KR100320224B1 - A pdp's barrier rib producing roll and a making method thereof - Google Patents

Abstract

The present invention is to manufacture a partition wall while adjusting the thickness and height by using a roll for manufacturing a ceramic partition wall of the PDP and a manufacturing method thereof, the center hole is formed in the center and a plurality of alignment holes formed around the center hole Thin disks and thick disks are alternately arranged in line; A hot wire inserted into the center holes of the thin plate disk and the rear plate disk in which the threads are formed at both ends is alternately arranged in a row, and a heating wire for generating heat is inserted into the round bar; By the nut is fastened to both ends of the round bar and the plurality of thin disk and the thick disk is fixed, characterized in that the roll for manufacturing PD partition wall, it is possible to manufacture a high, precise, fine partition wall, high brightness, high pixel per unit area By increasing the number of, there is an industrial use effect that the bulkhead of the high resolution PDP lower plate can be mass-produced at low cost and in a short time without waste of expensive slurry.

Description

Roll for manufacturing PD partition wall and its manufacturing method. {A PDP'S BARRIER RIB PRODUCING ROLL AND A MAKING METHOD THEREOF}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for forming / manufacturing a ceramic partition on a PDP (Plasma Display Panel) bottom plate, and in particular, a width of a PDP barrier rib using a roll for manufacturing the partition and a method of manufacturing the same. The present invention relates to a roll and a method of manufacturing the same, capable of precisely and easily adjusting height and height, reducing waste of bulkhead material, and mass production without defects.

Conventionally, a CRT (Cathode Ray Tube) is used as an image display device used for a monitor, a TV, an HDTV, or a multimedia of a computer, but the CRT consumes a lot of power, is bulky, and is a component. Not only is this complicated, heavier, and heavier, it also has technical limitations in creating large screens.

As a substitute for the conventional CRT image display device, the display device is thin, light, and has low power consumption. An LED (Light Emitting Diode) or an LCD (Liquid Crystal Display) is used. Although there was an image display device or a screen to be used, the LED method has yet to be difficult to combine and miniaturize its life and color colors, and the LCD method has a very high luminance or brightness of the image displayed on the screen. It is low, the viewing angle is narrow, therefore, there is a problem that the sharpness of the image to be implemented is low, the response speed is slow, it is difficult to enlarge the screen.

As a result of improving the problem of the LED or LCD image display device according to the prior art improved as described above, the fluorescent material in the unit of the pixel (Excite) to generate light, and a plurality of pixels gather to display an image PDP (Plasma Display Panel), a new image display device, is under development, attracting much attention as the next generation of large flat panel display devices, and continuing research to improve many features and reduce manufacturing costs compared to the early stage of development. Although progressing, there were many problems to be solved yet to apply industrially.

The PDP includes a top plate composed of a material such as glass, a dielectric, and a facing electrode that protects the front surface of the screen, and a red, green, and blue color. By checking the barrier rib and the address of dielectric and pixel, the electrode is formed on substrate such as glass. He + Xe gas (Gas) or Ne + Xe gas is sealed and filled between the lower plate and the upper plate.

In addition, the PDP is arranged by dividing the fluorescent material of each color in pixel units, and the display is called a direct current type PDP, and the fluorescent material of each color is alternated in the direction of a horizontal line or a vertical line crossing the entire PDP display panel. In the present invention, the present invention relates to an alternating current type PDP, which is arranged and distinguished from each other, and is displayed by a signal applied to an address electrode of a lower plate.

The PDP excites the R, G, and B phosphors by 147 mm ultraviolet rays generated by the plasma discharge of the gas, and is reduced to the ground state in the excited state. PDP is a gas discharge display device that displays an image by using visible light generated by a difference in energy.

In the PDP having the above characteristics, the manufacturing cost of the lower plate on which the barrier ribs are formed occupies a substantial part of the manufacturing cost of the PDP. The luminance or brightness is determined by the pitch, the thickness of the barrier, and the height of the barrier. )) Is determined.

In the current display device, the VGA (Video Graphics Array) method displays an image in a ratio of the number of pixels per screen in the ratio of horizontal to vertical = 648: 480, and in the XGA method to 1248: 1048. The larger the number of pixels, the higher the resolution of the displayed image. In the case of color, R, G, and B colors are collected to form one pixel.

In case of PDP, R, G, and B fluorescent materials are separated into barrier ribs so that a large number of pixels are arranged, and the smaller the fraction, the ratio of the thickness or width of the barrier to the area of the entire screen is smaller. Although excellent resolution can be obtained, there are still many problems to be technically solved in order to secure an industrially excellent fraction, and among them, the biggest challenge is to make the barrier rib thin and high.

Hereinafter, a method of manufacturing a partition wall of a PDP according to the prior art will be described with reference to the accompanying drawings.

1 is a schematic diagram of a PDP bulkhead manufacturing method using a silk printing method of the prior art, Figure 2 is a schematic diagram of a PDP bulkhead manufacturing method using a sandblast method of the prior art, Figure 3 is a PDP partition wall using a prior art pressing method It is a schematic diagram of a manufacturing method.

A silk printing method according to an embodiment of the prior art will be described in detail with reference to FIG.

A substrate 10 made of glass, an address electrode 30 having a uniform conductive material such as silver (Ag) formed on the substrate 10 at regular intervals, and an electrode 30 formed on the substrate 10. It consists of a dielectric layer 20 which is protected and coated with a constant thickness and a partition wall 40 formed by a silk printing method.

In the manufacturing method of the partition wall 40 having the above configuration, the silk printing is repeatedly performed until the predetermined height is required by the partition wall 40 using the silk printing method.

The method as described above is a procedure of generating the partition wall 40 by primary silk printing, and then silk printing again after the silk printed material of the partition wall 40 is solidified. Since the process is complicated, a precise alignment process of the silk printing equipment is required in order to re-silk print in the correct position, the production time is long, the production price is increased, and the shape of the finished partition wall 40 is There was a problem that the resolution of the finished PDP is not constant or uniform, and there are many defect occurrence rates, and difficulty in forming the spacing between partition walls in detail.

A sand blast method according to another embodiment of the prior art will be described in detail with reference to FIG. 2.

The substrate 10 made of glass, the electrode 30 formed of a conductive material such as silver (Ag), the dielectric 20 coated with a constant thickness, and the barrier material formed at a predetermined thickness on the dielectric 20 ( 50), a mesh-shaped mask 60 having a shape of a partition wall required on the partition material 50, and a nozzle fixed to the mask 60 at regular intervals. (Nozzle) 70.

Barrier rib manufacturing method according to the above configuration is a bulkhead material 50, which is thickly coated with a ceramic film (Sand), such as CaCO ₃ having a fine size from the nozzle 70 to a mask 60 and a thick film. By blowing at a high speed, the partition wall 50 is formed by removing a portion of the barrier material 55 except for the shape portion of the mask 60 and finally separating the mask 60.

However, the sand blasting method as described above has a problem in that it is difficult to control the manufacturing speed of the mask 60 and the sand sprayed from the nozzle 70, and wastes expensive bulkhead material by the removed portion.

In addition, a die press method according to another embodiment of the prior art will be described in detail with reference to FIG.

In the same manner as above, the glass substrate 10, the electrode 30 formed of a conductive material of silver (Ag), the dielectric 20 coated with a constant thickness, and the dielectric 20 are uniformly attached to the dielectric 20 at a predetermined thickness. The die barrier material 85, the die 90 having the necessary partition shape engraved thereon, and a die press 95 for fixedly attaching the die 90 and pressing the die 90 downward. It is composed.

The partition wall manufacturing method according to the above-described configuration operates a die press 95 provided at regular intervals on the partition material 85 so as to be operated directly downwards, so that a die die fixedly attached to the press 95 ( 90 pressurizes the partition material 85 and the partition material 85 is embossed into the shape of the partition wall 80 in a shape engraved in the mold 90.

However, in the press method as described above, the probability of failure of the embossed partition wall 80 during the release process in which the partition material 85 separates the mold 90 from the partition wall 80 formed by the mold 90. This appeared very high, and there was a problem that the press 95 had to have a higher release output than the pressure at the time of molding.

In addition, there is a photolithography method, which is not illustrated in the drawing, but this method uses a barrier material including a photo resist component or applies a photo resistor on the barrier material. By attaching a barrier-shaped mask (Mask) through the exposure, development, and printing process, it is a method of forming a partition.

However, the above method is also difficult to manufacture a mask, waste of bulkhead material, a large number of steps, such as time consuming, and the double layer method has been reported to the academic community. Again, there is a serious problem of waste of bulkhead material.

PDP, which has been spotlighted as an image display device for the next generation, greatly depends on the performance of brightness and resolution due to the uniformity of the height and width of the partition wall formed on the rear panel, and the width or thickness of the partition wall relative to the total PDP screen area. Since the performance is determined by the fraction which is the ratio of, reducing the width or thickness of the partition wall is the core of PDP manufacturing technology.

The conventional barrier rib manufacturing method has advantages and disadvantages, respectively, but it is difficult to reduce the width or thickness of the barrier rib to 50 μm or less, and it is difficult to manufacture the height of the barrier rib. As the fraction of the combined thickness reaches 15% to 25%, it is difficult to be commercialized, the manufacturing process is complicated, time-consuming, and expensive bulkhead material waste is required, which requires a lot of manufacturing costs and a high incidence rate of defects. It did not solve the problem of high back.

The present invention solves the above problems by forming the partition-shaped grooves or grooves in the thermoplastic film tape in an intaglio form, and applying a slurry, which is a ceramic partition material, on the top of the intaglio-forming grooves in the film, thereby achieving a precise partition shape. It is possible to provide a roll for manufacturing a PD barrier rib and a method of manufacturing the same, which are easy to mass-produce at a low cost without the waste of the barrier material and the occurrence of defects in the barrier rib. In order to achieve the above object, the present invention provides a plurality of thin disks and thick disks in which a central hole is formed in a central portion and a plurality of alignment holes are formed around the central hole, alternately arranged in a row; A hot wire inserted into the center holes of the thin plate disk and the rear plate disk in which the threads are formed at both ends is alternately arranged in a row, and a heating wire for generating heat is inserted into the round bar; A nut is fastened to both ends of the round bar, and the plurality of thin plate disks and thick plate disks are fixed. The present invention is characterized in that the present invention further comprises a center hole and a plurality of alignment holes in the thick plate and sheet metal, respectively. Forming the provided thin disk and the thick disk by a photo printing method, and removing the remaining portions in which the respective disk shapes are not formed by corrosion to make the thin disk and the thick disk; Polishing the outer edges of the thin disk and the thick disk in a round shape; After the thin disks and the thick disks made by the corrosion are arranged in turn one by one, insert a round bar into the center hole, the heating wire is inserted into the round bar to generate electricity, the alignment rod is inserted into the alignment hole By aligning, fastening the nut to the thread formed on both ends of the round bar is characterized in that the roll manufacturing method for manufacturing a PD barrier rib consisting of assembling a plurality of disks are fixed.

1 is a schematic diagram of a PDP bulkhead manufacturing method by a silk printing method of the prior art,

Figure 2 is a schematic diagram of a PDP bulkhead manufacturing method by the sandblasting method of the prior art,

3 is a schematic diagram of a PDP bulkhead manufacturing method by a press method of the prior art,

Figure 4 is a schematic diagram of a tape casting device according to an embodiment of the present invention,

5 is a state diagram of a thin plate disk and a thick plate disk disposed to be etched in a stainless disc according to an embodiment of the present invention,

6 is an assembled perspective view of the upper roll according to the present invention;

7 is a front view of a thin disk disc according to the present invention;

8 is an operation state diagram of the upper roll and the lower roll according to an embodiment of the present invention,

9 is an operation state diagram of the upper roll and the lower roll according to another embodiment of the present invention,

FIG. 10 is a state diagram of a partition wall in which a slurry is embedded by an upper roll according to another embodiment of the present invention; FIG.

11 is a 70-fold electron microscope cross-sectional photograph of a grooved film by the apparatus of the present invention,

12 is an 80-micrograph electron microscope cross-sectional photograph of a slurry embedded in a film by a tape casting apparatus,

Fig. 13 is an operational state diagram of the PDP in which the partition wall according to the present invention is formed.

Explanation of symbols on the main parts of the drawings

10,15 substrate 20,25 dielectric 30,35 electrode

40,50,80,100: bulkhead 55,85: material for bulkhead

60: mask 70: nozzle 90: mold

95 press 110 lower roll 120121 upper roll

130 transfer means 140 film tape 150 slurry

160: doctor braid 165: slurry container 170: green tape

210,211: thin plate disc 220,221: thick plate disc 230: alignment bar

240: screw 250,251: round bar 260: alignment hole

270: center hole 300: drive device 320: pressurization device

Hereinafter, a roll for manufacturing a PD barrier rib according to the present invention and a manufacturing method thereof will be described with reference to the accompanying drawings.

4 is a schematic diagram of a slurry tape casting apparatus according to an embodiment of the present invention, and FIG. 5 is a thin disk and a thick disk shape arranged to be etched in a stainless disc according to the present invention. 6 is an assembled perspective view of an upper roll consisting of a thin disk and a thick disk of the present invention, Figure 7 is a front view of the thin disk and the film according to the present invention, Figure 8 is an embodiment of the present invention Figure 9 is an operating state of the upper roll and the lower roll, Figure 9 is an operating state of the upper roll and the lower roll according to another embodiment of the present invention, Figure 10 is an example of the present invention, formed by the upper roll Fig. 11 is a cross-sectional state diagram in which sludge is formed into a partition wall by using a film, and Fig. 11 is a 70-magnification electron microscope cross-sectional photograph of a film having a groove formed by the apparatus of the present invention. The slurry 80 is cross-sectional magnification electron microscope photograph of an embedded state to groove on the film by the boot device, 13 is an operating state of the PDP barrier ribs are formed according to the present invention.

As an example of a tape casting apparatus to which the present invention is applied, referring to the attached FIG. 4, a clean and cleaned thermoplastic (PET) film tape (140) is a carrier ( Carrier Roll Film (Carrier Roll Film) wound around a plurality of times,

While heating the film tape 140 supplied from the carrier roll film, a thin disk 210 having a width, a thickness, or a pitch of 20 μm to 50 μm is embossed to form the embossed film on the film tape 140. A thick plate-shaped disc 220 having a width or a thickness or a pitch of 200 μm to 400 μm is engraved into the film by engraving the grooves or grooves having a partition shape and engraving the same. Embossing the same shape as the discharge cell on the tape 140, the thin disk 210 and the thick disk 220 has a radius of one embodiment, each of which differs in the order of 100μm in size and cross each other in order The upper roll (Roll) 120 and formed in a row,

Located in the lower portion of the upper roll (Roll) 120, applying a pressure while heating the film tape 140, the cylindrical lower roll (Roll) 110 to adjust the moving speed of the film tape 140 )and,

Slurry container 165 and doctor braid for applying or supplying slurry 150 to tape casting method on the film tape 140 in which the partition shape is engraved by the upper and lower rolls 110 and 120. In the tape casting device for PD partition wall comprising a slurry supply device consisting of (160),

The upper roll 120 for manufacturing the PD barrier ribs has a central hole 270 formed in a central portion thereof, and a plurality of thin disk disks 210 and a thick plate disk 220 in which a plurality of alignment holes 260 are formed around the central hole. Books are alternately arranged in a row, and the circular rods 250 having threads formed at both ends thereof are inserted to pass through the center holes 270 of the thin plate disk 210 and the thick plate disk 220 which are alternately arranged in line, and supply electricity. The heating wire 256 to receive heat is inserted into the inner hole 255 of the round bar 250, the nut 240 is fastened to the screw-shaped portions formed at both ends of the round bar 250, the plurality of thin disks ( 210 and the thick plate disk 220 are fixed.

In addition, the upper roll 120 is a photo printing (Photo Printing) the shape of the thin plate disk 210 and the thick plate disk 220, the center hole 270 and the alignment holes 260 are formed in the stainless steel of the plate and thin plate, respectively ) To form a disk-shaped thin disk 210 and a thick plate disk 220 by removing the remaining non-printed portion by etching or etching (Etching), and

Grinding the outer end edges of the thin plate disk 210 and the thick plate disk 220 in a round shape to facilitate the formation of a partition wall by the slurry 150;

After alternately arranging the thin plate disk 210 and the thick plate disk 220, a central rod 270 penetrated in a row is inserted into the round bar 250 having a thread formed at both ends, and further, the round bar 250 Into the inner hole 255 of the) is inserted a heating wire (256) that generates heat by the electricity applied, the alignment holes 260 penetrated in a row by inserting the alignment bar 230, a plurality of thin disk disk 210 and the thick plate Disk 220 is aligned and fixed, by fastening the nut (240) to both ends of the threaded round bar 250 is assembled and fixed to prevent the movement of the plurality of thin disk disk 210 and the thick plate disk 220 It is composed of steps.

Hereinafter, a roll for manufacturing a PD barrier rib having the above configuration and a manufacturing method thereof will be described in detail with reference to FIGS. 4 to 12.

As shown in Figures 5 to 6, the upper roll 120 of the configuration as described above and the center hole 270 and the photo printing method on a stainless steel plate having a thickness of 20㎛ to 50㎛ as an embodiment A plurality of alignment holes 260 are provided, and a plurality of planar shapes of the thin disk disc 210 to form a partition wall are printed, and the etching portion removes corrosion of the remaining portion of the thin disk disc 210 which is not printed. Let's do it.

In addition, the center hole 270 and the plurality of alignment holes 260 are provided at the same position to form a discharge cell shape, and the thin plate disc 210 and the thick plate disc 220 having a different length of radius have a flat shape. As an embodiment, a plurality of thick plate disks 220 are manufactured by printing and etching a stainless plate having a thickness of 200 μm or 400 μm by a photo printing method as described above.

In the above, the radius of the thin plate disk 210 is one embodiment than the radius of the thick plate disk 220, 100 μm or 200 μm larger, can be produced by photo printing and etching on the stainless plate having the respective thickness, On the contrary, as shown in FIG. 9, the radius of the thin plate disc 211 is 100 μm or 200 μm smaller than the radius of the thick plate disc 221. The upper roll 121 is photographed and etched on a stainless plate having a corresponding thickness. Can be produced.

6 to 8 illustrate an embodiment in which the radius of the thin disk disc 210 is larger than the radius of the thick plate disc 220, and FIGS. 9 to 10 are opposite in size to each other. Another embodiment shows a radius formed smaller than the radius of the thick plate disk 221.

7 shows that the outer edge edges of the thin disk disc 210 are rounded, so that grooves or grooves are easily formed in the film tape 140 in the same shape as the thin disk disc 210. At the same time, the shape of the barrier rib body 100 formed by embedding the slurry 150 in the groove or the groove formed in the film tape 140 is pressed onto the dielectric 20 of the PDP bottom plate. After the formation, the film tape 140 is removed, so that the shape of the partition body 100 is easily deformed without deformation, and FIG. 8 shows the AA cross section of FIG. 4, and FIG. 10 is the thick plate. By grinding the end edge cross section of the disk 221 in a round shape, the slurry 150 is coated directly on the dielectric 20 of the PDP bottom plate, and then directly formed by the upper roll 121. The partition wall 100 is easily embedded up to the part of the thin disk 211. Green, improve the flowability of the slurry 150 is a state of FIG.

The thin plate disks 210 and 211 and the thick plate disks 220 and 221 manufactured as described above are alternately arranged in a row, penetrating through the aligned central holes 270, and penetrating the round bar 250 having threads formed at both ends, and the round bar. The heating wire 256 is inserted into the inner hole 255 formed inside the 250 to generate heat when electricity is applied thereto.

In addition, in order to fix and align the thin plate disks 210 and 211 and the rear plate disks 220 and 221 arranged in a line as described above, the alignment rods through a plurality of alignment holes 260 formed around the center hole 270. 230 penetrates, and the alignment bar 230 is fixed so as not to move the plurality of disks by the close contact with the alignment hole 260.

By fastening and fixing the nuts 240 to the threads formed at both ends of the round bar 250 passing through the center holes 270 of the thin plate disks 210 and 211 and the rear plate discs 220 and 221 which are alternately arranged and aligned in a line as described above. The upper rolls 120 and 121 for manufacturing PD barrier ribs are manufactured.

The upper roll 120 manufactured by the method as described above is installed on the lower roll 110 of FIG. 4, while applying heat to the film tape 140 by the upper roll 120 and the lower roll 110. Grooves or grooves having a shape of the thin plate disk 210 having the same shape as that of the partition wall 100 to be formed on the lower plate are engraved on the upper portion of the film tape 140.

FIG. 11 is a cross-sectional view taken along the line B-B of FIG. 4, wherein the cross section of the groove formed on the film tape 140 is engraved on the film tape 140 as described above.

In this case, the lower roll 110 pressurizes the film tape 140 by the pressurizing device 320 so that grooves are well engraved on the film tape 140, and the driving device 300 is applied to the lower roll 110. The advancing speed of the film tape 140 is adjusted.

As described above, the partition wall 100 has a groove shape, and the film tape 140 engraved thereon is cooled at room temperature while being conveyed by a conveying means 130 configured as a conveyor belt. 150 is completely embedded in the groove by a slurry supply device comprising a slurry container 165 in which the 150 is stored and a doctor blade 160 for controlling the amount and thickness of the coated slurry. By applying and drying, a green tape 170 is produced.

12 is a photograph of an end face of the green tape 170 manufactured as described above, that is, a C-C cross section of FIG. 4 taken with an electron microscope at 80 magnification.

In addition, as shown in Figure 9, the upper roll 121 according to another embodiment of the present invention is installed on the lower roll 110 of the same structure and function as above.

The upper surface roll 121 of the PDP lower plate on which the slurry 150 is applied to a predetermined thickness directly on top of the dielectric 20 of the PDP lower plate having the address electrode 30 and the dielectric 20 formed on the glass plate 10. By introducing between and the lower roll 110, as shown in FIG. 10, the flowability of the slurry 150 is improved to form the partition 100.

FIG. 13 shows a glass substrate 15, an electrode 35, and a fluorescent object which emits color onto the discharge cell of the PDP plate under which the barrier rib 100 is formed by the above-described PDP barrier rib and the manufacturing method thereof. A PDP display device in which a PD + top plate made of a dielectric 25 is sealed, and a He + Xe or Ne + Xe gas is enclosed therebetween is discharged from the electrodes 30 and 35. The state of generating visible light due to energy difference while emitting 147 mm of ultraviolet light, and the fluorescent object is excited and reduced to the ground state is illustrated.

The present invention as described above, by forming a thin and uniform partition wall groove (groove) in the thermoplastic film tape 140 using the thin disk 210 of the partition wall shape of the upper roll 120, the groove ( The slurry can be completely embedded in the grooves, making the bulkhead manufacturing process simple, without wasting expensive slurry, and creating high, precise, sharp, high-precision ceramic bulkheads. Can be.

In addition, by easily changing the thickness and radius of the thin disk disks 210 and 211 and the thick disks 220 and 221 formed by etching, the thickness of the partition wall, the pitch spacing between the partition wall and the partition wall, the height of the partition wall is simple, uniformly formed partition By the wall 100, not only a VGA class with high brightness but also a PDP barrier rib having a high resolution of XGA level or more can be produced in large quantities.

By using the above-mentioned rolls for manufacturing the PD barrier ribs and the method thereof, a high, precise and fine barrier rib is manufactured, the area of the discharge space per unit area is increased, the luminance is increased, and the number of pixels per unit area is increased, so that the PDP has a high resolution. The bulkhead of the bottom plate can be mass-produced quickly and at low cost without waste of expensive slurry, and there is an industrial use effect that can easily adjust the width and height of the bulkhead.

Claims (4)

A central hole is formed in the center portion, and a plurality of thin disk discs and thick plate discs in which a plurality of alignment holes are formed around the central hole are alternately arranged in a row, The hot rod is inserted into the round bar, which is inserted into the center hole of the thin plate disk and the rear plate disk alternately arranged in the end of the round bar with the thread formed at both ends, and generates electricity, A plurality of alignment holes formed in the thin disc and the thick plate disc is inserted into the Jangyeol bar to move integrally, Rolls for manufacturing PD partition walls, characterized in that the plurality of thin plate disks and thick plate disks are integrally fixed by fastening nuts at both ends of the round bar. According to claim 1, Rolls for manufacturing PD barrier ribs by grinding the outer edges of the thin disc and the thick disc to have a round shape which is easy to form a partition and does not cause defects. The shape of the thin disk and the thick disk with the center hole and the alignment holes in the thick plate and the thin metal, respectively, is formed by the photo printing method, and the thin disk and the thick plate disk are removed by corrosion of the remaining portions which are not formed. Making steps, Grinding the outer edges of the thin disk and the thick disk in a round shape; The thin disk and the thick disk made of the corrosion by arranging one by one alternately, and then inserts a round bar in the center hole, the heating wire is inserted into the inside of the round bar to generate heat, the alignment rod is inserted into the alignment hole By aligning, fastening the nut to the screw thread formed on both ends of the round bar assembly of the plurality of disks are fixed so as to consist of a roll manufacturing method for manufacturing a PD barrier. The method of claim 3, wherein And a radius of the thin plate disc is larger than a radius of the thick plate disc or a radius of the thick plate disc is larger than a radius of the thin plate disc by a predetermined length.