Clothing

Patent metadata

Field	Value
Publication number	US-12286753-B2
Application number	US-202017783842-A
Country	US
Kind code	B2
Filing date	Nov 11, 2020
Priority date	Dec 18, 2019
Publication date	Apr 29, 2025
Grant date	Apr 29, 2025

Abstract

A clothing or seamed felt for a pressing section of a machine producing a fibrous web includes at least one base structure and at least one staple fiber layer is disposed on the base structure. The staple fiber layer is disposed on a side facing the fibrous web and/or the machine. At least one seam zone has seam loops connected to one another by at least one pintle or seam wire making the clothing endless. The staple fiber layer is divided in the region of the seam zone by at least one cut forming a seam flap and a seam wedge or gusset. At least one connecting element is inserted between the seam flap and the seam wedge. The connecting element is materially connected, in particular welded, to staple fibers of the seam flap and/or of the seam wedge. A method for using the clothing is also provided.

First claim

The invention claimed is:

1. A clothing for use in a pressing part of a machine for producing a fibrous web, the clothing comprising:
at least one base structure;
at least one staple fiber layer disposed on said at least one base structure, said at least one staple fiber layer disposed on at least one of a side facing toward the fibrous web or a side facing toward the machine;
at least one seam zone having seam loops;
at least one pintle interconnecting said seam loops make the clothing endless;
said at least one staple fiber layer having at least one cut in a region of said seam zone, said at least one cut dividing said at least one staple fiber layer and forming a seam flap and a seam wedge;
at least one connecting element inserted between said seam flap and said seam wedge, said at least one connecting element having a shape of a thread, a monofilament, a multifilament bundle or a twine, said at least one connecting element extending over between half of a width and all of the width of the clothing in a transverse direction of the machine, and said at least one connecting element being welded to staple fibers of at least one of said seam flap or said seam wedge; and
said at least one connecting element including a polymer material at least mostly absorbing light with a wavelength in a near infrared (NIR) range of from 780 nm to 3 μm.

2. The clothing according to claim 1 , wherein said polymer material at least mostly absorbs light with a wavelength in a NIR range of from 780 nm to 1300 nm.

3. The clothing according to claim 1 , wherein said at least one connecting element has a length of 10 mm or more in a longitudinal direction.

4. The clothing according to claim 1 , wherein said at least one connecting element has a length of more than 20 mm in a longitudinal direction.

5. The clothing according to claim 1 , wherein said at least one connecting element has a length of more than 2 m in a longitudinal direction.

6. The clothing according to claim 1 , wherein said at least one connecting element includes a multiplicity of connecting elements being welded to said staple fibers of at least one of said seam flap or said seam wedge and inserted between said seam flap and said seam wedge.

7. A method for using a clothing in a pressing part of a machine for producing a fibrous web, the method comprising: providing the clothing according to claim 1 ; initially drawing the clothing into the pressing part of the machine for producing the fibrous web, before making the clothing endless by closing a pintle seam; and subsequently welding said at least one connecting element to said staple fibers of at least one of said seam flap or said seam wedge.

8. The method according to claim 7 , which further comprises connecting the at least one connecting element by using NIR transmission welding.

9. A clothing for use in a pressing part of a machine for producing a fibrous web, the clothing comprising:
at least one base structure;
at least one staple fiber layer disposed on said at least one base structure, said at least one staple fiber layer disposed on at least one of a side facing toward the fibrous web or a side facing toward the machine;
at least one seam zone having seam loops;
at least one pintle interconnecting said seam loops make the clothing endless;
said at least one staple fiber layer having at least one cut in a region of said seam zone, said at least one cut dividing said at least one staple fiber layer and forming a seam flap and a seam wedge;
at least one connecting element inserted between said seam flap and said seam wedge, said at least one connecting element having a shape of a band, a textile band, a nonwoven, a sheet or a foam, said at least one connecting element extending over between half of a width and all of the width of the clothing in a transverse direction of the machine, and said at least one connecting element being welded to staple fibers of at least one of said seam flap or said seam wedge; and
said at least one connecting element including a polymer material at least mostly absorbing light with a wavelength in a near infrared (NIR) range of from 780 nm to 3 μm.

10. The clothing according to claim 9 , wherein said polymer material at least mostly absorbs light with a wavelength in a NIR range of from 780 nm to 1300 nm.

11. The clothing according to claim 9 , wherein said at least one connecting element has a length of 10 mm or more in a longitudinal direction.

12. The clothing according to claim 9 , wherein said at least one connecting element has a length of more than 20 mm in a longitudinal direction.

13. The clothing according to claim 9 , wherein said at least one connecting element has a length of more than 2 m in a longitudinal direction.

14. The clothing according to claim 9 , wherein said at least one connecting element includes a multiplicity of connecting elements being welded to said staple fibers of at least one of said seam flap or said seam wedge and inserted between said seam flap and said seam wedge.

Assignees

• Voith Patent Gmbh

Inventors

• Eberhardt Robert
• Englet Tobias

Classifications

• D21F7/083

  Multi-layer felts · CPC title

• D21F7/10 Primary

  Seams thereof · CPC title