FI122309B - Method and apparatus for transferring one fibrous web from one backing cloth to another - Google Patents

Description

The present invention relates to a method of transferring a fibrous web from a first to a second support fabric according to the preamble of claim 1. The invention also relates to an apparatus according to the preamble of claim 7.

The invention thus relates to the transfer of a fibrous web from one support fabric to another. Thus, the method and apparatus of the invention are suitable, for example, for transferring a web from a wire section to a press felt and a press to a drying section. Particularly preferably, the method and apparatus can be used to transfer a web from a first web of paper or board to a second web.

In the following, the prior art paper web transfer method and apparatus will be described in more detail using the papermaking press section as an example. Nowadays, the press section following the wire section of a papermaking machine usually consists of two successively arranged presses, in which the paper web is generally carried from one press nip supported by at least one felt, more generally a fabric, whereby the paper web travels part way between two webs. In this context, tissue can also be referred to as a transfer belt. When removing the paper web from the first press, i.e. the first press nip, the paper web must first be removed from the first press,

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The first one, for example the upper felt, and hold onto the second, for example the lower felt. Thereafter, the web, supported by said second felt, is applied to a second press or to a dry end where the web, or web, is transferred to the felt or dryer fabric of the second press. This is done, in principle, by first contacting the web with the first felt of the second press, detaching it from the second felt of the first press, holding it in the first felt of the second press, and further guiding it to the drying section supported by the press nip.

Critical points in web entry include sites where the web must be detached from felt and transferred to the next tissue. The risk here is to either break or tear the track, unless the removal is done carefully. The web release point is most often associated with a felt guide roll, around which the felt of the first press is rotated while the second felt extends relatively directly past the roll. As the first felt wraps around the roll, the web is naturally subjected to the roll diameter and rotational speed, but in any case a relatively large centrifugal force, which naturally tends to release the web from the first felt. However, it has been found that the use of centrifugal force alone cannot be relied upon, but that the release of the web must usually be assisted by some sort of suction arrangement before said roll.

There are two basic types of such suction arrangements, suction rolls and transfer boxes, the use of which is described, for example, in U.S. Patent No. 5,888,354. In principle, both basic types operate in such a way that suction is induced through the felt which is still supporting the web so that the web both detaches from the felt on the side opposite to the suction device and remains on the felt on the suction device. Suction rollers are reliable devices in themselves, which usually have no problems in the actual use

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^ detaching the web from the first felt or holding the web on the surface of the second felt. However, the use of suction rollers causes other 00 § problems. First of all, in suction rolls, the opening of the suction sector is adjusted

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3 demanding. In addition, suction rollers are expensive to purchase, use and maintain.

A second alternative to a transfer imaging box is a significantly cheaper purchase and 5 use. For example, U.S. Patent 4,113,557 discloses the use of a transfer suction box to remove a paper path from a wire. The publication details how the paper web is passed with the wire and felt around the roll. Next to the roll, however, a transfer suction box is provided for detaching the fibrous web from the wire. 10 In order to achieve high suction on the fibrous web, i.e., to ensure that the felt remains in the transfer suction box, the felt and transfer suction box are arranged such that the direction of the felt and its web is deflected from the wire by a transfer suction box. In other words, the convex lid of the suction box curves the web of felt and increases the wear of both the cover and the felt.

However, the transfer suction box cannot be used with very high speed machines because, as already mentioned, the suction box lid is worn and also consumes felt on its surface. The reason for this is that the felt passage is traditionally arranged such that the felt changes its direction of travel over the suction box and the felt tension presses the felt against the suction box lid. The suction box cover is also long in the machine direction, which contributes to the length of the wear contact. In other words, both the above-described folding of the felt in the suction box and the vacuum in the suction box absorb the felt against the suction lid, whereby both the felt and the suction lid are worn quickly. This wear

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^ further increases the high velocity of the felt over the suction box lid. So that-

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gJ, therefore, the use of the transfer imaging box has been decreasing all the time

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§ as the speed of fiber web machines increases.

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The present invention seeks to overcome the drawbacks of prior art devices by presenting a novel type of solution for transferring a fiber web from one support fabric to another.

The objects of the invention are mainly achieved by a method of transferring a fiber web from a first support fabric to a second support fabric, wherein the fiber web is brought to the suction device at on the surface of the second, second tissue. The method is essentially characterized in that the method comprises inserting a second tissue side of the suction box into a first tissue supporting the fibrous web path, and aligning the suction box suction with the suction box on the opposite side of the guide roll

In this way, the transfer of the web from one support fabric to another is assured and the speed of the machine contributes to the success of the transfer as the invention utilizes the aerodynamic effects of the support fabric and the movement of the roll. As a result of the motion of the support fabric and the roll, the sealing friction of the roll and the support fabric creates an overpressure area caused by air movements, which enhances the release of the web from the surface of the first support fabric.

i O? 25 g After the strips cut from the web have already been removed, the suction

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preferably in the transverse direction of the web travel, in addition to the web tn, to an area outside the web edges but inside the web. This has a beneficial effect on the success of the web transfer.

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5 of this. In particular, the peripheral areas of the web behave calmly during the transfer in this manner.

In the method, a second suction box side is introduced into a second tissue supporting the fibrous web 5 by deflecting the passage path of the second supporting fabric by means of a suction box. When passing through the suction box, the path of the second tissue forms an angle of preferably 170-179 °, preferably 173-177 °.

The tension of the web can be kept in a controlled manner so that the velocity of the second support fabric is higher than that of the first support fabric. With the track transfer method of the invention, the use of speed differences is advantageous because e.g. the contact distance between the first and second support fabric is sufficiently short in the machine direction. The short contact-15 distance also provides that the contact surface between the support fabric and the suction box lid can be effectively and simply lubricated by a lubricating water jet device located in front of the suction device in the web travel direction. When the contact surface in the machine direction is short, the amount of lubricating water is relatively small, which reduces the risk of re-wetting of the web.

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The method according to the invention may be used to transfer the fiber web from the wire section of the fiber web machine to the press section, to transfer the fiber web from the press section of the fiber web machine to the drying section and / or to move the fiber web from the preceding press i? Other uses in the fiber web manufacturing or finishing process and / or equipment are also possible.

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The apparatus according to the invention for transferring a fibrous web web from a first support fabric to a second support fabric comprises a suction device which:

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30 is provided in connection with the second support fabric, and for moving the web from the first support fabric to the surface of the second support fabric, and a guide roll arranged to the other side of the web and the first fabric relative to the suction device. The apparatus is essentially characterized in that the suction device is a suction box configured to deflect the passage of the second tissue to the first supporting tissue, and that said suction box is arranged to provide suction action on the from the surface.

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Such a device is reliable and utilizes the speed of the machine in transmission since the invention utilizes the aerodynamic effects of the support fabric and the movement of the roll. As a result of the movement of the support fabric and the roll, the overlapping pressure of the roll and the supporting fabric creates an overpressure area caused by the movements of the air, which enhances the release of the web from the surface of the first guide roll.

The suction box is a transfer suction box with a lid and at least one suction slot in the lid. Said at least one suction slit is disposed in the direction of travel of the support fabric 20 in front of the guide roll so that at least the suction slot of the cover is substantially located at the first support fabric located in the closing web formed by the support fabric and roll mantle, δ

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According to an embodiment of the invention, the lid of the transfer suction box is convex. The transfer suction box is preferably arranged such that the lid comprises a first list and a second list, and that the suction slot is arranged

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^ between lists. In this case, it is preferable that the coverage area of the second support fabric on the cover of the Slide actuator box extends in the machine direction from the first 00 section of the cover to the second list.

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The transfer suction box is preferably such that the moldings are fixed to a special fitting and the fittings are attached to the counterpart profile of the suction box by means of a form lock. This allows for easy attachment and fast changing of the moldings.

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According to one embodiment of the invention, the suction slot preferably extends in the longitudinal direction of the box, in addition to the width of the web, to an area outside the web edges but inside the web edges. Preferably, a slot or row of discrete openings in the transverse direction of the fibrous web 10 is located at the level passing through the center line of the guide roll axis and the line where the fibrous web web is detached from the first fabric. In this case, the gap or row of discrete openings may be longer than the width of the fibrous web and shorter than the width of the tissue on the suction side.

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According to one embodiment of the invention, the invention involves a head-exporting step wherein the vacuum level of the suction device (s) is at a first, elevated vacuum level, and after the threading step, when the web passes normally, the vacuum device is at a normal vacuum level. At elevated vacuum, the pressure is preferably 10 to 50 kPa below ambient pressure and at normal vacuum the pressure is 1 to 10 kPa below ambient pressure. A normal vacuum level is advantageous since the tissue typically does not come into contact with the lid of the suction device. However, in more demanding transports or, for example, in heavy species, the normal underpressure level can be raised to 20 kPa. Although the tissue may be g in contact with the lid, tissue wear is not yet significant-

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Other features of the method and apparatus of the invention for transferring a fiber web from one support fabric to another are apparent from the appended claims.

Other advantages of the invention include the following.

- reliable transfer of web from one tissue to another - significantly less costly to obtain and use than the current suction roll, since the suction box is in itself less expensive in construction 10 than the suction roll, not to mention the suction roll and its energy consumption;

In the following, the method and apparatus of the invention will be described in more detail with reference to the accompanying schematic drawings, in which Figure 1 illustrates one prior art apparatus for transferring a fibrous web from one backing web to another; Fig. 3 shows a side view of a suction box according to an embodiment with a slot for clarifying the position of the slot relative to the guide roll, Fig. 5 shows a web transfer point in Fig. 3, and g Fig. 3; 6 shows an embodiment of attachment of moldings to a transfer suction

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tn oo Fig. 1 is a partial view of a prior art and US patent application.

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5,888,354 treated paper machine press sections with hardware for transferring 9 paper webs for one press section to another. The press section shown in the figure consists of a first press 10 and a second press 20. The first press in the figure is represented by the shoe roll 12 and its counter roll 14, between which a nip paper web W runs between two felts 32 and 53 in the figure. The first felt 32 wraps the shoe roll 12 as a looping loop around the felt guide roll 16, which in this solution is movable as shown in the figure, and continues upward. The second felt 34, in turn, rotates over the counter roll 14. The paper web W is detached from the first felt 32 in the distance between the counter roll 14 and 10 by the felt guide roll 16 by means of a transfer suction box 18. Hereby, the suction of the suction box 18 is introduced through the second felt 34 into the fibrous web W to detach the web from the first felt 32. While the first felt 32 is no longer moving along the lid of the suction box 18 but slightly higher, the paper web W is easily detached. At the same time 15 also the suction of the suction box ensures that the paper web W adheres to the second felt 34. In this solution, by means of a suction box 18 the second felt 34 is raised so that it is possible to ensure that the second felt remains constantly in contact with the cover of the suction box 18. This, in turn, ensures that the paper web W is subjected to a uniform suction throughout 20 to reliably adhere to the second felt 34. However, this procedure places a relatively high wear load on the lid of the suction box, resulting in rapid wear of both the lid and the pressed tin felt. Especially at higher speeds, e.g.

£ 5 over 1100 m / min.

i <2 25 g The fibrous web web W is passed over the second felt 34 to the press section

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^ for the second part 20, the so-called. a second press represented by a third in the figure

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felt 22 and transfer suction roll 24. The purpose of transfer suction roll 24 is to extract the fiber 00 from the second felt 34 of the first press 10 before the other

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30 pa 34 is guided downwardly around roll 26. In principle, the suction roll 10 detaches the fibrous web from the second felt 34 in the same manner as described above for the transfer suction box 18. By means of the suction roll 24, the third felt 22 representing the second press 20 advances the paper web W until the fourth felt (not shown) on the second press comes from below 5, whereupon the paper web is introduced between the two felts to the second press nip.

Fig. 2 shows a similar press section of a papermaking machine, also discussed in US Patent 5,888,354, where the same references 10 also describe the same components. In fact, the only difference to the solution shown in Fig. 1 is that the transfer suction box 18 of Fig. 1 is replaced by a suction roll 18 'which provides the same function as the suction roll 18. This solution thus has neither the wear problem of the felt or the suction box cover 'Thanks. 15 It is true that this problem has been remedied by a solution which is expensive to acquire, operate and maintain. In other words, compared to the suction box, the suction la needs not only bearings, rotary pressure seals, but also the use of a common pump for the vacuum pump and piping.

Figure 3 shows an overview of an embodiment of the invention, i.e. a press section of a fiber web machine comprising apparatuses according to a preferred embodiment. The press section o of Fig. 3 consists of a press 40 built around the first press nip 42. The web W enters the press 40, for example with respect to my fiber 25 machine wire, supported by wire 44. From the wire 44, the web is moved to be supported by a first press felt 46 by means of a suction device 48 and a guide roll 50

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^ in the vicinity. In this embodiment, the supporting fabric of the web W is the wet fabric and the press felt.

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More specifically, the suction box is a transfer suction box 48 arranged to provide suction action in the region of the closure web 50 of the guide roll 50 on the opposite side of the fiber web W before the guide roll 50 detaches the web 44 from the surface of the fabric 44. Closure spigot G in this context refers to the area between the roll shell and the tissue passing over the roll in which the air pressure level is increased due to the air currents generated by the roll surface and the movement of the tissue. The structure and operation of the transfer imaging box in the concept of Figure 3 will be described in more detail below.

In the apparatus of Fig. 3, a guide 15, on both sides of the suction device, arranged in a support fabric 46 to which the web W is transferred, has a roller 47, 49 at a relatively short distance from one another to ensure a smooth passage of the fabric. In addition, the short passage between the rolls results in a more controlled passage of the support fabric over the transfer suction box and thus more secure transfer of the web. Further, in order to secure the web support, a portion of the web supporting the web may be used in a so-called. 20 deep groove rolls 49, as disclosed in Finnish Patent Application Fl 20076039.

The web W supported by the first press felt 46 is introduced into the press nip 42 between the first press felt 46 and the second press felt 52. From the nip 42, the web passes between the felt 46 and the felt 52, i.e., into the tissues, and further down to the guide roll 54 after the nip. Johtote-

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The web 54 is in the forward direction of the web, relative to the guide roll 54, of the web

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on the opposite side, a transfer suction box 56 is provided for detaching the web from the press felt 46 and transferring it to the surface of the support fabric 52. the press

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The tin blanket 46 continues upward in the pattern. The web W is supported by the press felt 12 52 on the web path to the next part 60 of the fiber web machine, which may be a drying section or, in some cases, a subsequent press section. The transfer to the next part of the machine takes place by first bringing the web W into contact with a support fabric 66 such as a dryer fabric or press-5 felt, then detaching from the second press felt 52 to support the support fabric 66 by a guide roll 70 70 In the apparatus according to the invention, the support fabric 66 on which the web W is transferred is arranged on the two sides of the suction device in a direction of travel of the support fabric 66, 74 with a relatively short distance from each other to ensure a smooth passage of the fabric. Further, in order to secure the web support, a portion of the web supporting the web may be used in a so-called. a deep groove roll 74 such as that disclosed in Finnish Patent Application Fl 15 20076039. The deep groove roll 74 may also be located underneath the fabric and web, for example, for transfer to a drying section.

Figure 4 schematically shows a transfer box 56 for use as a suction device in Figure 3, but the illustration also applies, mutatis mutandis, to the transfer box 68, which, unlike the transfer box 56 and 48, has only one suction slot. The position shown in the figure is not significant in itself, but the relative position of the elements shown in the figure section is more decisive. The transfer of the web from the surface of the first support fabric 46 to the surface of the second support fabric occurs as follows. The fibrous web web W is introduced on the surface of the first 25 support webs 46 (the web from which the web is removed) towards the surface of the first support web, i.e., inside the web of support webs.

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(jj roll 54, from left to right in Fig. 4) The transfer suction box 56 is arranged in the inner rotation of the second backing web, i.e., inside the backing web loop, relative to the forward suction box 56, opposite to the fibrous web web W.

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30 on the side of the guide roll 54 in the region of the engaging pin G before the guide roll 54, specifically so that the suction effect of the device is applied to the fiber web in this area. As a result of the movement of the first support fabric 46 and the air currents created by the rotation of the roll, the pressure closes in the closing kite, which is higher than the atmospheric pressure. Since the lid 80 of the transfer box is located at a distance Z from the surface of the shell 54 of the roll 54, the overpressure of the closing web facilitates the transfer of the web W away from the surface of the support fabric 46. The minimum distance Z is typically 5 to 50mm, preferably 7 to 30mm. This also has the advantage that the machine speed affects the overpressure prevailing in the gate G, which has a positive effect on the release of the web 10 W from the surface of the fabric 46. Simultaneously applying a suction effect on the side opposite to the web W of the support fabric, here the second support fabric 52, the web is moved from the first support fabric in principle, the more securely the machine speed is.

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The transfer suction box 56 is arranged to deflect the path of the second tissue 52 such that the incoming and outgoing tissue of the transfer suction box forms an angle α. The angle α is 170-179 °, preferably 173-177 °. In this way, the support fabric to which the web is transferred is introduced by the suction device 20 into the support fabric and at the same time into the surface of the web from which the web W is displaced by deflecting the path of the second fabric 52. During the transfer of each web for the machine to another, i.e., from the operating group to another, any unwanted elongation in the web may be removed so that the second support webs travel faster than the first supporting webs.

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Figure 4 also shows schematically a transfer suction box 56

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lid 80. The lid 80 is provided with at least one first suction nozzle 00 § 82 through which a negative pressure arranged in the box is transmitted to a movable dryer.

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The suction slot 82 implements the transfer of the web W from the surface of the first tissue to the surface of the second tissue, i.e. the actual web transfer operation is performed in the suction slot 82 between the two strips 86, 88. the web transfer slit 82 is substantially disposed at the first-to-5 support fabric 46, which is located in the closure web G formed by the support fabric and roll 54 jacket.

The cover 80 thus comprises a first strip 86 and a second strip 88 between which said web transfer suction slot 82 is formed. The transfer suction box shown in Figure 4 10 further comprises a third strip 90 disposed in the web direction at a distance from one of the second strips 88. A second suction slit 83 is disposed between the third strip 90 and the second strip substantially extending from the support fabric 52 and overlying support 15 tissue in the area of 45 opening kidneys. Another suction nozzle is the so-called. the web end-toimurako. Preferably, the transfer suction box is shaped such that the vacuum suction port, i.e. the second suction port 83, has a lower vacuum than the web transfer suction port, i.e. the first suction port 82, for example by connecting the second suction port 83 to the transfer suction collecting chamber 20 with a smaller suction channel 82.

The lid 80 is convex so that the inlet edge of the lid on the first strip and the leaving edge on the second strip form at least an angle α of ≤225 rye. The convexity may consist of a surface shape rotating about a single center of curvature, but the convexity may also be

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^ variable curved surface. The surface 88 of the latter, the second list 88, at least in the vicinity of the working edge, may coincide in the direction of the second supporting fabric which is detached from the leaving edge. The machine dimension of the molds, i.e. the width of the molds is 5 - 60 C / l 30 mm, but preferably 10 - 40 mm.

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The machine direction length of a single suction slot, which may also be understood in the direction of the longitudinal axis of the suction box, also typically is 8 to 40mm, but preferably 15 to 20mm. With larger slit widths than 5, the felt has been found to bend into the slit, resulting in excessive wear of both moldings and support fabric. In addition, the need for suction power increases significantly. The material of the cover strips 88, 86 is preferably collected and shaped so that the corners of the strips are rounded to minimize wear on both the strip and the support fabric. The rounding preferably has a radius of curvature of 10 to 6 mm. Typically, the ceramic surface is made by sequentially gluing ceramic bodies to the surface of the strip body. In some cases, the use of plastic moldings may also be considered, particularly in a transfer suction box against a drying wire.

Figure 5 shows a similar transfer point as the transfer between press felt 46 and press felt 52 in Figure 3. Figure 5 is a bottom view of Figure 3 with the press felt 46 and guide roll 50 omitted from the figure. The figure shows the fibrous web W and its transverse width Lw, the support fabric 46 and its transverse width 20 Lf, and the slits in the machine direction of the suction device to limit the gaps in its transverse width Ls. The width Ls of the suction device is adjustable by moving the arranged sealing member of the bladder, as illustrated by arrows A.

Figure 5 clearly shows that the press felt 46, slot 82 and web W have a decreasing width in that order. In other words, the support fabric 46 25 is wider than the slot 82 and the slot is wider than the fibrous web W. This structure achieves that at the edge of the web both

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At the ^ min side, the air layer is absorbed. The inventors have stated that this in tely stabilizes the movement of the web. Fig. 5 also shows an adjustable vacuum source 87 by means of which a vacuum is formed in the suction device.

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Furthermore, it has proven to be advantageous if the overhang of the edge of the press felt 46 over the slit 82 is larger than the slant of the slit 82 over the web W, i.e., the dimension Y must be greater than X in Figure 5. Preferred dimensions are 5-150. mm X and especially 40-70 mm 5 X. Good results were obtained with Y values of 100 - 200mm. It should be noted that in all embodiments of the transfer points, the slot can also be made in one or more rows extending across the web (width direction). In this case, the openings are either round holes or even short slots or the like. The devices described operate at suction box pressures of preferably less than 50 kPa. Under normal operating conditions, a sufficient vacuum is usually 1-10 kPa. The magnitude of the vacuum depends on e.g. dry matter, tissue and web tightness and surface, and adhesive properties of a pair of supporting tissues. Particularly in head-tapping situations, a vacuum higher than normal, for example a vacuum of 10-50 kPa, can be applied. This can significantly improve the smoothness of the head stroke. This normal vacuum level is advantageous because the tissue will typically not come into contact with the suction lid. For more demanding shifts or heavy species, for example, the normal vacuum level can be raised to 20 kPa. Although the tissue may be in contact with the lid, tissue wear is not yet significant.

[0040] This can significantly improve the smoothness of the threading of the head. However, it is essential to note that, in the situation of Figure 5, the web is already of a width i <2 25 such that it can be passed through substantially substantially undisturbed fibers through the web machine. This means that the current forming parts

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Edges of the web must be removed from the edges of the web.

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Therefore, it is clear that if the edge strips were cut just before the 00 § transfer suction box, it must be ensured that the cut edge strips do not move

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30 with the actual web W forward in the transfer suction box, but follow the support tissue from which the actual web is transferred to the next support fabric. In such a situation, unlike the previous disclosure, the width of the Imura-on Ls is substantially the width of the cut web, i.e., Ls is approximately Lw. For example, securing the passage of the edge strips to the pulper can be accomplished by means of suction or blowing means 51 located at the edge strips.

Figure 6 illustrates in more detail the attachment of the moldings 88.86 to the transfer box 48. The molds 88, 86 are attached to an adapter 120 which is connected to the matching profile 122 of the suction box 48 by a form fitting to facilitate the exchange of the moldings 10. Preferably, the moldings are resiliently supported, e.g. by a gas-filled hose 150, which in Fig. 6 is arranged between the adapter 120 and the counter profile 122. This arrangement allows flexibility of the moldings in the event of a sudden thicker layer of fiber webs between the suction box and the guide roll due to a malfunction. This way the Ιΐε-Ι 5 tat will move downward in the pattern and will not be damaged. The suspension of the strips can also be achieved by elastomers or other, e.g., metal spring elements.

In order to optimize the position of the felt guide roller and the displacement suction box 20 mounted adjacent to each other at each of the shown transfer points, either the guide roller or the box, or possibly both elements, must be arranged to move, δ

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^ From the foregoing, it is worth remembering that, apart from the above? As with the examples, the apparatus and method according to the invention g can also be applied to other fiber webs for internal displacement of the press section.

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to the transfer points of the track or web. Likewise, it is clear that, although m is discussed above solely on a fiber web machine, the invention is equally well suited for use with paper and board machines. So the word

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The 30 fibrous webs above are also understood to include cardboard as one of its subspecies. In general, therefore, the invention is applicable to all applications where the web is transferred from one support fabric to another. It is to be noted that the individual features disclosed in connection with the various embodiments may also be used within the scope of the present invention in conjunction with other embodiments and / or combine different features than the disclosed features if the technical possibilities so permit.

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Claims (20)

A method of transferring a fibrous web from a first supporting web (44; 46; 52; 66) to a second supporting web (46; 52; 66), in which method the fibrous web (W) is transferred onto the surface of the first supporting web to a suction pad (48; 56; 68), the fibrous web is detached from the first web located on the opposite side of the web relative to the suction pad and the fiber web is passed on the second web on the side of the web, characterized in that the second web (46; 52; 66) on the side of the suction cup (48; 56; 68) in the method is brought into contact with the first web carrying the fiber web, that the suction of the suction cup (48; 56; 68) is directed towards the fiber web in the area of the closing gap (G) of the a guide roller (50; 54; 70) located on the opposite side of the fiber web (W) relative to the suction vane (48; 56; 68) and the fiber web (W) is detached from the web (44; 46; 52) on the guide roller (50). ; 54; 70) side before the articulation roller (50; 54; 70). Method according to claim 1, characterized in that the suction is exerted in the transverse direction relative to the running direction of the web, except on the web, in the area which lies outside the edges of the web (W) but within the edges of the supporting webs (44; 46; 52). O Method according to claim 1, characterized in that the second web (46; 52; 66) on the side of the suction cup (48; 56; 68) is moved in the method to the first web which carries the fiber web by redirecting it. second web (46; 52; 66) tread using the suction (48; 56; ® 68) · LO C \ l LO 00 OO CM Method according to claim 3, characterized in that the tread of the second web (46; 52; 66) forms an angle (a) of 170 - 179 ° as it traverses the suction. Method according to any of the preceding claims, characterized in that the running speed of the second web is higher than the running speed of the first web. Method according to any one of claims 1 to 4, characterized in that suction is performed in two stages, the first stage transferring the web (W) from the first web to the surface of the second web and the second stage acting as a suction pouring the web attached to the surface of the other web. 7. Devices for transferring a fibrous web from a first support web to a second support web, which devices comprise a suction device (48; 56; 68) arranged in connection with the second web, and with which device the web (W) is moved from the first support web (44, 46, 52, 66) over to the surface of the second web (46, 52, 66), and one on the other side of the web (W) and the first web (44, 46, 52) in relation arranged in the suction device (48; 56; 68), a guide roller (50; 54; 70), characterized in that the suction device is a suction blank arranged to re-direct the running web of the second web in connection with the first web, and said suction position is arranged to effect a suction action in the area of the closing gap of a guide roller (50; 54; 70) located on the opposite side of the fiber web (W) relative to the suction vane (48; 56; 68) prior to the guide roller (50 54; 70) in order to remove the CL and fiber web (W) from the surface of the web (44; 46; 52) p ledvalsens (50; 54; 70) m S, page. 00 o o (M 8. Apparatus according to claim 7, characterized in that the suction blanket is a transfer suction sleeve (48; 56; 68) having a lid (80) and the lid (80) is provided with at least one suction gap (82). Devices according to claim 8, characterized in that the cover (80) is provided with two suction slots (82). Devices according to claim 9, characterized in that the cover (80) has a suction slot (82) for transfer and a suction slot (83) for holding. 10 Devices according to claim 8, characterized in that the suction slot (82) is arranged in the running direction of the supporting fabric in front of the guide roller (50; 54; 70) so that the suction slot (82) in the cover (80) is substantially in the place of the first web ( 44; 46; 52; 66) which is located in the closing gap 15 (G) formed by the support fabric and the sheath of the roller (50; 54; 70). Devices according to claim 8, characterized in that the cover (80) of the transfer suction suction (48; 56; 68) is convex. Devices according to claim 8, characterized in that the lid comprises a first strip (86) and a second strip (88) and the suction gap (82) is arranged between the strips. δ C \ 1 Devices according to claim 13, characterized in that the second o? The cover area of the support fabric on the cover suction cover (80) extends g in the machine direction from the first strip (86) of the cover to its second strip (88). CL σ> m Transfer suction sleeve according to claim 13, characterized in that the strips CO § (86; 88) are attached to a special passport piece (120). (M 30 Transfer suction suction according to Claim 13, characterized in that the pass pieces (120) are fixed to the impact profile (122) of the suction suction (48; 56; 68) by forced control. Transfer suction suction according to claim 8, characterized in that the suction gap extends in the longitudinal direction of the leather, except over the web width, over to the area which lies outside the edges of the web (W), but inside the web edges. Use of the transfer suction sheet according to any one of the preceding claims 8 - 17 for transferring the fiber web from the wire portion to the press portion of a machine with fiber web. Use of the transfer suction sheet according to any of the preceding claims 8 - 17 for transferring the fiber web from the pressing portion to the drying portion of a machine with fiber web. Use of the transfer suction sheet according to any of the preceding claims 8 - 17 for transferring the fiber web from the preceding press of the press portion 20 to the following press in a machine with a fiber web. δ CVJ o i CD X CC CL CD LO CM LO 00 O O CM