Package comprising a stack of absorbent tissue paper material and a packaging

Patent metadata

Field	Value
Publication number	US-11033156-B2
Application number	US-202016804869-A
Country	US
Kind code	B2
Filing date	Feb 28, 2020
Priority date	Jun 22, 2015
Publication date	Jun 15, 2021
Grant date	Jun 15, 2021

Abstract

A package including a stack of absorbent tissue paper material and a packaging, wherein, in the stack, the tissue material forms panels having a length, and a width perpendicular to the length, the panels being piled on top of each other to form a height extending between a first end surface and a second end surface of the stack; the absorbent tissue paper material including at least a dry crepe material, the stack, when in the package, having a selected packing density D 0 of 0.25 to 0.65 kg/dm 3 , and exerting a force along the height of the stack towards the packaging, the packaging encircling the stack so as to maintain the stack in a compressed condition with the selected packing density D 0.

First claim

The invention claimed is:

1. A package comprising a stack of absorbent tissue paper material and a packaging, wherein, in said stack, the absorbent tissue paper material forms panels having a length, and a width perpendicular to said length, said panels being piled on top of each other to form a height extending between a first end surface and a second end surface of the stack;
the absorbent tissue paper material comprising at least a dry crepe material,
the stack, when in said package, having a selected packing density D 0 of 0.25 to 0.65 kg/dm 3 , and exerting a force along the height of said stack towards the packaging, the packaging encircling said stack so as to maintain said stack in a compressed condition with said selected packing density D 0 and exert a counter force to a springback force of the stack.

2. The package according to claim 1 , wherein said absorbent tissue paper material is a combination material comprising at least one ply of a dry crepe material and one ply of another material.

3. The package according to claim 2 , wherein the selected packing density D 0 is 0.25 to 0.60 kg/dm 3 .

4. The package according to claim 1 , said packing density D 0 being >0.20 and ≤0.35 kg/dm 3 and said package displaying a piston imprinting load as described herein at 3 mm imprint level IM3 being less than 130 N or said packing density D 0 being >0.35 and ≤0.65 kg/dm 3 and said package displaying a piston imprinting load as described herein at 3 mm imprint level IM3 being less than 500 N.

5. The package according to claim 1 , said packing density D 0 being >0.20 and ≤0.35 kg/dm 3 and said package displaying a piston imprinting load as described herein at 6 mm imprint level IM6 being less than 500 N, or said packing density D 0 being >0.35 and ≤0.65 kg/dm 3 and said package displaying a piston imprinting load IM6 as described herein at 6 mm imprint level being less than 8000 N.

6. The package according to claim 1 , said packing density D 0 being >0.20 and ≤0.35 kg/dm 3 and said package displaying a piston imprinting load as described herein at 3 mm imprint level IM3 and a piston imprinting load at 10 mm imprint level IM10, wherein IM10/IM3 is greater than 3; or
said packing density D 0 being >0.35 and ≤0.65 kg/dm 3 and said package displaying a piston imprinting load as described herein at 3 mm imprint level IM3 and a piston imprinting load at 10 mm imprint level IM10, wherein IM10/IM3 is greater than 4.5.

7. The package according to claim 1 , said packing density D 0 being >0.20 and ≤0.35 kg/dm 3 and said package displaying a piston imprinting load as described herein at 3 mm imprint level IM3 and a piston imprinting load at 6 mm imprint level IM6, wherein IM6/IM3 is greater than 1.5; or
said packing density D 0 being >0.35 and ≤0.65 kg/dm 3 and said package displaying a piston imprinting load as described herein at 3 mm imprint level IM3 and a piston imprinting load at 6 mm imprint level IM6, wherein IM6/IM3 is greater than 2.

8. The package according to claim 1 , wherein said stack is a stack of folded absorbent tissue paper material.

9. The package according to claim 8 , wherein said folded absorbent tissue paper material is a continuous web material.

10. The package according to claim 9 , wherein the stack comprises at least one continuous web material being Z-folded.

11. The package according to claim 1 , wherein said packaging is encircling said stack at least in a direction along a height direction of said stack.

12. The package according to claim 1 , wherein said packaging is of a material having a tensile strength in a direction along the height of the stack being less than 10 kN/m 2 .

13. The package according to claim 1 , wherein said packaging is of a material having a tensile strength in a direction along the height of the stack being of at least 1.5 kN/m 2 .

14. The package according to claim 1 , wherein said packaging is made of a paper, non-woven or plastic material.

15. The package according to claim 1 , wherein said packaging is closed to encircle said stack by means of a seal.

16. The package according to claim 15 , wherein said seal is an adhesive seal.

17. The package according to claim 15 , wherein said seal is an ultrasonic seal or a heatseal.

18. The package according to claim 2 , wherein the selected packing density D 0 is 0.25 to 0.55 kg/dm 3 .

19. The package according to claim 2 , wherein the selected packing density D 0 is 0.30 to 0.55 kg/dm 3 .

Assignees

• Essity Hygiene & Health Ab

Inventors

• Wallenius Hans
• Welander Fredrik

Classifications

• B65B63/022 Primary

  using compressing chambers or plates moving in an endless path · CPC title

• B65B63/02 Primary

  for compressing or compacting articles or materials prior to wrapping or insertion in containers or receptacles · CPC title

• B65D85/07

  for compressible or flexible articles (for wearing apparel B65D85/18) · CPC title

• B65B63/026

  for compressing by feeding articles through a narrowing space · CPC title

• B65B25/14

  Packaging paper or like sheets, envelopes, or newspapers, in flat, folded, or rolled form · CPC title