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1. WO2007010409 - FLOORING SYSTEM INCLUDING A PREGLUE

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We claim:
1. A surface element, having at least one of a tongue and a groove, comprising: a dry glue disposed on at least one surface of the flooring element,
wherein, when activated, said dry glue exhibits a creep strength of between 1 and 50 kN/m, when measured with a gap less than 0.1mm and a pull rate of 0.02 mm/min.

2. The surface element of claim 1 , wherein the dry glue is a preglue.

3. The surface element of claim 1 or 2, wherein, when activated, said dry glue exhibits a creep strength of between 7 and 20 kN/m, when measured with a gap less than 0. lmm and a pull rate of 0.02 mm/min.

4. The surface element of any of the preceding claims, wherein said dry glue when activated, further exhibits at least one property selected from the group consisting of:
tensile strength of 7-20 kN/m when measured with a gap less than 0.1 mm and a pull rate of 2 mm/min;
storage stability of at least one year;
low initial tack value; and
set time of at least 45 minutes.

5. The surface element of any of the preceding claims, wherein said dry glue when activated, further exhibits each of:
a tensile strength of 7-20 kN/m when measured with a gap less than 0.1 mm and a pull rate of 2 mm/min;
a storage stability of at least one year;
a low initial tack value; and
a set time of at least 45 minutes.

6. The surface element of any of the preceding claims, wherein said dry glue is positioned on said at least one of a tongue and a groove.

7. The surface element of any of the preceding claims, wherein said dry glue comprises at least one component selected from the group consisting of:
a monomer;

an initiator;
an activator; and
a catalyst.

8. The surface element of claim 7, wherein said at least one of said at least one component is encapsulated.

9. The surface element of claim 7 or 8, wherein said at least one component is said monomer.

10. The surface element of any of claims 6-9, wherein said dry glue further comprises a second component selected from the group consisting of:
a monomer;
an initiator;
an activator; and
a catalyst,
wherein said second component is not encapsulated with said first component.

11. The surface element of claim 10, wherein said second component is encapsulated.

12. The surface element of any of claims 1-11, wherein the surface element is a flooring element, and comprises:
a core material;
a decorative surface on the core material, and
a wear layer disposed on the decorative surface.

13. A surface system comprising:
a plurality of surface elements according to any of the preceding claims, wherein at least one of said plurality of flooring elements comprises a tongue and at least one of said plurality of flooring elements comprises a groove.

14. The surface system of claim 13, wherein said dry glue comprises at least two components selected from the group consisting of: a monomer;
an initiator;
an activator; and
a catalyst,
wherein at least one component is present on said tongue and at least one component is present in said groove.

15. The surface system of claim 14, wherein said at least one component on said tongue is different than said at least one component in said groove.

16. The surface system of claim 14 or 15, wherein at least one of said components is encapsulated.

17. The surface system of claim 16, wherein said encapsulated component is said monomer.

18. The surface system of claim 15, wherein said encapsulated monomer is present on one of said tongue and said groove, and at least one selected from the group consisting of an initiator; an activator; and a catalyst is present on the other of said tongue and said groove.

19. The surface system of any of claims 11-18, wherein at least one of said tongue and said groove comprise locking elements.

20. A method of forming a substantially planar surface comprising:
providing a first surface element of any of claims 1-12;
activating said dry glue; and
joining said surface element with a second element.

21. The method of claim 20, wherein the dry glue further exhibits at least one property selected from the group consisting of:
tensile strength of 7-20 kN/m when measured with a gap less than 0.1 mm and a pull rate of 2 mm/min;
storage stability of at least one year;

low initial tack value; and
set time of at least 45 minutes.

22. The method of claim 21 , wherein said second surface element is a surface element of any of the preceding claims.

23. The method of claim 20 or 21, wherein said first surface element comprises a tongue and said second surface element comprises a groove, wherein at least first component of said preglue is present on at least one of said tongue and said groove.

24. The method of any of claims 20-23, wherein said activating comprises mating said tongue and said groove.

25. A method of forming a substantially planar flooring system comprising:
providing a first flooring element having a preglue on at least one surface of said first flooring element thereon, wherein the preglue exhibits a creep strength of between 1 and 50 fcN/m, when measured with a gap less than 0.1mm and a pull rate of 0.02 mm/min;
activating the preglue; and
joining the first flooring element with a second flooring element.

26. The method of claim 25, wherein the preglue exhibits a creep strength of between 7 and 20 kN/m, when measured with a gap less than 0.1mm and a pull rate of 0.02 mm/min

27. The method of claim 25 or 26, wherein the preglue further exhibits at least one property selected from the group consisting of:
tensile strength of 7-20 kN/m when measured with a gap less than 0.1 mm and a pull rate of 2 mm/min;
storage stability of at least one year;
low initial tack value; and
set time of at least 45 minutes.

28. The method of any of claims 25-27, wherein said activating comprises rupturing microbaloons containing at least one component of the preglue.

29. The method of any of claims 25-28, wherein said activating comprises mating a tongue-and-groove system of the first and second flooring elements.

30. The method of any of claims 25-29, wherein said activating comprises contacting a first component of the preglue, the first component positioned on the first flooring element, with a second component of the preglue, the second component positioned on the second flooring element.