MICROSTRUCTURED MONOFILAMENT AND TWINED FILAMENTS

Abstract

An apparatus for the production of a fibrous web, in particular a paper web or paperboard web, having a belt formed from individual threads which are connected together, in particular woven together, whereby the surface of the threads is constructed to be structured in order to improve the paper quality and the production flow.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention is further described in the detailed description which follows, in reference to the noted plurality of drawings by way of non-limiting examples of preferred embodiments of the present invention, in which like numerals represent like elements throughout the several views of the drawings, and wherein:

FIGS. 1 to 6 show a plan view of a section of a thread with a surface structure according to various embodiments of the present invention; and

FIGS. 7 to 10 show details from surfaces of threads structured according to various embodiments of the present invention.

Claims

1. A belt for the production of a fibrous web, comprising: individual threads which are connected together,wherein a surface of the threads is constructed to be structured.

2. The belt according to claim 1, wherein the individual threads are woven together.

3. The belt according to claim 1, wherein a surface of the threads has a microstructure.

4. The belt according to claim 1, wherein a surface of the threads has a nanostructure.

5. The belt according to claim 1, wherein the threads comprise monofilaments.

6. The belt according to claim 1, wherein the threads comprise twines.

7. The belt according to claim 1, wherein the threads have flutes in their surface.

8. The belt according to claim 7, wherein the flutes extend parallel to the longitudinal axis of the threads.

9. The belt according to claim 7, wherein the flutes extend transverse to the longitudinal axis of the threads.

10. The belt according to claim 7, wherein the flutes form an angle with the longitudinal axis of the threads.

11. The belt according to claim 7, wherein the flutes are arranged in cross shape.

12. The belt according to claim 10, wherein the flutes are arranged in a rhombic pattern.

13. The belt according to claim 10, wherein the flutes form an arrow pattern.

14. The belt according to claim 7, wherein 1 to 10 flutes are provided per micrometer of the surface of the threads.

15. The belt according to claim 1, wherein the surface of the threads is constructed like a shark's skin.

16. The belt according to claim 1, wherein the surface of the threads is constructed with individual studs.

17. The belt according to claim 1, wherein the threads have a lotus-effect surface.

18. The belt according to claim 1, wherein the threads are twisted about their own longitudinal axis or with each other.

19. The belt according to claim 1, wherein the shape, distribution and/or density of the structuring is varied over an individual thread or over the belt as a whole.

20. The belt according to claim 19, wherein the structuring on the side of the belt facing the fibrous web is finer than on the side facing away from it.

21. The belt according to claim 19, wherein a gradient of the structure density is established over the length and/or width of the belt.

22. The belt according to claim 1, wherein structured threads are used as warp threads, tie threads and/or weft threads.

23. The belt according to claim 1, wherein the belt is used in a forming mesh.

24. The belt according to claim 1, wherein the threads are thermofixed.

25. A method of using the belt according to claim 1 in a dryer fabric.

26. A method of using the belt according to claim 1 as the basic fabric of a press felt.

27. A method of making a belt for the production of a fibrous web, comprising: forming a structured surface on a plurality of individual threads, andconnecting the individual threads together to form a belt.

28. The method of making a belt according to claim 27, wherein forming a structured surface on a plurality of individual threads comprises forming flutes in the surface of the threads.

29. The method of making a belt according to claim 27, wherein forming a structured surface on a plurality of individual threads comprises forming a shark skin-like surface on the threads.

30. The method of making a belt according to claim 27, wherein forming a structured surface on a plurality of individual threads comprises forming individual studs in the surface of the threads.

31. The method of making a belt according to claim 27, wherein forming a structured surface on a plurality of individual threads comprises forming a lotus-effect surface on the threads.