaged with the base;
- a blade having a length (LB) and being disposed on the support so as to either contact or to come in close proximity with the counter component;
- wherein at least one of the counter component and the blade has a nonlinear shape;
- wherein at least one of the counter component and the blade comprises multiple segments;
- wherein at least one of the counter component and the blade comprises teeth;
- and
- wherein the base comprises a cylindrical base having a base longitudinal axis, wherein the base rotates about the base longitudinal axis, and the base longitudinal axis runs substantially perpendicular to a machine direction.
Dependencies are inferred from the claim text.