FI111020B - Method in film press and film press - Google Patents

Abstract

The invention concerns a method in a film press, in which the web(W) is coated or surface-sized from at least one side. In the film press (10) a film press nip (N) is formed between a first and a second film press roll (12, 16), and the coating agent or surface size is applied as a film (F1, F2) at least onto the face of the first film press roll (12). The web (W) is passed through the film press nip (N) so that in said nip (N) the coating agent or surface size is transferred from the face (12) of the film press roll onto the web (W). After the film press nip (N), the web (W') follows the face of the first film press roll (12), from which it is separated for a treatment of the coated or surface-sized web (W') following after the film press. According to the invention, the web (W') is separated in the desired geometry from the first film press roll (12) by means of a separation control device that has been fitted at the outlet side of the film press nip (N) at the opposite side of the web (W') in relation to the first film press roll, which separation control device is preferably a separation roll or cylinder (23).

Description

5, 111020

The present invention relates to a method of film-forming and surface-gluing on at least one side by forming a film-pressing nip between at least one of the first and second film-forming rolls and the end of the first and second film-forming rolls on the surface of the film press roll, wherein the web is passed through the film press nip so that the coating material or surface adhesive is transferred from the film press roll to the web, whereupon the film follows the surface of the first film press roll from which it is detached.

The invention also relates to a film press arranged to coat or surface glue on at least one side of the web comprising a film punch cross formed by a first and a second film press roll, at least one of which film press rolls is provided with a coating device for the web being arranged to pass through a film press nip so that the coating material or surface adhesive in said nip moves from the surface of the film press roll 25 to the web, after which the film is adapted to follow the in film adhesive presses, the application of glue or paste to paper is performed as desired paper: Coat only on one or both sides, apply coatings of the desired thickness on one or both rolls of the film adhesive crossing roller, whereby these overlay 35 films are transferred to the paper web through the nip press rolls. Generally, the rolls of film adhesive presses f are provided with a resilient coating and the application to the roll surface may be accomplished using a known blade-top, roller or smooth nozzle or similar nozzle assembly. Nowadays, increasing speeds are being sought in paper machines, and thus also in associated film adhesive presses, whereby increasing this speed, in particular in film adhesive presses 5, has introduced a new problem, particularly when spraying with coating agent on the back side of the press nip. The misting is due to cracking of the coating film in the film press when the film is removed from the film roll. Thus, the coating film splits so that most of the film remains in the paper while a smaller portion 10 remains on the surface of the film roll. Excessive fogging in itself can be quite a problem, which is reflected in the degraded quality of the coating on the coated paper. The problem also arises from the fact that even less mist builds up on the machine structures and drips onto the paper web, ruining the quality of the paper, or that the mist spreads to the room air. Another significant problem in film presses is how to control the web release line from the film press roll, which is followed by the web after the nip. In known solutions, the release point of the web from the roll does not remain the same, but the release point "walks" along the surface of the roll. When the release point is normally followed by a long free tension, fluttering has occurred in the web, which may have resulted in web breaks and their known harmful consequences. In addition, the machine direction and also the cross direction of the web release point cause a serious fogging problem.

Since the problems described above have not become significant until 4 web speeds have been increased, the prior art contains very few solutions which can eliminate these problems or even significantly reduce them.

30 Certain prior art solutions exist, of course, and may be mentioned **, for example, in U.S. Patent No. 90,266, which attempts to prevent fog formation by using a special coat structure. Similarly, Finnish Patent No. 93,243 discloses a solution in which fog formation is not prevented per se, but this mist is collected by means of mechanical devices arranged on the back side of the nip 35, or at least it is sought to be collected so that it cannot penetrate other structures. Therefore, the prior art does not provide a solution for fog formation itself. Finnish Patent No. 101092 further seeks to improve the solutions of the above-mentioned patents, and thus the process described in this patent intervenes in the formation of the coating agent mist itself, in that the solution according to the patent seeks to prevent the formation

In the prior art, reference is also made to U.S. Patent No. 5,496,406, in which, in a film press, the web is supported after the nip by air support beams disposed so that the bar closer to the nip supports the web on the side of the roll followed by the web.

It is an object of the present invention to provide a novel improved solution for controlling the release line of the web and for problems of formation of a coating agent or surface adhesive and of spray application. To achieve this object, the method according to the invention is essentially characterized in that the web is removed in the desired geometry from the first film press roll to the back side of the film press nip by means of a release control device disposed on the opposite side of the first film press roll.

The film press according to the invention, for its part, is characterized by the fact that the film press is provided with a release control device disposed on the back side of the film press nip, opposite the first film press roll, arranged to release the web from the first film press.

Most preferably, in the method and film press of the invention, the release roller or cylinder is used as a release control device. The release roller or cylinder can nip contact with the first film press roll and its web to transfer the web from the first film press roll to the release roll or roll. On the other hand, in the method and in the 4111020 film press using the method, the release roll or cylinder can be arranged at a distance from the first film press roll to a surface of the release film or cylinder of 0-1000 mm, preferably 0-600 mm. Most preferably, however, the release roll or cylinder 5 is movably disposed within the film press so that its distance from the surface of the first film press roll can be varied during travel to find the optimum web release point.

It is advantageous to place the release roll or cylinder on the back side of the film press nip 10 so that it fills the opening of the film press, whereby the release roll or cylinder collects on its surface the coating or surface sizing spray caused by the film press. Further, it is important to prevent the coating formed on the surface of the web from sticking the coating agent or surface adhesive to the surface of the release roll 15 or cylinder.

The major advantages of the invention over the prior art solutions are that the invention aims at keeping the web as well supported as possible after the film press nip and at the same time not merely aiming to prevent fog formation but to completely prevent fog formation. Therefore, when there is no mist at all, there is no problem. In the invention, the web release line is kept under control by fully supporting the web, or at least keeping the free tension very low, thereby preventing cracking of the coating V 25 and preventing fluttering and shaking of the release line. Utilizing air technology, in particular an air turning device based on the coanda phenomenon, the web in the desired geometry follows the shape of the air turning device from the roll. The release line and / or film splitting geometry is thus well controlled. The mist formation is thus substantially eliminated and the runnability is improved. Other advantages and features of the invention will become apparent from the following detailed description of the invention.

The invention will now be described, by way of example, with reference to the figures in the accompanying drawing 35.

«5 111020

Figures 1 and 2 are full schematic side views of a film press using the method of the invention. Figures 1 and 2 illustrate alternative embodiments of the method.

Figures 3A, 3B and 3C further illustrate further embodiments of the method and adhesive press of the invention.

In Figures 1 and 2 of the drawing, the film press is generally designated by the reference numeral 10. The film press 10 comprises a film press body 11 mounted on a substrate C with film press rolls 12,16 mounted in a conventional manner. The bearing housing 13 of the first film press roll, or lower roll, is mounted directly on the film press body 11 and rigidly secured thereto. In turn, the bearing housing 17 of the second film press roll, or upper roller, is mounted on a load arm 19 pivotally pivoting f on the air press body 11 with a transverse pivot axis 15 of the machine. and the film roll nip formed by the top roll 16. Either of the film roll rolls 12,16, 20 preferably the top roll 16, or alternatively both of the film press rolls 12,16 may be deflection compensated rolls so as to obtain the desired N pressure across the machine.

In the solutions of Figures 1 and 2, the film press 10 is intended for the coating or surface sizing of the web 25 and thus each film press roll 12,16 is provided with coating devices 15,21 for applying and leveling the adhesive films or the like. filler films F1, F2 on the surface of the respective rolls 12.16. However, the invention can also be applied to the coating or surface sizing of the web W on only 30 of the other side, whereby only one of the film press rolls 12,16 »** · should be provided with coating devices 15,21. On one side, in the coating or surface sizing, in the arrangement of Figures 1 and 2, either of the coating devices can be deactivated.

In the solutions of the invention shown in Figures 1 and 2, as web W passes through film press nip N, the coating agent or adhesive films FlfF2 6111020 are transferred from the surface of rolls 12,16 to web W. After film press n, the coated web W follows a distance W 'is then removed and guided for post-processing of the film press 10, in particular post-drying 5. In Figures 1 and 2, these air drying devices are designated by reference numerals 30 and 31. In particular for pigment coating after a film size press, such non-contact dryers are generally used before the drying cylinder. The construction and operation of the coating devices 15,21 have not been described in detail herein, as they may be conventional, prior art, and thus do not form part of the present invention. In the prior art solutions, the coated web W 'can also be sought to be taken directly out of the film press nip by a long free pull to the air drying apparatus 30,31 by means of an air turning device 32 as illustrated by dashed lines 15 in the figures. However, the drawbacks described above are associated with this long free draw.

The method according to the invention is based on a new method of removing the coated web W 'from the surface of the first film press roll 12, which is followed by the web 20 after the film press nip. In the embodiment of the invention, a release roll or cylinder 23 serving as a release control web member W is disposed on the back side of the film press nip, which in the solution of FIG. 1 is spaced a distance L from the first film press roll 12. Preferably , preferably 0-600 mm. Thus, the free pull of the web W 'from the first film press roll 12 to the release roll 23 is short, resulting in a controlled release line and good runnability.

The passage of the coated web W 'from the first film press roll 12 to the release roll 23, in which the film W' leaves the film tangentially from the surface of the press roll 12, is illustrated by a solid line is the optimum situation sought by the solution of FIG. In fact, however, after the tangent point t, the coated web W 'follows the 35 surfaces of the film press roll 12 for a certain distance s, i.e., until the tensile action of the web W' overcomes the tensile and rupture resistance of the coating film 7 111020. This is illustrated in Fig. 1 by a dotted dashed line representing the passage of the web W '. The release point of the web W 'thus oscillates and walks between the tangent point t and the tear point p of the film shown in the figure. However, the tear point p of the coating film 5 and the machine direction (and also transverse) migration of the tear point 5 are so well controlled that the film splitting between the surface of the film press roll 12 and the web W 'does not cause substantial fogging. 1 and 2, in the case of double-sided coating or surface sizing, on the opposite side of web W ', i.e. on the other side of the second film press roll 16, the film splits at a slower rate which can be described by the normal acceleration of the opening nip. Hal keamisnopeus of the normal acceleration of web separation, wherein the release rate is relatively small, and this side of the web W 'the formation of mist is quite little.

15

In the embodiment of Fig. 2, the release roll or cylinder 23 is adapted to nip contact with the first film press roll 12 and the web V 'thereon. In this solution, the web W 'is thus displaced completely from the first film press roll 12 to the release roll 23, whereby the point of release of the web 20 W' from the first film press roll is not "wandering" at all, but remains constant and fully controlled. In the case of Figure 2, a suitable line load value between 0 and 100 kN / m may be considered between the release roll or cylinder 23 and the first film press roll 12 and the web W 'thereon. It is further preferred that the line-25 load be adjustable. The solution of Fig. 2 is intended to emulate, when removing the web W 'from the first film press roll 12, the situation on the side of the second film press roll 16 where, as described above, there is no substantial misting.

Further, it is preferable to position the release roll or cylinder 23 on the back side of the film press nip N so that it fills the opening N of the film press 10, whereby the release roll or cylinder 23 collects on the surface of the coating press or nail 16 From the surface of the release roll or cylinder 23, the mist is then transferred back to the web W '. Figures 1 and 2 further show that a shelf 29 may be disposed above the release roller or cylinder 23 under another coating device 21 of the film press roll 16 to collect mist and any coating material dripping from the coating device 21 to prevent it from dripping onto the web W '. The shelf 29 provides a good space 5 for collecting any fog that may be generated, and in this connection, for example, suction devices (not shown) for collecting and removing the mist can be provided.

Figures 1 and 2 of the drawing further show that the release roller or cylinder 10 is mounted on the film press body 11 on pivotable loading arms 24 which are pivotable by the loading cylinders 26 e.g. in the case of the first film press roller 12 and release roller 23 2 is the distance between L and the situation of Figure 2, in which the release roller or cylinder 15 is in nip contact with the first film press roll 12 and the web W thereon. It is preferred that the distance L be varied during travel to find the optimum release point on web W '. By means of said loading arms 24 and loading cylinders 26, the previously mentioned possibility of adjusting the line load is also realized. The displacement and position adjustability of the release roll or cylinder 23 may also be implemented in some other way than that shown in Figures 1 and 2.

Since in the case of double-sided coating the surface W 'of the web facing the release roller or cylinder 25 is also coated, care must be taken to prevent the coating from adhering to the surface of the release roller or cylinder 23. For this purpose, the surface of the release roll 23 may be formed to repel the coating agent. When the coating material is a surface adhesive, a good result is obtained by forming the surface of the release roll or cylinder 30 of steel. In the case of a pigment coating, for example, polytetrafluoroethylene (TeflonR) may be used as the surface material. In order to improve non-tack, it is further preferred to keep the surface of the release roll or cylinder 23 moist. Moisture can be obtained, for example, by condensation of a water film on the surface. Hereby, the release roller or cylinder 23 may need to be cooled to produce and / or enhance the condensation phenomenon. The surface of the release roll or cylinder 23 may also be fed with steam 9111020 or a vapor-air mixture to ensure condensation film. Further, a water scraper may be used with the release roller or cylinder.

The release roller or cylinder 23 may be driven or may be freely rotatable. The rotational speed (surface speed) may be the same as the web speed, but on the other hand, the speed may also differ from the web speed.

The release roller or cylinder 23 and its operation can be further modified depending on the desired properties. Fig. 3A is a schematic representation of a solution in which the release roller 23A is a suction roll provided with a suction zone 23A '. The suction zone 23A 'provides the desired grip and the desired distance or sector to the web W'.

Similarly, it is shown in Figure 3B that a blowing roll 23B may be used as a release roll or 15 cylinder. Such a solution is advantageous when it is desired to provide a non-contact transfer of the web W 'over the release roll 23B.

Fig. 3C shows that an air turning device 23C can still be used as replacements 20 for the release roller or cylinder 23. The air turning device 23C can be, for example, an air turning device based on the coanda effect. The distance of such an air turning device from the film press roll 12 is preferably between 0 and 50 mm. The air turning device 23C may also be a direct blowing air turning device which is likewise arranged at an adjustable distance from 25 mm to 50 mm from the film press roll. The release geometry of the air pivoting device may be straight, concave or convex. Utilizing air technology, especially an air-turning device based on the coanda phenomenon, the web in the desired geometry is obtained from the roll by following the shape of the air-turning device. The release line and / or film splitting geometry is thus well controlled.

30 - · 'In the case of stripping, e.g. in the manner shown in Fig. 1, where the film tears along the line, the tear point is stabilized and the tear point migration is controlled. If the release occurs, for example, in the manner shown in Figure 2, which mimics the situation in the film press nip 35 on the opposite side of the web, it is attempted to minimize the film bursting speed, i.e., to allow the film to burst.

10 111020

In the figures of the drawing, the passage of the web W is shown obliquely from above and after the nip N is shown the next first film press roll 12 of the web W. However, there are several alternative solutions to the geometry shown, one of which is a second film press roll 16. Here too, the release control device can be used fitted on the opposite side of the web W. In the method and film press of the invention, the web can also be guided to run from the bottom up. More generally, the film press rolls form a nip 10 can be of any geometry and kaksipuolei-Sessa coating or surface-sizing of the separation of the web may be any web either side, depending on which film press roll after the nip, the web is placed in this.

The invention has been described above by way of example with reference to the preferred embodiments shown in the figures of the accompanying drawings. However, the invention is not limited to the examples shown in the figures, but different embodiments of the invention may vary within the scope of the inventive idea defined in the appended claims.

20 * »

Claims (40)

A method in a film press comprising coating or surface gluing the web (W) on at least one side by forming a film press nip (N) between the first and second film press rolls (12,16) and applying a coating agent or a surface adhesive to the film (W). F1, F2) at least on the surface of the first film press roll (12), the web (W) being passed through the film press nip (N) so that the coating material or surface adhesive is transferred from the surface 10 of the film press roll (12) to the web (W); ), the web (W ') follows the surface of the first film press roll (12) where it is removed from the film press of the coated or glued web (W') for subsequent processing, characterized in that the web (W ') is removed from the first film press roll (12) (N) on the downstream side, opposite the first film press roll (12) to the web (W ') by a release control device (23,23A, 23B, 23C) arranged on its side. 2. Förfarande enligt patent kravet 1, tiltecknat därav, att en lös-20 groingsvals eller-cylinder (23, 23A, 23B) används som anordning för behärskning av lösgöringen. Method according to Claim 1, characterized in that the release roller or cylinder (23,23A, 23B) is used as the release control device. 3. Förfarande enligt patentkravet 2, kännetecknat därav, att nypkontakt bildas medelst lösgöringsvalsen eller -cylindern (23, 23A) med den första 25 filmpressvalsen (12) och den därpä belägna banan (W ') för överföring av • <banan (12) full-bottom cylindern (23, 23A) fullt understott. Method according to Claim 2, characterized in that a nip contact ... 25 is formed with the release roll or cylinder (23,2 3A) with the first film press roll (12) and the web (W ') thereon to move the web from the first film press roll (12). le or cylinder (23.23A) fully supported. 4. Förfarande enligt patentkravet 3, kännetecknat därav, att lösgörings-valsen eller-cylindern (23) belast mot den första filmpressvalsen (12):; och den därpä belägna banan (W ') med en linjebelastning pä 0-100 kN / m. * Method according to claim 3, characterized in that 30 release rolls or cylinders (23) are loaded against the first film press, roll (12) and the web (VT) thereon with a line load of 0-100 kN / m. 5. Förfarande enligt patentkravet 2, tiltecknat därav, att avständet (L) fräntan av den första filmpressvalsen (12) account ytan av lösgöringsvalsen 35 eller (23, 23A, 23B) 0-1000 mm. 18 111020 The method according to claim 2, characterized in that the distance (L) from the surface of the first film press roll (12) to the surface of the release roll or 35 cylinder (23,23A, 23B) is 0-1000 mm. 12 111020 6. Förfarande enligt patentkravet 2, kännetecknat därav, att avänstet frän ytan av den första fi Impress or its (12) account ytan av lösgöringsvalsen eller (23, 23A, 23B) and 0-600 mm. 5 7. Förfarande enligt face av patentkraven 2-6, kännetecknat därav, att vid et förfarande däranan (W) beläggs eller ultrasound for sidorna förhindras väsentligen vidhäftning av beläggningsmedel eller ytlim imper for 23 (23) frän denää ytan av tap (W ') bildade beläggningen. 10 Method according to Claim 2, characterized in that the distance from the surface of the first film press roll (12) to the surface of the release roll or cylinder (23,23A, 23B) is 0-600 mm. A method according to any one of claims 2 to 6, characterized in that in the method of coating or surface gluing the web (W) on both sides, the coating formed on the surface of the web (W ') substantially prevents the coating agent or surface adhesive from adhering to the release roll or cylinder (23,23A). , 23B). 10 8. Förfarande enligt patentkravet 7, kännetecknat därav, att en vattenfilm condenseras ophthalm av lösgöringsvalsen eller -cylindern (23) förhindrande av vidhäftning av beläggningsmedel eller ytlim. 9. Förfarande enligt patentkravet 7 eller 8, kännetecknat därav, att lösgöringsvalsen eller -cylindern (23) avkyls för ästadkommande och / eller effektiverande av condensfenomenet. Method according to Claim 7, characterized in that a film of water is condensed on the surface of the release roll or cylinder (23) to prevent the coating material or surface adhesive from sticking to it. A method according to claim 7 or 8, characterized in that the release roll or cylinder (23) is cooled to produce and / or intensify the condensation phenomenon. 10. Förfarande enligt face av patentkraven 7-9, kännetecknat därav, att 20 änga eller äng-luftblandning tillförs account ytan av lösgöringsvalsen eller -cylindern (23) för rande av condensfilmen. Method according to one of Claims 7 to 9, characterized in that steam or a vapor-air mixture is supplied to the surface of the release roll or cylinder (23) to ensure condensation film. 11. Förfarande enligt face av patentkraven 2-10, kännetecknat därav, att lösgöringsvalsen eller-cylindern (23) använsä sa placerad efter 25 filmpressnypet (N), att den väsentligen fyller det sig öppnande nypet (N) av filmpressam (10) för up. av den av filmpressnypet förorsak dimman nap sin yta och för vidareöverföring av dimman pä banan (W '). Method according to one of Claims 2 to 10, characterized in that the release roller or cylinder (23) is used after the film press nip ... 25 (N) so positioned that it substantially fills the opening n (N) of the press compressor (10). ) to collect the surface of the film press nozzle and further transfer the mist to the web (W '). 11 111020 12. Förfarande enligt face av patentkraven 2-11, rotation dnav, 30 att lösgöringsvalsen eller-cylindern (23) tillats rotera frit. »• Method according to one of Claims 2 to 11, characterized in that the release roll or cylinder (23) is allowed to rotate freely. 13. Förfarande enligt face av patentkraven 2-11, kännetecknat därav, att lösgöringsvalsen eller-cylindern (23) roteras med saandan hastighet, att ythastigheten av lösgöringsvalsen eller-cylindern motsvarar hastig-35 heten av banan (W '). 19 111020 Method according to one of Claims 2 to 11, characterized in that the release roll or cylinder (23) is rotated at such a speed that the surface speed of the release roll or cylinder corresponds to the speed of the web 35 (W). 13 111020 14. Förfarande enligt nagot av patentkraven 2-11, kännetecknat därav, att lösgöringsvalsen eller -cylindem (23) roteras med patan hastighet, att ythastigheten av lösgöringsvalsen eller -cylindern awiker f ran hastigheten av banan (W '). 5 Method according to one of claims 2 to 11, characterized in that the release roll or cylinder (23) is rotated at such a speed that the surface speed of the release roll or cylinder is different from that of the web (W). 5 15. Förfarande enligt patentkravet 1, kännetecknat därav, att som anord-Ning för behärskning av lösgöringen används en päanda coanda-phenomenet sig grundande luftsvängningsanordning (23C). 16. Förfarande enligt patentkravet 15, kännetecknat därav, att avänstet frän luftsvängningsanordningen (23C) som grundar sig at coanda-phenomenet account den första filmpressvalsen (12) 0-50 mm. Method according to Claim 1, characterized in that an air-turning device (23C) based on the coanda effect is used as a release control device. Method according to Claim 15, characterized in that the air turning device (23C) based on the coanda phenomenon is at a distance from 0 to 50 mm from the first film press roll (12). 17. Förfarande enligt patentkravet 1, kännetecknat därav, att som anord-15, and för behärskning av lösgöringen används en nap direktbläsning sig grundande luftsvängningsanordning (23C). Method according to Claim 1, characterized in that the blowing control device is an air blowing device (23C) based on direct blowing. 18. Förfarande enligt face av de föregäende patentkraven, kännetecknat därav, attläget och avständet av anordningen (23, 23A, 23B, 23C) för 20 behärskning av lösgöringen frän ytan av den första filmpressvalsen (12) från och regleras under det optimal lösgörings-stället för banan (W '). Method according to one of the preceding claims, characterized in that the position 20 and the distance from the surface of the first film press roll (12) of the release control device (23,23A, 23B, 23C) are varied and adjusted during driving to find the optimum release point of the web (W '). 19. Filmpress, som anordnad att belägga eller ytlimma en bana (W) 25 etminstone per sidid, flip filmpress (10) omfattar en första och en andra filmpressvals (12, 16) f bildande av ett filmpressnyp (N), av vilka filmpressvalsar ätminstone den första valsen (12) försedd med beläggningsanordningar (15, 21) för applicering av beläggningsmedel eller ytlim som en film (F1 (F2) påtan av ifrägavarande filmpressvals (12), 30 colors banan (W) är anordnad att led genomic filmpressnypet (N); setting, att beläggningsmedel eller ytlim i ifrägavarande nyp (N) Överförs frän ytan av filmpressvalsen (12) on banan (W), color banan (W ') after filmpressnypet (N) and anordnad att felja med ytan av den första filmpress- * valsen (12), frän eng den den anordnad att lösgöras för efter film-35 pressen (10) felandde av den belagda eller ytlimmade banan (W '), kännetecknad därav, att filmpressen (10) är försedd med en pä 20 111020 ut gängssidan av filmpressnypet (N), access to link ban ban (YT) i förhällande account den första filmpressvalsen (12) anordnad anordning (23, 23A, 23B, 23C) för behärskning av lösgöringen, werk anordnad att lösgöra banan (W ') i esskad geometri frän den första filmpressvalsen (12). 5 A film press arranged to coat or surface glue on at least one side of the web (W) comprising a film press nip (N) formed by first and second film press rolls (12,16), of which at least a first roll (12) of film press rolls. provided with coating devices (15,21) on the surface of said film press roll (12) for applying a coating agent or adhesive to said film (W), the web (W) being arranged to pass through film press nip (N) such that said nip (N) the coating material or surface adhesive is transferred from the surface of the film press roll (12) to the web (W), whereupon the film press nip (N) is adapted to follow the surface of the first film press roll (12) from which it is arranged to be detached from the coated film (VT) ) for further treatment 35, characterized in that the film press (10) is provided with a film press nip (N) with a release control device (23,23A, 23B, 23C) disposed on the discharge side, opposite the first film press roll 14111020 (12), to disengage the web (W ') from the first film press roll (12) in the desired geometry . 20. Filmpress enligt patent kravet 19, tongue and groove, att anordningen för behärskning av lösgöringen and en lösgöringsvals eller-cylinder (23, 23A, 23B). A film press according to claim 19, characterized in that the release control device is a release roll or cylinder (23,23a, 23B). 21. Filmpress enligt patentkravet 20, a rotary encoder, att lösgörings- valsen eller -cylindern (23), and a nontkontakt med den första filmpressvalsen (12) och den därpä belägna banan (W ') förveröring av banan frän den första filmpress ) lösgöringsvalsen eller -cylindern (23) fullt understött. 15 Film press according to claim 20, characterized in that the release roll or cylinder (23) is adapted to nip contact with the first film press roll (12) and the web (W ') thereon to transfer the web from the first film press roll (12) to the release roll or cylinder (12). 23) Fully supported. 22. Filmpress enligt patent kravet 21, tongue-and-groove, att lösgöringsvalsen eller-cylindern (23), and inserting a film pressvalsen (12) och den därpä belägna banan (W ') med en linjebelastning nap 0-100 kN / m. 20 Film press according to Claim 21, characterized in that the release roll or cylinder (23) is loaded against the first film press roll (12) and the web (W ') thereon with a line load of 0-100 kN / m. 23. Filmpress enligt patent kravet 20, tiling deck därav, att avänstet (L) frän ytan av den första filmpressvalsen (12) account ytan av lösgöringsvalsen eller (23) and 0-1000 mm. A film press according to claim 20, characterized in that the distance (L) from the surface of the first film press roll (12) to the surface of the release roll or cylinder (23) is 0-1000 mm. 24. Filmpress enligt patent kravet 20, tilt decknad därav, att avändet (L) frän ytan av den första filmpressvalsen (12) account ytan av lösgöringsvalsen eller (23) and 0-600 mm. Film press according to Claim 20, characterized in that the distance (L) from the surface of the first film press roll (12) to the surface of the release roll or cylinder (23) is 0-600 mm. 25. Filmpress enligt face av patentkraven 20-24, kännetecknad därav, 30 att ätminstone i et fall där filmpressen (10) ar avsedd för beläggning; eller ytlimning av banan (W) sidorna är vidhäftning av belägg- ningsmedel eller ytlim ä ytan av lösgöringsvalsen eller -cylindern (23) fränden pä ytan av banan (W ') bildade beläggningen väsentligen för- M hindrad. 35 21 111020 Film press according to one of Claims 20 to 24, characterized in that, at least in the case where the film press (10) is for mutual coating or surface sizing of the web (W). adhesion of the coating material or surface adhesive to the surface of the release roll or cylinder (23) from the coating formed on the surface of the web (W ') is substantially prevented. A film press according to claim 25, characterized in that the coating agent or surface adhesive on the surface of the release roller or the roller (23) is prevented by a water film condensed on the surface of the release roller or cylinder. 26. Filmpress enligt patent kravet 25, tongue-and-groove, att vidhäftning av beläggningsmedel eller ytlim naptan av lösgöringsvalsen eller -cylin-Dern (23) förhindrad medelst en Pätan av lösgöringsvalsen eller -cylindern condenser vatten. 5 27. Filmpress enligt patent kravet 25 eller 26, rotary angle, att lösgöringsvalsen eller-cylindern (23), and avkylbar för ästadkommande och / eller effektiverande av kondensfenomenet. Film press according to Claim 25 or 26, characterized in that the release roll or cylinder (23) must be cooled in order to produce and / or intensify the condensation phenomenon. 28. Filmpress enligt face av patent kraven 25-27, tommelecknad därav, att änga eller ang-luftblandning and anordnad att tillföras account ytan av lösgöringsvalsen eller-cylindern (23) förkrande av condensfilmen. Film press according to one of Claims 25 to 27, characterized in that, in order to secure the condensation film, a vapor or vapor-air mixture is provided on the surface of the release roll or 10 cylinder (23). 29. Filmpress enligt face av patent kraven 25-28, kangnetecknad därav, 15 att ytan av lösgöringsvalsen eller-cylindern (23) and handle the medial material, exempelvis polytetrafluorethylen, som avstöter det i filmpressen (10) använda beläggningsmedlet eller limmet. Film press according to one of Claims 25 to 28, characterized in that the surface of the release roller or cylinder (23) is treated with a coating material or surface adhesive used in the film press (10), for example polytetrafluoroethylene. 30. Filmpress enligt face av patent kraven 20-29, rotary tongue, 20 att lösgöringsvalsen eller-cylindern (23) and french roterbar. Film press according to one of Claims 20 to 29, characterized in that the release roll or cylinder (23) is rotatably free. 31. Filmpress enligt face av patentkraven 20-29, nipple därav, att lösgöringsvalsen eller -cylindern (23) försedd med en drivanord-Ning. ** 25 • t A film press according to any one of claims 20 to 29, characterized in that the release roll or cylinder (23) is provided with a drive. 25 32. Filmpress enligt face av patentkraven 20 -31, tongue dnav, att lösgöringsvalsen eller-cylindern (23), and an att rotera med hastighet, att ythastigheten av lösgöringsvalsen eller-cylindern motsva-rar hastigheten 'av. 30 ; * 33. Filmpress enligt face av patentkraven 20 - 31, kännetecknat därav, »att lösgöringsvalsen eller -cylindern (23) anordnad att rotera med hastighet, att ythastigheten av lösgöringsvalsen eller -cylindern 3 avviker frän hastigheten . 35 •. 22 111020 Film press according to one of claims 20 to 31, characterized in that the release roll or cylinder (23) is arranged to rotate at such a speed that the surface speed of the release roll or cylinder corresponds to the speed of the web (W '). 30th . Film press according to one of claims 20 to 31, characterized in that the release roll or cylinder (23) is arranged to rotate at such a speed that the surface speed of the release roll or cylinder is different from that of the web (W '). m 35 16 111020 34. Filmpress enligt face av patent kraven 20-33, tongue dnav, att lösgöringsvalsen eller -cylindern (23) and placerad pagängssidan, av filmpressnypet (N) adjusting, att den fyller det sig öppnande nypet (N) av filmpressen (10) ), the colors ifrägavarande lösgöringsvals eller 5-cylinders and anordnad att uppsamla den av filmpressnypet (N) dimer of forerunner. av beläggningsmedel eller ytlim pä sin yta och vidareöverföra dimman pä banan (W '). Film press according to one of Claims 20 to 33, characterized in that the release roll or cylinder (23) is disposed on the outlet side of the film press (N) so that it fills the opening (N) of the film press (10). the cylinder 5 is adapted to collect on its surface a coating or surface adhesive mist caused by a film press nip (N) and to further transfer the mist to the web <W ') · 35. Filmpress enligt face av patent kraven 20-34, taping därav, 10 att lösgöringsvalsen eller-cylindern (23A ') and försedd med en sugzon (23A') för ästadkommande av fäste mot banan (W '). A film press according to any one of claims 20 to 34, characterized in that the release roll or cylinder (23A) is provided with a suction zone (23A ') for providing grip on the web (W'). 36. Filmpress enligt face av patent kraven 20-34, rotary tongue, att lösgöringsvalsen eller-cylindern en bläsande Vals eller cylinder 15 (23B) förstadkommande av beröringsfri överföring av banan (W '). Film press according to one of Claims 20 to 34, characterized in that the release roll or cylinder is an inflatable roll or cylinder (23B) for providing a non-contact web (W '). 37. Filmpress enligt patentkravet 19, tongue and groove attorney, att anordningen för behärskning av lösgöringen, et al., Coanda-phenomenet sig grundande luftsvängningsanordning (23C). 20 A film press according to claim 19, characterized in that the release control device is an air-turning device (23C) based on the coanda effect. 20 38. Filmpress enligt patent kravet 37, tongue and groove, att avänstet frän luftsvängningsanordningen (23C) som grundar sig on coanda-phenomenet k til den första filmpressvalsen (12) 0-50 mm. * 25 39. Filmpress enligt patentkravet 19, tommelecknad därav, att anordningen för behärskning av lösgöringen en directingbläsning sig grundande luftsvängningsanordning (23C). A film press according to claim 37, characterized in that the air turning device (23C) based on the coanda effect is at a distance from 0 to 50 mm from the first film press roll (12). A film press as claimed in claim 19, characterized in that the release control device is a direct-blown air turning device (23C), A film press according to any one of claims 19 to 39, characterized in that the position of the release control device (23,23A, 23B.23C). and the distance from the surface of the first film press roll (12) is adjustable and adjustable during travel to find the optimum release point of the web (W '). 35 17 111020 j 1. Förfarande vid en filmpress, vid flashing en bana (W) beläggs eller superimposed on the setting, att i filmpressen (10). 5 pictures that filmpressnyp (N) mellan en första och en andra filmpressvals (12, 16) och beläggningsmedel eller ytlim appliceras som en film (Flf F2) tanstone av av ätätätätät ät film film film filmpresspresspresspresspresspresspresspresspresspresspresspresspresspresspress (((12 12 12 12 12,) 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 (N) setting, att beläggningsmedel eller ytlim i ifrägavarande nyp (N) Överförs frän ytan av filmpressvalsen (12) 10ää banan (W), color banan (W ') efter filmpressnypet (N) feljer med ytan av den första filmpressvalsen (12), frän vilken den lösgörs för efter filmpressen feljande behandling av den belagda eller ytlimmade banan (W '), kännetecknat därav, att banan (W') lösgörs i esskad geometri frän den första filmpressvalsen (12) med hjälp av en pä utäng av filmpress-15 nypet (N), accessing the av banan (W ') förhälland account den första filmpressvalsen (12) anordnad anordning (23, 23A, 23B, 23C) for behärsk-Ning av lösgöringen. 40. Filmpress enligt face av patentkraven 19 - 39, tilt decknär därav, 30 att och avständet av anordningen (23, 23A, 23B, 23C) för behärskning av lösgöringen frän ytan av den första filmpresävalsen (12) canada och regleras under drift för finnande av det optimala lösgöringsstället för banan (W '). * 35