Edge protector for a papermachine clothing

Patent metadata

Field	Value
Publication number	US-11525213-B2
Application number	US-201917420552-A
Country	US
Kind code	B2
Filing date	Dec 9, 2019
Priority date	Jan 8, 2019
Publication date	Dec 13, 2022
Grant date	Dec 13, 2022

Abstract

A method for producing an edge protector on a clothing for a machine producing or finishing a fibrous, paper, cardboard or tissue web, includes providing a clothing formed substantially from a woven fabric with crossing weft and warp threads and opposite side edges, applying a film strip onto a surface of one side edge and, immediately before bringing the film strip into contact with the clothing, surfaces of the film strip and the clothing facing each other are heated to slightly melt the surfaces. A pressing force exerted on the film strip applied to the surface of one of the side edges, results in the film strip penetrating at least partially into the woven fabric. That side edge of the clothing with the film strip is cooled, resulting in a stable, particularly integrally joined and form-locking connection between the film strip and the side edge of the clothing.

First claim

The invention claimed is:

1. A method for producing an edge protector on a clothing for a machine for producing or finishing a fibrous, paper, board or tissue web, the method comprising:
providing the clothing to be provided with the edge protector, the clothing being substantially formed from a woven material with crossing weft threads and warp threads and two side edges lying opposite one another;
applying a film strip to a surface of one of the two side edges of the clothing by heating a surface of the film strip facing the clothing and a surface of the clothing facing the film strip, immediately before bringing the film strip into contact with the clothing, to slightly melt the surface of the film strip and the surface of the clothing;
exerting a pressing force on the film strip applied to the surface of one of the two side edges of the clothing, causing the film strip to penetrate at least partially into the woven material; and
cooling the side edge of the clothing provided with the film strip, forming a stable connection between the film strip and the side edge of the clothing.

2. The method according to claim 1 , which further comprises forming the connection between the film strip and the side edge of the clothing to be integral and form-locking.

3. The method according to claim 1 , which further comprises trimming the side edge provided with the film strip.

4. The method according to claim 1 , which further comprises also providing a second side edge of the two side edges of the clothing with an edge protector by carrying out the applying, exerting and cooling steps.

5. The method according to claim 1 , which further comprises forming the clothing and the film strip from substantially identical basic materials.

6. The method according to claim 1 , which further comprises forming the film strip at least predominantly from PET.

7. The method according to claim 1 , which further comprises providing the film strip with at least one of a width between 20 mm and 50 mm or a thickness between 50 μm and 400 μm.

8. The method according to claim 1 , which further comprises providing the film strip with at least one of a width between 30 mm and 40 mm or a thickness between 100 μm and 350 μm.

9. The method according to claim 1 , which further comprises using a jet of hot air to carry out the step of heating the surface of the film strip facing the clothing and the surface of the clothing facing the film strip.

10. The method according to claim 9 , which further comprises directing the jet of hot air into an inlet gap formed between the film strip and the clothing.

11. The method according to claim 1 , which further comprises using a heating wedge to carry out the step of heating the surface of the film strip facing the clothing and the surface of the clothing facing the film strip.

12. The method according to claim 1 , which further comprises carrying out the step of exerting the pressing force onto the film strip applied to the surface of one of the two side edges of the clothing by using a pressure roll and a further roll or a substantially flat plate as an opposing element to the pressure roll.

13. The method according to claim 1 , which further comprises carrying out the step of exerting the pressing force onto the film strip applied to the surface of one of the two side edges of the clothing by using two pressure plates tapering toward one another in a wedge shape and guiding the clothing together with the film strip through a tapering gap between the two pressure plates.

14. A clothing, comprising an edge protector produced according to claim 1 .

15. The clothing according to claim 14 , wherein the clothing is a dryer fabric.

Assignees

• Voith Patent Gmbh

Inventors

• Koeckritz Uwe
• Kallenberg Jens

Classifications

• D21F1/30 Primary

  Protecting wire-cloths from mechanical damage · CPC title

• D21F1/0027 Primary

  Screen-cloths · CPC title

• D21F7/12

  Drying · CPC title