Extensible paper and its use in the production of expanded slit packaging and void fill products
US-10669086-B2 · Jun 2, 2020 · US
US11623810B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11623810-B2 |
| Application number | US-202017071422-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 15, 2020 |
| Priority date | Oct 16, 2019 |
| Publication date | Apr 11, 2023 |
| Grant date | Apr 11, 2023 |
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A pad of a plurality of sheets of expandable slit paper is provided in which the paper expands in thickness when stretched to form expanded cells, wherein the sheets of expandable slit paper are bound together along a single edge and otherwise unbound together. In some embodiments, sheets of slit sheet material are removable for use of the slit sheet material for packing items or the like with the slit sheet material in an expanded state.
Opening claim text (preview).
What is claimed is: 1. A pad, comprising: a plurality of sheets of expandable slit paper, said paper expanding in thickness when stretched to form expanded cells, wherein the sheets of expandable slit paper are bound together along a single edge and otherwise unbound together, wherein each of said plurality of sheets of expandable slit paper includes an array of slits that form said expanded cells when the respective sheet is manually pulled away from said single edge along a plane of the respective sheet, and wherein said pad includes an adhesive or connector configured to fix said pad to a table or supporting surface such that when a user manually grasps a top sheet of said plurality of sheets and pulls the top sheet in a direction away from said single edge, said pad remains fixed to said table or supporting surface while said top sheet expands to form a plurality of expanded cells. 2. The pad according to claim 1 , wherein said slits extend substantially parallel to said single edge. 3. The pad according to claim 1 , wherein each sheet of the plurality of sheets is provided with a score line proximate the region of the single edge, thereby facilitating the separation of each sheet from the pad of a plurality of sheets. 4. The pad according to claim 3 , wherein a plurality of staples are applied to the pad of a plurality of sheets. 5. The pad according to claim 3 , wherein each sheet of the plurality of sheets is provided with a score line proximate a region formed by the at least one staple, thereby facilitating the separation of each sheet from the pad of a plurality of sheets. 6. The pad according to claim 1 , wherein at least one staple is applied to the pad of a plurality of sheets. 7. The pad according to claim 1 , wherein a releasable adhesive is applied to each sheet in the region of the single edge. 8. The pad according to claim 1 , wherein an adhesive is applied to each sheet in the region of the single edge thereby binding together the plurality of sheets of expandable paper. 9. The pad according to claim 8 , wherein each sheet of the plurality of sheets is provided with a score line proximate the region of the adhesive, thereby facilitating the separation of each sheet from the pad of a plurality of sheets. 10. The pad according to claim 1 , wherein a support sheet is provided below the bottom sheet of the plurality of sheets. 11. The pad according to claim 10 , wherein the support sheet is provided with a plurality of adhesive strips placed under and attached to the support sheet for adhering the pad to a supporting surface. 12. The pad according to claim 11 , further including at least one release sheet applied to the exposed the adhesive strips. 13. The pad according to claim 10 , wherein the support sheet is a paper board sheet. 14. The pad according to claim 13 , wherein said paper board sheet is stiff or rigid. 15. The pad according to claim 10 , wherein the support sheet is a chipboard sheet. 16. The pad according to claim 1 , wherein the slit sheet paper is a Kraft paper in the range from about 40# to 60#. 17. The pad according to claim 16 , wherein the slit sheet paper has a slit pattern in the range from of approximately 0.45″ slit length, 0.17″ land length between ends of slits, and 0.11″ row width between slits to approximately 0.40″ slit length, 0.15″ land length between ends of slits, and 0.1000″ row width between slits. 18. The pad according to claim 1 , wherein the slit sheet paper has a slit pattern in the range from of approximately 0.45″ slit length, 0.17″ land length between ends of slits, and 0.11″ row width between slits to approximately 0.40″ slit length, 0.15″ land length between ends of slits, and 0.1000″ row width between slits. 19. The pad according to claim 1 , wherein the slit sheet paper has a slit pattern with slits each having a length of 0.45″ or less. 20. The pad according to claim 1 , wherein the slit sheet paper has a slit pattern with slits each having a length of 0.40″ or less. 21. The pad according to claim 1 , wherein the pad of a plurality of sheets of expandable slit paper is rolled to form a generally cylindrical configuration. 22. The pad according to claim 1 , wherein the pad of a plurality of sheets of expandable slit paper is rolled to form a roll of sheets of expandable slit paper. 23. The pad according to claim 1 , wherein said expandable slit paper is an extensible paper having an extensibility in a machine direction of at least 5%. 24. The pad according to claim 23 , wherein said expandable slit paper is an extensible paper having an extensibility in a cross direction of at least 5%. 25. The pad according to claim 1 , wherein said expandable slit paper is an extensible paper having an extensibility in a cross direction of at least 5%. 26. A method, comprising: a) providing a pad, including: a plurality of sheets of expandable slit paper, said paper expanding in thickness when stretched to form expanded cells, wherein the sheets of expandable slit paper are bound together along a single edge and otherwise unbound together; wherein each of said plurality of sheets of expandable slit paper includes an array of slits that form said expanded cells when the respective sheet is manually pulled away from said single edge along a plane of the respective sheet; b) having the user manually grasp a top sheet of said plurality of sheets and pull the top sheet in a direction away from said single edge so as to cause said top sheet to expand to form a plurality of expanded cells; and c) having the user wrap the expanded top sheet around an item. 27. The method of claim 26 , further including: a) having the user wrap the expanded top sheet around the item while the top sheet remains bound at said single edge, whereby the top sheet is maintained in an expanded state during wrapping; and b) having the user separate the expanded top sheet from being bound at said single edge after wrapping of the item. 28. The method of claim 26 , further including having the user place the wrapped item within a package or box. 29. The method of claim 26 , further including providing said slit sheet paper from an extensible paper. 30. The method of claim 29 , wherein said extensible paper has an extensibility in a machine direction of at least 5%. 31. The method of claim 29 , wherein said extensible paper has an extensibility in a cross direction of at least 5%. 32. The method of claim 29 , wherein said extensible paper has an extensibility in a machine direction of at least 5% and an extensibility in a cross direction of at least 5%. 33. A method, comprising: a) providing a pad including; a plurality of sheets of expandable slit paper, said paper expanding in thickness when stretched to form expanded cells, wherein the sheets of expandable slit paper are bound together along a single edge and otherwise unbound together, and b) having a user manually grasp a top sheet of said plurality of sheets and pull the top sheet in a direction away from said single edge so as to cause said top sheet to expand to form a plurality of expanded cells, c) prior to separating said top sheet from said pad, having the user wrap the expanded top sheet around an item, and d) having the user separate said top sheet from said pa
with means for engaging sheet perforations or slots · CPC title
characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12 · CPC title
Supports for note-pads (B42F9/00 takes precedence; underlays B43L3/00) · CPC title
characterised by a layer of regularly- arranged cells, e.g. a honeycomb structure · CPC title
having plural perforation lines, e.g. for detaching parts of the sheets · CPC title
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