Patent Application
20080064281
The above-mentioned and other features and advantages of this invention, and the manner of attaining them, will become more apparent and the invention will be better understood by reference to the following description of embodiments of the invention taken in conjunction with the accompanying drawings, wherein:
Corresponding reference characters indicate corresponding parts throughout the several views. The exemplifications set out herein illustrate one embodiment of the invention, and such exemplifications are not to be construed as limiting the scope of the invention in any manner.
Referring now to the drawings, and more particularly to
In order to be able to provide the band 10 in an endless configuration, the band body 12 is woven during the weaving operation in such a way that, in both its end regions 20, 22, the longitudinal filaments 16, which is to say for example warp filaments, are provided with end regions 24 and 26 which project, which is to say they are not woven with transverse filaments 18, for example weft filaments. It is to be assumed here, for example, that the two end regions 24 and 26 that can be seen at the ends 20, 22 of the band body 12 are respective end regions of the same longitudinal filaments 16, which of course does not necessarily have to be the case. These end regions 24, 26 of the or all longitudinal filaments 16 are then woven with transverse connecting filaments VQ in order to produce a connecting zone V. In the example illustrated, the connecting zone V includes the transverse connecting filaments 1, 2, 3, 4 and 5. In the connecting zone V, therefore, by way of the end regions 24 and 26 of the longitudinal filaments 16 and the transverse connecting filaments VQ, a woven structure is obtained which can correspond to the woven structure which is present in the remaining band body 12, so that there are uniform surface properties over the entire length of the band 10 now provided in an endless configuration.
It can be seen in
In order to counter this problem, in the band 10 according to the invention, cross-sectional widenings are formed in the region of these filament ends 28 and 30 in a manner described below. In this case, firstly after the production of the connecting zone V, by way of the use of cutting tools 32 which can be seen at the filament ends 28 in
As already explained above, it is of course possible to restrict a treatment of this type to those regions of the connecting zone V in which the risk of the band ends slipping out is particularly great, which is to say for example the edge regions. In the region located in between, which also comes into contact with the web material to be produced, it is for example possible to dispense with this treatment. There, for example, the band ends 28 and 30 can be shortened still further, since no material has to be maintained in order to produce cross-sectional widenings. Furthermore, it should be pointed out that, during the thermal treatment described above, the cross-sectional widening does not necessarily have to be produced by pressing a hot tool onto a respective band end. Even slight contact and corresponding heating of such a filament end can result in the latter retreating, forming a ball-like cross-sectional widening, so that this ball-like cross-sectional widening is located substantially completely within the thickness of the single fabric layer 14.
In an alternative type of configuration, it is also possible for cross-sectional widenings of this type not to be produced by thermal treatment but by knotting them, that is to say the formation of knots at the filament ends. In this case, too, the cross-sectional widenings therefore form an integral constituent part of the longitudinal filaments 16 themselves, since they are also provided from the constructional material of the latter, albeit by mechanical handling.
In a further alternative type of configuration it is possible to fit small clamp-like or staple-like elements at the filament ends, which are clamped firmly to the filament ends 28 and 30 and thus, in the region of these filament ends, are able to ensure a cross-sectional widening and to prevent the filament ends slipping out of the fabric interspaces. It is obvious that various types of cross-sectional widenings can also be produced over the width of such a band 10. Furthermore, it should be pointed out that cross-sectional widenings of this type can of course also be provided when such a band is constructed with more than one fabric layer, which is to say for example a fabric layer on the side of the web material and a fabric layer on the side of the machine are provided, which are joined to each other by separate binding filaments or possibly also structure-forming binding filaments.
While this invention has been described with respect to at least one embodiment, the present invention can be further modified within the spirit and scope of this disclosure. This application is therefore intended to cover any variations, uses, or adaptations of the invention using its general principles. Further, this application is intended to cover such departures from the present disclosure as come within known or customary practice in the art to which this invention pertains and which fall within the limits of the appended claims.
| Number | Date | Country | Kind |
|---|---|---|---|
| 10 2006 042 812.9 | Sep 2006 | DE | national |
