WO2020162578A1 - 電子部品の製造方法 - Google Patents
電子部品の製造方法 Download PDFInfo
- Publication number
- WO2020162578A1 WO2020162578A1 PCT/JP2020/004693 JP2020004693W WO2020162578A1 WO 2020162578 A1 WO2020162578 A1 WO 2020162578A1 JP 2020004693 W JP2020004693 W JP 2020004693W WO 2020162578 A1 WO2020162578 A1 WO 2020162578A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- roller
- green sheet
- carrier film
- electronic component
- manufacturing
- Prior art date
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000010030 laminating Methods 0.000 claims description 40
- 238000009423 ventilation Methods 0.000 claims description 17
- 239000003985 ceramic capacitor Substances 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 abstract 1
- 238000004080 punching Methods 0.000 description 16
- 239000000919 ceramic Substances 0.000 description 12
- 238000005520 cutting process Methods 0.000 description 9
- 230000009477 glass transition Effects 0.000 description 7
- 230000037303 wrinkles Effects 0.000 description 7
- 239000000853 adhesive Substances 0.000 description 6
- 230000001070 adhesive effect Effects 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- 238000001816 cooling Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G13/00—Apparatus specially adapted for manufacturing capacitors; Processes specially adapted for manufacturing capacitors not provided for in groups H01G4/00 - H01G11/00
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/30—Stacked capacitors
Definitions
- the present invention relates to a method for manufacturing an electronic component, and more specifically, a step of preparing a long carrier film having a green sheet cut into a rectangular shape on its surface, and a step of peeling the green sheet from the carrier film.
- the present invention relates to a method for manufacturing an electronic component including:
- Patent Document 1 JP-A-8-162364.
- the method of manufacturing an electronic component disclosed in Patent Document 1 includes a step of preparing a long carrier film having a green sheet cut into a rectangular shape on its surface, and a step of peeling the green sheet from the carrier film. Equipped with.
- a method of manufacturing the electronic component disclosed in Patent Document 1 will be described with reference to FIGS.
- a long carrier film (carrier tape) 102 having a long green sheet 101 formed on its main surface is provided between a punching table 103 and a transport unit 104. Supply.
- the punching table 103 is formed with a vent hole (intake port) 103a for sucking the carrier film 102 and a heat source (electric heater) 103b for heating the punching table 103 itself.
- the transport unit 104 has a pair of cutting blades (rectangular blades) 104a on both sides. Further, the transport unit 104 has a vent hole (intake port) 104b formed on the bottom surface.
- the transport unit 104 is lowered toward the punching table 103.
- the long green sheet 101 is cut by the cutting blade 104a, and the rectangular green sheet 105 is formed on the carrier film 102.
- the punching table 103 is horizontally moved in a direction away from the transport unit 104 (leftward in FIG. 10C).
- the green sheet 105 sucked by the ventilation holes 104b and held on the bottom surface of the transport unit 104 is peeled from the carrier film 102.
- the punching table 103 is heated by the heat source 103b.
- the reason for heating the punching table 103 can be considered as to the reason for heating the punching table 103.
- the first reason is that the binder of the green sheet 105 is softened by the heat of the punching table 103 to facilitate cutting.
- the heated punching table 103 heats the carrier film 102 and the green sheet 105 to facilitate the peeling of the green sheet 105 from the carrier film 102. That is, the ease of peeling the green sheet 105 from the carrier film 102 changes depending on the temperature of the green sheet 105. Specifically, at room temperature (for example, 25° C.) to the glass transition point (Tg) of the green sheet 105, the higher the temperature of the green sheet 105, the more the green sheet 105 is separated from the carrier film 102. Is easy (however, room temperature ⁇ Tg).
- the punching table 103 is heated, the green sheet 105 is heated by the punching table 103, and the temperature of the green sheet 105 is brought close to the glass transition point (Tg). It is thought that this facilitates the peeling from the.
- the third reason is considered to be that the thermo-compression bonding of the green sheet 105 is favorably performed in the laminating step to be performed later. That is, the green sheets 105 are laminated in a later laminating step and thermocompression bonded to produce a laminated body. However, if the green sheet 105 is kept at room temperature, the green sheet 105 to be laminated may take heat from the already laminated laminate in the laminating step, and the thermocompression bonding may not be performed well. Therefore, in the method of Patent Document 1, it is considered that the green sheet 105 is heated (preheated) by the punching table 103 to improve the thermocompression bonding in the laminating step.
- Patent Document 1 The electronic component manufacturing method disclosed in Patent Document 1 has the following problems.
- the green sheet 105 peeled from the carrier film 102 and held on the bottom surface of the transport unit 104 has different temperatures depending on the part, and a partial temperature variation occurs. There was a problem that it occurred. That is, since the green sheet 105 is stopped on the punching table 103 for a certain period of time for cutting, the green sheet 105 is heated by the punching table 103 and the overall temperature rises substantially uniformly. However, in the subsequent peeling step shown in FIG. 10C, the front end side (the right side in FIG. 10C) of the green sheet 105 is earlier than the rear end side (the left side in FIG. 10C). It leaves the punching table 103. Then, the temperature gradually decreases from the tip side. As a result, the temperature of the green sheet 105 held on the bottom surface of the transport unit 104 is low on the front end side and high on the rear end side, and a partial temperature variation occurs.
- a partial variation in the adhesive force may occur in the thermocompression bonding in the laminating step which is a subsequent step. .. That is, in the thermocompression bonding in the laminating step, since the adhesive force changes depending on the temperature, the temperature is strictly controlled so as to keep the adhesive force between layers uniform.
- a partial temperature variation occurs in the green sheet 105 held on the bottom surface of the transport unit 104, a partial variation in the adhesive force occurs, which deteriorates the quality of the manufactured laminated body or the manufactured laminated body. There were cases where the body became defective.
- the carrier film 102 If the carrier film 102 is damaged, the carrier film 102 cannot be transported, which may make it impossible to manufacture electronic components.
- wrinkles when wrinkles are generated on the carrier film 102, wrinkles may also be generated on the green sheet 105 formed thereon. Then, by stacking the green sheets 105 in which wrinkles are generated and thermocompressing them to manufacture a laminated body, the quality of the manufactured laminated body may deteriorate or the manufactured laminated body may become a defective product. there were.
- the present invention has been made to solve the above-mentioned conventional problems, and as a means thereof, a method for manufacturing an electronic component according to an embodiment of the present invention is a green sheet cut into a rectangular shape on the surface.
- the carrier film after the green sheet is peeled is the first roller side.
- the temperature of the surface of the second roller is kept higher than room temperature and lower than 120° C. by being bent and drawn to be collected and heated by a heat source provided inside the second roller. I shall.
- the rectangular green sheet can be satisfactorily peeled from the carrier film.
- the peeled green sheet is less likely to have partial temperature variations and wrinkles are less likely to occur, so that a high-quality laminated sheet is obtained in the subsequent laminating step.
- the body can be made.
- FIGS. 3F and 3G are cross-sectional views showing the steps performed in the first embodiment, which are continuations of FIG. 2E.
- FIGS. 10A to 10C are cross-sectional views showing steps performed in the method of manufacturing an electronic component disclosed in Patent Document 1, respectively.
- a long carrier film 2 having a long green sheet 1 formed on one main surface is prepared.
- carrier film 2 prepare carrier film 2.
- the material of the carrier film 2 is arbitrary, for example, PET can be used. Further, the length, width, thickness and the like of the carrier film 2 are arbitrary, and desired ones can be used.
- dielectric ceramic powder, binder resin, solvent, etc. having a material and particle size according to the electronic component to be manufactured, and wet-mix these to prepare a ceramic slurry.
- the ceramic slurry is applied on the carrier film 2 in a sheet form using a die coater, a gravure coater, a micro gravure coater, etc., and dried.
- the thickness of the ceramic slurry to be applied is arbitrary and is appropriately set according to the desired thickness of the green sheet 1.
- the long carrier film 2 having the long green sheet 1 formed on one main surface is completed.
- a conductive paste is printed in a desired pattern on the main surface of the long green sheet 1 to form internal electrodes, if necessary.
- the long green sheet is formed. 1 is cut into a rectangular green sheet 4. Specifically, first, the transport of the carrier film 2 is stopped. Next, the previously prepared cutting blades 3a and 3b are lowered to cut the long green sheet 1 into rectangular green sheets 4 having desired dimensions. At this time, the cutting blades 3a and 3b cut only the green sheet 1 and do not cut the carrier film 2. As a result, the rectangular green sheet 4 is formed on the long carrier film 2.
- the carrier film 2 is intermittently conveyed, the cut rectangular green sheet 4 is sent out to the next step, and the long green sheet 1 of the elongated green sheet 1 is placed at the position where the cutting blades 3a and 3b are provided.
- the part to be cut is arranged. The cutting of the long green sheet 1 into the rectangular green sheets 4 and the intermittent conveyance of the carrier film 2 are sequentially repeated.
- the unused portion of the long green sheet 1 (rectangular green sheet 4
- the green sheet 4 may be left uncut), but the unused portion is not shown in the drawing.
- the carrier film 2 having the rectangular green sheet 4 formed thereon is conveyed between the first roller 5 and the second roller 6.
- the carrier film 2 is on the first roller 5 side and the green sheet 4 is on the second roller 6 side.
- the second roller 6 is a peeling roller for peeling and holding the green sheet 4.
- the second roller 6 is not only a peeling roller but also a stacking roller.
- the material of the first roller 5 is arbitrary, but for example, aluminum, carbon, SUS or the like can be used.
- the diameter of the first roller 5 is smaller than the diameter of the second roller 6.
- the diameter of the first roller 5 is arbitrary, but is, for example, about ⁇ 20 to ⁇ 100.
- the first roller 5 does not have a heat source.
- the first roller 5 may include a heat source and be kept at a constant temperature.
- the material of the second roller 6 is arbitrary, but for example, aluminum, carbon, SUS or the like can be used.
- the diameter of the second roller 6 is arbitrary, but is, for example, about ⁇ 200 to ⁇ 700.
- the ratio of the diameter of the first roller 5 to the diameter of the second roller is about 1:2 to 1:35.
- a plurality of ventilation holes 6a are formed in a region of about 1/3 of the outer circumference of the second roller 6.
- the ventilation holes 6a are connected to predetermined ventilation pipes provided on the second roller 6, respectively.
- the ventilation hole 6a is provided in a region corresponding to the length of the rectangular green sheet 4 and approximately 1/3 of the outer circumference of the second roller 6, but the region where the ventilation hole 6a is provided is provided.
- the ventilation hole 6a may be provided in approximately 1/2 of the outer circumference, or the ventilation hole 6a may be provided in the entire circumference of the outer circumference.
- FIG. 1C and the like show the vent holes 6 a provided along the outer circumference of the second roller 6, the vent holes 6 a are also provided in the width direction of the second roller 6. ..
- the second roller 6 has a multi-chamber suction roller structure, and the state of the vent hole 6a is changed to the suction state and the exhaust state for each area of the surface of the second roller 6 and for each elapse of time. It can be in any state such as a state (blow state) or an atmosphere open state. Further, the suction state and the exhaust state can be made stronger and weaker for each area of the surface of the second roller 6.
- the second roller 6 may have a suction function at a minimum, and may be a suction roller dedicated to suction instead of the multi-chamber suction roller.
- the green sheet 4 is sucked by the ventilation holes 6a in the suction-holdable area A1. It is held on the surface of the second roller 6.
- the suction-holdable area A1 is sandwiched between the first roller 5 and the second roller 6, so that the green sheet 4 formed on the carrier film 2 closes the ventilation hole 6a and the green sheet 4 is This is a region that is sucked by the ventilation holes 6a. After that, the green sheet 4 is continuously sucked by the ventilation holes 6 a and held on the surface of the second roller 6.
- the suction-holdable area A1 is an area in which the pressed green sheet 4 closes the vent hole 6a, the green sheet 4 is sucked by the vent hole 6a, and the green sheet 4 is held by the second roller 6. The larger the area, the more reliably the green sheet 4 can be sucked and held.
- the second roller 6 is provided with a heat source 6b for heating (preheating) the peeled green sheet 4.
- a heat source 6b for heating (preheating) the peeled green sheet 4.
- the type of the heat source 6b is arbitrary, for example, a resistance heating method such as a cartridge heater or a plate heater, an induction heating method, a dielectric heating method, a heat pump method using a heat medium, or the like can be used.
- the heat source 6b heats the green sheet 4 in order to prevent the newly laminated green sheet 4 from taking heat from the already laminated laminate in the later laminating step. is there. That is, in thermocompression bonding in the laminating step, strict control of temperature and pressure is performed in order to keep the adhesive force between layers uniform. For example, when the preset temperature of thermocompression bonding in the laminating step is 80° C., the already laminated laminate and the green sheet 4 newly laminated on the laminate are, for example, 80° C. ⁇ 3° C. It is managed so that it falls within the range of.
- the heat source 6b heats the green sheet 4 in order to bring the temperature of the newly laminated green sheet 4 to an appropriate temperature.
- the surface of the second roller 6 is preferably maintained at a predetermined temperature higher than room temperature and lower than 120° C. by the heat source 6b.
- the reason why the temperature is lower than 120° C. is to prevent the carrier film 2 from being damaged by heat.
- the surface of the second roller 6 is maintained at a predetermined temperature higher than 40° C. and lower than 100° C. by the heat source 6b.
- the reason why the temperature is higher than 40° C. is to effectively heat the green sheet 4.
- the reason why the temperature is lower than 100° C. is to surely avoid the breakage of the carrier film 2.
- room temperature refers to the temperature of the space where electronic components are manufactured, and the standard is approximately 25°C.
- the rectangular green sheet 4 is peeled from the carrier film 2 by rotating the second roller 6 and held on the surface of the second roller 6.
- the carrier film 2 is bent toward the first roller 5 and pulled to be collected. Bending the carrier film 2 to the first roller 5 side means that the carrier film is pulled with the tangent line L1 of the second roller 6 that passes through the point where the green sheet 4 and the carrier film 2 are separated by peeling the green sheet 4.
- the peeling angle SA which is an angle formed between the peeling direction and the vertical direction, is larger than 0°.
- the tangent line L1 is exactly the tangent line after the green sheet 4 is interposed on the surface of the second roller 6.
- the peeling angle SA is set to approximately 45°.
- the degree of peeling changes depending on the size of the peeling angle SA. That is, the larger the peeling angle SA is, the easier the peeling is, and the smaller the peeling angle SA is, the more difficult the peeling is. As shown in FIG. 4, peeling is easier when the peeling angle SA is 45° than when the peeling angle is 10°.
- the size of the peeling angle SA is preferably adjusted as needed.
- the second roller 6 is provided with the heat source 6b, and the green sheet 4 is heated. Therefore, for example, when the temperature of the green sheet 4 in contact with the second roller 6 rises sharply and exceeds the glass transition point (Tg) and the green sheet 4 becomes difficult to peel from the carrier film 2, the peeling is performed. It is preferable to adjust the angle SA to be large so that the peeling is easy.
- the holding angle HA of the first roller 5 with respect to the carrier film 2 also affects the degree of difficulty of peeling the green sheet 4 from the carrier film 2.
- the holding angle HA is an angle formed by a region in contact with the carrier film 2 on the outer periphery of the first roller 5 when viewed around the axis of the first roller 5.
- peeling is easier when the holding angle HA is 180° than when the holding angle HA is 40°.
- the holding angle HA of the first roller 5 with respect to the carrier film 2 is preferably 30° or more and 180° or less. This is because if the holding angle HA is smaller than 30°, it becomes difficult to peel the green sheet 4 from the carrier film 2. This is because if the hugging angle HA exceeds 180°, it becomes difficult to convey the carrier film 2.
- the second green roller 4 is further rotated to completely peel the rectangular green sheet 4 from the carrier film 2 and hold it on the surface of the second roller 6. ..
- the step of laminating the rectangular green sheets 4 held on the surface of the second roller 6 is performed.
- the second roller 6 also serves as the laminating roller.
- the stacking process of the green sheets 4 is performed on the stacking stage 7 in which the heat source 7a is provided.
- a laminated stage 7 on which a laminated body 8 in the process of being manufactured is mounted is prepared.
- the tip of the green sheet 4 held by the second roller 6 and the tip of the green sheet 4 already laminated on the uppermost layer of the laminated body 8 are aligned.
- the vent hole 6a of the second roller 6 is in a suction state, and the green sheet 4 is sucked and held by the surface of the second roller 6.
- the laminated body 8 which is being manufactured is mounted on the laminated stage 7.
- the laminated body 8 is not formed on the laminated stage 7. It doesn't exist.
- the second roller 6 is rotated in a state where the second roller 6 is pressed in the direction of the laminating stage 7, and the laminating stage 7 is rotated in synchronization with the rotation.
- Direction (rightward in FIG. 3(G)).
- the second roller 6 has a multi-chamber suction roller structure, and the state of the vent hole 6a is changed to a suction state, an exhaust state (blow state), and an atmospheric release state for each region and for each elapsed time. You can switch to any of the states.
- this function is used, and when the ventilation hole 6a passes through the lowermost portion of the second roller 6 as the second roller 6 rotates, the ventilation state is sequentially changed from the suction state to the exhaust state (or the atmosphere open state). Switch. That is, the vent hole 6a in the area A2 is in the suction state, and the vent hole 6a in the area A3 is in the exhaust state (or open to the atmosphere).
- the green sheet 4 held by the second roller 6 is laminated on the uppermost layer of the laminated body 8 on the laminating stage 7 and is thermocompression bonded.
- the laminated body 8 on the laminating stage 7 is heated to the set temperature for thermocompression bonding by the heat source 7a.
- the newly laminated green sheet 4 is heated by the heat source 6b of the second roller 6 to the set temperature for thermocompression bonding.
- the green sheet 4 is satisfactorily thermocompression-bonded to the uppermost layer of the laminated body 8 with a target adhesive force.
- the second roller 6 which is a peeling roller also serves as a laminating roller, but the second roller 6 which is a peeling roller and the laminating roller are separately held by the second roller 6.
- the green sheet 4 may be delivered to the laminating roller, the green sheet 4 may be laminated using the laminating roller, and the thermocompression bonding may be performed.
- the laminated body 8 is divided into a plurality of individual unfired ceramic bodies.
- the unfired ceramic body is fired with a predetermined profile to produce a ceramic body.
- the conductive paste provided between the layers of the green sheet 4 is also fired to form internal electrodes between the layers of the ceramic body.
- the rectangular green sheet 4 can be favorably peeled from the carrier film 2.
- the green sheet 4 since the respective parts of the green sheet 4 are in contact with (holding) the heated second roller 6 for the same time, the green sheet 4 is partially covered. The temperature variation does not occur, the green sheet 4 is satisfactorily thermocompression-bonded in the laminating step, and the quality of the laminated body 8 does not deteriorate.
- the time period during which the carrier film 2 is in contact with the heated second roller 6 is extremely short, and the carrier film 2 is indirectly contacted with the green sheet 4 interposed therebetween. Therefore, the carrier film 2 is not damaged by heat, and the production of electronic components is not disabled.
- the time period during which the carrier film 2 is in contact with the heated second roller 6 is extremely short, and the carrier film 2 is indirectly contacted with the green sheet 4 interposed therebetween. Therefore, wrinkles do not occur on the carrier film 2, and wrinkles do not occur on the green sheet 4 due to the influence thereof, so that the quality of the laminated body 8 produced in the laminating step does not deteriorate.
- the peeling process of the first embodiment is modified. Specifically, in the first embodiment, the first roller 5 made of aluminum was used in the peeling process. In the second embodiment, instead of this, as shown in FIG. 5, a first roller 25 having a rubber surface is used.
- the other configurations of the second embodiment are the same as those of the first embodiment.
- the first roller 5 comes into contact with the second roller 6 in a slightly deformed state with elasticity through the carrier film 2 on which the green sheet 4 is formed. Therefore, in the second embodiment, the area of the suction-holdable region A21 is larger than the area of the suction-holdable region A1 of the first embodiment. Therefore, in the second embodiment, the green sheet 4 can be peeled and held by the second roller 6 more reliably than in the first embodiment.
- a configuration is added to the peeling process of the first embodiment.
- two rollers that is, the first roller 5 and the second roller 6 are used, but in the third embodiment, one roller is added to the third roller 37.
- the third roller 37 is provided behind the first roller 5 in the conveying path of the carrier film 2, and the carrier film 2 on which the green sheet 4 is formed is the same as the first roller 5 and the first roller 5. It is conveyed between the second roller 6 and between the third roller 37 and the second roller 6.
- the carrier film 2 after the green sheet 4 is peeled off is bent and pulled toward the first roller 5 and the third roller 37, and is collected.
- the other configurations of the third embodiment are the same as those of the first embodiment.
- the area of the suction holdable area A31 is larger than that of the suction holdable area A1 of the first embodiment and the suction holdable area A21 of the second embodiment. Is very large. Therefore, in the third embodiment, the green sheet 4 can be peeled off and held by the second roller 6 more reliably than in the first and second embodiments.
- the third roller 37 used in the third embodiment is replaced with the knife edge 48.
- the knife edge 48 is a metal member having an acute edge that can change the transport direction of the carrier film 2.
- the other configurations of the fourth embodiment are the same as those of the third embodiment.
- the area of the suction-holdable area A41 is very large. Therefore, also in the fourth embodiment, the green sheet 4 can be peeled off and held by the second roller 6 more reliably than in the first and second embodiments.
- the third roller 37 used in the third embodiment is replaced with the third roller 57 having a cooling function.
- Other configurations of the fifth embodiment are the same as those of the third embodiment.
- the third roller 57 can lower the temperatures of the carrier film 2 and the green sheet 4 by the cooling function. That is, as described above, when the temperature of the green sheet 4 is equal to or higher than the glass transition point (Tg), the higher the temperature of the green sheet 4, the more difficult the green sheet 4 is to be peeled from the carrier film 2.
- the green sheet 4 held on the surface of the second roller 6 is heated by the heat source 6b in order to favorably perform the thermocompression bonding in the laminating step to be performed later.
- the green sheet 4 held on the surface of the second roller 6 is usually at a temperature higher than the glass transition point (Tg).
- the temperature of the green sheet 4 is temporarily increased by providing a cooling function to the third roller 57 arranged near the point where the green sheet 4 and the carrier film 2 are separated.
- the green sheet 4 was partially lowered to approach the glass transition point (Tg) so that the green sheet 4 was easily peeled from the carrier film 2.
- the third roller 57 since the third roller 57 has a cooling function and can lower the temperature of the green sheet 4, the green sheet 4 can be easily peeled from the carrier film 2.
- a laminated ceramic capacitor was manufactured as an electronic component, but the type of electronic component to be manufactured is arbitrary, and other types of electronic components such as a laminated ceramic thermistor, a laminated ceramic inductor, a laminated ceramic composite component, etc. May be
- the second roller 6 which is a peeling roller also serves as a laminating roller, but the second roller 6 which is a peeling roller and the laminating roller are separately held by the second roller 6.
- the green sheet 4 may be delivered to the laminating roller, the green sheet 4 may be laminated using the laminating roller, and the thermocompression bonding may be performed.
- a relay roller used for delivering the green sheet 4 may be provided between the second roller 6 which is a peeling roller and the dedicated laminating roller.
- the temperature of the surface of the second roller is maintained higher than 40° C. and lower than 100° C. by being heated by the heat source provided inside the second roller. You may do it.
- the reason why the temperature is higher than 40° C. is to effectively heat the green sheet.
- the reason why the temperature is lower than 100° C. is to prevent the carrier film from being damaged.
- the first roller may be a rubber roller whose surface is made of rubber.
- the first roller comes into contact with the second roller in a slightly deformed state with elasticity through the carrier film on which the green sheet is formed. Therefore, the area of the suction-holdable area becomes large, and the green sheet can be more reliably peeled off and held by the second roller.
- a third roller is provided behind the first roller, and the carrier film on which the green sheet is formed is provided between the first roller and the second roller and between the third roller and the third roller. You may make it convey between a 2nd roller. In this case, since the area of the suction-holdable area becomes very large, it becomes possible to more reliably peel and hold the green sheet by the second roller.
- the third roller may be cooled and the carrier film and the green sheet may be cooled by the third roller.
- the temperature of the green sheet heated by the heat source of the second roller can be lowered, the green sheet can be easily peeled from the carrier film.
- a knife edge is provided behind the first roller, and the carrier film on which the green sheet is formed is provided between the first roller and the second roller and between the knife edge and the second roller. You may make it convey between a roller. Also in this case, since the area of the suction-holdable region becomes very large, it becomes possible to more reliably peel and hold the green sheet by the second roller.
- a laminating process for laminating green sheets may be provided.
- This laminating step can be performed using, for example, the second roller.
- this laminating step can be carried out using a dedicated laminating roller.
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- Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
Abstract
Description
図1(A)~図3(G)を参照しながら、第1実施形態にかかる電子部品の製造方法について説明する。なお、製造する電子部品の種類は任意であるが、本実施形態においては、一例として積層セラミックコンデンサを製造する。
第1実施形態の構成の一部に変更を加えて、第2実施形態にかかる電子部品の製造方法を実施した。図6を参照して説明する。
第1実施形態に構成を追加して、第3実施形態にかかる電子部品の製造方法を実施した。図7を参照して説明する。
第3実施形態の構成の一部に変更を加えて、第4実施形態にかかる電子部品の製造方法を実施した。図8を参照して説明する。
第3実施形態の構成の一部に変更を加えて、第5実施形態にかかる電子部品の製造方法を実施した。図9を参照して説明する。
2・・・キャリアフィルム
3a、3b・・・カット刃
4・・・矩形状のグリーンシート
5、25・・・第1ローラ
6・・・第2ローラ
6a・・・通気孔
6b・・・熱源
37、57・・・第3ローラ
48・・・ナイフエッジ
A1、A21、A31、A41、A51・・・吸引保持可能領域
A2・・・通気孔6aが吸引状態にある領域
A3・・・通気孔6aが排気状態(又は大気開放状態)にある領域
L1・・・第2ローラ6の接線
SA・・・剥離角度
HA・・・抱き角度
Claims (10)
- 電子部品の製造方法であって、
矩形状に切断されたグリーンシートが表面に形成された長尺状のキャリアフィルムを準備する準備工程と、
前記グリーンシートが形成された前記キャリアフィルムを、第1ローラと、表面に通気孔が形成された第2ローラとの間に搬送させ、前記グリーンシートを、前記通気孔によって吸引して前記キャリアフィルムから剥離し、前記第2ローラの表面に保持する剥離工程と、を備え、
前記剥離工程において、
前記グリーンシートが剥離された後の前記キャリアフィルムは、前記第1ローラ側に曲げて牽引されて回収され、
前記第2ローラの表面の温度は、前記第2ローラの内部に設けられた熱源によって加熱されることによって、室温よりも高く、かつ、120℃よりも低く維持される、電子部品の製造方法。 - 前記第2ローラの表面の温度が、前記第2ローラの内部に設けられた熱源によって加熱されることによって、40℃よりも高く、かつ、100℃よりも低く維持される、請求項1に記載された電子部品の製造方法。
- 前記第1ローラが、表面がゴムによって作製されたゴムローラーである、請求項1または2に記載された電子部品の製造方法。
- 前記キャリアフィルムの搬送路において、前記第1ローラよりも後ろに第3ローラが設けられ、
前記グリーンシートが形成された前記キャリアフィルムを、前記第1ローラと前記第2ローラとの間、および、前記第3ローラと前記第2ローラとの間に搬送させる、請求項1ないし3のいずれか1項に記載された電子部品の製造方法。 - 前記第3ローラが冷却され、前記第3ローラによって前記キャリアフィルムおよび前記グリーンシートが冷却される、請求項4に記載された電子部品の製造方法。
- 前記キャリアフィルムの搬送路において、前記第1ローラよりも後ろにナイフエッジが設けられ、
前記グリーンシートが形成された前記キャリアフィルムを、前記第1ローラと前記第2ローラとの間、および、前記ナイフエッジと前記第2ローラとの間に搬送させる、請求項1ないし3のいずれか1項に記載された電子部品の製造方法。 - 前記剥離工程の後に、前記グリーンシートを積層する積層工程を備えた、請求項1ないし6のいずれか1項に記載された電子部品の製造方法。
- 前記積層工程が、前記第2ローラを使用して実施される、請求項7に記載された電子部品の製造方法。
- 前記積層工程が、専用の積層ローラを使用して実施される、請求項7に記載された電子部品の製造方法。
- 製造される電子部品が積層セラミックコンデンサである、請求項1ないし9のいずれか1項に記載された電子部品の製造方法。
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JPH07164418A (ja) * | 1993-12-15 | 1995-06-27 | Murata Mfg Co Ltd | セラミックグリーンシートの製造方法 |
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