EP1991735A1 - 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

Info

Publication number
EP1991735A1
EP1991735A1 EP07703981A EP07703981A EP1991735A1 EP 1991735 A1 EP1991735 A1 EP 1991735A1 EP 07703981 A EP07703981 A EP 07703981A EP 07703981 A EP07703981 A EP 07703981A EP 1991735 A1 EP1991735 A1 EP 1991735A1
Authority
EP
European Patent Office
Prior art keywords
threads
fabric layer
binding
thread
fabric
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.)
Granted
Application number
EP07703981A
Other languages
German (de)
English (en)
Other versions
EP1991735B1 (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
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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

  • Fabric tape for a machine for producing web material in particular paper or cardboard
  • the present invention relates to a fabric tape for a machine for producing web material, in particular paper or cardboard.
  • US 2004/0149342 discloses such a fabric band, generally referred to as a forming fabric, which is produced with two fabric layers.
  • a first fabric layer on the web material side carries the material to be produced and is woven with a plain weave in order to minimize the risk of marking the web material to be produced by the smoothest possible surface of the web material-side first fabric part.
  • 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.
  • 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 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 length of the web material, this is the result of an irregular satin weave ensured that such dominant bond diagonals can not arise.
  • the irregular atlas binding also takes into account the basic rules for the formation of an atlas binding, such as that no binding point directly adjoins another binding point.
  • Another advantage of using an atlas binding is that it has a very large ratio of floats to binding points. That is, the individual threads involved in the fabric run largely without binding points, which on the one hand helps to reduce the tendency to mark, but on the other hand ensures that, for example, on the running side primarily threads are present, which are optimally designed for the requirements there ,
  • the irregular satin weave is an irregular 8-bind satin weave.
  • the use of such an irregular 8-binding satin weave has the consequence that on the one hand while still comparatively long floats are present, but on the other hand, these floats are not so long that the forces occurring in the manufacturing operation there is a risk that individual threads are moved could.
  • 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 weggewandte ⁇ side of 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 may provide that in a weave repeat of the second fabric layer, the bond 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.
  • the bond 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.
  • the bond points formed between longitudinal yarns and transverse yarns are distributed such that at least one group with five bond points exists that have a mutual distance corresponding to a pitch number 2 or a progression number 2 ,
  • the embodiment can continue to be such that in the binding repeat at least one group with three binding points which have a mutual distance corresponding to a gradient number 2 or a progression number 2.
  • 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.
  • the binding threads form binding yarn pairs, each binding yarn pair in the longitudinal direction or in the transverse direction between two Threads of the first fabric layer and two threads of the second fabric layer runs.
  • the procedure is advantageously such that in each case one binding thread of a pair of binder threads binds with threads of the first layer of fabric, while the other binding thread of this pair of binder threads binds with at least one
  • Thread of the second fabric layer binds, 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 binder threads 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 irregular satin weave is an irregular 6-bind satin weave.
  • the elementary advantage that due to the irregularity of the satin weave, no binding diagonals are created which are evident on the first fabric layer and thus bring with it the danger of marking in the web material to be produced, for example paper.
  • first fabric layer and the second fabric layer are constructed with longitudinal threads running in a band longitudinal direction and transverse threads running in a band transverse direction and if the floats of the transverse threads of the second fabric layer on the side facing away from the first fabric layer side of the longitudinal threads second fabric layer run.
  • the longitudinal threads can be warp threads and the transverse threads weft threads.
  • 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 thread pairs in a particularly advantageous manner when 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 by connective threads, and wherein the second fabric layer is woven with an irregular atias weave.
  • FIG. 1 shows a binding pattern containing a plurality of binding repeats of a running side or machine side second fabric layer of a fabric tape according to the invention
  • Fig. 2 is a sectional view of a weave repeat of the weave pattern illustrated in Fig. 1 illustrating the eight thread groups appearing in the weave repeat;
  • Fig. 3 is a view corresponding to Fig. 1, which the binding points of the running side fabric layer per se and also in the laufseitägen
  • Fig. 4 is a representation corresponding to FIG. 1 of an alternative
  • Fig. 5 is a representation corresponding to FIG. 2 of the shown in Fig. 4
  • FIG. 6 shows a representation corresponding to FIG. 3 of the embodiment shown in FIGS. 4 and 5;
  • FIG. 7 shows a further illustration corresponding to FIG. 1 of an alternative embodiment
  • FIG. 8 is a representation corresponding to FIG. 2 of the embodiment shown in FIG. 7; FIG.
  • FIG. 9 shows a representation corresponding to FIG. 3 of the embodiment of FIGS. 7 and 8;
  • FIG. 10 is another of FIG. 1 corresponding representation of an alternative
  • FIG. 11 is a representation corresponding to FIG. 2 of that shown in FIG.
  • FIG. 12 shows an illustration corresponding to FIG. 3 of the embodiment of FIGS. 10 and 11;
  • FIG. 13 shows a representation corresponding to FIG. 2 of a further alternative embodiment
  • FIG. 14 is a view corresponding to FIG. 3 of the embodiment shown in FIG. 13; FIG.
  • FIG. 15 is a representation corresponding to FIG. 2 of a further alternative embodiment
  • FIG. 16 is a representation corresponding to FIG. 3 of the embodiment shown in FIG. 15;
  • FIG. FIG. 17 is a representation corresponding to FIG. 2 of a further alternative embodiment;
  • FIG. 16 is a representation corresponding to FIG. 3 of the embodiment shown in FIG. 15;
  • FIG. 17 is a representation corresponding to FIG. 2 of a further alternative embodiment;
  • FIG. 16 is a representation corresponding to FIG. 3 of the embodiment shown in FIG. 15;
  • FIG. 17 is a representation corresponding to FIG. 2 of a further alternative embodiment;
  • FIG. 18 is a representation corresponding to FIG. 3 of the embodiment shown in FIG. 17; FIG.
  • FIG. 19 shows a diagram illustrating the course of the binding threads in the web material-side fabric layer in two adjacent binding reports
  • FIG. 20 is a representation corresponding to FIG. 2 of a further alternative embodiment
  • FIG. 21 shows an illustration corresponding to FIG. 3 of the embodiment shown in FIG. 20;
  • FIG. 22 is an illustration corresponding to FIG. 19 of the embodiment shown in FIGS. 20 and 21; FIG.
  • FIG. 23 shows a representation corresponding to FIG. 2 of a further alternative embodiment
  • FIG. 24 is a view corresponding to FIG. 3 of that shown in FIG.
  • FIG. 25 shows an illustration corresponding to FIG. 19 of the embodiment of FIGS. 23 and 24;
  • FIG. 26 shows a binding pattern illustrated in the manner of a binding cartridge for an alternatively constructed inventive fabric band with 6-binding irregular atlas
  • FIG. 27 shows a plurality of adjacent binding groupings.
  • FIG. reported the figure 26;
  • Fig. 28 is a plan view of a machine-side second fabric layer with
  • FIG. 29 shows a representation corresponding to FIG. 28 with shot atlas
  • Fig. 30 is a representation corresponding to FIG. 28 with pairing of
  • Fig. 31 is a representation corresponding to FIG. 28 with pairing of
  • FIG. 32 shows a warp cut of a fabric tape having a warp ratio of 2: 3;
  • Fig. 33 shows an alternative warp cut of a fabric tape having a warp ratio of 3: 3 and warp weave.
  • FIGS. 1 to 3 illustrate a first embodiment of a fabric tape 101 according to the invention, which can be used in particular as a forming fabric in machines for producing paper or board material.
  • This fabric tape 101 is constructed with two fabric layers, namely an upper web material side first fabric layer 100 recognizable in FIG. 2 and a lower, machine side second fabric layer 102.
  • the first fabric layer 100 provides the surface with which the finished web material comes into contact comes.
  • 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. 1 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, that is generally the longitudinal direction of the fabric tape 101, and eight in the transverse direction CMD extending transverse threads extends.
  • the threads running in the machine direction MD are the warp threads during the production process, while the threads extending in the transverse direction CMD are weft threads. 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 are shown. From these warp threads run the odd-numbered warp threads 1, 3, 5, 7, 9 11, 13, 15 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.
  • each of the thread groups 1 to 8 for the 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, a binding point is also created at this crossing point, in which a In those boxes in which no "X" is entered, the weft threads 106 each extend below the warp threads 2 to 16 of the second fabric layer 102, ie extend on the side facing away from the first fabric layer 100. Each "X" thus represents a so-called warp reduction in the second fabric layer 102.
  • FIG. 3 shows weave repeats of the second fabric layer 102, the binding points of the weft threads 106 with the warp threads 2 through 16 of the second fabric layer 102 being not only marked by marking respective boxes, but also FIG Bonding points of the binding threads 108 and 110 in the second fabric layer 102 illustrated are.
  • each black-colored box represents a bonding point of a weft thread 106 with a respective one of the warp threads, that is, a warp reduction.
  • the boxes marked with an "O" represent, as also illustrated in Fig.
  • 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 bonding the binding thread 108 or 110 on the outside of the involved warp thread 2 to 16, ie, with respect to the respective binding thread 108 or 110 is a warp.
  • the binding pattern selected for the second fabric layer 102 is an irregular 8-bonded satin weave, ie a weave in which a weave repeat over eight weft threads and the same number of warp threads the considered fabric layer extends.
  • the binding repeat illustrated in FIG. 1 at the top left which extends over the thread groups 1 to 8 and the warp threads 2 to 16
  • Thread groups formed bond points adjacent to binding points of the immediately adjacent thread group. In the warp direction or in the weft direction is located between each two crossing points at least one thread group or at least one warp thread.
  • the weft threads 106 extend where they do not bind with warp threads, that is to say where no warp decreases are present on the outer side of the fabric tape 101, that is to say on FIG The first fabric layer 100 remote side of the second fabric layer 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 by the weft threads 106 ready-. is gestelit. 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 fauf 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.
  • thinner threads here and to interweave them in such a way that, in interaction with the binding threads 108, 110 binding the warp threads 1 to 15 of the first fabric layer 100 between two weft threads 104 of the first fabric layer 100, a plain weave is attached to the web material side is formed.
  • each pair of binding threads 108, 110 is woven so that, as seen for example in Fig.
  • the other binding thread 110 has a point of attachment to the warp threads 2 to 16 of the second fabric layer 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 Gewebeiage 100 with correspondingly lower Mark istsneigu ⁇ g.
  • the satin weave selected according to the invention is irregular. Recognizable areas are also formed in FIG. 1, in which the binding points "X" of the weft threads 106 with the warp threads 2 to 16 are closer together, while other areas arise in which greater distances exist between the individual binding points "X" , Where the bonding points are closer together, almost a bond point density is obtained which corresponds to that of a plain weave, which also makes a very flat surface overall. In those areas in which there are larger distances between the bonding points, ie correspondingly longer floats of the weft threads 106 or the warp threads 2 to 16 are present, a very smooth, almost unstructured surface is present.
  • 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.
  • the weave repeat considered for this example starts at the second weft thread group 8, viewed from above, and ends at the first weft thread group, which is viewed from above and designated 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 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 show an embodiment in which an irregular eight-binding satin weave is provided for the second fabric layer 102, that is to say the weave pattern of the weft threads 106 with the warp threads 2 to 16 of this second fabric layer 102.
  • the bonding points are slightly different than in the embodiment described above. This leads, for example, to the fact that, as can be seen in FIG. 4, a group of five binding points "X" is present here within a binding repeat in which the binding points are spaced apart by the pitch number 2 and the progression number 2, respectively.
  • a binding repeat chosen differently, there are two groups with each three binding points in which the number of inclines or the progression number 2 is present.
  • the bonding points "O" and ( "X" form an approximately regular pattern, namely close to respective imaginary diagonals
  • the irregular satin weave binding to a very low marking tendency and above all provides for a symmetrical force distribution in the mutual connection of the two fabric layers 100, 102.
  • a third embodiment is shown in Figs. 7 to 9.
  • the weft threads 106 bind with the warp threads 2 to 16 of the second fabric layer 102 in the pattern of an irregular 8-binding atlas. Since, however, the position of the binding points "X" in FIG. 7 is selected somewhat differently with respect to the embodiments described above, local areas arise in which, as indicated by arrows in FIG. 7, four binding points "X" lie with respect to one another in that they have a mutual distance corresponding to the increase number 2 and the progression number 2, respectively.
  • 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.
  • FIGS. 10 to 12 A further alternative embodiment is shown in FIGS. 10 to 12.
  • the binding pattern of FIG. 10 shows the irregular 8-binding atlas binding, wherein 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.
  • 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 layer 102 there is at least one weft thread that does not bind with this warp thread, ie floats under it. In the embodiment of FIG. 4, this minimum distance is defined by two such non-binding, but floating weft threads 106. Otherwise, the binding pattern of the binding threads 108, 110 of the embodiment of FIGS. 10 to 12 essentially satisfies the requirements described above. That is, the crossing points of the two binding threads 107, 110 alternate alternately.
  • the binding points "O" and "X" which can be seen in FIG. 12 are also approximately located again on diagonals, that is to say they are also arranged comparatively regularly and superposed by the irregular satin weave.
  • 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.
  • Another requirement that the twine follows is that 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. 13) and at 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 to the other side, so here shifted to the right (thread group 2 in Fig. 13), these two considered binding threads, so for example the binding thread 13 of the first thread group in FIG. 13 and the binding thread 108 of the second thread group in FIG.
  • Binding pairs 108, 110 in the example under consideration thus comprising the two thread groups 3 and 4, is the first binding point of a binding thread in the other direction, ie shifted to the right (binding thread 108 of thread group 3), while the second non-symmetrical binding point in the likewise opposite direction, so here then shifted to the left (binding thread 108 of thread group 4).
  • binding thread namely the warp thread 8 of the second fabric layer.
  • FIGS. 15 and 16 show, similar to FIGS. 13 and 14, another alternative embodiment which, in terms of the weave pattern, of the second fabric layer 102 corresponds to the embodiment shown in FIGS. 7 to 9.
  • 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.
  • binding threads 108, 110 are each characterized 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. So here again the alternating change of crossing points is available.
  • 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.
  • FIGS. 15 and 16 it can be seen that between a binding point of a binding thread 108 or 110 with a warp thread 2 to 16 of the second fabric layer 102 and a binding point of this warp thread of the second fabric layer 102 with a weft thread 106 of the second fabric layer 102 at least two such weft threads 106, which do not tie with this warp thread and float under this past.
  • FIG. 16 clearly shows an aspect which is or may be provided in the case of the other embodiment variants according to the invention. If, for example, one considers the first thread group, comprising the weft thread 1 and the two binding threads 1, 2 in FIG. 16, then in the warp direction the binding thread 108 first 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 then follows in the warp direction and forms the binding point "O" with the warp thread 4. In the next thread group, ie the thread group 2 with the binding threads 3, 4, the binding thread 110 follows first and forms the binding point "O".
  • FIGS. 17 to 19 Another variant of a tissue band 101 is shown in FIGS. 17 to 19. Again, the weave pattern of the second fabric layer 102 corresponds to that shown in FIG.
  • the binding threads 108, 110 are incorporated, 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.
  • FIGS. 17 and 18 it can be seen that the location of these double bond points "OO" and "XX" is selected to have regularity in the arrangement insofar as diagonal lines are formed on which these double bond points are formed 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 is shown in FIG. 19.
  • 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 that approximately corresponds to the embodiment described above with reference to FIGS. 17 to 19.
  • the binding threads 108, 110 alternately bind with two warp threads of the second fabric layer.
  • the points of intersection of adjacent weft thread groups alternate back and forth, ie once between the warp threads 9 and 10 and once between the warp threads 5 and 6.
  • This combined with the double binding points leads in each case to a binding thread 108 or 110 to the pattern illustrated in FIG. 22, in which in adjacent weft thread groups in each case identical binding threads have a progressive offset in the weft direction with their sections forming a plain weave in the first fabric layer 100.
  • weave patterns woven in a so-called 2: 1 weft ratio were described with reference to FIGS. 1 to 22, respectively. That is, on two weft threads present in the first fabric layer 100, there is a weft thread present in the second fabric layer 102. This is illustrated, for example, with reference to FIG. 20 and with reference to the weft thread groups 1 and 2.
  • the weft thread 104 of the first weft thread group 1, the "weft thread”, is formed by the two plain weaves forming sections of the binding threads 108, 110 , the weft thread 104 of the second weft thread group and the "weft thread” formed by the plain weave
  • a total of four "weft threads” are present in the first fabric layer 100, while only the two weft threads 106 of the two weft thread groups 1 and 2 are present in the second fabric layer 102.
  • Figs. 23 to 25 show an embodiment in which a weft thread ratio of 3: 2 is present. This, too, is explained again, for example, with reference to the weft thread groups 1 and 2 recognizable in FIG. 23.
  • 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 is 3: 2.
  • the principle of the present invention can be used 106 and the warp threads 2 to 16 of the second fabric layer 102 are in principle interwoven again, as can be seen in the example of Fig. 7, thus forming an irregular 8-bonded satin weave with the resulting advantages of the plain weave forming portions of the binding threads 108th , 110 are again arranged so that s I give diagonal strips, in each of which such sections in the first Gewebeiage are present, so that also form the intersections in Fig. 25 recognizable intersection points, as was the case with the embodiments described above, form a correspondingly diagonal pattern.
  • FIG. 26 shows a weave repeat of the machine-side or run-side second fabric layer, which, as is also the case with all of the above-described fabric tapes, extends over the same number of warp threads and weft threads. Also in the illustration of Fig. 26, the rows of boxes respectively correspond to weft threads, while the columns of boxes represent warp threads.
  • the same binding repeat is used to construct a so-called shot atlas.
  • the weft threads float on the side facing the first fabric side, 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 shown in FIGS. 28 and 29 superimposes a regular distribution of the threads contributing thereto to the irregularity of the six-ply satin weave.
  • a pairwise grouping of the weft threads, as shown in FIG. 30, or of the warp threads, as shown in FIG. 31, can also be achieved.
  • the weft threads 1 and 2 or 5 and 6 respectively are within the weave repeat comprising the weft threads 1 to 6 and the warp threads 1 to 6 Thread pairs biiden, wherein the threads 3 and 6 of this binding repeat form inter-pair threads, so threads that have a greater distance to the two adjacent pairs of threads with the threads 1, 2 and 4, 5, ais the threads within a pair of yarns.
  • a warp cut is shown there, that is to say, for example, a section of the binding in the weft direction shown in FIG. 31, in which the warp threads are therefore shown cut.
  • the warp threads of the first fabric layer 100 respectively where between two immediately adjacent 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 effect can also be used if, as shown in FIG. 30, the weft threads are grouped in pairs, in which case a shot ratio of 2: 3 can be selected.
  • FIG. 33 also shows a warp cut, that is to say warp threads in section and cut in the weft direction.
  • the connection between the two fabric layers 100 and 102 is not realized by weft threads, as in the embodiments explained above, but by warp threads, with warp threads 200 and 202 also forming a warp thread pair that jointly forms the weave ,
  • warp threads 200 and 202 also forming a warp thread pair that jointly forms the weave
  • 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 After a change of these two warp threads then forms this other thread, the plain weave in the first fabric layer 100.
  • a respective pair of warp threads 200 and 202 is actually regarded as a single warp.
  • the pair formation in the second fabric layer 102 is used in this binding to that in each case 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 S 1 of that warp 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 further 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 weft thread grouping shown in FIG. 30 can be used in the same way in the second fabric layer , in this case, the representation of Fig. 33 would be interpreted as a shot cut.
  • Influencing whether, as shown in Figs. 28 and 29, the weft yarns and / or the warp yarns should be evenly spaced, or whether, as shown in Figs. 30 and 31, pairwise grouping is obtained should, 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 in the weaving process to the tension present on 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 Depending on the direction of deviation, either a grouping in the region of the weft threads or a grouping in the region of the warp threads can be achieved in the case of deviations from this range of tension, as shown in FIGS. 28 and 29.
  • the grouping can be achieved or prevented.
  • the grouping can be enforced or the most uniform possible spacing of the individual threads can be obtained by the Gu character, so the specification of the primary determined by the thread density per unit length of a woven tape and the thread diameter material filling.
  • the weft threads will dodge.
  • 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 can be used, which have only the task to make the connection between the two fabric layers to see, but otherwise not be used to realize a particular basic binding 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 is that an irregular satin weave is used, in which case the occurrence of dominant binding diagonals is avoided.
  • the invention uses the advantageous effect of comparatively long floats in the running, second fabric layer, whereby excessively long floats can be avoided, in particular when using a 6-cohesive or 8-cohesive satin weave.
  • the regularity in the weave pattern of the running side, second fabric layer with certain regularities in the binding 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 points of intersection 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)

Abstract

La bande de tissu selon l'invention pour machine de fabrication d'un matériau en bande, en particulier de papier ou de carton, comprend une première couche de tissu (100) située du côté du matériau en bande et une deuxième couche de tissu (102) située du côté machine. La première couche de tissu et la deuxième couche de tissu sont reliées l'une à l'autre par des fils de liaison (108, 110) et la deuxième couche de tissu est tissée en une armure atlas irrégulière.
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 Active 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 true EP1991735A1 (fr) 2008-11-19
EP1991735B1 EP1991735B1 (fr) 2014-04-02

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EP07703981.6A Active 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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Country Link
US (1) US7775243B2 (fr)
EP (1) EP1991735B1 (fr)
JP (1) JP2009527656A (fr)
WO (1) WO2007096218A1 (fr)

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DE102007046113A1 (de) * 2007-09-21 2009-04-02 Voith Patent Gmbh Formiersieb
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
DE202014001502U1 (de) * 2013-03-01 2014-03-21 Voith Patent Gmbh Gewobenes Sieb mit flachen Kettfäden
CN109208389B (zh) 2013-11-14 2021-03-12 Gpcp知识产权控股有限责任公司 确定织物特征的工艺
USD852220S1 (en) * 2017-03-28 2019-06-25 Alexander Dunaevsky Display screen or portion thereof with animated graphical user interface
IT202000000637A1 (it) * 2020-01-15 2021-07-15 Feltri Marone S P A Tessuto triplo di fabbricazione della carta

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Also Published As

Publication number Publication date
EP1991735B1 (fr) 2014-04-02
WO2007096218A1 (fr) 2007-08-30
JP2009527656A (ja) 2009-07-30
US7775243B2 (en) 2010-08-17
US20090035537A1 (en) 2009-02-05

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