JP3764050B2 - Paper machine and method for producing flexible paper - Google Patents

Abstract

A paper machine for manufacturing soft paper comprises a press section (3) with a shoe press nip, through which a substantially impermeable belt (16) and a felt (15) run with the fibrous web (1) enclosed between them, a drying cylinder (5) and a transfer roll (17) forming a nip for transfer of the web to the drying cylinder. According to the invention the belt (16) comprises a carrier with a compressible polymer coating having a hardness of 50 to 97 Shore A, which polymer coating has a web-contacting surface with a degree of roughness in unloaded state of Rz=2-80 m, measured in accordance with ISO 4287, and a lower degree of roughness of Rz=0-20 m when the polymer coating is compressed by linear load of 20-220 kN/m on the belt as measured in a non-extended press nip, the belt and the web-carrying felt being arranged to run together not until they enter the press section, the belt running directly to the press section. Further, the belt runs from the shoe press to the drying cylinder to carry the web to the transfer nip, the felt running away from the belt before a water film formed in the nip on the belt breaks up. A device (31) is also provided for applying adhesive on the drying cylinder.

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is a paper machine for producing a fibrous flexible paper web,
-A wet section having a headbox, a forming roll and inner and outer fabrics running around the forming roll, between which the fibrous web is formed;
-A press part having at least one shoe press with a shoe press roll and a counter roll, said roll forming an extended press nip, comprising a substantially water-impermeable belt and a press felt; A substantially water-impermeable belt and press felt travel through a press nip that extends around the fibrous web between them,
-Including a drying section having a drying cylinder and a transfer member, the transfer member together with the drying cylinder forming a transfer nip for transferring the fibrous web to the drying cylinder.
[0002]
The present invention is also a method for producing a fibrous flexible paper web on a paper machine, wherein the paper machine comprises:
-A wet section having a headbox, a forming roll and inner and outer fabrics running around the forming roll, between which the fibrous web is formed;
-A press part having at least one shoe press with a shoe press roll and a counter roll, said roll forming an extended press nip, comprising a substantially water-impermeable belt and a press felt; A substantially water-impermeable belt and press felt travel through a press nip that extends around the fibrous web between them,
The invention relates to a method using a paper machine comprising a drying part having a drying cylinder and a transfer member, wherein the transfer member forms a transfer nip with the drying cylinder to transfer a fibrous web to the drying cylinder.
[0003]
[Prior art]
A paper machine of the type described above is disclosed in US Pat. No. 5,393,384, particularly in FIG. Such a paper machine has a belt that is impermeable to water, and the belt travels in a loop through an extended press nip formed by a shoe press roll and a counter roll. The press felt is led directly to the press nip where the belt runs with an impervious belt and a paper web. The paper web is transferred from the forming fabric to an impermeable belt which carries the paper web on its underside to the press nip and to the drying cylinder. Thus, after the paper web has been transferred from the forming fabric to the impermeable belt, the impermeable belt carries the paper web for a relatively long distance. For this reason, there is a risk that the paper web will not adhere strongly enough over the entire distance and thus will peel off the impermeable belt. According to the '384 patent, the adhesion between the impervious belt and the paper web is greater than the adhesion between the press felt and the paper web. The impermeable belt in question is incompressible and has a smooth web-carrying surface. Such a smooth impervious belt can acquire a fluid film on its smooth web-carrying surface as the belt, press felt and paper web pass together through the press nip, and Later, for this reason, it is common for paper webs to adhere to an impermeable belt rather than a press felt that does not have a smooth surface when the press felt and the impermeable belt travel away from each other. Known to. This state is also used in US Pat. No. 4,483,745. However, in the paper machine according to U.S. Pat. No. 5,393,384, the impervious belt and the drying cylinder both have a smooth surface, thereby trying to bring the paper web into contact. Instead of transferring to the smooth surface of the drying cylinder after passing through the nip, there is a considerable risk that the paper web will continue to adhere to the smooth surface of the impervious belt. Perhaps even the application of a large amount of adhesive to the envelope of the drying cylinder will not ensure adhesion of the paper web to the drying cylinder.
[0004]
DE-195 48 747 discloses a paper machine for producing crepe tissue paper, comprising a press composed of a shoe press roll, a counter roll and a suction roll, the counter roll being a suction roll Together with the shoe press roll to form a second extended press nip. The felt passes through the two press nips with the paper web and then carries the paper web to the Yankee dryer and passes around a transfer roll where the felt and paper web form an uncompressed nip with the Yankee dryer. The paper web is transferred to the Yankee dryer. A suction area for dewatering the felt is provided before and after the first press nip, and the suction area before the press nip is arranged in the suction roll, whereas the suction area after the press nip is in the side loop. In which the felt travels alone, joining the paper web again to the second press nip at the entrance. One drawback with such a paper machine is that the paper web is again exposed to moisture by the wet felt before reaching the Yankee dryer.
[0005]
U.S. Pat. No. 5,298,124 describes a compressible transfer belt for use in a paper machine or board machine, eliminating the open draw of the paper web and easily releasing the paper web. Or it can be transferred to the belt. The transfer belt carries the paper web through the press portion, the press portion being composed of one or more press nips, consisting of a plurality of drying cylinders and a belt through a loop surrounding the transfer roller that forms a nip with the transfer belt. Carry to the dry part. Each press is also provided with a felt that passes the press nip and surrounds the paper web with the transfer belt. The impervious transfer belt is also designed so that when the transfer belt pressure stops after the press nip, the fluid film formed in the press nip between the transfer belt and the paper web breaks and its release characteristics Improved so that the paper web can be more easily transferred to the fabric or other belt running on the loop. There is no suggestion or suggestion of a transfer belt that carries the paper web to the drying cylinder of the tissue machine.
[0006]
U.S. Pat. No. 5,298,124 proposes an excellent disclosure of the problem, and the transfer belt in cooperation with the press felt performs in a satisfactory manner and discloses the characteristics and design of such a transfer belt. And this can be found in patent specifications US-A-4,483,745, 4,976,821, 4,500,588, 5,002,638, 4,529,643 and CA- A-1, 188,556. According to US-A-5,298,124, the important issues for a transfer belt cooperating with a press felt are: a) removing the paper web from the press felt without causing unstable problems; b) Cooperating with the press felt in one or more nips to ensure optimal dewatering and high quality of the paper web, and c) removing the closed draw paper web from the press part press to the subsequent press part press. Transfer to a paper receiving fabric or belt, or to a pick-up fabric in the dry section. As mentioned above, the transfer belt for the press portion of the paper machine described in US Pat. No. 5,298,124 has a web contact surface that is substantially impermeable to water and air, It has a pressure microscale form. Under the influence of the press nip pressure of the press part, the transfer belt is compressed to reduce the microscale roughness of the surface, resulting in a much smoother surface and a continuous thin layer of water on it. A film can be formed.
[0007]
Surprisingly, a belt of the type described in US Pat. No. 5,298,124 is also well suited for use in a paper machine according to the present invention, wherein a closed draw flexible paper web is used as a press shoe. It has been found that the press nip can be transferred to the Yankee dryer in the drying section of a flexible paper machine. As is known, a shoe press nip provides a high degree of dewatering.
[0008]
[Problems to be solved by the invention]
It is an object of the present invention to provide an improved paper machine and an improved method for producing flexible paper, wherein the paper machine and the method are very dry solid content fibers in front of a drying cylinder. Enables the production of quality webs and enables high production efficiency at a reasonable cost, ensuring that the fibrous web is transported to the drying cylinder by an impervious belt. Can move.
[0009]
[Means for Solving the Problems]
The paper machine according to the present invention is:
a) a substantially water-impermeable belt comprising a carrier with a compressible polymer coating on the side facing the paper web, the polymer coating having a Shore A hardness in the range of 50 to 97; The polymer coating has a web contact surface with a recoverable degree of pressure sensitive roughness, the web contact surface being measured according to ISO 4287, Part I, with a roughness of R _Z = 2-80 μm in the unloaded state. And when compressed by a linear load of 20-220 kN / m as measured in a press nip where the polymer surface does not extend on a substantially water-impermeable belt, R _Z = 0-20 μm Having a low degree of roughness,
b) the press felt is arranged to carry the fibrous web from the point located downstream of the forming roll or downstream of the forming roll to the press part;
c) The substantially water-impermeable belt and the press felt carrying the web are arranged to run together, and both enter the press part and surround the fibrous web between the two, The impermeable belt is arranged to run directly to the press part,
d) a substantially impervious belt is arranged to run from the shoe press to the drying cylinder to carry the fibrous web to the transfer nip;
e) The press felt is substantially impervious to water just after the extended press nip and before the water film formed on the substantially impermeable belt breaks in the extended press nip. Arranged to run away from the belt,
f) An apparatus for applying an adhesive is arranged in front of the transfer nip to apply a continuous adhesive layer on the envelope of the drying cylinder and / or on the fibrous web.
[0010]
The method according to the invention comprises:
a) Pressing with the aid of a substantially water-impermeable belt comprising a carrier and a compressible polymer coating on the side facing the paper web, said polymer coating having a Shore A in the range of 50 to 97 The web contact surface has a hardness and a pressure-sensitive recoverable roughness of the web contact surface, the web contact surface being measured according to ISO 4287, Part I, a degree of R _Z = 2-80 μm in an unloaded condition R _Z = 0-20 when compressed with a linear load of 20-220 kN / m as measured in a press nip having a roughness of and the polymer surface is not extended on a substantially water-impermeable belt has a low degree of roughness of mu m,
b) using a press felt to carry the fibrous web from the point located downstream of the forming roll or downstream of the forming roll to the press part;
c) Run the substantially water-impermeable belt and the press felt carrying the web together, and after both enter the press part, surround the fibrous web between them to make the material substantially impermeable. Run the belt directly to the press part,
d) running a substantially impermeable belt from the shoe press to the drying cylinder to carry the fibrous web to the transfer nip;
e) Immediately after the extended press nip, away from the substantially impervious belt in that point before the water film formed on the substantially impervious belt is broken in the extended press nip. Run the press felt in the direction,
f) It is characterized in that a continuous adhesive layer is applied on the enveloping surface of the drying cylinder and / or on the fibrous web by means of an adhesive application device located at a point in front of the transfer nip.
[0011]
Surprisingly, the transfer belt according to US-A-5,298,124 is intended for pressing in the press part and can be used to transfer the paper web from the press part to the dry fabric, but it is flexible. Can be advantageously used to transfer a fresh paper web directly from a shoe press nip to a Yankee dryer or other drying cylinder. As is well known, the conditions in the Yankee dryer are completely different from those in the press nip. Yankee dryers do not cause pressure to directly dewater the flexible paper web. Rather, the problem is that the flexible paper web is supported on the envelope of the Yankee dryer and the fibers of the flexible paper web are effectively attached to the surface of the Yankee dryer, thereby providing good heat transfer to the paper web. Whether or not it is achieved. This is exactly the effect achieved with the transfer belt of the paper machine according to the present invention, which in press felts as described in DE-195 48 747, after the last press nip of the press part. This is not achieved in order to re-wet the web and to prevent satisfactory adhesion. This cannot be achieved with the transfer belt described in U.S. Pat. No. 5,393,384 for the reasons described above or to a minor extent. The compressibility of the transfer belt used in the paper machine according to the invention results in a lower pressure that is characteristic at the point of attachment, which leads to an increase in operating speed, i.e. a higher production rate. This property also results in increased evaporation of water from the flexible paper web, ie, faster drying of the flexible paper web in the Yankee dryer, which also contributes to the higher efficiency of the process. The increased efficiency can be used to increase machine speed or to reduce energy consumption while maintaining the same production.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in more detail with reference to the drawings.
1 to 3 schematically show part of a paper machine for producing a flexible paper fibrous web 1 such as tissue or other sanitary paper products. Each paper machine includes a wet part 2, a press part 3, and a dry part 4.
[0013]
The wet portion 2 includes a head box 7, a forming roll 8, an endless inner fabric 9 for transportation, and an outer fabric 10 made of endless covering forming fabric. The inner and outer fabrics 9 and 10 each surround a plurality of guide rolls 11 and 12 and run in their own loops.
[0014]
The drying part 4 includes a drying cylinder 5 covered with a hood 30. A Yankee dryer is suitable for the drying cylinder. A crepe doctor 21 is provided on the outlet side of the drying portion, and the fibrous web 1 is peeled off from the Yankee dryer 5. The coating device 31 is provided to apply an appropriate adhesive to the envelope surface of the Yankee dryer 5 immediately before the transfer nip.
[0015]
The press part 3 is constituted by a shoe press provided with a shoe press roll 14 and a counter roll 19, and these rolls 14 and 19 form a press nip extending from each other. The press portion also includes an endless press felt 15 that runs in a loop around the guide roll 6 and an endless substantially impermeable transfer belt 16. The substantially water-impermeable belt 16 travels in a loop surrounding the counter roll 19, the transfer roll 17, and the plurality of guide rolls 18. The transfer roll forms with the Yankee dryer 5 a low linear pressure, i.e. a transfer nip of about 30-60 kN, through which the substantially water-impermeable belt 16 passes.
[0016]
In the embodiment shown in FIGS. 1 and 2, the press part 3 also includes a roll press, which is composed of a suction press roll 13 and the counter roll 19 to form a press nip, A substantially impermeable belt 16 and press felt 15 pass through with the fibrous web 1. After this initial press nip, the press felt 15 is separated from the fibrous web 1 and the substantially water-impermeable belt 16 and a side loop around the suction press roll 13 and the two guide rolls 32. Led to. The press felt 15 rejoins with the fibrous web 1 and the substantially water-impermeable belt 16 just before the extended press nip. If desired, a suction device may be placed within this side loop of the press felt 15 to increase the water absorption capacity of the press felt at the entrance of the extended press nip.
[0017]
In the embodiment shown in FIGS. 1 and 3, the inner fabric 9 of the wet part 2 is felt and is used as a press felt 15 that is transported to the press part 3 and thus returns to the forming roll 8. Run.
[0018]
In the embodiment shown in FIG. 2, the inner fabric 9 of the wet portion 2 is a woven fabric, in which case the press felt 15 runs around a pick-up roll 20 located near the loop of the woven fabric 9, The press felt 15 and the fabric 9 run in contact with each other to transfer the fibrous web from the fabric 9 to the press felt 15. The pickup roll 20 may be provided with a suction shoe (not shown). Alternatively, the pickup roll and the suction shoe may be replaced with a pickup suction box.
[0019]
FIG. 4 schematically shows a part of a paper machine according to another embodiment of the present invention. This is similar to that shown in FIG. 1 except that the press felt 15 is not led to the side loop between the two press nips, but is accompanied by a counter roll 19 and a fibrous web. 1 is held between a substantially water-impermeable belt 16 and a press felt 15. This embodiment can be used when there is little risk of the fibrous web getting wet again.
[0020]
In the embodiment according to FIGS. 1 to 4, the counter roll 19 is a smooth roll and is arranged in the loop of the substantially water-impermeable belt 16. In another embodiment for the press part according to FIG. 3 (not shown), the positions of the rolls 14 and 19 are reversed, i.e. the shoe press roll 14 is in a substantially impermeable belt 16 loop. Then, the counter roll 19 is disposed in the loop of the press felt 15. In such a form, the counter roll may be a suction roll, a grooved roll, or a blind drilled roll.
[0021]
The substantially impermeable and elastically compressible transfer belt 16 is of the type described, for example, in US Pat. No. 5,298,124. The substantially water-impermeable belt 16 used in the paper machine according to the present invention is compressible under the influence of the pressing force working at the press nip. Thus, the substantially water-impermeable belt 16 is not compressed upstream and downstream of the press nip and is compressed when passing through the press nip, but faces its surface, the fibrous web. The web carrying surface has a high degree of roughness when the substantially impervious belt is uncompressed and a lower degree of roughness when the substantially impervious belt is compressed. The web conveying surface of the substantially impermeable belt in the compressed state is on the web conveying surface when the substantially impermeable belt passes through the press nip with the press felt and the fibrous web. The web-carrying surface of a substantially water-impermeable belt in an uncompressed state is sufficiently smooth to form a continuous fluid film, and the substantially water-impermeable belt is thicker. After extended sufficiently rough to continuous fluid film breaks. More specifically, the substantially water-impermeable elastic compressible transfer belt comprises a seam that can be joined instead of an endless carrier and comprises a polymer coating on the web contact surface, the polymer coating comprising: has a Shore a hardness of 50 to 97, polymer coating, ISO4287, as measured in accordance PartI, it has a roughness degree of _R Z = _{2~80 μ} m in an uncompressed state, 20～220KN When a linear load of / m acts on a substantially water-impermeable belt, it is compressed to a lower degree of roughness of R _Z = 0 to 20 μm and further acts on the substantially water-impermeable belt. When it stops, it also has the ability to recover to its uncompressed degree of roughness. The _RZ value is more clearly expressed as the average distance between the five highest peaks and the five deepest valleys at a reference length measured from a line parallel to the average line and not intersecting the surface contour. The height is 10 points as defined in the ISO standard. A substantially impermeable transfer belt is 6 m ³ / m ² when measured according to the procedure described in “Standard Test Method for Air Permeability of Textile Fabrics, ASTM D 737-75, American Society of Testing and Materials”. Preferably, the air permeability is less than 1 minute. As described in the aforementioned US Pat. No. 5,298,124, the polymer coating of the substantially water-impermeable belt is made of acrylic polymer resin, polyurethane polymer resin, polyurethane / polycarbonate polymer composite. It is advantageous to comprise such a polymer composition. The polymer coating may also include filler particles with a hardness different from that of the polymer material, which may be kaolin clay, a polymer material, or a metal, preferably stainless steel.
[0022]
The transfer belt included in the paper machine according to the present invention is also manufactured in the manner described in US Pat. No. 5,298,124. Thanks to the use of the polymer composition described above, an elastically compressible surface layer is achieved on the belt. After the actual surface has worked in the manufacturing process, a surface giving a controlled morphology is obtained. The compressibility and morphology of the surface layer is not significantly affected by the wear that can occur during operation. The dense polymer surface is easy to keep clean and can withstand the cleanliness by providing a doctor blade directly on the belt surface. This must be taken into account when selecting materials and combinations to ensure that the belt does not age at the edge of the paper web that contacts the Yankee dryer. You must choose something that you can withstand. Otherwise, the edge must be sprayed, for example, immediately before or after the Yankee dryer passage to cool the edge.
[0023]
The carrier of the transfer belt is endless and includes a base element of the type that can be endless in some way. This description covers in particular also an openable base element provided with a seam, which is initially endless with a suitable seam when installed in a paper machine. The carrier may be composed of a multi-layered woven fabric made from polymeric monofilaments such as polyesters, polyamides, and the like. The base element may also be composed of a (non-woven) fibrous web held together by a binder, bonded winding, polymer foil / film, warp knitting or the like. What is required is that the carrier is formally stable in both the machine direction and the transverse direction, which contributes to the stability of the belt against mechanical stresses in these directions. If the carrier is completely surrounded by a polymer coating, the polymer coating can be applied on one side and completely penetrate the backside, or it can be applied on the other side after first being applied on one side. The Configurations that require a particularly thin belt may occur, in which case it may be desirable to apply the coating from only one side for limited penetration. In this case, it is essential that the uncoated surface of the base element is wear resistant and easy to keep clean.
[0024]
The paper machine according to the invention with a single felt press nip produces a fibrous web with a high dry solids content before the drying part, ie up to 55%, which is used today. It should be compared with the dry solids content up to 45% achieved in the machine. This improvement can be used to either operate the paper machine at higher production volumes or to reduce energy consumption in the dry section. This can also reduce the diameter of the drying cylinder.
[0025]
In the illustrated and described embodiment, a guide roll may be positioned just before the transfer roll 17 in the substantially impermeable belt 16 loop, if desired.
[0026]
In the embodiment illustrated and described, a transfer member composed of the transfer roll 17 is used. In another embodiment (not shown), the transfer roll is replaced with a substantially water-impermeable belt itself, which belt is around a predetermined portion of the drying cylinder, for example within a fan angle of 30-60. Run to form a transfer nip that extends with the drying cylinder.
[Brief description of the drawings]
FIG. 1 shows a paper machine according to a first embodiment of the present invention.
FIG. 2 shows a paper machine according to a second embodiment of the present invention.
FIG. 3 shows a paper machine according to a third embodiment of the present invention.
FIG. 4 shows a paper machine according to a fourth embodiment of the present invention.

Claims (16)

A paper machine for producing a fibrous flexible paper web (1),
-Including a wet section (2) having a headbox (7), a forming roll (8) and inner and outer fabrics (9, 10) running around the forming roll (8); Between which a fibrous web (1) is formed,
A press part (3) having at least one shoe press with a shoe press roll (14) and a counter roll (19), said roll forming an extended press nip and being substantially impermeable to water Press nip comprising a substantially belt (16) and a press felt (15), wherein the substantially water-impermeable belt (16) and the press felt (15) extend between both surrounding a fibrous web Travel through
-A drying part (4) having a drying cylinder (5) and a transfer member (17), the transfer member together with the drying cylinder (5) forming a transfer nip for transferring the fibrous web to the drying cylinder (5); ,
a) The substantially water-impermeable belt (16) comprises a carrier with a compressible polymer coating on the side facing the paper web, the polymer coating having a Shore A hardness ranging from 50 to 97 And the polymer coating has a pressure sensitive, recoverable degree of roughness of the web contact surface, the web contact surface being measured according to ISO 4287, Part I, with R _Z = 2-80 μm in an unloaded condition. When compressed by a linear load of 20-220 kN / m as measured in a press nip having a degree of roughness and the polymer surface is not extended on a substantially water-impermeable belt, R _Z = 0 Having a low degree of roughness of 20 μm ,
b) The press felt (15) carries the fibrous web (1) from the point located downstream of the forming roll (8) to the forming roll (8) and upstream of the pressing part (3) to the pressing part (3). Are arranged so that
c) The substantially water-impermeable belt (16) and the press felt (15) for transporting the web are arranged to run together, and after both enter the press section (3), the fibrous web Surrounding (1) between them, a substantially water-impermeable belt (16) is arranged to run directly to the press part,
d) A substantially water-impermeable belt (16) is arranged to run from the shoe press to the drying cylinder (5) to carry the fibrous web (1) to the transfer nip;
e) The press felt (15) is located just after the extended press nip, but before the water film formed on the substantially impermeable belt (16) is broken in the extended press nip. Arranged to travel away from the substantially water-impermeable belt (16),
f) A device (31) for applying an adhesive is placed in front of the transfer nip to provide a continuous adhesive layer on the enveloping surface of the drying cylinder (5) and / or on the fibrous web (1). A paper machine characterized by being coated.   The inner fabric (9) in the wet part is composed of felt, which is arranged to run through the press part and is also used as a press felt (15) in the press part. The paper machine according to 1.   The inner fabric (9) in the wet section is a woven fabric, and a pick-up device (in the press felt loop upstream of the press section) is used to transfer the fibrous web (1) from the woven fabric (9) to the press felt. The paper machine according to claim 1, wherein 20) is arranged.   The press portion is disposed upstream of the shoe press and includes a roll press, including a suction press roll (13) disposed in a loop of the press felt (15), and a substantially water-impermeable belt (16). 4. The paper machine according to claim 1, further comprising a counter roll (19) arranged in the loop.   5. The paper machine according to claim 4, wherein the counter roll (19) of the shoe press is also a counter roll (19) of the roll press.   The press felt (15) is separated from the fibrous web (1) and guided into a side loop surrounding the suction press roll (13) and at least one guide roll (32), which side loop is a roll. 6. The paper machine according to claim 4, wherein the paper machine extends from a press nip of a press to an extended press nip of a shoe press. The air permeability of the substantially water-impermeable belt (16) is measured according to the procedure described in “Standard Test Method for Air Permeability of Textile Fabrics, ASTM D 737-75, American Society of Testing and Materials”. The paper machine according to any one of claims 1 to 6, wherein the paper machine is smaller than 6 m ³ / m ² / min.   8. A paper machine according to claim 1, wherein the transfer member comprises a transfer roll (17) arranged in a loop of a substantially water-impermeable belt (16). .   The transfer member comprises a substantially water-impermeable belt (16) that travels around a predetermined portion of the drying cylinder (5) to create an extended transfer nip. The paper machine according to any one of 1 to 7. A method for producing a fibrous flexible paper web (1) on a paper machine, wherein the paper machine comprises:
-Including a wet section (2) having a headbox (7), a forming roll (8) and inner and outer fabrics (9, 10) running around the forming roll (8); Between which a fibrous web (1) is formed,
A press part (3) having at least one shoe press with a shoe press roll (14) and a counter roll (19), said roll forming an extended press nip and being substantially impermeable to water Press nip comprising a substantially belt (16) and a press felt (15), wherein the substantially water-impermeable belt (16) and the press felt (15) extend between both surrounding a fibrous web Travel through
-A drying part (4) having a drying cylinder (5) and a transfer member (17), the transfer member together with the drying cylinder (5) forming a transfer nip for transferring the fibrous web to the drying cylinder (5); ,
a) Pressing with the help of a substantially water-impermeable belt (16) comprising a carrier and a compressible polymer coating on the side facing the paper web, said polymer coating ranging from 50 to 97 And a web contact surface with a recoverable degree of pressure sensitivity, the web contact surface being measured according to ISO 4287, Part I, R _Z = 2-80 μm under no load conditions When compressed with a linear load of 20-220 kN / m as measured in a press nip having a roughness of m and the polymer surface is not extended on a substantially water-impermeable belt, R _Z = Having a low degree of roughness of 0-20 μm ,
b) Press felt (15) for transporting the fibrous web (1) from the point located downstream of the forming roll (8) or upstream of the pressing part (3) to the pressing part (3). )Using,
c) Run the substantially water-impermeable belt (16) and the press felt (15) that transports the web together so that they enter the press section (3) and then the fibrous web ( Surrounding 1), running a substantially water-impermeable belt (16) directly to the press part,
d) running a substantially water-impermeable belt (16) from the shoe press to the drying cylinder (5) to carry the fibrous web (1) to the transfer nip;
e) Immediately after the extended press nip, before the water film formed on the substantially impermeable belt (16) in the extended press nip breaks, it is substantially impermeable. Run the press felt (15) in the direction away from the belt (16),
f) a continuous adhesive layer by means of a device (31) for applying an adhesive placed at a point in front of the transfer nip on the envelope surface of the drying cylinder (5) and / or on the fibrous web (1). A method characterized in that the method is applied.   11. A method according to claim 10, characterized in that a felt is used as the inner fabric (9) in a wet part, the felt is run through the press part, and this felt is also used as a press felt (15) in the press part. .   Transfer of the fibrous web (1) from the inner fabric (9) in the form of a fabric to the press felt (15) by means of a pick-up device (20) arranged in the press felt loop upstream of the press part The method according to claim 10.   The fibrous web is first dewatered with a roll press in the press section, said roll press comprising a suction press roll (13) arranged upstream of the shoe press and arranged in the loop of the press felt (15). 13. The method according to claim 10, further comprising a counter roll (19) arranged in a loop of the substantially water-impermeable belt (16).   The press felt (15) is separated from the fibrous web (1) and guided to a side loop surrounding the suction press roll (13) and at least one guide roll (32), the side loop being a roll 14. The method of claim 13, wherein the method extends from a press nip of a press to an extended press nip of a shoe press. Air permeability is less than 6 m ³ / m ² / min when measured according to the procedure described in “Standard Test Method for Air Permeability of Textile Fabrics, ASTM D 737-75, American Society of Testing and Materials” 15. A method according to any one of claims 10 to 14, characterized in that a substantially water-impermeable belt (16) is used.   11. A substantially water-impermeable belt (16) is also used as said transfer member, which runs around a predetermined part of the drying cylinder (5) and creates an extended transfer nip. The method according to any one of 1 to 15.

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