DE4231952A1 - Process, in particular simulation process for the production of coated web material and device for carrying out the process - Google Patents

Description

The invention relates to a method, in particular Si mulation process for the production coated Web material in which a section of the Bahnma terials a closed loop is formed Web material moved in the circumferential direction of the loop is coated and the web material in various where surroundings are treated and a simula tion device with a through deflection devices formed guide device for a loop Web material, a first drive device for loading because of the web material in the circumferential direction of the loop and means for generating a predetermined order atmosphere.

Such a device and such a method are known from DE 22 46 798 C3. Here is one Loop made of web material after passing through one Pass the pouring station past the nozzles of a nozzle dryer leads. The state variables of the dry air in the nozzle dryers can be adjusted practically without inertia. By  Changes in the state variables can be close to the Different ambient atmospheres or conditions different environments, in short, who creates the. Experimental plants of this type are necessary to pro plan production plants or plan existing plants in this way to be able to make a coated web material with desired properties as a finished product can be held. But they are also necessary to get in Test plants the ambient conditions in produc simulation systems and thus new products already in the test stage under production conditions to be able to develop. The dwell times in real pro Production plants are divided by the quotient of length the production line and speed of the pass found sheet material. As for a high Throughput also high throughput speeds of the Web material are required, it follows that Production facilities sometimes a considerable length can have. Testing new coatings in such production plants is out of the question for a single pass of web material with at least the length of the production plant would have to be used. Such an amount of coated web material is far too big to control the results. It is therefore necessary to determine the amount of the required railway dimension drastically reduce terials for experimentation.

Problematic in the simulation of the manufacturing process is that the train is not just static the reverse exercise conditions, d. H. essentially the surrounding atmosphere to be exposed, but in must move in this environment as it does in a Production facility is the case. Otherwise can bewe conditions-dependent influencing factors for the coating and their after-treatment, for example the vibration test hold the web, not sufficiently resilient be det.  

In the above-mentioned DE 22 46 798 C3 is the Bahnmate rial on a drum, that is on its lower side fully supported.

Another test apparatus is known from EP 0 098 804 B1 knows. Here is an attempt to simulate it improve that moving nozzles over a stationary Be guided. This is a relative speed between the ambient atmosphere and the train material generated.

The invention has for its object a method and to provide a device with which the manufacture coated sheet material under production-related Be conditions can be simulated.

This task is initiated in a procedure mentioned type solved in that the loop transverse to Be circumferential direction through the different environments is moved.

With the new process, on the one hand, the train material moved in the circumferential direction of the loop. This Movement is a good approximation of a movement of the web material in a production plant. The local Different environmental conditions can occur in time be kept stationary. To change the order the loop becomes transverse to the movement conditions direction of the web material shifted, whereby one reached a different environment, in which other reverse exercise conditions prevail. This essentially corresponds Lich also the construction of a production plant in which different environmental conditions locally from each other separated, namely one behind the other in the direction of web travel are arranged. By shifting the However, the loop becomes the one for the coating and Aftertreatment significantly reduced the space required  nert. The size of this room is no longer longer more by the speed at which that Web material moved and thus from the web treatment length determined.

In an advantageous embodiment, the loop in a direction perpendicular to one through the loop bounded area moves. So the loop is with in other words, move across its face. Here through is avoided by the movement of the Loop a print, for example through the surroundings atmosphere, on the surface of the web material is practiced. The movement of the loop can be seen here through, apart from frictional forces, almost wi carry out without hesitation. In addition, the Guiding the loop in such a movement quite easy.

It is further preferred that the web material in the Loop held under a predetermined tension that will depend on the position of the loop is changeable. You can see the shape of the Change loop. For example, you can allow or even consciously control that the web material is out a stretched shape while pouring into a wel lenform is transferred during drying. Such Waveform can be in Pro production facilities occur.

It is preferred that the change in the loop tension in the course of the transverse movement of the loop he follows. In other words, the tension changes transition from an ambient atmosphere to another, as is the case with production plants is sometimes the case.  

The different environments are advantageous in zones separately along the path of movement of the loop arranges. This allows a clear separation of the different environments, creating defined Test conditions are created. The control of the individual environmental conditions is simplified.

It is preferred that the web in at least one Zone is coated. Other zones can, for example of solidification, cooling, drying or serve a moisture treatment.

The loop advantageously becomes discontinuous moves and dwells in for predetermined dwell times individual zones. The dwell times can then Throughput times of the web material through individual conversions exercises in the production plant. Through the This type of movement may require space for the simula tion can be further reduced.

It is preferred that the residence times in the Are of the order of 5 to 100 s during the times for moving the loop from one zone to another others are in the order of 0.3 to 3 s. Of the Difference when changing zones compared to one real production plant, is therefore practical hardly any weight.

Furthermore, in an advantageous embodiment seen that the speed of movement of the web materials in the circumferential direction of the loop is subject to change. This will create new possibilities opportunities for experimentation.  

The task is in a simulation device type mentioned solved in that several Ein directions for creating different environments in Zones are arranged side by side and a second Drive device is provided which the loop moved through the different zones. As above executed, this allows movement of the web materials in the respective environment with the desired generate speed. A change in the environment gene is apparent from the second drive device called the loop from an environment, namely a first zone in a different environment, namely a second zone.

The guide devices preferably have min at least an air cushion guide that through all Zo through. On such an air cushion guide tion, as for example from DE 24 47 119 C2 is known, the loop can be practically friction move freely. The same low friction will also the movement of the web material in the circumferential direction of the Opposite loop. Although the web material in the loop is redirected more often than in a pro production plant with essentially straight-line guidance of the web material, the impact of this order steering through the air cushion guide is relatively low hold. You can actually do it in most cases to neglect.

For this purpose, the air cushion guide is in each zone with the Fluid supplied corresponding ambient atmosphere, d. H. the air emerging from the air cushion guide speaks in temperature and moisture content in the we some of those in the corresponding zone The atmosphere. This is the treatment of the web material also ensured during the deflection.  

It is also preferred that the guide device at least least has a driven roller that the first Drive device forms and together with the loop fe is movable in the axial direction. The powered Rol le in turn drives through friction or, if necessary Perforation of the web material in the circumferential direction the loop, which creates the desired Relativge speed between the web material and the vice exercise atmosphere is generated. This can, for example show the vibration behavior of a moving web be replicated. Because the driven roller together is moved with the loop, you have to train the surface of the driven roller no return take care that the web material with respect to this role must be postponed. So the role can essentially designed for your drive task become.

Furthermore, a non-driven can advantageously Roll be provided, at least in sections is designed as a pouring shaft. By dividing the Tasks between a driven roller to drive of the web material and a non-driven roll as a pouring shaft, both rollers can do better for their egg common tasks can be interpreted. For example the pouring wave with a much higher precision be stored. This could be done with one driven or transversely displaceable shaft with only one achieve relatively high effort.

It is advantageous to have an empty axially next to the pouring shaft arranged roller on which the loop at Transverse movement passes. The high precision with which the Casting shaft is then stored only for a relative narrow area, namely only for a casting zone be maintained. For the transverse movement of the loop  an idler can then be used with can be stored with much less effort.

It is also advantageous that the idle roller and / or the pouring shaft is axially movable. Hereby there is a friction of the web material on the casting shaft or avoided on the idle roller.

It is also preferred that the driven and / or the non-driven roller an axial drive as part of the second drive device. If both Rollers are driven, transverse stresses in the Web material can be largely avoided.

The axial drive is preferably a resolver drive trained. Such a drive is fast and allows the loop to be positioned with ho fro precision.

The loop advantageously lies on a transport roller Zen arrangement with at least one transport roller, whose axis can be tilted. This is another possibility ability to move the loop in the transverse direction. With egg The incline of the axis tries to find the location of the lowest friction resistance to take, whereby there is a transverse displacement of the path. This can by a corresponding movement of the driven or the non-driven roller are supported.

In order to improve the path shift, one can another advantageous embodiment may be provided, that the transport roller assembly with a negative pressure generating device is connected, at least in a part of the area around the transport rollers terdruck generated. The vacuum ensures that the Web with a certain force on the transport roller is present, which ensures that at a Nei  The axis of the transport roller also corresponds The transverse movement of the loop takes place.

It is preferred that the transport roller arrangement has at least two transport rollers and the lower pressure between adjacent rollers can be generated. Of the Space between two rollers can be sufficient Dimensions are sealed to the outside, so that the sub do not press through the ambient atmosphere is balanced again. As a further energy saving it can be provided that the vacuum will only produce when the loop is actually moved across should. The transport roller arrangement does not have to be in the be provided over the entire width of the device. they can according to the transverse movement of the loop be guided, so to speak the loop pushes in front of you.

The driven and / or the non-driven roller can advantageously with a tensioning device be provided on the respective role one in egg exerts force acting radially. The opposite By force of this is taken up by the web material that is diverted around the respective role. This ent the desired voltage is in the loop.

In order to be able to set predetermined test conditions NEN, the tensioning device can set a force have direction. With the help of the force adjustment device it is possible to increase the tension in the loop change. This allows the behavior of the web materials when moving in the circumferential direction of the Adjust the loop to the specified conditions.  

In one embodiment, the tensioning device advantageously a spring arrangement with adjustable pretension. The one acting in the radial direction Force is therefore applied by the spring.

The spring arrangement can be used to adjust the preload advantageously one in particular by a motor have adjustable stop. The attack can of course, through a corresponding tour, for example a guide rail, adjusted in the course of the movement become. However, the engine gives a larger variety here possibility and the possibility of changing the Web tension during the transverse shift. The train voltage can thereby be set very precisely, where appropriate, a position dependency of the Loop can be taken into account.

In another advantageous embodiment, the Clamping device alternatively or in addition to the spring a weight based on its weight in the radial direction affects the role. To set the Ge weight can reverse the weight if necessary be directed. Even with weight is a rela tiv exact setting of the web tension possible.

It is preferred that the weight on a ge inclined sliding surface is arranged, the inclination kel is adjustable in particular by a motor. By changing the angle of inclination, the can set the weight force of the weight len.

The loop is preferably in a revolving Channel that creates an ambient atmosphere in one predetermined space on both flat sides of the Bahnmate rials includes. The space within which the reverse  Exercise atmosphere must be kept in stock, can be kept small.

It is preferred that the channel on its inside side nozzles to create the ambient atmosphere points, with an inner nozzle system opposite one Side and an outer nozzle system opposite the other Side of the web material is arranged. The surrounding So the atmosphere is from both sides of the railway material than brought into the channel. This is one quick and precise control of the parameters or closed stand sizes of the ambient atmosphere possible. Otherwise This type of loading corresponds to the conditions in a conventional production plant. The Web material is targeted from both sides with the the respective ambient atmosphere.

Advantageously, is inside the device Supply space delimited to the outside by the duct formed by the supply and possibly disposal supply lines for the inner nozzle system. This is another advantage of the channel. He allows the formation of a supply room through which ver different zones separated from the inside with their respective Atmosphere can be supplied. At the same time a removal of the used or no longer needed Atmosphere possible.

Each zone is advantageously one supply and one Disposal line assigned, being the line route concentric pipes are provided and the Versor supply line is formed by the inner tube. Man can then form the two concentric tubes so that with the disposal line, that is, for the "exhaust air", there is less flow resistance than for "Supply air". This is a recirculation of the atmosphere possible in the individual zones, without  build up the desired pressures in the individual zones. Should If these pressures are desired, you can use a appropriate design of the flow resistances in generate the supply and disposal lines. Any zone can be supplied separately, so that in each zone defined environmental conditions can be set nen.

For this it is preferred that a pair of tubes each at a connector at the ends and inside the device has a partition. So on the one hand you can Use continuous tubes, which ensures a high mecha African stability is achieved. On the other hand, leave supply two zones with a pair of pipes, so that the number of pipes or pipe pairs in the supply room can be kept within reasonable limits.

To make the channel accessible, for example is desirable for maintenance work is more advantageous provided that the channel to the outside through a Housing is limited, parallel to the direction of the Movement of the loop is slidable. If the casing is shifted, is the movement space of the Bahnmate rials in the circumferential direction of the loop and given if freely accessible across it, so that if necessary also removed a broken loop from the device can be.

It is preferred that the housing has at least two Has parts that ver in opposite directions are slidable. This takes account of the fact worn that the entire device only over their End faces can be supported as a different Ab support the movement of the loop within the front direction would conflict. By the opposite set displaceability of the two housing parts lets the support length will decrease.  

It is appropriate that the housing is an upper part that is essentially U-shaped with downward dish teten thighs is formed, and a substantially Chen has just formed lower part. Top and the lower part can then be guided in the middle, without problems from one-sided loads can come.

The invention is based on preferred in the following Embodiments in connection with the drawing described. Show here:

Fig. 1 tion device is a schematic view of a Simula,

Fig. 2 is a schematic cross-section of the simulation device,

3 shows a first embodiment of a device Spannein.,

Fig. 4 shows a second embodiment of a clamping device,

Figures 5 to 7 is a schematic view of a Einrich. Tung for transverse movement of a material web and

Fig. 8 is a schematic view of supplying individual zones with air.

A simulation device 10 has a plurality, in the present case eight, zen 1 to 8 arranged side by side. A cross section through such a zone is shown in FIG. 2. Each zone has a circumferential channel 11 in which a material web 13 ( FIGS. 3 to 7) in the form of a closed loop 12 can be guided. The channel is bounded on the outside by an outer housing 14 and on the inside by an inner housing 15 , the outer housing 14 having an essentially U-shaped cross section of upper part 16 with downwardly projecting legs and an essentially flat lower part 17 . The inner housing 15 encloses a supply space 18 , in which supply and disposal lines 19 , 20 are arranged in the form of concentric tubes. The line routing will be explained in connection with FIG. 8. In addition, supply walls 18, not shown, can be provided in the supply space in order to form a supply air and an exhaust air space 54 or 56 ( FIG. 8).

The outer housing 14 carries an outer nozzle system 22 formed by a plurality of nozzles 21 , which is supplied with conditioned air by an outer supply line 23 for the upper part 16 and a further outer supply line 24 for the lower part 17 . In a similar manner, the inner housing 15 carries a sensor system 26 formed from a plurality of nozzles 25 , which provides ver via the supply lines 19 and is disposed of via the disposal lines 20 . For the sake of clarity, only a one supply line 23 for the upper part 16 and an outer supply line 24 for the lower part 17 is provided. In fact, however, a separate supply line is provided for each of the zones 1 to 8 , so that each of the zones 1 to 8 can be supplied with a specially conditioned atmosphere or can be supplied with it.

To guide the material web 13 in the channel 11 Füh approximately in the form of two air cushion guides 27 and 28 and a driven roller 29 and a non-driven roller 30 are provided. The air cushion guides 27 , 28 are known per se and are described, for example, in DE 24 47 119 C2. The air cushion guides 27 , 28 go over the entire width of the device 10 before, but are divided into zones with respect to the air supply, so that the desired ambient atmosphere can be maintained in each zone without the air cushion guides 27 , 28 inflowing air the surrounding atmosphere is changed in an undesirable manner.

The non-driven roller 30 is formed as a casting shaft. It is disposed adjacent at least, an emulsion can be applied to the material web 13 in some areas, in the present example in the zones 2 and 7, a casting station 31 and 68 with the aid of the past traveling material web. 13

The driven roller 29 is provided with a device 32 Spannvorrich. For this purpose, the roller 29 is mounted on a slide 33 which is movable relative to a part 34 of the inner housing 15 . The slide 33 forms an abutment for a spring 35 , while the other abutment is formed by a stop 37 which can be moved with respect to the part 34 by means of a motor 36 . For this purpose, for example, the stop 37 can by means of a screw thread on the motor shaft 38 BEFE be Stigt so that it door shaft at a rotation of Mo 38 shifts in axial direction. As a result of this displacement, the length of the spring 35 changes and thus its pretension. By changing the tension before the spring 35 , the tension of the web material 13 in the loop 12 can be changed. Such a change in the web tension is desirable since the web material can be brought from a relatively strongly tensioned state, in which the web material essentially runs at least in sections in the form of a straight line, to a less tensioned state, in which the web material runs in an undulating manner. as shown in Fig. 2. Such a waveform results at a lower web tension, for example, in that the nozzles 21 of the outer nozzle system 22 and the nozzles 25 of the inner nozzle system 26 are arranged offset to one another in the direction of circulation.

Another embodiment of a web tension adjustment device is shown in FIG. 4. Here the web tension is generated by a weight 39 which is firmly connected to the carriage 33 which carries the roller 29 . The carriage 33 is in turn movably mounted on the part 34 connected to the inner housing 15 . The inclination of the surface of the part 34 to the horizontal is adjustable with the aid of a motor 40 , for example a piston-cylinder arrangement, as a result of which the weight force of the weight 39 acting on the roller 29 also changes. For the sake of clarity, the fulcrum 41 around which the part 34 is pivoted is drawn ben the roller 29 . However, it is advisable to let the pivot point 41 coincide with the axis of the roller 29 so that there is no change in the position of the roller 29 when the part 34 is pivoted.

Above the roller 29 is a Transportwal zenanordnung 42 , which is tert in FIGS . 5 to 7 in more detail. The transport roller arrangement 42 has two transport rollers 43 , 44 which are rotatably mounted in a housing 45 . The transport rollers 43 , 44 have a friction-increasing surface, for example made of rubber or an elastic plastic. The housing 45 is closed on all sides. A suction opening 46 is located only between the two rollers 43 , 44 . A vacuum connection 47 is arranged on the opposite side of the suction opening 46 . The housing 45 with the transport rollers 43 , 44 is normally arranged with respect to the material web 13 so that the axes of the transport rollers 43 , 44 are substantially perpendicular to the direction of movement of the material web 13 , which is indicated by an arrow 48 . However, the housing 45 can be rotated within certain limits, so that the axes of the transport rollers 43 , 44 incline out of this position, that is to say they are no longer perpendicular to the direction 48 of the movement of the material web 13 . As long as the housing 47 is rotated in this way, that is, as long as the axes are inclined, the vacuum connection 47 is pressurized with vacuum, so that the web 13 is pressed by the ambient pressure onto the transport rollers 43 , 44 . This increases the friction between the transport rollers 43 , 44 of the material web 13 . Due to the inclined position of the transport rollers 43 , 44 , the material web 13 is now additionally moved transversely in the direction of the arrow 49 . The loop 12 is therefore moved transversely to the direction of movement of the material web 13 . If at de rollers 29 , 30 are driven, the trans port roller arrangement can be saved if necessary. It is shown that the transport rollers 43 , 44 have a length which corresponds approximately to the web width. In this case, the transport roller assembly 42 must be followed in the transverse direction of the movement of the material web 13 . This can be omitted if the length of the transport rollers 43 , 44 corresponds approximately to the stroke length, ie the length of movement of the material web 13 in the transverse direction.

During the movement of the material web 13 in the direction of the arrow 49 , the driven rollers 29 and the non-driven roller 30 can also be moved. For this purpose, for example, the part 34 can be moved in the axial direction with the aid of a linear motor 50 . Also in a manner not shown, a resolver drive can be provided which moves the two rollers 29 , 30 into the desired zone and positions them there.

Fig. 8 shows the supply of the individual zones 1 to 8 with conditioned air for generating a desired atmosphere and their disposal. For the eight zones, four pairs of pipes 19 , 20 (see also FIG. 2) are provided, which are arranged concentrically to one another. Each pair of tubes serves two zones, for example the pipes 19, 20 zones. 7 and 8 Between the two supply zones, each pair of tubes 19 , 20 has a partition 51 . Each pair of pipes is loaded and disposed of from both sides, so that each of the two zones 7 , 8 can be separately supplied and disposed of. The conditioned air entering through the supply pipe 19 in the direction of arrow 52 enters the supply air space 54 through an outlet opening 53 , from where it arrives at the nozzles 25 of the inner nozzle system 26 . In the inner housing 15 , outlet openings 55 are provided, from which the conditioned air can pass from the channel 11 into the exhaust air space 56 , from where it can exit through the line 20 in the direction of arrow 57 . The escaping air can be recycled in a known and not shown manner for re-use, whereby cleaning and renewed conditioning may be necessary. The conditioning tion can consist, for example, of heating, with a predetermined humidity being set at the same time. Similarly, the nozzles 21 of the outer nozzle system 22 can be charged. The conditioned air then emerges from the nozzles 21 in the direction of the arrows 58 and thus reaches the material web 13 that is passing by. The supply air space 54 and the air space 56 are essentially of the same design for all zones, so that the same pressure ratios can be set for all the zones.

In order to make the channel 11 accessible, the upper part 16 of the outer housing 14 is displaceable relative to the inner housing 15 in the direction of the arrow 59 , while the lower part 17 of the outer housing 14 can be displaced in the direction of the arrow 60 . This is possible because, for example, that the outer housing 16 is suspended on slide rails 61 , which in turn are fastened to a ceiling 62 or a corresponding support frame. The lower part 17, however, is slidably mounted on sliding rails 63 , which are supported on the floor 64 . This ensures that the inner housing 15 can be supported from both end faces. Corresponding supports 65 are designed in portal form on the end face on which the lower part 17 is moved out. The inner housing 15 is otherwise stationary. It is accessible after opening the Außenge housing 14 , ie moving the upper part 16 and lower part 17 . If this is necessary, a loop 12 , which has caught ver in the channel 11 , can be removed after opening the housing.

As can be seen from FIG. 1, a loop-forming device is arranged in the first zone, in which a section of a material web is unwound from a supply roll 67 and formed into a loop.

In zone 2 , the casting station 31 is provided, by means of which the material web 13 formed into the loop 12 is coated with a first emulsion. In zones 3 , 4 , 5 and 6 , the coated material web 13 is cooled and dried using various temperature and moisture levels. The casting shaft 30 and the non-driven roller 29 are designed so that they have a relatively low thermal inertia. These two roles adapt to the prevailing temperatures relatively quickly. A further casting station 68 is arranged in zone 7 . Here, another emulsion can be applied to the material web, which is dried in the last zone 8 .

The device 10 operates as follows:

From the supply roll 67 a portion of a mate rialbahn 13 is unwound and formed into a loop 12 ge. The material web 13 is driven in the direction of the arrow 48 . At the same time, the loop is moved in the direction of arrow 49 into zone 2 , where it is coated. Then it is moved to the other zones 3 to 8 . The loop 12 stays in each zone 1 to 8 for a predetermined dwell time and is then moved very quickly into the next zone. The time required for the method, ie for the transverse movement of the loop 12 , is considerably shorter than the dwell time. With dwell times in the order of 5 to 100 s, the travel times are about 0.3 to about 3 s. In one embodiment, dwell times of about 10 to about 15 s were combined with travel times of about 0.5 s. In each zone, the material web 13 is exposed to the desired ambient conditions, for which purpose conditioned air is supplied through the nozzle systems. This not only achieves a relative movement of the material web 13 to the nozzles, but also a movement of the material web 13 itself, whereby one can also search for the effects of the oscillation behavior on the coating of the material web 13 .

In the course of the transverse movement of the loop, the voltage of the loop 12 can be changed in order to be able to convert the web 13 from a stretched state, as is recommended, for example, for coating, into a wel-shaped state, as shown in FIG. 2 is.

In the individual zones, un Different speeds for the material web can be set. So it may be desirable to be the Be stratification at speeds other than dry to be able to perform.

Claims (36)

1. The method, in particular a simulation method for the production of coated web material, in which a closed loop is formed from a section of the web material, the web material is moved in the circumferential direction of the loop and the web material is coated and after-treated in various surroundings, characterized in that the loop is moved across the circumferential direction through the different surroundings. 2. The method according to claim 1, characterized in that that the loop is in a direction perpendicular to egg ner area delimited by the loop becomes. 3. The method according to claim 1 or 2, characterized records that the web material in the loop un ter is held at a predetermined tension, which depending on the position of the loop is changeable.   4. The method according to claim 3, characterized in that the change in loop tension in ver the transverse movement of the loop takes place. 5. The method according to any one of claims 1 to 4, characterized characterized that the different environments in Zones separated along the movement path of the loop are arranged. 6. The method according to claim 5, characterized in that the web is coated in at least one zone becomes. 7. The method according to claim 5 or 6, characterized records that the loop moves discontinuously is and for predetermined dwell times in single lingered zones. 8. The method according to claim 7, characterized in that that the times when the loop of one Moving zone to another becomes much shorter are than the dwell times. 9. The method according to claim 8, characterized in that the residence times in the order of 5 to 100 s lie during the times for the movement the loop from one zone to another in the Of the order of 0.3 to 3 s. 10. The method according to any one of claims 1 to 9, characterized characterized that the speed of the movement supply of the web material in the circumferential direction of the Loop can be changed depending on the position.   11. Simulation device for carrying out the method according to one of claims 1 to 10 with a guide device formed by deflection devices for a loop made of web material, a first drive device for moving the web material in the circumferential direction of the loop and devices for generating a predetermined surrounding atmosphere, characterized in that several re devices (22, 26) for generating ner various environments in zones (1 - 8) being adjacent to each other are arranged and a second driving means is provided for moving the loop through the various zones ver. 12. The device according to claim 11, characterized in that the guide means comprise at least an air cushion guide (27, 28), which by all zones (1 - 8) passes. 13. The apparatus according to claim 12, characterized in that the air cushion guide (27, 28) in each zone (1 - 8) correspond with the ambient atmosphere is supplied to the fluid. 14. Device according to one of claims 11 to 13, characterized in that the guide device has at least one driven roller ( 29 ) which forms the first drive device and together with the loop ( 12 ) is movable in the axial direction. 15. The apparatus according to claim 14, characterized in that a non-driven roller ( 30 ) is easily seen, which is at least partially designed as a casting shaft. 16. The apparatus according to claim 15, characterized in that axially next to the casting shaft ( 30 ) an idler roller is arranged, to which the loop passes during the transverse movement. 17. The apparatus of claim 15 or 16, characterized in that the idler roller and / or the pouring shaft ( 30 ) are axially movable. 18. Device according to one of claims 14 to 17, characterized in that the driven and / or the non-driven roller ( 29 , 30 ) have an axial drive ( 50 ) as part of the second Antriebseinrich device. 19. The apparatus according to claim 18, characterized in net that the axial drive as a resolver drive is trained. 20. Device according to one of claims 11 to 19, characterized in that the loop ( 12 ) rests on a transport roller arrangement ( 42 ) with at least one transport roller ( 43 , 44 ), the axis of which can be inclined. 21. The apparatus according to claim 20, characterized in that the transport roller arrangement ( 42 ) with egg ner negative pressure generating device ( 47 ) is connected, which generates at least in a part of the environment of the transport rollers ( 43 , 44 ) a negative pressure. 22. The apparatus according to claim 21, characterized in that the transport roller arrangement ( 42 ) has at least two transport rollers ( 43 , 44 ) and the negative pressure between adjacent rollers can be generated bar. 23. Device according to one of claims 14 to 22, characterized in that the driven and / or the non-driven roller ( 29 , 30 ) are provided with a tensioning device ( 33 ) on the respective roller ( 29 , 30 ) exerts force acting in a radial direction. 24. The device according to claim 23, characterized in that the clamping device ( 32 ) has a Kraftein adjusting device ( 36 , 39 ). 25. The apparatus of claim 23 or 24, characterized in that the clamping device has a spring arrangement ( 35 ) with adjustable bias. 26. The apparatus according to claim 25, characterized in that the spring arrangement ( 35 ) has a stop ( 37 ) which is adjustable in particular by a motor ( 36 ). 27. The apparatus of claim 23 or 24, characterized in that the clamping device has a weight ( 39 ), the weight of which acts in the radial direction on the roller. 28. The apparatus according to claim 27, characterized in that the weight ( 39 ) is arranged on an inclined sliding surface ( 34 ), the angle of which is adjustable in particular by a motor ( 40 ). 29. Device according to one of claims 11 to 28, characterized in that the loop ( 12 ) is guided in a circumferential channel ( 11 ), which includes an ambient atmosphere in a predetermined space on both flat sides of the web material. 30. The device according to claim 29, characterized in that the channel ( 11 ) on its inside has nozzles ( 21 , 25 ) for generating the ambient atmosphere, an inner nozzle system ( 26 ) opposite one side and an outer nozzle system ( 22 ) against the other side of the web material ( 13 ) is arranged. 31. The device according to claim 29 or 30, characterized in that in the interior of the device an outwardly through the channel ( 11 ) limited supply space ( 18 ) is formed by the supply and optionally disposal lines ( 19 , 20 ) for the inner nozzle system ( 26 ) are guided. 32. Apparatus according to claim 31, characterized net gekennzeich that each zone (1 - 8) has a supply and a discharge line (19, 20) is associated, wherein vorgese the conduction path concentric tubes hen are and the supply line by the held re tube ( 19 ) is formed. 33. Apparatus according to claim 32, characterized in that a pair of tubes ( 19 , 20 ) has a connection at both ends and in the interior of the device a partition ( 51 ). 34. Device according to one of claims 29 to 33, characterized in that the channel ( 11 ) is limited to the outside by a housing ( 14 ) which is displaceable parallel to the direction ( 49 ) of the movement of the loop ( 12 ). 35. Apparatus according to claim 34, characterized in that the housing ( 14 ) has at least two parts ( 16 , 17 ) which are displaceable in opposite directions ( 59 , 60 ). 36. Apparatus according to claim 35, characterized in that the housing ( 14 ) has an upper part ( 16 ) which is substantially U-shaped with legs directed downward, and an essentially planar lower part ( 17 ).