IP Library Granted Patent US 11,745,378
Granted Patent B2
US 11,745,378 · App. 17/182,312 · Granted Sep 5, 2023

Nonlinear line of weakness formed by a perforating apparatus

Inventors: Kathryn Christian Kien (Cincinnati, OH); Deborah Sue Slovut (Madeira, OH); Jeffrey Moss Vaughn (Colerain Township, OH)
Assignee: The Procter & Gamble Company
B26F1/14A47K10/16B32B3/266Y10T428/15
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Quick Facts
Patent No.
US 11,745,378
App. No.
17/182,312
Granted
Sep 5, 2023
Kind
B2
Abstract

A web may include a curvilinear line of weakness comprising a plurality of perforations and a first amplitude. The first amplitude may be less than a second amplitude of a perforating apparatus that formed the sinusoidal-shaped line of weakness comprising the first amplitude.

Claims (18)

1. A rolled absorbent product comprising:

a web comprising a sinusoidal-shaped line of weakness, the sinusoidal-shaped line of weakness comprising a plurality of perforations and a first amplitude; and

wherein the sinusoidal-shaped line of weakness has a peak force to tear of less than 840 grams, as measured according to the Tensile Strength Test Method.

2. The rolled absorbent product of claim 1 , wherein the sinusoidal-shaped line of weakness has a peak force to tear of at least 377 grams, as measured according to the Tensile Strength Test Method.

3. The rolled absorbent product of claim 1 , wherein the sinusoidal-shaped line of weakness has a failure total energy absorbed (TEA) of less than 89.1 grams*inch/inch.

4. The rolled absorbent product of claim 3 , wherein the sinusoidal-shaped line of weakness has a failure total energy absorbed (TEA) of at least 21.1 grams*inch/inch.

5. The rolled absorbent product of claim 1 , wherein the sinusoidal-shaped line of weakness has a wavelength of between 0.90 inches and 1.94 inches.

6. The rolled absorbent product of claim 1 , wherein the web has multiple sinusoidal-shaped lines of weakness and the wavelengths of each sinusoidal-shaped line of weakness have an amplitude of less than about 50% of the distance between adjacent sinusoidal-shaped lines of weakness.

7. The rolled absorbent product of claim 1 , wherein perforation lengths of the plurality of perforations are between 0.032 inches and 0.106 inches.

8. A rolled absorbent product comprising:

a web comprising a curvilinear line of weakness, the curvilinear line of weakness comprising a plurality of perforations and a first amplitude; and

wherein the curvilinear line of weakness has a peak force to tear of less than 840 grams, as measured according to the Tensile Strength Test Method.

9. The rolled absorbent product of claim 1 , wherein the curvilinear line of weakness has a peak force to tear of at least 377 grams, as measured according to the Tensile Strength Test Method.

10. The rolled absorbent product of claim 1 , wherein the curvilinear line of weakness has a failure total energy absorbed (TEA) of less than 89.1 grams*inch/inch.

11. The rolled absorbent product of claim 3 , wherein the curvilinear line of weakness has a failure total energy absorbed (TEA) of at least 21.1 grams*inch/inch.

12. The rolled absorbent product of claim 1 , wherein the curvilinear line of weakness has a wavelength of between 0.90 inches and 1.94 inches.

13. The rolled absorbent product of claim 1 , wherein the web has multiple curvilinear lines of weakness and the wavelengths of each curvilinear line of weakness have an amplitude of less than about 50% of the distance between adjacent curvilinear lines of weakness.

14. The rolled absorbent product of claim 1 , wherein perforation lengths of the plurality of perforations are between 0.032 inches and 0.106 inches.

Continuity (4)
Continuation 15984820 · May 21, 2018
Continuation 14301415 · Jun 11, 2014
Provisional Application 61834126 · Jun 12, 2013
Related Publication 20210197415A1 · Jul 1, 2021