Process for manufacturing absorbent sanitary paper products

Patent metadata

Field	Value
Publication number	US-9517288-B2
Application number	US-201614994771-A
Country	US
Kind code	B2
Filing date	Jan 13, 2016
Priority date	Jan 30, 2014
Publication date	Dec 13, 2016
Grant date	Dec 13, 2016

Abstract

A method of manufacturing an absorbent sanitary paper product having a machine direction, a cross-machine direction orthogonal and co-planar thereto, and a Z-direction orthogonal to both the machine- and cross-machine directions is disclosed. The method comprises the steps of: a. providing a first network of fibers having a first and a second side, each fiber of the first network of fibers having a longitudinal axis generally disposed within the plane comprising the machine- and cross-machine-directions; b. applying a first bonding layer in a first pattern to one of the first and second sides of the first network of fibers; and, c. applying a first second network of fibers to the first bonding layer, the first second network of fibers comprising a combination of a first plurality of fibers and a second plurality of fibers. The first and second pluralities of fibers are different.

First claim

What is claimed is:

1. A method of manufacturing an absorbent sanitary paper product having a machine direction, a cross-machine direction orthogonal and co-planar thereto, and a Z-direction orthogonal to both the machine- and cross-machine directions, said method comprising the steps of:
providing a first network of fibers having a first and a second side, each fiber of said first network of fibers having a longitudinal axis generally disposed within the plane comprising the machine- and cross-machine-directions;
applying a first bonding layer in a first pattern to one of said first and second sides of said first network of fibers; and,
applying a first second network of fibers to said first bonding layer, each fiber of said first second network of fibers having a longitudinal axis generally disposed within the plane comprising the Z-direction, said first second network of fibers comprising a combination of a first plurality of fibers and a second plurality of fibers, said first and second pluralities of fibers being different.

2. The method of claim 1 further comprising the steps of applying a second bonding layer to one of said first and second sides of said first network of fibers and applying a second second network of fibers to said second bonding layer.

3. The method of claim 2 further comprising the step of placing said first network of fibers into proximate contacting engagement with a third network of fibers, each fiber of said third network of fibers having a longitudinal axis generally disposed within the plane comprising the machine- and cross-machine-directions.

4. The method of claim 3 wherein said first bonding layer is applied to said first side of said first network of fibers and said second bonding layer is applied to said first side of said first network of fibers, and said third network of fibers is in proximate contacting engagement with said second side of said first network of fibers, said method further comprising the steps of:
prior to providing said third network of fibers in proximate contacting engagement with said second side of said first network of fibers, applying a third bonding layer to said second side of said first network of fibers; and
applying a third second network of fibers to said third bonding layer.

5. The method of claim 4 further comprising the steps of:
applying a fourth bonding layer to said side of said third network of fibers in proximate contacting engagement with said second side of said first network of fibers; and
applying a fourth second network of fibers to said fourth bonding layer.

6. The method of claim 5 wherein said first second network of fibers comprises a first and second portion of fibers, said first and second portion of fibers being different, wherein said method further comprises the steps of:
applying said first portion of fibers to said first bonding layer; and,
applying said second portion of fibers to said first bonding layer.

7. The method of claim 1 further comprising the step of:
further processing said absorbent sanitary paper product with a process selected from the group consisting of embossing, printing, perforating, slitting, folding, winding, combinations thereof.

8. A method of manufacturing an absorbent sanitary paper product having a machine direction, a cross-machine direction orthogonal and co-planar thereto, and a Z-direction orthogonal to both the machine- and cross-machine directions, said method comprising the steps of:
providing a first network of fibers, each fiber of said first network of fibers having a longitudinal axis generally disposed within the plane comprising the machine- and cross-machine-directions;
applying a first bonding layer to said first side of said first network of fibers;
applying a first second network of fibers to said first bonding layer, each fiber of said first second network of fibers having a longitudinal axis generally disposed within the plane comprising the Z-direction and comprising a combination of a first plurality of fibers and a second plurality of fibers, said first and second pluralities of fibers being different; and,
applying a second bonding layer to said first side of first second network of fibers and applying a second second network of fibers to said second bonding layer each fiber of said second second network of fibers having a longitudinal axis generally disposed within the plane comprising the Z-direction.

9. The method of claim 8 further comprising the step of placing said second side of said first network of fibers into contacting engagement with a third network of fibers, each fiber of said third network of fibers having a longitudinal axis generally disposed within the plane comprising the machine- and cross-machine-directions.

10. The method of claim 9 further comprising the steps of:
prior to providing said third network of fibers in proximate contacting engagement with said second side of said first network of fibers, applying a third bonding layer to said second side of said first network of fibers; and
applying a third second network of fibers to said third bonding layer.

11. The method of claim 10 further comprising the steps of:
prior to providing said third network of fibers in proximate contacting engagement with said second side of said first network of fibers, applying a fourth bonding layer to said side of said third network of fibers in proximate contacting engagement with said second side of said first network of fibers; and
applying a fourth second network of fibers to said fourth bonding layer.

12. The method of claim 8 wherein said first second network of fibers comprises a first and second portion of fibers, said first and second portion of fibers being different, wherein said method further comprises the steps of:
applying said first portion of fibers to said first bonding layer; and,
applying said second portion of fibers to said first bonding layer.

13. The method of claim 8 further comprising the step of:
further processing said absorbent sanitary paper product with a process selected from the group consisting of embossing, printing, perforating, slitting, folding, winding, combinations thereof.

14. A method of manufacturing an absorbent sanitary paper product having a machine direction, a cross-machine direction orthogonal and co-planar thereto, and a Z-direction orthogonal to both the machine- and cross-machine directions, said method comprising the steps of:
providing a first network of fibers, each fiber of said first network of fibers having a longitudinal axis generally disposed within the plane comprising the machine- and cross-machine-directions;
applying a first bonding layer to said first side of said first network of fibers;
applying a first second network of fibers to said first bonding layer, said first second network of fibers comprising a combination of a first plurality of fibers and a second plurality of fibers, said first and second pluralities of fibers being different each fiber of said first and second pluralities of fibers having a longitudinal axis generally disposed within the plane comprising the Z-direction; and,
applying a second bonding layer to said second side of first second network of fibers and applying a second second network of fibers to said second bonding layer.

15. The method of claim 14 further comprising the step of placing said second second network of fibers disposed upon said second side of said first network of fibers into contacting engagement with a third network of fibers, each fiber of said third network of fibers having a longitudinal axis generally disposed within

Assignees

• Procter & Gamble

Inventors

• Byrne Thomas Timothy
• Mcneil Kevin Benson
• Kien Kathryn Christian

Classifications

• D04H11/00

  Non-woven pile fabrics (layered products forming non-woven pile fabrics B32B) · CPC title

• D21H27/32 Primary

  with materials applied between the sheets (attaching together paper or cardboard sheets B31F5/00; adhesives C09J) · CPC title

• D21H11/04

  Kraft or sulfate pulp · CPC title

• D04H1/74

  the fibres being orientated, e.g. in parallel {(anisotropic fleeces)} · CPC title

• D21H27/02

  Patterned paper (patterned coatings D21H19/66; embossing B31F1/07; prepared on the paper-making machines D21F11/00) · CPC title