Fabric

Patent metadata

Field	Value
Publication number	US-11280048-B2
Application number	US-201816649429-A
Country	US
Kind code	B2
Filing date	Sep 25, 2018
Priority date	Sep 27, 2017
Publication date	Mar 22, 2022
Grant date	Mar 22, 2022

Abstract

A fabric clothing, in particular a press felt, for use in a machine for producing a fibrous web, contains a woven fabric strip having interwoven longitudinal threads and cross threads, as well as having a first and a second longitudinal end. The two longitudinal ends of the woven fabric strip are connected to one another in a connection zone. Provision is made that the two longitudinal ends are welded to one another by a transmission welding, in particular by a laser transmission welding.

First claim

The invention claimed is:

1. A fabric clothing for use in a machine for producing a fibrous web, the fabric clothing comprising:
a woven fabric strip having two longitudinal ends including a first longitudinal end and a second longitudinal end and interwoven longitudinal threads and cross threads, wherein said two longitudinal ends being connected to one another in a connection zone, wherein said two longitudinal ends are welded to one another by means of transmission welding; and
at least one connection element which by means of the transmission welding is connected to at least some of said longitudinal threads of both of said longitudinal ends, said at least one connection element is connected to said woven fabric strip only by way of a welded connection, said at least one connection element having a surface formed of a material that absorbs light;
said at least one connection element located on only one side of said woven fabric strip.

2. The fabric clothing according to claim 1 , wherein said connection zone is configured in such a manner that at least one of said cross threads, while configuring free ends of said longitudinal threads, are removed on at least one of said longitudinal ends of said woven fabric strip, and said at least one connection element which by means of the transmission welding is welded to at least some of said free ends of both of said longitudinal ends, and in that a force transmission between said two longitudinal ends takes place only by way of said at least one connection element.

3. The fabric clothing according to claim 2 , wherein all of said free ends of both of said longitudinal ends contact one another in a region of said connection zone.

4. The fabric clothing according to claim 2 , wherein said free ends of said longitudinal threads of one or both said longitudinal ends are of dissimilar lengths.

5. The fabric clothing according to claim 1 , wherein said at least one connection element is composed of at least one thread or a tape which is oriented substantially in a cross direction of said woven fabric strip.

6. The fabric clothing according to claim 1 , wherein said at least one connection element is at least two connection elements, three connection elements, or more than three connection elements.

7. The fabric clothing according to claim 6 , wherein said connection elements are disposed on an upper side as well as on a lower side of said connection zone, or in that all of said connection elements are disposed on one side of said connection zone.

8. The fabric clothing according to claim 1 , wherein said cross threads include absorbent cross threads and at least one of said absorbent cross threads which are welded to at least some of said longitudinal threads are woven into said woven fabric strip.

9. The fabric clothing according to claim 1 , wherein said at least one connection element contacts or is welded to only part of said longitudinal threads of each of said of longitudinal ends.

10. The fabric clothing according to claim 1 , wherein said material of said surface of said at least one connection element absorbs light that has a wavelength between 780 nm and 1100 nm.

11. The fabric clothing according to claim 1 , wherein said connection zone has a permeability which differs from a permeability of a remaining part of said woven fabric strip by less than 30%.

12. The fabric clothing according to claim 1 , wherein:
the fabric clothing is a press felt; and
the transmission welding is a laser transmission welding.

13. The fabric clothing according to claim 1 , wherein said connection zone is configured in such a manner that at least one of said cross threads, while configuring free ends of said longitudinal threads, are removed on both of said longitudinal ends of said woven fabric strip, and said at least one connection element which by means of the transmission welding is welded to at least some of said free ends of both of said longitudinal ends, and in that a force transmission between said two longitudinal ends takes place only by way of said at least one connection element.

14. The fabric clothing according to claim 1 , wherein said at least one connection element contacts or is welded to fewer than 75% of said longitudinal threads of each of said longitudinal ends.

15. The fabric clothing according to claim 1 , wherein said at least one connection element contacts or is welded to fewer than 50% of said longitudinal threads of each of said longitudinal ends.

16. The fabric clothing according to claim 1 , wherein said connection element has a surface formed of a material which absorbs light from a wavelength range between 800 nm and 1000 nm.

Assignees

• Voith Patent Gmbh

Inventors

• Malmquist Johan
• Eberhardt Robert
• Klaschka Susanne
• Wich Torsten

Classifications

• D21F1/0054 Primary

  Seams thereof · CPC title

• B29C66/4322 Primary

  by joining a single sheet to itself (B29C66/4332 takes precedence) · CPC title

• B29L2031/737

  Articles provided with holes, e.g. grids, sieves (nets B29L2028/00) · CPC title

• B29C65/1635

  at least passing through one of the parts to be joined, i.e. laser transmission welding · CPC title

• B29L2031/709

  Articles shaped in a closed loop, e.g. conveyor belts · CPC title