SU1219167A1 - Apparatus for depositing liquid coating composition on web material - Google Patents

Description

2. The device according to claim 1, characterized in that it is provided with a vacuum table with heating elements installed behind the cuvette in the direction of movement of the tape material.

3. The device according to claim 1, characterized in that the solution supply system comprises a buffer tank mounted on the rod with the possibility of synchronous movement and a spring-loaded surge tank.

4. The device according to claim 1, characterized in that it is provided with mechanisms for unwinding and winding tape material with friction clutches and an intermediate shaft, with

one

The invention relates to a polymer film coating technique.

The aim of the invention is to increase productivity and improve the quality of coatings.

FIG. 1 shows the proposed device, a general view; in fig. 2 - kinematic diagram, rear view; in fig. 3 - vacuum table, side view; in fig. 4 - the same, bottom view; in fig. 5 - solution supply system to the cuvette; in fig. 6 - cuvette with swiveling front knife.

The device comprises an alluvial cuvette 1, to which the front pivoting knife 2, made with a flat surface, and the rear height adjustable knife 3 are fastened.

A clamping element 5 is located above the cuvette on the uprights 4, all of which are mounted on the plate 6, which can be mounted with the help of the legs 7 on level 8 in a horizontal position. The clamping element 5 is supported from below by springs 9, and from the top by means of nuts 10 it can be mounted at a desired distance above the cuvette. The actuator 11 is connected via a gearbox 12 and a shaft 13 to a mechanism for drawing a tape material consisting of a drive 14 and a pinch 15 shafts. The unwinding mechanism consists of a friction clutch 16 and a roller holder 17 and is connected to the shaft 13 by means of gear gear 18. The tape winding mechanism is connected to the shaft 13 by means of a chain gear through a large 19 and a small 20 sprocket, the latter is seated on the intermediate shaft 21. On The same shaft is attached to gear 22, driving the coil holder 23 of the winding assembly through the clutch 24. In the course of the transfer of the tape material after the cuvette, a heated vacuum table 25 with a roller 26 and a heater 27 is installed. PCA transport of the web material coupled with the unwinding clutch mechanism using schesteren- chatoy transmission, and a clutch winding mechanism via an intermediate shaft - via a chain transmission, which bolschoy sprocket fixed to the drive shaft tape transport mechanism and mensche - on the intermediate shaft.

5. The device according to PP. 1-4, characterized in that the vacuum table, the cuvette, the belt pulling mechanism and the mechanisms for unwinding and winding the tape material are mounted in a body of transparent material.

The axle table 28 can change its position relative to the horizon and be fixed in the desired position by clamps 29. A vacuum is applied to the longitudinal grooves 32 through the nozzle 30 and the apertures 31. A container 33 with a blocked nozzle 34 is installed on the shaft 35 so that it can move in a vertical plane. The equalization tank 36 is also located on the brush 35 and is pressed against the bottom by a spring 37, and is fixed on top of the lid 38 in the correct position by a nut 39. A tube 40 connects the tank 36 and cuvette 1 as communicating vessels. The tubes 41 and 42 form an overflow line. In addition, the device contains a rod 43. The tape material is fed

a system of guide rollers 44-47 which are located in a transparent housing 48 connected to the hood. Drying of the coated tape is carried out by a counter-current of warm air through the heater.

49 from the fan 50. A temperature sensor 51 is placed in the drying zone. The entire device is mounted on the table 52 and is equipped with a control and monitoring console 53.

The device works as follows. From drive 11 through gearbox 12 and shaft

13, a pair of shafts is driven; the driver 14 and the presser 15. The belt material 54 loaded between the rollers is last unwound from the reel attached to the holder 17 connected to the friction clutch 16, which, for the purpose of uniformity of tension when the ribbon is unwound, receives anti-directional unwinding through gear transmission 18 . The material then passes through the cuvette 1 onto a heated vacuum table 25, a system of guide rollers 44-47, and is wound on a roller holder 23 connected through a friction clutch 24 and gear 22

intermediate shaft 21. Chain sprockets 20 and 129 are connected to shaft 13. Herewith, intermediate shaft 21, and hence the winding mechanism front 24, in order to compensate for the diameters of the coils and create a constant tension on the line, rotate faster than the master shaft 14. The coating is made by the cuvette 1, which is fixed on the plate 6. On the same plate on the rack 4, pressed

gives the space that the tank 36 occupies under the action of the spring 37. The capacity 33 with a solution moves synchronously with the tank, which is lifted up by the nut 39, and lowered under its own weight, the nut 39 serves as a limiter. The level in the tank 36 is kept constant, which is set pipe 34. The tube 41 serves for random overflow of the solution and for directing it to the collector. Ribbon springs 9, is the pressing material material 54 when drawn in dependence 5, which sets the pressure of the tape material 54 to the front 2 and rear 3 knives. The film is pressed to the blades of the knives moistened with a solution from the cuvette 1. The film moves towards Iozh 2. An angle (5-85 °) is established between the film and the plane of the 15th, in which a meniscus is formed through the entire width of the material. The value of the set angle a is chosen depending on the chosen thickness of the coating and the speed of application.

By turning knife 2, it is possible to change the plane defining the angle between the material, and thereby changing the width of the meniscus, on which the thickness and density of the coating depends. Feed and Maintain Level

The stems from the thickness are drawn out or compressed, i.e. pulsation occurs. In order to transfer the pulsation to the pump cell, a heated vacuum table 25 is installed.

On base 28 it is possible to change the position of the heated vacuum table 25 and fix it with the help of clips 29. In the lower part on the table mirror there are parallel grooves 32 perpendicular to the JQ of the moving material, which is supplied through the holes 31 with vacuum. A heater 27 is installed on the opposite side of the table. When the coated material moves from the vacuum table and the rollers, heat is taken off by virtue of the fact that the solution in cuvette 1 goes through 25 tube 25 va of the solution consists of rapidly evaporating the equalizing tank 36. Cuvette 1 with tank 36 Connected as communicating vessels. With a change in the angle on the knife 2, the level of the solution in the cuvette 1 has to be changed, and accordingly in the tank 36. For this, the tank

components that are intensely evaporated from the surface of the tape material. Further along, in the upper part of the device, the coated material is dried by a counter-flow of air from a veneer, which is adjustable in height. For the 30 tiller 50 through the heater 49. Drain to raise the level in the cuvette, it is necessary to raise the tank 36 to the appropriate level by rotating the nut 39. Moving up the stem 35 along the thread, the nut 39 clears the material with the layer applied on it a holder roller 23. The installation is connected to the exhaust ventilation system.

thirty

gives the space that the tank 36 occupies under the action of the spring 37. The capacity 33 with a solution moves synchronously with the tank, which is lifted up by the nut 39, and lowered under its own weight, the nut 39 serves as a limiter. The level in the tank 36 is kept constant, which is set pipe 34. The tube 41 serves for random overflow of the solution and for directing it to the collector. Belt material 54 when drawn depending

The stems from the thickness are drawn out or compressed, i.e. pulsation occurs. In order to transfer the pulsation to the pump cell, a heated vacuum table 25 is installed.

On base 28 it is possible to change the position of the heated vacuum table 25 and fix it with the help of clips 29. In the lower part on the table mirror there are parallel grooves 32 perpendicular to the moving material with which vacuum is supplied through the holes 31. A heater 27 is installed on the opposite side of the table. When the coated material moves from the vacuum table and the rollers, heat is taken off due to the fact that the solution base consists of rapidly evaporating components that intensively evaporate from the surface of the tape material. Further along, in the upper part of the device, the coated material is dried by a counter-flow of air from the fan 50 through the heater 49. The blower 50 passes through the heater 49. The dried material with a layer applied on it is wound onto the holder roll 23. The installation is connected to the exhaust valve of

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Fig.Z

29

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31 ji

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54

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FIG. 6

Compiled by L. Yankovska

Editor L. GratilloTechred I. VeresKorrektor O. Lugova

Order 1186/12 Order 682 Subscription

VNIIPI USSR State Committee

for inventions and discoveries

113035, Moscow, Zh-35, Raushsk nab. 4/5

Branch PPP "Patent, Uzhgorod, st. Project, 4

Claims (5)

1. DEVICE FOR THE APPLICATION OF A LIQUID COATING COMPOSITION TO THE TAPE MATERIAL, containing a cuvette with front and rear knives, a belt pulling mechanism and a solution supply system, characterized in that, in order to increase productivity and improve the quality of the coating, the front cuvette knife is installed with the possibility rotation around the horizontal axis and is made with a flat surface, forming an acute angle with the direction of movement of the tape material. 2. The device according to π. 1, characterized in that it is equipped with a vacuum table with heating elements installed behind the cuvette in the direction of movement of the tape material. 3. The device according to π. 1, characterized in that the solution supply system comprises a buffer tank and a spring-loaded surge tank mounted on the rod with the possibility of synchronous movement. 4. The device according to π. 1, characterized in that it is equipped with mechanisms for unwinding and winding of tape material with friction and an intermediate shaft, while the drive shaft of the tape material pulling mechanism is connected to the clutch of the unwinding mechanism using a gear transmission, and with the clutch of the winding mechanism through the intermediate shaft through a chain transmission , a large sprocket of which is mounted on the drive shaft of the pulling mechanism, and a smaller one on the countershaft. 5. The device according to paragraphs. 1-4, characterized in that the vacuum table, the cuvette, the mechanism for pulling the tape and the mechanisms for unwinding and winding the tape material are mounted in a casing made of transparent material.