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1. (WO2019005732) APPARATUS AND METHOD FOR SHEET SEPARATION WITH PULLING FORCE MEASUREMENT
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What is claimed is:

1. An apparatus for separating a glass sheet from a glass ribbon comprising:

a gripping tool configured to impart a pulling force on the glass ribbon sufficient to separate the glass sheet from the glass ribbon, wherein the gripping tool comprises at least one force measurement device configured to take a plurality of force measurements while the gripping tool imparts a pulling force on the glass ribbon.

2. The apparatus of claim 1, wherein the gripping tool comprises a plurality of gripping elements.

3. The apparatus of claims 1 or 2, wherein each of the gripping elements

comprises a vacuum cup.

4. The apparatus of claims 2 or 3, wherein the gripping tool comprises four corner regions and each comer region comprises a gripping element.

5. The apparatus of any one of claims 2 to 4, wherein two or more gripping

elements are associated with corresponding force measurement devices.

6. The apparatus of any one of claims 1 to 5, wherein the at least one force

measurement device comprises a load cell.

7. The apparatus of any one of claims 1 to 6, wherein the gripping tool comprises a sheet tensioning mechanism.

8. The apparatus of any one of claims 1 to 7, wherein the apparatus further

comprises a scoring mechanism.

9. A gripping tool configured to impart a pulling force on a glass ribbon wherein the gripping tool comprises at least one force measurement device configured to take a plurality of force measurements while the gripping tool imparts a pulling force on the glass ribbon.

10. The gripping tool of claim 9, wherein the gripping tool comprises a plurality of gripping elements.

11. The gripping tool of claims 9 or 10, wherein each of the gripping elements comprises a vacuum cup.

12. The gripping tool of claims 10 or 11 , wherein the gripping tool comprises four corner regions and each corner region comprises a gripping element.

13. The gripping tool of any one of claims 10 to 12, wherein two or more gripping elements are associated with corresponding force measurement devices.

14. The gripping tool of any one of claims 9 to 13, wherein the at least one force measurement device comprises a load cell.

15. The gripping tool of any one of claims 9 to 14, wherein the gripping tool comprises a sheet tensioning mechanism.

16. A method of separating a glass sheet from a glass ribbon comprising imparting a pulling force on the glass ribbon with a gripping tool, wherein the pulling force is sufficient to separate the glass sheet from the glass ribbon and wherein the gripping tool comprises at least one force measurement device that takes a plurality of force measurements while the gripping tool imparts a pulling force on the glass ribbon.

17. The method of claim 16, wherein the gripping tool comprises a plurality of gripping elements.

18. The method of claims 16 or 17, wherein each of the gripping elements

comprises a vacuum cup.

19. The method of claims 17 or 18, wherein the gripping tool comprises four corner regions and each comer region comprises a gripping element.

20. The method of any one of claims 17 to 19, wherein two or more gripping elements are associated with corresponding force measurement devices.

21. The method of claim 20, wherein the method further comprises analyzing the plurality of force measurements.

22. The method of any one of claims 16 to 21 , wherein the at least one force measurement device comprises a load cell.

23. The method of any one of claims 16 to 22, wherein the method further

comprises tensioning the glass ribbon with a sheet tensioning mechanism.