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EP1991735B1 - Bande de tissu pour machine de fabrication de materiau en bande, en particulier de papier ou de carton - Google Patents

Bande de tissu pour machine de fabrication de materiau en bande, en particulier de papier ou de carton Download PDF

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Publication number
EP1991735B1
EP1991735B1 EP07703981.6A EP07703981A EP1991735B1 EP 1991735 B1 EP1991735 B1 EP 1991735B1 EP 07703981 A EP07703981 A EP 07703981A EP 1991735 B1 EP1991735 B1 EP 1991735B1
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EP
European Patent Office
Prior art keywords
threads
fabric layer
woven fabric
thread
binding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP07703981.6A
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German (de)
English (en)
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EP1991735A1 (fr
Inventor
Petra Hack-Ueberall
Johann Boeck
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Voith Patent GmbH
Original Assignee
Voith Patent GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE200610008812 external-priority patent/DE102006008812A1/de
Priority claimed from DE102006028630A external-priority patent/DE102006028630A1/de
Application filed by Voith Patent GmbH filed Critical Voith Patent GmbH
Publication of EP1991735A1 publication Critical patent/EP1991735A1/fr
Application granted granted Critical
Publication of EP1991735B1 publication Critical patent/EP1991735B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/0027—Screen-cloths
    • D21F1/0036—Multi-layer screen-cloths
    • D21F1/0045—Triple layer fabrics
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
    • Y10T428/2481—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] including layer of mechanically interengaged strands, strand-portions or strand-like strips

Definitions

  • the present invention relates to a fabric tape for a machine for producing web material, in particular paper or cardboard.
  • a forming fabric fabric tape known that is made with two layers of fabric.
  • a web material-side first fabric layer carries the material to be produced and is woven with a plain weave to minimize the risk of marking the web material to be produced by a smooth surface as possible the web material side first fabric layer.
  • a running side or machine side second fabric layer gives the fabric tape the required stability and is guided in operation on the various leading or driving the fabric tape rollers or roller elements.
  • the two fabric layers are connected by a variety of binding threads.
  • From the EP 1 619 296 is a paper machine clothing known in which the paper and / or machine-side fabric layer can be formed from a plain weave such as canvas, twill or satin weave or a derivative and / or extension of these basic bindings.
  • the EP 0 342 684 moreover discloses various machine-side weaving patterns for a double-layered fabric of a paper machine.
  • a fabric tape for a machine for producing web material in particular paper or cardboard, comprising a web material side first fabric layer and a machine side second fabric layer, wherein the first fabric layer and the second fabric layer are connected by binding threads and the second fabric layer with woven in an 8-thread irregular satin weave.
  • an irregular satin weave for the second fabric layer brings various advantages. While a regular satin weave leads to very pronounced, dominant binding diagonals, ie diagonals defined by the binding points of the warp and weft threads, which entail the danger that they will be visible through the first material layer on the web material side, an irregular satin weave is taken care of. that such dominant bond diagonals can not arise. However, of course, the irregular satin weave also takes into account the basic rules for the formation of an atlas weave, such as that no tie point is immediately adjacent to another tie point. Another advantage of using an atlas binding is that it has a very large ratio of floats to binding points.
  • the fabric tape according to the invention can be configured such that the first fabric layer and the second fabric layer are constructed with longitudinal threads extending in a tape longitudinal direction and transverse threads extending in a tape transverse direction, and the floats of the transverse threads of the second fabric layer at the first fabric layer side facing away from the longitudinal threads of the second fabric layer.
  • This structure leads to the fact that primarily the transverse threads form the running side or machine-side surface and, accordingly, thread material can also be selected for this, which is very wear-resistant.
  • the longitudinal threads of the second fabric layer may then be selected substantially unaffected by any wear requirements to impart a particular tensile strength to the fabric tape.
  • the longitudinal threads are warp threads and that the transverse threads are weft threads.
  • a configuration which is advantageous with regard to the avoidance of a marking in the web material to be produced can provide that in a weave repeat of the second fabric layer the binding points formed between longitudinal threads and transverse threads are distributed such that at least two groups with three binding points exist which have a pitch number 2 or one Progression number 2 corresponding distance. It is thus achieved that in relatively small areas a relatively large number of binding points is present, so that approximately conditions are produced, as they are present in a 5-binding atlas. Very close bond points are also advantageous for reducing marking tendency. In other areas, there are then fewer bonding points, so that a substantially smooth surface is provided there.
  • the bond points formed between longitudinal yarns and transverse yarns are distributed such that at least one group with 5 bond points exists that have a mutual distance corresponding to a number of times 2 or an increment number 2.
  • the embodiment can continue to be such that in the binding repeat at least one group with three binding points exists, which have a pitch number 2 or a progression number 2 corresponding mutual distance.
  • binding points formed between longitudinal threads and transverse threads can be distributed in a weave repeat of the second fabric layer in such a way that at least one group with four binding points exists which have a mutual distance corresponding to a pitch number 2 or an increment number.
  • binding threads form pairs of binder threads, each pair of binding threads being longitudinally or transversely between two threads the first fabric layer and two threads of the second fabric layer runs.
  • the procedure is advantageously such that in each case one binder thread of a pair of binder threads binds with threads of the first fabric layer, while the other binder thread binds this pair of binder threads with at least one thread of the second fabric layer, and that change in a crossing point, the two binding threads of the binder thread pair, so that the other Binding thread binds with threads of the first fabric layer, while a binder thread binds with at least one thread of the second fabric layer.
  • crossing points of adjacent pairs of binding thread can form a regular crossing point pattern. It is also proposed that in the case of two binder thread pairs running directly next to one another no binding thread binds to the same thread of the second fabric layer.
  • no binding thread binds to a thread of the second fabric layer, with which a thread extending directly next to this binding thread binds to the second fabric layer.
  • a binder thread binds with a thread of the second fabric layer, which is strongly curved due to its immediately adjacent bond with another thread of the second fabric layer, so that due to the existing curvature there a binding thread binding there laterally could be moved.
  • the fabric tape of the invention may be further constructed so that the longitudinal threads of the second fabric layer extending in a band longitudinal direction and / or the transverse threads of the second fabric layer running in a transverse direction of the band are arranged substantially equidistant from each other.
  • the longitudinal threads of the second fabric layer running in one longitudinal direction of the tape and / or the transverse threads of the second fabric layer extending in a transverse direction can be paired, the thread spacing in a respective pair being smaller than the spacing between a pair and a pair Pair of adjacent thread.
  • this grouping can be used to yarn pairs in a particularly advantageous manner, if between the first fabric layer and the second fabric layer a shot ratio or / and a chain ratio of 2: 3. This means that in each case two threads, for example warp threads, of the first fabric layer are assigned to three threads of the second fabric layer.
  • the relative position of the respective threads of the first fabric layer and the second fabric layer is selected so that the two fabric layers can be very close to each other, resulting in a very thin fabric tape.
  • the grouping into thread pairs can advantageously be used if there is a weft ratio or / and a warp ratio of 3: 3 between the first fabric layer and the second fabric layer.
  • a binding thread which produces the connection between the first fabric layer and the second fabric layer is integrated into the second fabric layer.
  • the present invention relates to a method for producing a fabric tape for a machine for producing web material, in particular paper or cardboard, in which method the fabric tape is woven with a web material side first fabric layer and a machine side second fabric layer, wherein the first fabric layer and the second fabric layer be bound by binding threads and wherein the second fabric layer is woven with an irregular 8-binding satin weave.
  • the Fig. 1 to 3 represent a first embodiment of a fabric tape 101 of the invention, which can be used in particular as a forming fabric in machines for the production of paper or board material.
  • This fabric tape 101 is constructed with two layers of fabric, namely one in Fig. 2 recognizable upper, web material side first fabric layer 100 and a lower, machine side or second side second fabric layer 102.
  • the first fabric layer 100 provides the surface, with which the producing sheet material comes into contact.
  • the second fabric layer 102 provides the back of the fabric belt 101, with which this is guided over different guide or drive rollers.
  • FIG. 12 illustrates a weave pattern of the second fabric layer 102 over a plurality of weave patterns, each extending over eight longitudinal threads extending in the machine direction MD, ie, generally the longitudinal direction of the fabric tape 101, and eight transverse directions CMD extending transverse threads extends.
  • the yarns running in the machine direction MD are the warp yarns in the manufacturing process
  • the yarns extending in the transverse direction CMD are weft yarns.
  • Assigned to each such bond repeat is the Fig. 2 the eight weft thread groups 1 to 8 of a binding repeat and their interaction with the warp threads 1 to 16 of the same repeat.
  • the odd-numbered warp threads 1, 3, 5, 7, 9, 11, 13, 15 run in the first fabric layer 100, while the even numbered warp threads 2, 4, 6, 8, 10, 12, 14, 16 extend in the second fabric layer 102.
  • first fabric layer 100 and the second fabric layer 102 each comprise a weft thread 104 or 106 and a pair of binding threads 108, 110. These binding threads 108, 110 provide a firm connection between the two fabric layers 100, 102 ago.
  • each box of a binding repeat represents a crossing point of one of the warp threads 2 to 16 with the associated weft thread 106. If an "X" is entered in one of the boxes, then at this crossing point a binding point is created, in which a weft thread over the respective associated warp thread sets. In those boxes in which no "X" is entered, the weft threads 106 run in each case under the warp threads 2 to 16 of the second fabric layer 102, ie run on the side facing away from the first fabric layer 100 side. Each "X" thus represents a so-called warp reduction in the second fabric layer 102.
  • the Fig. 3 shows, similar to the Fig. 1 , Bindungsrapporte the second fabric layer 102, wherein not only by marking respective boxes, the binding points of the weft threads 106 are shown with the warp threads 2 to 16 of the second fabric layer 102, but also illustrates the binding points of the binding threads 108 and 110 in the second fabric layer 102 are.
  • Each black-colored box represents a binding point of a weft thread 106 with a respective one of the warp threads, that is, a warp reduction.
  • a binding point of a respective binding thread 108 or 110 with a warp thread 2 to 16 of the second fabric layer 102 is formed in each case by binding the binding thread 108 or 110 on the outside of the warp yarn 2 to 16 involved, ie with respect to the respective binding thread 108 or 110 is a warp.
  • the binding pattern chosen for the second fabric layer 102 is an irregular 8-bonded satin weave, ie a weave in which a weave repeat extends over eight weft threads and the same number of warp threads of the considered fabric layer. So you can see for example in the in Fig. 1 left binding above, which extends over the thread groups 1 to 8 and the warp threads 2 to 16, that, as required for an atlas binding, formed in any of the consecutive thread groups in the warp thread bond points adjacent to binding points of the immediately adjacent thread group. In the direction of cooking or in the weft direction, at least one thread group or at least one warp thread is located between each two crossing points. Like the eight in Fig.
  • weft threads 106 extend where they do not bind with warp threads, ie where there are no chain lowering, on the outside of the fabric belt 101, ie on the side of the second fabric layer away from the first fabric layer 100 102. There they form floats each time over 7 warp threads of the second fabric layer 102, with the result that almost the entire run-side surface is provided by the weft threads 106 is. Only where weft threads 106 bind with respective warp threads 2 to 16, ie where there are chain sinks, is a section of the involved warp thread represented by a respective binding point on the run-side surface.
  • the warp threads 2 to 16 of the second fabric layer 102 which are essentially not exposed to the wear and tear contact with rolls or the like, can be selected from a material which has a particular tensile strength, such that the fabric tape 100 according to the invention is produced by these warp threads 2 to 16 of the second fabric layer 102 in the band longitudinal direction MD has a particularly high tensile strength.
  • the warp threads 1 to 15 of the first fabric layer 100, as well as the weft threads 104 of the first fabric layer, can be selected from materials which are particularly suitable for contact with the web material to be produced or the starting material therefor.
  • each pair of binding threads 108, 110 is interwoven such that, such as in Fig.
  • the other binder thread 110 has a point of attachment to the warp threads 2 to 16 of the second fabric layers 102.
  • the binding thread 110 forms a plain weave together with the warp threads 1 to 15 of the first fabric layer 100, while the warp thread 108 forms a binding point with one of the warp threads 2 to 16 the second fabric layer 102 forms.
  • the two binding threads 108, 110 of a respective pair of binder threads in the first fabric layer 100 together form a weave pattern, which corresponds to that of a single weft thread of a plain weave. This results in a very finely structured, a plurality of support points providing surface of the first fabric layer 100 with a correspondingly low marking tendency.
  • the atlas binding selected according to the invention is irregular. It arises in Fig. 1 also recognizable areas in which the binding points "X" of the weft threads 106 with the warp threads 2 to 16 are closer to each other, while other areas arise in which greater distances are present between the individual binding points "X". Where the bonding points are closer to each other, almost a bonding point density equal to that of a plain weave is obtained, which also makes a very flat surface overall. In those areas in which larger distances are present between the binding points, that is correspondingly longer floats of the weft threads 106 and the warp threads 2 to 16 are present, a very smooth, almost unstructured surface is present.
  • Fig. 1 It is also illustrated if, within a binding repeat extending over eight weft threads and eight binding threads of the second fabric layer 102, ie the smallest binding pattern unit in the warp direction and in the weft direction, there are two groups of binding points in which the individual binding points are at a distance from one another which corresponds to a slope number of 2 or corresponds to a progression number of 2. This is in Fig. 1 recognizable by the arrows.
  • An inclination number of 2 here means that there is a weft thread group between two considered binding points.
  • a progression number 2 means that between the two considered Binding points a warp thread lies. It should be noted here that in Fig. 1 For example, the weave repeat observed for this purpose starts at the second weft thread group 8, viewed from above, and ends at the first weft thread group viewed from above, marked 7.
  • any group of crossing points extending over eight arbitrary weft threads 106 and warp threads of the second fabric layer 108 can be represented as a binding repeat.
  • the binding line 110 marked with a dot line binds over the warp threads 3 and 7 of the first fabric layer 100. In association with it, it binds with a continuous thread Line, shown binder line 108 with respect to these binding points symmetrically below the warp 6 of the second fabric layer 102.
  • this binder thread 108 then over the warp threads 11 and 15 of the first fabric layer 100 sets, binds the binder thread 110 symmetrically thereto under the warp thread 14 of the second fabric layer 102nd
  • This requirement is broken only where, as illustrated, for example, by the two weft thread groups 1 and 2, a binding thread in the second fabric layer 102 would have a binding point immediately adjacent to a point of bonding of a weft thread 106 in the second fabric layer 102 with the same warp thread is adjacent.
  • the binder thread 110 of the first thread group 1 would have to set below the warp thread 6 of the second fabric layer 102, not under the warp thread 8.
  • binding patterns 108, 110 ensures that no in the warp direction immediately adjacent binding points of respective binding threads are present with the same warp thread. There is always an offset around at least one warp thread. This is clear also in the Fig. 3 recognizable, where not two successive in the warp direction binding points of the binding threads of different, immediately successive pairs of binder thread are superimposed.
  • binding threads 108, 110 also engage Form binding pattern with a binding repeat, which extends over eight warp threads, so that both for the between the weft threads 106 and the warp threads 2 to 16 of the second fabric layer 102, as well as for the binding threads 108, 110 of the same binding repeat is present.
  • an overall weave repeat can also be obtained for the entire fabric tape 100, which extends over eight warp threads and over eight weft threads or weft thread groups.
  • FIGS. 4 to 6 an embodiment is shown, in which for the second fabric layer 102, so the weave pattern of the weft threads 106 with the warp threads 2 to 16 of this second fabric layer 102, also an irregular eight-binding satin weave is provided.
  • the bonding points are slightly different than in the embodiment described above. This leads, for example, that, like the Fig. 4 can be taken, here, for example, a group of five binding points "X" is present within a binding repeat, in which the binding points in each case with the pitch number 2 and the progression number 2 are spaced apart. If the binding repeat is different, there are two groups of three binding points each, where the slope number or the progression number 2 is present.
  • a third embodiment is in the Fig. 7 to 9 shown.
  • the weft threads 106 with the warp threads 2 to 16 of the second fabric layer 102 tie in the pattern of an irregular 8-binding atlas. Since the location of the binding points "X" in Fig. 7 However, with respect to the embodiments described above, again somewhat differently chosen, local areas arise in which, as indicated by arrows in Fig. 7 indicated, four binding points "X" lie with respect to each other so that they have a pitch number 2 and progression number 2 corresponding mutual distance. These groups, each with four adjacent bond points, form stabilization zones with reinforced warp-weft anchorage.
  • the irregularity with the avoidance of dominant diagonals introduced by the irregular satin weave is superimposed here on a regularity in the arrangement of these groups of four binding points with a small mutual distance, which again turned out to be particularly advantageous with regard to the reduction of the marking tendency.
  • the dominant diagonals of the regular atlas binding can not arise, since the "diagonals" defined by two binding points do not continue with the next but four group of binding points.
  • FIG. 10 Another alternative embodiment is in the 10 to 12 shown. Again, the binding pattern of the Fig. 10 Again, the irregular 8-bind Atlasitati, within a binding repeat of the second fabric layer 102 again two groups of binding points "X" are present, which have a mutual distance with a slope number or a progression number 2. Although the bond points of a given group lie on a straight connecting line, these lines do not find continuation in the immediately adjacent binding repeats, so that here too no dominant diagonals exist.
  • the binding points of a binding thread and a weft thread 106 with the same warp thread of the second fabric layers 102 there is at least one weft thread which does not bind with this warp thread, ie floats under it.
  • This minimum distance is defined by two such non-binding, but floating weft threads 106.
  • the binding pattern of the binding threads 108, 110 of the embodiment of the 10 to 12 essentially the requirements described above. That is, the crossing points of the two binding threads 107, 110 alternate alternately. Also lie in the Fig. 12 recognizable binding points "O" and "X" approximately on diagonal, so are also relatively regularly arranged and superimposed by the irregular satin weave.
  • both binding points of the binding threads 108 and 110 of a thread group in the second fabric layer 102 are not symmetrical in each case to the binding points of the other binding thread in the first fabric layer 100.
  • One of the binding points in the second fabric layer is in each case laterally shifted a warp thread starting from a symmetrical arrangement with respect to the binding points in the upper, first fabric layer 100.
  • the distance of a point of bonding in the bottom fabric layer 102 to a point of bonding a weft 106 having the same warp of the warp yarns 2 to 16 include at least two such weft yarns 106.
  • each binding point of a weft thread 106 with a warp thread and a binding point of the same warp thread with a binding thread are at least two weft threads 106 which float under this warp thread away.
  • binding threads 108, 110 here satisfy the law that when in a binding thread pair one of the binding points in the second fabric layer 102 is laterally displaced from the symmetrical positioning, for example to the left (eg thread group 1 in FIG Fig. 13 ) and in the next thread group or the binding thread pair 108, 110 the non-symmetrically arranged binding point of a binding thread in the second fabric layer 102 is shifted to the other side, ie to the right (thread group 2 in FIG Fig. 13 ), these two considered binding threads, eg the binding thread 110 of the first thread group in Fig. 13 and the binding thread 108 of the second thread group in Fig.
  • a binding point "O" or "X” with a weft thread, namely the weft thread 106 is located between these two binding points.
  • the immediately following group comprising two pairs of Binding pairs 108, 110, in the example under consideration thus comprising the two thread groups 3 and 4
  • a total irregularity in the arrangement of the crossing points of the binding threads and a regularity in the arrangement of the binding points of the binding threads or also of the symmetrical structure lateral deviation of the binding points of the binding threads is superimposed on the irregular satin weave.
  • These regularities at the points of intersection and the binding points can each be expressed in that they lie on diagonals or have an alternating offset in both directions.
  • the Fig. 15 and 16 show, similar to the Fig. 13 and 14 , Another alternative embodiment, with respect to the weave pattern of the second fabric layer 102 of the in the Fig. 7 to 9 correspond to the embodiment shown.
  • a difference resides in the way in which the binding threads 108, 110 are woven into the fabric band 101.
  • care is taken in the manner of incorporating these binding threads 108 and 110 that the irregular 8-binding satin weave is superimposed on a regular binding structure in the binding threads 108, 110.
  • These mutually identical pairs of binding threads 108, 110 are each by a weft thread 104 in the first fabric layer 100 and a weft thread 106 in the second fabric layer 102 separated from each other. It can be seen further that in the weft thread groups 1 and 2, 5 and 6, the crossing points of the binding threads 108, 110 each lie between the warp threads 9 and 10, while in the weft thread groups 3 and 4, 7 and 8, these crossing points between the warp threads 5 and 6 lie.
  • binding points in the second fabric layer 102 are again laid in such a way that one of them is laterally displaced out of the symmetrical positioning with respect to the overlying binding points of the other binding thread in the first fabric layer 100.
  • an offset to the same side, here to the left exists.
  • Fig. 16 one recognizes clearly further an aspect which is or is also provided in the other embodiment variants according to the invention.
  • the first thread group comprising the weft thread 1 and the two binding threads 1, 2 in FIG Fig. 16
  • the binding thread 108 follows the weft thread 106 of the second fabric layer 102 present in this thread group 1 and forms the binding point "X" with the warp thread 14.
  • the binding thread 110 follows in the warp direction of the binding thread 110 and forms with the warp thread 4 the binding point "O”.
  • the thread group 2 with the binding threads 3, 4 first follows the twine 110 and forms the binding point "O".
  • tissue band 101 is in the 17 to 19 shown.
  • the weave pattern of the second fabric layer 102 corresponds to that in FIG Fig. 7 shown.
  • an elementary difference is primarily that, in the weft thread groups 1 to 8, the binding thread 110 and then the binding thread 108 in the lower fabric layer 102 alternately binds with two immediately adjacent warp threads of the lower fabric layer 102. In this way, the overall binding structure is further consolidated.
  • the location of these double bond points "OO" and "XX" is chosen such that there is regularity in the arrangement, in that diagonal lines are formed on which these double bond points lie.
  • the individual binding points of the binding threads 108, 110 in the second fabric layer are selected so that they lie on diagonals. As a result, even for the sections of these binding threads 108, 110 forming a plain weave in the first fabric layer, a very regular distribution results, which in Fig. 19 is shown.
  • the weft thread groups 1 to 8 each show the twine portions of the binding threads 108, 110, as they are on the upper side of the first fabric layer 100.
  • FIGS. 20 to 22 show a variant; the approximation of the foregoing with respect to the 17 to 19 corresponds to described embodiment.
  • the binding threads 108, 110 alternately bind with two warp threads of the second fabric layer.
  • the in Fig. 20 recognizable bond alternate the crossing points of adjacent weft thread groups back and forth, so once lie between the warp threads 9 and 10 and once between the warp threads 5 and 6.
  • This combined with the double binding points of each binding thread 108 or 110 leads to the in Fig. 22 illustrated pattern in which in each weft thread groups in each case the same binding threads to each other with their in the first fabric layer 100 forming a plain weave sections have a progressive offset in the weft direction.
  • the weft thread 104 of the first weft thread group 1 the "weft thread” formed by the two plain weave forming portions of the binding threads 108, 110, the weft thread 104 of the second weft thread group and the "weft ", formed by the plain weave forming sections of the binding threads 108, 110 of the second weft thread group 2.
  • there are a total of four "weft threads” in the first fabric layer 100 while in the second fabric layer 102, only the two weft threads 106 of the two weft thread groups 1 and 2 are present. This corresponds to a ratio of 4: 2, ie 2: 1, which is considered to be particularly advantageous due to the comparatively high proportion of weft threads in the first fabric layer, that is, the support points for the fabric layer to be produced web material.
  • FIGS. 23 to 25 show an embodiment in which a weft thread ratio of 3: 2 is present. Again, this is again based on the in Fig. 23 There, the weft thread 104 of the first weft thread group 1, the plain weave forming portions of the binding threads 108 and 110 of the first weft thread group 1, which together again result in a "weft", and the weft thread 104 of the second weft thread group 2. These two weft threads of the first fabric layer 100 are the two weft threads 106 of the first weft thread group 1 and the second weft thread group 2, so that the ratio 3: 2 results. Even with such a shot ratio, the principle of the present invention can be applied.
  • the weft threads 106 and the warp threads 2 to 16 of the second fabric layer 102 are basically interwoven again as in the example of Fig. 7 recognizable, thus forming an irregular 8-bind Atlasitati with the resulting benefits.
  • the plain weave forming portions of the binding threads 108, 110 are all again arranged so that diagonal stripes arise, in each of which such sections are present in the first fabric layer, so that by interruptions in Fig. 25 Recognizable crossing points, as was the case with the embodiments described above, correspondingly form a diagonal pattern.
  • a fabric tape which can be used as a forming fabric in papermaking machines will be described below with reference to FIGS FIGS. 26 to 33 explained. It shows the Fig. 26 a binding repeat of the machine-side or second-side second fabric layer, which, as is the case with all of the above-described fabric tapes, extends over the same number of warp threads and weft threads. Also in the presentation of Fig. 26 The rows of boxes each correspond to weft threads, while the columns of boxes represent warp threads.
  • the warp threads shown float here on the side facing the first fabric layer so that the warp threads float on the rear side, that is to say the running-side surface of the fabric tape.
  • the choice as to whether a warp atlas or a weft atlas is to be used can in particular also be made depending on which of the threads warp threads or weft threads are to run in the machine direction and which in the cross machine direction.
  • the uniform spacing of both the warp threads and the weft threads, as shown, superimposes a regular distribution of the threads contributing to the irregularity of the six-ply satin weave.
  • this warp ratio can then be further provided that the warp threads of the first fabric layers 100 each extend where between two immediately adjacent ones Warp threads of the second fabric layer 102 a greater distance is present. That is, the warp threads of the first fabric layer 100 do not extend over or between the respective pair forming warp threads of the second fabric layer 102, but extend over the space between a thread of a thread pair, for example, the respective thread 3 of the thread pair 2-3, and a thread This ensures that the warp threads of the first fabric layer 100 can move closer to the warp threads of the second fabric layer 102, possibly even something can dive into the interspaces with a greater distance, so that at the same thread density, a fabric tape 101 can be obtained with a smaller thickness.
  • the effect of the pairing can be further used to a very space-saving positioning of the binding between the first fabric layer 100 and the second fabric layer 102 producing binding threads.
  • This is based on the Fig. 33 explained. It is assumed in the following that also the Fig. 33 shows a warp cut, ie warp threads in section and cut in the weft direction represents. At this in Fig. 33 illustrated embodiment, the connection between the two fabric layers 100 and 102 is still not realized by weft threads; as in the embodiments explained above, but by warp threads, wherein in each case warp threads 200 and 202 form a warp thread pair that realizes the binding together.
  • one of these warp threads 200, 202 with the weft threads of the first fabric layer 100 forms a plain weave, for example, while the other of this warp thread pair 200 or 202 is integrated into the second fabric layer 102 and in this way makes the connection. After a change of these two warp threads then this other thread forms the plain weave in the first fabric layer 100.
  • this other thread forms the plain weave in the first fabric layer 100.
  • each two such pairs 200, 202 are adjacent to each other and therebetween in each case a single and exclusively in the first fabric layer 100 integrated warp thread 204 runs. Since, as explained above, the warp threads 200, 202 of the first fabric layer 100 to be considered in pairs alternately and also as binding threads are to be interpreted as a single thread with regard to the integration into the first fabric layer 100 this in Fig. 33 shown binding on three warp threads of the second fabric layer 102 now three warp threads of the first fabric layer 100. So here is a Kettiety of 3: 3 before.
  • the pairing in the second fabric layer 102 is used in this binding that each where between two warp threads of the second fabric layer 102, a larger gap is created, so for example between the warp threads 3 and 4 or 4 and 5, that warp of a respective Kettfadenzips 200, 202 of the first fabric layer 100 is incorporated into the second fabric layer 102, which is currently not integrated into the first fabric layer 100. Since, in general, the threads, in particular the warp threads, of the first fabric layer 100 have a slightly smaller thickness than the threads of the second fabric layer 102, it is thus practically impossible to provide additional space, the connection between the two fabric layers can be realized.
  • connection between the two fabric layers 100 and 102 as described above can also take place by weft threads, in which case in particular the in Fig. 30 shown weft thread grouping in the second fabric layer can be used in the same manner.
  • the representation would be the Fig. 33 to interpret as a shot cut.
  • the influence on whether, as in the FIGS. 28 and 29 shown, the weft threads or / and the warp threads should be arranged with uniform spacing from each other, or, if, as in the FIGS. 30 and 31 shown, a pairwise grouping should be obtained, can be made in various ways.
  • the influence of the type of weaving that is, the predetermining of the ratio of the thread tension present in the weft threads during the weaving operation to the tension present at the warp threads, can take place.
  • the procedure is such that the tension of the warp threads is varied at basically fixed tension of the weft threads, so that in one medium voltage range in the FIGS.
  • connection between the two fabric layers can be a structural connection, in which warp threads or weft threads which produce this connection are also used to contribute to the bond present on the paper side or in the paper-side fabric layer .
  • separate Bindekett- or binding weft threads are used, which have only the task of producing the connection between the two fabric layers, but otherwise not be used for the realization of a certain basic-bond pattern in the paper-side fabric layer or the running side fabric layer.
  • the various previously shown Embodiments of the invention can be used in so-called high-shaft weaving machines, ie machines which have a very large number of shanks, for example up to 60 shafts.
  • an elementary advantage of the embodiment according to the invention lies in the fact that irregular atlas binding is used, in which case the occurrence of dominant binding diagonals is avoided. Nevertheless, the invention utilizes the advantageous effect of comparatively long floats in the run-side, second fabric layer, wherein excessively long floats can be avoided, in particular when using an 8-bind satin weave.
  • the irregularity in the weave pattern of the running side, second fabric layer with certain regularities in the involvement of the binding threads particularly advantageous effects are achieved. These regularities may relate once to the position of the crossing points of the binding threads, but may also relate to the position of the binding points thereof in the second layer of fabric. In this case, the regularity can be generated by an offset of the crossing points or binding points proceeding in a same direction, or else by an alternating shifting back and forth of these crossing points or binding points.
  • the threads running in the transverse direction CMD were each represented as the weft threads and the threads running in the longitudinal direction MD were shown as the warp threads. Since in general such fabric tapes are longer than they are wide, this is a particularly advantageous variant, since in this way the number of warp threads to be provided can be kept smaller.
  • the principles of the invention may also find application in fabric tapes in which the threads running in the longitudinal direction MD are the weft threads and those in the transverse direction CMD extending threads are the warp threads.

Landscapes

  • Woven Fabrics (AREA)
  • Paper (AREA)

Claims (14)

  1. Bande de tissu pour une machine destinée à la fabrication de matériau en bande, en particulier de papier ou de carton, comprenant une première couche de tissu (100) du côté du matériau en bande et une deuxième couche de tissu (102) du côté de la machine, dans laquelle la première couche de tissu (100) et la deuxième couche de tissu (102) sont reliées l'une à l'autre par des fils de liage (108, 110) et la deuxième couche de tissu (102) est tissée avec une armure satin, caractérisée en ce que l'armure satin est une armure satin irrégulière de 8.
  2. Bande de tissu selon la revendication 1, caractérisée en ce que la première couche de tissu (100) et la deuxième couche de tissu (102) sont construites avec des fils longitudinaux s'étendant dans une direction longitudinale de la bande (MD) et des fils transversaux s'étendant dans une direction transversale de la bande (CMD) et en ce que les flottages des fils transversaux de la deuxième couche de tissu (102) s'étendent sur le côté des fils longitudinaux de la deuxième couche de tissu (102) qui est situé à l'opposé de la première couche de tissu (100).
  3. Bande de tissu selon la revendication 2, caractérisée en ce que les fils longitudinaux sont des fils de chaîne et en ce que les fils transversaux sont des fils de trame.
  4. Bande de tissu selon l'une quelconque des revendications 1 à 3, caractérisée en ce que, dans un rapport d'armure de la deuxième couche de tissu (102), les points de liage formés entre des fils longitudinaux et des fils transversaux sont répartis de telle manière qu'il existe au moins deux groupes avec trois points de liage, qui présentent une distance correspondant à un nombre de pas de 2 ou à un nombre d'avancées de 2.
  5. Bande de tissu selon l'une quelconque des revendications 1 à 4, caractérisée en ce que, dans un rapport d'armure de la deuxième couche de tissu (102), les points de liage formés entre des fils longitudinaux et des fils transversaux sont répartis de telle manière qu'il existe au moins un groupe avec 5 points de liage, qui présentent une distance mutuelle correspondant à un nombre de pas de 2 et/ou à un nombre d'avancées de 2.
  6. Bande de tissu selon la revendication 5, caractérisée en ce que, dans le rapport d'armure, il existe en outre au moins un groupe avec trois points de liage, qui présentent une distance mutuelle correspondant à un nombre de pas de 2 ou à un nombre d'avancées de 2.
  7. Bande de tissu selon l'une quelconque des revendications 1 à 6, caractérisée en ce que, dans un rapport d'armure de la deuxième couche de tissu (102), les points de liage formés entre des fils longitudinaux et des fils transversaux sont répartis de telle manière qu'il existe au moins un groupe avec quatre points de liage, qui présentent une distance mutuelle correspondant à un nombre de pas de 2 et/ou à un nombre d'avancées.
  8. Bande de tissu selon l'une quelconque des revendications 1 à 7, caractérisée en ce que les fils de liage (108, 110) forment des paires de fils de liage, dans laquelle chaque paire de fils de liage s'étend en direction longitudinale ou en direction transversale respectivement entre deux fils de la première couche de tissu et deux fils de la deuxième couche de tissu.
  9. Bande de tissu selon la revendication 8, caractérisée en ce que, respectivement, un fil de liage d'une paire de fils de liage se lie à des fils de la première couche de tissu (100) tandis que l'autre fil de liage (108, 110) de cette paire de fils de liage se lie à au moins un fil de la deuxième couche de tissu (102) et en ce que, en un point de croisement, les deux fils de liage (108, 110) de la paire de fils de liage alternent, de telle manière que l'autre fil de liage se lie à des fils de la première couche de tissu (100) tandis que le premier fil de liage se lie à au moins un fil de la deuxième couche de tissu (102).
  10. Bande de tissu selon la revendication 9, caractérisée en ce que les points de croisement des paires de fils de liage juxtaposées forment un motif régulier de points de croisement.
  11. Bande de tissu selon l'une quelconque des revendications 8 à 10, caractérisée en ce que, dans le cas de deux paires de fils de liage s'étendant directement l'une à côté de l'autre, aucun fil de liage (108, 110) ne se lie avec le même fil de liage de la deuxième couche de tissu (102).
  12. Bande de tissu selon l'une quelconque des revendications 8 à 11, caractérisée en ce qu'au moins une partie des points de liage formés entre des fils de liage (108, 110) et des fils de la deuxième couche de tissu (102) forme un motif régulier de points de liage.
  13. Bande de tissu selon l'une quelconque des revendications 8 à 12, caractérisée en ce qu'aucun fil de liage (108, 110) ne se lie à un fil de la deuxième couche de tissu (102), avec lequel se lie un fil de la deuxième couche de tissu (102) s'étendant directement à côté de ce fil de liage.
  14. Procédé de fabrication d'une bande de tissu destinée à une machine pour la fabrication de matériau en bande, en particulier de papier ou de carton, procédé dans lequel on tisse la bande de tissu (101) avec une première couche de tissu (100) du côté du matériau en bande et une deuxième couche de tissu (102) du côté de la machine, dans lequel on relie la première couche de tissu (100) et la deuxième couche de tissu (102) au moyen de fils de liage (108, 110) et dans lequel on tisse la deuxième couche de tissu (102) avec une armure satin irrégulière de 8.
EP07703981.6A 2006-02-25 2007-01-18 Bande de tissu pour machine de fabrication de materiau en bande, en particulier de papier ou de carton Not-in-force EP1991735B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE200610008812 DE102006008812A1 (de) 2006-02-25 2006-02-25 Gewebeband für eine Maschine zur Herstellung von Bahnmaterial, insbesondere Papier oder Karton
DE102006028630A DE102006028630A1 (de) 2006-06-22 2006-06-22 Gewebeband für eine Maschine zur Herstellung von Bahnmaterial, insbesondere Papier oder Karton
PCT/EP2007/050486 WO2007096218A1 (fr) 2006-02-25 2007-01-18 Bande de tissu pour machine de fabrication de matériau en bande, en particulier de papier ou de carton

Publications (2)

Publication Number Publication Date
EP1991735A1 EP1991735A1 (fr) 2008-11-19
EP1991735B1 true EP1991735B1 (fr) 2014-04-02

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EP07703981.6A Not-in-force EP1991735B1 (fr) 2006-02-25 2007-01-18 Bande de tissu pour machine de fabrication de materiau en bande, en particulier de papier ou de carton

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US (1) US7775243B2 (fr)
EP (1) EP1991735B1 (fr)
JP (1) JP2009527656A (fr)
WO (1) WO2007096218A1 (fr)

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JP5495922B2 (ja) * 2010-04-26 2014-05-21 日本フエルト株式会社 抄紙用ワイヤー
DE102010026609B3 (de) * 2010-07-09 2011-11-17 Lindauer Dornier Gesellschaft Mit Beschränkter Haftung Verfahren und Vorrichtung zur Webmusterbildung bei Geweben mit Zusatzschusseffekten
DE102010034969B3 (de) 2010-08-20 2011-11-03 Lindauer Dornier Gesellschaft Mit Beschränkter Haftung Webblatt und Webmaschine zur Webmusterbildung bei Geweben mit Zusatzmustereffekten
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WO2007096218A1 (fr) 2007-08-30
EP1991735A1 (fr) 2008-11-19
US7775243B2 (en) 2010-08-17
JP2009527656A (ja) 2009-07-30
US20090035537A1 (en) 2009-02-05

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