Woven belt for a corrugated cardboard machine

Details Woven belt for a corrugated cardboard machine Woven belt for a corrugated cardboard machine

1997-03-03

1998-07-28

Stryjewski, William

Endless belt power transmission systems or components

Friction drive belt

Including fabric web

474268, 474270, F16G 100

Patent

active

057856214

DESCRIPTION:

BRIEF SUMMARY
BACKGROUND OF THE INVENTION

The invention relates to a woven belt for a corrugated cardboard machine comprising a central woven layer for absorbing tensile stress, wherein the central woven layer is comprised of first warp threads and first weft threads and wherein a weave pattern of the central woven layer is such that the first warp threads cross at least two of the first weft threads on one side of the central woven layer before crossing over to the other side of the central woven layer. A woven top layer is connected to the upper side of the central woven layer and a woven bottom layer is connected to the bottom side of the central woven layer. The woven top layer provides a support surface for the cardboard. The woven top layer is comprised of second warp threads and second weft threads, wherein a weave pattern of the woven top layer is such that the second warp threads cross at least two of the second weft threads on one side of the woven top layer before crossing over to the other side of the woven top layer. The woven bottom layer is comprised of third warp threads and third weft threads, wherein a weave pattern of the woven bottom layer is such that the third warp threads cross one of the third weft threads on the inner side of the woven bottom layer facing the central woven layer before crossing over to the outer side of the woven bottom layer and wherein the third warp threads cross at least three of the third weft threads on the outer side of the woven bottom layer before crossing over to the inner side of the woven bottom layer. The second warp threads are arranged in first thread groups and are staggered relative to one another within each one of the first thread groups. The third warp threads are arranged in second thread groups and are staggered relative to one another within each of the second thread groups. First binding threads for weaving together the woven top layer and the central woven layer are provided. Second binding threads for weaving together the woven bottom layer and the central woven layer are provided. The first, second, and third weft threads are tied off within the woven top layer, the central woven layer, and the woven bottom layer, respectively.
Such a belt is known from DE 41 27 164 A1. This belt exhibits quiet running properties and thus has a considerably reduced noise level at the location of use. It has a long service life whereby with increasing time of use the woven layer facing the paper side have shown surface changes which may negatively affect the quality of the cardboard surface. Thus, the currently used belt is frequently exchanged already when only slight changes of the surface quality appear even though, based on its construction, it is suitable for a longer time of use.
It is an object of the invention to embody a belt for a corrugated cardboard machine such that even for an extended period of use a uniform surface quality of the cardboard is ensured.


SUMMARY OF THE INVENTION

This object is solved by the woven belt in a longitudinal direction thereof having longitudinal edge portions and a longitudinal center portion between the edge portions and the second warp threads including at least one outer warp thread positioned within the edge portions and inner warp threads positioned within the center portion. The at least one outer warp thread extends in a longitudinal direction of the woven belt and consists of a material having at least one of a greater wear resistance and a greater temperature resistance than the inner warp threads.
The at least one outer warp thread is positioned directly adjacent to a longitudinal edge of the edge portions.
The woven belt may comprise a plurality of the outer warp threads arranged adjacent to a longitudinal edge of the edge portions.
The first binding threads, extending in the longitudinal direction of the woven belt, consist of the same material as the at least one outer warp thread.
Advantageously, all of the warp threads within the edge portions and all of the binding threads within the edge portion consist of th

REFERENCES:
patent: 2612190 (1952-09-01), Hall

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