Stack of web material for hygiene products

Patent metadata

Field	Value
Publication number	US-9808131-B2
Application number	US-201314897131-A
Country	US
Kind code	B2
Filing date	Jun 10, 2013
Priority date	Jun 10, 2013
Publication date	Nov 7, 2017
Grant date	Nov 7, 2017

Abstract

A of web material for hygiene products includes at least one folded continuous web material, and a first connector and a second connector, adapted for interconnection of the first end surface of the stack to a second end surface of another, similar stack. The first connector includes a first connection surface consisting of a first material, and the second connector includes a second connection surface consisting of a second material; said first and second materials having properties that, upon bringing said first and second surfaces into contact with each other, the surfaces attach to each other by surface adhesion so that the surfaces are repeatedly removable from and reattachable to each other while leaving the surfaces substantially unaltered, whereby a connection between a first/second connector of the stack and a second/first connector of a similar stack is accomplished.

First claim

The invention claimed is:

1. A stack of web material for hygiene products, comprising:
at least one web material being Z-folded about transverse folding lines, thereby providing panels having a length along said folding lines, and a width perpendicular to said folding lines,
said panels being piled on top of each other to form a height of said stack extending between a first end surface and a second end surface of the stack, and
said first end surface being provided with a first connector, and said second end surface being provided with a second connector, said first connector and said second connector being adapted for interconnection of the first end surface of the stack to a second end surface of another, similar stack, and/or for interconnection of the second end surface of the stack to a first end surface of another, similar stack, wherein
said first connector comprises a first smooth connection surface consisting of a first material,
said second connector comprises a second smooth connection surface consisting of a second material; and
said first material and said second material being polymer materials which have been sprayed or extruded onto the stack or which are provided in the form of a film provided on the stack and having properties so that, upon bringing said first connection surface and said second connection surface into contact with each other, the first connection surface and the second connection surface attach to each other by surface adhesion of a kind where the first connection surface and the second connection surface are repeatedly removable from and reattachable to each other while leaving the first connection surface and the second connection surface substantially unaltered,
whereby a connection between a first connector/second connector of the stack and a second connector/first connector of a similar stack is accomplished, said connection having a connection strength in a plane including the first connection surface and the second connection surface sufficient to pull the web material of the interconnected stacks,
wherein the stack is configured to be pulled through a dispenser.

2. A stack in accordance with claim 1 , wherein said connection strength is at least 1 N.

3. A stack in accordance with claim 1 , wherein said first material and said second material are selected such that, upon bringing said first connection surface or said second connection surface into contact with the web material, no surface adhesion occurs.

4. A stack in accordance with claim 1 , wherein said first material and said second material are selected such that the first connection surface and the second connection surface attach to each other by surface adhesion caused by intermolecular interactions.

5. A stack in accordance with claim 4 , wherein at least one of said first connection surface and the second connection surface displays a microstructure.

6. A stack in accordance with claim 1 , wherein said surface adhesion comprise diffusive adhesion.

7. A stack in accordance with claim 1 , wherein said surface adhesion comprise electrostatic adhesion.

8. A stack in accordance with claim 1 , wherein at least one of the first connector and the second connector consists of a homogenous piece of material forming the connection surface of a respective one of the first connector and the second connector.

9. A stack in accordance with claim 1 , wherein at least one of the first connector and the second connector comprises a layer of a material forming the connection surface of a respective one of the first connector and the second connector.

10. A stack in accordance with claim 1 , wherein at least one of the first connector and the second connector is covered by a removable release material.

11. A stack in accordance with claim 1 , comprising a fastener which fastens at least one of the first connector and the second connector to the stack.

12. A stack in accordance with claim 1 , wherein at least one of the first connector and the second connector is formed by a material being formed directly on the stack.

13. A stack in accordance with claim 1 , wherein said web material is continuous.

14. A stack in accordance with claim 1 , provided with a wrapper encircling said stack, the wrapper being slidable against said first connector and said second connector, such that the wrapper may be removed from the stack without being hindered by the first connector and said second connector.

15. A compound stack comprising a first and a second stack in accordance with claim 1 , said first stack and said second stack being interconnected via one of the first connector and the second connector of the first stack and one of the first connector and the second connector of the second stack.

16. A method for interconnecting the stack of folded web material according to claim 1 with another, similar stack, the method comprising:
bringing said first connection surface and said second connection surface into close contact with each other, so that the first connection surface and the second connection surface attach to each other by the surface adhesion.

Assignees

• Sca Hygiene Prod Ab

Inventors

• Larsson Björn
• Andersson Inger
• Elglund Gunnel

Classifications

• A47K10/42 Primary

  dispensing from a store of single sheets, e.g. stacked · CPC title

• B65D65/02

  Wrappers or flexible covers · CPC title

• B65D85/62

  for stacks of articles; for special arrangements of groups of articles · CPC title

• B65D83/0894

  the articles being positioned relative to one another or to the container in a special way, e.g. for facilitating dispensing, without additional support · CPC title

• A47K2010/428

  Details of the folds or interfolds of the sheets · CPC title