DE10228117A1 - Machine for treating a material web, preferably made of paper and cardboard, and possibly for producing the material web beforehand, with a contactless application device and a material web smoothing device - Google Patents

Abstract

It is proposed to provide at least one application device (20a-1) with at least one contactless application unit in combination with at least one material web smoothing device (40a-1) in a machine for producing and treating or treating a material web, preferably made of paper or cardboard which, on the one hand, applies the application of a liquid or pasty application medium to at least one side of the running material web (M) in a contactless manner and, on the other hand, a smoothing of the running material web (M) preceding and / or subsequent in an online process or in an offline process. Enable process.

Description

The invention relates to a machine for the production and treatment or for the treatment of a material web preferably of paper or cardboard, at least comprising: one Material web delivery device, which is designed for this, continuously Deliver material web; at least one along a material path application device arranged after the material web dispensing device for Applying liquid or pasty Application medium on at least one side of the running material web; a drying device arranged along the material path after the application device for drying the running material web to a drying state; one along the material path after the drying facility arranged device for processing or / and recording or / and Delivery of the material web, preferably a material web reeling device for rolling up the material web on a respective material web roll.

The invention therefore relates on the one hand on machines that manufacture and treat including order an application medium on at least one side of the material web in a so-called online operation enable. In such machines are conventionally used as application devices just touching Application devices (coating units) used.

The invention relates to another Machines used for treatment including application of an application medium on at least one side of the material web in a so-called Serve offline operation. Such machines are involved to one opposite a machine for producing the material web separate machine (Coating or application machine) that the material web to be treated is usually supplied in the form of web rolls. Inside such machines are used as application devices both touching Application devices (coating units) as well as contactless application devices (contactless coating units) used.

Touching application devices (Coating units) can be problematic to the extent that the performance (runnability) and mean operating times between business interruptions the touching Application or deletion could be impaired. So there is an increased risk for one Web break in the commissioning plant (coating plant), with the result that the entire production line comes to a standstill.

Compared to an online operation in Regarding the painting of the material web has an offline operation a lower volume efficiency.

For many applications will be a material quality with high smoothness and if necessary gloss desired. Around such a quality the material web can be reached online in a smoothing unit, If necessary, two-roll soft calender, machine-smooth or sharp machine-smooth be satined. There are also a variety of material qualities that traditionally after the production of the material web in a corresponding machine or after painting on a coating machine still in one further work needs to be satined offline. The satin takes essential Influence on the surface structure of the material, especially paper or cardboard, and thus both on the visual impression as well as on the printability. In front especially for painted Papers are a very important process. It brings after painting smoothness and possibly gloss.

After painting alone is usually insufficient smoothness or not achieved a sufficient gloss.

So much for painting in offline mode takes place, becomes conventional the satin in a separate offline process using a own, opposite the smoothing machine (e.g. super or calendering, or soft calender). by virtue of two to be carried out one after the other by means of a separate machine Offline processes result in a lower volume efficiency.

The object of the invention is a machine the type mentioned provide good performance or runnability and material with high smoothness and if necessary, can provide gloss with good volume efficiency.

To solve this task, it is proposed that the application device has at least one contactless application unit includes which is trained for this is, application medium in at least one free application medium jet or application medium curtain or application medium veil or in application medium spray drops to deliver and apply to the web of material based on the Order medium issued forces or / and movement impulses or / and based on a gravity Movement of the application medium, and that along the treatment path a material web smoothing device before or / and after the application device is provided. In addition to an order based on gravity for example, there is an order based on electrostatic forces into consideration.

According to the proposal of the invention, a contactless application of the application medium to at least one side of the material web, in particular a contactless (one-sided or double-sided) brushing of the material web, in online mode or in offline mode in the machine (in particular paper machine ne) enables. The material web smoothing device integrated in the machine ensures a high level of smoothness and possibly gloss of the material on one or both sides of the material web.

As far as the machine is not Manufactures material web, that is applied in offline mode (painted) and smoothed a significantly increased volume efficiency results from that the smoothing device and the application device are integrated in a machine, so that is applied as well as smoothed in an offline process.

The machine is also used for manufacturing the material web to be treated (to be painted or smoothed) (online process), so are moreover regarding the order of the order medium, so to speak Advantages of the conventional touching Online coating and conventional contactless coating received in combination in offline mode, namely on the one hand the higher volume efficiency of online operation and the better runnability of the contactless, conventional only non-contact swipe applied in offline mode. According to the invention the web smoothing device online also the high smoothness and possibly the gloss of the material is achieved.

The machine preferably points along a material web smoothing device at least in front of the application device on. Upstream of a material web smoothing before the application of the application medium is particularly useful and effective as a non-contact order process, in particular Coating process, the contour of the material web surface largely preserved (One speaks in this context of so-called contour coating processes). This means that a rough contour of the material web is not or only comparatively little offset by the application medium and smoothed out becomes. It will be all the higher product quality reached, the smoother the material web before the application medium is applied was. In this context, it has also been found that it it is better to straighten first and then apply the stroke as a rough contour to smooth out the painting.

It turned out to be favorable if the Material web smoothing device trained for it is to smooth the material web on at least one side in such a way that a material roughness between 5 μm, preferably at most 3 μm remains. These material web roughness values preferably relate to means the PPS process (Parker Print-Surve) determined values: roughness (PPS - 10 s) ≤ 5 μm, better ≤ 3 μm.

It will concern the web smoothing device or the material web roughness achieved by this, above all thought that these roughness values based on normal operating parameters the machine can be reached.

In addition, along the material path a material web smoothing device even after the application device be provided, for example to have a particularly high smoothness or a particularly high To achieve shine. For however, many requirements are placed in front of the order facility Material web smoothing device for one sufficient smoothness or for can provide a sufficient shine.

As a web smoothing device can be advantageous a smoothing from the group Softnip calenders, Breitnip calenders, Hartnip calenders, Super calender, multi-nip smoothing unit (e.g. Janus), 1-nip, 2-nip calenders.

Regarding the order of the order medium preferably a so-called curtain application process (curtain Coating). It is proposed that at least one executed as a curtain commission Contactless application unit is provided, which is the order medium in the form of at least one curtain or veil on the material web emits, preferably at least predominantly based on a movement of the application medium caused by gravity. Alternatively, could also a so-called spray application process (Spray coating) are used. It is proposed that at least one as a spray applicator executed Contactless application unit is provided, which is the order medium in the form of application medium spray drops or emits application medium jets onto the material web, preferably at least predominantly based on the application medium when exiting a nozzle arrangement movement impulses given by the commissioned work.

The curtain application process is across from the spray application process preferred because a higher product quality can be achieved based on the curtain application process and the curtain application process generally requires less maintenance entails than the spray application process.

The machine according to the invention can at least have a further material web treatment device. A such material web treatment device can be along the material web path between the web dispenser and the applicator or between the application device and the drying device or between the drying device and the processing device or / and receiving or / and dispensing the material web arranged and doing so the material web smoothing device according to the invention if necessary upstream or downstream be or in the material web delivery device or the application device or the drying device or the device for processing or / and recording or / and delivery of the material web can be integrated.

As already mentioned, the machine according to the invention also serve to manufacture the material web. It is proposed that the material web delivery device is a material web forming device includes that for that is formed from fed Starting material, preferably from a fiber suspension, the continuously Form material web. As a rule, then along the material path between the web forming device and the application device a drainage and drying section can be arranged, which is designed for the running material web at least by thermal or / and mechanical action of water to withdraw and the material web at least to a residual moisture content to dry. The along the material path in front of the application facility arranged material web smoothing device is particularly useful between the drainage and dryer section and the application device arranged or in a dryer section of the drainage and dryer section integrated. In this context it is quite possible that along at least one further material web treatment device the material web path between the material web forming device and the drainage and dryer section or between the drainage and dryer sections and the application device and thereby the material web smoothing device according to the invention possibly upstream or downstream or in the material web forming device or the drainage and dryer section is integrated.

But it can be the case with the machine also act as a machine that works in an offline process Medium application and smoothing of the material web. For this purpose, the material web delivery device can be a material web unwinding device for unrolling the material web from a respective material web roll include. The one mentioned above, along the material path the material smoothing device arranged in the application device is usually between the material web unwinding device and the applicator. It is quite possible that at least one further material web treatment device is provided that is along the web path between the web unwinding device and the application device and thereby the material web smoothing device according to the invention gff. upstream or downstream is integrated in the material web unrolling device is.

It should also be mentioned that the contactless order in particular also by means of a corresponding application device is advantageous if the order medium is available at several order points is applied to the running material web in the machine. The material web is created by the contactless application of the order medium less stressed than by a touching order, so that The risk of web breaks is reduced and accordingly the performance or runnability is improved.

According to another aspect the invention furthermore the use of a contactless application unit, especially a curtain commission or spray applicator, for applying a liquid or pasty Application medium preferably on a running material web Paper or cardboard and the use of a web smoothing device for smoothing a running material web, preferably made of paper or cardboard. According to the invention the contactless application unit and the material web smoothing device in an online process within a manufacturing machine and treatment of the material web or in an offline process within a machine for treating the material web used in combination, on the one hand a fluid or pasty application medium on a running material web, preferably made of paper or cardboard, apply and on the other hand smooth the material web or to be given a shine.

The invention also provides a method for the treatment of a material web, preferably made of paper or cardboard ready. It is proposed according to the invention that the method comprises at least the following steps:

• - Contactless Applying a liquid or pasty Application medium on at least one side of the running material web,
• - in front or / and after the contactless job: smooth at least one side the material web,
• - Dry the material web.

Regarding the implementation of the In particular, the process is thought that, if necessary, first dried, then smoothed out then if desired dried again, then applied without contact, then dried and then if desired smoothed again becomes.

The invention proposes among other things, to delete contactlessly in a uniform process and using a suitable calender, especially calender, to smooth being the smoothing can be done before or after painting. Smoothing using a calender before painting replaces a conventional one calender, so that a particularly good surface for painting as well as a Improvement of final quality (high smoothness or high gloss) can be achieved in a uniform process. By applying a curtain on a very smooth raw material (Raw paper) a very smooth end product is achieved. The smoothing according to the invention or / and after the stroke is therefore of particular importance because the stroke quality on the quality of the raw material (raw paper).

The following should be added. It concerns the contactless order of order medium, in particular the contactless dispute Chen, especially thought of such an application of the application medium that on the one hand the application takes place without contact and on the other hand no metering and preferably no leveling of the application medium by means of a doctor blade device or the like is required. The application medium is therefore preferably applied from the outset both in the correct dosage and in sufficient uniformity over the surface of the material web. This means that the material web is not applied in excess (so-called 1-to-1 application).

The invention is explained below of exemplary embodiments shown in the figures.

1 schematically shows four examples of possible configurations of a machine according to the invention for producing and treating a material web made of paper or cardboard ( 1a, b, c ) or a machine according to the invention for treating a web of paper or cardboard produced in another way ( 1d ).

2 represents a section from a machine accordingly 1a According to a first exemplary embodiment for the execution of a machine according to the invention with an application device that enables contactless application of application medium, in the present case on an upper side of the material web.

3 represents a section from a machine accordingly 1a According to a second exemplary embodiment for the execution of a machine according to the invention with an application device that enables contactless application of application medium, in the present case on an underside of the material web.

4 represents a section from a machine accordingly 1b According to a third exemplary embodiment for the execution of a machine according to the invention with application devices that enable contactless application of application medium, in this case on both sides of the material web.

5 represents a section from a machine accordingly 1c According to a fourth exemplary embodiment for the execution of a machine according to the invention with application devices that enable contactless application of application medium, in this case on both sides of the material web.

1 shows in the sub-figures 1a, 1b and 1c each an example of a paper machine according to the invention in a rough-robotic representation. It can be, for example, a Fourdrinier paper machine or the like. The paper machine 10a . 10b respectively. 10c has a wire section 12a . 12b or 12c with associated headbox and associated feed system. The stock feed system is designed to deliver a fiber suspension to the headbox in a constant volume flow, and the headbox and the wire section are used for web formation by uniform fiber distribution and dewatering and for web guidance. Along one in the section 12a . 12b respectively. 12c Starting section of the material web, this section is followed by a press section 14a . 14b respectively. 14c , which is used in particular to ensure mechanical dewatering of the material web by pressing it.

A drying section follows the press section along the material path 16a . 16b respectively. 16c , in which the material web is thermally dried (thermal drainage).

According to the examples of 1 is a material web smoothing device after the dryer section 18a . 18b respectively. 18c , for example a so-called calender (such as soft nip calender or wide nip calender) or a smoothing unit of another suitable type.

In all of the exemplary embodiments there is a contactless coating unit along the material path after the smoothing unit 20a respectively. 20b respectively. 20c arranged as an application device, preferably a so-called curtain applicator, which applies the application medium (in particular coating medium) to one side of the material web in a contactless manner, in the case of the curtain applicator preferably at least predominantly on the basis of a movement of gravity from a gap nozzle or the like in one so-called curtain or veil emerging application medium. The order is placed either on the side of the material web that can be identified as the top side at least over the largest part of the entire material web path, or on the side of the material web that can be identified as the bottom side of the material web at least over the largest part of the material web path in the Area of the commissioned work, however, may be oriented upwards in some areas.

On the application or coating unit 20a respectively. 20b follows a final drying section 22a or an intermediate dryer section 22b while on the coating unit 20c another coating unit applying medium to the other side of the material web 24c follows, just like the coating unit 20c applies the application medium to the material web in a contactless manner. According to the example of 1b is such a further coating unit 24b after the intermediate drying section 22b arranged.

On the coating unit 24b respectively. 24c a final dryer section follows along the material path 26b respectively. 26c , and at the end of the material web path there is a material web rewinder in the case of all three examples 28a . 28b respectively. 28c that are used to roll up the one-sided or two-sided coat material web on so-called drum tours.

In partial figure 1d a coater according to the invention is shown in a rough schematic representation. The coating machine 10d has a web unrolling device 17d on, in which the material web to be treated is rolled up by material web rolls on a respective reel. The unrolled material web is first a material web smoothing device 18d , for example a so-called calender (such as a soft nip calender or wide nip calender) or a smoothing unit of another suitable type, before the material web is then provided with application medium on both sides by means of the contactless coating units 20d . 24d , The configuration of the machine 10d in this respect corresponds to the configuration of the machine 10c according to 1c , since there is no intermediate drying between the medium application. On the coating unit 24d a drying section follows 26d , and at the end of the web path there is a web winding device 28d ,

2 shows a first example of a possible specification of the machine 10a according to 1 , A drying device can be seen 30a-1 the dryer section 16a which are used for the thermal drying of the material web M by means of circulating felt belts 32a-1 serves the material web M against heatable drying cylinders 34a-1 presses on which the material web M is subjected to so-called contact drying. The felt ribbons 32a-1 is a drying cylinder for drying the felt belt 36a-1 assigned.

The one from the drying facility 30a-1 emerging material web M is via a guide roller arrangement 38a-1 through a smoothing unit 40a-1 the web smoothing device 18a led by two smoothing rollers acting on the material web M on both sides 42a-1 and 44a-1 is represented. For example, it can be a so-called soft nip smoothing unit or a wide nip smoothing unit.

Another guide roller assembly 46a-1 the material web is through an application device 20a-1 performed, which has a curtain application work, through a dispensing head 52a-1 is represented. The dispensing head dispenses dispensed application medium in the form of an application medium veil or application medium curtain, which - in the exemplary embodiment shown - hits the upper side of the material web M on the basis of the movement of gravity and remains on this side of the material web without further metering and equalization around the to provide the desired order or line. The dispensing head 52a-1 can advantageously be assigned edge guide elements or the like for the curtain or the veil, as is known per se from the prior art (cf. for example DE 100 12 256 A1 . DE 197 35 588 A1 and DE 195 13 531 A1 ).

The material web M provided or coated with the medium is then passed into a convection or hot air dryer 60a-1 as an example of a contactless drying device in which the material web M or the application medium applied thereon is dried to such an extent that subsequently by means of a further drying device 70a-1 in the type of drying facility 30a-1 Contact drying of the material web can take place without loss of quality. The drying facility 70a-1 belongs together with the dryer 60a-1 to the final drying section 23a ,

How out 1a visible, joins the final drying section 22a the web winding device 28a on. However, further material web treatment devices could also be connected upstream of the material web reeling device, for example a further smoothing unit.

Another possibility of specifying the machine 10a according to 1a is in 3 shown. A drying device can be seen 30a-2 in the type of drying facility 30a-1 according to 2 , a smoothing work 40a-1 according to 2 corresponding smoothing 40a-2 and an applicator 20a-2 , whose curtain order work is in turn represented by a delivery head, which in 3 With 52a-2 is designated. Via a guide roller arrangement 46a-2 the material web M is guided in such a way that, compared to the example of 2 the other material web side is provided with a medium application without contact. The dispensing head 52a-2 can again be assigned edge guide elements and the like for the curtain or veil from the application medium.

Via a contactless drying device 60a-2 which, in addition to a contactless drying function based on hot air, also performs a contactless guiding and deflecting function in relation to the material web M similar to a so-called air turn, the material web then becomes a further drying device 70a-2 in the type of drying facility 30a-1 according to 2 fed together with the drying device 60a-2 the final dryer section 22a can be attributed.

A configuration accordingly 1b can be obtained, for example, that a machine section accordingly 2 and a machine section accordingly 3 are arranged one behind the other in a machine. 4 shows a corresponding example. A drying device is arranged one behind the other in the direction of web travel 30b-1 , a smoothing 40b , an application device 20b with one through a dispensing head 52b-1 represented curtain application, a contactless dryer 60b-1 , another contact drying device 30b-2 , an application device 24b with one through a dispensing head 52b-2 represented curtain application, a contactless drying and guiding or deflecting device 60b-2 and another contact drying device 70b to recognize. The dryer 60b-1 and the drying device 30b-2 form the intermediate drying section 22b according to 1b ,

If application of the application medium to the material web M is desired on both sides, the application medium can also be applied to both sides of the material web by means of a corresponding contactless application unit, before contactless drying and then finally contact drying, if the material web is guided accordingly. It is therefore not absolutely necessary to provide intermediate drying between the application of the application medium on one side of the material web and the application of the application medium on the other side of the material web. 5 shows a corresponding example that a specification of a machine according to the configuration 1c equivalent. You can recognize one with 30c designated contact drying device according to the device 30a-1 , a smoothing 40c , a first curtain dispensing head 52c-1 a first contactless application device 20c , a second dispensing head 52c-2 a second contactless application device 24c , a contactless dryer 60c and another contact drying device 70c according to the facility 30a-1 according to 2 , The material web is made by the smoothing unit 40c forth about a guide roller assembly 46c first under the first delivery head 52c-1 and then under the second delivery head 52c-2 passed through such that the first dispensing head 52c-1 the one and the second dispensing head 60c-2 the other side of the material web M metered with application medium in the form of a curtain or veil and applied without the need for subsequent leveling. After the second delivery head 50c-2 is an air guidance device 80c provided for a non-contact guidance of the material web M into the dryer on both sides 60c and through this to the inlet into the contact drying device 70c provides.

A configuration accordingly 1d can also be based on 5 are illustrated. You just have to look at the drying facility 30c replaced by a web unrolling device. The web of material rolled off from a web of material web is first the smoothing unit 40c fed and then in the contactless applicators 20c and 24c painted on both sides. In the contactless dryer, contactless drying then takes place (in particular by hot air and / or by infrared radiation) before the material web in the drying device 70c is brought to a final dry state under contact on both sides. The material web is then rolled up on so-called reels in the material web reeling device, not shown, unless further treatment in a corresponding treatment device, for example a further smoothing in a corresponding additional material web smoothing device, is provided.

Among other things, it is proposed in a machine for production and treatment or for treatment a material web, preferably made of paper or cardboard, at least an application device with at least one contactless application unit in combination with at least one material smoothing device to provide the one hand the application of a liquid or pasty application medium on at least one side of the running material web on contactless Ways and on the other hand a preceding the medium order or / and subsequent smoothing the running material web in an online process or in one Enable offline process.

10a, 10b, 10c

paper machine

12a, 12b, 12c

Wire section

14a, 14b, 14c

press section

16a, 16b, 16c

drying section

17d

Materialbahnabrollungseinrichtung

18a, 18b, 18c, 18d

Material web smoothing device

20a, 20b, 20c, 20a-1, 20a-2, 20d

applicator or coating unit

22a

final drying

22b

Between drying section

24b, 24c, 24d

applicator or coating unit

26b, 26c, 26d

final drying or dryer section

28a, 28b, 28c, 28d

Materialbahnaufrollungseinrichtung

30a-1, 30a-2, 30b-1, 30b-2, 30c

drying device

32a-1

Filzband

34a-1, 36a-1

drying cylinders

38a-1

Guide roller assembly

40a-1, 40a-2, 40b, 40c

calender

42a-1, 44a-1

smoothing roll

46a-1, 46a-2, 46c

Guide roller assembly

52a-1, 52a-2, 52b-1, 52b-2, 52c-1, 52c-2

Curtain dispensing head

60a-1, 60a-2, 60b-1, 60-b2, 60c

Drying device (contactless)

70a-1, 70a-2, 70b, 70c

drying device

80c

Air guide device

M

web

Claims (15)

Machine for producing and treating or for treating a material web (M), preferably made of paper or cardboard, at least comprising: - a web dispenser ( 12a ; 12b ; 12c ; 12d ), which is designed to continuously deliver a material web; - at least one application device arranged along a material web path, after the material web dispensing device ( 20a ; 20b . 24b ; 20c . 24c ; 20d . 24d ) for applying liquid or pasty application medium to at least one side of the running material web; A drying device arranged along the material path after the application device ( 22a ; 26b ; 28c ; 26d ) to dry the running material web to a drying state; A device arranged along the material web path after the drying device for processing or / and picking up and / or delivering the material web, preferably a material web reeling device ( 28a ; 28b ; 28c ; 28d ) for rolling up the material web onto a respective material web roll, characterized in that the application device has at least one contactless application unit ( 52a-1 ; 52a-2 ; 52b-1 . 52b-2 ; 52c-1 . 52c-2 ) which is designed to dispense application medium in at least one free application medium jet or application medium curtain or application medium veil or in application medium spray drops and to apply it to the material web (M) on the basis of forces or / and movement impulses imparted by the application medium or / and on the basis of a movement of the application medium caused by gravity, and that along the treatment path before or / and after the application device a material web smoothing device ( 18a ; 18b ; 18c ; 18d ) is provided. Machine according to claim 1, characterized in that the material web smoothing device arranged along the material web path in front of the application device ( 18a ; 18b ; 18c ; 18d ) is designed to smooth the material web on at least one side in such a way that a material web roughness of at most 5 μm (in particular measured by the PPS-10s measurement method), preferably of at most 3 μm (in particular measured by the PPS-10s measurement method) remains. Machine according to claim 2, characterized in that the material web smoothing device ( 18a ; 18b ; 18c ; 18d ) the material web roughness of at most 5 μm, preferably of at most 3 μm, is achieved on the basis of normal operating parameters of the machine. Machine according to one of claims 1 to 3, characterized in that the material web smoothing device ( 18a ; 18b ; 18c ; 18d ) at least one smoothing unit ( 40a-1 ; 40a-2 ; 40b ; 40c ) from the group of soft nip calenders, wide nip calenders, hard nip calenders, super calenders, multinip calenders, 1-nip, 2-2-nip calenders. Machine according to one of claims 1 to 4, characterized in that at least one as a curtain application unit ( 52a-1 ; 52a-2 ; 52b-1 . 52b-2 ; 52c-1 . 52c-2 ) executed contactless applicator is provided, which delivers the application medium in the form of at least one curtain or veil to the material web, preferably at least predominantly on the basis of a movement of the application medium due to gravity. Machine according to one of claims 1 to 5, characterized in that that at least one as a spray applicator executed Contactless application unit is provided, which is the order medium in the form of application medium spray drops or Emits application medium rays to the material web, preferably at least predominantly based on the application medium when exiting a nozzle arrangement movement impulses given by the commissioned work. Machine according to one of claims 1 to 6, characterized by at least one further material web treatment device, that along the web path between the web dispenser and the application device or between the application device and the drying device or between the drying device and the device for processing or / and recording or / and delivery arranged of the material web or in the material web delivery device or the application device or the drying device or the device for processing and / or recording or / and delivery the material web is integrated. Machine according to one of claims 1 to 7, characterized in that the material web delivery device is a material web forming device ( 12a ; 12b ; 12c ), which is designed to continuously form the material web from supplied starting material, preferably from a fiber suspension. Machine according to claim 8, characterized in that a dewatering and drying section (along the material web path between the material web forming device and the application device) ( 14a . 16a ; 14b . 16b ; 14c . 16c ) is arranged, which is designed to remove water from the running material web (M) at least by thermal and / or mechanical action and to dry the material web at least to a residual moisture content. Machine according to claim 8 or 9, characterized by at least one further material web treatment device which is arranged along the material web path between the material web forming device and the dewatering and drying section or between the dewatering and drying section and the application device or is integrated into the material web forming device or the dewatering and drying section. Machine according to one of claims 1 to 7, characterized in that the material web delivery device is a material web unwinding device ( 17d ) for rolling the material web from a respective material web roll. Machine according to claim 11, characterized by at least one further material web treatment device, which along the material web path between the web unwinding device and the application device arranged or integrated into the material web unrolling device is. Use of a contactless application, especially a curtain application ( 52a-1 ; 52a-2 ; 52b-1 ; 52b-2 ; 52c-1 ; 52c-2 ) or spray applicator, for applying a liquid or pasty application medium to a running material web (M) preferably made of paper or cardboard in combination with a material web smoothing device ( 18a ; 18b ; 18c ; 18d ) in an online process within a machine ( 10a ; 10b ; 10c ; 10d ) for the production and treatment of the material web or in an offline process within a machine for the treatment of the material web. Process for treating a web of material, preferably from Paper or cardboard, at least comprising the steps: - Contactless Applying a liquid or pasty Application medium on at least one side of the running material web, - before or / and after the contactless job: smooth at least one side the material web, - Dry the material web. A method according to claim 14, characterized in that - if necessary - only dried, then smoothed out then if desired once dried, then applied without contact, then dried and then if you want smoothed once becomes.