KR20150056682A - Apparatus for Manufacturing Antistatic Film of 3 layer - Google Patents

Abstract

Disclosed in the present invention is an apparatus for manufacturing an antistatic film having a three-layer structure, which comprises: a first cylinder unit having a first hopper, a first cylinder and a first screw, having a control temperature set within the range of a temperature set independently as the first cylinder is divided into multiple sections, and providing film materials for an outer layer; a second cylinder unit having a second hopper, a second cylinder, and a second screw, having a control temperature set within the range of a temperature set independently as the second cylinder is divided into multiple sections, and providing film materials for an intermediate layer; a third cylinder unit having a third hopper, a third cylinder and a third screw, having a control temperature set within the range of a temperature set independently as the third cylinder is divided into multiple sections; and a dice having a first path with a first dice nozzle, a second path with a second dice nozzle, and a third path with a third dice nozzle, wherein the first dice nozzle, the second dice nozzle, and the third dice nozzle are controlled within different temperature ranges from one another.

Description

[0001] Apparatus for Manufacturing Antistatic Film of 3 Layer [

The present invention relates to an antistatic film production apparatus having a three-layer structure.

The antistatic film is used in a shield bag for storing or transporting electronic components such as a display module, a backlight unit, and a circuit board, and prevents the electronic components from being damaged by static electricity.

The antistatic film is generally formed in a three-layer structure of at least an inner layer, an intermediate layer and an outer layer, and is manufactured by a co-extrusion method.

The co-extrusion method is widely used for producing a film having at least a three-layer structure. The resin base material forming each layer is jetted at the same time through respective nozzles formed in a nozzle type die to form a film, To form a single multilayer film.

In the case of forming the antistatic film by the co-extrusion method, depending on the conditions of melting the resin base material of different components forming each layer in the cylinder and the condition of spraying from the nozzle of the die, The shrinkage degree of each film, the interlaminar adhesive force, and the degree of deformation of the antistatic film vary. Therefore, it is important to control the temperature distribution inside the cylinder and the temperature distribution of the nozzle of the die, but it is very difficult to catch the control condition.

Korean Patent Publication No. 10-2012-0063934 (Jun. 18, 2012) Korean Patent Publication No. 10-2000-0019951 (Apr. 15, 2000)

An object of the present invention is to provide an antistatic film production apparatus of a three-layer structure capable of producing an antistatic film having a small difference in shrinkage degree of a layered film of an antistatic film having a three- .

According to an aspect of the present invention, there is provided an antistatic film production apparatus including a first hopper, a first cylinder, and a first screw, wherein the first cylinder has a hollow interior, A first hopper hole in which a first screw is inserted and a first cylinder nozzle is coupled to the other end and a first hopper is coupled to the first hopper hole is formed and divided into a plurality of zones and a control temperature is set in an independently set temperature range A first cylinder for feeding the film material of the outer layer, a second hopper, a second cylinder, and a second screw, wherein the second cylinder is hollow and has one end opened to insert the second screw, A second hopper hole is formed on one side of the second hopper and a second hopper hole is formed on a side of the second hopper hole, And a third cylinder, a third cylinder, and a third screw, wherein the third cylinder is hollow inside and one end is opened so that the third cylinder, the second cylinder, A third hopper hole in which a third cylinder nozzle is coupled to the other end and a third hopper is coupled to the other end of the third hopper hole and a control temperature is set in an independently set temperature range, And a first die nozzle formed on the outer circumferential surface and having a first injection port connected to the first cylinder nozzle and a ring shape formed on an upper surface of the cylinder, A first passage for injecting the film material of the outer layer supplied through the first injection port from the first die nozzle, Layer film material supplied from the second cylinder portion through the second injection port to the second die nozzle through the second die nozzle and the second die nozzle, And a third die nozzle formed on an outer circumferential surface and formed in a ring shape on an upper surface and a second injection port formed on an outer circumferential surface to which the third cylinder nozzle is connected, And a third passage for ejecting the film material from the third die nozzle.

The first cylinder may include an eleventh region including a region where the first hopper hole is formed, a sixteenth region where the first cylinder nozzle is formed, and a region between the eleventh region and the sixteenth region, 12 zone, a thirteenth zone, a fourteenth zone and a fifteenth zone, wherein the eleventh zone is divided into a temperature range of 143 to 148 DEG C, the twelfth zone is divided into a temperature range of 143 to 148 DEG C, In the temperature range of 140 to 145 占 폚, in the temperature range of 140 to 145 占 폚 in the 14th zone, in the temperature range of 145 to 150 占 폚 in the 15th zone, in the temperature range of 145 to 150 占 폚 And the second cylinder is divided into zones 21, 22, 23, 24, 25 and 26 corresponding to the respective zones of the first cylinder , The 21st zone has a temperature of 167 to 170 DEG C , The twenty-second zone has a temperature range of 160 to 165 ° C, the twenty-third zone has a temperature range of 150 to 155 ° C, the twenty-fourth zone has a temperature range of 140 to 145 ° C, A control temperature is set in a temperature range of 160 to 165 DEG C in the temperature range of 160 DEG C to 165 DEG C in the 26th zone, and the third cylinder is divided into the same area as the first cylinder, The control temperature can be set.

The control temperature is set in a temperature range of 160 to 165 ° C for the first die nozzle, the control temperature is set for a temperature range of 160 to 165 ° C for the second die nozzle, The control temperature can be set in the temperature range of 155 占 폚.

The three-layered antistatic film producing apparatus of the present invention has the effect of reducing the difference in shrinkage degree of each layer film and increasing the interlaminar adhesive strength by separately controlling the temperature by dividing the cylinder and the dice into predetermined sections.

Further, the antistatic film production apparatus of the three-layer structure of the present invention has an effect of preventing the film from breaking in the continuous process because the elongation rate of the layered film is not lowered.

Further, the antistatic film producing apparatus of the present invention having a three-layer structure prevents backflow of the resin in the cylinder, increases the moldability due to uniform mixing of constituent components and sufficient melting, There is an effect that can be prevented.

1 is a plan view of an antistatic film device having a three-layer structure according to an embodiment of the present invention.
2 is a vertical cross-sectional view taken along line AA of Fig.
3 is a vertical cross-sectional view taken along line BB of Fig.
4 is a vertical sectional view of CC of Fig.

Hereinafter, an antistatic film producing apparatus of a three-layer structure according to the present invention will be described with reference to the accompanying drawings and drawings.

1 is a plan view of an antistatic film device having a three-layer structure according to an embodiment of the present invention. 2 is a vertical sectional view taken along the line A-A in Fig. 3 is a vertical sectional view taken along the line B-B in Fig. 4 is a vertical sectional view taken along the line C-C of Fig.

1 to 4, an apparatus for manufacturing an antistatic film having a three-layer structure according to an embodiment of the present invention includes a first cylinder part 100, a second cylinder part 200, and a third cylinder part 300 And a die 400.

Since the antistatic film production apparatus of the three-layer structure is an apparatus for producing an antistatic film formed in a three-layer structure, it comprises three cylinder portions 100, 200 and 300 and one die 400, The parts 100, 200, and 300 are coupled to supply the film material to one die 400. Therefore, the die 400 forms a layered film by spraying the film material supplied from the three cylinders 100, 200, and 300, and again the layered film is adhered to form one antistatic film. Meanwhile, the three cylinder portions 100, 200, and 300 have the same structure, and the controlled temperature is set differently.

The first cylinder part 100 includes a first hopper 110, a first cylinder 120, and a first screw 130. The first cylinder part 100 forms an outer layer film by spraying a film material constituting the outer layer in the antistatic film. The outer layer is formed of components such as linear low density polyethylene (LLDPE), high density polyethylene (HDPE), aluminum fiber, antistatic agent and octene and polyolefin elastomer.

The first hopper 110 is coupled to one side of the first cylinder 120 and supplies the film material to the inside of the first cylinder 120. The first hopper 110 is formed of a general hopper, and a detailed description thereof will be omitted.

The first cylinder 120 is hollow and has one end 121 opened to insert the first screw 130 and the first cylinder nozzle 123 to the other end 122. The first cylinder 120 is formed with a first hopper hole 125 through which the first hopper 110 is coupled.

The first cylinder 120 is divided into a plurality of zones along the longitudinal direction, and the control temperature is set in a temperature range independently set. The first cylinder 120 is preferably divided into six zones, and the control temperature is determined in a temperature range that is set independently of each other. To this end, the first cylinder 120 is wound with a heat wire on the outside or inside the wall of each of the sections, and the heat wire (not shown) is independently controlled. More specifically, the first cylinder 120 includes an eleventh section 120a, a twelfth section 120b, a thirteenth section 120c, a fourteen section 120d, a fifteen section 120e, and a sixteenth section 120f Respectively. Here, the eleventh zone 120a is an area including a region where the first hopper hole 125 is formed. The sixteenth region 120f is a region in which the first cylinder nozzle 123 is installed and the twelfth region 120b to the fifteenth region 120e is an area between the eleventh region 120a and the sixteenth region 120f it means.

The eleventh zone 120a is an area including a region where the first hopper hole 125 is formed and is controlled at a relatively highest control temperature. The eleventh zone 120a preferably has a control temperature set in a temperature range of 143 to 148 占 폚.

The twelfth region 120b is an area in contact with the eleventh region 120a and the control temperature is set in a temperature range of 143 to 148 占 폚 like the eleventh region 120a. The twelfth zone 120b is preferably set at a control temperature lower than the eleventh zone 120b.

The thirteenth zone 120c is an area in contact with the twelfth zone 120b and the control temperature is set to a temperature lower than the twelfth zone 120b. The thirteenth zone 120c is preferably set to a temperature lower than the twelfth zone 120b in the temperature range of 140 to 145 占 폚.

The 14th zone 120d is an area in contact with the 13th zone 120c and the control temperature is set in the temperature range of 140 to 145 占 폚 as in the 13th zone 120c. The 14th zone (120d) is preferably set to a temperature lower than the 13th zone (120c).

The fifteenth region 120e is a region between the fourteenth region 120d and the sixteenth region 120f and the control temperature is set to a temperature higher than the fourteenth region 120d. The control temperature of the fifteenth region 120e is set in a temperature range of 145 to 150 ° C.

The sixteenth region 120f is a region where the first cylinder nozzle 123 is installed and the control temperature is set in a temperature range of 145 to 150 ° C as in the fifteenth region 120e. The control temperature of the 16th (120f) zone means the control temperature of the first cylinder nozzle 123.

The eleventh zone 120a and the twelfth zone 120b are set at the same temperature range and the thirteenth zone 120c and the fourteenth zone 120d are set at the eleventh zone 120a and the twelfth zone 120b. The control temperature is set in a lower temperature range than the zone 120b and the fifteenth zone 120e and the sixteenth zone 120f are controlled in the temperature range of the middle range of the eleventh zone 120a and the thirteenth zone 120c The temperature is set.

When the control temperature for each zone is higher than the set temperature range, the elongation of the film formed by spraying from the die is lowered, and the film is broken during the manufacturing process. Further, when the control temperature is lower than the set temperature range, the film material is not sufficiently melted, which makes it difficult to spray the film material and form the film material accordingly. Also, when the order of the set temperature ranges is changed for each zone, that is, when the relative temperature distribution of each zone is changed, backflow phenomenon of the base resin occurs in the inside of the cylinder, The mixing becomes uneven and the surface of the film is smudged.

The first screw 130 is formed of a general screw and inserted from one end of the first cylinder 120 to the inside thereof. The first screw 130 is rotated by a separate motor so that the film material supplied from the first hopper 110 is transported from the first cylinder 120 toward the first cylinder nozzle 123 do. The first screw 130 preferably rotates at a rotational speed of 10 to 15% of the maximum rotational speed of the motor and transfers the film material. If the rotation speed of the first screw 130 is too fast, the charge amount must be increased more than the predetermined amount, so that the material cost is increased. If the rotational speed of the first screw 130 is too low, the surface resistance of the film may vary from position to position and the characteristics of the film may become uneven.

The second cylinder 200 includes a second hopper 210, a second cylinder 220, and a second screw 230. The second cylinder part 200 forms a middle layer film by spraying a film material constituting an intermediate layer in the antistatic film. The middle layer is formed of components such as linear low density polyethylene (LLDPE), high density polyethylene (HDPE), aluminum fiber, antistatic agent and octene.

The second hopper 210 is coupled to one side of the second cylinder 220 and supplies the film material to the inside of the second cylinder 220. The second hopper 210 is formed of a general hopper, and a detailed description thereof will be omitted.

The second cylinder 220 is hollow and has one end 221 opened to insert the second screw 230 and the second cylinder nozzle 223 to the other end 222. The second cylinder 220 has a second hopper hole 225 formed at an upper portion thereof to which the second hopper 210 is coupled.

The second cylinder 220 is divided into a plurality of zones along the longitudinal direction, and the control temperature is set in a temperature range independently set. The second cylinder 220 is preferably divided into six zones, and the control temperature is determined in a temperature range that is set independently of each other. And the six regions of the second cylinder are set as regions corresponding to the respective regions of the first cylinder. To this end, the second cylinder 220 is wound with a heating wire on the outer side or inside the wall of each zone, and the heating wire (not shown) is independently controlled. More specifically, the second cylinder 220 includes a twenty-first zone 220a, a twenty-second zone 220b, a twenty-third zone 220c, a twenty-fourth zone 220d, a twenty-fifth zone 220e, (220f). Here, the twenty-first zone 220a is a region including a region where the second hopper hole 225 is formed. The twenty-sixth zone 220f is an area in which the second cylinder nozzle 223 is installed and the twenty-second zone 220b to the twenty-fifth zone 220e is an area between the twenty-first zone 220a and the twenty-sixth zone 220f it means.

The twenty-first zone 220a is a region including a region where the second hopper hole 225 is formed, and is controlled at a relatively highest control temperature. The control temperature is set in the temperature range of 167 to 170 DEG C in the 21st zone 220a.

The twenty-second zone 220b is an area in contact with the twenty-first zone 220a, and is controlled to a control temperature lower than the eleventh zone 220a. The control temperature is set in the temperature range of 160 to 165 ° C in the 22nd zone (220b).

The twenty-third zone 220c is an area in contact with the twenty-second zone 220b, and the control temperature is set to a temperature lower than the twenty-second zone 220b. The control temperature is set in the temperature range of 150 to 155 ° C in the 23rd zone (220c).

The twenty-fourth zone 220d is an area in contact with the twenty-third zone 220c and is controlled to a control temperature lower than the twenty-third zone 120c. The 24th zone 220d is preferably set at a control temperature in a temperature range of 140 to 145 占 폚.

The twenty-fifth zone 220e is an area between the twenty-fourth zone 220d and the twenty-sixth zone 220f and is controlled to a control temperature higher than the twenty-fourth zone 220d. The control temperature of the twenty-fifth zone 120e is set in a temperature range of 160 to 165 ° C.

The 26th zone 220f is a zone where the second cylinder nozzle 223 is installed and the control temperature is set in a temperature range of 160 to 165 ° C as in the 25th zone 220e. The control temperature of the 26th (220f) zone means the control temperature of the second cylinder nozzle 223.

The control temperature is gradually lowered from the 21st zone 220a to the 24th zone 220d and the 25th zone 220e and the 26th zone 220f are controlled at the same control temperature and the 24th zone 220d, Lt; RTI ID = 0.0 > control temperature.

When the control temperature for each zone is higher than the set temperature range, the elongation of the film formed by spraying from the die is lowered, and the film is broken during the manufacturing process. Further, when the control temperature is lower than the set temperature range, the film material is not sufficiently melted, which makes it difficult to spray the film material and form the film material accordingly. Also, when the order of the set temperature ranges is changed for each zone, that is, when the relative temperature distribution of each zone is changed, backflow phenomenon of the base resin occurs in the inside of the cylinder, The mixing becomes uneven and the surface of the film is smudged.

The second screw 230 is formed of a general screw and is inserted from one end of the second cylinder 220 to the inside thereof. The second screw 230 is rotated by a separate motor so that the film material supplied from the second hopper 210 is transported from the inside of the second cylinder 220 toward the second cylinder nozzle 223 do. The second screw 230 preferably rotates at a rotational speed of 10 to 15% of the maximum rotational speed of the motor and transfers the film material. If the rotation speed of the second screw 230 is too high, the charge amount must be increased more than the predetermined amount, so that the material cost is increased. If the rotational speed of the second screw 230 is too low, there is a difference in the surface resistance value of the film depending on the position, and the characteristics of the film become uneven.

The third cylinder 300 includes a third hopper 310, a third cylinder 320, and a third screw 330. The third cylinder part 100 forms an inner layer film by spraying a film material constituting an inner layer in the antistatic film. The inner layer is formed to include components such as linear low density polyethylene (LLDPE), high density polyethylene (HDPE), aluminum fiber, antistatic agent and octene.

The third hopper 310 is coupled to one side of the third cylinder 320 and supplies the film material to the inside of the third cylinder 320. The third hopper 310 is formed of a general hopper, and a detailed description thereof will be omitted.

The third cylinder 320 of the third cylinder 300 is set at the same control temperature in the same temperature range as that of the first cylinder 120. [ That is, the third cylinder 320 is divided into a plurality of zones along the longitudinal direction, and the control temperature is set in a temperature range that is independently set. Preferably, the third cylinder 320 includes a region where the third hopper hole 310 is formed A thirty-sixth region 320f in which the third cylinder nozzle 323 is formed and a thirty-second region 320f in which the thirty-first region 320a, the thirty-third region 320b, and the thirty- The control temperature is set in the same temperature range as the eleventh to the sixteenth regions 120a to 120f and the thirty-third region 320b, the thirty-third region 320c, the thirty-fourth region 320d and the thirty- do. Therefore, a detailed description thereof will be omitted.

The third screw 330 is formed of a general screw and inserted from one end of the third cylinder 320 to the inside thereof. The third screw 330 is rotated by a separate motor and the film material supplied from the third hopper 310 is transferred from the third cylinder 320 toward the third cylinder nozzle 323 do. The third screw 330 preferably rotates at a rotational speed of 10 to 15% of the maximum rotational speed of the motor and transfers the film material. If the rotational speed of the third screw 330 is too high, the charge amount must be increased more than the predetermined amount, so that the material cost is increased. If the rotational speed of the third screw 330 is too slow, the surface resistance of the film may vary from position to position and the characteristics of the film may become uneven.

The die 400 has a cylindrical shape or a cylindrical shape with a predetermined thickness and is formed to include a first passage 410, a second passage 420, and a third passage 430 spaced from each other on an outer circumferential surface. The first passage 410 is connected to the first cylinder part 100 to receive and spray the film material of the outer layer film to form an outer layer film and the second passage 420 is connected to the second cylinder part 200 The first passage 430 is connected to the third cylinder part 300 to supply and discharge the film material of the inner layer film to form an inner layer film. The dies 400 are coupled to each other while forming an outer layer film, an intermediate layer film, and an innerlayer film through a separate blower.

The first passage 410 is formed to extend from the outer circumferential surface of the dice 400 to the upper surface and includes a first injection port 411 formed on the outer circumferential surface and a first dice nozzle 412 formed on the upper surface. In addition, the first passage 410 may further include a first receiving port 413 in which a film material is temporarily received. The first passage 410 is connected to the first cylinder 120 of the first cylinder part 100 and receives the film material of the outer layer to form an outer layer film.

The first injection port 411 is formed at one end of the first passage 410 and is opened at an outer peripheral surface of the dice 400. The first injection port 411 is coupled with the first cylinder nozzle 123 of the first cylinder 120 inserted therein. The first injection port 411 preferably has a vertical cross-sectional shape corresponding to a vertical cross-sectional shape of the first cylinder nozzle 123.

The first die nozzle 412 is the other end of the first passage 410 and is formed as a ring-shaped opening on the upper surface of the die 400. The first die nozzle 412 is formed of a ring having a predetermined width and is formed to have a radius corresponding to the width of the antistatic film to be manufactured. The first die nozzle 412 injects the film material supplied through the first injection port 411 to form an outer layer film. The first die nozzle 412 is heated by a heat wire (not shown) provided around the first die nozzle 412, and a control temperature is set in a temperature range of 160 to 165 ° C. If the control temperature of the first die nozzle 412 is too low, the elongation of the film is lowered and the film is broken. If the control temperature of the first die nozzle 412 is too high, the elongation of the film is excessively increased and the thickness of the film becomes locally uneven.

The first receiving port 413 is formed in a region adjacent to the first die nozzle 412 in the middle of the first passage 410 and has a cross section that is larger than the vertical cross- . The first receiving port 413 temporarily collects the film material flowing through the first passage 410 and then supplies the film material to the first die nozzle 412 so that the film material supplied to the first die nozzle 412 does not break .

The second passage 420 is formed to extend from the outer circumferential surface of the die 400 to the upper surface and includes a second injection port 421 formed on the outer circumferential surface and a second die nozzle 422 formed on the upper surface. In addition, the second passage 420 may further include a second receiving port 423 in which the film material is temporarily received. The second passage 420 is connected to the second cylinder 220 of the second cylinder 200 and receives the middle layer of film material to form an intermediate layer film.

The second injection port 421 is formed at one end of the second passage 420 and is open at an outer peripheral surface of the die 400. The second injection port 421 is inserted and coupled with the second cylinder nozzle 223 of the second cylinder 220. The second injection port 421 preferably has a vertical cross-sectional shape corresponding to a vertical cross-sectional shape of the second cylinder nozzle 223.

The second die nozzle 422 is the other end of the second passage 420 and is formed as a ring-shaped opening on the upper surface of the die 400. The second die nozzle 422 is formed of a ring having a predetermined width and is formed to have a radius corresponding to the width of the antistatic film to be manufactured. The second die nozzle 422 is formed to be positioned inside the first die nozzle 412. That is, the diameter of the second die nozzle 422 is smaller than that of the first die nozzle 412. The second die nozzle 422 injects the film material supplied through the second injection port 421 to form an intermediate layer film. The second die nozzle 422 is heated by a heat wire (not shown) installed around the second die nozzle 422, and a control temperature is set in a temperature range of 160 to 165 ° C. If the control temperature of the second die nozzle 422 is too low, the elongation of the film is lowered and the film is broken. If the control temperature of the second die nozzle 422 is too high, the elongation of the film is excessively increased and the thickness of the film becomes locally uneven.

The second receiving port 423 is formed in a region adjacent to the second die nozzle 422 in the middle of the second passage 420. The second receiving port 423 has a cross section that is larger than the vertical cross- . The second receiving opening 423 temporarily collects the film material flowing through the second passage 420 and then supplies the film material to the second die nozzle 422 so that the film material supplied to the second die nozzle 422 is not broken .

The third passage 430 is formed to extend from the outer circumferential surface of the dice 400 to the upper surface and includes a third injection port 431 formed on the outer circumferential surface and a third dice nozzle 432 formed on the upper surface. In addition, the third passage 430 may further include a third receiving port 433 in which a film material is temporarily received. The third passage 430 is connected to the third cylinder 320 of the third cylinder 300 and receives the film material of the inner layer to form an inner film.

The third injection port 431 is formed at one end of the third passage 430 and is open at the outer peripheral surface of the die 400. The third injection port 431 is inserted with the third cylinder nozzle 323 of the third cylinder 320 inserted therein. The third injection port 431 preferably has a vertical cross-sectional shape corresponding to a vertical cross-sectional shape of the third cylinder nozzle 323.

The third die nozzle 432 is the other end of the third passage 430 and is formed as a ring-shaped opening on the upper surface of the die 400. The third die nozzle 432 is formed of a ring having a predetermined width and is formed to have a radius corresponding to the width of the antistatic film to be manufactured. The third die nozzle 432 is formed to be located inside the second die nozzle 422. That is, the diameter of the third die nozzle 432 is smaller than that of the second die nozzle 422. The third die nozzle 432 injects the film material supplied through the third injection port 431 to form an inner layer film. The third die nozzle 432 is heated by a heat wire (not shown) installed around the third die nozzle 432, and a control temperature is set in a temperature range of 150 to 155 ° C. If the control temperature of the third die nozzle 432 is too low, the elongation of the film is lowered and the film is broken. If the control temperature of the third die nozzle 432 is too high, the elongation of the film is excessively increased and the thickness of the film becomes locally uneven.

The third receiving port 433 is formed in a region adjacent to the third die nozzle 432 in the middle of the third passage 430. The third receiving port 433 has a cross section that is larger than the vertical cross- . The third receiving port 433 temporarily collects the film material flowing through the third passage 430 and then supplies the film material to the third die nozzle 422 so that the film material supplied to the third die nozzle 432 is not broken .

The film formed by the die 400 has a three-layer structure and is formed into a ring shape, and after being cooled, it is overlapped with two layers. Next, in the state that the ring-shaped film is overlapped with two layers, both side ends are cut into a predetermined width and separated and formed into an antistatic film having one layer and a three-layer structure.

The embodiments of the present invention are described in order to more fully explain the present invention to those skilled in the art, and the following embodiments may be modified into various other forms, The present invention is not limited to the embodiment. Rather, these embodiments are provided so that this disclosure will be more faithful and complete, and will fully convey the scope of the invention to those skilled in the art.

100: first cylinder part 110: first hopper
120: first cylinder 130: first screw
200: second cylinder part 210: second hopper
220: second cylinder 230: second screw
300: third cylinder part 310: third hopper
320: third cylinder 330: third screw
400: Dice

Claims (3)

The first cylinder is hollow and has one end open to insert the first screw and a first cylinder nozzle to the other end, and the first cylinder is connected to the first hopper, the first cylinder, and the first screw. A first cylinder portion for supplying a film material of the outer layer, a second cylinder portion for supplying a film material of the outer layer,
The second cylinder having a hollow interior and an open end, the second screw being inserted and the second cylinder nozzle being coupled to the other end, and the second hopper, the second cylinder, and the second screw, A second cylinder portion for supplying a middle layer of film material, and a second hopper hole formed in the second hopper hole,
A third cylinder, and a third screw, wherein the third cylinder is hollow and has one end opened to insert the third screw, the third cylinder nozzle is coupled to the other end, and the third hopper, A third cylinder part in which a control temperature is set in a temperature range that is set independently and divided into a plurality of zones,
A cylindrical shape or a cylindrical shape having a predetermined thickness,
And a first die nozzle formed on an outer circumferential surface and connected to the first cylinder nozzle and formed in a ring shape on an upper surface of the first cylinder nozzle, wherein the film material of the outer layer supplied from the first cylinder through the first injection port A first passage injected from the first die nozzle
And a second die nozzle formed on an outer circumferential surface and formed in a ring shape on an upper surface and a second injection port connected to the second cylinder nozzle, wherein the middle layer film material supplied from the second cylinder portion through the second injection port A second passage injecting from the second die nozzle, and
And a third die nozzle formed on an outer circumferential surface and formed in a ring shape on an upper surface and a third die nozzle connected to the third cylinder nozzle, wherein the film material supplied from the third cylinder portion through the third injection port And a third passage for ejecting the droplets from the three nozzle nozzles. The method according to claim 1,
Wherein the first cylinder includes an eleventh region including an area in which the first hopper hole is formed, a sixteenth region in which the first cylinder nozzle is formed, and a twelfth region sequentially disposed in an area between the eleventh region and the sixteenth region, And the thirteenth zone is divided into a thirteenth zone and a fourteenth zone, the eleventh zone is divided into a temperature range of 143 to 148 DEG C, the twelfth zone is divided into a temperature range of 143 to 148 DEG C, Wherein said zone 14 is controlled in a temperature range of 140 to 145 ° C, said zone 15 is controlled in a temperature range of 145 to 150 ° C, said zone 16 is controlled in a temperature range of 145 to 150 ° C, The temperature is set,
The second cylinder is divided into zones 21, 22, 23, 24, 25 and 26 corresponding to the respective regions of the first cylinder, and the zones 21, 167 The temperature of the second zone is in the range of 160 to 165 DEG C, the temperature of the zone 23 is in the range of 150 to 155 DEG C, the temperature of the zone 24 is in the range of 140 to 145 DEG C, The control temperature is set in the temperature range of 160 ° C to 165 ° C for the zone 25, and the temperature range of 160 ° C to 165 ° C for the zone 26,
Wherein the third cylinder is divided into the same area as the first cylinder and the control temperature is set in the same temperature range. The method according to claim 1,
The first die nozzle has a control temperature set in a range of 160 to 165 ° C,
The second die nozzle has a control temperature set in a temperature range of 160 to 165 DEG C,
Wherein the third die nozzle has a control temperature set in a temperature range of 150 to 155 ° C.

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