DE102011081239A1 - Sheet forming apparatus for manufacturing two or multi-layered cardboard- or packing paper web using machine, has belt that directly incorporates one layer and indirectly incorporates another layer made of fiber material suspension - Google Patents

Abstract

The sheet forming apparatus (1) has two flow boxes (4.1,4.2) for feeding a fiber material suspension (2), where a belt (7) has a label-free receiving side (7.S) with roughness (Rt) in a specific range. The belt directly incorporates a layer (L.1) made of the fiber material suspension and indirectly incorporates another layer (L.2) made of fiber material suspension. Another label-free belt (8) is provided to incorporate the latter or third layer made of fiber material suspension. The latter or third layer is transferred and delivered to the former label-free belt. An independent claim is included for a machine for producing two or multi-layered cardboard- or packing paper web, particularly two-or multi-layered graphic and equilateral cardboard web.

Description

The invention relates to a sheet forming apparatus for producing a two- or multi-ply cardboard or packaging paper web, in particular a two- or multi-layer graphic and preferably equilateral paperboard web of at least two pulp suspensions comprising at least two respective headbox for feeding the respective pulp suspension, at least one sieve and a plurality of drainage elements comprising forming units for producing a single layer of at least one pulp suspension and a belt for receiving and continuing the at least two layers produced from each at least one pulp suspension.

Such a sheet forming device is for example from the document DE-PS 464 278 known. The illustrated sheet forming apparatus is part of a rotary screen board machine or screen machine which operates with a number of round screen cylinders in which the webs must be passed through a series of pre-presses (wet roller pairs) after leaving the cylinder molds for dewatering before passing through the usual wet presses is delivered to the dryer section. An endless belt, a so-called recording tape, picks up the webs of the individual screen cylinders and combines them into a web. At the end of the recording tape is passed over two rollers that deliver the web directly to the treadmill wet rollers of the wet presses. The endless belt in function of a receiving belt is a water-impermeable and preferably impregnated cloth belt of a known type, a metal belt or a similar conveyor in the width of the web, which are supplied by water-permeable felt belts the webs of the individual screen cylinder. The water-impermeable receiving tape is used here without supplying an adhesive or impregnating agent as a carrier of the individual webs composed cardboard or paperboard web during its construction, the cardboard and paperboard web depends only due to the adhesion of the wet pulp to the underside of the water-impermeable recording tape.

Furthermore, from the document EP 1 262 596 A2 a sheet forming apparatus, in particular a machine for producing a multilayer fibrous web, in particular paper or board web or packaging paper web, known in which the layers formed in particular by a respective former are vergautscht together, wherein at least one of the former to form a multilayer sheet comprises a multi-layer head box which is charged with at least two different substances or streams of different composition for different layers. At the end of the sheet forming apparatus, the multilayer fibrous web is removed from a press felt guided via a removal device, in particular a pickup roller. The apparatus comprises, in addition to the formers including the headboxes associated therewith, a press section, a dryer section, at least one coating or application device and / or a reel-up.

Furthermore, from the document DE 100 15 828 A1 a machine for producing a fibrous web having a backsheet, a cover layer and at least one interposed insert, in particular a paper or board web, preferably a plasterboard web, in which the layers formed by a respective former and having on each side a higher fines content are interconnected be vergautscht.

And from the publication DE 199 51 928 A1 For example, a sheet forming apparatus is known for producing a multilayer paper or board web having a sheet forming unit. The sheet forming unit consists of a Primärlangsieb and two trained as a twin-wire former secondary screens which place a first layer of multilayer paper or board web on a second layer of Primärlangsiebs. The twin-wire former has a forming roller as the deflection roller, and a suction box is arranged in the region of the upper secondary screen of the twin-wire former.

In all known sheet forming devices, the multilayer fibrous webs to be produced come into contact with a wide variety of fabrics, in particular sieves and press felts, so that ultimately markings (top / bottom), such as screen and felt markings, and washouts of fine and / or fillers in the multilayer to be produced Fiber web, especially in the functional side are unavoidable. Two or more layers of fibrous webs are washed on one or both sides during their production. Such a washed-out, even to a certain extent even damaged, two-ply or multi-ply fibrous web should not, in a known manner, represent the later-external functional side of the product ultimately produced. It is also well known to those skilled in the art that such markings (top / bottom) in the produced two- or multi-ply fibrous web negative impact on the smoothness or volume and / or the appearance (gloss, brightness, whiteness, color) thereof.

Furthermore, have machines for the production of graphic board usually in their respective wet part of a hybrid or gap former. The graphic board to be produced is usually produced in one layer, since only 100% pulp is permitted. On the other hand, since the highest qualities, in particular with regard to smoothness, gloss and the like is required, elaborate finishing steps, such as surface sizing, Vorglätten, brushing (film and blade) and satin finish, carried out and be demanded best raw paper.

At high raw basis weights, however, the formation suffers in a known manner, especially when using a gap former. For example, graphic cartons with raw basis weights of about 150 g / m ² and more for headbox consistency have to be produced at 2%. The person skilled in the art immediately recognizes that this is unfavorable in the presence of an inhomogeneous pulp suspension in the headbox nozzle. A lower consistency can not cope with the roll-blade former concept in basis weight because the dewatering capacity would not suffice.

Furthermore, only below-average gap strength values are achieved. One tries in a known way to improve this situation. But this succeeds only conditionally, since the glue used can penetrate only slightly deep into the base paper.

The often required final surface properties (PPS <1) also require the best raw paper. Disturbing here are screen and felt marks (top / bottom) or surface washes (fine and filler losses). It was recognized that disturbances (roughness spectrum) in the wavelength range 0.02 to 0.20 mm should be eliminated. These disorders are caused by the respective tissue structure of sieves. Thus one tries more or less successfully to eliminate this weak point with a calender after the first night dry section. However, this is only possible to a limited extent, and in addition the thickness of the fibrous web to be produced, ie the specific volume, is reduced with concomitant negative effects on the rigidity of the fibrous web to be produced. Even a subsequent painting process can not make all raw paper defects ineffective.

It is therefore an object of the invention to improve a sheet forming apparatus of the type mentioned in such a way that the production of a two- or multi-ply cardboard or packaging paper web, in particular a two- or multi-layered graphic and preferably equilateral paperboard web with two outer function pages, the highest has possible initial smoothness, is ensured continuously and reliably. The emergence of markings (top / bottom), such as screen marks, leaching of fines and / or fillers and / or formation disturbances in the produced two- or multi-ply cardboard or packaging paper web, in particular the produced two- or multi-layer graphic and preferably equilateral paperboard web should be largely avoided on both the top and bottom.

This object is achieved in a sheet forming device of the type mentioned in the present invention that the first and produced at least one pulp suspension layer immediately and the last, in particular the second made of at least one pulp suspension layer indirectly receiving tape a mark-free receiving side with a roughness in the field from 0.03 to 1 mm, preferably from 0.05 to 0.2 mm, in particular from 0.06 to 0.1 mm, and that another band for receiving the last, in particular the second or third and from each at least a fibrous suspension produced position and for transfer and transfer of the same to the first or second and made of at least one pulp suspension layer already leading band is provided. Roughness is by definition the total height of the roughness profile according to DIN EN ISO 4287: 1998 ,

The object of the invention is completely solved in this way.

The direct application of the first layer of at least one pulp suspension and the indirect application of the at least one further layer of at least one pulp suspension to the belt, which has a mark-free receiving side with a roughness in the range of 0.03 to 1 mm, preferably from 0.05 to 0.2 mm, in particular from 0.06 to 0.1 mm, allows a continuous and process-reliable production of a two- or multi-ply cardboard or packaging paper web, in particular a two or multilayer graphic and preferably equilateral paperboard web with outer functional sides, which have a maximum possible initial smoothness and had no contact with a sieve. The emergence of markings (top / bottom), such as wire marks, and leaching of fines and / or fillers in the produced two- or multi-ply cardboard or packaging paper web, in particular the produced two- or multi-layer graphic and preferably uniform board web is both this largely avoided on the upper side and underside. In addition, an improved appearance, in particular gloss, brightness, whiteness and color in the produced two- or multi-ply cardboard or packaging paper web, in particular the produced two- or multi-layer graphic and preferably uniform board web and high strength values, in particular a high bending stiffness (L & W, Taber ) reached.

The at least one band, which has the label-free receiving side with a roughness mentioned, may be impermeable to water, as a result dewatering of the produced two- or multi-ply cardboard or packaging paper web, in particular the produced two- or multi-layer graphic and preferably uniform board web and thus a washout of fines and / or fillers are avoided. Alternatively, the tape having the label-free receiving side with a said roughness, also be permeable, optionally a mark-free and non-woven tape with a PU layer as a functional layer, thereby the dry content of the produced two- or multi-ply cardboard or packaging paper web, in particular to further increase the produced two- or multi-layer graphic and preferably the same-sided board web. The PU layer could in turn be perforated or lasered. Thus, there is only a minimal leaching in this solution, since only a little less water is removed (<5% of the introduced at the headbox amount of water).

The further band for receiving the last, in particular the second or third and made of at least one pulp suspension layer and the transfer and transfer of the same on the first or the second and made of at least one pulp suspension layer already leading band allows Vergautschung such that the top and bottom have no screen marks. One reason for this is that the at least two headboxes are not all aligned opposite to the direction of the machine for producing the two- or multi-ply cardboard or packaging paper web, in particular the two- or multi-layered graphic and preferably the same-sided board web and another band is used.

In a preferred embodiment of the invention it is provided that the further band is formed as a last, in particular the second or third and made of at least one pulp suspension layer receiving transfer ribbon, which is the last, especially the second or third and made of at least one pulp suspension Situation picks up and transfers to the already formed position last, in particular aufgautscht.

As a result, the two-layer or multi-layer cardboard or packaging paper web to be produced, in particular the graphic and preferably equilateral cardboard web, is formed by two layers of two or more layers, wherein one layer, in particular the upper second layer, is transferred to a transfer belt and then transferred to the other layer. in particular, the lower first layer is puffed up. The two layers can be formed separately with about 50% / 50% by weight.

Furthermore, an applicator device is preferably provided for applying at least one binder between the two layers to be rubberized, each comprising at least one fibrous stock suspension. As a result, the quality, in particular the layer strength and the security of Vergautschung be increased significantly. As a binder, basically all known binders can be used.

The top, before it comes to merging with the insert, so the middle layer, vergautscht before the contact point with the other label-free tape and then with a preferably adjustable Gautschelement, preferably a Gautschwalze or a Gautschschuh to the pad or middle layer brought. The respective Vergautschung can be carried out in total without any disturbance. The three layers can be formed separately with about 20% / 60% / 20% by weight. Furthermore, all forming units for producing a single layer of at least one pulp suspension are preferably arranged above the belt for receiving and continuing the at least two layers produced from at least one pulp suspension. Also, all layers produced from at least one pulp suspension are preferably transferred directly and / or indirectly to the belt by means of a rubber element, in particular a couch roll or a rubber shoe.

In both preferred embodiments, the preferably adjustable rubber element, in particular the couch roll or the rubber shoe produces a belt pressure in the range from 0.2 to 50 kPa, preferably from 1 to 10 kPa, in particular from 3 kPa, due to an immersion in the belt. This can be vergautscht with a long and low pressure pulse. The preferably adjustable rubber element, in particular the couch roll or the rubber shoe, also generates a line load of 1 to 10 kN / m, preferably 3 to 8 kN / m, in particular 4 to 6 kN / m, by means of a counter-roller. This can be vergautscht with a suitable short pressure pulse.

The preferably adjustable rubber element, in particular the Gautschwalze or the rubber shoe preferably has both at least a suction (holding) zone as well as at least one downstream blowing (detachment) zone. It can have an adjustable immersion depth of 0 to 300 mm, preferably 50 to 150 mm, in particular 80 mm, and an adjustable zone position. The negative pressure formed in the suction (holding) zone may have a value of 2 to 40 kPa, preferably 5 to 30 kPa, in particular 15 kPa, whereas the overpressure formed in the blowing (detachment) zone has a value from 0.2 to 20 kPa, preferably from 1 to 10 kPa, in particular from 1.5 kPa. Moreover, the couch roll may have an open area between 20 and 75%. Before veneering the layers, a strong bonding agent may be applied to increase the ply strength. Instead of the couch roll can also be a stationary guide element with built-suction or / and blowing function can be used. This stationary guide element may have a ceramic coating and again an open and preferably slotted area between 20 and 75%.

Such a Gautschelement is for example from the document DE 100 25 896 A1 The content of which is hereby made the subject of the present description.

In both preferred embodiments, at least two screens of a forming unit should preferably be a wire. Of course, all screens of the forming units of the sheet forming apparatus according to the invention may be long wires. As a result, thanks to the further mark-free tape is achieved that the later outer functional side of the produced two- or multi-ply cardboard or packaging paper web, in particular the produced two- or multi-layer graphic and preferably equilateral paperboard web no marks (top / bottom), such as wire marks, and no Has leaching of fine and / or fillers.

Furthermore, if three-ply, one of the forming units preferably has an additional upper sieve comprising a upper sieve suction box. As a result, a sufficient dewatering capacity can be made available for a middle layer with a high specific tonnage.

Also, at least one forming unit is preferably designed and / or operated such that the pulp suspension fed into it by means of a headbox has a residence time between jet impact point and the preferably adjustable rubber element, in particular the couch roll or the rubber shoe in a range from 0.01 to 3.0 s , preferably from 0.1 to 2.5 s, in particular from 0.1 to 2.0 s. Within these areas, a secure Vergautschung the layers of each at least one pulp suspension can be guaranteed.

Furthermore, a preferably regulated wet vacuum is preferably arranged in front of at least one preferably adjustable rubber element, in particular a couch roll or a rubber shoe, for further dewatering of the at least one layer passed from at least one pulp suspension. With such a wet vacuum cleaner, which may have a vacuum in the range of 5 to 65 kPa, the optimum dry content of at least one passing layer of at least one pulp suspension can be easily adjusted for safe Vergautschung.

Of course, at least one headbox of the sheet forming apparatus according to the invention may be a multilayer headbox. This multi-layer headbox can be charged with at least two different substances or partial streams of different composition for different layers. Also, at least one pulp suspension fed through a headbox may have a consistency in the range of 0.1 to 1.5%, preferably 0.5 to 1.2%, in particular 0.8%.

Furthermore, preferably at least one preferably adjustable rubber element, in particular a couch roll or a rubber shoe, is arranged an application device for applying a binder between the two layers to be rubberized, each comprising at least one pulp suspension. As a result, the quality, in particular the layer strength and the security of Vergautschung be increased significantly. As a binder, basically all known binders can be used.

The at least one band preferably has a thickness of 0.2 to 20.0 mm, preferably 0.5 to 2.0 mm, in particular 0.8 mm. Too thick a band damages at the deflection points the two- or multi-ply cardboard or packaging paper web to be produced, in particular the two-layered or multilayered graphic and preferably equilateral cardboard web to be produced as a result of overstretching and too thin a belt has too short a service life.

The at least one band of the sheet forming device according to the invention can have a wide variety of structures. Thus, it preferably comprises a preferably reinforced with a thread and / or Fasergelege polyurethane layer or a preferably reinforced with a thread and / or fiber fabric or fabric scrim, wherein the Fibers and / or fibers preferably have at least constituents of nylon, aramid or carbon, or it consists of a preferably corrosion-resistant metal strip, which is provided on the label-free receiving side with a coating, in particular a plastic or thin ceramic coating. Such a coating generally has a good dispensing property of the two- or multi-ply cardboard or packaging paper web to be produced, in particular the two-layered or multi-layered graphic and preferably equal-sided board web to be produced. The band may be endless or at least seamed, but preferred is a seamless embodiment. Also, the band may have been made by laser punching.

Also, the transfer ribbon may have the same properties as the ribbon of the sheet forming apparatus of the present invention.

Regardless of the construction of the band, at least one device known to those skilled in the art may be provided for cleaning the band, in particular a scraper or an HD unit.

Furthermore, a removal device, in particular a press felt leading pickup roller for removing the consisting of at least two layers of each at least one pulp suspension two- or multi-ply cardboard or packaging paper web, in particular two- or multi-layered graphic and preferably the same paperboard web of the band is provided , wherein between the removal device, in particular the pickup roller and the at least two layers of each at least one pulp suspension existing two- or multi-ply cardboard or packaging paper web, in particular two- or multi-layer graphic and preferably equilateral paperboard web, a gusset is formed. At least one device for the preferably controlled or regulated introduction of steam into the gusset is provided here. The introduction of steam in the gusset provides the advantage of a simple and largely trouble-free web removal from the tape.

Also, a release agent, which preferably has hydrophobic properties, may be applied to the tape. The release agent may also be produced on a silicone basis and / or be applied with an applicator, in particular a spray tube, wherein the applicator is preferably placed on the breast roll of the band section. Alternatively or additionally, thermal energy may also be applied to the upper side of the layer and / or the tape, for example by means of IR, hot air or microwave.

The guided on a belt and consisting of layers of at least one pulp suspension two- or multi-ply cardboard or packaging paper web, in particular two- or multi-layer graphic and preferably equilateral paperboard can preferably be performed by at least one press roller pair having and one side felted press, which preferably adjustable pressing force in the range of 5 to 80 kN / m, preferably from 10 to 50 kN / m, in particular from 25 to 40 kN / m. By this pre-pressing a higher dry content in the produced two- or multi-ply cardboard or packaging paper web, in particular the produced two- or multi-layer graphic and preferably equal-sided board web is produced for the pickup, which significantly improves the web delivery.

Here, the band leading press roll may have a plastic cover. The other, the press felt leading press roll can be provided with a storage volume, in particular creases, perforations, blind holes or the like. Also, the press may have a press plane which is inclined at an angle of ≥ 10 °, preferably of ≥ 15 °, in particular of ≥ 20 °, to the vertical. With this geometry, the press water can be safely removed and thus a rewetting of the produced two- or multi-ply cardboard or packaging paper web, in particular the produced two- or multi-layer graphic and preferably equilateral paperboard web can be avoided.

• – EP 1 072 721 A2 („Single NFP”);
• – EP 1 077 283 B1 („Tandem NFP”);
• – EP 1 048 780 B1 („Tandem NFP”);
• – EP 1 316 641 B1 („3. Presse”);
• – EP 1 749 926 B1 („DuoCentri”); und
• – DE 10 2004 003 674 A1 („DuoCentri plus 4. Presse”).

A press having at least one press roller pair and felted on one side is disclosed, for example, in the following publications:

• - EP 1 072 721 A2 ("Single NFP");
• - EP 1 077 283 B1 ("Tandem NFP");
• - EP 1 048 780 B1 ("Tandem NFP");
• - EP 1 316 641 B1 ("3rd Press");
• - EP 1 749 926 B1 ( "DuoCentri"); and
• - DE 10 2004 003 674 A1 ("DuoCentri plus 4th Press").

The relevant content of these publications is hereby made the subject of the present description.

The press felt of the single-felted press may have a dry weight of ≥ 500 g / m ² , preferably of 1500 g / m ^2, in particular of 2000 g / m ² , and at least one device known to the person skilled in the art for cleaning the press felt, in particular a pipe sucker be provided. In addition, at least one press roll can be doctored by means of at least one scraper device known to the person skilled in the art. And in front of the press at least one can be the highest position be provided at least one pulp suspension spraying and preferably adjustable steam blower box. Of course, at least one press roll may be formed as a deflection compensating roll known to those skilled in the art.

The sheet forming apparatus according to the invention is also particularly suitable for use in a machine for producing a two- or multi-ply cardboard or packaging paper web, in particular a two-layered or multi-layered graphic and preferably equilateral cardboard web of at least two fibrous stock suspensions. Further features and advantages of the invention will become apparent from the following description of several preferred embodiments with reference to the drawings.

Show it

1 a schematic partial side view of a machine for producing a two-ply cardboard or packaging paper web, in particular a two-ply graphic and preferably equilateral paperboard web with a first preferred embodiment of a sheet forming apparatus according to the invention;

2 a schematic partial side view of a machine for producing a three-ply cardboard or packaging paper web, in particular a three-ply graphic and preferably equilateral paperboard web with a second preferred embodiment of a sheet forming apparatus according to the invention;

3 a schematic detail of the in the 2 illustrated second preferred embodiment of a sheet forming apparatus according to the invention;

4 a schematic partial side view of a machine for producing a two-ply cardboard or packaging paper web, in particular a two-ply graphical and preferably equilateral paperboard web with a third preferred embodiment of a sheet forming apparatus according to the invention;

5 a schematic partial side view of a machine for producing a two-ply cardboard or packaging paper web, in particular a two-ply graphic and preferably equilateral paperboard web with a fourth preferred embodiment of a sheet forming apparatus according to the invention; and

6 a schematic partial side view of a machine for producing a two-ply cardboard or packaging paper web, in particular a two-ply graphical and preferably equilateral paperboard web with a fifth preferred embodiment of a sheet forming apparatus according to the invention.

The 1 shows a schematic partial side view of a machine 100 for producing a two-ply cardboard or packaging paper web 200 , in particular a two-ply graphic and preferably equilateral paperboard web with a sheet forming device 1 ,

The two-ply cardboard or packaging paper web 200 , in particular the two-ply graphic and preferably equilateral paperboard web is made of two or more, preferably different pulp suspensions 2 produced. The differences in the pulp suspensions 2 For example, in composition, weight and the like, the differences may be very small.

The illustrated sheet forming apparatus 1 includes two each at least one headbox 4.1 . 4.2 for feeding the respective pulp suspension 2 , at least one sieve 5.1 . 5.2 and several, preferably different and known in the art dewatering elements 6 having forming units 3.1 . 3.2 for producing a single layer L.1, L.2 from at least one pulp suspension 2 ,

Furthermore, the illustrated sheet forming apparatus comprises 1 a band 7 for receiving and continuing the produced layers L.1, L.2 from at least one pulp suspension 2 ,

It is envisaged that this will be the first and at least one pulp suspension 2 prepared layer L.1 immediately and the second of at least one pulp suspension 2 produced layer L.2 indirectly, so indirectly absorbing band 7 a mark free recording page 7.S having a roughness Rt in the range of 0.03 to 1 mm, preferably from 0.05 to 0.2 mm, in particular from 0.06 to 0.1 mm. The roughness Rt is by definition the total height of the roughness profile according to DIN EN ISO 4287: 1998 ,

Also, a release agent R, which preferably has hydrophobic properties, on the tape 7 be applied.

There is another band 8th for receiving the second, thus last and from at least one pulp suspension 2 prepared layer L.2 and for transfer and transfer of the same to the first and from at least one pulp suspension 2 already produced L.1 leading band 7 intended. The other band 8th is in the illustrated embodiment as a the second and from at least one pulp suspension 2 prepared layer L.2 receiving transfer tape 8.1 educated. As a result, the produced two-ply cardboard or packaging paper web 200 , in particular the two-layered graphic and preferably equilateral cardboard web to be produced, formed by two layers L.1, L.2, one layer L.2, in particular the upper second layer, on a transfer belt 8.1 passed and then aufgautscht to the other layer L.1, in particular the lower first layer. The two layers L.1, L.2 can be formed separately with about 50% by weight each.

Also is an applicator 9 for applying at least one binder 10 between the two layers L.1, L.2 which are to be coated, in each case at least one pulp suspension 2 intended.

In the embodiment of the 1 are the two forming units 3.1 . 3.2 for producing a single layer L.1, L.2 from at least one pulp suspension 2 above the band 7 for receiving and continuing the produced layers L.1, L.2 from at least one pulp suspension 2 arranged. Here are all produced layers L.1, L.2 from at least one pulp suspension 2 by means of a respective rubber element 11.1 . 11.2 , in particular a Gautschwalze or a rubber shoe to the band 7 to hand over. Of course, one of the two forming units 3.1 . 3.2 , in particular the forming unit 3.1 for producing the layer L.1 below the band 7 for receiving and continuing the produced layers L.1, L.2 from at least one pulp suspension 2 be arranged to the total length of the sheet forming device 1 to reduce.

Furthermore, both screens are 5.1 . 5.2 the forming units 3.1 . 3.2 for producing a single layer L.1, L.2 from at least one pulp suspension 2 a wire. In the present embodiment, the two sieves 5.1 . 5.2 the two forming units 3.1 . 3.2 corresponding long sieves.

It is at least a forming unit 3.1 . 3.2 designed and / or operable so that in them by means of a headbox 4.1 . 4.2 fed pulp suspension 2 a residence time 2.t between beam impact point 2.P and the preferably adjustable rubber element 11.1 . 11.2 , in particular the skin roll or the rubber shoe in a range of 0.01 to 3.0 s, preferably from 0.1 to 2.5 s, in particular from 0.1 to 2.0 s.

Furthermore, the respective preferably adjustable rubber element is 11.1 . 11.2 , in particular the couch roll or the rubber shoe at least one mononuclear, preferably mehrzonig with different under and / or overpressures, preferably in the range of 0 kPa to 50 kPa, in particular from 10 kPa to 20 kPa, controllable or controllable acted upon.

And before the first preferably adjustable Gautschelement 11.1 , in particular the first skin roller or the first rubber shoe is a preferably controlled and known to the expert wet vacuum 12 for further dewatering or for setting the optimum dry content in order to vergautschung the passing layer L.1 from at least one pulp suspension 2 arranged. Of course, at least one headbox 4.1 . 4.2 the sheet forming apparatus according to the invention 1 be a multi-layer headbox. This multi-layer headbox can be charged with at least two different substances or partial streams of different composition for different layers. Also, at least one through a headbox 4.1 . 4.2 fed pulp suspension 2 a consistency in the range of 0.1 to 1.5%, preferably from 0.5 to 1.2%, in particular of 0.8%.

The ribbon 7 the sheet forming apparatus according to the invention 1 has a thickness 7.d. from 0.2 to 20.0 mm, preferably from 0.5 to 2.0 mm, in particular from 0.8 mm.

Also, the band can 7 own a variety of structures. Thus, it preferably comprises a preferably reinforced with a thread and / or Fasergelgelge polyurethane layer or preferably reinforced with a thread and / or fiber fabric or scrim, wherein the threads and / or fibers preferably comprise at least components of nylon, aramid or carbon, or it consists of a preferably corrosion-resistant metal band, which on the label-free receiving side 7.S is provided with a coating, in particular a plastic or thin ceramic coating.

Regardless of the structure of the band 7 can at least one known to the expert device 13 for cleaning the tape 7 , Be provided in particular a scraper or an HD unit.

At the end of the sheet forming device 1 is made of layers L.1, L.2 from at least one pulp suspension 2 existing two-ply cardboard or packaging paper web 200 , in particular two-ply graphic and preferably equilateral paperboard web of a via a removal device 14 , in particular a pickup roller 14.1 guided press felt 15 in a known manner decreased. Subsequently, the two-ply cardboard or packaging paper web 200 , in particular two-ply graphic and preferably equilateral paperboard web on the underside of a press felt 16 recorded ("double felt guide").

The 2 shows a schematic partial side view of a machine 100 for producing a three-ply cardboard or packaging paper web 300 , in particular a three-ply graphic and preferably equilateral paperboard web with a sheet forming device 1 ,

The three-ply cardboard or packaging paper web 300 , in particular the three-ply graphic and preferably equilateral paperboard web is made of three or more, preferably different pulp suspensions 2 produced. The differences in the pulp suspensions 2 For example, in composition, weight and the like, the differences may also be very small.

The in the 2 illustrated sheet forming device 1 is basically an extension of in the 1 illustrated sheet forming device 1 , so that is hereby referring to the description of 1 Reference is made and referred.

The extension is that between the two forming units 3.1 . 3.2 for producing a single layer L.1, L.2 from at least one pulp suspension 2 another third, a headbox 4.3 and a sieve 5.3 having forming unit 3.3 for producing a single layer L.3 from at least one pulp suspension 2 is arranged. The third forming unit 3.3 here has an additional and a known to those skilled Obersiebsaugkasten 17 comprehensive upper sieve 5.22 on.

Here again, all layers produced L.1, L.2, L.3 from at least one pulp suspension 2 by means of a respective rubber element 11.1 . 11.2 . 11.3 , in particular a Gautschwalze or a rubber shoe to the band 7 to hand over.

In the embodiment of the 2 are the three forming units 3.1 . 3.2 . 3.3 for producing a single layer L.1, L.2, L.3 from at least one pulp suspension 2 above the band 7 for receiving and continuing the produced layers L.1, L.2, L.3 from at least one pulp suspension 2 arranged. Here are all produced layers L.1, L.2, L.3 from at least one pulp suspension 2 with three or two preferably adjustable rubber elements 11.1 . 11.2 . 11.3 respectively. 11.1 . 11.2 , in particular nappies or rubber shoes to the band 7 to hand over. Of course, one of the three forming units 3.1 . 3.2 , in particular the forming unit 3.1 for producing the layer L.1 below the band 7 for receiving and continuing the produced layers L.1, L.2, L.3 from at least one pulp suspension 2 be arranged.

It is at least a forming unit 3.1 . 3.2 . 3.3 designed and / or operable so that in them by means of a headbox 4.1 . 4.2 . 4.3 fed pulp suspension 2 a residence time 2.t between beam impact point 2.P and the preferably adjustable rubber element 11.1 . 11.2 , in particular the skin roll or the rubber shoe in a range of 0.01 to 3.0 s, preferably from 0.1 to 2.5 s, in particular from 0.1 to 2.0 s.

Furthermore, the respective preferably adjustable rubber element is 11.1 . 11.2 . 11.3 respectively. 11.1 . 11.2 , in particular the couch roll or the rubber shoe at least one single, preferably mehrzonig with different under and / or overpressures, preferably in the range of 0 kPa to 50 kPa, in particular from 10 kPa to 20 kPa, controllable or controllable acted upon.

And before the first preferably adjustable Gautschelement 11.1 , in particular the first skin roller or the first rubber shoe is a preferably controlled and known to the expert wet vacuum 12 for further dewatering or for setting the optimum dry content in order to vergautschung the passing layer L.1 from at least one pulp suspension 2 arranged. Of course, at least one headbox 4.1 . 4.2 . 4.3 the sheet forming apparatus according to the invention 1 a multi-layer headbox, preferably the headboxes 4.1 and 4.2 , The single multi-layer headbox can be charged with at least two different substances or partial streams of different composition for different layers. Also, at least one through a headbox 4.1 . 4.2 . 4.3 fed pulp suspension 2 a consistency in the range of 0.1 to 1.5%, preferably from 0.5 to 1.2%, in particular of 0.8%.

The ribbon 7 the sheet forming apparatus according to the invention 1 has a thickness 7.d. from 0.2 to 20.0 mm, preferably from 0.5 to 2.0 mm, in particular from 0.8 mm.

Also, the band can 7 own a variety of structures. Thus, it preferably comprises a preferably reinforced with a thread and / or Fasergelege polyurethane layer or a preferably reinforced with a thread and / or fiber fabric or scrim, wherein the threads and / or or fibers preferably have at least constituents of nylon, aramid or carbon, or it consists of a preferably corrosion-resistant metal band, which on the label-free receiving side 7.S is provided with a coating, in particular a plastic or thin ceramic coating.

Regardless of the structure of the band 7 can at least one known to the expert device 13 for cleaning the tape 7 , Be provided in particular a scraper or an HD unit.

At the end of the sheet forming device 1 is made of layers L.1, L.2, L.3 from at least one pulp suspension 2 existing three-ply cardboard or packaging paper web 300 , in particular three-ply graphic and preferably equilateral paperboard web of a via a removal device 14 , in particular a pickup roller 14.1 guided press felt 15 removed in a known manner. Subsequently, the three-ply cardboard or packaging paper web 300 , in particular the three-ply graphic and preferably equilateral paperboard web on the underside of a press felt 16 recorded ("double felt guide").

The 3 shows a schematic detail of the in the 2 illustrated second preferred embodiment of a sheet forming apparatus according to the invention 1 , The schematic detail representation basically represents the Gautschzone in detail.

The preferably adjustable rubber element 11.3 , in particular the couch roll or the rubber shoe, due to a dipping in the band course of the band 7 a tape print 7.p in the range from 0.2 to 50 kPa, preferably from 1 to 10 kPa, in particular from 3 kPa. Alternatively, it can by means of a counter-roller 11.4 a line load 7.L from 1 to 10 kN / m, preferably from 3 to 8 kN / m, in particular from 4 to 6 kN / m. also a combination of tape printing 7.p and line load 7.L is advantageous under certain conditions.

The illustrated and preferably adjustable Gautschelement 11.2 is as a couch roll 11.3 formed in the function of a Gautschelements both a suction (holding) zone 11.3S as well as a downstream blowing (detachment) zone 11.3b having. This couch roll 11.3 has an adjustable immersion depth 11.3t from 0 to 300 mm, preferably from 50 to 150 mm, in particular from 80 mm, and an adjustable zone position 11.3L on. The one in the suction (holding) zone 11.3S formed negative pressure has a value of 2 to 40 kPa, preferably from 5 to 30 kPa, in particular of 15 kPa, whereas formed in the blowing (detachment) zone overpressure has a value of 0.2 to 20 kPa, preferably from 1 to 10 kPa, in particular of 1.5 kPa. Moreover, owns the Gautschwalze 11.3 an open area 11.3F between 20 and 75%. Before veneering the layers, a strong bonding agent may be applied to increase the ply strength. Instead of the couch roll can also be a stationary guide element with built-suction or / and blowing function can be used. This guide element may have a ceramic coating and again an open and preferably slotted surface between 20 and 75%.

The 4 shows a schematic partial side view of another machine 100 for producing a two-ply cardboard or packaging paper web 200 , in particular a two-ply graphic and preferably equilateral paperboard web with a sheet forming device 1 ,

The two-ply cardboard or packaging paper web 200 , in particular the two-ply graphic and preferably equilateral paperboard web is made of two, preferably different pulp suspensions 2 produced. The differences in the pulp suspensions 2 For example, in composition, weight and the like, the differences may also be very small.

Since the structure of this 4 at least partially illustrated machine 100 for producing a two-ply cardboard or packaging paper web 200 , in particular a two-ply graphic and preferably equilateral paperboard web substantially the structure of in the 1 illustrated machine 100 for producing a two-ply cardboard or packaging paper web 200 , in particular a two-ply graphic and preferably equilateral paperboard web, is hereby incorporated in the description of the 1 Referenced and referenced.

It is again provided that the first layer L.1 of at least one pulp suspension 2 directly and the second layer L.2 from at least one pulp suspension 2 indirectly recording band 7 a mark free recording page 7.S having a roughness Rt in the range of 0.03 to 1 mm, preferably from 0.05 to 0.2 mm, in particular from 0.06 to 0.1 mm.

It is now a take-off device 14 , in particular a press felt 15 leading pickup roller 14.1 for the removal of the two layers L.1, L.2 each of at least one pulp suspension 2 existing two-ply cardboard or packaging paper web 200 , in particular two-ply graphic and preferably equilateral paperboard web of the tape 7 intended.

Between the take-off device 14 , in particular the pickup roller 14.1 and from two layers L.1, L.2 each of at least one pulp suspension 2 existing two-ply cardboard or packaging paper web 200 , in particular two-ply graphic and preferably equilateral paperboard web is a gusset 18 educated. And it is at least one device 19 for the preferably controlled or regulated introduction of steam 20 in the gusset 18 intended.

Also, a release agent R, which preferably has hydrophobic properties, on the tape 7 be applied. The release agent can also be produced on a silicone basis and / or be applied with an applicator A, in particular a spray tube, wherein the applicator is preferably placed on the breast roll of the band section. Alternatively or additionally, thermal energy can also be used 21 on the top of the sheet and / or the band 7 be applied, for example, medium IR, hot air or microwave.

The 5 shows a schematic partial side view of another machine 100 for producing a two-ply cardboard or packaging paper web 200 , in particular a two-ply graphic and preferably equilateral paperboard web with sheet forming device 1 ,

The two-ply cardboard or packaging paper web 200 , in particular the two-ply graphic and preferably equilateral paperboard web is made of two or more, preferably different pulp suspensions 2 produced. The differences in the pulp suspensions 2 For example, in composition, weight and the like, the differences may also be very small.

The in the 5 illustrated sheet forming device 1 is basically the same in the 1 illustrated sheet forming device 1 , so that is hereby referring to the description of 1 Reference is made and referred. Only as a transfer band 8.1 trained and the second and at least one pulp suspension 2 prepared layer L.2 receiving band 8th has a slightly changed band progression.

At the end of the sheet forming device 1 is made of layers L.1, L.2 from at least one pulp suspension 2 existing two-ply cardboard or packaging paper web 200 , in particular two-ply graphic and preferably equilateral paperboard web of a via a removal device 14 , in particular a pickup roller 14.1 guided press felt 15 removed in a known manner. Subsequently, the two-ply cardboard or packaging paper web 200 , in particular the two-ply graphic and preferably equilateral paperboard web on the underside of a press felt 16 recorded ("double felt guide").

Then it's on the press felt 16 Guided and two-ply cardboard or packaging paper web 200 , in particular the two-ply graphic and preferably equilateral paperboard web by a press roller pair 22.P having and double felted press 22 led the type Breitnip press, which is a preferably adjustable pressing force 22.K in the range from 500 to 1200 kN / m, preferably from 800 to 1200 kN / m, in particular from 1000 kN / m.

The first press 22 is another, a pair of press rolls 23.P having and double felted press 23 downstream of the type Breitnip press.

In principle, every illustrated press 22 . 23 be a part of a press arrangement. Such press concepts are in the already mentioned documents EP 1 072 721 A2 . EP 1 077 283 B1 . EP 1 048 780 B1 . EP 1 316 641 B1 . EP 1 749 926 B1 and DE 10 2004 003 674 A1 sufficiently disclosed.

The press felts 15 . 16 the respective double-felted press 22 . 23 may have a dry weight of ≥ 500 g / m ² , preferably of 1500 g / m ^2, in particular of 2000 g / m ² , and it may be provided at least one known to the expert device for cleaning the single press felt, in particular a pipe sucker. In addition, at least one press roll can be doctored by means of at least one scraper device known to the person skilled in the art. And in front of the press at least one of the top layer of at least one pulp suspension besprühender and preferably controllable steam blower box can be provided. Of course, at least one press roll may be formed as a deflection compensating roll known to those skilled in the art.

Subsequently, the layers L.1, L.2 of at least one pulp suspension 2 existing two-ply cardboard or packaging paper web 200 , in particular the two-ply graphic and preferably equilateral paperboard web, to a dryer section known to the person skilled in the art. Previously, the produced two-ply cardboard or packaging paper web 200 , in particular the two-layered graphic and preferably equilateral cardboard web to be produced by means of an offset press 26 (dashed line) still best surface properties

And the 6 shows a schematic partial side view of a machine 100 for producing a two-ply cardboard or Packaging paper web 200 , in particular a two-ply graphic and preferably equilateral paperboard web with a sheet forming device 1 ,

The two-ply cardboard or packaging paper web 200 , in particular the two-ply graphic and preferably equilateral paperboard web is made of two or more, preferably different pulp suspensions 2 produced. The differences in the pulp suspensions 2 For example, in composition, weight and the like, the differences may also be very small.

The in the 6 illustrated sheet forming device 1 is basically an extension of in the 1 illustrated sheet forming device 1 , so that is hereby referring to the description of 1 Reference is made and referred.

The extension is that on the tape 7 Guided and two-ply cardboard or packaging paper web 200 , in particular the two-ply graphic and preferably equilateral paperboard web by a press roller pair 22.P having and felting on the top 22 guided, which is a preferably adjustable pressing force 22.K in the range from 500 to 1200 kN / m, preferably from 800 to 1200 kN / m, in particular from 1000 kN / m. The the band 7 leading press roll 22.1 has a plastic cover and the other, the press felt 15 leading press roll 22.2 is provided with a known to those skilled storage volume, in particular grooves, perforations, blind holes or the like. The one-sided felted press 22 So has a mark-free underside in the embodiment of the said band 7 or a press roll.

At the end of the sheet forming device 1 is made of layers L.1, L.2 from at least one pulp suspension 2 existing two-ply cardboard or packaging paper web 200 , in particular the two-ply graphic and preferably equilateral paperboard web from one via a take-off device 14 , in particular a pickup roller 14.1 guided press felt 15 removed in a known manner. Subsequently, the two-ply cardboard or packaging paper web 200 , in particular the two-ply graphic and preferably equilateral paperboard web on the underside of a press felt 16 added.

The in the 1 to 6 At least partially illustrated sheet forming devices according to the invention 1 are particularly suitable for use in a machine 100 for producing a two- or multi-ply cardboard or packaging paper web 200 . 300 , in particular a two- or multi-layered graphic and preferably equilateral paperboard web of at least two pulp suspensions 2 ,

This machine 100 may as main groups (sub-processes) at least the sheet forming device according to the invention 1 with a mark free recording page 7.S exhibiting band 7 and with the rest of the band 8th . 8.1 for Vorvergautschung, wet pressing, in particular a double-felted shoe press and another double-felted shoe press with a fully supported web guide, an offset press, a pre-dryer, a size press, a post-dryer section, at least one coater for applying a first curtain line on the bottom, a coater for applying a first curtain line to the top, a coater for applying a first blade line to the bottom, a coater for applying a first blade line to the top, a multi-pin calender and a reel.

The machine 100 Thus, in comparison with known machines on a reduced number of main groups, so for example, a hard-gap calender can be omitted before the coating process. In addition, the machine can 100 depending on the requirements further simplified (no offset press, no hot-work, no steel strip calender, etc.), the investment costs reduced (less complex main groups) and raw material saved (gain in thickness, since no offset press and / or no Heißnipkalander → "Dickenkiller").

• – Erfindungsgemäße Blattbildungsvorrichtung 1 zur Herstellung einer dreilagigen, eine zusätzliche Einlage aufweisenden Karton- oder Verpackungspapierbahn 300, insbesondere einer dreilagigen graphischen und vorzugsweise gleichseitigen Kartonbahn;
• – Erfindungsgemäße Blattbildungsvorrichtung 1 zur Herstellung einer vierlagigen, eine zusätzliche Einlage aufweisenden Karton- oder Verpackungspapierbahn, insbesondere einer vierlagigen graphischen und vorzugsweise gleichseitigen Kartonbahn;
• – Drei Pressen mit einer jeweiligen Doppelfilzführung („Smooth Plus Konzept“) und einer Presse mit Filz/Band (Band unten);
• – Weitere Streichaggregate zur Aufbringung eines Filmstrichs;
• – Weitere Streichaggregat zur Aufbringung eines Vorstrichs (Filmstrich, Simultanstrich) auf die zwei- oder mehrlagige Karton- oder Verpackungspapierbahn, insbesondere die zwei- oder mehrlagige graphische und vorzugsweise gleichseitigen Kartonbahn;
• – Curtain Coater zur Aufbringung eines Zwischenstrichs auf die zwei- oder mehrlagige Karton- oder Verpackungspapierbahn, insbesondere die zwei- oder mehrlagige graphische und vorzugsweise gleichseitige Kartonbahn;
• – Blade Coater für finalen Strich auf Ober- und Unterseite;
• – Hartnip- oder Softnip-Kalander vor dem ersten Strich;
• – Softkalander vor der Aufrollung; und/oder
• – Zwei Softkalander vor der Aufrollung (1 × Unterseite und 1 × Oberseite).

Furthermore, the machine can 100 additionally and / or alternatively have the following main groups:

• - Sheet forming device according to the invention 1 for producing a three-ply carton or packaging paper web having an additional inlay 300 , in particular a three-ply graphic and preferably equilateral paperboard web;
• - Sheet forming device according to the invention 1 for producing a four-ply, an additional insert having cardboard or packaging paper web, in particular a four-ply graphic and preferably the same-sided board web;
• - Three presses with a respective double felt guide ("Smooth Plus Concept") and a press with felt / tape (bottom tape);
• - Additional coating units for the application of a film coating;
• - Additional coating unit for applying a precoat (film coat, simultaneous stroke) on the two- or multi-ply cardboard or packaging paper web, in particular the two- or multi-layer graphic and preferably the same-sided board web;
• - Curtain coater for applying an intermediate line to the two- or multi-ply cardboard or packaging paper web, in particular the two- or multi-layer graphic and preferably the same-sided board web;
• - Blade Coater for final stroke on top and bottom;
• - Hartnip or Softnip calender before the first stroke;
• - Soft calender before reeling; and or
• - Two soft calenders before rewinding (1 × bottom and 1 × top).

In summary, it should be noted that the invention provides a sheet forming apparatus of the aforementioned types, which is the production of a two- or multi-ply cardboard or packaging paper web, in particular a two- or multi-layered graphic and preferably equilateral paperboard web with two outer functional pages has possible initial smoothness, continuously and reliably ensured. The emergence of markings (top / bottom), such as screen marks, and leaching of fines and / or fillers in the produced two- or multi-ply cardboard or packaging paper web, in particular the produced two- or multi-layer graphic and preferably equilateral paperboard is both here largely avoided on the upper side and underside.

LIST OF REFERENCE NUMBERS

1

 A forming apparatus

2

 Fibrous suspension

2.P

 beam spot

2.t

 dwell

3.1

 forming unit

3.2

 forming unit

3.3

 forming unit

4.1

 headbox

4.2

 headbox

4.3

 headbox

5.1

 scree

5.2

 scree

5.22

 top wire

5.3

 scree

6

 dewatering element

7

 tape

7.d.

 thickness

7.p

 band pressure

7.L

 line load

7.S

 Up side

8th

 Another band

8.1

 transfer tape

9

 applicator

10

 binder

11.1

 Gautschelement

11.2

 Gautschelement

11.3

 couch roll; Gautschelement

11.3b

 Wind (peel) Zone

11.3F

 Open area

11.3L

 zone location

11.3S

 Suction (holding) Zone

11.3t

 Immersion depth

11.4

 backing roll

12

 wet vacuum cleaner

13

 Device for cleaning the belt

14

 removal device

14.1

 Pickup roll

15

 press felt

16

 press felt

17

 top wire suction

18

 gore

19

 contraption

20

 steam

21

 Thermal energy

22

 Press

22.1

 press roll

22.2

 press roll

22.K

 pressing force

22.P

 Pair of press rolls

23

 Press

23.1

 press roll

23.2

 press roll

23.K

 pressing force

23.P

 Pair of press rolls

24

 tape

25

 press felt

26

 Offset press

100

 Machine for producing a two- or multi-ply cardboard or packaging paper web, in particular a two- or multi-layer graphic and preferably the same-sided board web

200

 Two-ply cardboard or packaging paper web, in particular two-ply graphic and preferably equilateral paperboard web

300

 Three-ply cardboard or packaging paper web, in particular three-ply graphic and preferably equal-sided board web

A

 applicator

L.1

 First location; top

L.2

 Second location; Bottom; inlay

L.3

 Third location; bottom

R

 release agents

Rt

Roughness according to DIN EN ISO 4287: 1998

QUOTES INCLUDE IN THE DESCRIPTION

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

Cited patent literature

• DE 464278 [0002]
• EP 1262596 A2 [0003]
• DE 10015828 A1 [0004]
• DE 19951928 A1 [0005]
• DE 10025896 A1 [0023]
• EP 1072721 A2 [0038, 0095]
• EP 1077283 B1 [0038, 0095]
• EP 1048780 B1 [0038, 0095]
• EP 1316641 B1 [0038, 0095]
• EP 1749926 B1 [0038, 0095]
• DE 102004003674 A1 [0038, 0095]

Cited non-patent literature

• DIN EN ISO 4287: 1998 [0012]
• DIN EN ISO 4287: 1998 [0053]
• DIN EN ISO 4287: 1998 [0107]

Claims (14)

Sheet forming device ( 1 ) for producing a two- or multi-ply cardboard or packaging paper web ( 200 ; 300 ), in particular a two-layered or multi-layered graphic and preferably equilateral board web of at least two pulp suspensions ( 2 ), at least comprising two each at least one headbox ( 4.1 . 4.2 ; 4.1 . 4.2 . 4.3 ) for feeding the respective pulp suspension ( 2 ), at least one sieve ( 5.1 . 5.2 ; 5.1 . 5.2 . 5.3 ) and several drainage elements ( 6 ) having forming units ( 3.1 . 3.2 ; 3.1 . 3.2 . 3.3 ) for producing a single layer (L.1, L.2, L.1, L.2, L.3) from at least one pulp suspension ( 2 ) and a band ( 7 ) for receiving and continuing the at least two produced layers (L.1, L.2, L.1, L.2, L.3) from in each case at least one fibrous suspension ( 2 ), characterized in that the first and at least one pulp suspension ( 2 ) (L.1) immediately and the last, in particular the second of at least one pulp suspension ( 2 ) produced position (L.2) indirectly receiving band ( 7 ) a label-free recording page ( 7.S ) having a roughness (Rt) in the range from 0.03 to 1 mm, preferably from 0.05 to 0.2 mm, in particular from 0.06 to 0.1 mm, and in that a further mark-free tape ( 8th . 8.1 ) for receiving the last, in particular the second or third from at least one pulp suspension ( 2 ) and for the transfer and transfer of the same to the first or the second and from at least one pulp suspension ( 2 ) (L.1) is already leading label-free band ( 7 ) is provided. Sheet forming device ( 1 ) according to claim 1, characterized in that the further label-free band ( 8th ) as one the second or third and at least one pulp suspension ( 2 ) produced position-free transfer belt (L.2; L.3) ( 8.1 ) is trained. Sheet forming device ( 1 ) according to claim 2, characterized in that an application device ( 9 ) for applying at least one binder ( 10 ) between the two layers (L.1, L.2, L.1, L.2, L.2, L.3) to be coated, in each case from at least one fibrous suspension ( 2 ) is provided. Sheet forming device ( 1 ) according to one of the preceding claims, characterized in that all the forming units ( 3.1 . 3.2 ; 3.1 . 3.2 . 3.3 ) for producing a single layer (L.1, L.2, L.1, L.2, L.3) from at least one pulp suspension ( 2 ) above the label-free band ( 7 ) for receiving and continuing the at least two produced layers (L.1, L.2, L.1, L.2, L.3) from at least one pulp suspension ( 2 ) and that all the layers produced (L.1, L.2, L.1, L.2, L.3) are each composed of at least one pulp suspension ( 2 ) by means of a preferably adjustable rubber element ( 11.1 . 11.2 ; 11.1 . 11.2 . 11.3 ), in particular a couch roll or a rubber shoe directly and / or indirectly to the label-free tape ( 7 ) be handed over. Sheet forming device ( 1 ) according to claim 4, characterized in that the preferably adjustable rubber element ( 11.1 . 11.2 ; 11.1 . 11.2 . 11.3 ), in particular the couch roll or the rubber shoe due to a dipping in the band course a belt pressure ( 7.p ) in the range from 0.2 to 50 kPa, preferably from 1 to 10 kPa, in particular from 3 kPa, and / or that the preferably adjustable rubber element ( 11.1 . 11.2 ; 11.1 . 11.2 . 11.3 ), in particular the couch roll or the rubber shoe by means of a counter-roller ( 11.4 ) a line load ( 7.L ) of 1 to 10 kN / m, preferably 3 to 8 kN / m, in particular 4 to 6 kN / m. Sheet forming device ( 1 ) according to claim 4 or 5, characterized in that the preferably adjustable rubber element ( 11.1 . 11.2 ; 11.1 . 11.2 . 11.3 ), in particular the couch roll or the rubber shoe both at least one suction (holding) zone ( 11.3S ) as well as at least one downstream blowing (detachment) zone ( 11.3b ) having. Sheet forming device ( 1 ) according to one of the preceding claims, characterized in that one of the forming units ( 3.2 ) an additional and a suction filter box ( 17 ) comprehensive upper sieve ( 5.22 ) having. Sheet forming device ( 1 ) according to one of the preceding claims, characterized in that at least one forming unit ( 3.1 . 3.2 ; 3.1 . 3.2 . 3.3 ) is designed and / or operable in such a way that it is fed into it by means of a headbox ( 4.1 . 4.2 ; 4.1 . 4.2 . 4.3 ) supplied pulp suspension ( 2 ) a residence time ( 2.t ) between beam impact point ( 2.P ) and the preferably adjustable rubber element ( 11.1 . 11.2 ; 11.1 . 11.2 . 11.3 ), in particular the skin roller or the rubber shoe in a range of 0.01 to 3.0 s, preferably from 0.1 to 2.5 s, in particular from 0.1 to 2.0 s. Sheet forming device ( 1 ) according to any one of the preceding claims, characterized in that in front of at least one preferably adjustable ( 11.1 . 11.2 ; 11.1 . 11.2 . 11.3 ), in particular a Gautschwalze or a Gautschschuh a preferably regulated wet vacuum ( 12 ) for further dewatering of the at least one passing layer (L.1) from at least one pulp suspension ( 2 ) is arranged. Sheet forming device ( 1 ) according to any one of the preceding claims, characterized in that in front of at least one preferably adjustable ( 11.1 . 11.2 ; 11.1 . 11.2 . 11.3 ), in particular a couch roll or a rubber shoe an application device ( 9 ) for applying a binder ( 10 ) between the two layers (L.1, L.2, L.1, L.2, L.2, L.3) to be coated, in each case from at least one fibrous suspension ( 2 ) is arranged. Sheet forming device ( 1 ) according to one of the preceding claims, characterized in that the label-free band ( 7 ) a thickness ( 7.d. ) from 0.2 to 20.0 mm, preferably from 0.5 to 2.0 mm, in particular from 0.8 mm. Sheet forming device ( 1 ) according to one of the preceding claims, characterized in that the label-free band ( 7 ) comprises a polyurethane layer which is preferably reinforced with a thread and / or fiber layer, or in that the label-free strip ( 7 ) comprises a fabric or scrim, preferably reinforced with a thread and / or fiber web, wherein the threads and / or fibers preferably comprise at least constituents of nylon, aramid or carbon, or in that the label-free tape ( 7 ) consists of a preferably corrosion-resistant metal strip, which on the label-free receiving side ( 7.S ) is provided with a coating, in particular a plastic or thin ceramic coating. Sheet forming device ( 1 ) according to one of the preceding claims, characterized in that a take-off device ( 14 ), in particular a press felt ( 15 ) leading pickup roller ( 14.1 ) for the removal of at least two layers (L.1, L.2, L.1, L.2, L.3) from in each case at least one fibrous suspension ( 2 ) existing two- or multi-ply cardboard or packaging paper web ( 200 ; 300 ), in particular a two-layered or multi-layered graphic and preferably equilateral cardboard web of the label-free tape ( 7 ) is provided, wherein between the removal device ( 14 ), in particular the pickup roller ( 14.1 ) and of at least two layers (L.1, L.2, L.1, L.2, L.3) of in each case at least one fibrous suspension ( 2 ) existing two- or multi-ply cardboard or packaging paper web ( 200 ; 300 ), in particular a two- or multi-layered graphic and preferably equilateral cardboard web, a gusset ( 18 ) is formed, and that at least one device ( 19 ) for the preferably controlled or regulated introduction of steam ( 20 ) in the gusset ( 18 ) is provided. Machine ( 100 ) for producing a two- or multi-ply cardboard or packaging paper web ( 200 ; 300 ), in particular a two-layered or multi-layered graphic and preferably equal-sided board web of at least two fibrous stock suspensions ( 2 ), characterized in that it comprises at least one sheet forming device ( 1 ) according to one of the preceding claims.

Images