KR20240036958A - Flash―Spun Apparatus with Ionizer - Google Patents

Abstract

The present invention relates to a flash spinning device provided with an antistatic means. When filaments are stacked on a conveyor belt, the static electricity injected into the filaments is neutralized, thereby allowing the filaments to be easily stacked on the conveyor belt.

Description

Flash radiating device equipped with static electricity removal means {Flash―Spun Apparatus with Ionizer}

The present invention relates to a flash spinning device having an electrostatic discharge means, and more specifically, an electrostatic means that neutralizes the static electricity injected into the filament when the filament is stacked on the conveyor belt, so that the filament can be easily stacked on the conveyor belt. It relates to a flash radiation device having a.

In general, flash spinning is a modified form of spunbond technology, in which polymers such as polyethylene are melted and extruded, and the solvent is evaporated immediately after detention, so that individual fibers are collected in the form of fibrils on the lower conveyor belt (moving screen) to form a network structure. It is a forming technology. Flash spinning has been used to produce flexifilament film-fibril strands composed of microfibers.

Figure 1 is an example of a conventional flash spinning device. The main components of the conventional nonwoven fabric manufacturing device through flash spinning include a nozzle 16, a rotating reflector 26, a corona discharge device 28, a web former, and a conveyor belt 32. and a rolling part 29.

The moment the mixture of polymer and solvent in a supercritical fluid state is emitted into the atmosphere through the nozzle (16), the solvent vaporizes and the polymer filamentizes, and the filament forms a reticulated web due to collision and fluctuation with the rotating reflector (26). It is formed as (web). In flash spinning, after the spinning liquid collides with the rotating reflector 26, the web and solvent pass between the ground electrode and the needle electrode of the corona discharge device 28 located at the bottom, thereby obtaining the effect of opening the web by static electricity. In other words, by forcibly injecting either (+) or (-) charges into several strands of filament, each filament is spread evenly without tangling due to the repulsive force of the injected charges.

Meanwhile, as described above, the filament is spread evenly by static electricity generated by the corona discharge device 28, thereby obtaining the effect of opening the web. Then, the filament in which the web opening effect has occurred is moved to the conveyor belt 32 and then rolled into a non-woven fabric in the rolling unit 29. However, when filaments that have had a web opening effect due to static electricity are stacked on the conveyor belt 32, there is a problem in that the filaments are not effectively stacked on the conveyor belt 32 due to electrical repulsion.

US Patent Publication No. 10,337,123

The purpose of the present invention to solve the problems of the prior art as described above is to provide an antistatic means that neutralizes the static electricity injected into the filament when the filament is stacked on the conveyor belt, so that the filament can be easily stacked on the conveyor belt. A flash emission device is provided.

In order to achieve the above object, the present invention includes a nozzle that forms a continuous filament by extruding and spinning a supercritical fluid mixed with a solvent and a high molecular weight polymer; A reflector formed in a plate shape made of metal and on one side causes the filaments emitted from the nozzle to collide to form a web; an upper cover positioned to be spaced above the other side of the reflector and guiding the travel direction of the web, whose travel path has changed in one direction as it collides with the reflector, to the other direction; a corona discharge member formed on the inner surface of the upper cover and applying static electricity to open the web; A conveyor belt in which webs whose travel paths have changed by colliding with the upper cover are stacked to form a sheet; and an electrostatic discharge means provided between the reflector and the conveyor belt to neutralize static electricity imparted to the opened web by the corona discharge member.

In addition, the static electricity elimination means includes: a body mounted in front of the reflector and formed in a bar shape; and an ion generator located inside the main body and generating ions, wherein the ions generated by the ion generator are emitted in the direction of the conveyor belt and neutralize static electricity applied to the web moving in the direction of the conveyor belt. Provided is a flash radiating device having a static electricity eliminating means.

In addition, the main body is rotatably mounted on the reflector, and the reflector is configured to be rotated by a drive motor.

In addition, a flash emission device using an upper cover is provided, wherein the upper cover is configured to slide forward and backward along the longitudinal direction of the reflector.

In addition, a flash radiation device provided with a static discharge means is provided, wherein the length of the main body is formed to be longer than the width of the conveyor belt.

In addition, the antistatic means further includes an air discharge unit located on one side of the antistatic means, wherein the air discharge unit discharges air to guide a web from the upper cover toward the antistatic means toward the conveyor belt. It provides a flash radiation device having a.

In addition, it further includes a frame member that moves the reflector up and down, wherein the frame member includes a first frame on one side supported by the conveyor belt or the ground and the other side protruding in the direction of the reflector, and an upper side of the first frame a guide groove formed concave downward, a second frame on one side of which is installed to be movable up and down in the guide groove and on the other side connected to the reflector, and which is seated at the bottom of the guide groove and moves the second frame up and down. Provided is a flash radiating device having a static electricity removal means, including a cylinder, wherein the height of the reflector changes as the cylinder moves the second frame up and down.

In the present invention, the ions generated by the ion generator are released to the web moving in the direction of the conveyor belt, so the static electricity given to the web is neutralized and no electrical repulsion is generated, so the web moving to the conveyor belt is opened to an appropriate width. It has the effect of being easily stacked on the conveyor belt in an advanced state.

Figure 1 is a diagram showing a conventional flash radiation device.
Figure 2 is a diagram illustrating a flash radiation device equipped with static electricity removal means according to a preferred embodiment of the present invention.
Figure 3 is a diagram schematically showing a flash radiation device equipped with a static electricity removal means according to a preferred embodiment of the present invention.
Figure 4 is a diagram schematically showing a static electricity removal means according to a preferred embodiment of the present invention.
Figure 5 is a diagram schematically showing a state in which the static electricity elimination means is rotated according to a preferred embodiment of the present invention.
Figure 6 is a diagram schematically showing an air discharge unit according to a preferred embodiment of the present invention.
Figure 7 is a diagram schematically showing a frame member according to a preferred embodiment of the present invention.
Figure 8 is a diagram illustrating a flash radiation method including a static electricity removal means according to a preferred embodiment of the present invention.

Hereinafter, a flash radiation device including a static electricity removal means according to a preferred embodiment of the present invention will be described in more detail with reference to the attached drawings.

Figure 2 is a diagram illustrating a flash radiating device equipped with a static discharge means according to a preferred embodiment of the present invention, and Figure 3 is a diagram schematically showing a flash radiating device equipped with a static discharge means according to a preferred embodiment of the present invention. am.

Referring to Figures 2 and 3, the flash radiation device equipped with a static discharge means according to a preferred embodiment of the present invention includes a nozzle 100, a reflector 200, an upper cover 300, an inclined portion 302, and a corona discharge. It includes a member 400, an antistatic means 500, and a conveyor belt 600, and may further include a frame member 700.

The nozzle 100 melts and spins a supercritical fluid of solvent and high molecular weight polymer. The high molecular weight polymer may be composed of, for example, a thermoplastic resin. Then, the supercritical fluid of solvent and polymer is emitted from the nozzle 100 in the form of a high-speed air stream and then exposed to low temperature/low pressure or room temperature/normal pressure, the solvent is instantaneously evaporated, and the polymer is formed into a continuous filament.

The reflector 200 may be formed in a rectangular plate shape, for example, and may be made of a metal having a charge donating capacity. This reflector 200 may be positioned below the nozzle 100 to face the nozzle 100. At this time, one side of the reflector 200 is positioned to face the nozzle 100, and the other side of the reflector 200 is inclined to be slightly lower than one side of the reflector 200. Then, the fibers radiated from the nozzle 100 in the form of filaments collide with one side of the metal reflector 200, causing airflow diffusion and frictional charging to form a reticulated web with a certain width. Corona discharge by the corona discharge member 400, which will be described later, is performed on the unfolded reticulated web to prevent the filament from returning to its original state. This will be described later.

The upper cover 300 is positioned above and spaced apart from the other side of the reflector 200. The upper cover 300 may be formed in a rectangular plate shape like the reflector 200, and may be sized to cover the upper side of the other side of the reflector 200 that is not facing the nozzle 100. As this upper cover 300 collides with one side of the reflector 200, the web whose travel path changes upward collides. And the web that collides with the upper cover 300 is guided in a downward direction. That is, since the upper cover 300 is provided on top of the reflector 200, the collision angle of the filament is appropriately adjusted downward.

The inclined portion 302 is formed to be inclined at an end of the upper cover 300. In detail, the inclined portion 302 is positioned so that one end of the upper cover 300 faces the reflector 200, and the upper cover 300 ) When the other end extends in the outer direction of the reflector 200, the other end of the upper cover 300 may be formed to be inclined downward. The inclined portion 302 has the effect of guiding the travel path of the web colliding with the upper cover 300 further downward.

Meanwhile, the upper cover 300 may be configured to be movable in the forward and backward directions. For example, a pair of side wall portions 210 are protruding on both sides of the reflector 200 in the longitudinal direction, and a guide rail 220 is concave along the inner longitudinal direction of the pair of side wall portions 210 facing each other. is formed And guide parts (not shown) are protrudingly formed on both sides of the upper cover 300 to slide along the guide rail 220 while being inserted into the guide rail 220. And a moving means (not shown) such as a chain slides and moves the guide part. In this way, since the upper cover 300 can move in the forward and backward directions, it is possible to flexibly cope with the collision position of the filament whose traveling path changes upward when it collides with the reflector 200. For example, if the speed of the filament extruded from the nozzle 100 is lower or higher than a preset value, the collision position of the filament colliding with the upper cover 300 may be changed. At this time, the present invention can appropriately move the position of the upper cover 300 forward or backward, so that the collision position of the filament colliding with the upper cover 300 can be flexibly adjusted depending on the situation.

The corona discharge member 400 includes a first electrode (not shown) and a second electrode 410. The first electrode may be formed, for example, on the inner surface of the reflector 200. The second electrode 410 is formed on the inner surface of the upper cover 300 facing the reflector 200. And when the web that collides with the reflector 200 passes between the high-voltage first and second electrodes 410, the first and second electrodes 410 impart static electricity by corona discharge to the web. Then, positive or negative charges are forcibly injected into the multi-stranded thin web due to the repulsive force of static electricity, and the repulsive force of the injected charges causes each filament to spread evenly across the width, creating a wide opening width. and ensure that the opening rate is greatly improved. In this way, static electricity is applied to the reticulated web by corona discharge, so each filament continuously maintains its opened state using electrical repulsion.

And if the end of the second electrode 410 is formed sharply, contaminants may attach or deposit on the end of the second electrode 410. In order to solve this problem, the present invention is configured to form the end of the second electrode 410 to be curved. Since the end of the second electrode 410 is formed to be curved in this way, there is an effect that contaminants do not adhere to or accumulate on the end of the second electrode 410.

Meanwhile, if we look at the effect of temperature and humidity on corona discharge, if the temperature rises, the voltage required for a certain current flow decreases in both positive and negative discharge. In other words, corona discharge is promoted. It can be said that discharge is promoted as the free path distance of electrons increases, the electron energy until the next collision increases, and ionization is promoted.

Additionally, at a constant temperature, discharge is suppressed as relative humidity increases. When relative humidity increases, ion activity is suppressed and thus discharge is suppressed. In general, if the environment is dry, the static charge becomes stronger as the days pass. Conversely, the higher the humidity, the lower the electrostatic charge. Comparatively, water is a better conductor than most plastics. When water molecules in the moisture in the atmosphere are placed on a surface, the electrostatic charge of the material tends to dissipate the molecules to the ground.

The static electricity elimination means 500 is provided between the reflector 200 and the conveyor belt 600 and is configured to neutralize static electricity imparted to the web opened by the corona discharge member 400. The detailed structure of the static electricity elimination means 500 will be described in FIG. 4.

The conveyor belt 600 collides with the upper cover 300 and causes webs whose travel paths change downward to be stacked to form a sheet. Then, the rolling unit 610 unwinds the sheets laminated on the conveyor belt 600 in the form of a roll to form a non-woven fabric. The nonwoven fabric formed in this way may be able to adjust flexibility, water permeability, breathability, etc. by adding a predetermined process.

The frame member 700 is used, for example, to adjust the distance between the nozzle 100 and the reflector 200 by allowing the reflector 200 to move up and down, which will be described with reference to FIG. 7.

Figure 4 is a diagram schematically showing a static discharge means according to a preferred embodiment of the present invention, and Figure 5 is a diagram schematically showing a state in which the static discharge means according to a preferred embodiment of the present invention is rotated.

Referring to Figures 2 to 5, the static electricity removal means 500 includes a main body 510 and an ion generating unit 520. The main body 510 is mounted in front of the reflector 200 and is formed in a bar shape. For example, the main body 510 is mounted between the front sides of the pair of side wall portions 210. A plurality of inlet holes 512 are formed through the upper side of the main body 510, and a plurality of outlet holes 514 are formed through the lower side of the main body 510. Additionally, a drive motor 530 is connected to one side of the main body 510 to rotate the main body 510.

The ion generating unit 520 is located inside the main body 510 and generates ions. The power supply unit 522 is formed in a rod type to apply power, and extends along the longitudinal direction of the power unit 522 to discharge the power. It includes a plurality of electrode portions 524 formed. And the ions generated in the ion generator 520 are discharged in the direction of the conveyor belt 600 through the outlet hole 514 along with the gas supplied into the main body 510 from the inlet hole 512, thereby forming the conveyor belt 600. The static electricity imparted to the web moving in this direction is neutralized. That is, the charged particles of the web moving from the upper cover 300 to the conveyor belt 600 are neutralized by the ions generated in the ion generator 520. This invention can neutralize charged particles in the web by ionizing them using high voltage supplied to the power supply unit 522. That is, since many negative ions are generated around the power supply unit 522, the positive charge of the filament can be neutralized at high speed.

In this way, in the present invention, the ions generated by the ion generator 520 are released to the web moving in the direction of the conveyor belt 600, so the static electricity given to the web is neutralized and no electrical repulsion is generated, so that the conveyor belt 600 ) has the effect of being easily stacked on the conveyor belt 600 with the web being opened to an appropriate width. In addition, dust does not stick to the web moving on the conveyor belt 600, which has the effect of preventing product contamination. In addition, since the drive motor 530 is configured to rotate the main body 510, the outlet hole 514 of the main body 510 according to the angle of the web moving from the upper cover 300 to the conveyor belt 600. There is an effect of controlling the opening width of the web by appropriately adjusting the angle of the ions emitted from the . In addition, the drive motor 530 emits water from the outlet hole 514 of the main body 510 according to the angle of the web moving in the direction of the conveyor belt 600 due to a change in the position of the upper cover 300 moving in the front and rear direction. There is an effect of controlling the opening width of the web by appropriately adjusting the angle of the ion.

And the length (L) of the main body 510 may be formed to be longer than the width (W) of the conveyor belt 600. Then, the ions emitted from the outlet 514 of the main body 510 are emitted to a wider range than the width of the conveyor belt 600, so that the static electricity imparted to the web moving in the direction of the conveyor belt 600 is sufficiently neutralized. There is an effect that can be achieved.

Meanwhile, general methods for removing static electricity include removal methods using the humidity of the material, removal methods using other materials in contact with the surface, removal methods using ionization in the surrounding air, removal methods using voltage, and sparking. There is a method of using surface voltage to make the air conductive. The present invention removes static electricity using voltage, for example, AC removal method and pulse DC removal method can be applied.

AC rejection is mainly used at high frequencies (supply frequencies). The voltage using an outlet such as 110 or 240 increases significantly to produce voltages between 4.5 and 7 kV when using a ferro-resonating transformer (Meech Model 904). Even if the bar is grounded, the same high voltage goes into the ionizing pin. A cloud of positive and negative charges is created around the ion pin. In the absence of external influence, positive and negative charges are attracted to each other or to the ground. So they either neutralize each other or move towards the ground. However, due to nearby electrostatic charges, ions are attracted to the opposite charge on the material surface. At the material surface, electrons are exchanged and the surface is neutralized. The surface is completely neutralized because ionization in the bar does not depend on the surface charge and does not depend on how close the ion is to the surface charge.

Pulsed DC ablation uses high voltage to ionize the air. While AC rejection operates at higher frequencies, pulsed DC rejection operates at lower frequencies. The Meech Model 977v2 operates from 0.5 to 20 Hz. 977v2 also exhibits an output voltage of 6 to 14 kV between peaks. The ion bar consists of emitters coupled to the negative or positive output terminals of the 977v2. Looking at the positive half of the wave, we can see that the controller is connected to the high output terminal, which is connected to the positive remover side. This creates an electric field between the emitter and a surrounding grounded object. At the sharp end of the remover, this electric field is extremely strong. Cations are then formed in a similar way to AC removal. The similar charges of the ions and the remover cause the ions to fall off the bar.

In this way, the pulse DC removal method uses a low frequency range that is safe for workers working around the static electricity removal means 500, and is effective in preventing electrical safety accidents in advance.

Figure 6 is a diagram schematically showing an air discharge unit according to a preferred embodiment of the present invention.

Referring to Figures 2 to 6, since the static electricity removal means 500 is located on the side of the reflector 200, the web guided from the upper cover 300 toward the conveyor belt 600 is neutralized by the static electricity elimination means 500. Before it proceeds, there is a risk that it may be laminated on the main body 510 of the static electricity removal means 500. In addition, there is a risk of condensation occurring on the outer surface of the main body 510 of the static electricity removal means 500 due to vaporization of the solvent emitted from the nozzle 100.

In order to solve this problem, the present invention further includes an air discharge unit 550 on one side of the static electricity removal means 500. The air discharge unit 550 may be installed between the upper cover 300 and the static electricity removal means 500 while being supported on the side wall 210, for example. And the air discharge unit 550 discharges air downward to guide the web from the upper cover 300 toward the static electricity removal means 500 toward the conveyor belt 600.

Since air is discharged downward from the air discharge unit 550 in this way, the web heading from the upper cover 300 toward the static electricity removal means 500 is guided downward, preventing the web from being stacked on the main body 510, and main body ( 510) has the effect of preventing condensation from occurring on the outer surface.

Figure 7 is a diagram schematically showing a frame member according to a preferred embodiment of the present invention.

Referring to FIGS. 2 and 7 , the frame member 700 moves the reflector 200 up and down and includes a first frame 710, a second frame 720, and a cylinder 730.

One side of the first frame 710 is supported by the conveyor belt 600 or the ground, and the other side protrudes in the direction of the reflector 200. And a guide groove 712 is formed concave downward on the upper side of the first frame 710. One side of the second frame 720 is installed to be movable up and down in the guide groove 712, and the other side is connected to the reflector 200. The cylinder 730 is seated at the bottom of the guide groove 712 and moves the second frame 720 up and down. Additionally, the cylinder 730 may be composed of a hydraulic cylinder 730, etc., and as the cylinder 730 moves the second frame 720 up and down, the height of the reflector 200 changes.

Since the height of the reflector 200 can be changed in this way, the separation distance between the reflector 200 and the nozzle 100 is adjusted, which has the effect of making it possible to set a position value for falling from the nozzle 100 to the reflector 200. In one embodiment of the present invention, the reflector 200 is configured to be adjustable in height, but this is only an example, and in some cases, the nozzle 100 may be configured to be adjustable in height.

Meanwhile, the other side of the second frame 720 may be configured to be rotatable relative to the side wall portion 210 by the rotation axis 722. And since the side wall 210 is connected to the reflector 200 and the upper cover 300, the angles of the reflector 200 and the upper cover 300 can be adjusted by rotating the side wall 210. In this way, the angle of the reflector 200 and the upper cover 300 can be adjusted, so the angle of the web that collides with the reflector 200 and is reflected in the direction of the upper cover 300 can be adjusted and the conveyor belt ( This has the effect of making it possible to adjust the angle of the web reflected in the 600) direction.

Hereinafter, a flash radiation method including a static electricity removal means according to a preferred embodiment of the present invention will be described.

Figure 8 is a diagram illustrating a flash radiation method including a static electricity removal means according to a preferred embodiment of the present invention.

Referring to the drawing, a spinning process (S10) in which a supercritical fluid mixed with a solvent and a high molecular weight polymer is extruded and spun from a nozzle 100 to form a filament; A web forming process (S20) in which the filament emitted from the nozzle 100 collides with the reflector 200 to form a web of a certain width; A path change process (S30) in which the web, whose travel path changes upward as it collides with the reflector 200, is guided downward as it collides with the upper cover 300; A corona discharge process (S40) to obtain an opening effect by applying static electricity to the web through the corona discharge member 400 formed on the inner surface of the upper cover 300; A static electricity removal process (S50) in which the static electricity removal means 500 provided between the reflector 200 and the conveyor belt 600 neutralizes static electricity imparted to the web opened by the corona discharge member 400; A web stacking process (S60) of forming a sheet shape by stacking a web on the conveyor belt 600; and a rolling process (S70) of unwinding the sheets stacked on the conveyor belt 600 to the rolling unit 610.

The spinning process (S10) is a process in which the supercritical fluid of solvent and polymer is extruded and radiated from the nozzle 100 in the direction of the reflector 200.

The web forming process (S20) is a process in which the fibers radiated from the nozzle 100 in the form of filaments collide with one side of the metal reflector 200, causing frictional charging to form a reticulated web with a certain width. am.

The path change process (S30) is a process in which the web, whose travel path has changed upward as it collides with one side of the reflector 200, collides with the upper cover 300 to guide the web's travel direction downward. Here, the upper cover 300 may be slidably moved forward and backward along the longitudinal direction of the reflector 200. In this way, since the upper cover 300 can move in the forward and backward directions, it is possible to flexibly cope with the collision position of the filament whose traveling path changes upward when it collides with the reflector 200.

The corona discharge process (S40) is when the web that collided with the reflector 200 passes between the high-voltage first and second electrodes 410, and the first and second electrodes 410 are applied to the web by corona discharge. It is a process that imparts static electricity. The web is evenly separated from each other in the width direction by the repulsive force of static electricity to have a wide opening width and greatly improve the opening rate.

The static electricity removal process (S50) causes the ions generated by the static electricity removal means 500 to be discharged to the web moving in the direction of the conveyor belt 600, so that the static electricity applied to the web is neutralized and electrical repulsion is not generated. Accordingly, the web moved to the conveyor belt 600 has the effect of being easily stacked on the conveyor belt 600 while being opened to an appropriate width.

In the web stacking process (S60), the web whose travel path changes downward after colliding with the upper cover 300 is stacked to form a sheet. In the rolling process (S70), the rolling unit 610 unwinds the sheets stacked on the conveyor belt 600 in the form of a roll to form a nonwoven fabric.

Although the present invention has been described in detail in the above embodiments, it is obvious that the present invention is not limited thereto, and it is clear to those skilled in the art that various changes and modifications are possible within the scope of the technical idea of the present invention, and such changes and modifications are attached. If it falls within the scope of the claims, the technical idea should also be considered as belonging to the present invention.

100: nozzle
200: reflector
210: side wall 220: guide rail
230: means of transportation 232: chain
234: Sprocket 236: Rotating roller
300: Top cover
302: inclined portion
400: Corona discharge member
410: second electrode
500: Antistatic means
510: main body 512: inlet hole
514: Outflow hole 520: Ion generation unit
522: power unit 524: electrode unit
530: Drive motor
550: Air discharge unit
600: Conveyor belt
610: Rolling unit
700: Frame member
710: First frame 712: Guide groove
720: second frame 722: rotation axis
730: cylinder

Claims (7)

A nozzle that forms a continuous filament by extruding and spinning a supercritical fluid mixed with a solvent and a high molecular weight polymer;
A reflector formed in a plate shape made of metal and on one side causes the filaments emitted from the nozzle to collide to form a web;
an upper cover positioned to be spaced above the other side of the reflector and guiding the travel direction of the web, whose travel path has changed in one direction as it collides with the reflector, to the other direction;
a corona discharge member formed on the inner surface of the upper cover and applying static electricity to open the web;
A conveyor belt in which webs whose travel paths have changed by colliding with the upper cover are stacked to form a sheet; and
A flash emitting device having a static electricity eliminating means, characterized in that it includes a static electricity eliminating means provided between the reflector and the conveyor belt to neutralize static electricity imparted to the web opened by the corona discharge member.
According to claim 1,
The static electricity removal means is:
a main body mounted in front of the reflector and formed in a bar shape; and
It is located inside the main body and includes an ion generating unit that generates ions,
A flash radiation device having a static electricity eliminating means, wherein the ions generated in the ion generator are emitted in the direction of the conveyor belt and neutralize static electricity applied to the web moving in the direction of the conveyor belt.
According to claim 2,
The main body is rotatably mounted on the reflector,
A flash emission device having a static electricity removal means, wherein the reflector is configured to be rotated by a drive motor.
According to claim 3,
A flash radiation device having an electrostatic discharge means, wherein the upper cover is configured to slide in a front-back direction along the longitudinal direction of the reflector.
According to claim 2,
A flash radiation device having a static electricity eliminating means, wherein the length of the main body is formed to be longer than the width of the conveyor belt.
According to claim 1,
Further comprising an air discharge unit located on one side of the static electricity removal means,
Wherein the air discharge unit discharges air to guide a web from the upper cover toward the antistatic means toward the conveyor belt.
According to claim 1,
Further comprising a frame member that moves the reflector up and down,
The frame member includes a first frame on one side supported by the conveyor belt or the ground and the other side protruding in the direction of the reflector, a guide groove formed concave downward on the upper side of the first frame, and one side on the guide It includes a second frame installed in the groove to be movable up and down and the other side connected to the reflector, and a cylinder seated at the bottom of the guide groove and moving the second frame up and down,
A flash emission device having a static electricity elimination means, wherein the height of the reflector changes as the cylinder moves the second frame up and down.

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