EP1052328A2 - Gravure paper and a method for its production - Google Patents

Abstract

In the prodn. of paper for gravure printing, with a max. roughness depth of 1.4 mu m, a fiber suspension is prepared with a Canadian Standard Freeness (CSF) rating of ≥ 50 ml CSF and pref. 50-120 ml CSF. The suspension is converted into a paper web the web formation stage of a papermaking machine, followed by a water extraction press station and a drying stage. A slurry is applied to the unfinished paper web, containing pigments and/or filling materials, between the start of web formation and a dry content of the paper of ≤ 90%. The slurry has a fiber content of 2-60% and pref. 5-30%. The paper requires no further coating The web passes through a press station after the slurry application, which is on both sides of the web. At least one slurry coating is applied at the web formation stage and/or at the press station. At least one slurry coating is applied to the paper w with a dry content of ≤ 55% and pref. 3-55%. The slurry coating is applied to the web through a screen in a dry mass weight f at least one coating on one side of the web of 0.5-10.0 g/m<2> and pref. 1.0-10.0 g/m<2>. The slurry containing pigments and/or filling materials is prepared with a fiber content of pref. 10-95% and especially 20-60%. The fiber web (4.1) is formed from the stock inlet (1) with at least two and pref. three layers. One layer, and pref. the two outer layers (4.2,4.3) ar wholly of the pigment/filling material slurry and at least one layer (4.1) and pref. the center layer is of the paper fiber pulp The web is passed through a web formation stage, a press station and a drying section, without further surface coating. The slur contains kaolin, clay, ground CaCO3, precipitated CaCO3, TiO2, talcum and bentonite. It also contains a retention agent, fixing agents, dispersion agents, adhesive glue agents, bonding agents and a fine matter suspension. The pigment/filling material slurry has a fiber content with a rating of ≤ 30 ml CSF and pref. ≤ 20 ml CSF. The fiber content the outer pigment/filling material layers is 50-100% less than the fiber content of the center layer.

Description

Parker Print Surf" - Methode nach DIN-ISO 8791-4). Weiterhin betrifft die Erfindung ein Tiefdruck-Papier, welches in einem einzigen Arbeitsgang hergestellt wird.The invention relates to a manufacturing method for a gravure printing paper with a maximum roughness of 1.40 µm (measured with the

P arker P rint S urf "method according to DIN-ISO 8791-4). Furthermore, the invention relates to a gravure printing paper which is produced in a single operation.

The prior art is different Known printing process, which different claims the quality and properties of the print Paper to ensure optimal print quality to reach. It is special with the gravure printing process essential that the surface of the paper used a high smoothness or very low roughness has, so that a sufficient print quality is achieved becomes. Furthermore, the porosity must be low in order to to ensure optimal ink absorption. For the best print quality To achieve this, the sheet must also have a calendering have some compressibility. In addition to the minor However, a high tensile strength is also required, thus tearing off the paper web during the printing process is avoided.

To achieve a very high surface quality, i.e. one shallow roughness of the paper, the filler content or pigment content of the fiber suspension kept as high as possible because these very fine fabrics produce a very smooth and homogeneous surface for the paper. In addition, a fibrous material is used, which if possible has a high degree of grinding due to the high proportion Fine material to create a homogeneous leaf structure. Uniformity and unity of the paper surface are of paramount importance.

However, these demands are subject to high demands Strength of the paper. To achieve a high Tear resistance is not too high a feel factor desirable because the filler acts as a blocker Hydrogen bridging between the fibers of the paper. In addition, the strengths suffer with a high grinding degree due to the fiber shortening effect

To avoid these conflicting interests rotogravure paper is currently manufactured in part by the fact that Coating base paper is produced as a highly tear-resistant paper and then the paper surface with pigment and filler is coated to ensure sufficient surface quality receive. But this requires a high one Capital expenditure, because in addition to that, for manufacturing of the paper necessary paper machine, even in one Coating machine, the on-line or off-line for Papermaking process works, must be invested.

If you follow the other option, the grind of the paper to keep as high as possible, i.e. in the range of less than 40 ml CSF, and with a relatively high total filler content too work, this means a strong grinding of the Fiber. However, this is very energy intensive because the expended energy exponentially with increasing degree of grinding increases.

The freeness of pulp is often considered the Canadian standard Freeness (CSF) (see TAPI 227) in milliliters. This corresponds to a high degree of grinding, that is, a high degree Fineness of the fiber or a high one Drainage resistance, while a low CSF value a low grind a high CSF value respectively corresponds to a low drainage resistance.

From the published patent application DE 196 24 127 A1 by the applicant is a method of making a paper web, using a multi-layer headbox known. With this Process for producing a multi-layer fiber web become several by means of a headbox Fiber suspension streams of a web forming device fed, forming a three-layer Fibrous web both outer layers by two Fiber suspension streams are generated, their composition is chosen so that the outer layer is then is easier to drain than the inner layer through a correspondingly different composition Fiber suspension stream is generated. A specific indication of the The composition of the individual fiber suspension streams is shown in not mentioned in this document.

Furthermore, it is from the international registration PCT / US97 / 01975 known on the surface of a still wet Fiber web, in the area of the wet end of a paper machine, apply uncooked starch to the surface of the To improve paper. An indication of making one Gravure paper is not specified.

It is an object of the invention to provide a manufacturing method for Specify rotogravure papers, which is characterized by a much cheaper energy and fiber use distinguished and a lower investment requirement than in Commonly known in the art. It is also a task the invention to describe a gravure paper that by its manufacturing process is cheaper to produce as known in the art.

These tasks are characterized by the characteristics of each independent claims solved.

The inventors have recognized that it is possible to produce a rotogravure paper using a fiber with a low freeness with values greater than 50 ml CSF, preferably between 50 ml and 120 ml CSF, without a coating in on line "- or to have to use off line "operation, if it is possible to arrange the filler or pigment content of the finished paper web for the most part in the immediate vicinity of the finished paper web, on the one hand increasing the tear strength of the gravure paper produced and on the other hand the maximum surface roughness of the It is important that the dry content of the fibrous web to which the filler and / or the pigment is applied is ≤90%, preferably 3% to 55%, preferably 5 % to 20%, since this is the only way to ensure that the filler or pigment binds well to the fiber web.

A high total filler content results in constant Basis weight a smaller relative proportion of strength-producing fiber content. That’s it necessary higher quality and therefore more expensive fiber content to use. Through the invention of targeted application of pigments on the surface of the paper Disadvantage avoided. It can therefore be used without loss of quality less expensive fibers are used.

• Erzeugung einer Stoffsuspension mit einem Stoff mit einer Freeness (=Maß für den Mahlgrad) von größer/gleich 50 ml CSF (=Canadian Standard Freeness), vorzugsweise 50 ml bis 120 ml CSF, vorzugsweise 50 ml bis 80 ml CSF,
• Bildung einer Faserbahn mit dieser Stoffsuspension mit Hilfe eines Blattbildungssystems, einer ersten Pressenpartie und einer Trockenpartie,
• Auftragung mindestens einer Pigment- und/oder Füllstoffslurry auf die unfertige Faserbahn im Bereich zwischen dem Beginn der Blattbildung und einem Trockengehalt der Faserbahn von ≤90%, vorzugsweise zwischen 3% und 50%, wobei der Faserstoffanteil im Pigment- und/oder Füllstoffslurry vorzugsweise im Bereich 2% bis 60%, vorzugsweise 5% bis 30%, beträgt, und
• Verzicht auf ein nachträgliches Streichen der Papierbahn.

According to the concept of the invention, the process for producing gravure printing paper with a maximum roughness depth of 1.40 μm is improved in that it contains the following process steps:

• Generation of a substance suspension with a substance with a freeness (= measure for the degree of grinding) of 50 ml CSF (= Canadian Standard Freeness), preferably 50 ml to 120 ml CSF, preferably 50 ml to 80 ml CSF,
• Formation of a fibrous web with this stock suspension using a sheet formation system, a first press section and a dryer section,
• Application of at least one pigment and / or filler slurry to the unfinished fiber web in the range between the beginning of sheet formation and a dry content of the fiber web of ≤90%, preferably between 3% and 50%, the fiber content in the pigment and / or filler slurry preferably in Range is 2% to 60%, preferably 5% to 30%, and
• No subsequent coating of the paper web.

This advantageously ensures that the Filler content essentially in that for printing important near the surface respectively concentrated surface-forming layers while in the There is a low filler content in the middle of the sheet which is suitable for alone for good tear resistance of the paper ensures, in addition by reducing the degree of grinding compared to the prior art to a freeness of greater 50 ml CSF additionally for an increase in the tensile strength of the Paper is taken care of. This also leads to the web better running properties through the paper machine and later also received by a printing press.

An advantageous embodiment of the manufacturing process provides that subsequent to the at least one order the pigment and / or filler slurry a press run takes place. This press run ensures that the binding of the pigment and / or filler layer with the Fiber web is increased.

According to the invention, the manufacturing process can both one, as well as both sides of the fiber web are applied, so that the pigment and / or filler slurry also on both Sides of the fibrous web can be applied.

Possible places for applying the pigment or / and Filler slurry can layer the sheet formation system Paper machine or the press section.

Due to the composition of the pigment and / or Filler slurry is also possible through this Apply sieve through to the fiber web. This will advantageously achieved that the order at one time the paper web to which the Tear strength of the paper web itself is not yet sufficient to to loosen them from the sieve. Even if this were possible the application process is stressful on the fiber structure impact and the later tear strength of the paper web affect. The application of pigment and / or Filler slurry can also be relative to one in itself tear-resistant paper web through a sieve to the Probability of a possible web break in the Reduce manufacturing process and thus the effective Increase the running time of the paper machine.

Advantageous values for the total application weight of the at least one application of the pigment and / or filler slurry on each side of the paper web is a dry matter of 0.5 to 10.0 g / m ² , preferably 1.0 to 10 g / m ² .

According to the invention, the manufacturing process is limited not just on the order of a filler and / or Pigment slurry on an existing fiber web, but it can according to the invention also the rotogravure paper with a maximum surface roughness of 1.40 µm be by using a stock suspension with a pulp a freeness (= measure of the freeness) of 50 or more ml CSF (= Canadian Standard Freeness), preferably 50 ml to 120 ml of CSF, preferably 50 ml to 80 ml of CSF, is generated, at the same time a filler and / or pigment suspension produced, with the fiber / fines content in the Pigment and / or filler suspension, preferably in the range 10% to 95%, preferably 30% to 60%. Subsequently is using a fiber web with the help of a headbox at least two, preferably at least three layers, formed, one layer, preferably the two outer Layers with the filler and / or pigment suspension is / are loaded and at least one shift, preferably the inner layer designated with Stock suspension is loaded. Then follows the Forming a paper web with the help of a Sheet formation system, a press section and one Drying section, with a subsequent painting of the Paper web is dispensed with.

This method according to the invention also achieves that in the outer layer to be printed, or in the two outer layers, a very high filler and / or Pigment content is present, while in a fibrous Layer, or in the inner layer, fibers with a relatively low freeness corresponding to greater than 50 ml CSF, preferably in the range from 50 ml to 100 ml CSF, are present, so that here a very good tensile strength Paper web is guaranteed.

Examples of pigments or fillers that can be used are: kaolin, clay, ground CaCO ₃ , PCC (= precipitated CaCO ₃ ), TiO ₂ , talc, bentonite.

In addition to these fillers or pigments at least one of the following substances is added: Retention aids, dispersants, fixatives, Sizing agents, binders and starch. In addition, too Fine material suspension can be used.

• Erzeugung einer Stoffsuspension mit einer Freeness (=Maß für den Mahlgrad) von größer/gleich 50 CSF ml (=Canadian Standard Freeness), vorzugsweise 50 ml bis 120 ml CSF, vorzugsweise 50 ml bis 80 ml CSF,
• Bildung einer Faserbahn mit dieser Stoffsuspension mit Hilfe eines Blattbildungssystems, einer ersten Pressenpartie und einer Trockenpartie,
• Auftragung einer Pigment- und/oder Füllstoffslurry auf die unfertige Faserbahn im Bereich zwischen dem Beginn der Blattbildung und einem Trockengehalt der Faserbahn von ≤90%, vorzugsweise zwischen 5% und 20%, auf mindestens einer Bahnseite, wobei der Faserstoffanteil im Pigment- und/oder Füllstoffslurry vorzugsweise im Bereich von 2% bis 60%, vorzugsweise 5% bis 30% beträgt, und
• Verzicht auf ein nachträgliches Streichen der Papierbahn.

In accordance with their inventive concept, the inventors furthermore propose a gravure printing paper with a surface roughness of 1.40 μm, which is characterized by the following production process:

• Generation of a stock suspension with a freeness (= measure of the freeness) of greater than or equal to 50 CSF ml (= Canadian Standard Freeness), preferably 50 ml to 120 ml CSF, preferably 50 ml to 80 ml CSF,
• Formation of a fibrous web with this stock suspension using a sheet formation system, a first press section and a dryer section,
• Application of a pigment and / or filler slurry to the unfinished fiber web in the area between the beginning of sheet formation and a dry content of the fiber web of ≤90%, preferably between 5% and 20%, on at least one side of the web, the fiber content in the pigment and / or filler slurry is preferably in the range from 2% to 60%, preferably 5% to 30%, and
• No subsequent coating of the paper web.

A rotogravure paper produced in this way fulfills on the one hand the requirement for very good printability due to the high filler content in at least one outer or in both outer layers, and on the other hand a very closed, homogeneous and flat surface. Furthermore, the running property of such is advantageous Intaglio paper significantly improved, while at the same time due to the low degree of grinding required, a considerable one Energy savings in the manufacture of the fabric used and thus the stock suspension is realized. Especially rotogravure paper has a good property, though following the application of the pigment and / or Filler slurry on the unfinished web a press run takes place, as a result of which a high binding of the pigment and / or Filler layer on the fiber web is reached.

According to the invention, the rotogravure paper can be produced by applying the pigment and / or filler slurry in the Sheet forming system of the paper machine or in the Press section of the paper machine takes place. Besides, can the application of pigment and / or filler slurry also through through a sieve onto the not yet finished fiber web respectively.

The total application weight of the pigment and / or filler slurry on one side is advantageously from 0.5 to 10.0 g / m ² , preferably 1.0 to 10 g / m ² , dry matter.

• Erzeugung einer Stoffsuspension mit einem Stoff mit einer Freeness (=Maß für den Mahlgrad) von größer/gleich 50 CSF ml (=Canadian Standard Freeness), vorzugsweise 50 ml bis 120 CSF ml, vorzugsweise 50 ml bis 80 ml CSF,
• Erzeugung einer Füllstoff- und/oder Pigmentsuspension wobei der Faserstoff/Feinstoff-Anteil im Pigment- und/oder Füllstoffsuspension vorzugsweise im Bereich 2% bis 60%, vorzugsweise 5% bis 30%, beträgt,
• Bildung einer Faserbahn mit Hilfe eines Stoffauflaufes mit mindestens zwei, vorzugsweise mindestens drei Schichten, wobei eine Schicht, vorzugsweise die beiden äußeren Schichten, mit der Pigmentsuspension beschickt wird/werden und mindestens eine Schicht, vorzugsweise die innere Schicht mit der bezeichneten Stoffsuspension beschickt wird,
• anschließend Bildung einer Papierbahn mit Hilfe eines Blattbildungssystems, einer Pressenpartie und einer Trockenpartie,
• wobei auf ein nachträgliches Streichen der Papierbahn verzichtet wird.

According to the invention, a gravure printing paper with a maximum surface roughness of 1.40 μm is also proposed, which was produced with the following production method:

• Generation of a stock suspension with a stock with a freeness (= measure of the freeness) of 50 CSF ml (= Canadian Standard Freeness), preferably 50 ml to 120 CSF ml, preferably 50 ml to 80 ml CSF,
• Generation of a filler and / or pigment suspension, the fiber / fines content in the pigment and / or filler suspension preferably being in the range 2% to 60%, preferably 5% to 30%,
• Forming a fibrous web with the aid of a headbox with at least two, preferably at least three layers, wherein one layer, preferably the two outer layers, is / are loaded with the pigment suspension and at least one layer, preferably the inner layer, is loaded with the specified substance suspension,
• then forming a paper web with the help of a sheet formation system, a press section and a dryer section,
• a subsequent coating of the paper web is dispensed with.

The advantage of a gravure paper produced in this way is essentially in the extremely cheaper Energy requirement in the manufacture of the stock suspension, one excellent printability of the paper surface due to of their high sensory content. Because on the investment one additional coating machine can be dispensed with it is a very inexpensive manufacturing option.

Both in the latter and in the aforementioned gravure printing paper, at least one of the following substances can be used as pigment or filler: kaolin, clay, ground CaCO ₃ , PCC, TiO ₂ , talc or bentonite. In addition, chemical auxiliaries, in particular binders, can also be added in order to further improve the paper surface produced. A suspension containing fine substances can also be added to increase the binding forces.

It is understood that the above and Features of the invention not yet to be explained below only in the specified combination, but also in other combinations or used alone, without leaving the scope of the invention.

Additional features and advantages of the invention result more preferred from the following description Embodiments with reference to the drawings.

Figur 1:

Dreischichtstoffauflauf;

Figur 2:

Verlauf des relativen Füllstoffanteils;

Figur 2a:

Verlauf des relativen Füllstoffanteils und der Faserstoffanteile;

Figur 3:

Papiermaschine mit Fühlstoff- und Pigmentapplikatoren.

The invention will be explained in more detail below with reference to the drawings. They represent:

Figure 1:

Three-layer headbox;

Figure 2:

Course of the relative proportion of filler;

Figure 2a:

Course of the relative filler fraction and the fiber fraction;

Figure 3:

Paper machine with feeler and pigment applicators.

Figure 1 illustrates the inventive Manufacturing process with a three-layer headbox 1 and a subsequent twin wire former. The headbox 1 has three feeds 1.1 to 1.3, the middle one Feed 1.1 is loaded with a stock suspension that is produced according to the invention with a substance that Freeness greater than or equal to 50 ml CSF.

On the outside there are two additional inlets 1.2 and 1.3 represented by one, essentially with filler loaded suspension on the outside of the emerging Suspension position between the two screens 2.1 and 2.2 is initiated, is laid. The screens 2.1 and 2.2 will be merged over two rollers 3.1 and 3.2. Subsequently finds a drainage through the headbox 1 formed three-layer fabric suspension layer by the sieves 2.1 and 2.2 running in sandwich form instead. The Drainage is schematic by the two arrows 5.1 and 5.2 represents. In this way an inner is formed Fiber layer 4.1 through the stock suspension with a Freeness greater than 50 ml CSF is generated. The inner one Fiber layer 4.1 is on its two outer sides by surround a filler layer 4.2 and 4.3, which on the Surface for a very smooth structure, as with Rotogravure paper is necessary.

Figure 2 shows the course of the relative proportion of filler 6 in a coordinate system in which the ordinate of the relative filler and the abscissa Z direction of the paper is shown. The two Edge arrows represent the surfaces of the top (left) and the underside (right) of the finished paper represents.

It can be seen here that the filler fraction 6 on the Top and bottom of the paper a maximum reached while in the middle area of the paper there is a relatively low proportion of filler. Accordingly, in this area, the proportion of the fiber is high and has According to the invention, a freeness greater than 50 freeness ml of CSF. Due to the high filler content in the Outer layers of the paper will be the optimal printability of the paper for the rotogravure process, although only achieved a reduced degree of grinding of the fabric of the inner Paper layer is present. It also turns out to be positive Side effect also an improved running property of the Paper.

Another possible course of relative fiber and The proportion of filler is shown in FIG. 2a. Here shows curve 6 shows the relative proportion of filler over the z direction of the paper, curve 6.1 the course of the relative Fiber content from a fabric with 50 to 120 ml CSF and curve 6.2 the course of the relative fiber content from a fabric with <30 ml CSF. It can be seen that here almost exclusively filler and Fibers with <30 ml CSF are present while in the inner Layer little filler and mainly Fiber content from a fabric with 50 to 120 ml CSF are located.

Another manufacturing process for the invention Gravure printing paper is shown in FIG. 3. Figure 3 shows a paper machine with a sheet formation system 7, consisting of a twin wire former which is replaced by a single-layer headbox 1 supplied with stock suspension becomes. This is followed by a press section 8 with two Shoe presses 8.1 and 8.2. Behind it is a single row Drying section 9 arranged to which a calender 10 connects. From there, the finished paper will eventually be led to winding 11. The arrows 12 to 20 show possible positions for applicators Application of pigment or filler.

A first position for an applicator, i.e. a first one Place of application is shown by arrow 12. This The place of application is in the area of the transition from Sheet formation system for the press section, that is in one Area where the top wire is already off the fiber web is removed and the fiber web only by a lower Sieve of the sheet formation system is trimmed. Further, positions 12A to 12C are advantageous places of application in the twin-wire former shown, here also by the Sieves is applied.

Subsequent to this application site 12 is the lower sieve detached and the fiber web from the first upper sieve of the Press section taken, with this free Section of the second side of the fibrous web is another favorable location 13 is located. Because the fibrous web following the application of the pigment or Filler layer passes through the press 8.1, these become new applied layers best with the fiber web "welded".

Two other possible locations for sieving are given right in front of the second shoe press 8.2. These locations are indicated by arrows 14 and 15. Here can advantageously pigment and / or filler through the sieve be applied, because in this area the fiber web sandwiched by two sieves.

In the following dryer section 9 there are three more possible application locations 16, 17 and 19 indicated. On this Application locations, each formed by a deflecting roller there is also the possibility of a direct Orders on the fiber web in the drying process, where in the embodiment of the dryer section shown as single-tier dryer section only one side of the fiber web is so easily accessible. However, there is also the job opportunities for Pigmet and Filler, on each of which the upper band from the to drying paper web is lifted off. Unfortunately, here somewhat cramped space for application on the opposite side of the fiber web. Such Application locations are exemplified by arrows 18 and 19 specified.

Becomes a double-tier dryer section instead of the single-tier dryer used, so there are favorable conditions for one same order on both sides of the paper.

Important when applying the pigment and / or Filler layer on the resulting fibrous web is that the Drying content of the fibrous web is not yet 90% has exceeded, since with a drying content of higher than 90% an insufficiently strong connection with the Fiber web is reached. A drying content is preferred from 3% to 55%.

Overall, this manufacturing process for An intaglio paper achieves that one is essential more favorable energy yield results because a substance suspension is used with a low grinding degree. In contrast to one specific energy expenditure for a high quality TMP material (TMP = Thermomechanical Pulp) from 2800 - 3200 kWh / t and about that, when applying the here described Process less than 2800 kWh / t needed. Furthermore can a subsequent painting can be dispensed with, whereby considerable investment savings - by doing without a coating system - are possible. Consequently, it stands out also the rotogravure paper, which by one of the method is produced by extremely favorable manufacturing costs.

An additional, essential advantage is that the Filler enrichment of the outer leaf layers for Homogenization of the leaf structure and thus to one equalizing effect. This also makes a very good fiber coverage achieved.

Reference list

1

Headbox

1.1

Feeder for fiber

1.2 + 1.3

Feeder for filler / pigment

2.1 and 2.2

scree

3.1 and 3.2

roller

4.1

Fiber layer

4.2 and 4.3

Filler layer

5.1 and 5.2

drainage

6

Course of the relative proportion of filler

7

Sheet formation system

8th

Press section

8.1 and 8.2

Shoe press

9

Dryer section

10th

calender

11

Winding up

12 to 20

Application locations / positions for applicators

Claims (24)

Production process for a gravure printing paper with a maximum roughness depth of 1.40 µm with the following process steps: 1.1 Generation of a stock suspension with a stock with a freeness (= measure of the freeness) of 50 ml CSF (= Canadian Standard Freeness), preferably 50 to 120 ml CSF, preferably 50 to 80 ml CSF, 1.2 formation of a fibrous web with this stock suspension using a sheet formation system (7), a first press section (8) and a dryer section (9), 1.3 application of at least one pigment and / or filler slurry to the unfinished fiber web in the range between the start of sheet formation and a dry content of the fiber web of ≤90%, the fiber content in the pigment and / or filler slurry preferably in the range 20% to 60%, preferably 5% to 30%, and 1.4 No subsequent coating of the paper web. Manufacturing process according to the preceding claim 1, characterized in that a press run takes place after the at least one application of the pigment and / or filler slurry. Production process according to one of the preceding claims 1 to 2, characterized in that the pigment and / or filler slurry is applied to both sides of the fiber web. Manufacturing process according to one of the preceding claims 1 to 3, characterized in that the at least one application of the pigment and / or filler slurry takes place in the sheet formation system (7) of the paper machine. Manufacturing process according to one of the preceding claims 1 to 4, characterized in that the at least one application of the pigment and / or filler slurry takes place in the press section (8) of the paper machine. Production process according to one of the preceding claims 1 to 5, characterized in that the at least one application of the pigment and / or filler slurry takes place at a dry content <55%, preferably 3% to 55%, of the paper web. Manufacturing process according to one of the preceding claims 1 to 6, characterized in that the at least one application of the pigment and / or filler slurry is carried out through a sieve on the fiber web. Production process according to one of the preceding claims 1 to 7, characterized in that the total application weight of the at least one application of the pigment and / or filler slurry has a dry matter on one side of 0.5 to 10.0 g / m ² , preferably 1.0 up to 10 g / m ² . Production process for a gravure printing paper with a maximum surface roughness of 1.40 µm with the following process steps: 9.1 Generation of a stock suspension with a stock with a freeness (= measure of the freeness) of greater than or equal to 50 ml CSF (= Canadian Standard Freeness), preferably 50 ml to 120 ml CSF, preferably 50 ml to 80 ml CSF, 9.2 Generation of a filler and / or pigment suspension, the fiber content in the pigment and / or filler suspension preferably being in the range 10% to 95%, preferably 20% to 60%, 9.3 formation of a fibrous web (4.1) with the aid of a headbox with at least two, preferably three layers, one layer, preferably the two outer layers (4.2, 4.3), being / being fed exclusively with the pigment suspension and at least one layer (4.1), preferably the inner layer is loaded with the designated material suspension, 9.4 subsequently forming a paper web with the aid of a sheet formation system (7), a press section (8) and a drying section (9), 9.5 whereby the paper web is not subsequently coated. Production process according to one of the preceding claims 1 to 9, characterized in that at least one of the following substances is used as pigment or filler: kaolin, clay, ground CaCO ₃ , PCC, TiO ₂ , talc, bentonite. Production process according to one of the preceding claims 1 to 10, characterized in that at least one of the following substances is added to the pigment or filler: retention aid, fixative, dispersant, sizing agent, binder, fine substance suspension. Gravure printing paper with a maximum surface roughness of 1.40 µm, characterized by the following manufacturing process: 12.1 Generation of a stock suspension with a stock with a freeness (= measure of the freeness) of greater than or equal to 50 ml CSF (= Canadian Standard Freeness), preferably 50 ml to 120 ml CSF ml, preferably 50 ml to 80 ml CSF, 12.2 formation of a fibrous web with this stock suspension using a sheet formation system (7), a first press section (8) and a dryer section (9), 12.3 Application of a pigment and / or filler slurry to the unfinished fiber web in the range between the beginning of sheet formation and a dry content of the fiber web of ≤90% on at least one side of the web, the fiber content in the pigment and / or filler slurry preferably in the range 2% to 60%, preferably 5% to 30%, and 12.4 No subsequent coating of the paper web. Gravure printing paper according to the preceding claim 12, characterized in that the pigment and / or filler slurry is applied to the unfinished fiber web on both sides. Gravure printing paper according to one of the preceding claims 12 to 13, characterized in that a press run takes place after at least one application of the pigment and / or filler slurry to the unfinished paper web. Gravure printing paper according to one of the preceding claims 12 to 14, characterized in that the pigment and / or filler slurry is applied to both sides of the fiber web. Intaglio printing paper according to one of the preceding claims 12 to 15, characterized in that at least one application of the pigment and / or filler slurry takes place in the sheet formation system (7) of the paper machine. Gravure paper according to one of the preceding claims 12 to 16, characterized in that at least one application of the pigment and / or filler slurry takes place in the press section (8) of the paper machine. Gravure paper according to one of the preceding claims 12 to 17, characterized in that at least one application of the pigment and / or filler slurry takes place at a dry content <55% of the paper web. Gravure printing paper according to one of the preceding claims 12 to 18, characterized in that at least one application of pigment and / or filler slurry is carried out through a screen onto the fiber web. Gravure printing paper according to one of the preceding claims 12 to 19, characterized in that the total application weight of the pigment and / or filler slurry has a dry matter on one side of 0.5 to 10.0 g / m ² , preferably 1.0 to 10 g / m ² . Gravure printing paper with a maximum surface roughness of 1.40 µm, characterized by the following manufacturing process: 21.1 Generation of a stock suspension with a stock with a freeness (= measure of the freeness) of greater than or equal to 50 ml CSF (= Canadian Standard Freeness), preferably 50 ml to 120 ml CSF, preferably 50 ml to 80 ml CSF, 21.2 Generation of a feeler and / or pigment suspension, the fiber content in the pigment and / or filler suspension preferably being in the range 2% to 60%, preferably 5% to 30%, 21.3 Forming a fibrous web with the aid of a headbox with at least two, preferably at least three, layers, one layer, preferably the two outer layers, being / are exclusively supplied with the pigment suspension and at least one layer, preferably the inner layer, being supplied with the specified substance suspension , 21.4 then forming a paper web with the help of a sheet formation system, a press section and a dryer section, 21.5 whereby the paper web is not subsequently coated. Gravure paper according to one of the preceding claims 12 to 20, characterized in that at least one of the following substances is used as the pigment or filler: kaolin, clay, ground CaCO ₃ , PCC, TiO ₂ , talc, bentomite. Manufacturing process and rotogravure paper according to one of the preceding claims 1-22, characterized in that the pigment and / or filler layer contains a fiber portion, the material of which has a freeness of ≤30 ml CSF, preferably ≤20 ml CSF . Manufacturing process and gravure printing paper according to the preceding claims 23, characterized in that the fiber content of the pigment and / or filler layer is 50% to 100% lower than the fiber content of the middle layer.

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