KR101530927B1 - Apparatus for peeling waste PET film coated viscidity material for recycle - Google Patents

Abstract

The present invention relates to a peeling apparatus for recycling a waste PET film coated with a viscosity material, and aims to provide a peeling apparatus which winds a thin film layer composed of a functional material of the viscosity material coated on the surface of the waste PET film determined as a faulty product in production while tension is permitted, removes the same by using a blade where water is discharged, and collects a removed film ground and the water through a variable water collecting support portion. The present invention comprises: a rotation pulley installed in one side end of a main body frame, and shaft-combining with a roll shaft where the waste pet film is wound; a driving pulley installed in the other side end, and shaft-combining with a winding roll shaft connected to the other side end of the waste pet film; a motor for delivering a driving force to the driving pulley, and rotating the rotation pulley connected to a belt; a first compress roller element and a second compress roller element for supporting the waste PET film and permitting the tension; the blade for removing the thin film layer formed on the surface of the waste PET film transferring toward the winding roll shaft, and having a water discharge pipe formed inside in order to remove a thin film layer ground by discharging the high-pressure water at the same time; and the variable water collecting support portion for collecting the water discharged from the water discharge pipe and the removed film layer ground, and supporting a lower portion of the blade.

Description

TECHNICAL FIELD [0001] The present invention relates to a PET film-coated viscidity material for recycle,

The present invention relates to a peeling apparatus for recycling a waste PET film coated with a viscous material, and in detail, in order to recycle the waste PET film, a viscous thin film layer coated with a functional material on the surface thereof is removed using a water- The present invention relates to a peeling device for regenerating and separating only a thin film.

PET (polyethylene terephthalate) is widely used in all industrial fields such as industrial, packaging materials, solar cell materials, and optical display, and is a typical recycled material.

PET materials are generally processed in the form of beverage bottles, or in the form of films, which are easy to separate and collect in the form of beverage bottles and thus have high recycling rates. However, in the case of the film type, most impurities are contained. Therefore, it is not easy to separate and collect the waste, so it is generally not recycled as PET, and it is generally recycled only as fuel for incineration for power plant boiler operation.

The reason for the low recycling rate of PET film is that in order to reinforce various functionalities such as ordinary strength reinforcement, ultraviolet ray shielding, anti-static or other necessary in the production of PET film, it is necessary to use silicone, urethane, PC (polycarbonate) This is because the functional materials such as viscous materials such as ceramic powder, mold, UV resin (ultraviolet resin) and the like are coated by thin film or bonded in film form.

However, if waste PET film can be separated and recycled, it is desirable to separate it from economic aspect or resource recycling because it is a material that can increase the value by more than 10 times as compared with the case where it is treated for incineration fuel.

In order to recycle pure PET material only for this purpose, a technology capable of separating a functional material from a waste PET film is required. Examples of technologies that can be proposed include a method of separating and refining PET and a functional material by respective components, There may be a method of directly removing the metal film.

However, the method of separating the PET and the functional material in the molten state consumes a lot of energy when melting, and the complicated process of separating the material in the molten state is also required.

Also, the method of directly removing the thin film layer formed on the PET film has not been disclosed yet.

Because of this practical problem, most of the waste PET film, which has yet to be found to be defective, is used only as a raw material for incineration.

On the other hand, there is a technique for removing a coating film having a predetermined thickness on a resin film or paper when a coating layer is physically removed by a similar technique. One is a method of pulling apart two physical materials and physically separating them, Thereby removing the coated paper.

The first method differs from the present invention in that it removes a separable film layer rather than a thin film layer, which is a difficult technique to apply to a thin film layer.

In addition, the method using a polishing roller on which a polishing cloth is wound is disadvantageous in that it is difficult to precisely polish a waste PET film formed with a thin film having a thickness of about 100 탆, and therefore it is easy to polish the PET material.

Even if it can be polished precisely, the soft surface of the PET material can be roughly polished due to the surface roughness and rigidity of the polishing cloth wound on the polishing roller due to its structural characteristics. In this case, the polished powder is re- There is a structural disadvantage that the regeneration quality of the PET may be deteriorated.

In addition, there is a disadvantage in that a process for removing the abrasive powder or a process for replacing the abrasive powder is required because there is a structural problem such as abruptly lowering the abrasive force when fine abrasive powder is caught in the abrasive cloth wound on the abrasive roller during polishing.

 In addition, if the hard polishing is performed, the PET film may be damaged due to the rotational force. Therefore, polishing at a low speed takes a long time, which is not practical.

In addition, there is a risk of environmental pollution that fine particles blown during polishing usually cause respiratory system diseases of the worker, and scattered fine particles may pollute the surrounding water discharge pipe 6.

Therefore, the conventional physical peeling technique using the polishing roller on which the polishing cloth is wound has various technical problems in peeling and separating the thin film layer formed on one side of the waste PET film.

In addition, when the conventional thinning technique is applied to a technique for removing a thin film layer of a waste PET film coated with a viscous material such as a ceramic powder, a mold or an UV resin (Ultraviolet resin), the viscous material is well removed from the waste film However, this technique has not been disclosed.

As described above, it is understood that the technology for reliably and economically removing the functional material constituting the thin film layer formed on the surface of the waste PET film has not been disclosed yet, so that there is a growing demand for a technique for solving the problem In fact.

Registered Patent Registration No. 10-1408442 (2014.06.10) Korean Patent Registration No. 10-1041701 (June 10, 2011) Domestic public utility model publication No. 20-2008-0004301 (2008.10.02.)

SUMMARY OF THE INVENTION [0006] In order to solve the above problems, an object of the present invention is to provide a method for reusing a waste PET film, which has been determined to be defective in the manufacturing process, by winding a thin film layer made of a viscous functional material coated on the surface of the waste PET film Wherein the thin film remnants and the water are collected through a variable water collection receptacle.

Another object of the present invention is to remove the peeling apparatus which removes the thin film remnants and water which have not been treated by the blade to which the water is discharged, through the foreign substance removing means.

Another object of the present invention is to provide a method of manufacturing a PET film, which is capable of preventing a decrease in the peeling force due to the lowering of the tensile strength of the PET film when the thin film layer of the waste PET film is removed by using a blade discharging water, And the like.

According to an aspect of the present invention, there is provided a method of manufacturing an inkjet recording apparatus, the method comprising the steps of: rotating a waste PET film around a roll shaft;

A drive pulley which is installed at the other end and is axially engaged with a take-up roll shaft to which the other end of the waste PET film is connected;

A motor for transmitting a driving force to the driving pulley to rotate a rotating pulley connected to the belt;

First pressure roller means and second pressure roller means for applying a tensile force while supporting the waste PET film;

A blade having a water discharge tube formed therein for removing the thin film layer formed on the surface of the waste PET film being transported by the winding roll shaft and discharging high pressure water to remove the thin film layer residue;

And a variable water collection unit for collecting the water discharged from the water discharge pipe and the removed thin film layer debris while supporting the lower portion of the blade. .

In a preferred embodiment, the first pressure roller is installed on the roll axis side, and the rollers can be raised and lowered from the lower portion of the waste PET film by using a cylinder to prevent sagging of the PET film and apply tension.

In a preferred embodiment, the second pressure roller is installed at a front end of the blade, and is configured to move up and down from the upper portion of the PET film to apply tension to the PET film to prevent sagging.

According to a preferred embodiment of the present invention, the variable collection and collection unit includes a water collecting pedestal for collecting and discharging water and removed thin film layer debris through water drains formed at both side ends thereof while supporting the lower portion of the blade, A variable water level wall which is installed at an upper portion of the water collection stand so as to be height-adjustable in the width direction to block water and the removed thin film layer debris from flowing along the waste PET film; And a lifting cylinder for adjusting the depth of the waste PET film thin layer to be removed by adjusting the height of the water collecting pedestal.

In a preferred embodiment, the water discharge tube formed inside the blade is configured such that a plurality of discharge tube tubes are arranged in the blade width direction, and a plurality of discharge tube tubes are connected to one discharge header to receive high pressure water.

According to a preferred embodiment of the present invention, the blade may further comprise a foreign material removing means including a rubber for removing the untreated thin film residue and a supporting pedestal for supporting the lower portion.

In a preferred embodiment, the thin film layer may be formed by coating with at least one selected from silicon, urethane, PC (polycarbonate), and acrylic.

The present invention having such characteristics as described above is characterized in that a waste PET film, which is a recycled resource of a high value determined as a failure, is wound in a state in which tensile force is applied and a viscous functional material A thin film layer made of a metal oxide can be removed quickly and cleanly,

In addition, the thin film residue and water generated during the removal of the thin film layer are removed through the variable collection receptacle to prevent re-adsorption to the PET film, and at the same time, the PET film is prevented from sagging due to the load of the injected water, It is advantageous in that there is no need to separate the PET film from the re-adsorbed PET film,

In addition, when the thin film residue is removed, the untreated thin film residue and water are removed again through the foreign material removing means,

A peeling device configured to vary the rotational force of the driving roller for winding and the vertical position of the feeding roller so as to prevent the peeling force due to the lowering of the tensile strength of the PET film from being lowered when the thin film layer of the waste PET film is removed by using a blade, Which is a useful invention having an advantage that a stable peeling can be removed.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing a peeling apparatus according to an embodiment of the present invention,
2 is a plan view of a peeling apparatus according to an embodiment of the present invention,
3 is a perspective view showing a thin film layer removing blade according to an embodiment of the present invention,
4 is a plan view illustrating a thin film layer removing blade according to an embodiment of the present invention,
FIG. 5 is an enlarged detail view of part A of FIG. 1 showing the peeling action of a PET film according to an embodiment of the present invention,
FIG. 6 is a perspective view showing a variable water collection unit according to an embodiment of the present invention,
FIG. 7 is an enlarged detail view of part B of FIG. 1 showing a foreign substance removing unit according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

FIG. 2 is a plan view of a peeling apparatus according to an embodiment of the present invention. FIG. 3 is a cross-sectional view of a thin film layer according to an embodiment of the present invention. FIG. 4 is a plan view of a blade for removing a thin film layer according to an embodiment of the present invention, and FIG. 5 is a plan view of the blade for removing a thin film layer according to the present invention. FIG. 6 is a perspective view showing a variable water collection unit according to an embodiment of the present invention. FIG.

As shown in the figure, the structure of the present invention is such that a roll shaft 110 of a waste PET film is axially coupled to a rotary pulley 1 at one end of a thin film apparatus body frame 10, The take-up roll shaft 210 is axially coupled to the drive pulley 2 so that the waste PET film wrapped around the roll shaft 110 at one end is pulled by the take-up roll shaft 210, The thin film layer made of the functional material formed on the surface of the waste PET film is mechanically removed.

The thin film layer is a viscous thin film layer formed by coating with at least one of viscous properties selected from a ceramic powder, a mold, and an ultraviolet resin.

In addition, the PET film is a relatively hard film, and the thin film layer coated on the top of the PET film is removed when the blade 7 having the blade shape is contacted with less damage to the PET surface.

The roll shaft 110 and the take-up roll shaft 210 are supported by the bearings 120 and 220 of the rotary pulley 1 and the drive pulley 2 and rotate while reducing frictional force during rotation. The drive pulley 2 that rotates the take-up roll shaft 210 is driven by the constant speed motor 3 or the inverter motor 3 and transmits a driving force to the rotating pulley 1 by a belt or a V- As shown in Fig.

It is needless to say that the drive pulley 2 and the rotary pulley 1 may be formed of a chain instead of a belt when they are constructed of sprockets.

In addition, the rated speed motor 3 or the inverter motor 3 may include a speed reducer 32 to rotate the power transmission ratio appropriately.

If the inverter motor 3 is used, it is possible to give various rotational speed changes due to changes in output, so that a more elaborate rotational force is provided to the drive pulley 2 when used together with the speed reducer to pull the waste PET film from the take- There is an advantage that the film can be wound while controlling various tensile forces according to the sagging or winding state caused by the winding of the film. If the tension is not smoothly controlled, the blade 7 may not be properly removed or the film may be torn off when the thin film layer is removed. However, even if there is no sensor for measuring the tension, It is preferable because adjustment is possible.

The waste PET film is wound around the roll shaft 110 by being wound around the roll shaft 110 and wound around the take-up roll shaft 210 where the regenerated PET film is wound. At this time, two pressure rollers are installed to prevent sagging by weight, Guide.

That is, the first pressure roller is provided on the roll axis 11 side so as to raise and lower the lower portion of the waste PET film in the upward direction to apply the tension while preventing sagging of the PET film. And is configured to move upward and downward from the upper portion of the PET film to apply tension to the PET film to prevent sagging.

Therefore, by controlling the height of the lifting / lowering between the first pressure roller means 4 and the second pressure roller means 5, the change in the tension that can occur when the roll thickness of the waste PET film and the thickness of the roll of the recycled PET film are adjusted A waste PET film having an appropriate tension is provided to the blade 7 so as to smoothly remove the thin film layer.

The first pressure roller means (4) and the second pressure roller means (5) may suffice as long as the rollers are raised and lowered by various raising and lowering means. Preferably, they may be constituted by air or hydraulic cylinders.

The upward and downward movements of the first pressurizing roller means 4 and the second pressurizing roller means 5 may be constituted by a manual upward / downward movement by naked eye identification, a load sensor for measuring the tension applied to the waste PET film A displacement sensor capable of measuring the roll thickness of the waste PET film and the roll thickness of the regenerated PET film may be provided so that the control unit may detect the information and automatically ascend and descend.

A blade 7 having a water discharge tube according to the present invention is provided at one point past the second pressure roller means 5 and is peeled off while being in contact with the thin film layer formed on the surface of the waste PET film being transported. (7) supports the lower portion so as to receive a force when the thin film layer of the waste PET film is removed, and also allows the depth of the thin layer to be removed by the blade (7) to be adjusted, The flexible water collecting support portion 11 is installed under the blade 7 to support the waste PET film so as to flow along the second pressure roller to prevent the waste PET film from sagging due to the load.

The variable collection and collection unit 11 is installed in a support frame 12 provided with a blade 7. The variable collection and collection unit 11 is structured such that the height of the water collection pedestal 11b is adjusted by the ascending and descending cylinder 11a, Is lowered, and is lowered when the removal of the waste PET film is increased.

More specifically, the water collecting pedestal 11b not only supports the waste PET film to help remove the thin film layer of the blade, but also helps to remove the thin film layer formed on the surface of the waste PET film, Drainage grooves 11c are formed at both ends in the width direction of the collection stand 11b and a variable water distribution wall 11d whose height is changed by the bolt connection with the side of the water collection stand is provided in the width direction of the waste PET film The water jetted from the blade along the upper surface of the waste PET film is blocked from flowing toward the second pressure roller means. Water whose flow is blocked by the variable water level walls flows into the water drain grooves 11c formed at the both end sides and then discharged to the water water rejection lie. The water discharged to water rejection is configured to be discharged through a drain pipe (11f) formed at the lower part of the water rejection.

The variable water level wall 11d adjusts the degree of blockage of water by varying the height of the water level. In this case, it is sufficient to adjust the height of the water level to the extent that it does not disturb the waste PET film being transported.

On the other hand, the blade 7 is a blade having a wider width than the width direction of the waste PET film. The blade 7 is not simply composed of a blade, but has a water discharge tube 6 therein, and is made of a viscous material The thin-film layer is configured to sweep with the water.

The water discharge tube 6 has a plurality of discharge tube tubes 61 arranged in the width direction of the blade 7 and the plurality of discharge tube tubes 61 are connected to one discharge header 62, (7) so as to discharge high-pressure water supplied from an external pump.

The reason why the water discharge tube 6 is required for the blade 7 is that when the thin film layer is removed from the PET film which is a polymer synthetic resin material, the viscous thin film layer material does not remain on the surface of the PET film, If left untreated, the thin film layer residue on the surface melts together with the regenerated PET film, which is a necessary constitution because the purity of the PET film is lowered and the meaning of recycling is lost. That is, the PET film which has been melted after the removal of the thin film layer to reproduce it is required to maintain a purity of at least 90% or more, which is valuable as a PET film.

The water discharge pipe 6 formed in the blade 7 of the present invention is advantageous in that the discharge direction of the water discharge pipe 6 is preferably balanced with the installation direction of the blade 7, It is possible to remove debris.

FIG. 7 is an enlarged detail view of a portion B of FIG. 1 showing a foreign substance removing means according to an embodiment of the present invention. As shown in FIG. 7, the functional material formed on the thin film layer is removed And a foreign matter removing means (14) for finally removing the thin film residue and water which are finally deposited on the surface of the regenerated PET film before winding the regenerated PET film.

By providing the foreign material removing means 14 in this way, the thin film layer residue is removed by the water discharge tube 6 of the blade 7, but the residue that can not be removed is prevented from being wrapped around the surface of the recycled PET film, .

As shown in the figure, the foreign substance removing unit 14 according to an embodiment includes at least a rubber 141 formed to have a wide width in the width direction of the PET film, which is fixed to the frame 142 and contacts the surface of the PET film This will eventually remove the deposited film residue and water. The height of the rubber can be adjusted by adjusting the position by forming a plurality of holes or slots in the rubber or frame as needed.

Meanwhile, in order to smoothly remove the debris from the rubber, a support pedestal 143 is provided on the lower portion of the rubber film, that is, the lower part of the PET film being transported, to provide a supporting force to the rubber to remove foreign matter.

Hereinafter, the operation of the present invention will be described.

A PET film produced by coating a thin film of a functional material in a PET film production plant was installed on the side of the main frame at the side of the roll frame 110 of the waste PET film collected as a defective product due to quality or various factors, One end of the film is pulled to contact the upper portion of the first pressurizing roller means (4) and the lower portion of the second pressurizing roller means, and then connected to a take-up roll shaft for winding up the regenerated PET film.

Thereafter, the variable collecting receptacle located at the lower portion of the blade 7 is raised to set the thickness of the thin film layer to be removed by the blade 7, and then the motor 3 for rotating the take-up roll shaft is operated. When the driving pulley 2 and the rotating pulley 1 connected to the belt are rotated by the motor 3, the roll shaft 110 and the winding roll shaft of the waste PET film are rotated.

When the drive pulley 2 rotates in this way, the waste PET film connected to the take-up roll shaft 210 is pulled with a tensile force, and the waste PET film having the thin film layer passes through the lower portion of the blade 7, The thin film layer coated on the surface is peeled off and a recycled PET film is produced.

Pressure water discharged through the water discharge pipe 6 formed in the blade 7 is washed and removed, and the removed point property residue is removed due to the variable water wall 11d of the variable water collection counter portion 2 pressure roller means and is introduced into the water rejection through drainage grooves formed on the side, and then discharged downward along the drainage pipe to the water storage tank.

Thereafter, debris and water remaining on the surface of the recycled PET film are removed again by the foreign material removing means.

When the thin film layer continuously formed on the surface of the waste PET film is removed in this manner and the recycled PET film is wound on the take-up roller, the thickness of the waste PET film roll and the thickness of the recycled PET film wound around the take- The thinning layer may not smoothly be removed by the blade 7. If such a situation occurs, the first pressure roller means 4 is raised or the second pressure roller means 5 is lowered, .

In addition, the number of revolutions of the inverter motor 3 may be varied to adjust a predetermined tension.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims and their equivalents. Of course, such modifications are within the scope of the claims.

(1): rotating pulley (2): driving pulley
(3): motor (4): first pressure roller means
(5): second pressure roller means (6): water discharge pipe
(7): blade (10): main frame
(11): variable collection collection unit (11a): ascending and descending cylinder
(11b): the water collecting pedestal (11c): the drainage groove
(11d): variable water level wall (11e): water water rejection
(11f): Drain pipe (12): Support frame
(14): Foreign matter removing means (61): Discharge branch pipe
(62): Discharge header (110): Roll shaft
(120, 220): Bearing (141): Rubber
(142): frame (143): support pedestal
(210): winding roll axis

Claims (7)

A rotary pulley installed at one end of the body frame and axially coupled to a roll shaft around which the waste PET film is wound;
A drive pulley which is installed at the other end and is axially engaged with a take-up roll shaft to which the other end of the waste PET film is connected;
A motor for transmitting a driving force to the driving pulley to rotate a rotating pulley connected to the belt;
First pressure roller means and second pressure roller means for applying a tensile force while supporting the waste PET film;
A blade having a water discharge tube formed therein for removing the thin film layer formed on the surface of the waste PET film being transported by the winding roll shaft and discharging high pressure water to remove the thin film layer residue;
And a flexible water collection container for supporting the lower portion of the blade while collecting the water discharged from the water discharge pipe and the removed thin film layer debris.
The method according to claim 1,
Wherein the first pressure roller is disposed on a roll axis side to vertically move the roller upward from a lower portion of the waste PET film by using a cylinder to prevent sagging of the PET film and apply a tensile force thereto. A peeling device for regenerating a film.
The method according to claim 1,
Wherein the second pressurizing roller is installed at a front end of the blade to move up and down from the upper portion of the PET film to apply tension to the PET film to prevent sagging. Device.
The method according to claim 1,
The variable collection /
A water collecting pedestal for collecting and discharging the water and the removed thin film layer debris through the drainage grooves formed at both ends of the blade while supporting the lower part of the blade,
A variable water level wall which is installed at an upper portion of the water collection stand so as to be height-adjustable in the width direction to block water and the removed thin film layer debris from flowing along the waste PET film;
And a lifting cylinder for adjusting the depth of the waste PET film thin layer to be removed by adjusting the height of the water collecting pedestal.
The method according to claim 1,
Wherein a plurality of discharge tube tubes are arranged in the blade width direction and a plurality of discharge tube tubes are connected to one discharge header to receive high pressure water. Peeling device for regenerating PET film.
The method according to claim 1,
And a foreign matter removing means comprising a rubber for re-removing the untreated thin film residue and a supporting pedestal for supporting the lower portion at the rear end of the blade.
The method according to claim 1,
Wherein the thin film layer is formed by coating at least one selected from the group consisting of a ceramic powder, a mold, and an ultraviolet resin.

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