KR102076251B1 - Multilayer structure for exfoliating and transferring ceramic green sheet - Google Patents

Abstract

The present invention relates to a stacked structure for peeling and transferring a ceramic green sheet. According to the present invention, the stacked structure for peeling and transferring a ceramic green sheet comprises: a ceramic porous body (200) connected to a lower surface of a peeling mold (100) which receives a suction force from a vacuum generation device, and distributing the suction force through a plurality of pores which are irregularly formed therein; a non-woven fabric (300) attached to a lower surface of the ceramic porous body (200), and distributing the suction force through a space between fibers by weaving the fibers which are irregularly arranged; and a steel plate (400) coupled to a lower surface of the non-woven fabric (300), having a plurality of through holes regularly formed to uniformly distribute the suction force, and having flat upper and lower surfaces to enlarge a contact area with the ceramic green sheet which is in contact with a lower surface to strongly adsorb and peel the ceramic green sheet.

Description

MULTILAYER STRUCTURE FOR EXFOLIATING AND TRANSFERRING CERAMIC GREEN SHEET}

The present invention relates to a laminated structure for peeling and conveying a ceramic green sheet, and more particularly, to a laminate as being bonded to an apparatus for peeling a ceramic green sheet used for manufacturing a multilayer ceramic capacitor from a film and transferring it to a predetermined position. The present invention relates to a laminated structure for peeling and conveying a ceramic green sheet capable of uniformly distributing suction force transmitted from a vacuum generating device through a structured structure so that the ceramic green sheet can be peeled off from the film without damage and transferred to a predetermined position without leaving. .

In general, multilayer ceramic capacitors are chip-type capacitors that play an important role in charging or discharging electricity when mounted on printed circuit boards of various electronic products such as mobile communication terminals, computers, and personal digital assistants (PDAs). Depending on the size and stacking form.

In order to manufacture such a multilayer ceramic capacitor, a ceramic green sheet is formed by continuously coating a slurry-type ceramic to a thin thickness of several to several tens of micrometers on a carrier film, and printing a predetermined pattern on the surface of the coated ceramic. A printing process for manufacturing a film, a peeling process for separating the ceramic green sheet cut into a predetermined shape from the carrier film, a laminating process for laminating the ceramic green sheet separated from the carrier film into a predetermined sheet, and laminated ceramic green The pressing process is performed to press the sheet to a predetermined pressure.

Here, since the alignment of the multilayer ceramic capacitor laminated structure is determined according to the precision of the peeling process of separating the ceramic green sheet from the carrier film, it is treated as a very important process in the manufacturing process of the multilayer ceramic capacitor.

1 is a view showing a peeling and conveying apparatus of a conventional ceramic green sheet.

Conventional ceramic green sheet peeling and conveying apparatus, as shown in Figure 1, the peeling table 10 for supporting and transporting the carrier film 11, the ceramic green sheet 12 is formed on the surface, and the ceramic In order to peel the green sheet 12 from the carrier film 11, the peeling mold 14 installed on the upper part of the peeling table 10 so as to be lifted and moved horizontally, and peeled off by the peeling mold 14 In order to stack and compress the ceramic green sheet 12a, the presser 16 is provided to be spaced apart from one side of the peeling table 10.

A plurality of vacuum holes 13 are formed at a lower surface of the peeling mold 14 to be connected to a vacuum generating device (not shown), and the suction force is transmitted, and the vacuum holes 13 are formed at both sides of the peeling mold 14. The cutter tool 15 for cutting the ceramic green sheet 12 adsorb | sucked to the lower surface of the peeling mold 14 by this is attached. That is, the air cylinder 20 is formed in the upper part of both sides of the peeling mold 14, and the front end part of the shaft 19 is joined to the back side of the cutting tool 15, and the said cutting tool 15 is the peeling mold 14 It is mounted to slide freely in the vertical direction from both sides of the.

And the presser 16 is equipped with the crimping member 18 which can be lifted up and down by the hydraulic press 17, and the said crimping member 18 is peeled from the said carrier film 11 by the peeling die 14. The upper portion is formed in a plate shape so that the ceramic green sheet 12a to be transported is seated.

In the conventional ceramic green sheet peeling and conveying apparatus having the above configuration, when the ceramic green sheet 12 is adsorbed to the lower surface of the peeling mold 14 by the suction force generated through the vacuum hole 13, the cutting is performed. The mechanism 15 descends along the side of the release mold 14 to cut the ceramic green sheet 12 to a constant size. As described above, the ceramic green sheet 12 is slid and moved horizontally while the ceramic green sheet 12 is adsorbed and cut on the lower surface of the peeling mold 14, so that the ceramic green sheet 12 is moved to the carrier film 11. Exfoliation).

Next, when the peeling mold 14 adsorbed the peeled ceramic green sheet 12a is transferred onto the presser 16 and lowered, the presser 16 is pressed on the ceramic green sheet adsorbed on the peeling mold 14 ( 12a) is pressurized to ascend so as to be compressed between the peeling mold 14 and the compactor 16. Accordingly, the peeled ceramic green sheets 12a may be sequentially stacked and pressed.

As described above, the ceramic green sheet 12 is directly adsorbed to the lower surface of the peeling mold 14. At this time, since the suction force is generated only at the portion where the vacuum hole 13 is formed, the ceramic green sheet 12 is lowered. There was a problem that the portion adsorbed to the vacuum hole 13 of the entire surface of the sheet 12 is damaged and deformed. Furthermore, since the number of vacuum holes that can be formed per unit area is limited, it is difficult to evenly distribute the suction force, and thus the ceramic green sheet 12 is torn during the peeling process or the ceramic green sheet 12 is stacked in the folded state. There was a problem.

Korea Patent Registration No. 10-0761992 Korea Utility Model Registration No. 20-0224034

An object of the present invention for solving the above problems is to provide a laminated structure for the peeling and transport of the ceramic green sheet that can transfer the same suction force to the entire surface of the ceramic green sheet to adsorb each portion of the surface of the ceramic green sheet at the same pressure To provide.

Another object of the present invention is to provide a laminated structure for peeling and transferring the ceramic green sheet which can minimize the damage of the ceramic green sheet in the peeling and conveying process of the ceramic green sheet.

Another object of the present invention is to improve the stacking alignment of the ceramic green sheets laminated in the transfer and lamination process of the ceramic green sheet, and to reduce the peeling and transfer of the ceramic green sheet, which can reduce the deformation of the ceramic green sheet generated in the lamination process. It is to provide a laminated structure for.

Another object of the present invention is to provide a laminated structure for peeling and transporting a ceramic green sheet which can improve the peeling accuracy in the peeling process of the ceramic green sheet.

Another object of the present invention is to peel and transfer ceramic green sheets to reduce the short rate of laminated ceramic green sheets by minimizing damage to ceramic green sheets, improving lamination alignment, reducing deformation, and improving peeling accuracy. It is to provide a laminated structure for.

In order to achieve the above object, the laminated structure for peeling and transporting the ceramic green sheet according to an embodiment of the present invention is connected to the lower surface of the peeling mold 100 receives the suction force from the vacuum generating apparatus, irregular inside Ceramic porous body 200 for dispersing the suction force through a plurality of pores formed; Non-woven fabric 300 is bonded to the lower surface of the ceramic porous body 200, the fibers arranged in a non-directional direction entangled is formed to disperse the suction force through the space between the fibers; And a plurality of through holes regularly formed on the lower surface of the nonwoven fabric 300 to uniformly disperse the suction force and have a flat upper and lower surface to contact the lower surface of the ceramic green sheet to contact the lower surface of the ceramic green sheet. The steel plate 400 is strongly adsorbed and peeled off.

Preferably, an adhesive layer 310 made of an adhesive is formed on an upper surface of the nonwoven fabric 300 adhered to the lower surface of the ceramic porous body 200, and the adhesive layer 310 is formed on the nonwoven fabric 300 rather than the ceramic porous body 200. Can be more strongly bonded.

Preferably, the steel plate 400 is formed in the first region 410 in which a plurality of through holes are formed, and the second region 420 extending in the edge of the first region 410 and in which a plurality of through holes are formed. And a third region 430 extending from an edge of the second region 420, wherein the number of through holes formed in the second region 420 is equal to the number of through holes formed in the first region 410. It may be more than the number per unit area.

Preferably, a plurality of first connection holes are formed in the ceramic porous body 200, a plurality of second connection holes are formed in the nonwoven fabric 300, and a plurality of third connection holes are formed in the steel plate 400. The ceramic porous body 200 is formed on the peeling mold 100 by a connecting member and a fixing member which simultaneously pass through the plurality of first connection holes, the plurality of second connection holes, and the plurality of third connection holes. The nonwoven fabric 300 and the steel plate 400 may be integrally fixed to the release mold 100.

Preferably, the second region 420 of the steel plate 400 is formed to extend from one side of the first region 410 but has a width smaller than that of the first region 410. 421 and a second-second region 422 extending from the other side surface perpendicular to the one side of the first region 410 and having a width longer than that of the first region 410. In the second region 420, a sealed region 460 may exist at a boundary between the 2-1 region 421 and the 2-2 region 422.

The present invention can provide a laminated structure for peeling and transporting the ceramic green sheet that can transfer the same suction force to the entire surface of the ceramic green sheet to adsorb each portion of the surface of the ceramic green sheet at the same pressure.

The present invention can provide a laminated structure for peeling and transferring the ceramic green sheet which can minimize the damage of the ceramic green sheet in the peeling and conveying process of the ceramic green sheet.

The present invention provides a laminate structure for peeling and conveying a ceramic green sheet which can improve the stacking alignment of the ceramic green sheets laminated in the transfer and lamination process of the ceramic green sheet and reduce the deformation of the ceramic green sheet generated during the lamination process. Can be provided.

The present invention can provide a laminated structure for peeling and transporting the ceramic green sheet that can improve the peeling accuracy in the peeling process of the ceramic green sheet.

The present invention provides a laminate for peeling and transferring ceramic green sheets, which reduces the short rate of laminated ceramic green sheets by minimizing damage to ceramic green sheets, improving lamination alignment, reducing deformation, and improving peeling accuracy. You can provide a structure.

1 is a view showing a peeling and conveying apparatus of a conventional ceramic green sheet.
2 is a view showing a state in which a laminated structure for peeling and transporting a ceramic green sheet according to an embodiment of the present invention is coupled to a device for peeling and transporting a ceramic green sheet.
3 is a view showing the configuration of a laminated structure for peeling and transporting a ceramic green sheet according to an embodiment of the present invention.
4 is a view showing the configuration of a steel plate included in a laminated structure for peeling and transporting a ceramic green sheet according to an embodiment of the present invention.
5 is a view showing the configuration of a steel plate included in a laminated structure for peeling and transporting a ceramic green sheet according to another embodiment of the present invention.
6 is a view showing a method of manufacturing a laminated structure for peeling and transporting a ceramic green sheet according to an embodiment of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail through exemplary drawings. In adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are assigned to the same components as much as possible, even if displayed on different drawings.

In the following description of embodiments of the present invention, detailed descriptions of related well-known configurations or functions will be omitted if it is determined that the understanding of the embodiments of the present invention is impeded.

In addition, in describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are only for distinguishing the components from other components, and the nature, order or order of the components are not limited by the terms.

Laminated Structure for Peeling and Transfer of Ceramic Green Sheet

2 to 5, the structure and function of the laminated structure for peeling and transferring the ceramic green sheet according to the embodiment of the present invention will be described below.

2 is a view showing a state in which a laminated structure for peeling and transporting a ceramic green sheet according to an embodiment of the present invention is coupled to a device for peeling and transporting a ceramic green sheet. 3 is a view showing the configuration of a laminated structure for peeling and transporting a ceramic green sheet according to an embodiment of the present invention.

Referring to FIG. 2, a laminate structure (hereinafter, referred to as “the present laminate structure”) for peeling and conveying a ceramic green sheet according to an embodiment of the present invention is a peeling and conveying apparatus of a ceramic green sheet (hereinafter, “ It is used in conjunction with a "transfer device." That is, the present laminate structure is coupled to the lower surface of the peeling mold 100 located in the lower portion of the transfer device. In this case, the detailed description of the peeling mold 100 is replaced with the description of the peeling mold 14 of FIG. 1.

Referring to FIG. 3, the laminate structure includes a ceramic porous body 200, an adhesive layer 310, a nonwoven fabric 300, and / or a steel plate 400.

The ceramic porous body 200 is connected to the lower surface of the peeling mold 100. A plurality of pores are irregularly formed in the ceramic porous body 200. The suction force generated in the vacuum generating device is transmitted to the ceramic porous body 200 through the plurality of vacuum holes 13 formed in the peeling mold 100, and the suction force is transmitted by the plurality of pores formed in the ceramic porous body 200. It is more densely dispersed in the ceramic porous body 200. At this time, the number per unit area of the pores formed in the ceramic porous body 200 is larger than the number per unit area of the vacuum hole 13 formed in the peeling mold 100.

The ceramic porous body 200 is manufactured by a method of injecting bubbles into a high concentration inorganic slurry to form pores therein. The ceramic porous body 200 transmits suction power from the peeling mold 100 without loss due to its high permeability to fluid flow and a low apparent density. At the same time, there is an advantage that it is easy to install. Further, the suction force is evenly distributed in all parts of the ceramic porous body 200 by the numerous pores therein. Detailed description of the method of manufacturing the ceramic porous body 200 will be described later.

The nonwoven fabric 300 is bonded to and bonded to the lower surface of the ceramic porous body 200. The nonwoven fabric 300 is formed by intertwining fibers arranged in an arbitrary direction that is not defined, thereby forming a space between the fibers. Through the space inside the nonwoven fabric 300 thus formed, the suction force transmitted from the plurality of pores of the ceramic porous body 200 is once again evenly distributed in all parts of the nonwoven fabric 300.

The nonwoven fabric 300 can secure a high permeation flow rate even at low pressure and can be low in price, thereby lowering the manufacturing cost of the laminate structure. In addition, the nonwoven fabric 300 of the present laminate structure has a uniform arrangement of fibers and a small maximum pore diameter but excellent breathability, thereby uniformly distributing the suction force transmitted throughout the surface and minimizing the loss of the suction force. Detailed description of the manufacturing method of such a nonwoven fabric 300 will be described later.

Meanwhile, an adhesive layer 310 is formed between the nonwoven fabric 300 and the ceramic porous body 200. The adhesive layer 310 is formed by applying a pressure-sensitive adhesive on the upper surface of the nonwoven fabric 300, and by adhering the nonwoven fabric 300, on which the adhesive layer 310 is formed, to the lower surface of the ceramic porous body 200-adhesion to the ceramic porous body 200 A structure of layer 310-nonwoven 300 is formed. The adhesive layer 310 is more strongly bonded to the nonwoven fabric 300 than the ceramic porous body 200 because the adhesive constituting the adhesive layer 310 causes a chemical reaction with the fibers constituting the nonwoven fabric 300. For this reason, the adhesive does not transfer to the lower surface of the ceramic porous body 200 when the nonwoven fabric 300 is separated (removed) from the ceramic porous body 200. As a result, the transferred adhesive does not cause the problem of reducing pores of the ceramic porous body 200 to reduce suction force, and it is unnecessary to remove the adhesive that has been transferred to the ceramic porous body 200. There is an effect of facilitating management of the laminated structure.

The steel plate 400 is coupled to the lower surface of the nonwoven fabric 300. The steel plate 400 is made of steel, and a plurality of through holes are regularly formed in the steel plate 400 and have a flat upper and lower surface (surface). As a result, the suction force transmitted through the voids of the nonwoven fabric 300 is further uniformly distributed, and the contact area with the ceramic green sheet adsorbed to the lower surface of the steel plate 400 through the flat surface is further expanded to further increase the ceramic green sheet. Strongly adsorbed. The steel plate 400 is composed of a plurality of areas having a different number of through holes per unit area, which will be described later.

When the present laminated structure configured as described above is connected to the lower surface of the peeling die 100 of the conveying device, the suction force generated in the vacuum generating device is very uniformly dispersed throughout the surface of the ceramic greenst while passing through the present laminated structure. As a result, when the ceramic green sheet is peeled off and adsorbed on the lower surface of the present laminated structure, the problem of damage to the green sheet itself, such as tearing of the ceramic green sheet caused by a biased suction force on a specific portion, a problem that only a part of the ceramic green sheet is peeled off, ceramic Prevents green sheet folding problems.

4 is a view showing the configuration of a steel plate included in a laminated structure for peeling and transporting a ceramic green sheet according to an embodiment of the present invention.

Referring to FIG. 4, the steel plate 400 constituting the laminate includes a first region 410, a second region 420, and / or a third region 430, and connects the connection hole 440. Include.

The first region 410 extends from the center point of the steel plate 400 in the direction toward the outside of the steel plate 400 to have a square shape. A plurality of through holes 410 is formed in the first region 410. Air is sucked through the through-holes formed as described above and the ceramic green sheet is adsorbed by the suction force generated at this time. In this case, the through holes of the first region 410 are formed at equal intervals in all directions.

The second region 420 extends from the edge of the first region 410 and is formed in a square strip shape. In the second region 420, a plurality of through-holes 420 may be formed, for example, a point hatch having a higher density than that of the point 410. In this case, the number of the through-holes formed in the second area 420 is greater than the number of the through-holes formed in the first area 410 per unit area. That is, for the same area, a larger number of through holes is formed in the second region 420 than in the first region 410. In other words, the through-hole is formed in the second region 420 more densely than the first region 410.

As a result, a greater suction force is generated in the second region 420 than in the first region 410, thereby adsorbing the edge portion of the ceramic green sheet that is in contact with the second region 420 with a greater force. That is, by adsorbing the edge of the ceramic green sheet more strongly than the inside, the ceramic green sheet can be peeled and lifted more stably, thereby solving the problem that the ceramic green sheet is not torn or partially peeled off during the peeling and lifting. do.

The third region 430 extends from the edge of the second region 420 to the edge of the steel plate 400, and is formed in a square strip shape. The through hole is not formed in the third region 430. That is, the third region 430 is in the form of a thin film of steel without a through hole.

As a result, it is possible to prevent a problem that the air sucked into the gap between the steel plate 400 and the nonwoven fabric 300. That is, since there is no through hole in the third region 430, the suction force transmitted from the void of the nonwoven fabric 300 acts completely on the surface of the third region 430. Therefore, the third region 430 is adsorbed by the nonwoven fabric 300 with a strong force, and thus there is no gap between the steel plate 400 and the nonwoven fabric 300 so that air does not flow out. That is, since the suction force does not flow to the outside to adsorb the ceramic green sheet with a stronger suction force.

Furthermore, a plurality of connection holes 440 and third connection holes are formed at the vertex portion where the edges of the third region 430 of the steel plate 400 meet. In the nonwoven fabric 300 and / or the ceramic porous body 200 which are stacked on the upper surface of the steel plate 400, a connection hole is formed at a portion of the steel plate 400 that contacts the connection hole 440 of the steel plate 400. The connection hole formed in the ceramic porous body 200 is called a first connection hole, and the connection hole formed in the nonwoven fabric 300 is called a second connection hole. The first connection hole, the second connection hole, and the third connection hole 440 are simultaneously penetrated by a connection member (not shown) formed in the peeling mold 100, and an end of the connection member (not shown) is fixed member (not shown). C) and screwed together. That is, the laminate structure including the ceramic porous body 200, the nonwoven fabric 300, and the steel plate 400 is integrated with each other through a connecting member (not shown) and a fixing member (not shown) formed in the release mold 100. It is fixed to the peeling mold 100.

5 is a view showing the configuration of a steel plate included in a laminated structure for peeling and transporting a ceramic green sheet according to another embodiment of the present invention.

Referring to FIG. 5, the second region 420 of the steel plate 400 included in the present laminate structure includes a second-first region 421 and / or a second-second region 422.

The second-first region 421 extends from one side (first side portion) of the first region 410. The width of the second-first region 421 is shorter than the width of the first region 410. The 2-1 region 421 is formed in the same shape on the other side of the first region 410 that is symmetrical with the one side.

The second-second region 422 extends from the other side surface (second side portion) perpendicular to the one side surface (the surface contacting the second-first region 421) of the first region 410. The width of the second-second area 422 is formed to have a width longer than the width of the first area 410. The second-second region 422 is formed in the same shape on the side surface of the first region 410 that is symmetric to the other side (the region indicated by 422 at the top of the figure). .

Further, in the second region 420, a sealed region 460 is formed at the boundary between the 2-1 region 421 and the 2-2 region 422. Through holes are not formed in the sealed area 460, and thus air cannot flow therethrough. Through the sealed region 460, the steel plate 400 is adsorbed to the nonwoven fabric 300 with stronger adsorption force, and the air flows between the second-first region 421 and the second-second region 422. By blocking, the air sucked through the through holes in the first region 410 and the second region 420 in addition to the third region 430 is more effectively blocked from flowing out of the present laminate structure.

In addition, the groove 450 is formed at the vertex portion where the edges of the third region 430 of the steel plate 400 included in the present laminate structure meet. Since the through-hole is not formed in the third region 430, the suction force transmitted from the nonwoven fabric 300 does not act through the third region 430, but the suction force from the nonwoven fabric 300 passes through the groove 450. Transferred to the ceramic green sheet. The suction force is generated through a plurality of grooves 450 formed at four vertex portions of the steel plate 400 so that the edge portion of the ceramic green sheet is fixed to the present laminate structure without fluttering during peeling and conveying. That is, the air flowing out between the steel plate 400 and the nonwoven fabric 300 is blocked through the third region 430 in which the through hole is not formed, and a plurality of the plurality of regions formed in the third region 430 are blocked. By fixing the edge portion of the ceramic green sheet that is peeled and transferred through the groove 45 to the present laminate structure, damage to the ceramic green sheet and folding problems during lamination are effectively prevented.

Manufacturing method of laminated structure for peeling and conveying ceramic green sheet

Referring to FIG. 6, a method of manufacturing a laminated structure for peeling and transferring a ceramic green sheet according to an embodiment of the present invention will be described below.

6 is a view showing a method of manufacturing a laminated structure for peeling and transporting a ceramic green sheet according to an embodiment of the present invention.

Referring to FIG. 6, in the method of manufacturing the laminate structure, (A) generating a ceramic porous body 200 in which a plurality of pores are irregularly formed therein, (B) fibers arranged in a non-uniform direction Generating an interwoven nonwoven fabric 300, (C) generating a steel plate 400 having a plurality of through holes regularly formed and having a flat upper and lower surface, and / or (D) an upper surface of the steel plate 400 Laminating the nonwoven fabric 300, and laminating the ceramic porous body 200 on the upper surface of the nonwoven fabric 300.

In the step (A), the present invention uses the senosphere which is a by-product generated after the coal combustion in the coal-fired power plant to manufacture the ceramic porous body (200). Step (A) is a step of mixing with the water starting from the senspeare and clay (ball clay), molding the mixture mixed in the mixing step, drying the molding formed in the molding step at 90 to 99 ℃ , Firing the dried product dried in the drying step at 1,250 ° C. and cooling the baked product fired in the firing step to room temperature. Here, Xenosphere is a part of fly ash generated after coal combustion in a coal-fired power plant. The chemical composition is similar to coal ash because it is a spherical glass with a thin wall and can be recovered in a fly ash treatment plant. Cenosphere is generated in less than about 1% of the total fly ash generated, the amount that can be actually collected and commercialized is very limited and spherical form is very light and has a variety of characteristics such as insulation, insulation, soundproofing is used for various purposes. Ball clay, on the other hand, is chemically similar to kaolin after firing, but its color is pale yellow brown to dark gray because it contains organic substances before firing. Volley clay is produced by weathering granite rocks like kaolin formation process, but is deposited in swamps and is made of finer particles than kaolin by organic acid and gas mixture caused by plant decay.

Specifically, in the present invention, in order to manufacture the ceramic porous body 200, the cenosphere, ball clay and water are put into a mixer at a predetermined ratio and mixed for 20 minutes. Molded mixture is placed in a 200 × 200 × 100 mm mold and mixed with a well mixed mixture according to the ratio of senspeare, ball clay and water. The molding is then dried at 90-99 ° C. for 5-10 hours. The dried molding is baked at 1,250 ° C. for 30 to 60 minutes. The calcined calcined product is gradually cooled over 3 to 4 hours to manufacture the ceramic porous body 200. At this time, the ceramic porous body 200 is made of a clay 5 to 200 weight ratio with respect to the weight ratio of 100 xenosphere. When the ball clay content is less than 5 weight ratio with respect to the 100 weight ratio of senose spheres, the porous body is not well formed and there is a problem in that the bonding strength is weak. There is a problem that the area of the pores is small inside. At this time, if the porosity of the manufactured ceramic porous body 200 is less than 40%, there is a problem that the air permeability is lowered and the specific gravity is increased, and when the porosity exceeds 70%, the strength is weakened and thus easily broken. Therefore, according to the present invention, the porosity of the ceramic porous body 200 is maintained at 40 to 70%.

Experiments were carried out to determine the characteristics of the ceramic porous body 200 according to the mixing ratio of the senosphere and the ball clay, which is the starting material of the ceramic porous body 200. In order to manufacture a ceramic porous body having fine pores and a small specific gravity, porous ceramics were manufactured using a ball clay mixed weight ratio to a senspeare weight ratio under a firing temperature of 1,250 ° C. and a baking time of 30 minutes. The results are as follows. The average pore size of the prepared ceramic porous body can be seen that a number of pores well developed around 2.5 × 10-5 m. The porosity of the ceramic porous body was reduced to 58.4, 56.7, and 47%, respectively, when the porosity was 67.1% when the ball clay was added at 5% by weight compared to 100% by weight of cenosphere. The apparent specific gravity of the ceramic porous body increased more than twice the weight of ball clay to 1.04 nm when the ball clay input amount was 100 weight ratio to 100 weight ratio of cenosphere. On the other hand, the absorption rate decreased as the amount of ball clay input compared to the 100 weight ratio of cenosphere was reduced, and the absorption rate was 20.8% when the ball clay input amount was 100 weight ratio compared to the 100 weight ratio of cenosphere. The compressive strength of the ceramic porous body increased as the amount of ball clay input to the weight ratio of cenosphere increased, and when the ball clay input amount to 100 weight ratio of the centenosphere 100 weight ratio, the compressive strength was 30 (MPa) and about 5% of the ball clay 5 (17 MPa). Improved to over 76%.

In step (B), the nonwoven fabric 300 may correspond to a melt blown nonwoven fabric. In the melt blow method, when the molten resin is discharged into the fibrous form from the spinning nozzle, compressed gas (for example, air) is brought into contact with the discharged fibrous molten resin from both sides, and the fiber diameter can be reduced by accompanying the gas. have. Thus, the melt blow method is preferable because the nonwoven fabric made of ultrafine fibers having an average fiber diameter of 0.90 µm or less can be easily obtained. In the step (B), the present invention sets the resin discharge amount per spinning nozzle to 0.01 g / min or less in the melt blow method, and the melt flow rate (MFR) at the die temperature is 500 g / 10 min or more and 1000 g / 10 min or less. The die temperature is set so that the die temperature ratio is set so that the die temperature ratio melt flow rate (MFR) ratio is 20% or more and 80% or less with respect to the resin using the temperature of the air blown at the nozzle outlet. The blowing amount per unit area of is characterized in that 50Nm 3 / sec / m 2 or more and 70Nm 3 / sec / m 2 or less. For example, in order to obtain the nonwoven fabric which consists of ultrafine fibers whose average fiber diameter is 0.90 micrometer or less, it is necessary to make resin discharge amount per spinning nozzle into 0.01 g / min or less. If the amount of resin discharged is reduced, the diameter of the molten polymer immediately after the discharge can be reduced, while scattering fibers may be bundled depending on the amount of blown air per unit area of the blowing air at the nozzle outlet, or the polymer immediately after the discharge is cut off before the fiber. It is easy to fall short. Therefore, in the present invention, one of the features is that the blowing amount per unit area of the blowing air is set to 50Nm 3 / sec / m 2 or more and 70Nm 3 / sec / m 2 or less. When the discharge amount of resin per spinning nozzle is 0.01 g / min or less, by setting the blowing amount per unit area of the air to a predetermined range, fluff and shortening due to scattering fibers can be prevented, and a good nonwoven fabric can be obtained. The blowing amount per unit area of the blowing air is preferably 55Nm 3 / sec / m 2 or more and 67Nm 3 / sec / m 2 or less.

Furthermore, in step (B), it is preferable to use raw material resin whose MFR which shows the physical-property value of resin exists in the range of 10g / 10min or more and 2000g / 10min or less. In MFR which shows the physical-property value of resin, the measurement temperature is prescribed | regulated according to the kind of resin, For example, in polypropylene, the measurement temperature is 230 degreeC. Since die temperature is generally set to the temperature near the measurement temperature of MFR which shows the physical property value of resin, in order to manufacture a predetermined | prescribed nonwoven fabric, it is preferable to set it as an index of resin selection to have MFR within a predetermined range. The die temperature is set so that the melt flow rate in the die temperature of the apparatus for producing a melt blown nonwoven fabric is 500 g / 10 min or more and 1000 g / 10 min or less with respect to the resin used in this step. It is set as the temperature at which die temperature ratio MFR rate becomes 20% or more and 80% or less with respect to resin using temperature. For example, when the melt flow rate at the set temperature of the die in a certain resin is 500 g / 10 minutes, the temperature at which the die temperature ratio MFR rate becomes 80% is the temperature at which the melt flow rate of the resin becomes 400 g / 10 minutes. to be. When the temperature is set to the temperature of the air blowing at the nozzle outlet, the die temperature ratio MFR rate at this time is 80%. As for the temperature of the air blown in a nozzle exit, it is more preferable to set it as temperature which die temperature ratio MFR rate becomes 35% or more and 55% or less. The surface of the resin (melt polymer) discharged from the nozzle is cooled by setting the temperature of the air blown at the nozzle outlet to a temperature at which the die temperature ratio MFR ratio is 20% or more and 80% or less, preferably 35% or more and 55% or less. In the process of cooling and solidifying the molten polymer to form a fibrous form, the straightness of the discharged polymer is increased to be in a state in which it is difficult to be affected by the disturbance of the airflow. In this state, if air is blown at the blowing amount per unit area in the predetermined range, the stretching of the molten polymer (miniaturization of the fiber diameter) is suitably performed, but the fusion of fibers discharged from adjacent nozzles can be prevented. Therefore, in the nonwoven fabric obtained, it can suppress that largest fiber diameter becomes large, making average fiber diameter small. By adopting such a method, it is possible to obtain a nonwoven fabric having an average fiber diameter of 0.90 µm or less and a ratio of the number of fibers having a fiber diameter of 1.00 µm or more of 5.0% or less.

In the step (C), the present invention forms a plurality of through holes in the upper and lower flat steel thin film to manufacture a steel plate 400. Step (C) may include step (C-1) and / or step (C-2).

In the step (C-1), the present invention forms a plurality of through holes in the first region 410 existing in the center of the steel thin film (steel plate 400). In addition, a plurality of through holes are formed in the second region 420 extending from the side portion of the first region 410 to the inner portion of the third region 430 existing in the outer portion of the steel thin film (steel plate 400). do. In this case, the present invention forms a plurality of through holes in the second region 420 so as to have a larger number per unit area than the number of through holes formed in the first region 410. That is, for the same area, a larger number of through holes is formed in the second region 420 than in the first region 410. In other words, the through-hole is formed in the second region 420 more densely than the first region 410. On the other hand, the through hole is not formed in the third region 430 which extends from the edge of the second region 420 to the edge of the steel thin film (steel plate 400). That is, the third region 430 is in the form of a thin film of steel without a through hole.

As a result, a greater suction force is generated in the second region 420 than in the first region 410, thereby adsorbing the edge portion of the ceramic green sheet that is in contact with the second region 420 with a greater force. That is, by adsorbing the edge of the ceramic green sheet more strongly than the inside, the ceramic green sheet can be peeled and lifted more stably, thereby solving the problem that the ceramic green sheet is not torn or partially peeled off during the peeling and lifting. do.

In the step (C-2), the present invention includes a second-first region 421 extending from the first side portion of the first region 410 and a second-side portion extending from the second side portion perpendicular to the first side portion. The enclosed area 460 is formed at the boundary between the two areas 422. That is, in the present invention, the second-first region 421 is formed to have a width shorter than the length of the first side portion of the first region 410, and the width longer than the length of the second side portion of the first region 410 is formed. The second-2 region 422 is formed to have. In this case, the height of the second-first region 421 may be formed to be equal to a value obtained by subtracting the length of the second side surface portion twice from the width of the second-second region 422. In this case, since the 2-1 region 421 and / or the 2-2 region 422 are included in the second region 420, the through holes are denser than the through holes formed in the first region 410. The second-first region 421 and / or the second-second region 422 are distinguished from the first region 410 by forming a. In the present invention, the first region 410 and the second region are not formed by forming a through hole in the boundary between the 2-1 region 421 and the 2-2 region 422 in the second region 420. An encapsulation area 460 is formed that is distinct from the −1 area 421 and / or the second-2 area 422. Through holes are not formed in the sealed area 460, and thus air cannot flow therethrough. Through the sealed region 460, the steel plate 400 is adsorbed to the nonwoven fabric 300 with stronger adsorption force, and the air flows between the second-first region 421 and the second-second region 422. By blocking, the air sucked through the through holes in the first region 410 and the second region 420 in addition to the third region 430 is more effectively blocked from flowing out of the present laminate structure.

In the step (D), the present invention laminates the nonwoven fabric 300 on the upper surface of the steel plate 400, and forms the present laminated structure by laminating the ceramic porous body 200 on the upper surface of the nonwoven fabric 300.

The method of manufacturing the laminate structure may further include forming an adhesive layer 310 by applying an adhesive to the upper surface of the (B-1) nonwoven fabric 300 after step (B). That is, according to the present invention, the upper surface of the prepared nonwoven fabric 300 is coated with an adhesive to form an adhesive layer 310, and the ceramic porous body 200 is laminated on the upper surface of the nonwoven fabric 300 on which the adhesive layer 310 is formed. do. As a result, the nonwoven fabric 300 and the ceramic porous body 200 are adhered to each other through the adhesive layer 310. At this time, since the adhesive layer 310 is more strongly bonded to the nonwoven fabric 300 than the ceramic porous body 200, even when the nonwoven fabric 300 is separated from the ceramic porous body 200, a part of the adhesive layer 310 is formed of the ceramic porous body 200. Does not transition to).

In the method of manufacturing the laminate structure, after the steps (C), (C-1) and / or (C-2), a plurality of first connection holes are formed in the (C-3) ceramic porous body 200 and The method may further include forming a plurality of second connection holes in the nonwoven fabric 300 and forming a plurality of third connection holes in the steel plate 400.

In the step (C-3), the present invention forms a plurality of connection holes 440 (third connection holes) at the vertex portion where the corners of the third region 430 of the steel thin film (steel plate 400) meet. In addition, in the nonwoven fabric 300 and / or the ceramic porous body 200 stacked on the upper surface of the steel plate 400, a connection hole is formed in a portion of the steel plate 400 that is in contact with the connection hole 440. The connection hole formed in the ceramic porous body 200 is called a first connection hole, and the connection hole formed in the nonwoven fabric 300 is called a second connection hole.

In the method of manufacturing the laminated structure, after the step (D), (E) the connection member formed in the release mold 100 may include the plurality of first connection holes, the plurality of second connection holes, and the plurality of third connection holes. Peeling mold 100 located in the upper portion of the ceramic porous body 200, the nonwoven fabric 300 and the steel plate 400, the laminated ceramic porous body 200 by passing through in order to couple the end of the connection member with the fixing member Fixing to may further include.

Through step (E), the first connection hole, the second connection hole, and the third connection hole 440 are simultaneously penetrated by a connection member (not shown) formed in the peeling die 100 and the connection member (not shown) The end is coupled to the fixing member (not shown) by screwing or the like. That is, the laminate structure including the ceramic porous body 200, the nonwoven fabric 300, and the steel plate 400 is integrated with each other through a connecting member (not shown) and a fixing member (not shown) formed in the release mold 100. It is fixed to the peeling mold 100.

In the method of manufacturing the laminate structure, a groove 450 may be formed at a vertex portion where the edges of the third region 430 of the steel thin film (steel plate 400) meet. Since the through-hole is not formed in the third region 430, the suction force transmitted from the nonwoven fabric 300 does not act through the third region 430, but the suction force from the nonwoven fabric 300 passes through the groove 450. Transferred to the ceramic green sheet. The suction force is generated through a plurality of grooves 450 formed at four vertex portions of the steel plate 400 so that the edge portion of the ceramic green sheet is fixed to the present laminate structure without fluttering during peeling and conveying. That is, the air flowing out between the steel plate 400 and the nonwoven fabric 300 is blocked through the third region 430 in which the through hole is not formed, and a plurality of the plurality of regions formed in the third region 430 are blocked. By fixing the edge portion of the ceramic green sheet that is peeled and transferred through the groove 45 to the present laminate structure, damage to the ceramic green sheet and folding problems during lamination are effectively prevented.

The protection scope of the present invention is not limited to the description and the expression of the embodiments explicitly described above. In addition, it is further noted that the scope of protection of the present invention may not be limited due to obvious changes or substitutions in the technical field to which the present invention pertains.

10: peeling table 11: carrier film 12: ceramic green sheet
13: vacuum hole 14: peeling mold 15: cutting tool
16: presser 17: hydraulic press 18: press member
19: shaft 20: air cylinder 460: sealing area
100: peeling mold 200: ceramic porous body 300: nonwoven fabric
400: steel plate 310: adhesive layer 410: first region
420: second region 430: third region 440: connection hole
421: 2-1 region 422: 2-2 region 450: groove
12a: exfoliated ceramic green sheet

Claims (5)

A ceramic porous body 200 connected to the lower surface of the peeling mold 100 receiving the suction force from the vacuum generator, and dispersing the suction force through a plurality of pores irregularly formed therein;
Non-woven fabric 300 is bonded to the lower surface of the ceramic porous body 200, the fibers arranged in a non-directional direction entangled is formed to disperse the suction force through the space between the fibers; And
Coupled to the lower surface of the nonwoven fabric 300, a plurality of through holes are formed regularly to uniformly distribute the suction force and to expand the contact area with the ceramic green sheet in contact with the lower surface having a flat upper and lower surface to strongly adsorb the ceramic green sheet. It includes a steel plate 400 to peel off,
An adhesive layer 310 made of an adhesive is formed on an upper surface of the nonwoven fabric 300 adhered to a lower surface of the ceramic porous body 200, and the adhesive constituting the adhesive layer 310 is formed with the fibers constituting the nonwoven fabric 300. By forming a new chemical bond through a chemical reaction, the adhesive layer 310 is more strongly bonded to the nonwoven fabric 300 than the ceramic porous body 200,
The steel plate 400 is formed by extending from an edge of the first region 410 where a plurality of through holes are formed, and a second region 420 and a second region where a plurality of through holes are formed. And a third region 430 extending from an edge of the 420 to an edge of the steel plate 400, wherein the third region 430 has a shape of a thin film without a through hole. Laminated structure for peeling and conveying ceramic green sheets. delete The method according to claim 1,
The laminated structure for peeling and transferring the ceramic green sheet, wherein the number of the through holes formed in the second area 420 is greater than the number of the through holes formed in the first area 410. The method according to claim 3,
A plurality of first connection holes are formed in the ceramic porous body 200, a plurality of second connection holes are formed in the nonwoven fabric 300, and a plurality of third connection holes are formed in the steel plate 400.
The ceramic porous body 200 and the nonwoven fabric are formed in the release mold 100 by a connecting member and a fixing member which simultaneously pass through the plurality of first connection holes, the plurality of second connection holes, and the plurality of third connection holes. 300 and the steel plate 400 is integrated to the laminated structure for peeling and transporting the ceramic green sheet, characterized in that fixed to the release mold (100). The method according to claim 3,
The second region 420 of the steel plate 400 is formed to extend from one side of the first region 410 but has a width smaller than that of the first region 410. And a second region 2-422 extending from the other side surface perpendicular to the one side of the first region 410 and having a width longer than that of the first region 410.
In the second region 420, a sealed region 460 exists at a boundary between the 2-1 region 421 and the 2-2 region 422 to remove and transfer the ceramic green sheet. Laminated structure.

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