DE1752403A1 - Device for the continuous coating of a sheet or strip-shaped material as well as coating and fixing material for the preferred use in this - Google Patents

Description

Device for the continuous coating of a sheet or strip-shaped material as well as Beschiohtungs- and KLxiermaterial for preferential use therein.

The invention relates principally to a more sophisticated apparatus involving continuous coating a flexible carrier material such as cardboard, paper, textile material, synthetic Material or the like permitted.

In many industries, particularly those dealing with packaging or wrapping, manufacture articles which do not need to have great durability and are intended to be used after to be thrown away for the first time, it is essential

IAN K ACCOUNT DKIlDNER BANK AO. FRANKFURT AM MAIN NO. SIOiIO

rolTICHICK ACCOUNT NK. ItIItO PRANKFURT _ 2 -

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to have a material that is excellent Has appearance and good preservation properties at necessarily very low manufacturing costs.

Accordingly, one tries to use a piece of paper or cardboard To utilize the value that is provided on the surface with a pad or a lining that or that gives it an attractive appearance.

The device and machine according to the invention allow a continuous process to obtain inexpensive material with a finishing product commonly referred to as a finish is clothed, which gives him excellent qualities in terms of appearance, a reputation of great regularity and gives a completely smooth surface.

The machine in which the invention is used is of the type having a lickerin from which the sheet or band-shaped carrier material is continuously discharged, a plurality of drive rollers and at least a coating roller, which is assigned to a trough, which is used as a covering or coating material for Use coming product in liquid or viscous state contains, as well as a device for chemical Fixing and drying of the coating product after having its application.

The device according to the invention is characterized in that it has a device for regulating the thickness of the coating applied to the surface of the carrier tape , which in turn has a cylindrical member of small cross-section

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has transversely arranged grooves or grooves on its surface at an even distance from one another, this cylindrical member being arranged perpendicular to the axis of advancement of the coated strip and is durable in attachment to this and is also assigned to a device through which it is in a rotary, the movement opposite to the direction of movement of the carrier tape can be displaced.

This regulating member is preferably formed by a threaded shaft which is attached to a bearing part is assigned, which forms a half-shell bearing on which it rests.

The in connection with the distribution roller (s) The device used to regulate the thickness of the coating layer leaves the coating material formed only by uxe ^ uie transversal hats Interstices or flow paths pass through in such a way that only a fully dosed amount of the coating or covering material can happen, which is limited and evenly distributed over the surface of the carrier tape. It is therefore sufficient for the achievement or setting a desired layer thickness of this product from the ones provided with threads or grooves To change the shaft and replace it with a shaft with a different pitch or depth of thread.

In a first embodiment of the invention, the coating roller (cn) dips or dips with its lower part into the trough containing the coating product in a liquid or viscous state assigned to a mechanical device through which

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Put them in a rotary and seal the feed movement of the carrier tape opposite movement is or are displaceable, the carrier tape in turn by this coating roller (s) is / are driven as a result of its tangential contact therewith.

In a variant relating to this first embodiment of the invention, the coating roller is one Device for regulating the thickness of the coating layer assigned which, as already described, a cylindrical Organ with threads or transverse grooves, which are located on the surface of the coating roller in Plant is located and rotates in the opposite direction in their movement.

With one for the coating of a tape only The device according to the invention has on a surface suitable further embodiment of the invention a trough containing the coating product and a coating roller partially immersed in this trough of which the carrier tape in contact with the immersed part of the surface of the drum can be received, the device according to the invention also having an element for regulating the corner of the coating layer which in turn has a shaft provided with a thread in the manner already described, which is in contact with the coated surface of the carrier tape, parallel to a surface line the drum and as close as possible to the height at which the carrier tape leaves the drum.

A coating composition particularly suitable for use in connection with the invention is represented by bie

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disalolution of a polyainide resin carried out for saturation in a solvent consisting of a mixture of formic acid and hydrochloric acid, which is suitable Ratio is added to a diluent consisting of a mixture of alcohol and water, achieved »

In this package, the coating product, after coating and application to the carrier tape, is subjected to a chemical fixation process by immersion in a neutralizing and washing bath consisting of water to which sodium bicarbonate has been added, after which the tape is subjected to a final drying.

For this purpose, the device according to the invention has a trough containing a fixing bath, in which the tape coated on its two surfaces with the coating material is immersed and is guided in a continuous movement by the device.

In one of the case where the tape can be coated only on one surface Soll ₉ adapted Ausführungeform the Srfindung, the trough fixitrpro- the domestic product containing a partially eingetsuonte in it on the drum from which the at it with its non besohioh- ended surface in plant carrier tape can be taken, wherein the inhabited surface of the action of the fixer is exposed.

According to a further embodiment of the invention, has

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the trough containing the fixer is a belt conveyor on, the lower part of which leads on a curved path through the bath, the one with its uncoated Surface on the conveyor belt in contact with the carrier tape can be picked up by this, while the other surface is exposed to the action of the fixing bath.

Further features and advantages of the invention result from calibration from the following description, in which the invention is described in more detail purely by way of example using several examples shown in the drawings will. Point at the same time

Figure 1 is a principle theme of a first form of training of the sealing machine according to the invention |

Figure 2 is a partial view of the loading device!

figur 3 a part of the facility sur the IUoke dar Beaohichtunglage |

FIG. A shows a principle of an apparatus according to a certain embodiment of the invention;

Figure 5 a Prinaipaohema ainea apparatus according to a third embodiment of the invention;

Figure 6 a Prinaipsohema ainaa apparatus according to einar fourth embodiment of the invention | and

FIG. 7 a principle theme of an apparatus according to Einar fifth embodiment of the invention.

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In the embodiment shown in FIGS. 1, 2 and 3 the carrier sheet formed for example from cardboard is from a supply drum or a Reel 1 in J-'orm of a continuous fleece 2 unwound. The supply roller 1. has in particular a system for lierrelunf .: the tension, for example from a band brake is formed, which acts on the axis of the distributor drum. The forward or feed movement of the fleece 2 is determined by a set of minehmer whales 3 and 3 ', which are described below will.

The fleece runs over a first roller to regulate the tension and the axial ^xl ichtung and then over a reversing roller 5, which through its arrangement in terms of its height allows the angle at which the fleece 2 enters the coating system 6 to be controlled With the turning roller 7, the fleece is subjected to a second coating on the previously free surface.

It can easily use one or the other of the two coating systems 6 and 8 can be omitted if there is only one garment on only one surface of the carrier sheet wants to achieve. However, it is also sufficient to leave the trough empty, which is assigned to the surface that must remain uncoated. It is also possible for each of the two coating systems to be different to regulate in order to obtain a different coating of both surfaces, and zv / ar, for example, by one to get more clad front surface, while the back surface remains less clad, or to get on

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every surface has different colors of clothing to obtain.

The coating system shown in more detail in i'igur 2 has a trough 9 in which the coating product is in a liquid or semi-liquid (viscous) Condition is ^ ine first drum or roller immersed in the bath of the coating product and ensures the application of a first coating layer on the lower surface of the roller running over Fleece 2. The fleece then runs over the device for regulating the thickness of the coating layer, which the wiping effect makes it more even and more uniform. Distribution of the product on the surface of the fleece 2 guaranteed. This facility is through a cylindrical, threaded or slotted shaft 12 is formed which is supported on a bearing device 11 in Form of a half-shell bearing is arranged, and this The shaft 12 is opposed to the advance of the ^ read 2 by a running rotational movement driven. The shaft 12 is for this purpose by a meohanisohe Drive device driven, which is in operative connection with the motor, not shown in the drawing Machine is at a standstill. The control device shown in this way permits it, a regular distribution and the creation of a perfect surface of the support on the carrier fleece to obtain.

The non-woven then passes over a second roller 13, immersing the Beachichtungeproduktee also dee with its lower Bereioh into the bath. Site «The roller rotates against the direction of the feed movement of the fleece 2 and

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improves the coating by ensuring that the product is evened out and distributed regularly on the surface of the fleece 2 ensures. The roller 13 is a system for regulating the amount of it on the lower Surface of the fleece 2 applied and deposited BescMchtungsfilmes assigned. This rule system is formed by a threaded shaft Η that rests against the surface of the roller 13 is located and in its position and in rotation in the rotation of the roller 13 opposite sense by a storage device 15 is held.

The rollers 10 and 13 rotating counter to the movement of the tape or fleece 2 are preferably moved and driven ^{synchronously by a mechanical device as a function of the movement of the rollers 3 and 3 1.} The device for changing the speed allows the speed of the rollers 10 and 13 to be regulated and thus to vary the characteristic features and in particular the diameter of the layer of the sealing product applied to the fleece 2 by these rollers.

The trough has an ^x 'filter 16 which delimits a zone within the trough enclosure in which the cellulose waste rubbed off by the heating effect caused by the movement of the wheat in contact with the fleece 2 is collected. For this purpose, two are constantly cleaning Strippers 17,18 the surfaces of the rollers 10 and 13 and lead the cellulose lint or fibers back into the zone of the trough delimited by the filter 16, which can be cleaned in the usual way. This arrangement prevents in particular that the second

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V / alze 13 applied - ⁰ Hm of the coating product due to different abrasion particles and impurities.

"will

Otherwise they would not be on the coated surface of the fleece would deposit.

Wake through the two coating systems 6 and 8 the fleece runs into a fixing trough 19, where by immersing the fleece 2 in a fixer bath the chemical heatings are carried out which are intended to fix the coating product and to ensure its solidification.

The fixer is advantageously permanent and continuous fed and emptied in countercurrent dureh the supply line 20 and the emptying line 21. The trough length is chosen so that corresponding to that for the movement of the fleece 2 provided maximum feed rate the time for passage through the bath for initiating a full response and a complete effect on the coating product is sufficient is"

The coated fleece then runs between the stripping and mining cylinders J, 3 · before it enters the drying device. The latter is formed by a chamber 22, which has a * battery of cylinders 23, 23 ', 23 *, which _{are heated on the surface by electrical Grebläseradiatoren 24 t} 24', 24 ^. The latter heat the cylinder through convection and radiation, over which the fleece runs, which is heated up by contact, while the hot air circulated through the radiators the fleece in the between two

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following cylinders is heated.

When leaving the drying chamber, the coated and dried fleece is rolled up and stored brought on the roll-up roller 25.

In the embodiment shown in FIG. 4, the device according to the invention is particularly intended for coating a strip only on one of its surfaces. This device has a feed roller 26 and the coating device 27, which has already been described above and is shown in particular in FIG. The strip coated only on one side is passed on by the deflection rollers 28 and 28 'onto the drum 29 which is immersed in a trough 30 containing the fixing bath 31. _e The hfisohiohtfite side of the belt so that the wira "MPACT oes bath so exposed that the Hückseite of the strip before each impregnation bcw" impregnation is protected by it is in contact with the V / Alze 29th

In the ^{embodiment shown in x} 'igur 5, the machine provided here for coating the carrier tape only on the front side has the feed roller 32, from which the carrier tape 33 is continuously unwound, which reaches the deflection roller, which determines the angle by its arrangement , with which the carrier tape 33 engages around the coating roller 34 *.

The coating system shows in this exemplary embodiment a first coating roller 34 'which, with its lower area, enters the coating trough 36

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dives. This roller rotates against the direction of advance of the carrier tape 33, and it deposits a layer of the coating product on the lower side of the tape, which is tangential to its upper surface line. Moving downwards, the belt comes into operative connection with a first device for ^{equalizing the support, which is formed by a cylinder provided with transversely or transversely arranged or annular Λ} χ11βη, which is freely and rotatably mounted on its axis and by the belt resting on it same sense as this is driven. This cylinder ensures an initial equalization of the coating layer.

A control element already described is downward movement and preferably above the coating trough arranged. It is made by one with pills or threads provided shaft 35 formed in a shell bearing 35 'is held because it has a semi-cylindrical seat. This shaft becomes mechanical in one sense the feed movement of the carrier sheet counteracted Rotational movement offset. This facility ensures a complete unification and great Regularity of the cover layer of the coating product on tape 33.

The deflection cylinders or rollers 38 and 38 'then lead the carrier tape to the drum 39 of the fixing trough 18 already above.

In the exemplary embodiment shown in FIG the strip material 40 is continuously unwound from a gate cylinder 41 and runs over the deflection and Pull cylinders 42 and 42 ', it is then driven by the drum

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43 driven, on which it is brought into contact and which it contains in the coating product Trough 44 is immersed. When leaving the bath, the tape is subjected to the action of the regulating body for the layer thickness « As already described, the latter is provided by a shaft 45 provided with a tube or thread formed, which rests on a shell bearing 46 and is subjected to an adjustable pressing tension «The shaft 45 is mechanical with a movement indicated by the arrow in the advancing movement of the tape 40 driven in the opposite direction. The shaft pushes out the superfluous product and feeds it back and only leaves a perfectly even and constant deposit on the carrier tape «

In the embodiment of Figure 7 is the coating device designed as shown in Figure 2 and already described in connection with this is. The tape coated on only one side enters the device for fixing the Coating material. The belt is carried by a conveyor belt 47 or a conveyor, its through the molded parts 48 and 48 'guided movement is elliptical, driven in such a way that the belt is constantly under pressure is pressed against the conveyor belt, whereby the as yet uncoated side is thereby before impregnation or impregnation is protected by the fixer. After a back and forth flow into the bath 49 contained in the container 50 or out of this, the tape passes under the stripping roller 57 and then under the deflection roller 52 in order to " danaoh to be forwarded to the drying chamber.

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Claims (1)

Patent claims ( 1 _# )> Device for the continuous coating of a sheet or band-shaped material with a feed roller from which the sheet or band-shaped material can be picked up at least one coating roller, which is assigned to a trough containing the Beschiohtungeprodukt in a liquid or viscous state, a mechanical device for unwinding the sheet or tape-shaped material and a drying device, characterized in that it has a device (11, 12 or 37, 35, 35 or .46,45) «for regulating the thickness of the coating layer, which has a cylindrical body (12 or 35 or 45) with a small cross-section, which in turn has grooves or grooves arranged transversely or transversely on its surface at a uniform distance from one another, whereby this control device (11, 12 or 37, 35 ', 35 or 46, 45) is arranged perpendicular to the axis of the feed movement of the sheet or strip-shaped material (2 or 33 or 40) and in contact with this BANK ACCOUNT DlIBDNII BANK AG. PMANK PU MT AM MAIN NO. ItOJSO Postal checking account Nk. itasto Frankfurt 109822/04 * 2 - 2 - as and is assigned to a mechanical device, by means of which its cylindrical body (12 or 35 or 45) can be set in a rotary movement _{opposite to the direction of movement of the carrier tape (2 or c} 33 or Wc40) « 2.) Door direction according to claim 1, characterized in that ciie device (11, 12 or, 37, 35 or ¹ _{, 35 or e} 46, 45) for regulating the coating thickness has a threaded shaft (12 or 35 or 45 ), which after coating can be brought into contact with the sheet or strip-shaped material (2 or 33 or 40) transversely to the axis of its feed movement and rotated in the opposite direction in this feed movement. 3.) Device according to claim 1 or 2, characterized in that it has two coating rollers (10,13), on the upper region of which the sheet or strip-shaped material (2) can be brought into contact with one another during its movement and one that It contains coating material assigned to a trough (9) and each of which can be immersed with its lower area in the coating compound, the coating rollers (10, 13) being assigned to a mechanical device by which they are rotated in the direction of movement of the sheet or band-shaped material are displaceable opposite movement, and of which at least one orphan (13) also has a device (15 »14) for regulating the coating thickness, which has a threaded shaft (14) which is in the coated zone under slight pressure can be brought into contact with the surface of the coating roller (13) and is rotatably held in the opposite direction in its movement. 109822/0442 1752A03 4 _#) device, in particular according to claim 1 or 2, characterized in that it comprises a trough (44) is receivable by the coating product, and having a dipping with its lower area into the trough (44) the coating roller (43), of the the sheet or band-shaped carrier material (40) can be picked up during its movement and can be brought into contact with the part dipping into the coating bath that it also has a device (46, 45) for regulating the thickness of the coating layer, which in turn has a threaded shaft (45) which, in the zone in which the coated tape, after passing through the coating bath (44), the surface leaves the coating roller (43) covered by the carrier tape (40) to the coating roller (43) still covered with the coated carrier material Abutment can be brought, the control device (46, 45) being assigned to a mechanical device which ensures the rotation of its shaft (45) in the opposite direction to the movement of the coating roller (43). 5) Device according to one of the preceding claims, characterized in that its coating bath (9 or 36 or 44) is particularly suitable for continuous loading / ■ ·,.; layering of paper or cardboard contains a Beβohioh ■ tungβma- '■ ^> ..' material, which can be chemically neutralized and fixed on the sheet or tape-shaped carrier material (2 or 33 or 40) after it has been applied. 6.) Device in particular according to claim 5, characterized marked that their coating bath (9 or 36 or 44) 109822 / 0U2 - ♦ - • in by dissolution of a polyamide resin in a solvent carried out to saturation, which from a mixture of formic acid and hydrochloric acid, which in a suitable ratio one of a Misohung ▼ on alcohol and water is added to existing diluents, the resulting coating material contains. 7.) Device according to one of the preceding claims, characterized in that it also has a trough (19 or 30) in which a means for chemical neutralization and fixation of the Besohiohtungsmeterials contained iet and the one partially in this bath (19 or respectively .30) immersed drum (22 or 29) on which the sheet or strip-shaped material (2 or 33 or 40) coated with the coating material comes to rest, covering it. 8.) Device according to claim 7 or a beard containing a chemically neutralizable and filable material, in particular designed according to claim 6, characterized in that the neutralizing agent consists of water added to sodium bicarbonate in a neutralizing trough (19 or 30). 9.J Beeohiohtungeeaterial inabeiottder · arur use in the device according to one of the preceding claims, characterized by g «kanwlohnrb. that ·· carried out until saturation «Dissolution a · * Polyaaldhareee into a ·» Ituaungsaittel, since «consists of a meowing aua Am« i »« naäur * and hydrochloric acid », dl · tittta also a mixture of ron, alcohol and faaaer beat »Fe» nd »rt visualization amittol aug · -« • ben iet, obtained iat. m 5 - 1V62403 Jl 10.) Fixing means inabeeondere for use in the device according to one of claims 1 to 8 and / or in connection with the Beachichtungamaterial according to claim 9, characterized in that ee consists of water added to sodium bicarbonate. Patent attorney Blank page