Fabric tape

Patent metadata

Field	Value
Publication number	US-12467165-B2
Application number	US-202318219835-A
Country	US
Kind code	B2
Filing date	Jul 10, 2023
Priority date	Jul 12, 2022
Publication date	Nov 11, 2025
Grant date	Nov 11, 2025

Abstract

A forming fabric tape for a machine for producing or processing a fiber web, the forming fabric tape including an upper fabric layer including upper longitudinal threads and upper transversal threads woven with the upper longitudinal threads; and a lower fabric layer including lower longitudinal threads and lower transversal threads woven with the lower longitudinal threads, wherein the upper fabric layer and the lower fabric layer are arranged above one another so that the upper fabric layer is oriented towards the fiber material web and the lower fabric layer is oriented away from the fiber web, wherein the upper fabric layer is connected with the lower fabric layer by binding threads (B1-B2) running in a transversal direction of the fabric tape, wherein a weaving pattern of the forming fabric tape is repeated in pattern repeats, wherein the pattern repeats are formed from plural longitudinal thread supergroups.

First claim

What is claimed is:

1 . A forming fabric tape for a machine for producing or processing a fiber web, the forming fabric tape comprising:
an upper fabric layer including upper longitudinal threads and upper transversal threads woven with the upper longitudinal threads; and a lower fabric layer including lower longitudinal threads and lower transversal threads woven with the lower longitudinal threads, wherein the upper fabric layer and the lower fabric layer are arranged above one another so that the upper fabric layer is oriented towards the fiber material web and the lower fabric layer is oriented away from the fiber web, wherein the upper fabric layer is connected with the lower fabric layer by binding threads running in a transversal direction of the fabric tape, wherein a weaving pattern of the forming fabric tape is repeated in pattern repeats, wherein the pattern repeats are formed from plural longitudinal thread supergroups respectively including the upper longitudinal threads and the lower longitudinal threads, wherein each of the longitudinal thread super groups includes two first groups and a second group, wherein each first group is formed respectively from an upper longitudinal thread and a lower longitudinal thread arranged below the upper longitudinal thread and each second group is formed respectively from an upper longitudinal thread and two lower longitudinal threads arranged below the upper longitudinal thread, wherein each binding thread in the pattern repeat forms at least one multiple binding with the upper transversal threads in the pattern repeat, and wherein the pattern repeat includes at least six longitudinal thread super groups that include the upper longitudinal threads and the lower longitudinal threads.

2 . The forming fabric tape according to claim 1 , wherein the pattern repeat includes exactly six longitudinal threads super groups including the upper longitudinal threads and the lower longitudinal threads.

3 . The forming fabric tape according to claim 1 , wherein the upper fabric layer is connected with the lower fabric layer in the pattern repeat exclusively by multiple bindings of the binding threads with the upper longitudinal threads.

4 . The forming fabric tape according to claim 1 ,
wherein a first binding thread in the pattern repeat forms two double bindings with the upper longitudinal threads, and wherein a second binding thread forms a double binding and a triple binding with the upper longitudinal threads.

5 . The forming fabric tape according to claim 1 ,
wherein the binding threads are always arranged in binding thread pairs, and wherein the two binding threads of a respective binding thread pair are woven in an alternating pattern with the upper longitudinal threads and the lower longitudinal threads and intersect in intersection points when switching from being woven with the upper longitudinal threads to being woven with the lower longitudinal threads.

6 . The forming fabric tape according to claim 1 , wherein the binding threads form a plain weave of the upper fabric layer with the upper transversal threads and the upper longitudinal threads.

7 . The forming fabric tape according to claim 1 , wherein the lower fabric layer includes a 6-shaft repeat binding of the lower longitudinal threads or a 8-shaft repeat binding of the lower longitudinal threads or a 12-shaft repeat binding of the lower longitudinal threads.

8 . The forming fabric tape according to claim 7 , wherein a lower transversal thread only switches over one or at the most two directly adjacent lower longitudinal threads and otherwise floats below the remaining lower longitudinal threads per shaft repeat of the lower longitudinal threads.

9 . The forming fabric tape according to claim 1 ,
wherein the upper longitudinal threads and the lower longitudinal threads in each group are not offset relative to each other in an orthogonal view of the fabric layers or only slightly offset relative to each other in the orthogonal view of the fabric layers so that a clear space of half a diameter of an upper longitudinal thread is formed at the most between the upper longitudinal threads and the lower longitudinal threads of each group or there is no free space.

10 . The forming fabric tape according to claim 1 , wherein a diameter of the lower longitudinal threads is greater than a diameter of the upper longitudinal threads.

11 . The forming fabric tape according to claim 1 , further comprising: more upper transversal threads than lower transversal threads.

12 . The forming fabric tape according to claim 11 , further comprising: 1.5 times an amount of upper transversal threads compared to an amount of lower transversal threads.

Assignees

• Voith Patent Gmbh

Inventors

• Boeck Johann
• Gallik Jan

Classifications

• D03D13/004

  with weave pattern being non-standard or providing special effects · CPC title

• D03D3/005

  Tapes or ribbons not otherwise provided for (D03D1/0005, D03D1/0011, D03D1/06, D03D1/08, D03D1/0094 take precedence) · CPC title

• D21F1/0045

  Triple layer fabrics · CPC title

• D21F7/083

  Multi-layer felts · CPC title

• D21F1/0036 Primary

  Multi-layer screen-cloths · CPC title