KR101614750B1 - Apparatus for manufacturing ceramic laminate and method for manufacturing the same - Google Patents

Abstract

[PROBLEMS] To produce a ceramic laminated body which can be conveyed without a large load applied to the ceramic sheet when transferring the ceramic sheet from the film-forming supporting means to the lamination supporting means through the peeling transfer roll.
A film forming apparatus includes a film forming roll 12 having a surface on which a ceramic sheet S is formed and a peeling transfer roll 12 contacting the film forming roll 12 with the ceramic sheet S sandwiched therebetween, (14), a lamination roll (16) which is in contact with the peeling transfer roll with the ceramic sheet (S) sandwiched therebetween, peeling off the ceramic sheet from the peeling transfer roll, and laminating the ceramic sheet to obtain a ceramic laminate. The outer peripheral portion of the peeling transfer roll 14 is constituted by the elastic body 14b whose adhesion to the ceramic sheet is not larger than the film forming roll 12 and the elastic body 14b ) At a speed difference that can be absorbed by the shear deformation caused by the shear deformation.

Description

Technical Field [0001] The present invention relates to an apparatus for manufacturing a ceramic laminated body,

The present invention relates to an apparatus for manufacturing a ceramic laminated body used in a manufacturing process of a multilayer electronic component such as a multilayer ceramic capacitor and a manufacturing method thereof.

When a multilayer ceramic capacitor is manufactured, a ceramic green sheet is formed on a long carrier film as in Patent Document 1, an internal electrode is printed on the ceramic green sheet, the ceramic green sheet is cut into a desired size and is peeled off from the carrier film, A method of forming a laminated block by laminating a plurality of cut ceramic green sheets is common. There is provided a method for peeling a ceramic green sheet from a carrier film, comprising the steps of: adsorbing and retaining a lower surface of a carrier film supporting a ceramic green sheet by a suction hole on a surface of a plate; providing an adsorption head having a plurality of suction holes above a surface plate; The adsorption head is lifted in a state in which the top surface of the ceramic green sheet is adsorbed by the suction hole of the head to peel the ceramic green sheet from the carrier.

However, since the base plate and the adsorption head are in a flat plate shape, the peeling mode is face peeling. Since the suction holes of the suction heads are formed at predetermined intervals, the ceramic green sheets between the suction holes are not held. Therefore, when the ceramic green sheet is thin and has low strength, there is a possibility that the ceramic green sheet between the suction holes is broken during peeling of the ceramic green sheet from the carrier film on the surface.

FIG. 3 of Patent Document 2 discloses an apparatus for manufacturing an efficient ceramic laminate. In this manufacturing apparatus, a ceramic slurry is applied in a thin film form on a film-forming roll on which a release process has been performed by a film-forming apparatus, the ceramic slurry is dried by a drying apparatus, the ceramic sheet is transferred to a peeling transfer roll , And further, the ceramic sheet is transferred from the peeling transfer roll to the lamination roll to laminate the ceramic sheets on the lamination roll in multiple layers. In the laminated roll, electrodes are formed on the respective ceramic sheets by an electrode forming apparatus.

In the apparatus described in Patent Document 2, since the ceramic slurry can be formed by continuous operation, the stability of the film thickness is widened as compared with the intermittent film forming method, and the quality and mass productivity are improved. In addition, So that the manufacturing cost can be reduced. Further, as the ceramic sheet is laminated on the lamination roll, the diameter of the lamination roll is increased, but the position and pressure of the peeling transfer roll can be adjusted, thereby stabilizing the quality of the lamination. In addition, since the lamination roll does not directly contact the film formation roll, the problem that the pressing force of the lamination roll damages the film formation roll can be solved.

Japanese Patent Application Laid-Open No. 2002-254421 Japanese Patent Application Laid-Open No. 2011-258928

In Patent Document 2, in order to surely transfer the ceramic sheet from the film forming roll to the peeling transfer roll, the film forming roll is subjected to a releasing treatment, and the peeling transfer roll is provided with an adhering means or an adsorption means (suction or electrostatic adsorption).

However, when the peeling transfer roll is provided with an adhesive means, it is difficult to appropriately control the adhesive force. If the adhesive force is too strong, the ceramic sheet can not be transferred smoothly to the lamination roll. On the contrary, if the adhesive force is too low, It can not be smoothly peeled off.

On the other hand, when the suction means such as a suction roll is used as the peeling transfer roll, the control of the holding force is simple. However, since the surface of the ceramic sheet not supported by the carrier film is vacuum-sucked, Or a suction trace due to the suction hole may remain on the surface of the ceramic sheet, which may result in deterioration of the quality of the ceramic laminated body. Particularly, in the case of a low-strength ceramic sheet having a small film thickness, since the ceramic sheet is warped even with a slight load, it is difficult to adopt a suction means by vacuum suction.

It is therefore an object of the present invention to provide a ceramic laminate which can carry a ceramic sheet without transferring a large load to the ceramic sheet when transferring the ceramic sheet from the film deposition supporting means to the lamination supporting means through the peeling transfer roll, And an object of the present invention is to provide an apparatus and a method for manufacturing a ceramic laminated body.

In order to attain the above object, an apparatus for producing a ceramic laminated body according to the present invention comprises: a film-formation supporting means having a ceramic sheet formed on a surface thereof; a supporting member for supporting the ceramic sheet, And peeling off the ceramic sheet from the peeling transfer roll in contact with the peeling transfer roll with the ceramic sheet sandwiched therebetween and transferring the peeled transfer roll to the peeling transfer roll, Wherein at least an outer peripheral portion of the peeling transfer roll is made of an elastic body having an adhesion force to the ceramic sheet that is not greater than that of the film forming and supporting means, And the peeling transfer roll is brought into contact with the film- Is characterized in that given the speed difference can be absorbed by the shear deformation due to the magnetic material.

A method for producing a ceramic laminated body according to the present invention includes a film forming step of forming a ceramic sheet on the surface of a film forming and supporting means and a step of forming a ceramic film on the ceramic film by contacting the peeling transfer roll with the film- A peeling transfer step of transferring the ceramic sheet peeled off from the support means to the outer periphery of the peeling transfer roll; and a peeling transfer step of bringing the ceramic sheet into contact with the peeling transfer roll through the ceramic sheet, And a laminated body forming step of forming a ceramic laminated body by laminating the peeled ceramic sheet on the laminated support means, the method comprising the steps of: forming at least an outer peripheral portion of the peeling transfer roll on the ceramic sheet Is higher than that of the film-forming supporting means And a speed difference capable of being absorbed by shearing deformation by the elastic body is imparted to a contact position between the film forming and supporting means and the peeling transfer roll. Here, " shear deformation " is a deformation of the moving direction of the elastic body. When the elastic body is provided, for example, on the outer peripheral portion of the roll, it means that the tangential direction of the roll is deformed.

The ceramic sheet formed on the film-forming supporting means is conveyed to the contact position of the film-forming supporting means and the peeling transfer roll. The peripheral speed of the peeling transfer roll and the conveying speed of the ceramic sheet on the film forming and supporting means are shifted and at least the outer peripheral portion of the peeling transfer roll is made of an elastic body so that a shearing force is applied to the interface between the ceramic sheet and the film forming and supporting means, The sheet can be peeled off from the film forming and supporting means. The speed difference between the film forming and supporting means and the peeling transfer roll is a difference in degree that can be absorbed by the shearing deformation of the elastic body of the peeling transfer roll, so that the wrinkle and the breakage of the ceramic sheet do not occur.

When the ceramic sheet is peeled off again from the peeling transfer roll after it is transferred from the film forming and supporting means to the peeling transfer roll, the peeling transfer roll is cylindrical, so that the peeling mode is not peeling but delamination. Since the adhesive force of the elastic body itself is small since the adhesive force to the ceramic sheet is not greater than the adhesive force of the elastic sheet provided on the peripheral portion of the peeling transfer roll, the ceramic sheet can be easily transferred from the peeling transfer roll to the lamination support means. Since the ceramic sheet can be transferred from the film forming and supporting means to the lamination supporting means without being further loaded on the ceramic sheet by the peeling transfer roll, the ceramic sheet having low thickness and low strength And the molecular weight of the resin in the sheet is small). Therefore, a high-quality ceramic laminate can be obtained.

It is preferable that the elastic body provided on the outer peripheral portion of the peeling transfer roll has a surface of non-adhesive property and a surface roughness (Ra) smaller than the thickness of the ceramic sheet. When the elastic body has stickiness, it is difficult to transfer the ceramic sheet from the peeling transfer roll to the lamination support means. The non-tackiness is not only the case where the ceramic sheet has no tackiness at all, but it may have some tackiness. However, it is preferable that the tackiness is not greater than the tackiness of the film-forming and supporting means. Further, since the elastic body has a predetermined surface roughness (Ra), the ceramic sheet is deformed along the unevenness of the surface of the elastic body at the portion where the ceramic sheet on the film-forming supporting means and the peeling transfer roll come into contact with each other, And adhered to the peeling transfer roll in the same state. Therefore, even if the surface of the elastic body is non-tacky, the ceramic sheet can be reliably transferred from the film-form supporting means onto the peeling transfer roll. Further, since the concavity and convexity is smaller than the thickness of the ceramic sheet, the ceramic sheet is not deformed more than necessary, and the occurrence of deformation can be prevented.

The speed difference at the contact position between the film-forming supporting means and the peeling transfer roll which can be absorbed by the shear deformation of the elastic body changes depending on the thickness, elastic modulus, and surface roughness of the elastic body. The upper and lower limits of the speed difference can be determined as follows. When the speed of the peeling transfer roll is faster than that of the film formation supporting means, the upper limit of the speed difference can be determined by whether or not the sheet is broken. Specifically, the shearing force applied to the surface of the elastic body of the peeling transfer roll generated by the speed difference may be set so as not to become larger than the force (physical property value) required to break the sheet. When the speed of the transfer roll is slower than that of the film formation supporting means, the upper limit of the speed can be determined depending on whether or not a large amount of wrinkles or sagging occurs on the sheet on the release transfer roll. If the speed of the peeling transfer roll is slower than that of the film forming and supporting means, the sheet is excessively supplied to the peeling transfer roll, so that the place on the peeling transfer roll is lost and wrinkles or sagging occurs on the peeling transfer roll. Such wrinkles or sagging can be absorbed to some extent by the compression of the sheet in the shearing direction, but it is difficult to absorb the creases or sagging. Thus, for example, if the speed difference is set so that the compression ratio of the sheet is in the range of 1 to 3%, wrinkling or sagging of the sheet can be allowed. The lower limit of the speed difference can be determined by whether or not the sheet can be peeled normally from the film-forming and supporting means. Specifically, the sheet can be peeled off by setting the shearing force applied to the surface of the elastic body of the peeling transfer roll to be larger than the peeling force (value when the peeling angle is 0 DEG) of the sheet on the film forming and supporting means.

As an example, the speed difference at the contact position between the film-forming supporting means and the peeling transfer roll may be set within a range of ± 1 to 3% with respect to the speed at the contact position of the film-forming and supporting means. If the thickness of the elastic body is increased, the amount of deformation of the elastic body at the contact position between the film forming and supporting means and the peeling transfer roll becomes large. On the other hand, And the surface of the elastic body increases, so that the adhesive force between the ceramic sheet and the peeling transfer roll becomes excessive. Therefore, there is a possibility that the ceramic sheet can not be transferred satisfactorily to the lamination support means. Therefore, in order to make the thickness of the elastic body to be an appropriate thickness, it is preferable to set the speed difference between the film-forming supporting means and the peeling transfer roll at 1 to 3%.

The film forming and supporting means may be a film forming roll on which the ceramic slurry is directly applied on the outer peripheral surface thereof by the film forming apparatus and the ceramic slurry is dried to form the ceramic sheet. In this case, since the film-forming roll and the peeling-transfer roll are also cylindrical, the peeling mode is peeled off and peeling can be performed with a relatively small force. In addition, since the ceramic sheet can be continuously formed without using a carrier film, there is no influence of elongation of the carrier film, and the manufacturing cost can be reduced.

The film forming and supporting means includes a continuous carrier film and a guide roll for supporting the inner circumferential surface of the carrier film. The ceramic sheet is formed on the outer circumferential surface of the carrier film, and the guide roll and the peeling transfer roll sandwich the carrier film therebetween And the peripheral speed of the guide roll and the peripheral speed of the peeling transfer roll may be imparted with a speed difference which can be absorbed by the shearing deformation by the elastic body. In this case, since the ceramic sheet can be formed on the carrier film in advance, it is not necessary to arrange the film forming apparatus or the drying apparatus around the guide roll, and the apparatus can be simplified. Further, not only the ceramic sheet but also an electrode pattern may be previously formed on the carrier film. In this case, there is no need to form an electrode forming apparatus or a drying apparatus around the lamination supporting means.

The lamination support means may be a lamination roll or a laminated support plate in the form of a flat plate. In the case of using a lamination roll, since the ceramic laminate can be continuously formed on the outer peripheral surface thereof, there is an advantage that quality and mass productivity are improved as compared with an intermittent lamination method.

(Effects of the Invention)

As described above, according to the present invention, since at least the outer peripheral portion of the peeling transfer roll is made of an elastic body and a predetermined speed difference is given between the contact portion of the film formation supporting means and the peeling transfer roll, Can be peeled off from the film forming and supporting means, and the transfer from the peeling transfer roll to the lamination supporting means can be performed well. As a result, a high-quality ceramic laminate can be obtained.

1 is a schematic front view of a first embodiment of an apparatus for producing a ceramic laminate according to the present invention.
2 is a plan view of the manufacturing apparatus shown in Fig.
3 is a schematic front view of a second embodiment of an apparatus for producing a ceramic laminate according to the present invention.
4 is a partial schematic view of a third embodiment of the apparatus for producing a ceramic laminate according to the present invention.
5 is a partial schematic view of a fourth embodiment of the apparatus for producing a ceramic laminate according to the present invention.
6 is a partial schematic view of a fifth embodiment of the apparatus for producing a ceramic laminate according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A plurality of embodiments of an apparatus for producing a ceramic laminated body according to the present invention will be described in detail below with reference to the drawings. The ceramic laminate to which the present invention is applied includes a laminate block for producing a multilayer electronic device such as a multilayer ceramic capacitor or a multilayer ceramic inductor.

[First Embodiment]

The production apparatus 10 shown in Fig. 1 includes a film formation roll 12, a peeling transfer roll 14, and a lamination roll 16. The film forming roll 12 is a rigid roll (cylindrical or cylindrical shape) such as a metal for forming the ceramic sheet S on the outer peripheral surface thereof, and the outer peripheral surface thereof is subjected to a releasing treatment such as a fluorine resin coating .

A film forming apparatus 20 for applying a ceramic slurry made of a material of a ceramic sheet (ceramic green sheet) S to the outer circumferential surface of the film forming roll 12 is provided around the film forming roll 12, A drying device 21 for drying the slurry is disposed. As the film forming apparatus 20, for example, a die coater, a doctor blade, a roll coater, an ink jet coater, or the like can be suitably used. A ceramic sheet S having a thin film (for example, a thickness of 10 탆 or less) can be formed by continuously applying a ceramic slurry on the film forming roll 12 from the film forming apparatus 20. The ceramic slurry is a slurry prepared by adding a resin component to a ceramic powder and dissolving and dispersing it in an organic solvent (which may be an aqueous solvent). As the drying device 21, a method of drying by hot air, a method of heating the outer peripheral surface of the film formation roll 12, a vacuum drying method and the like are employed, but any means can be selected as long as it is a means for drying the slurry according to the properties of the solvent.

The peeling transfer roll 14 is a roll in which an elastic body 14b of a predetermined thickness is fixed around the entire outer periphery of the metal roll 14a and its diameter (outer diameter of the elastic body 14b) is smaller than the diameter of the film roll 12. The outer peripheral surface 14b ₁ of the elastic body 14b is non-tacky and has a surface roughness Ra smaller than the thickness of the ceramic sheet S. The surface roughness (Ra) is preferably 0.03 to 3 mu m. The thickness of the elastic body 14b is larger than the thickness of the ceramic sheet S, and is preferably 30 to 100 占 퐉, for example. The elastic body 14b is preferably formed of, for example, an elastic material having a hardness of 20 to 80 degrees (Shore hardness: JIS K 6253: 2006). The peeling transfer roll 14 is pressed against the film forming roll 12 and the lamination roll 16 at a predetermined pressure by a pressure applying mechanism (not shown). The diameter of the lamination roll 16 is increased as the ceramic sheet S is laminated on the lamination roll 16 so that the position and pressure of the peeling transfer roll 14 can be adjusted accordingly.

The lamination roll 16 is a roll for winding the ceramic sheet S peeled off from the peeling transfer roll 14 to form a ceramic laminate. The diameter of the lamination roll 16 is larger than the diameter of the peeling transfer roll 14. The lamination roll 16 is provided with a metallic cylindrical jig 16a detachable from the rotating shaft and the ceramic sheet S can be wound on the outer peripheral surface of the cylindrical jig 16a. The ceramic sheets S wound around the lamination roll 16 are squeezed and held together by the overlapping sheet layers. Since the holding force is set to be larger than the holding force of the peeling transfer roll 14 to hold the ceramic sheet S, the ceramic sheet S is peeled off from the peeling transfer roll 14 and transferred to the lamination roll 16. As the lamination roll 16, a suction roll or an adhesive roll may be used.

An electrode printing apparatus 22 for forming an electrode pattern on the ceramic sheet S wound on the surface of the lamination roll 16 and a drying apparatus 23 for drying the electrode pattern are formed around the lamination roll 16 Respectively. As the electrode printing apparatus 22, for example, a printing apparatus such as a gravure offset printer or an inkjet printing apparatus can be used. As the drying device 23, a device such as the drying device 21 can be used.

After a predetermined number of ceramic sheets S are stacked on the lamination roll 16, the winding of the lamination roll 16 is stopped and the ceramic laminate is removed from the rotation shaft together with the cylindrical jig 16a. Then, the ceramic laminate is cut into a predetermined size by dicer cutting, after performing a press-press while keeping the shape of a cylinder or separating from a cylindrical jig. Thereafter, the multilayer electronic component is completed through a firing step and an external electrode forming step.

2, the film forming roll 12, the peeling transfer roll 14, and the lamination roll 16 are rotationally driven in the direction of the arrow by the respective driving devices 30, 31, and 32, respectively. The rotational speed sensors 30a to 32a are incorporated in the driving devices 30 to 32, respectively, and it is possible to detect the rotational speed (circumferential speed of the roll) of each roll and adjust the rotational speed to a desired rotational speed. In Fig. 2, only the film forming roll 12, the peeling transfer roll 14 and the laminating roll 16 are shown, and other devices are omitted. 2, all of the rolls 12, 14 and 16 are provided with the individual drive devices 30, 31 and 32, but a common drive device may be used, (12, 14, 16) may be synchronously rotated at a predetermined rotation speed ratio.

In this embodiment, in order to surely transfer the ceramic sheet S from the film formation roll 12 to the peeling transfer roll 14, the film formation roll 12 is subjected to a release process for lowering the adhesive force to the ceramic sheet S as low as possible And an elastic body 14b having a predetermined surface roughness Ra is provided on the outer peripheral portion of the peeling transfer roll 14 and the contact position between the film forming roll 12 and the peeling transfer roll 14 The speed of the drive devices 30 and 31 is adjusted so as to give a speed difference that can be absorbed by shearing deformation of the elastic body 14b. Shear deformation refers to elastic deformation in the moving direction of the elastic body 14b, that is, elastic deformation in the tangential direction. In addition, the speeds of the driving devices 31 and 32 are set so that there is no difference in peripheral speed between the peeling transfer roll 14 and the lamination roll 16.

For example, when the peripheral speed of the film forming roll 12 at the contact position is V1, the peripheral speed of the peeling transfer roll 14 is V2, and the maximum speed difference that can be absorbed by the shearing deformation by the elastic body 14b Is given as?,

V1? V2, and | V1-V2 |??

.

Preferably, the value of [alpha]

alpha = (0.01 to 0.03) x V1

.

Here, the transfer mechanism of the ceramic sheet S from the film forming roll 12 to the peeling transfer roll 14 will be described. The ceramic sheet S dried on the film forming roll 12 is conveyed to the contact position of the film forming roll 12 and the peeling transfer roll 14, and sandwiched therebetween. Since the peripheral speed of the film forming roll 12 (conveying speed of the ceramic sheet S) and the peripheral speed of the peeling transfer roll 14 are different from each other, a shear force acts on the interface between the ceramic sheet S and the film forming roll 12, The ceramic sheet S is peeled from the film formation roll 12 in the shear peeling mode. The peripheral speed difference between the film forming roll 12 and the peeling transfer roll 14 does not cause wrinkles or breakage in the ceramic sheet S because of the speed difference that can be absorbed by the shearing deformation of the elastic body 14b. In this embodiment, in the portion where the ceramic sheet S on the film forming roll 12 and the peeling transfer roll 14 are in contact with each other, the ceramic sheet S is peeled off from the surface of the elastic body 14b of the peeling transfer roll 14 And is adhered to the peeling transfer roll 14 in a state in which the contact area with the ceramic sheet S is increased. Therefore, even if the adhesive force between the ceramic sheet S and the elastic body 14b per unit area is small (even if the elastic body 14b does not have adhesiveness), the ceramic sheet S can be reliably held on the peeling transfer roll 14 .

When the ceramic sheet S is peeled again from the peeling transfer roll 14 and transferred to the lamination roll 16 again, since the peeling transfer roll 14 and the lamination roll 16 are formed in a cylindrical shape together, , And the peripheral speed difference between the peeling transfer roll 14 and the lamination roll 16 is set to be zero. The adhesive force between the ceramic sheet S and the elastic body 14b per unit area is small because the elastic body 14b has no tackiness and the adhesive force between the ceramic sheet S and the elastic sheet 14b on the laminated roll 16 is sufficiently large, (S) can be reliably transferred from the peeling transfer roll 14 to the laminating roll 16. The temperature of the outer circumferential surface of the lamination roll 16 may be adjusted to a predetermined temperature in order to increase the adhesive force between the ceramic sheets S when transferring the laminated sheet to the lamination rolls 16. [

Table 1 shows the peeling state of the ceramic sheet S from the film formation roll 12 when the peripheral speed difference between the film formation roll 12 and the peeling transfer roll 14 is changed in the constitution of Fig. However, the experiment was conducted under the following conditions.

Film roll: ø 200 mm metal roll

Peeling transfer roll: a metal roll having a diameter of 150 mm and having an elastic body on its surface

Surface roughness of the elastic body: Ra = 1 탆

Thickness of elastic body: 100 탆

Hardness of the elastic body: 55 [deg.] (Shore hardness)

Wrinkles occurred in the ceramic sheet S transferred to the peeling transfer roll 14 under the condition that the peripheral speed of the peeling transfer roll 14 was slower than the film forming roll 12 by 5%. Under the condition that the peripheral speed of the peeling transfer roll 14 was 3% slower than that of the film forming roll 12 to 3%, there was no defect in appearance of the ceramic sheet S transferred to the peeling transfer roll 14. The ceramic sheet S was transferred to the peeling transfer roll 14 while being ruptured in the roll axis direction at a pitch of several mm in the condition that the peripheral speed of the peeling transfer roll 14 was 5% faster than the film forming roll 12.

The results of Table 1 are as follows. Shear force is applied to the interface between the ceramic sheet S and the film forming roll 12 by shifting the rotational speed of the peeling transfer roll 14 and the conveying speed of the ceramic sheet S so that the ceramic sheet S is peeled off in the front- Could. The circumferential speed difference between the film forming roll 12 and the peeling transfer roll 14 can not be absorbed by the elastic body 14b on the surface of the peeling transfer roll 14, And the resulting ceramic sheet S was wrinkled and appeared on the peeling transfer roll 14. If the peripheral speed of the peeling transfer roll 14 is excessively fast, the amount of shear deformation of the peeling transfer roll 14 exceeds the breaking strength of the ceramic sheet S and the ceramic sheet S is broken. The difference between the peripheral speed V1 of the film forming roll 12 and the peripheral speed V2 of the peeling transfer roll 14 is set to be in the range of 1% to 3% of the peripheral speed V1 .

In the case of the production apparatus of the first embodiment, since the transfer from the film formation roll 12 to the peeling transfer roll 14 is achieved by the peripheral speed difference between the elastic body 14b formed on the outer periphery of the peeling transfer roll 14 and both rolls It is possible to satisfactorily peel and transfer even a low-strength ceramic sheet which has been conventionally difficult to peel off. When the ceramic sheet S is peeled from the film formation roll 12 and wound around the lamination roll 16 via the peeling transfer roll 14 to form a ceramic laminate, a new ceramic sheet S are continuously formed, the formation of the ceramic sheet S in the film formation roll 12 and the formation of the ceramic laminate in the lamination roll 16 are performed simultaneously. As a result, the ceramic sheet S can be continuously formed without stopping the rotation of the film-forming roll 12 once, and the continuous rotation of the lamination roll 16 can be stopped without stopping the ceramic- A sieve can be produced. As described above, since the ceramic laminate can be formed by continuous operation, the uniformity of the film thickness is better than that of the intermittent film forming method, and the quality and mass productivity are improved. In addition, since the film can be formed and laminated without using a carrier film, the manufacturing cost can be reduced.

In the first embodiment, the surface of the elastic body 14b is non-tacky and the surface thereof has a surface roughness Ra smaller than the thickness of the ceramic sheet S. However, the present invention is not limited thereto. For example, the adhesive force of the elastic body 14b to the ceramic sheet S may be equal to or smaller than the adhesive force of the film forming roll 12 to the ceramic sheet S.

[Second Embodiment]

Fig. 3 shows a manufacturing apparatus according to a second embodiment of the present invention. Parts having the same or common functions as those of the first embodiment are denoted by the same reference numerals, and redundant description will be omitted.

In the second embodiment, the film-forming and supporting means is constituted by a continuous carrier film F and a guide roll 40 for supporting the inner circumferential surface of the carrier film F, (40) and the peeling transfer roll (14). On the outer peripheral surface of the carrier film F, a release process is performed, and on the outer peripheral surface thereof, a ceramic sheet (green sheet) S and an electrode pattern (not shown) are formed thereon in advance. The formation of the ceramic sheet S on the carrier film (F) and the formation of the electrode pattern can be carried out by coating and drying a ceramic slurry as is well known in the art, printing an electrode pattern on the ceramic sheet, and drying .

The carrier film F on which the ceramic sheet S and the electrode pattern are formed is continuously supplied from the supply roll 41 and the carrier film F passes between the guide roll 40 and the peeling transfer roll 14 The ceramic sheet S having the electrode pattern is peeled off from the carrier film F so that only the carrier film F is wound around the winding roll 42. [

As the guide roll 40, a well-known roll such as a suction roll or an adhesive roll may be used so that relative displacement does not occur between the guide roll 40 and the carrier film F. The configuration of the peeling transfer roll 14 is the same as that of the first embodiment. The electrode printing apparatus 22 and the drying apparatus 23 are not provided around the lamination roll 16.

The ceramic sheet S and the electrode pattern may be supplied on the carrier film F as described above. Alternatively, only the ceramic sheet S may be formed on the carrier film F. In this case, the electrode pattern may be formed after the ceramic sheet S is laminated on the lamination roll 16 as in the first embodiment.

Between the peripheral speed of the guide roll 40 and the peripheral speed of the peeling transfer roll 14 is given a speed difference capable of being absorbed by the shearing deformation of the elastic body 14b provided on the outer peripheral portion of the peeling transfer roll 14. [ The carrier film F moves integrally with the guide roll 40 when the carrier film F on which the ceramic sheet S is formed is transported to the contact position between the guide roll 40 and the peeling transfer roll 14 A shearing force acts on the interface between the ceramic sheet S and the carrier film F by the peripheral speed difference between the guide roll 40 and the peeling transfer roll 14. [ The ceramic sheet S is deformed along the irregularities of the surface of the elastic body 14b at the portion where the ceramic sheet S and the peeling transfer roll 14 are in contact with each other so that the contact area with the ceramic sheet S is increased, To the roll (14). Therefore, in the shear peeling mode, the ceramic sheet S can be peeled off from the carrier film F to reliably hold the ceramic sheet S on the peeling transfer roll 14. The peripheral speed difference between the guide roll 40 and the peeling transfer roll 14 does not cause wrinkles or breakage of the ceramic sheet S because of the speed difference that can be absorbed by the shearing deformation of the elastic body 14b.

The configuration of the second embodiment using the elastic body in the peeling transfer roll and the configuration using the rigid suction mechanism (suction roll) with the peeling transfer roll were compared and the thickness of the ceramic green sheet capable of peeling from the carrier film on the guide roll was examined . The experimental results are shown in Table 2.

From the results shown in Table 2, it can be seen that a thinner ceramic sheet can be peeled off when an elastic body is formed on the peeling transfer roll rather than the suction mechanism. The reason is considered as follows. When the peeling transfer roll has the suction mechanism, no ceramic green sheets are held between the suction holes. When the strength of the ceramic green sheet is smaller than the peel strength from the carrier film, the ceramic green sheet between the suction holes is deformed, and if the strength exceeds the peel strength of the ceramic green sheet, the ceramic green sheet is broken. On the other hand, when an elastic body is formed on the surface of the peeling transfer roll, the entire ceramic green sheet is in contact with the elastic body, so that a part of the ceramic green sheet is not greatly deformed. Therefore, the thin ceramic green sheet can be peeled off from the carrier film without being broken during peeling. When the ceramic sheet S is continuously peeled off from the carrier film F by the peeling transfer roll 14 as in the present embodiment, there is no cut marks or the like on the carrier film F. Therefore, The carrier film F can be reused in the manufacturing process of the carrier film F.

[Third Embodiment]

4 shows a manufacturing apparatus according to a third embodiment of the present invention. Portions having the same or common functions as those of the second embodiment are denoted by the same reference numerals, and redundant description is omitted.

In the third embodiment, the film-forming and holding means is constituted by the carrier film F and the guide roll 40 for supporting the carrier film F as in the second embodiment, and the lamination support means is constituted by the plate- (50). The laminated support plate 50 is linearly driven by a driving device (not shown) so that the speed at the contact position of the peeling transfer roll 14 becomes the same.

In this embodiment, in addition to the operation of the second embodiment, the ceramic sheet S is transferred from the peeling transfer roll 14 to the laminated support plate 50. [ The adhesive force per unit area of the ceramic sheets S on the laminated support plate 50 is larger than the holding force per unit area of the peeling transfer roll 14 and the ceramic sheet S so that the ceramic sheet S can be wrinkled or broken So that it is smoothly transferred to the laminated support plate 50. The ceramic laminated body stacked on the laminated support plate 50 is pressed into a predetermined size and then subjected to a firing step and an external electrode forming step to complete the multilayer electronic component.

In this embodiment, after the ceramic sheet S is once stacked on the laminated support plate 50, the guide roll 40 and the peeling transfer roll 14 are intermittently stopped to return the laminated support plate 50 to its original position It is necessary to release the contact state between the laminated support plate 50 and the peeling transfer roll 14.

[Fourth Embodiment]

Fig. 5 shows a manufacturing apparatus according to a fourth embodiment of the present invention. Portions having the same or common functions as those of the second embodiment are denoted by the same reference numerals, and redundant description is omitted.

In the fourth embodiment, the film-forming and holding means is constituted by a carrier film F and a guide roll 40 for supporting the carrier film F as in the second embodiment, and the lamination support means is constituted by a laminate support plate 50, and the peeling transfer roll 60 has a non-circular cross-sectional shape. Here, the cross-sectional shape of the peeling transfer roll 60 is, for example, a half-moon shape in which a part of the outer periphery of the cylindrical roll is cut. An elastic body 61 is fixed to the cylindrical outer circumferential surface of the peeling transfer roll 60. As in the first embodiment, the elastic body 61 is also preferably non-sticky on the surface and has a predetermined surface roughness (Ra). In this embodiment also, the laminated support plate 50 is linearly driven so that the speed at the contact portion with the peeling transfer roll 60 becomes the same.

The ceramic sheet S is laminated by the length of the laminated support plate 50 by making the circumferential length of the peeling transfer roll 60 (excluding the defective portion) and the length of the laminated support plate 50 substantially equal to each other, The peeling transfer roll 60 and the laminated support plate 50 are temporarily brought into a noncontact state corresponding to the defective portion of the roll 60 corresponding to the laminated support plate 50 so that the laminated support plate 50 can be returned to its original position . In this case, the guide roll 40 and the peeling transfer roll 60 can be continuously rotated.

[Fifth Embodiment]

6 shows a manufacturing apparatus according to a fifth embodiment of the present invention. Portions having the same or common functions as those of the second embodiment are denoted by the same reference numerals, and redundant description is omitted.

In the fifth embodiment, the film forming and holding means is constituted by a carrier film F and a guide roll 40 for supporting the carrier film F as in the second embodiment, and the lamination supporting means is constituted by a suction roll 51, And a laminated support plate 50 in the form of a flat plate. The peeling transfer roll 14 is an endless circular roll having an elastic body 14b on the outer periphery.

In this embodiment, the carrier film F having the ceramic sheet S is intermittently supplied, and after the ceramic sheet S is transferred to the peeling transfer roll 14, the suction roll 51 And then the ceramic sheet S is transferred to the laminated support plate 50 to be laminated. The laminated support plate 50 after lamination is returned to the position before lamination again, and lamination of the next layer is performed.

When the ceramic sheet S is transferred from the peeling transfer roll 14 to the lamination roll 16 or the lamination support plate 50 in the first to third embodiments, The adhesive strength of the elastic body 14b of the ceramic laminate and the ceramic sheet S acts in a direction to lower the adhesive force between the ceramic laminate and the ceramic sheet S. Therefore, it is necessary to increase the surface pressure of the peeling transfer roll 14 and the lamination roll 16 or the lamination support plate 50. When the suction roll 51 is used, the suction pressure of the suction roll 51 can be suppressed (or vice versa) in the transfer portion to the laminated support plate 50, so that the adhesion of the ceramic laminate and the ceramic sheet S . Therefore, the ceramic sheet S can be laminated with a low surface pressure. It is advantageous in that deformation of the ceramic laminate during the lamination can be suppressed when the laminate can be laminated with a low surface pressure.

The present invention is not limited to the above-described embodiments. A new embodiment may be constructed by replacing some elements in the first to fifth embodiments with elements in another embodiment. For example, in the third and fourth embodiments (Figs. 4 and 5), the film deposition supporting means using the carrier film F and the laminated support plate 50 in the flat plate shape are combined, (12) and the plate-like laminated support plate (50) may be used in combination.

S: Ceramic sheet (ceramic green sheet) F: Carrier film
10: manufacturing apparatus 12: film forming roll (film forming supporting means)
14: Peeling transfer roll 14b: Elastic body
16: lamination roll (lamination support means) 20: film forming apparatus
21: drying device 22: electrode printing device
23: drying device 30, 31, 32: driving device
40: guide roll 50: laminated support plate

Claims (6)

Film-forming and holding means having a ceramic sheet formed on its surface,
A peeling transfer roll which is in contact with the film forming and supporting means via the ceramic sheet and separates the ceramic sheet from the film forming and supporting means,
A ceramic sheet in contact with the peeling transfer roll with the ceramic sheet interposed therebetween and peeling the ceramic sheet transferred from the peeling transfer roll from the peeling transfer roll and laminating the peeled ceramic sheet to obtain a laminated body of the ceramic sheet; In the apparatus for producing a ceramic laminated body provided with means,
Wherein at least an outer peripheral portion of the peeling transfer roll is formed of an elastic body, the elastic force of the elastic body is not greater than that of the film supporting means,
Wherein a speed difference capable of being absorbed by shearing deformation by said elastic body is imparted between said film forming and supporting means and said peeling transfer roll at a contact position of said film forming and supporting means and said peeling transfer roll, Manufacturing apparatus. The method according to claim 1,
Characterized in that the surface of the elastic body is non-tacky and has a surface roughness (Ra) smaller than the thickness of the ceramic sheet. The method according to claim 1,
Wherein the speed difference at the contact position of the film forming and supporting means and the peeling transfer roll is set in a range of 1 to 3% with respect to the speed at the contact position of the film forming and supporting means. 4. The method according to any one of claims 1 to 3,
Wherein the film forming and supporting means includes a film forming roll on which a ceramic slurry is directly applied on the outer peripheral surface thereof by a film forming apparatus and the ceramic slurry is dried to form a ceramic sheet. 4. The method according to any one of claims 1 to 3,
Wherein the film forming and supporting means includes a continuous carrier film and a guide roll for supporting an inner circumferential surface of the carrier film, wherein the ceramic sheet is formed on an outer circumferential surface of the carrier film, And a speed difference capable of being absorbed by the shearing deformation by the elastic body is imparted to the circumferential speed of the guide roll and the peripheral speed of the peeling transfer roll, . A film forming step of forming a ceramic sheet on the surface of the film-
A peeling transfer step of peeling the ceramic sheet from the film forming and supporting means by bringing the peeling transfer roll into contact with the film forming and supporting means through the ceramic sheet and transferring the peeled ceramic sheet to the outer periphery of the peeling transfer roll,
A peeling transfer roll, peeling the ceramic sheet from the peeling transfer roll by bringing the lamination support means into contact with the peeling transfer roll through the ceramic sheet, and laminating the peeled ceramic sheet on the lamination support means to form a ceramic laminate A method of manufacturing a ceramic laminate including a body forming step,
Wherein at least an outer peripheral portion of the peeling transfer roll is formed of an elastic body, the elastic force of the elastic body is not greater than that of the film supporting means,
Wherein a speed difference capable of being absorbed by shearing deformation by said elastic body is imparted between said film forming and supporting means and said peeling transfer roll at a contact position of said film forming and supporting means and said peeling transfer roll, Gt;

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