DE102020114686A1 - Method and device for producing a structured fibrous web - Google Patents

Abstract

The invention relates to a method for producing a structured fibrous web (21), in particular a structured tissue web (21). The fibrous web (21) is first formed from a fibrous suspension between an inner dewatering belt (3) and an outer dewatering belt (2). The fibrous web (21) is then transported lying on the inner, dewatering belt (3) to a transfer area (8) and transferred to a belt. The belt (9) is guided together with the fibrous web (21) through a press nip (16) and the fibrous web (21) is transferred to an embossing belt (15). Then the fibrous web (21) together with the embossing belt (15) is passed through a transfer nip (18) for transferring the fibrous web (21) to a heated metallic surface for drying. The invention is characterized in that the belt (9) is designed as a water-absorbing belt (9), in particular as a press felt, and the transfer area (8) by a suction roll located in the loop formed by the water-absorbing belt (9) (6) is formed, which is partially wrapped in a common looping area by the inner drainage belt (3) and the water-absorbing belt (9). The press nip (16) is designed as a dewatering nip of a dewatering press (10). The invention also relates to a machine for carrying out the method.

Description

The invention relates to a method for producing a structured fibrous web, in particular a structured tissue web, comprising the following steps: Forming the fibrous web from a fibrous suspension, the fibrous suspension being introduced through a headbox between an outer dewatering belt and an inner dewatering belt and the outer dewatering belt and the inner The dewatering belt partially wraps around a forming roller and transports the fibrous web lying on the inner dewatering belt to a transfer area. The fibrous web is transferred to a belt in the transfer area and then the fibrous web is passed together with the belt through a press nip and transferred to an embossing belt which is also guided through the press nip and has a structure for structuring the fibrous web. Then the fibrous web together with the embossing belt is guided through a transfer nip to transfer the fibrous web for drying to a heated metallic surface, in particular to the surface of a drying cylinder.

The invention also relates to a machine for producing a fibrous web, in particular a tissue web,

Methods and devices of this type are for example from the document WO2013 / 009256 A1 known. The fibrous web is formed in the forming area between an outer dewatering screen and an inner felt belt, both belts partially wrapping around a forming roll. The felt belt transports the fibrous web to a drainage nip, in which the fibrous web is drained and transferred to an endless, smooth, impermeable belt with a polyurethane coating. This smooth belt leads the fibrous web to a first transfer nip. In this, the fibrous web is removed from the smooth belt by an embossing belt and guided to another transfer nip and transferred to the surface of a Yankee cylinder. The fibrous web is removed from the smooth belt in the first transfer nip by applying a speed difference between the smooth belt and the structured embossing belt, the smooth belt running faster than the embossing belt.

The object of the invention is to improve the known methods and devices with regard to the quality of the fibrous web produced, the runability of the machine, the operating costs and the increase in maximum speed.

1. a. Formieren der Faserstoffbahn aus einer Faserstoffsuspension, wobei die Faserstoffsuspension durch einen Stoffauflauf zwischen ein äußeres Entwässerungsband und ein inneres Entwässerungsband eingebracht wird und das äußere Entwässerungsband und das innere Entwässerungsband eine Formierwalze teilweise umschlingen;
2. b. Transportieren der Faserstoffbahn auf dem inneren Entwässerungsband liegend zu einem Übergabebereich;
3. c. Übergeben der Faserstoffbahn im Übergabebereich auf ein Band;
4. d. Führen des Bandes zusammen mit der Faserstoffbahn durch einen Pressnip;
5. e. Übergeben der Faserstoffbahn auf ein ebenfalls durch den Pressnip geführtes, eine Struktur zur Strukturierung der Faserstoffbahn aufweisendes Prägeband;
6. f. Führen der Faserstoffbahn zusammen mit dem Prägeband durch einen Transfernip zur Übergabe der Faserstoffbahn zur Trocknung an eine beheizte metallische Oberfläche, insbesondere an die Oberfläche eines Trockenzylinders. Die Erfindung zeichnet sich dadurch aus, dass
7. g. das Band in Schritt c) als ein wasseraufnehmendes Band, insbesondere als Pressfilz, ausgeführt wird;
8. h. der Übergabebereich durch ein, in der durch das wasseraufnehmende Band gebildeten Schlaufe liegenden, Saugelement, insbesondere einer Saugwalze, gebildet wird, welches teilweise durch das innere Entwässerungsband und das wasseraufnehmende Band in einem gemeinsamen Umschlingungsbereich umschlungen wird;
9. i. der Pressnip in Schritt d) als Entwässerungsnip einer Entwässerungspresse ausgeführt wird;

The object is achieved by the features of claim 1. A method for producing a structured fibrous web, in particular a structured tissue web, is proposed. The process consists of the following steps:

1. a. Forming the fibrous web from a fibrous suspension, the fibrous suspension being introduced through a headbox between an outer dewatering belt and an inner dewatering belt and the outer dewatering belt and the inner dewatering belt partially looping around a forming roll;
2. b. Transporting the fibrous web lying on the inner dewatering belt to a transfer area;
3. c. Transferring the fibrous web in the transfer area to a belt;
4. d. Guiding the tape together with the fibrous web through a press nip;
5. e. Transferring the fibrous web to an embossing belt which is also guided through the press nip and has a structure for structuring the fibrous web;
6. f. Guiding the fibrous web together with the embossing belt through a transfer nip to transfer the fibrous web for drying to a heated metallic surface, in particular to the surface of a drying cylinder. The invention is characterized in that
7. G. the tape in step c) is designed as a water-absorbing tape, in particular as a press felt;
8. H. the transfer area is formed by a suction element, in particular a suction roller, located in the loop formed by the water-absorbing belt, which is partially wrapped around by the inner dewatering belt and the water-absorbing belt in a common looping area;
9. i. the press nip in step d) is designed as a dewatering nip of a dewatering press;

This solution according to the invention improves the web guidance and runability, so that the production speed can be increased. The speeds of the inner dewatering belt and of the water-absorbing belt in the transfer area, which lies within the common looping area, are essentially the same. The transfer takes place without a speed difference. This also applies accordingly to the transfer of the fibrous web from the water-absorbing belt to the embossing belt in the embossing nip of the dewatering press. This results in both better runability and protection of the coverings due to less wear. In addition, on the side facing the embossing belt, the fibrous web is given a structure corresponding to the configuration of the surface of the embossing belt facing the fibrous web.

In the transfer area, the water-absorbing tape is guided in direct contact over the suction element which has a suction zone and which can be designed as a suction roll. Due to the negative pressure applied in the suction zone, the water contained in the water-absorbing tape and part of the water contained in the fibrous web are sucked off and removed. In this way, the water-absorbing tape is conditioned and the dry content of the fibrous web is increased even before the embossing nip. As a result, the water-absorbing tape in the press nip of the dewatering press can completely absorb the water that occurs. As a result, a higher dry content of the fibrous web is achieved before the transfer nip and before the transfer to the metallic heated surface. Since mechanical dewatering is more energetic than thermal drying through the metallic surface, it can save energy. After the transfer area, a suction device can also be provided within the loop formed by the water-absorbing tape to increase drainage. The higher dry content of the fibrous web before the embossing nip, on the one hand, also favors the embossing behavior and, on the other hand, the resilience of the fibrous web is higher and therefore better.

In an advantageous embodiment, the water-absorbing band is designed as a press felt. Due to the softness of the press felt, a very good and sustainable surface structure can be introduced into the fibrous web and thus have a positive effect on the quality of the structured fibrous web. In addition, the press felt efficiently absorbs the water squeezed out in the embossing nip,

In a possible practical embodiment, the inner dewatering belt for structuring the fibrous web is designed to be structured. The fiber suspension brought into the forming zone through the headbox comes into contact with the structured inner dewatering belt at the beginning of the forming process. The dewatering of the fiber suspension results in a very stable and permanent surface structure of the fiber web. In this case, the fibrous web is structured with two superimposed structural patterns.

The inner drainage band is preferably made permeable. So it is permeable to water and air.

In advantageous, alternative developments, the inner drainage belt is designed as a woven structured belt or as an embossing felt or as a monolithic membrane with openings or bores or as a perforated, multi-layer laminated film for structuring the fibrous web.

In a practical case, the structure of the inner drainage belt can differ from the structure of the embossing belt. However, the structures can also be the same.

Surface structures of fibrous webs, in particular of tissue webs, and embossing belts for producing such surface structures are known. The structures of the embossing belts include elevations and depressions which are spaced apart from one another and have dimensions perpendicular to the surface of the fibrous web. The larger the distances and / or dimensions, the coarser the structure and vice versa. The smaller the distances and / or the dimensions, the finer the structure. The elements of the structures can also be arranged in certain patterns, for example diagonally. The elements of the structures can have certain spatial shapes, such as cylindrical, cuboid, pyramidal, linear, elongated shapes, etc., for example. It is known that there are also woven, structuring coverings, such as TAD screens, for example. Embossing felts are felt bands on the surface of which structures made of plastic are applied for embossing one side of the fibrous web. These embossing belts can in principle be used for the invention both as an embossing belt and as an inner drainage belt.

Structuring strips made of monolithic membranes have openings or bores that are mechanically, for example punched, drilled or produced with laser beams or water jets. The structuring elements are the openings or bores into which areas of the fibrous web are pressed during the structuring process. Perforated, multi-layer laminated foils for structuring the fibrous web are constructed in a similar manner. However, they have several layers that perform different functions, such as generating tensile strength. These embossing tapes are preferably permeable to air and water. Topographical contours can be superimposed on the surfaces of this type of structuring strips with openings or bores in order to achieve an additional structuring effect. These embossing belts can in principle be used for the invention both as an embossing belt and as an inner drainage belt.

The superposition of various structures in the fibrous web from several subsequent Structuring processes with structuring tapes with different structures can lead to a better quality of the fibrous web. Better water absorption values can be achieved with tissue webs.

In an advantageous practical case, the structure of the inner drainage belt can be made finer than the structure of the embossing belt. In this case, the so-called hairiness can be reduced and the drying temperature can be increased as a result. In this context, hairiness is understood as the protrusion of fine fibers from the fiber surface. When drying on the drying cylinder, these fibers can burn and cause an odor. In addition, the drying temperatures must be reduced.

In an advantageous practical case, the common looping area is designed with a length in the circumferential direction of the suction element of more than 80 mm, in particular more than 150 mm, preferably more than 280 mm. On the one hand, this ensures a safe transfer of the fibrous web to the water-absorbing tape. The inner dewatering belt is preferably removed from the suction element or from the suction roll earlier than the water-absorbing belt.

To increase the dryness by heating the fibrous web, steam or hot, dry or moist air can be supplied from the inside of the loop formed by the inner dewatering belt in the common looping area. This can be done, for example, by arranging a steam blower box or a hot air hood opposite the wraparound area. The heating can also take place after the removal from the inner dewatering belt.

The press nip is preferably designed as an extended press nip. The press nip is not only used for dewatering, but also represents the embossing nip. The long dwell time in the extended press nip ensures good structuring and, at the same time, gentle, adequate dewatering.

In a practical development, the extended press nip is formed by a shoe roll and a counter roll, which is designed in particular as a suction press roll.

In the event that the counter roll is designed as a suction press roll, it is advantageous if the embossing belt is designed as a monolithic membrane or as a perforated, multi-layer laminated film. These have openings or bores that are mechanically, for example punched, drilled or generated with laser beams or water jets. The structuring elements are the openings or bores into which areas of the fibrous web are pressed during the structuring process. The land areas between the openings or bores are impermeable. This causes a higher dewatering in interaction with the negative pressure acting in the suction press roll, with a constant line force of the shoe roll.

In a further possible embodiment, the counter roller is arranged within the loop formed by the water-absorbing tape and the shoe roller is arranged within the loop formed by the embossing tape. The shoe roll comprises a press shoe and a press cover. The press jacket preferably has grooves on its outer surface. These allow air to flow in during the pressing in the press nip, especially if the counter-element is designed as a suction press roll.

The fibrous web is pressed in the extended press nip preferably with a line force of less than 300 kN / m, in particular less than 200 kN / m, preferably in the range between 100 kN / m to 300 kN / m.

Furthermore, the embossing band can be made permeable.

The embossing band used is preferably a band made from a perforated monolithic membrane or a band made from a perforated, multi-layer laminated film. A structured, woven screen can also be used as the embossing belt.

In an advantageous embodiment, the transfer nip is formed by a transfer roller lying in the loop formed by the embossing belt and the heated metallic surface. The transfer roller can be designed with a circumferential surface that is grooved on the outside. The grooves facilitate the transfer of the fibrous web to the heated, metallic surface.

The heated, metallic surface can be the surface of a counterpart transfer element which, together with the transfer roller, forms the transfer nip. The counter transfer element can be, for example, a drying cylinder, a Yankee cylinder or a heated metal belt.

In an advantageous practical embodiment, cleaning and conditioning devices are assigned to the structuring belts. This can be, for example, the use of water jets, high pressure nozzles, vacuum suction devices, flushed inlet nips on guide rollers for the structuring belts.

1. a. einen Formierbereich zum Formieren der Faserstoffbahn aus einer Faserstoffsuspension, wobei die Faserstoffsuspension durch einen Stoffauflauf zwischen ein äußeres Entwässerungsband und ein inneres Entwässerungsband eingebracht wird und das äußere Entwässerungsband und das innere Entwässerungsband eine Formierwalze teilweise umschlingen;
2. b. einen Übergabebereich zu dem die Faserstoffbahn auf dem inneren, Entwässerungsband liegend transportiert wird und im Übergabebereich auf ein Band übergeben wird;
3. c. Entwässerungspresse mit einem Pressnip durch den das Band zusammen mit der Faserstoffbahn geführt ist und
4. d. ein, eine Struktur zur Strukturierung der Faserstoffbahn aufweisendes, Prägeband das ebenfalls durch den Pressnip geführt ist und auf das die Faserstoffbahn übergeben ist;
5. e. einem Transfernip durch den die Faserstoffbahn zusammen mit dem Prägeband geführt ist;
6. f. eine beheizte metallische Oberfläche, insbesondere die Oberfläche eines Trockenzylinders, auf die die Faserstoffbahn im Transfernip zur Trocknung übergeben wird; dadurch gekennzeichnet, dass
7. g. das Band in Schritt c) als ein wasseraufnehmendes Band, insbesondere als Pressfilz, ausgeführt ist;
8. h. der Übergabebereich durch ein , in der durch das wasseraufnehmende Band gebildeten Schlaufe liegenden Saugelement, insbesondere durch eine Saugwalze, gebildet ist, welche teilweise durch das innere Entwässerungsband und das wasseraufnehmende Band in einem gemeinsamen Umschlingungsbereich umschlungen ist;
9. i. der Pressnip in Schritt d) als Entwässerungsnip einer Entwässerungspresse ausgeführt ist;

The invention is also achieved by a machine for producing a structured fibrous web, in particular a structured tissue web. It includes:

1. a. a forming area for forming the fibrous web from a fibrous suspension, the fibrous suspension being introduced through a headbox between an outer dewatering belt and an inner dewatering belt and the outer dewatering belt and the inner dewatering belt partially looping around a forming roll;
2. b. a transfer area to which the fibrous web is transported lying on the inner, dewatering belt and is transferred to a belt in the transfer area;
3. c. Dewatering press with a press nip through which the belt is guided together with the fibrous web and
4. d. an embossing belt which has a structure for structuring the fibrous web and which is also passed through the press nip and onto which the fibrous web is transferred;
5. e. a transfer nip through which the fibrous web is guided together with the embossing belt;
6. f. a heated metallic surface, in particular the surface of a drying cylinder, to which the fibrous web is transferred in the transfer nip for drying; characterized in that
7. G. the band in step c) is designed as a water-absorbing band, in particular as a press felt;
8. H. the transfer area is formed by a suction element located in the loop formed by the water-absorbing band, in particular by a suction roll, which is partially wrapped in a common looping area by the inner dewatering band and the water-absorbing band;
9. i. the press nip in step d) is designed as a dewatering nip of a dewatering press;

The inner dewatering belt is advantageously designed to structure the fibrous web.

The construction of the machine enables a short distance between the embossing nip of the dewatering press and the transfer nip. For good runability, it is possible to choose the distance between the end of the embossing nip and the start of the transfer nip to be less than 8 m, in particular less than 7 m, preferably less than 6 m.

The invention also expressly extends to those embodiments which are not given by combinations of features from explicit references back to the claims, with which the disclosed features of the invention - as far as this is technically sensible - can be combined with one another as desired.

Further features and advantages of the invention emerge from the following description of preferred exemplary embodiments with reference to the drawing.

The single figure shows a possible embodiment of a machine according to the invention 23 for the production of a structured tissue web 21 in a schematic representation.

The tissue web 21 is made from a pulp suspension that passes through a headbox 1 between an outer drainage tape 2 and an inner drainage band 3 is introduced in a forming area 22nd formed. This wraps around the outer drainage band 2 and the inner drainage band 3 partly a forming roll 4th . The outer drainage tape 2 and the inner drainage band 3 and also the other coverings 9 , 15th are around guide rollers 5 guided and thereby form a respective loop. After the forming area 22nd becomes the outer drainage band 2 from the fibrous web 21 and the inner drainage band 3 led away. The fibrous web 21 will be on the inner drainage belt 3 lying to a transfer area 8th transported. The outer drainage tape 2 is as a woven dewatering screen and the inner dewatering tape 3 as a woven structured dewatering screen for structuring the tissue web 21 executed. Both drainage belts 2 , 3 are made permeable to water. In the transfer area 8th becomes the tissue web 21 from the inner drainage band 3 on a tape 9 , which in this example is designed as a water-absorbing tape, in particular as a press felt, transferred. The transfer area 8th is thereby through a, in which through the water-absorbing tape 9 formed loop lying as a suction roll 6th executed suction element 6th formed, which partly by the inner drainage band 3 and the water absorbent tape 9 is wrapped in a common wrapping area. The suction roll 6th has a suction zone 7th on, which extends over a length in the circumferential direction of the suction roll 6th extends, which is larger than the common wraparound area. The length of the common looping area in the circumferential direction of the suction roll 6th in this example is more than 280 mm. The inner drainage band is at the end of the common looping area 3 from the tissue web 21 and the water absorbent tape 9 before the End of the suction zone 7th from the suction roll 6th led away. Then the tape 9 together with the tissue web 21 still in a further wrapping area around the suction roll 6th led around and finally to and through a press nip 16 a dewatering press 10 and there to a likewise through the press nip 16 guided, a structure for structuring tissue web 21 exhibiting embossing tape 15th hand over. The tissue web 21 is in the press nip 16 , which also has an embossed nip 16 represents, drained and for the second time through the structure of the embossing belt 15th structured. The structure of the embossing belt 15th is coarser than the structure of the internal drainage belt 3 . This type of structuring by superimposing two different structures can improve the quality of the tissue web 21 in terms of specific volume and water absorption behavior can be achieved with good formation at the same time. Then the tissue web 21 together with the embossing tape 15th through a transfer nip 18th going through a transfer roller 17th and a Yankee top hat 19th is formed, for the transfer of the tissue web 21 for further drying on a Yankee cylinder 19th especially a Yankee top hat 19th made of steel with a heated metallic surface. The tissue web 21 becomes at the end of the wrap around the Yankee cylinder 19th through a scraper 20th removed and, if necessary, creped. The water-absorbing tape 9 will be in the transfer area 8th in direct contact with a suction zone 7th having suction roll 6th guided. Through the one in the suction zone 7th The negative pressure applied is that in the water-absorbing tape 9 contained water and some of the in the tissue web 21 contained water sucked off and removed. This will make the water absorbent tape 9 conditioned and the dryness of the tissue web 21 already increased before the embossing nip. As a result, the water-absorbent tape 9 in the press nip of the dewatering press 10 absorb the resulting water completely. This results in a higher dry content of the tissue web 21 before the transfer nip 18th and before handing over to the Yankee top hat 19th achieved. Since mechanical dewatering is more energetic than thermal drying using the Yankee cylinder, it can save energy. The higher dry content of the tissue web 21 before the embossing nip 16 On the one hand, it also favors the embossing behavior and, on the other hand, it increases the resilience of the tissue web 21 higher and therefore better. The press nip 16 is designed as an extended press nip. The press nip 16 serves not only for drainage, but also represents the embossing nip. Due to the long dwell time in the extended press nip 16 a good structure and at the same time a gentle, sufficient drainage can be guaranteed. The extended press nip of the dewatering press 10 is through a shoe roller 11th and a counter roll 13th , which is designed in particular as a suction press roll formed. The counter roll 13th is within the by the water-absorbing tape 9 formed loop arranged and the shoe roller 11th is within the by the embossing belt 15th formed loop arranged. The shoe roller 11th includes a press shoe 12th and a press jacket. The press jacket preferably has grooves on its outer surface. These allow air to flow in during pressing in the press nip 16 especially if the counter element is designed as a suction press roll.

The embossing tape 15th is designed as a monolithic membrane or as a perforated, multi-layer laminated film. These have openings or bores that have been mechanically, for example punched, drilled or generated with laser beams or water jets. The structuring elements are the openings or bores into which areas of the fibrous web are pressed during the structuring process. The land areas between the openings or bores are impermeable. This causes a higher dewatering especially in cooperation with the negative pressure acting in the suction press roll, with constant line force of the shoe roll. The tissue web 21 is pressed in the extended press nip with a line force of less than 300 kN / m.

The structure of the machine 23 allows a short distance between the embossing nip 16 the dewatering press 10 and the Transferip 18th . For good runability, the distance between the end of the embossing lip is 16 and the beginning of the transfer nip 18th less than 8 m.

List of reference symbols

1

Headbox

2

outer drainage tape

3

Inner drainage tape

4th

Forming roll

5

Guide roller

6th

Suction element, suction roll

7th

Suction zone

8th

Transfer area

9

water-absorbing tape

10

Dewatering press

11th

Shoe roller

12th

Press shoe

13th

Counter roll

14th

Suction area

15th

Embossing tape

16

Embossing nip, press nip

17th

Transfer roller

18th

Transferip

19th

Yankee top hat

20th

scraper

21

Fibrous web

22nd

Forming area

23

machine

QUOTES INCLUDED IN THE DESCRIPTION

This list of the documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• WO 2013/009256 A1 [0003]

Claims (15)

A method for producing a structured fibrous web (21), in particular a structured tissue web (21), comprising the following steps: a. Forming the fibrous web (21) from a fibrous suspension, the fibrous suspension being introduced through a headbox (1) between an outer dewatering belt (2) and an inner dewatering belt (3) and the outer dewatering belt (2) and the inner dewatering belt (3) one Wrap around the forming roll (4) partially; b. Transporting the fibrous web (21) lying on the inner, dewatering belt (3) to a transfer area (8); c. Transferring the fibrous web (21) in the transfer area (8) to a belt (9); d. Guiding the belt (9) together with the fibrous web (21) through a press nip (16); e. Transferring the fibrous web (21) to an embossing belt (15) which is likewise guided through the press nip (16) and has a structure for structuring the fibrous web (21); f. guiding the fibrous web (21) together with the embossing belt (15) through a transfer nip (18) for transferring the fibrous web (21) for drying to a heated metallic surface, in particular to the surface of a drying cylinder (19); characterized in that g. the belt (9) in step c) is designed as a water-absorbing belt (9), in particular as a press felt; H. the transfer area (8) is formed by a suction element (6), in particular a suction roll (6), located in the loop formed by the water-absorbing belt (9), which is partially formed by the inner drainage belt (3) and the water-absorbing belt (9 ) is wrapped in a common wrapping area; i. the press nip (16) in step d) is designed as a dewatering nip of a dewatering press (10); Procedure according to Claim 1 , characterized in that the inner dewatering belt (3), for structuring the fibrous web (21), is structured. Procedure according to Claim 2 , characterized in that the inner drainage belt (3) is designed as a woven structured belt or as embossing felt or as a monolithic membrane with openings or bores or as a perforated, multi-layer laminated film for structuring the fibrous web (21). Procedure according to Claim 2 or 3 , characterized in that the structure of the inner drainage belt (3) is made finer than the structure of the embossing belt (15). Method according to one of the preceding claims, characterized in that the common looping area is designed with a length in the circumferential direction of the suction element (6) or the suction roller (6) of more than 80 mm, in particular more than 150 mm, preferably more than 280 mm Procedure according to Claim 2 , characterized in that in the common looping area from the inside of the loop formed by the inner drainage belt (3) steam or hot, dry or moist air is supplied. Method according to one of the preceding claims, characterized in that the press nip (16) is designed as an elongated press nip (16). Procedure according to Claim 7 , characterized in that the elongated press nip (16) is formed by a shoe roll (11) and a counter roll (13), which is designed in particular as a suction press roll. Procedure according to Claim 8 , characterized in that the counter roller (13) is arranged within the loop formed by the water-absorbing belt (9) and the shoe roller (11) is arranged within the loop formed by the embossing belt (15) and the shoe roller (11) has a press shoe ( 12) and a press jacket and preferably the press jacket has grooves on its outer surface. Method according to one of the preceding Claims 7 until 9 , characterized in that the fibrous web (21) in the extended press nip (16) with a line force of less than 300 kN / m, in particular less than 200 kN / m, preferably in the range between 100 kN / m to 300 kN / m is pressed. Method according to one of the preceding claims, characterized in that the embossing belt (15) is made permeable. Method according to one of the preceding claims, characterized in that a tape made from a perforated monolithic membrane is used as the embossing tape (15) or a tape made from a perforated, multi-layer laminated film is used or a structured, woven screen is used as the embossing tape (15) will. Method according to one of the preceding claims, characterized in that the transfer nip (18) is formed by a transfer roller lying in the loop formed by the embossing belt (15) (17) and the heated metallic surface is formed and the transfer roller (17) is designed with an externally grooved jacket surface. Machine for producing a structured fibrous web (21), in particular a structured tissue web, comprising: a. a forming area (22) for forming the fibrous web (21) from a fibrous suspension, the fibrous suspension being introduced through a headbox (1) between an outer dewatering belt (2) and an inner dewatering belt (3) and the outer dewatering belt (2) and the inner dewatering belt (3) partially loop around a forming roller (4) b. a transfer area (8) to which the fibrous web (21) is transported lying on the inner, dewatering belt (3) and is transferred to a belt (9) in the transfer area; c. a dewatering press (10) with a press nip (16) through which the belt (9) is guided together with the fibrous web (21) and d. an embossing belt (15) which has a structure for structuring the fibrous web (21) and which is also passed through the press nip (16) and onto which the fibrous web (21) is transferred; e. a transfer nip (18) through which the fibrous web (21) is guided together with the embossing belt (15); f. a heated metallic surface, in particular the surface of a drying cylinder (19), to which the fibrous web (21) in the transfer nip (18) is transferred for drying; characterized in that g. the belt (9) in step c) is designed as a water-absorbing belt, in particular as a press felt; H. the transfer area (8) is formed by a suction element (6), in particular a suction roll (6), located in the loop formed by the water-absorbing belt (9), which is partially formed by the inner drainage belt (3) and the water-absorbing belt (9 ) is wrapped in a common wrapping area; i. the press nip (16) in step d) is designed as a dewatering nip of a dewatering press (10); Machine after Claim 14 , characterized in that the inner dewatering belt (3), for structuring the fibrous web (21), is structured.

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