KR20240018385A - Apparatus for removing attachment, method for removing attachment, method for recycling sheet member and method for manufacturing electronic component - Google Patents

Abstract

Provided is an attachment removal device that can safely and easily remove attachments. The deposit removal device 1 of the present invention includes a supply mechanism 120 for supplying a long sheet member 100, a winding mechanism 130 for winding the sheet member 100 supplied by the supply mechanism 120, and , a pressing member that presses the sheet member 100 from the back side until it is supplied by the supply mechanism 120 and wound up by the winding mechanism 130, and folds the sheet member 100 so that the surface side becomes convex. (140) and toward the surface side of the folded sheet member 100, air is sprayed from the downstream side in the conveyance direction of the sheet member 100 to an area spanning from one side of the width direction of the sheet member 100 to the other side. A wide-area air nozzle 150, a partial air nozzle 160 that sprays air to one side and the other in the width direction of the sheet member 100, and a dust collection mechanism that collects deposits peeled off from the sheet member 100. Includes (180).

Description

Attachment removal device, attachment removal method, sheet member recycling method, and electronic component manufacturing method {APPARATUS FOR REMOVING ATTACHMENT, METHOD FOR REMOVING ATTACHMENT, METHOD FOR RECYCLING SHEET MEMBER AND METHOD FOR MANUFACTURING ELECTRONIC COMPONENT}

The present invention relates to a deposit removal device, a deposit removal method, a recycling method of a sheet member, and a manufacturing method of electronic components.

As an electronic component, for example, in a multilayer ceramic capacitor, a plurality of ceramic green sheets are stacked. Here, the ceramic green sheet is used by backing it with a sheet member such as a PET film to improve handling properties.

Recently, there has been a demand for material reuse as an environmental resource measure, and such sheet members are returned to the raw material level after the adhesion on the sheet members is removed, pelletized, and reused. Conventionally, as a method of removing such deposits on a sheet member, a method of cleaning the sheet member with an organic solvent has been used (see Patent Document 1).

Japanese Patent Publication No. 2009-291690

However, when cleaning a sheet member with an organic solvent, the organic solvent used for cleaning may have a negative impact on the environment if discarded as is, so purification of the organic solvent is necessary. Therefore, it requires a lot of work and requires a large amount of water for purification, so it cannot be said to be environmentally friendly.

The purpose of the present invention is to provide a attachment removal device and method for removing attachments that can safely and easily remove attachments, as well as an efficient recycling method for sheet members and a method for manufacturing electronic components.

In order to solve the above problem, the present invention includes a supply mechanism for supplying a long sheet member, a winding mechanism for winding the sheet member supplied by the supply mechanism, and the supply mechanism. a pressing member that presses the sheet member from the back side and folds it so that the surface side of the sheet member becomes convex while being supplied by and wound up by the winding mechanism, and the surface side of the folded sheet member a wide-area air nozzle that sprays air from a downstream side of the conveyance direction of the sheet member to an area extending from one side of the width direction of the sheet member to the other side of the sheet member; A device for removing deposits from a sheet member is provided, including partial air nozzles that spray air to each of the sheets, and a dust collection mechanism that collects deposits peeled off from the sheet member.

In addition, in order to solve the above problem, the present invention supplies a long sheet member with an attachment attached to the surface, and presses the supplied sheet member from the back side with a pressing member so that the surface side of the sheet member is convex. The folded sheet member is folded, and air is sprayed by a wide-area air nozzle toward the surface side of the folded sheet member, from the downstream side of the sheet member in the conveyance direction, to an area extending from one side of the width direction of the sheet member to the other side. In addition, the deposit is peeled off from the sheet member by blowing air from a partial air nozzle to each of the one side and the other side in the width direction of the sheet member, and the deposit peeled off from the sheet member is collected. and provides a method of removing attachments from a sheet member by winding up the sheet member from which the attachments have been peeled off.

In addition, the present invention supplies a long sheet member with an attachment attached to the surface, presses the supplied sheet member from the back side with a pressing member, folds the sheet member so that the front side of the sheet member becomes convex, and folds the sheet member. Air is sprayed by a wide-area air nozzle toward the surface side of the sheet member, from the downstream side in the conveyance direction of the sheet member, to an area spanning from one side of the width direction of the sheet member to the other, and For each of the one side and the other side in the width direction, air is blown by a partial air nozzle to peel off the deposit from the sheet member, collect the deposit peeled from the sheet member, and peel the deposit. It provides a method of recycling a sheet member, which includes winding the sheet member and pulverizing the sheet member from which the attachment has been removed to form pellets.

Additionally, the present invention supplies a long sheet member with an attachment attached to the surface, folds the supplied sheet member by pressing it from the back side with a pressing member so that the front side of the sheet member becomes convex, and folds the sheet member. Air is sprayed by a wide-area air nozzle toward the surface side of the sheet member, from the downstream side in the conveyance direction of the sheet member, to an area spanning from one side of the width direction of the sheet member to the other side, To each of the one side and the other side in the width direction of the member, air is blown by a partial air nozzle to peel off the deposit from the sheet member, collect the deposit peeled off from the sheet member, and remove the deposit. The peeled sheet member is wound, the sheet member from which the attachment has been removed is pulverized to form a pellet, the pellet is used to regenerate a long sheet member, and a ceramic green sheet is formed on the regenerated sheet member. and provides a method of manufacturing electronic components using the ceramic green sheet.

According to the present invention, it is possible to provide a attachment removal device and a attachment removal method that can safely and easily remove attachments, as well as an efficient recycling method of sheet members and a manufacturing method of electronic components.

Fig. 1 is a diagram showing a deposit removal device 1 according to the first embodiment.
FIG. 2 is a diagram showing the sheet member 100 from which the attachment 101 is removed by the attachment removal device 1.
FIG. 3 is a diagram showing a multilayer ceramic condenser 300 manufactured using the sheet member 100.
Figure 4 is a schematic diagram of an example of a sheet peeling device 200.
FIG. 5 is a diagram showing a part of the sheet peeling device 200 in which the peeling roll 202 is retracted from the peeling area A2.
FIG. 6 is a diagram showing the mother block stack 210.
FIG. 7 is a diagram illustrating the deposit removal unit 110 of the deposit removal device 1 of the first embodiment.
FIG. 8 is a diagram explaining the positions of the wide-area air nozzle 150 and the partial air nozzle 160 in the deposit removal device 1 of the first embodiment.
Fig. 9 is a diagram showing the deposit removal device 2 of the second embodiment.
Fig. 10 is a perspective view of the cutting edge 21 at the tip of the pressing blade member 20 in the second embodiment.
FIG. 11 is a diagram illustrating the position of the pressing blade member 20 with respect to the sheet member 100 of the second embodiment.
FIG. 12 is a diagram illustrating a state in which the pressure blade member 20 of the second embodiment peels off the attachment 101 while the attachment 101 is attached to the entire surface of the sheet member 100.

Hereinafter, the deposit removal device 1 and the deposit removal method according to an embodiment of the present invention will be described. FIG. 1 is a diagram showing the deposit removal device 1, and FIG. 2 is a diagram showing the sheet member 100 from which the deposit 101 is removed by the deposit removal device 1 of the embodiment.

(Sheet member (100))

The sheet member 100 is elongated and is made of a resin such as PET (polyethylene terephthalate), and an attachment 101 is attached to a peeling layer (not shown) formed on the surface. The width of the sheet member 100 is, for example, 180 mm or more and 330 mm or less, and the thickness of the sheet member 100 is, for example, 0.5 μm or more and 20 μm or less.

(Attachment (101))

The attachment 101 is, for example, the remains of a ceramic green sheet, and is attached in a ladder shape. That is, the attachment 101 consists of two longitudinal attachments ( 101a) and a plurality of width direction attachments 101b extending between the two longitudinal attachments 101a in the width direction (W) at regular intervals in the longitudinal direction (L).

In this way, the reason why the attachment 101 is attached to the sheet member 100 in a ladder shape will be explained. The sheet member 100 is used in an intermediate process for manufacturing multilayer electronic components such as the multilayer ceramic condenser 300. FIG. 3 is a diagram showing a multilayer ceramic condenser 300 manufactured using the sheet member 100. The multilayer ceramic condenser 300 is manufactured as follows.

(a) First, a peeling layer (not shown) is provided on the surface of a long, for example, PET sheet member 100, and dielectric ceramic powder, a binder, and A slurry that becomes a ceramic green sheet containing a solvent, etc. is applied in a sheet shape.

(b) Next, an electrode pattern is printed on the surface of the ceramic green sheet applied in a sheet shape to the sheet member 100.

(c) Then, the ceramic green sheet on which the electrode pattern is printed is cut into a rectangle and peeled from the sheet member 100 using the sheet peeling device 200.

Figure 4 is a schematic diagram of an example of a sheet peeling device 200. The sheet peeling device 200 includes a conveyance roll 201, a peeling roll 202, a cutting blade 203, a cutting stage 204, a peeling head 205, and a lamination stage 206. The cutting blade 203 and the cutting stage 204 are disposed in the cutting area A1 through which the sheet member 100 conveyed between the conveying roll 201 and the peeling roll 202 passes, and the peeling head 205 and The lamination stage 206 is arranged in the peeling area A2 downstream in the conveyance direction H from the cutting area A1.

The sheet member 100 holding the ceramic green sheet on which the electrode pattern is printed on the surface is conveyed by the conveyance roll 201 on the cutting stage 204 in the cutting area A1. Accordingly, the cutting blade 203 descends, and the ceramic green sheet on which the electrode pattern on the sheet member 100 is printed is cut into a rectangular shape. On the other hand, since it is difficult to cut only the ceramic green sheet from the sheet member 100, a part of the sheet member 100 may be cut with the cutting blade 203 using the ceramic green sheet as a whole.

Next, the sheet member 100 is conveyed from the cutting area A1 to the peeling area A2. The peeling head 205 descends in the peeling area A2, and the ceramic green sheet 101c, cut into a rectangle and printed with an electrode pattern, is sucked from the peeling head 205. When the ceramic green sheet 101c cut into a rectangular shape is sucked and peeled off from the sheet member 100, the residue of the ladder-shaped ceramic green sheet as shown in FIG. 2 remains as an attachment 101 on the sheet member 100. . This is the reason why the attachment 101 is attached to the sheet member 100 in a ladder shape.

(d) When the ceramic green sheet 101c cut into a rectangular shape is sucked by the peeling head 205, the peeling roll 202 retreats from the peeling area A2. FIG. 5 is a diagram showing a part of the sheet peeling device 200 in which the peeling roll 202 is retracted from the peeling area A2.

Ceramic green sheets 101c cut into rectangles are stacked on the stacking stage 206. FIG. 6 is a diagram showing a mother block laminate 210 formed by repeatedly stacking ceramic green sheets 101c cut into rectangular shapes. The mother block laminate 210 formed by stacking a predetermined number of ceramic green sheets 101c is cut to a predetermined size to obtain a plurality of laminate chips 220. Afterwards, the external electrode 310 is formed on the outer surface of the multilayer chip 220, and the multilayer ceramic capacitor 300 as shown in FIG. 3 is manufactured. Meanwhile, the laminate 210 may be laminated with ceramic green sheets on which no electrode pattern is printed.

Meanwhile, the sheet member 100 in which the ceramic green sheet remains as an attachment 101 in a ladder shape is pulverized after the attachment 101 is removed to form PET pellets that serve as the raw material for the sheet member 100. The pellets are recycled as sheet member 100, and the process from (a) described above is repeated.

(Attachment removal device (1))

Next, the attachment removal device 1 and the attachment removal method according to the embodiment for removing the attachment 101 from the sheet member 100 will be described. Returning to Figure 1, the deposit removal device 1 includes a deposit removal unit 110 and a dust collection mechanism 180.

(Attachment removal unit 110)

Figure 7 is a diagram explaining the attachment removal unit 110. The attachment removal unit 110 includes a supply mechanism 120 for supplying the sheet member 100, a winding mechanism 130 for winding the sheet member 100 supplied by the supply mechanism 120, and a supply mechanism 120. ) and a pressing member 140 that presses the sheet member 100 from the back side until it is wound by the winding mechanism 130 and folds the sheet member 100 so that the surface side becomes convex; , from the downstream side of the conveyance direction (H) of the sheet member 100 toward the surface side of the sheet member 100 and in the width direction (W) of the sheet member 100 rather than the position where the pressing member 140 is disposed. It includes a wide-area air nozzle 150 that sprays air across the sheet member 100, and a partial air nozzle 160 that sprays air on both sides of the sheet member 100 in the width direction (W).

The attachment removal unit 110 additionally includes a back side air nozzle 170 that sprays air onto the back side of the sheet member 100 from the upstream side of the conveyance direction (H) of the sheet member 100 rather than the pressing member 140. Includes.

Additionally, the deposit removal unit 110 includes an ionizer 191 and a removal sensor 192 on the downstream side of the pressing member 140 in the conveyance direction (H). The ionizer 191 causes the attachment 101 removed by the back side air nozzle 170, the pressing member 140, the wide-area air nozzle 150, and the partial air nozzle 160 to be blown up by air and to the sheet member ( 100) to prevent reattachment. The removal sensor 192 is, for example, a transmissive laser sensor or a fiber sensor, and measures the removal rate of the removed deposit 101.

(Supply mechanism 120)

The supply mechanism 120 includes a supply roll 121, and a brake 123 for applying tension to the sheet member 100 is mounted on the central axis of the supply roll 121. A long sheet member 100 to which the above-described attachment 101 is attached in a ladder shape is wound around the supply roll 121. Although the sheet member 100 is not limited to this, in the embodiment, the surface to which the attachment 101 is attached is wound around the supply roll 121 with the inner diameter side facing, and is supplied with this surface facing downward.

(Winding mechanism 130)

The winding mechanism 130 includes a winding roll 131, and the central axis of the winding roll 131 is connected to a winding motor (not shown). The take-up motor rotates to rotate the take-up roll 131 and the sheet member 100 is taken up against the brake 123, so that the sheet member 100 is conveyed at a constant conveyance speed while maintaining constant tension. In the embodiment, the conveyance speed of the sheet member 100 is 100 m/min or more and 250 m/min or less.

Meanwhile, the attachment removal unit 110 additionally includes two auxiliary rolls 122 and 132. The sheet member 100 supplied from the supply roll 121 is guided and conveyed by the auxiliary roll 122 and the auxiliary roll 132 with the surface to which the attachment 101 is attached facing downward, and is conveyed by the winding mechanism 130 ) is wound on the winding roll 131.

(Pressure member 140)

In the embodiment, the pressing member 140 is a pressing blade with a sharp tip. The pressing member 140 is disposed between the auxiliary roll 122 and the auxiliary roll 132 and is pressed against the sheet member 100 from the back side of the sheet member 100. In the embodiment, the surface of the sheet member 100 faces downward, so the pressing member 140 presses the sheet member 100 from top to bottom.

When the pressing member 140 is pressed against the sheet member 100 from the back side, the sheet member 100 is flexible and thus folds to follow the shape of the tip of the pressing member 140. On the other hand, the attachment 101 attached to the sheet member 100 is a ceramic green sheet in the embodiment, and it is difficult to fold it to the same shape as the tip of the pressing member 140. Since a release agent is applied to the surface of the sheet member 100, a gap is created between the attachment 101 and the sheet member 100, and the attachment 101 is peeled off from the sheet member 100 and falls downward. In this way, the attachment 101 is separated from the sheet member 100.

If the tip radius (R) of the pressing member 140 is greater than 1 mm, it becomes difficult to create a difference in the degree of folding of the attachment 101 and the sheet member 100, making it difficult to peel the attachment 101 from the sheet member 100. Lose. Additionally, if it is smaller than 0.1 mm, there is a possibility that the sheet member 100 may be damaged, such as being broken from the sheath created by the cutting blade 203. Therefore, the tip radius (R) of the pressing member 140 is 1 mm or less, and is preferably 0.1 mm or more and 0.5 mm or less.

The sheet member 100 pressed by the pressing member 140 so that the surface side becomes convex is folded at the folding angle θ1. If the folding angle θ1 is greater than 90°, it becomes difficult for there to be a difference in the degree of folding of the attachment 101 and the sheet member 100, making it difficult to peel the attachment 101 from the sheet member 100. Therefore, the folding angle θ1 is 90° or less, preferably 30° or more and 70° or less, and more preferably 30° or more and 60° or less.

(Wide area air nozzle (150))

As described above, the attachment 101 is formed in a ladder shape. Among the attachments 101, the width direction attachment 101b has a short length in the longitudinal direction L, and therefore cracks are unlikely to occur even when pressed by the pressing member 140, making it difficult to form a trigger for peeling. Accordingly, the deposit removal device 1 of the embodiment includes a wide-area air nozzle 150 to facilitate peeling off the width direction deposit 101b.

FIG. 8 is a view explaining the positions of the wide-area air nozzle 150 and the partial air nozzle 160, and is a view of the deposit removal device 1 shown in FIG. 7 viewed from bottom to top. The wide-area air nozzle 150 has a plurality of jet nozzles 151 arranged at regular intervals along the width direction (W) of the sheet member 100.

The wide-area air nozzle 150 is disposed on the downstream side of the sheet member 100 in the conveyance direction H rather than the position where the pressing member 140 is disposed. As shown in FIGS. 7 and 8, the jet port 151 of the wide-area air nozzle 150 is located at a distance L1 from the pressing member 140 in the conveyance direction H, and as shown in FIG. 7, the seat member It is placed at a distance T1 from (100). L1 is preferably 5 mm or more and 30 mm or less, and T1 is preferably 3 mm or more and 20 mm or less.

Air is sprayed from the outlet 151 of the wide-area air nozzle 150 toward the position where the sheet member 100 is folded by the pressing member 140. The flow rate of air sprayed from the wide-area air nozzle 150 is preferably 200 L/min or more and 400 L/min or less.

The wide-area air nozzle 150 sprays air from one side of the width direction W to the other, at least over the entire area where the ladder-shaped attachment 101 is attached. It is preferable that the wide-area air nozzle 150 sprays air to a wider area in the width direction (W) than the area where the ladder-shaped attachment 101 is attached.

(Partial air nozzle (160))

In this way, the attachment 101 is removed by the pressing member 140 and the wide-area air nozzle 150, but two longitudinal attachments 101a extending in the longitudinal direction (L) among those attached in a ladder shape Since there is a large amount, additional items may remain.

Accordingly, the deposit removal device 1 of the embodiment additionally includes a partial air nozzle 160 . The partial air nozzle 160 is a partial air nozzle 160a that sprays air toward one side of the width direction W of the sheet member 100, and a partial air nozzle 160a that sprays air toward the other side of the width direction W of the sheet member 100. Two partial air nozzles (160b) for spraying air are provided, and each has an outlet (161). The width between the two jets 161 is preferably 60 mm or more and 150 mm or less. The partial air nozzle 160a and partial air nozzle 160b spray air to an area of 15% or more and 25% or less of the length of the sheet member 100, respectively.

Like the wide-area air nozzle 150, the partial air nozzle 160 is disposed downstream in the conveyance direction H of the sheet member 100 from the position where the pressing member 140 is disposed. The jet port 151 of the partial air nozzle 160 is also arranged at a position apart from the pressing member 140 by a distance L1 in the conveyance direction H and at a position away from the sheet member 100 by a distance T1. L1 is preferably 5 mm or more and 30 mm or less, and T1 is preferably 3 mm or more and 20 mm or less. Additionally, air is sprayed from the blowout port 161 of the partial air nozzle 160 toward the position where the sheet member 100 is folded by the pressing member 140. The flow rate of air sprayed from the partial air nozzle 160 is preferably 200 L/min or more and 400 L/min or less, similar to the wide area air nozzle 150.

(Back side air nozzle (170))

In addition, by seaming of the sheet member 100 on the supply roll 121, the attachment 101, including the binder, is transferred to the back side of the sheet member 100 to which the release agent is not applied. There are cases where it happens. In particular, the occurrence of transfer becomes noticeable at about 30 mm from the beginning of the winding close to the paper tube. If the sheet member 100 is conveyed with the attachment 101 transferred, the transferred attachment 101 is scraped off and deposited on the pressing member 140, thereby interfering with the pressing by the pressing member 140. There is.

Accordingly, the deposit removal device 1 of the embodiment further includes a back side air nozzle 170 that sprays air on the back side of the sheet member 100 to blow away the transferred deposit 101. The back side air nozzle 170 is preferably, for example, a pata gun that ejects air in a spiral shape.

The back side air nozzle 170 is arranged upstream of the pressing member 140 in the conveyance direction H of the sheet member 100. In the embodiment, the back side air nozzle 170 is arranged to spray air near the inflection point where the supply roll 121 of the sheet member 100 changes from a circular orbit around the circumference to a straight orbit.

Additionally, the distance between the rear air nozzle 170 and the position on the sheet member 100 where air is sprayed becomes smaller as the sheet member is supplied from the supply roll 121. However, due to the driving unit (not shown), the distance between the air blowing position and the air blowing position on the sheet member 100 is constant regardless of the amount of sheet member 100 wound around the supply roll 121. So that it can be moved. Therefore, air can always be sprayed onto the sheet member 100 at constant wind speed and wind volume.

In the embodiment, the back side air nozzle 170 has an air pressure of 0.5 MPa and an air volume of 110 L/min, and the removal speed of the deposit 101 is equivalent to 200 m/min.

As a result of actually conducting an experiment using fine particles of 1.7㎛, 3.4㎛, and 3.35㎛, when the distance between the rear air nozzle 170 and the sheet member 100 is 50㎜, deposits of 1.7㎛, 3.4㎛, and 3.35㎛ were observed. It was possible to remove . When the distance between the rear air nozzle 170 and the sheet member 100 was 100 mm, it was possible to similarly remove deposits of 1.7 μm, 3.4 μm, and 3.35 μm. When the distance between the rear air nozzle 170 and the sheet member 100 was 150 mm, adhesion of 3.4 μm and 3.35 μm could be removed, but 1.7 μm could not be removed. When the distance between the rear air nozzle 170 and the sheet member 100 was 200 mm, none of 1.7 μm, 3.4 μm, and 3.35 μm could be removed. Therefore, the distance between the rear air nozzle 170 and the sheet member 100 is preferably 50 mm or more and 100 mm or less.

(Dust collection device (180))

The dust collection mechanism 180 includes a suction hood 181 disposed below the attachment removal unit 110, a SUS drum 182 connected to the suction hood 181, and a suction hood 181 through the SUS drum 182. It includes a vacuum device 183 that suctions the inside. The adherent material 101 peeled off from the sheet member 100 falls into the suction hood 181, is sucked in by the vacuum device 183, and is collected in the SUS drum 182.

According to the attachment removal method using the attachment removal device 1 of the first embodiment, the sheet member 100 supplied from the supply roll 121 is placed with the surface to which the attachment 101 is attached facing downward, and the auxiliary roll ( 122) and the auxiliary roll 132, it is guided and conveyed, and is wound on the winding roll 131 of the winding mechanism 130.

When the pressing member 140 is pressed against the sheet member 100 from the back side, the sheet member 100 is thin and is folded to follow the shape of the tip of the pressing member 140. On the other hand, the attachment 101 attached to the sheet member 100 is a ceramic green sheet in the embodiment and is thicker than the sheet member 100, so it is difficult to fold it to the same shape as the tip of the pressing member 140. Accordingly, a gap is created between the sheet member 100 and the attachment 101, and the attachment 101 is separated from the sheet member 100 and falls downward. In this way, the attachment 101 is separated from the sheet member 100.

At this time, even when the width direction attachment 101b of the attachments 101 is pushed by the pressing member 140, cracks are unlikely to occur, and it is difficult to form a trigger for peeling. However, the deposit removal device 1 of the embodiment includes a wide-area air nozzle 150, and air is sprayed onto the width direction deposit 101b, so that it is easy to cause cracks in the width direction deposit 101b. The removal efficiency of the deposit 101 is improved.

In addition, the wide-area air nozzle 150 sprays air over a wide area in the width direction (W), so air can be sprayed all over the attachment 101 even if the sheet member 100 is curved.

In addition, among those attached in a ladder shape, air is additionally sprayed by the partial air nozzle 160 for the two longitudinal attachments 101a extending in the longitudinal direction (L), so that the longitudinal attachments 101a can also be removed more effectively.

In addition, according to the embodiment, since the back side air nozzle 170 is provided to spray air on the back side of the sheet member 100, the attachment 101 transferred to the back side of the sheet member 100 to which the release agent is not applied. can blow away Accordingly, the attachment 101 is not deposited on the pressing member 140 portion.

Then, the sheet member 100 from which the attachment 101 has been removed by the attachment removal device 1 is pulverized to form PET pellets, and the pellets are recycled as the sheet member 100, thereby recycling the sheet member 100. can be provided.

Additionally, a slurry that becomes a ceramic green sheet is applied in a sheet shape on the recycled sheet member 100. Next, an electrode pattern is printed on the surface of the sheet member 100 where the ceramic green sheet is applied in a sheet shape. Then, the ceramic green sheet on which the electrode pattern is printed is cut into a rectangle and peeled from the sheet member 100 using the sheet peeling device 200. The mother block laminate 210 is formed by stacking the peeled ceramic green sheets 101c. The mother block stack 210 is cut to a predetermined size to obtain a plurality of stack chips 220. Thereafter, the multilayer chip 220 is fired and the external electrode 310 is formed on the outer surface, thereby providing a manufacturing method for manufacturing the multilayer ceramic capacitor 300 as an electronic component.

(Second Embodiment)

Fig. 9 is a diagram explaining the deposit removal device 2 of the second embodiment. Unlike the deposit removal device 1 of the first embodiment, the deposit removal device 2 is not provided with a pressing member and an air nozzle, and a pressing blade member 20 is disposed. Since other parts are the same as those in the first embodiment, the same parts are given the same reference numerals as those in the first embodiment, and description is omitted.

(Pressure blade member (20))

The pressing blade member 20 extends along the blade axis A and has a blade tip 21 curved in a cutting surface shape perpendicular to the blade axis A. Figure 10 is a perspective view of the blade tip 21 at the tip of the pressing blade member 20. The curved shape of the blade tip 21 is, for example, a circular arc shape or an elliptical arc shape.

FIG. 11 is a view explaining the position of the pressing blade member 20 with respect to the sheet member 100. As shown, a plurality of press blade members 20 are arranged in a row in the width direction W of the sheet member 100. Additionally, a plurality of rows of press blade members 20 arranged in a row in the width direction W are each arranged at a plurality of different positions in the conveyance direction H. The row of press blade members 20 consists of a front row 20A arranged at a position H1 in the transport direction from the upstream side to the downstream side in the transport direction H, and a rear row 20B arranged at a position H2 in the transport direction. ) are placed in two different locations.

Additionally, the blade axis A is disposed inclined at a contact angle θ2 with respect to the sheet member 100, as shown in FIG. 9 . The contact angle (θ2) is preferably 10° or more and 20° or less.

The pressure blades of the rear row 20B are positioned so that the center of the width direction (W) is on the downstream side of the conveyance direction (H) of the position in the width direction (W) between the adjacent pressure blade members 20 in the front row (20A). A member 20 is disposed. And, in the width direction W, the area where the pressing blade members 20 of the front row 20A press the sheet member 100, and the area where the pressing blade members 20 of the rear row 20B press the sheet member 100. Some areas overlap. That is, the blade tip 21 of the pressure blade member 20 of the front row 20A and the blade tip 21 of the pressure blade member 20 of the rear row 20B are partially overlapping sheet members in the width direction W ( Pressurize the area of 100).

In addition, the blade axis A is slightly inclined at an angle α with respect to the conveyance direction H of the sheet member 100, as shown in FIG. 11 .

According to the attachment removal method using the attachment removal device 2 of the second embodiment, the sheet member 100 supplied from the supply roll 121 is placed with the surface to which the attachment 101 is attached facing downward, and the auxiliary roll ( 122) and the auxiliary roll 132, it is guided and conveyed, and is wound on the winding roll 131 of the winding mechanism 130.

The pressing blade member 20 is moved along the blade axis during conveyance between the sheet member 100 being supplied from the supply roll 121 of the supply mechanism 120 and being wound by the take-up roll 131 of the take-up mechanism 130. (A) follows the conveyance direction H of the sheet member 100 and is inclined at an angle θ2 in the vertical direction with respect to the sheet member 100, and cuts the surface of the sheet member 100 with the blade tip 21. Pressurize.

A predetermined tension is applied to the sheet member 100, and the cutting blade 203 is pressed, thereby causing the sheet member 100 to curve along the shape of the cutting blade 203. Then, the attachment 101 of the sheet member 100 is scraped and peeled off by the blade tip 21 of the pressing blade member 20.

At this time, when the sheet member 100 is pressed with the blade tip 21, the sheet member 100 is curved to follow the curved shape of the blade tip 21, so the blade tip 21 is pressed against the sheet member 100. By digging in, the attachment 101 can be peeled off efficiently. Additionally, since the blade tip 21 is curved, it is difficult to damage the sheet member 100 compared to a straight blade.

At this time, for example, what passes between the pressure blade members 20 and the pressure blade members 20 lined up in the width direction (W) in the front row 20A of the width direction attachment 101b is the front row 20A. There are cases where the pressure blade member 20 is not sufficiently scraped and remains.

However, the pressure blade members 20 of the rear row 20B are arranged on the downstream side in the conveyance direction H in the width direction W between adjacent pressure blade members 20 in the front row 20A. Therefore, among the width direction attachments 101b, those remaining without being scratched after passing between the pressure blade members 20 and the pressure blade members 20 lined up in the width direction W in the front row 20A are those of the rear row 20B. It is scratched by the pressure blade member (20). Therefore, the attachment 101 can be sufficiently removed.

If the contact angle θ2 between the sheet member 100 and the blade tip 21 of the pressure blade member 20 is greater than 20°, it is difficult to smoothly peel off the attachment 101, and the blade tip 21 is not attached to the attachment 101. ), there is a possibility that the tip of the blade (21) may be damaged. Additionally, if it is less than 10°, there is a possibility that parts other than the blade tip 21 of the pressing blade member 20 may contact the sheet member 100, thereby interfering with conveyance of the sheet member 100. However, since the blade axis A of the embodiment is disposed inclined at a contact angle θ2 of 10° or more and 20° or less with respect to the sheet member 100, this is not the case.

The blade axis A is arranged slightly obliquely at a slight angle α shown in FIG. 11 with respect to the conveyance direction H of the sheet member 100. Therefore, damage to the sheet member 100 caused by cut marks is prevented.

FIG. 12 is a diagram illustrating a state in which the pressure blade member 20 peels off the attachment 101 while the attachment 101 is attached to the entire surface of the sheet member 100. According to the deposit removal device 2 of the second embodiment, not only the ladder-shaped deposit 101 but also the deposit 101 attached to the entire surface of the sheet member 100 as shown in FIG. 12 can be effectively removed. there is.

Then, the sheet member 100 from which the attachment 101 has been removed by the attachment removal device 2 is pulverized to form PET pellets, and the pellets are recycled as the sheet member 100, thereby recycling the sheet member 100. can be provided.

Additionally, a slurry that becomes a ceramic green sheet is applied in a sheet shape on the recycled sheet member 100. Next, an electrode pattern is printed on the surface of the sheet member 100 where the ceramic green sheet is applied in a sheet shape. Then, the ceramic green sheet on which the electrode pattern is printed is cut into a rectangle and peeled from the sheet member 100 using the sheet peeling device 200. The mother block laminate 210 is formed by stacking the peeled ceramic green sheets 101c. The mother block stack 210 is cut to a predetermined size to obtain a plurality of stack chips 220. Thereafter, by forming the external electrode 310 on the outer surface of the multilayer chip 220, a manufacturing method for manufacturing the multilayer ceramic capacitor 300 as an electronic component can be provided.

Preferred embodiments of the present invention have been described above, but the present invention includes the following combinations.

<1> Between a supply mechanism for supplying a long sheet member, a winding mechanism for winding the sheet member supplied by the supply mechanism, and the supply mechanism until it is wound by the winding mechanism. a pressing member that presses the sheet member from the rear side and folds the sheet member so that the front surface side of the sheet member becomes convex; a wide-area air nozzle that blows air to an area extending from one side of the width direction to the other side; a partial air nozzle that blows air to each of the one side and the other side of the width direction of the sheet member; and the separation from the sheet member. A device for removing deposits from a sheet member, including a dust collection mechanism for collecting deposits.

<2> In clause 1,

The deposit removal device is provided with two partial air nozzles, one on one side and the other, and each of the partial air nozzles sprays air to an area having a length of 15% or more and 25% or less of the width of the sheet member.

<3> In paragraph 1 or 2,

A deposit removal device comprising a backside air nozzle that sprays air onto the backside of the sheet member from an upstream side of the press member in the conveyance direction of the sheet member.

<4> In clause 3,

The supply mechanism includes a supply roll on which the sheet member is wound, and regardless of the amount of the sheet member wound around the supply roll, the back side air nozzle is configured to provide air by the blowing position of the air and the back side air nozzle. A deposit removal device wherein the blowing position is variable so that the distance between the sheet members through which air is blown is constant.

<5> In paragraph 3 or 4,

A deposit removal device wherein the air is sprayed in a spiral shape from the back side air nozzle.

Additionally, the sheet peeling device 200 and the adhesion removal unit 110 may be installed integrally in the same equipment.

<6> Supplying a long sheet member with an attachment attached to the surface, pressing the supplied sheet member from the back side with a pressing member, folding the sheet member so that the front side of the sheet member becomes convex, and folding the folded sheet. Air is sprayed by a wide-area air nozzle from the downstream side of the conveyance direction of the sheet member toward the surface side of the member to an area extending from one side of the width direction of the sheet member to the other, and the To each of the one side and the other side in the width direction, air is blown by a partial air nozzle to peel off the deposit from the sheet member, collect the deposit peeled from the sheet member, and collect the deposit from which the deposit has been peeled. A method of removing deposits from a sheet member, comprising winding up the sheet member.

<7> Supplying a long sheet member with attachments on the surface, pressing the supplied sheet member from the back side with a pressing member, folding the sheet member so that the front side of the sheet member becomes convex, and folding the folded sheet. Air is sprayed by a wide-area air nozzle from the downstream side of the conveyance direction of the sheet member toward the surface side of the member to an area extending from one side of the width direction of the sheet member to the other, and the To each of the one side and the other side in the width direction, air is blown by a partial air nozzle to peel off the deposit from the sheet member, collect the deposit peeled from the sheet member, and collect the deposit from which the deposit has been peeled. A method of recycling a sheet member, comprising: winding up a sheet member and pulverizing the sheet member from which the attachment has been removed to form pellets.

<8> Supplying a long sheet member with attachments on the surface, pressing the supplied sheet member from the back side with a pressing member, folding the sheet member so that the front side of the sheet member becomes convex, and folding the folded sheet. Air is sprayed by a wide-area air nozzle from the downstream side of the conveyance direction of the sheet member toward the surface side of the member to an area extending from one side of the width direction of the sheet member to the other, and the To each of the one side and the other side in the width direction, air is blown by a partial air nozzle to peel off the deposit from the sheet member, collect the deposit peeled from the sheet member, and collect the deposit from which the deposit has been peeled. Winding up a sheet member, pulverizing the sheet member from which the attachment has been removed to form a pellet, using the pellet to regenerate a long sheet member, and forming a ceramic green sheet on the regenerated sheet member, A method of manufacturing electronic components using ceramic green sheets.

θ1: Folding angle θ2: Contact angle
A: Blade axis 1, 2: Attachment removal device
2: Attachment removal device 20: Pressure blade member
20A: Front row 20B: Back row
21: Blade tip 100: Sheet member
101: Attachment 101a: Longitudinal attachment
101b: Width direction attachment 101c: Ceramic green sheet
110: Attachment removal unit 120: Supply mechanism
121: supply roll 122: brake
122: Auxiliary roll 130: Winding mechanism
131: winding roll 132: auxiliary roll
140: Pressure member 150: Wide area air nozzle
151: outlet 160, 160a, 160b: partial air nozzle
161: outlet 170: back side air nozzle
180: Dust collection device 200: Sheet peeling device
300: Multilayer ceramic condenser

Claims (8)

A supply mechanism for supplying a long sheet member,
a winding mechanism for winding up the sheet member supplied by the supply mechanism;
a pressing member that presses the sheet member from the back side until it is supplied by the supply mechanism and wound up by the winding mechanism, and folds the sheet member so that the front surface side of the sheet member becomes convex;
From the downstream side of the conveyance direction of the sheet member, toward the surface side of the folded sheet member,
a wide-area air nozzle that sprays air to an area extending from one side of the width direction of the sheet member to the other side;
a partial air nozzle that sprays air to each of the one side and the other side of the sheet member in the width direction;
A device for removing deposits from a sheet member, comprising a dust collection mechanism for collecting deposits peeled off from the sheet member. According to paragraph 1,
Two partial air nozzles are provided on one side and two on the other side, and each of the partial air nozzles sprays air to an area having a length of 15% or more and 25% or less of the width of the sheet member. According to paragraph 1,
On the upstream side of the conveyance direction of the sheet member rather than the pressing member,
A deposit removal device comprising a back side air nozzle that sprays air on the back side of the sheet member. According to paragraph 3,
The supply mechanism includes a supply roll on which the sheet member is wound, regardless of the amount of the sheet member wound on the supply roll,
A deposit removal device wherein the back side air nozzle has a variable blowing position so that the distance between the air blowing position and the sheet member from which air is blown by the back side air nozzle is constant. According to paragraph 3,
A deposit removal device wherein the air is sprayed in a spiral shape from the back side air nozzle. Supplying a long sheet member with an attachment attached to the surface,
The supplied sheet member is pressed from the back side by a pressing member and folded so that the front surface of the sheet member becomes convex;
From the downstream side of the conveyance direction of the sheet member, toward the surface side of the folded sheet member,
Air is sprayed by a wide-area air nozzle to an area extending from one side of the width direction of the sheet member to the other side,
The attachment is peeled off from the sheet member by blowing air from a partial air nozzle to each of the one side and the other side of the sheet member in the width direction,
Collecting the deposits peeled off from the sheet member,
A method of removing a deposit from a sheet member, comprising winding up the sheet member from which the deposit has been peeled off. Supplying long sheet members with attachments on the surface,
The supplied sheet member is pressed from the back side by a pressing member and folded so that the front surface of the sheet member becomes convex;
From the downstream side of the conveyance direction of the sheet member, toward the surface side of the folded sheet member,
Air is sprayed by a wide-area air nozzle to an area extending from one side of the width direction of the sheet member to the other side,
The attachment is peeled off from the sheet member by blowing air from a partial air nozzle to each of the one side and the other side of the sheet member in the width direction,
Collecting the deposits peeled off from the sheet member,
Winding up the sheet member from which the attachment has been peeled,
A method of recycling a sheet member, wherein the sheet member from which the attachment has been removed is pulverized to form pellets. Supplying a long sheet member with an attachment attached to the surface,
The supplied sheet member is pressed from the back side by a pressing member and folded so that the front surface of the sheet member becomes convex;
From the downstream side of the conveyance direction of the sheet member, toward the surface side of the folded sheet member,
Air is sprayed by a wide-area air nozzle to an area extending from one side of the width direction of the sheet member to the other side,
The attachment is peeled off from the sheet member by blowing air from a partial air nozzle to each of the one side and the other side of the sheet member in the width direction,
Collecting the deposits peeled off from the sheet member,
Winding up the sheet member from which the attachment has been peeled,
The sheet member from which the attachment has been removed is pulverized to form pellets,
Regenerating long sheet members using the pellets,
Forming a ceramic green sheet on the recycled sheet member,
A method of manufacturing electronic components using the ceramic green sheet.