KR20170111026A - Spray type nano fiber manufacturing apparatus using high pressure air - Google Patents

Abstract

The present invention relates to an apparatus for manufacturing injectable nanofibers using high-pressure air, and an apparatus for manufacturing injectable nanofibers using high-pressure air according to the present invention includes a high-pressure injector including a nozzle through which nanofibers are injected, And a moving unit including a collecting unit for collecting the nanofibers and a spraying distance adjusting member which is installed in the high pressure spraying unit and moves in a first direction in which the collecting unit moves away from or closer to the collecting unit to control the spraying distance.

Description

TECHNICAL FIELD [0001] The present invention relates to a spray type nanofiber manufacturing apparatus using high-pressure air,

The present invention relates to an apparatus for manufacturing injectable nanofibers using high-pressure air.

As a method of manufacturing nanofibers, drawing, template synthesis, phase separation, self-assembly, and electrospinning are known. Among these nanofiber manufacturing methods, electrospinning can be applied as a method of continuously producing nanofibers.

This method of manufacturing nanofibers through electrospinning applies a high voltage between the nozzle emitting the solution and the collector on which the substrate is placed to form an electric field larger than the solution's surface tension so that the solution is radiated in nanofiber form. Here, nanofibers produced by electrospinning are influenced by the physical properties of the solution such as viscosity, elasticity, conductivity, dielectric property, polarity and surface tension, the strength of the electric field, and the distance between the nozzle and the collector.

However, such a method of manufacturing nanofibers through electrospinning involves a risk of explosion due to poor grounding due to the use of high voltage electricity. Furthermore, the electrospinning method using a solution charged by a high voltage has a problem that the conditions for producing nanofibers are complicated and productivity is low.

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an aspect of the present invention is to provide a nanofiber manufacturing apparatus for producing nanofibers by injecting high-pressure air.

The apparatus for manufacturing nanofibers using high-pressure air according to an embodiment of the present invention includes a high-pressure spraying unit including a nozzle through which nanofibers are sprayed, a collecting unit for collecting nanofibers separated from the nozzle by a spray distance, and a high-pressure spraying unit And a shifting portion including a slip distance adjusting member which is moved in a first direction which is separated from or closer to the collecting portion to adjust the spraying distance.

In addition, the moving part may further include a moving member to which the distance adjusting member is coupled.

The moving member includes a first moving member that moves in a direction perpendicular to the first direction, which is the moving direction of the jetting distance adjustment member, and a second moving member that is coupled to the jetting distance adjustment member, And a second moving member moving in a direction perpendicular to each of the first and second directions.

The control unit may further include a controller for moving at least one of the first moving member and the second moving member to control a moving path of the high-pressure jetting unit.

Further, the movement path of the high-pressure ejection portion may include a curved path formed when the first moving member and the second moving member simultaneously move.

Further, the ejection distance may be adjusted to 20 cm to 60 cm.

The nozzle includes a first nozzle passage through which the first high-pressure air is supplied and from which the nanofibers are injected, and a second nozzle passage surrounding the first nozzle passage to which the second high-pressure air is supplied, At least a portion of the high pressure air may collide with at least a portion of the first high pressure air that has passed through the first nozzle passage.

In addition, it may further include suction means provided so as to face the high-pressure spraying portion with the collecting portion therebetween.

According to an aspect of the present invention, nanofibers can be manufactured by spraying a solution using high-pressure air to ensure stability and productivity.

In addition, the spraying angle of the nanofibers can be controlled through the pressure supplied to the nozzle, and various types of nanofibers desired by the user can be manufactured.

1 is a perspective view of an apparatus for manufacturing injectable nanofibers using high-pressure air according to a first embodiment of the present invention.
FIG. 2 is a perspective view showing an operation state of the spray type nanofiber manufacturing apparatus using the high-pressure air of FIG. 1;
FIG. 3 is a view showing a first movement path of the spray type nanofiber manufacturing apparatus using the high-pressure air of FIG. 2;
4 is a perspective view of an apparatus for manufacturing injectable nanofibers according to a second embodiment of the present invention.
5 is a sectional view showing a first injection state of a nozzle of the spray type nanofiber manufacturing apparatus of FIG.
FIG. 6 is a cross-sectional view showing a second injection state of the nozzle for the spray-type nanofiber manufacturing apparatus of FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and the same or similar components are denoted by the same reference numerals throughout the specification.

FIG. 1 is a perspective view of an apparatus for manufacturing a spray type nanofiber using high-pressure air according to a first embodiment of the present invention, FIG. 2 is a perspective view showing an operation state of a spray type nanofiber apparatus using the high- 2 is a view showing a first movement path of the spray type nanofiber manufacturing apparatus using the high-pressure air of FIG. 2. FIG.

1 to 3, an apparatus 100 for manufacturing injectable nanofibers using high-pressure air according to the present embodiment includes a high-pressure spraying unit 10 including a nozzle 11 through which nanofibers are injected, A collecting part 20 for separating the nanofibers from the yarn 10 and a moving part 30 for mounting the high pressure spray part 10.

The high-pressure spray portion 10 may further include a supply stopper 12 coupled to the nozzle 11. [ The air supply line 1 and the solution supply line 2 are installed through the supply stopper 12 and the high pressure air and the solution are supplied through the air supply line 1 and the solution supply line 2 to the nozzle 11 Can be supplied.

Accordingly, the solution sprayed from the nozzle 11 can be collected in the collection part 20 in the form of nanofibers through a fine-diameter injection hole at a pressure of high pressure air of 100 to 600 psi.

The collecting portion 20 may include a planar collecting surface 20a from which the nanofibers are collected.

Here, the collecting surface 20a is provided in a cylindrical shape that is rotatable in addition to the collecting surface 20a in the plane, and the nanofibers can be collected on the outer surface of the cylinder. The collecting unit 20 collects all the particles used in the technical field of the present invention Shaped collection surface 20a.

Further, the collecting section 20 may further include a collecting frame 20b surrounding the collecting surface 20a. At this time, the collecting frame 20b may be provided in a rectangular shape and installed in a housing or a body frame. This is merely an example of the present invention shown in the drawings, and the present invention is not limited thereto and various modifications may be made.

The moving part 30 is provided with a high pressure spray part 10 and a spray distance adjusting member 31 which is moved in a first direction d1 in which the high speed spray part 10 is moved away from or closer to the collecting part 20, ).

Here, the moving part 30 may be supported on a housing or a body frame, and may be moved including a power transmission device such as a motor.

The jetting distance adjustment member 31 may include fixing means 31a to which the high-pressure jetting section 10 is fixed. At this time, the fixing means 31a should be able to firmly support the high-pressure spray portion 10 in the course of spraying the nanofibers by the high-pressure air. The fixing means 31a may be a fixing means for fixing the nozzles generally used in the technical field of the present invention.

Further, the jetting distance adjustment member 31 may further include support means 31b for supporting the moving means 30 with the fixing means 31a.

Here, the supporting means 31b may be a structure which is moved through a user's operation. As a result, the high-pressure spraying portion 10 provided on the fixing means 31a moves away from or closer to the collecting portion 20 in the first direction d1, so that the straight line between the nozzle 11 and the collecting portion 20 The distance (hereinafter referred to as " separation distance (a) ") may be adjusted to be between 20 cm and 60 cm.

Accordingly, the jetting distance adjusting member 31 can be operated to adjust the jetting distance a according to the kind of the solution, the dissolution state of the solution, and the jetting pressure of the high-pressure jetting unit 10.

According to the present embodiment, the solution refers to a raw material in which the polymer is dissolved by a solubilizing agent such as a solvent, and the solution sprayed at a high pressure in the nozzle 11 is a fine fiber strand in the nanometer scale, (20). ≪ / RTI >

The nanofibers injected into the collecting part 20 are supplied to the collecting part 20 at a distance of not less than the distance between the nozzle 11 and the collecting part 20 in the solution sprayed from the nozzle 11 at a high pressure of 100-600 kPa The polymer can be decomposed into nano-sized fibers by high-pressure air while being evaporated during the air-blowing time of the polymer.

According to this embodiment, the jet range adjusting member 31 can be moved so that the nozzle 11 and the collecting unit 20 can be separated from each other by the jet range a.

Here, the separation distance (a) may be defined as a straight line distance from the injection port of the nozzle 11 through which the nanofibers are injected to the collection surface 20a where the nanofibers injected from the injection port are collected. The separation distance a can be adjusted by moving the support means 31b of the separation distance adjustment member 31 up and down.

According to the present embodiment, the size of the nanofibers injected into the collecting unit 20, whether they are formed or the quality of the nanofibers can be determined according to the separation distance a.

That is, according to this embodiment, uniform quality nanofibers can be produced when the spray distance (a) is 20 cm to 60 cm, but when the spray distance (a) is less than 20 cm or exceeds 60 cm No nanofibers are formed or uniform quality nanofibers can not be made.

In particular, according to the present embodiment, the size of the nanofibers can be reduced since the residence time in the polymer nozzle and the collecting part becomes longer as the separation distance (a) increases between 20 cm and 60 cm. Also, the smaller the separation distance (a) is between 20 cm and 60 cm, the shorter the residence time between the polymer nozzle and the collecting part, and thus the size of the nanofibers can be increased. Here, when the separation distance (a) is between 20 cm and 60 cm, the size of the nanofiber varies according to the separation distance (a), but the size of the nanofiber at the same separation distance (a) can be uniform. Therefore, according to the present embodiment, it is possible to manufacture the nanofibers of uniform quality by controlling the jet range (a) to be between 20 cm and 60 cm.

However, when the separation distance (a) is less than 20 cm, the residence time between the nozzle and the collecting part is shortened, so that the dissolution material contained in the solution may not completely evaporate. Therefore, nanofibers that have already been produced by the residual solubilizer are dissolved, so that nanofibers may not be formed.

On the other hand, if the separation distance (a) is more than 60 cm, the residence time between the nozzle and the collecting part becomes long, so that the nanofibers already formed are agglomerated to make uniform quality nanofibers.

As a result, according to the present embodiment, it is possible to produce nanofibers of uniform quality by adjusting the distance of separation (a), which is a linear distance between the nozzle 11 and the collecting unit 20, to between 20 cm and 60 cm.

The moving part 30 may further include a moving member 32 to which the jet range adjusting member 31 is coupled.

The moving member 32 includes a first moving member 32a that moves in a direction perpendicular to the first direction y that is the moving direction of the jetting distance adjustment member 31, And a second moving member 32b that moves in a direction perpendicular to the moving direction of the slip angle regulating member 31 and the moving direction of the first moving member 32a.

Here, the moving direction of the first moving member 32a may be defined as the second direction z, and the moving direction of the second moving member 32b may be defined as the third direction x.

The first moving member 32a may include a first motor 32a1, a first rail 32a2, and a first moving block 32a3.

Here, the first motor 32a1 may be installed in the body frame 5. [ For example, the first motor 32a1 may be fixed to the body frame 5 with a bracket. Also, the first motor 32a1 may be a motor capable of rotating forward and backward and having its rotational speed regulated.

Also, the first rail 32a2 may be installed in the body frame 5. [ Here, the first rail 32a2 may be installed in the body frame 5 in the longitudinal direction in the same manner as the second direction d2.

The length of the first rail 32a2 may be such that the first moving block 32a3 can be moved from one end of the collecting surface 20a to the other end located on the other side of the collecting surface 20a.

For example, if the collecting surface 20a is rectangular and the second direction z coincides with the lateral direction of the collecting surface 20a, then the first rail 32a2 is longer than the transverse length of the collecting surface 20a, And may be installed in the frame 5.

Also, the first moving block 32a3 may be coupled to the first rail 32a2.

The first moving block 32a3 is slidably coupled to the first rail 32a2 and may be connected to the driving shaft of the first motor 32a1.

Accordingly, the first moving block 32a3 can be moved in the second direction z by driving the first motor 32a1.

Here, the first motor 32a1 and the first moving block 32a3 may be connected to each other by a belt, a pulley, or a chain and a sprocket.

The second moving member 32b may include a second motor 32b1, a second rail 32b2, a second moving block 32b3, and a fixed block 32b4.

The fixed block 32b4 may be fixed to the first moving block 32a3 and moved in the second direction z according to the driving of the first moving member 32a.

For example, both ends of the fixed block 32b4 may be fixed to a plurality of first movable blocks 32a3.

Further, the second motor 32b1 may be installed in the fixed block 32b4. Here, the second motor 32b1 may be mounted on the fixed block 32b4 with a bracket. Also, the second motor 32b1 may be a motor capable of rotating forward and reverse and having its rotational speed regulated.

Further, the second rail 32b2 may be installed in the fixed block 32b4. The second rail 32b2 may be installed in the body frame 5 in the longitudinal direction in the same manner as the third direction x.

The length of the second rail 32b2 may be such that the second moving block 32a3 can be moved from one end of the collecting surface 20a to the other end located on the other side of the collecting surface 20a.

For example, if the collecting surface 20a is rectangular and the third direction x coincides with the longitudinal direction of the collecting surface 20a, then the second rails 32b2 may have a length longer than the longitudinal length of the collecting surface 20a, And may be installed in the frame 5.

Also, the second moving block 32b3 may be coupled to the second rail 32b2. The second moving block 32b3 may be slidably coupled to the second rail 32b2 and connected to the driving shaft of the second motor 32b1.

Accordingly, the second moving block 32b3 can be moved in the third direction x by driving the second motor 32b1.

Here, the second motor 32b1 and the second moving block 32b3 may be connected to each other by a belt, a pulley, or a chain and a sprocket.

Further, the second moving block 32b3 may be provided with a jet range adjusting member 31. [ The high pressure spray portion 10 is moved in the second direction z and the third direction x through the first moving member 32a and the second moving member 32b so that the front surface of the collecting surface 20a Lt; RTI ID = 0.0 > nanofibers < / RTI >

The control unit may further include a control unit for moving at least one of the first moving member 32a and the second moving member 32b to control the moving path of the high-pressure jetting unit 10. [

The control unit can drive the first moving member 32a and the second moving member 32b by controlling the forward and reverse rotations and rotational speeds of the first motor 32a1 and the second motor 32b1.

The first movable block 32a3 and the fixed block 32b4 fixed to the first movable block 32a3 are moved in the second direction z ). ≪ / RTI >

Also, when the second motor 32b1 rotates in the forward and reverse directions under the control of the control unit, the second moving block 32b3 can be moved in the third direction x.

Accordingly, nanofibers of various patterns can be manufactured by controlling the movement path of the high-pressure spraying unit 10. [

Therefore, according to the present embodiment, since the nanofiber having a desired size or shape can be easily manufactured by the user, the productivity can be improved.

Also, according to the present embodiment, the moving part 30 can be moved from 0.025 to 0.5 mm. According to the present embodiment, since the moving speed of the moving unit 30 is faster than the moving speed of the nozzle of the known spinning apparatus (0.025 to 0.06 mm), the nanofiber can be manufactured at a higher speed than the conventional spinning apparatus.

In addition, the movement path of the high-pressure spray portion 10 may include a curved path formed when the first moving member 32a and the second moving member 32b simultaneously move.

For example, the first movement path C1 of the nozzle 11 may be composed of a first straight line section H, a second straight line section V and a curved section R.

Here, the first straight line section H is a path in which the first moving member 32a is driven and the nozzle 11 is moved in the second direction z, and the second straight line section V is a path that the second moving member 32b may be driven so that the nozzle 11 is moved in the third direction x. At this time, the first straight line section H may correspond to the second direction z and the second straight line section V may correspond to the third direction x.

And a curved section R may be included between the first straight line section H and the second straight line section V. [ Here, as shown in FIG. 3, the curved section R may be a path where the first moving member 32a and the second moving member 32b are simultaneously driven and moved to a curved line.

In detail, the control unit can control the first motor 32a1 and the second motor 32b1, and can set the minimum control value to 0 and the maximum control value to 100. [ The minimum control value 0 indicates the stop of the first motor 32a1 and the second motor 32b1, and the maximum control value 100 may indicate the set moving speed of the nozzle 11. [ When the control unit controls the first motor 32a1 and the second motor 32b1 with the control value between the control value 0 and the control value 100, the moving speed of the nozzle 11 can be slowed down or accelerated.

For example, when the control unit controls the control value of the first motor 32a1 to be 100 and the control value of the second motor 32b1 to be 0, the nozzle 11 moves the first straight line section H to the set moving speed . When the control unit controls the control value of the first motor 32a1 to 0 and the control value of the second motor 32b1 to 100, the nozzle 11 can move the second straight line section V to the set moving speed have.

Here, in order to switch the path of the nozzle 11 from the first straight line section H to the second straight line section V, the control section gradually lowers the control value of the first motor 32a1 from 100 to 0, 32b1 can be gradually increased from 0 to 100. [0064] However, if the first motor 32a1 and the second motor 32b1 are controlled in this manner, the nozzle 11 can be moved to a rectangular path through P4 in Fig. As a result, the nanofibers are aggregated in P4, so that it is impossible to produce nanofibers of uniform quality.

On the other hand, according to the present embodiment, the controller can simultaneously control the first motor 32a1 and the second motor 32b1 to move the nozzle 11 to the curved section R.

For example, the control unit may control the control value of the first motor 32a1 to the control value of 0 and the control value of the second motor 32b1 so that the nozzle 11 passes through the first straight line section H, It is possible to reach the starting point P1. The control unit gradually controls the control value of the first motor 32a1 from 100 to 50 and gradually controls the control value of the second motor 32b1 from 0 to 50 so that the nozzle 11 moves from P1 to the curved section R To P2, which is an intermediate point of the < / RTI > The control unit gradually controls the control value of the first motor 32a1 from 50 to 0 and controls the control value of the second motor 32b1 gradually from 50 to 100 so that the nozzle 11 is moved from P2 to P3 .

Accordingly, the nozzle 11 can be moved to a curved path, and can be switched from the first straight line section H to the second straight line section V. [

Accordingly, when the nozzle 11 is switched from the first straight line section H to the second straight line section V, the nanofibers are not concentrated to the specific position P4 as they are switched through the curve section R And can be uniformly sprayed along the curved paths P1 to P3.

The apparatus 100 for manufacturing injectable nanofibers using high-pressure air according to the first embodiment of the present invention further includes a suction unit 50 installed so as to face the high-pressure spray unit 10 with the collecting unit 20 interposed therebetween can do.

The collecting unit 20 may further include a plurality of ventilation holes 21 formed in the collecting surface 20a. The nanofibers injected from the nozzle 11 through the plurality of vent holes 21 can be sucked toward the collecting surface 20a.

Accordingly, the nanofibers injected from the high-pressure spraying unit 10 can be collected by the collecting unit 20 by the suction force of the suction unit 50, and it is possible to manufacture a uniform and continuous pattern of nanofibers.

As a result, according to the spray-type nanofiber manufacturing apparatus 100 according to the present embodiment, nanofiber can be manufactured by spraying a solution using high-pressure air, and stability and productivity can be secured.

4 is a perspective view of an apparatus for manufacturing injectable nanofibers according to a second embodiment of the present invention. 5 is a cross-sectional view showing a first spray state of the nozzle of the spray type nanofiber manufacturing apparatus according to the second embodiment of the present invention, FIG. 6 is a view showing a second spray state of the nozzle of the spray type nanofiber manufacturing apparatus of FIG. Sectional view.

4 and 5, the apparatus for manufacturing spray-type nanofibers according to the present embodiment is the same as the apparatus for manufacturing spray-type nanofibers 100 according to the first embodiment of the present invention except for the nozzle 211 ≪ / RTI >

Therefore, the detailed description of the same configuration as the spray type nanofiber manufacturing apparatus 100 will be omitted.

According to the present embodiment, the spraying range of the solution sprayed from the nozzle 211 can be adjusted by controlling the pressure of the high-pressure air supplied to the nozzle 211. Accordingly, the range of the nanofibers collected in the collecting unit 20 can be varied.

The nozzles 211 of the apparatus 100 for manufacturing injectable nanofibers using high-pressure air according to the present embodiment are provided with a first nozzle passage 211a through which the first high-pressure air A1 is supplied and the nanofibers are injected, And a second nozzle passage 211b surrounding the passage 211a to which the second high-pressure air A2 is supplied. At least a part of the second high-pressure air (A2) passing through the second nozzle passage (211b) may collide with at least a part of the first high-pressure air (A1) passing through the first nozzle passage (211a).

The first nozzle passage 211a may be connected to the high-pressure air supply line 1 and the solution supply line 2. Accordingly, the first nozzle passage 211a can be supplied with the first high-pressure air (A1) and the solution through the high-pressure air supply line 1 and the solution supply line 2.

Then, the supplied first high-pressure air (A1) and the solution are injected to the outside through the first nozzle passage 211a to collect the nanofibers on the collecting surface 20a.

Here, the nanofibers injected from the first nozzle passage 211a may be injected at the first spray angle? 1.

In addition, the second nozzle passage 211b may be formed so as to surround the first nozzle passage 211a. And the second nozzle passage 211b may be connected to the high-pressure air supply line 1. [

Accordingly, the second high-pressure air (A2) can be supplied to the second nozzle passage 211b through the high-pressure air supply line 2. [

The supplied second high-pressure air (A2) can be injected to the outside through the second nozzle passage 211b.

Here, the second high-pressure air A2 injected from the second nozzle passage 211b may collide with the first high-pressure air A1 injected from the first nozzle passage 211a.

As the injection direction of the first high-pressure air A1 is changed, the first spray angle? 1 can be changed. At this time, when the second high-pressure air (A2) is injected at the set maximum pressure value, the spray angle of the first high-pressure air (A1) collided with the second high-pressure air may be the second spray angle (2).

Accordingly, the spray angle of the nanofibers injected from the first nozzle passage 11a can be adjusted from the first spray angle? 1 to the second spray angle? 2 according to the pressure value of the second high-pressure air A2 .

Accordingly, the coating range and pattern of the nanofibers can be determined according to the manipulation of the user, and the density of the nanofibers to be laminated in a single area can be controlled.

As a result, according to the spray type nanofiber manufacturing apparatus of the present embodiment, the spray angle of the nanofibers can be controlled through the pressure supplied to the nozzles, and various types of nanofibers desired by the user can be manufactured.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, And it goes without saying that the invention belongs to the scope of the invention.

100: a spray type nanofiber manufacturing apparatus 10:
11, 211: nozzle 211a: first nozzle passage
211b: second nozzle passage 12: supply stopper
20: collecting portion 20a: collecting surface
20b: collecting frame 21: plural vents
30: moving part 31: minute distance adjusting member
32: moving member 32a: first moving member
32a1: first motor 32a2: first rail
32a3: first moving block 32b: second moving member
32b1: second motor 32b2: second rail
32b3: second moving block 32b4: fixed block
40: Suction means

Claims (8)

A high pressure jetting section including a nozzle through which nanofibers are injected;
A collector for collecting the nanofibers separated from the nozzle by a separation distance; And
A moving part including a high-pressure spraying part and a spraying distance adjusting member which is moved in a first direction that is distant from or close to the collecting part to adjust the spraying distance; Wherein the high-pressure air is used to produce a spray type nanofiber. The method according to claim 1,
The moving unit includes:
Further comprising a moving member to which the jetting distance adjusting member is coupled. 3. The method of claim 2,
The moving member includes:
A first moving member which moves in a direction perpendicular to the first direction, which is a moving direction of the jetting distance adjustment member,
And a second moving member to which the jetting distance adjusting member is coupled and which moves in a direction perpendicular to the moving direction of the jetting adjusting member and the moving direction of the first moving member, respectively. The method of claim 3,
Further comprising a controller for moving at least one of the first moving member and the second moving member to control a moving path of the high-pressure jetting unit. 5. The method of claim 4,
And the curved path formed when the first moving member and the second moving member simultaneously move the moving path of the high-pressure jetting unit. The method according to claim 1,
Wherein the spraying distance is adjusted to 20 cm to 60 cm. The method according to claim 1,
The nozzle
A first nozzle passage through which the first high-pressure air is supplied to inject the nanofibers,
And a second nozzle passage surrounding the first nozzle passage and supplied with the second high-pressure air,
Pressure air in which at least a part of the second high-pressure air that has passed through the second nozzle passage collides with at least a part of the first high-pressure air that has passed through the first nozzle passage. The method according to claim 1,
And a suction unit provided so as to face the high pressure spray part with the collecting part interposed therebetween.

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