KR200197767Y1 - Coating apparatus for paper - Google Patents

Abstract

The present invention spreads the water-based adhesive evenly on the coating roller and then applied to the film to be dried in the drying unit, because the water-based adhesive during the drying process does not generate toxic substances such as toluene, reducing environmental pollution and working environment The present invention relates to a paper coating apparatus to be improved, and in particular, a coating part for applying an adhesive to a film as the film passes through a coating roller with an aqueous adhesive, and a film with the adhesive to be moved along the guide rollers, It consists of a drying unit to allow the moisture of the pressure-sensitive adhesive to evaporate, and a film passing through the drying unit and the printing paper between the pair of paper rollers so that the film is coated on the printing paper.

Description

Coating apparatus for paper

The present invention relates to a paper coating apparatus, and more particularly, by applying the water-based adhesive evenly spread on the coating roller and applied to the film, the applicability of the water-based adhesive is improved to improve the adhesiveness with the printing paper to use the oil-based adhesive It relates to a paper coating device that is environmentally friendly and does not generate pollutants at the time.

In general, the coating apparatus is to coat a thin transparent film on the surface of the printed paper on which the desired content is printed so that the printed paper is glossy and does not change well even when wet with water. The coating apparatus is configured such that the pressure-sensitive adhesive on the coating roller is transferred to the coating film as the coating film rolled in the roll state passes between the coating rollers.

The coating film on which the pressure-sensitive adhesive is applied is kept in a constant viscosity as the volatiles fly through the drying part. The coating film passed through the drying unit is finally combined in the printing paper and the lamination portion is coated and configured to be cut to a certain length in the cut portion.

However, since the conventional coating apparatus uses an oil-based adhesive, there is a problem in that toluene, which is a volatile substance, is released into the atmosphere during the drying of the adhesive. Because toluene is a toxic substance, it is not only bad for the health of workers, but also has a problem such as toluene released into the atmosphere to contaminate air.

The present invention was developed in view of the conventional problems, and an object of the present invention is to spread the aqueous adhesive evenly on the coating roller and then applied to the film to be dried in the drying unit, so that the aqueous adhesive in the drying process and toluene and It is to provide a paper coating apparatus that reduces the environmental pollution and improves the working environment because the same toxic substances are not generated.

1 is a front view of the coating device of the present invention

2 is a cross-sectional view showing a coating portion of the coating device of the present invention

3 is a cross-sectional view showing a drying part of the coating device of the present invention

Figure 4 is a cross-sectional view showing the exhaust portion of the coating device of the present invention

5 is a front view showing another embodiment of the coating device of the present invention

<Code Description of Main Parts of Drawing>

1: film

2: printing paper

3: adhesive

10: coating part

11: coating roller

12: coating film control roller

13: coating film removal roller

14 blade

15: container

20: drying part

21: drying furnace

22: guide roller

23: heater assembly

23a: fan

24: hot air jet pipe

24a: discharge port

25 exhaust pipe

25a: inlet

26: heating roller

30: lamination part

31: paper roller

40: loading part

50: cutting part

60: finished goods loading department

70: release agent coating part

71: adhesive coating

72: drying unit

73: lamination

74: winding part

75: release paper

76: Art Paper

In order to achieve the above object, the present invention provides a coating part for applying a pressure-sensitive adhesive to a film as the film passes through a coating roller with an aqueous pressure-sensitive adhesive. It consists of a drying unit to allow the moisture of the evaporation, the film passing through the drying unit and the printing paper to pass between the pair of paper rollers to the film is coated on the printing paper.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a front view of the coating device of the present invention, Figure 2 is a cross-sectional view showing a coating of the coating device of the present invention. The coating apparatus of the present invention includes a coating unit 10 for applying an adhesive to a rolled film 1 in a roll state, a drying unit 20 for drying the adhesive applied to the film, and a printing paper 2 for coating a film. Branch portion 30, and the cut portion 50 for cutting the coated printing paper to the desired size.

The coating part 10 is provided with a rectangular body and a container 15 to which the adhesive 3 is supplied to the inside of the coating part body. And the upper part of the container 15 is provided with a coating roller 11 partially immersed in the pressure-sensitive adhesive (3). The coating roller 11 has a very high surface processing accuracy and is smoothly processed so that the adhesive 3 can be uniformly spread. In addition, the coating unit 10 and the successive coating film control roller 12 and the coating film removal roller 13 is provided. These rollers 12 and 13 are provided so as not to be immersed in the pressure-sensitive adhesive (3) and the coating film control roller 12 is adjusted to move toward the coating roller 11 and the thickness of the coating film is adjusted according to the distance between these rollers.

The coating film removal roller 13 is for removing the adhesive 3 adhered to the surface of the coating film control roller 12 and a plurality of blades 14 are formed on the outer circumferential surface thereof. The drying unit 20 is to maintain a constant viscosity by drying the pressure-sensitive adhesive (3) attached to the film (1) is provided with a drying furnace 21 connecting the coating portion 10 and the lamination portion (30).

The drying furnace 21 serves as a kind of duct and is provided such that the film 1 passes through the inside of the drying furnace 21. In addition, a plurality of guide rollers 22 supporting the moving film 1 are provided in the drying furnace 21, and hot air spray pipes 24 spraying hot air toward the film 1 in the drying furnace 21. ) Is provided with a plurality. Each hot air jet pipe 24 is formed with a discharge port 24a opened toward the film 1, and these hot air jet pipes 24 are connected to the heater assembly 23 provided on the drying furnace 21.

3 is a cross-sectional view showing a drying part of the coating device of the present invention, Figure 4 is a cross-sectional view showing the exhaust portion of the coating device of the present invention. The heater assembly 23 is provided with a coil heater in a lattice shape therein, and is configured such that the wind blown from the rear fan 23a is changed to hot air in the course of passing through the heater. And the heater assembly 23 and each hot air spray pipe 24 is connected through the induction pipe (23b). In addition, an exhaust pipe 25 for exhausting water vapor and the like generated from the pressure-sensitive adhesive 3 of the film being dried is provided inside the drying furnace 21. A plurality of these exhaust pipes 25 are provided, and each exhaust pipe 25 is provided with a suction port 25a for absorbing water vapor. These exhaust pipes 25 are connected to an exhaust fan (not shown), and the exhaust gas (water vapor) is exhausted to the outside.

A heating roller 26 for directly heating the film 1 is provided at the connection portion between the coating portion 10 and the drying furnace 21 and the connection portion between the lamination portion 30 and the drying furnace 21. These heating rollers 26 have a heating coil embedded therein to allow the passing film to be directly heated. In addition, a plurality of hot air spray pipes 24 are successively provided on the upper portion of each heating roller 26, and hot air is concentrated on the surface of the film 1 that is directly heated.

The stacking unit 30 has a rectangular shape and is connected to a stacking unit 40 on which printing paper 2 is loaded. The stacking portion 40 on which printing paper is loaded includes a feeding portion for transferring printing paper one by one, and the paper portion 30 and the loading portion 40 are connected to each other through the feeding portion. The lamination section 30 is provided with a pair of lamination rollers 31 for laminating the passing film 1 and the printed paper 2 supplied in the sheet. When the film 1 and the printing paper 2 pass between these lamination rollers 31, the film is pressure-coated to the printing paper by the pressing force of these rollers.

In front of the lamination portion 30 is provided with a cut portion 50 for cutting the continuous film (1). The cutting unit 50 cuts the continuous film so that printed paper falls into sheets, and the printed paper dropped into these sheets is finally loaded into the finished product loading unit 60.

The present invention configured as described above has the advantage that no harmful substances are generated during its drying process since the adhesive 3 is made of water, while the technology of uniformly applying the coating roller 11 is difficult. The coating device has not been developed. The present invention is achieved by the coating roller 11, the coating film control roller 12 and the coating film removal roller 13 as a solution to this. As shown in FIG. 2, the coating roller 11 is precisely machined to have a high surface precision. And the coating film control roller 12 and the coating film removal roller 13 is provided so as to lie on the same center line as the coating roller 11, respectively. The coating film control roller 12 is also processed to have a high surface precision, and the coating film control roller 12 is provided to move and adjust toward the coating roller 11.

The coating film thickness of the pressure-sensitive adhesive (3) is adjusted according to the distance between these rollers (11) (12) and the coating film control roller 12 is provided to contact the coating film removal roller (13). Since a plurality of blades 14 are formed in the coating film removing roller 13, the blades 14 of the coating film removing roller 13 are rotated while these rollers 11, 12 and 13 are rotated in the same clockwise direction. As a result, the pressure-sensitive adhesive 3 does not adhere to the surface of the coating film control roller 12. When the coating film control roller 12 without the adhesive 3 is rotated in the same direction as the coating roller 11, the adhesive 3 buried in the coating roller 11 is controlled by the coating film control roller 12.

The coating roller 11 continues to rotate while the adhesive 3 adheres to the surface of the coating roller 11 in the process of being rotated toward the container 15 containing the adhesive 3. At this time, the coating roller 11 has a non-uniform thickness and spreading of the pressure-sensitive adhesive, but the pressure-sensitive adhesive (3) is pressurized while passing through the coating film control roller 12 to spread widely and the thickness of the coating roller is kept constant ( 11) is applied.

When the pressure-sensitive adhesive is applied to the coating roller 11 with a uniform thickness and area, the pressure-sensitive adhesive 3 is transferred to the surface of the film 1 to be transported in contact with the coating roller 11. The above process takes place continuously. When the adhesive 3 is deposited on the film 1, the film 1 is heated while passing through the heating roller 26 and the hot air spray pipe 24 directly above the coating roller 11. And the adhesive 3 of the film is dried. The drying furnace 21 is manufactured to a certain length so that the adhesive 3 of the film 1 is sufficiently dried, and harmless gases such as water vapor generated in the drying process are discharged to the outside through the exhaust pipe 25.

The film 1 sufficiently dried in the drying furnace 21 is coated with the printing paper 2 in the lamination section 30. The paper portion 30 is a place where the printing paper 2 supplied in a single sheet from the stacking portion 40 meets the film 1 supplied continuously, where the film 1 and the printing paper 2 are laminated. While these films and printing paper pass through a pair of paper rollers 31, the film is firmly coated on the printing paper by the pressing force. And after the film is cut so that the printed paper consisting of a single sheet in the cut section 50 is cut and finally coated printing paper is loaded on the finished product loading part (60).

Figure 5 is a front view showing another embodiment of the coating device of the present invention, after applying the release agent to the release paper, the adhesive is applied to the surface of the release agent again and laminated on art paper and film to produce aka stickers of the present invention. It has the same configuration as the coating apparatus.

The coating apparatus of another embodiment of the present invention is a release agent coating part 70 for coating a release agent on a release paper 75, an adhesive coating part 71 for coating an adhesive on a release paper 75 coated with a release agent, a release paper A heater assembly 72a for blowing hot air into the drying furnace 72 through which the 75 passes, and a winding portion 74 and a release paper 75 for winding the release paper 75 passing through the drying furnace 21. And a lamination section 73 for laminating the art paper 76.

The coating device according to another embodiment of the present invention configured as described above is provided with a coating roller, a coating film control roller, and a coating film removing roller in the release agent coating part 71 and the adhesive coating part 70. By these rollers, the coating thickness and area of the release agent and pressure-sensitive adhesive applied to the surface of the coating roller are kept uniform. The coating process is as follows.

The release agent 75 dried in the roll state is uniformly applied to the surface thereof while the release agent coating portion passes. The release paper coated with the release agent is dried while passing through the drying furnace 72 and then wound in the winding unit 74. The release paper wound on the winding part is hung again on the adhesive coating part 70 so that the adhesive is coated on its surface. And if it passes the drying furnace 21, it goes to the lamination part 73 in the state which the adhesive adhered to the surface of the release paper 75. When the release paper 75 and the art paper 76 are laminated at the paper portion 73, the adhesive on the surface of the release paper 75 is transferred to the art paper 76, and the art paper has adhesive force. Therefore, when the art paper 76 is peeled off from the release paper 75, it can be attached to a desired place like an adhesive tape.

According to the present invention as described above is provided with a coating film control roller and the coating film removal roller in contact with the coating roller so that the aqueous pressure-sensitive adhesive is uniformly applied to the surface of the coating roller. These film control and removal rollers uniformly distribute the thickness and area of the adhesive applied to the surface of the coating roller, making it possible to apply an aqueous adhesive to the surface of the film. This can improve the working environment and reduce air pollution.

Claims (4)

The coating part 10 which allows the adhesive to be applied to the film as the film 1 passes through the coating roller 11 on which the aqueous adhesive 3 is attached, The drying unit 20 to allow the film with the pressure-sensitive adhesive is moved along the guide rollers 22 and the moisture of the pressure-sensitive adhesive is evaporated by hot air during the movement. Paper coating, characterized in that consisting of a laminated sheet 30 to pass the film 1 and the printing paper 2 passed through the drying unit 20 between a pair of paper roller 31 to be coated on the printing paper Device. The coating film removal roller 13 according to claim 1, wherein the coating film control roller 12 is provided so as to be close to the coating roller 11, and the coating film removal roller 13 has a blade 14 for removing the adhesive 3 adhered to the coating film control roller 12. And the rollers 11, 12, 13 are rotated in the same direction, characterized in that configured to adjust the coating thickness of the adhesive (3) on the coating roller 11 by the coating film control roller 12 Paper coating equipment. According to claim 1, wherein a plurality of hot air blowing pipes 24 for injecting hot air toward the pressure-sensitive adhesive 3 of the film 1 is provided in the drying unit 20, each of the hot air powder outside the drying unit 20 A fan 23a and a heater assembly 23 for supplying hot air to the pipe 24 are provided, respectively, and an exhaust pipe 25 for exhausting water vapor generated from a pressure-sensitive adhesive under drying is provided inside the drying unit 20. Paper coating device characterized in that. The heating roller 26 of claim 1, further comprising a heating roller 26 for directly heating the adhesive film to which the adhesive 1 is applied while passing through the coating roller 11, the upper portion of the heating roller 26. The paper coating device, characterized in that the hot air blowing tube 24 for intensively spraying hot air toward the film (1).