IP Library › Granted Patent US 11,661,301
Granted Patent B2
US 11,661,301 · App. 17/849,844 · Granted May 30, 2023

Method for perforating a nonlinear line of weakness

Inventors: Deborah Sue Slovut (Madeira, OH); Laura Marie Tanno (Cincinnati, OH); Kathryn Christian Kien (Cincinnati, OH)
Assignee: The Procter & Gamble Company
B65H35/08B26D7/26B26D7/265B26D7/2628B26F1/20B26D2007/2664B26F1/22
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 11,661,301
App. No.
17/849,844
Granted
May 30, 2023
Kind
B2
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 (L CC ) where the counter component comprises a nonlinear shape having a shape width (W). The support may be operatively engaged with the base. The blade may have a length (L B ) 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. The driving means may be associated with one of the support or the base to reciprocally shift the one of the support or the base with respect to the other of the base or the support for a distance (D) in a shifting direction.

Claims (25)

1. 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 (L cc ) 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 (L B ) 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; and

a driving means associated with one of the support or the base to reciprocally shift the one of the support or the base with respect to the other of the base or the support for a distance (D) in a shifting direction.

2. The apparatus of claim 1 , wherein the support is movable with respect to the base.

3. The apparatus of claim 1 , wherein the base is movable with respect to the support.

4. The apparatus of claim 1 , 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.

5. The apparatus of claim 4 , 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.

6. The apparatus of claim 4 , 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.

7. The apparatus of claim 1 , wherein the nonlinear shape is periodic and comprises a wavelength, and the shape width (W) is substantially equivalent to the wavelength.

8. The apparatus of claim 1 , wherein the base is stationary in a cross machine direction.

9. The apparatus of claim 1 , wherein the driving means is associated with the support.

10. The apparatus of claim 1 , wherein the counter component comprises an anvil.

11. The apparatus of claim 1 , wherein the nonlinear shape is a sinusoidal shape.

12. The apparatus of claim 1 , wherein the counter component comprises a nonlinear shape.

13. The apparatus of claim 1 , wherein the blade has a plurality of teeth.

14. The apparatus of claim 1 , wherein the support is reciprocally shifted for at least half of the shape width (W).

15. The apparatus of claim 1 , wherein the base is reciprocally shifted for at least half of the shape width (W).

16. The apparatus of claim 1 , 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.

17. The apparatus of claim 16 , 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.

18. The apparatus of claim 16 , 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.

19. The apparatus of claim 1 , wherein the nonlinear shape is periodic and comprises a wavelength, and the shape width (W) is substantially equivalent to the wavelength.

20. The apparatus of claim 1 , wherein the counter component comprises an anvil.

Continuity (5)
Continuation 17124540 · Dec 17, 2020
Continuation 15923058 · Mar 16, 2018
Continuation 15072412 · Mar 17, 2016
Provisional Application 62134039 · Mar 17, 2015
Related Publication 20220332533A1 · Oct 20, 2022
Cited By (2)
US 12,365,559 US 12,540,018