Partitionable paper product

Patent metadata

Field	Value
Publication number	US-11707162-B2
Application number	US-202117452103-A
Country	US
Kind code	B2
Filing date	Oct 25, 2021
Priority date	May 26, 2015
Publication date	Jul 25, 2023
Grant date	Jul 25, 2023

Abstract

The present disclosure is directed to a paper towel product that will capably separate from the paper towel roll as a full sheet, a half sheet or a quarter sheet. A method of making a paper towel with machine direction perforations is also disclosed.

First claim

What is claimed is:

1. A partitionable paper product of at least one paper web, the product comprising:
a base sheet having a basis weight of at least 20 g/sq. meter;
at least one perforation line in the cross-machine direction having a bond length, a cut length, a percent bond area, and a perforation tensile strength of between about 450 grams/3 inches and about 950 grams/3 inches;
at least one perforation line in the machine direction having a bond length, a cut length, a percent bond area, and a perforation tensile strength of between about 750 grams/3 inches and about 1700 grams/3 inches;
wherein the perforation tensile strength of the at least one perforation line in the machine direction is greater than the perforation tensile strength of the at least one perforation line in the cross-machine direction;
wherein the at least one perforation line in the machine direction bisects the paper product into two approximately equal pieces; and
wherein the product is embossed.

2. The partitionable paper product of claim 1 , wherein the ratio of the cut length of the at least one perforation line in the cross-machine direction to the bond length of the at least one perforation line in the cross-machine direction, measured linearly in the cross-machine direction, is greater than about 3.

3. The partitionable paper product of claim 1 , wherein the ratio of the cut length of the at least one perforation line in the machine direction to the bond length of the at least one perforation line in the machine direction, measured linearly in the machine direction, is less than about 7.

4. The partitionable paper product of claim 1 , wherein the ratio of the perforation tensile strength of the at least one perforation line in the cross-machine direction to the MD dry tensile strength of the paper is from about 30% to about 40%.

5. The partitionable paper product of claim 1 , wherein the ratio of the perforation tensile strength of the at least one perforation line in the machine direction to the CD dry tensile strength of the paper is from about 30% to about 60%.

6. The partitionable paper product of claim 1 , wherein the percent bond area of the perforations in the cross-machine direction is at least about 15%.

7. The partitionable paper product of claim 1 , wherein the percent bond area of the perforations in the machine direction is at least about 16%.

8. The partitionable paper product of claim 1 , wherein the ratio of the percent bond area of the at least one perforation line in the machine direction to the percent bond area of the at least one perforation line in the cross-machine direction is greater than 1.0.

9. The partitionable paper product of claim 1 , wherein the product is a multi-ply product.

10. The partitionable paper product of claim 1 , wherein the at least one paper web is produced by through air drying.

11. The partitionable paper product of claim 1 , wherein the product has an SAT absorbent capacity of at least about 300 grams/sq. meter.

12. The partitionable paper product of claim 11 , wherein the product has an SAT absorbent capacity of at least about 550 grams/sq. meter.

13. The partitionable paper product of claim 1 , wherein the product comprises at least two perforation lines in the cross-machine direction and wherein the at least one perforation line in the machine direction and the at least two perforation lines in the cross-machine direction intersect to form 2 squares.

14. The partitionable paper product of claim 1 , wherein the at least one perforation line in the machine direction comprises perforations having an aspect ratio of less than about 3.

15. The partitionable paper product of claim 1 , wherein the ratio of the perforation tensile strength of the at least one perforation line in the machine direction to the perforation tensile strength of the at least one perforation line in the cross-machine direction is from about 1.15 to about 1.6.

16. The partitionable paper product of claim 1 , wherein the base sheet has a basis weight of at least about 30 g/sq. meter.

17. The partitionable paper product of claim 16 , wherein the base sheet has a basis weight of at least about 45 g/sq. meter.

18. The partitionable paper product of claim 1 , wherein the two approximately equal pieces are at least 5 inches long in the cross-machine direction.

19. The partitionable paper product of claim 1 , the product comprising:
a series of sheets of a single-use absorbent paper, wherein the sheets are defined by a first set of perforations that extend in the cross-machine direction having a bond length and a second set of perforations that extend in the cross-machine direction having a bond length;
wherein the sheets include at least one set of perforations in the machine direction having a bond length and allowing the first sheet to be partitioned into smaller sheets;
wherein the bond length of the at least one set of perforations in the machine direction is longer than the bond length of the first and second sets of perforations that extend in the cross-machine direction;
wherein the perforation strength of the at least one set of perforations in the machine direction is at least 770 grams/3 inches;
wherein the perforation strength of the at least one set of perforations in the cross-machine direction is at least 450 grams/3 inches;
wherein the perforation tensile strength of the at least one set of perforations in the machine direction is greater than the perforation tensile strength of the at least one set of perforations in the cross-machine direction;
wherein the paper product has a basis weight of at least 20 g/sq. meter; and
wherein the paper product has a SAT absorbent capacity of at least 300 grams/sq. meter.

20. The partitionable paper product of claim 19 , wherein the bond length of the at least one set of perforations in the machine direction is at least 1.2 times the length of the bonds of either the first or second set of perforations in the cross-machine direction.

Assignees

• Gpcp Ip Holdings Llc

Inventors

• Olson Steven R
• Hoadley David A
• Daul Thomas J

Classifications

• A47K10/16 Primary

  Paper towels; Toilet paper; Holders therefor · CPC title

• A47G11/001

  Table napkins · CPC title

• B31F1/07 Primary

  Embossing {, i.e. producing impressions formed by locally deep-drawing, e.g. using rolls provided with complementary profiles}({B31F1/128 takes precedence;} corrugating B31F1/20; embossing in combination with printing B41F19/02, B41M1/24; typewriters for embossing B41J3/38; stamping in combination with deforming B41K3/36) · CPC title

• B32B29/00

  Layered products comprising {a layer of} paper or cardboard · CPC title

• B32B29/002

  as the main or only constituent of a layer, which is next to another layer of the same or of a different material (next to a layer of a particular substance B32B9/06; next to a bituminous or tarry layer B32B11/06; next to a water-setting substance layer B32B13/08; next to a metal layer B32B15/12; next to a glass layer B32B17/065; next to a layer formed of natural mineral fibres or particles B32B19/046; next to a wood layer B32B21/06; next to a cellulosic plastic layer B32B23/06; next to a natural or synthetic rubber layer B32B25/06; next to a synthetic resin layer B32B27/10) · CPC title