JP3482953B2 - Fine particle carrying sheet, method for producing fine particle carrying sheet, fine particle carrying sheet manufacturing apparatus, and honeycomb structure - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an air purification device,
The present invention relates to a honeycomb structure used for manufacturing a dehumidifying / humidifying device, various wastewater purifying devices, and the like, a sheet as a material thereof, a method for manufacturing the sheet, and a manufacturing apparatus.

[0002]

2. Description of the Related Art Conventionally, there have been the following techniques for supporting fine particles on a base material such as a base sheet.

(A) By immersing the base material in a slurry which is a mixed liquid of fine particles and a binder, the fine particles are supported on the base material via a binder layer (dipping method).

(B) The binder is coated on the base material to form a binder layer having a predetermined thickness, the fine particles are dispersed on the binder layer, and then the fine particles are pressed against the base material by a pressing roller, whereby the fine particles are applied to the base material. Supporting via a binder layer (scattering and pressing method-Patent # 5305521-PatentGenius
No. 3 and Japanese Patent Laid-Open No. 6-388-).

(C) A binder is coated on a base material to form a binder layer having a predetermined thickness, and fine particles are sprayed onto the binder layer, whereby the fine particles are carried on the base material through the binder layer (spraying method- JP-A-8-98
No. 876, No. 7-155521 and No. 9-225302.

(D) A base material is coated with a binder to form a binder layer having a predetermined thickness, and the base material is carried in between two flat plate electrodes. A voltage is applied between the two flat plate electrodes to dielectrically polarize the fine particles, and the fine particles are carried by the electrostatic force on the substrate through the binder layer (electrostatic flocking method).

(E) The base material is grounded to serve as an anode, while a negative charge is applied to the atomized fine particles to cause the fine particles to scatter in the electric field surrounding the base material. Support (electrostatic powder coating method).

(F) By sputtering or vapor deposition,
The fine particles are once heated and evaporated to form a film on the substrate (physical vapor deposition method-see Japanese Patent Application Laid-Open No. 10-286456).

[0009]

However, since the above-mentioned dipping method (a) is a method of immersing the base material in the slurry and pulling it up, the binder layer must be thick and uniform. Is difficult. In order to make the thickness of the binder layer thin and uniform, it is necessary to lower the viscosity of the slurry, but if the viscosity is too low, the amount of fine particles attached per unit area will decrease and the function will be sufficiently exerted. Can't do it. For this reason, the viscosity of the slurry cannot be set to be too low, and in consideration of the smoothness of the binder layer and the amount of fine particles deposited, generally, it is formed on the base material (101) as shown in FIG. 2 (b). The layer thickness (t1) of the bound binder layer (102) is
The thickness is set to 30 to 40 μm, which increases the cost. In addition, in this dipping method, the base material (101)
Most of the fine particles (103) carried on the are buried in the binder layer (102),
The function originally possessed by the fine particles (103) is buried in the binder and is not in a state capable of exhibiting the function sufficiently. Furthermore, it is generally difficult to uniformly disperse the fine particles (103) in the slurry, and the fine particles (10
It is difficult to evenly distribute and support 3) on the entire base material (101). In addition, since the dipping method is a method of repeating the operation of immersing the base material (101) in the slurry one by one and pulling it up,
It is difficult to apply when the base material (101) is a long product such as a sheet.

In both of the spray pressing method (b) and the spraying method (c), the binder coated base material is passed through a layer thickness adjusting roll to form a binder layer on the base material. Since the layer thickness of the binder layer can be freely controlled, the layer thickness (t2) of the binder layer (202) can be set as thin as about 10 μm as shown in FIG. It is possible to carry out continuous operations such as fine particle spraying and spraying, and it can be applied even when the base material (201) is a long object such as a sheet, but on the other hand, fine particles (203) are sprayed. Since it adheres to the binder layer (202) by spraying or spraying, unevenness is inevitably generated, and it is difficult to uniformly distribute the fine particles (103) over the entire base material (101) in a high density.

In the electrostatic flocking method of (d) above, the fine particles are carried on the substrate by electrostatic force, so that the above (a) to (a)
Compared to (c), the fine particles can be uniformly distributed and supported on the entire base material, but since the dielectric polarization is used to support the fine particles, the shape of the fine particles is limited to the elongated shape.
Poor versatility. In addition, the equipment becomes large-scale and the equipment cost increases.

The electrostatic powder coating method of (e) above and (f)
Similar to the electrostatic flocking method of (d), both of the physical vapor deposition methods of (3) can carry fine particles uniformly distributed and supported on the entire substrate, but the equipment becomes large and the equipment cost is high. Bulky. In particular, in the electrostatic powder coating method (e), since charged fine particles are sprayed, the fine particles adhere not only to the binder layer but also to the wall surface of the processing chamber, making it difficult to remove them. It gets spicy.

Further, the spray pressing method of the above (b),
In the spraying method of (c) and the electrostatic flocking method of (d), in addition to the above-mentioned drawbacks, in both cases, a binder layer for supporting fine particles on a substrate is formed by coating. Compared to other methods that do not use the process, the productivity decreases accordingly. Further, depending on the material of the base material, the affinity with the binder may be poor, and in this case, it is difficult to form the binder layer by coating, and the selection of the base material is limited. There is also a method of improving the affinity between the base material and the binder by subjecting the base material to physical or chemical treatment, but in this case, the number of processing steps increases and the productivity decreases.

The present invention has been made in view of the above points, and an object thereof is to use fine particles such as functional fine particles in a high density, in an orderly manner, and in large scale regardless of the type. It is to obtain a sheet carrying fine particles efficiently. Furthermore, the versatility is large regardless of the material of the base sheet as the base material.

[0015]

In order to achieve the above object, the present invention is characterized in that fine particles (4) are wrapped in a binder layer (3) and charged immediately before being loaded on a base sheet (2). And

Specifically, the present invention relates to a fine particle carrying sheet (1) in which fine particles (4) are carried on a base sheet (2), a method for producing the fine particle carrying sheet (1), and the fine particle carrying sheet (1). ) Is manufactured, and the honeycomb structure (A) made of the above-mentioned fine particle carrying sheet (1) is targeted, and the following means for solving the problems are taken.

That is, the inventions according to claims 1 and 2 are
The present invention relates to a fine particle carrying sheet (1), of which,
In the invention according to claim 1, the fine particles (4) are in the form of double-structured composite fine particles (5) which are wrapped with a binder layer (3), and the composite fine particles (5) are
The base sheet (2) is supplied to an electric field region (23) which continuously passes through and is charged in a unipolar manner, and is arranged in an orderly manner by an electrostatic force, and covers the entire base sheet (2) with high density. In this state, one or two or more fine particle layers (24) are carried on the base sheet (2).

The invention described in claim 2 is characterized in that, in the invention described in claim 1, the fine particles (4) are functional fine particles.

The invention described in claims 3 and 4 relates to a method for producing a fine particle carrying sheet (1), of which,
The invention according to claim 3 encloses the fine particles (4) with a binder layer (3) to form composite fine particles (5) having a double structure,
Then, the base sheet (2) is continuously moved to pass through the electric field region (23), while the composite fine particles (5) are obtained.
Is supplied to the electric field region (23) to be charged unipolarly,
One or two or more fine particle layers (24) in a state where the composite fine particles (5) are regularly arranged by electrostatic force and the entire base sheet (2) is uniformly covered.
Is carried on the base sheet (2) to obtain the fine particle carrying sheet (1).

The invention described in claim 4 is characterized in that, in the invention described in claim 3, the fine particles (4) are functional fine particles.

With the above structure, in the inventions according to claims 1 and 3, the composite fine particles (5), that is, the fine particles (4) are wastefully arranged in high density and orderly on the base sheet (2) by the electrostatic attraction. Without being carried, the function originally possessed by the fine particles (4) is sufficiently exerted.

Further, there is no binder layer formed on the entire surface of the base material for supporting the fine particles on the base material, such as the dipping method or the coating method, and the binder layer (3) only encloses the individual fine particles (4). There is a binder (3
The amount of ´) used is small and the material cost is not incurred accordingly.
The fine particle carrying sheet (1) can be manufactured at low cost.

Further, since there is no binder layer covering the entire surface of the substrate, it is not necessary to make the slurry low in viscosity in order to make the thickness of the binder layer thin and uniform as in the dipping method, and the fine particles per unit area (4 ) Adhesion amount is secured.

Further, since it is not necessary to form the binder layer on the base sheet (2), the base sheet (2) can be immediately carried into the fine particle supporting means (13), and the production efficiency can be improved because there is no binder layer forming work. Will get better. further,
Even when the base sheet (2) has a poor affinity with the binder (3 ′), the binder layer is not formed on the entire surface of the base sheet (2) by coating, so that the material of the base sheet (2) is not selected, and The base sheet (2) of any kind can be used without the need for physical or chemical treatment for imparting affinity, and the versatility becomes great.

In addition, even though the composite fine particles (5) are carried on the base sheet (2) by utilizing electrostatic force, unlike the electrostatic flocking method, the composite fine particles (5) are unipolarly charged. Therefore, the fine particles (4) wrapped in the binder layer (3) are not limited to those having an elongated shape such as the electrostatic flocking method, and have excellent versatility regardless of the type, and The large-scale equipment required for the electrostatic flocking method, electrostatic powder coating method, and physical vapor deposition method is not required, and the cost is low.

Furthermore, the composite fine particles (5) are not charged until they are supplied to the electric field region (23) or are only weakly charged, and at the same time they are supplied to the electric field region (23). That is, since it is strongly charged immediately before being loaded on the base sheet (2), even if there is the composite fine particle (5) not in the electric field region (23), the composite fine particle (5) is not charged, or It is only weakly charged, and there are very few problems such as electrostatic powder coating method in which charged fine particles are sprayed and adhered to the wall surface of the processing chamber, making it difficult to remove. Etc. are easily performed.

In the inventions described in claims 2 and 4, the function of the functional fine particles (4) is effectively exhibited without being hindered.

The invention described in claims 5 to 8 relates to an apparatus for producing a fine particle carrying sheet, of which claim 5 is
In the invention described in (3), the fine particles (4) are wrapped in a binder layer (3) and supplied as composite fine particles (5) having a double structure, and the fine particle supplying means (1).
Base sheet (2) that is adjacent to 2) and moves continuously
And a voltage is applied between the base sheet (2) and the base sheet (2) to continuously pass through the electric field region (23), the fine particle supply means (12) supplies the electric field region (2).
The composite fine particles (5) supplied to 3) are charged to a unipolar polarity, and the charged composite fine particles (5) are arranged in an orderly manner by an electrostatic force, and the entire base sheet (2) is uniformly and densely covered. In this state, it is provided with a fine particle carrying means (13) for carrying one particle or two or more fine particle layers (24) on the base sheet (2) to form the fine particle carrying sheet (1).

With the above construction, in the invention described in claim 5, the structure of the apparatus for obtaining the fine particle carrying sheet (1) is embodied.

The invention according to claim 6 is the same as the invention according to claim 5, wherein the fine particle supplying means (12) comprises a slurry (S) which is a mixed liquid of the fine particles (4) and the binder (3 '). It is characterized in that the fine particles (4) are wrapped with the binder layer (3) by atomization and supplied as the composite fine particles (5) having a double structure.

With the above structure, the invention according to claim 6 embodies the method of forming the composite fine particles (5).

According to a seventh aspect of the present invention, in the sixth aspect of the invention, the fine particle supplying means (12) comprises a slurry (S) which is a mixed liquid of the fine particles (4) and the binder (3 '). It is characterized in that it is configured to be atomized by ultrasonic vibration.

With the above structure, the invention according to claim 7 further embodies the method of forming the composite fine particles (5).

The invention according to claim 8 is the same as the invention according to claim 5, wherein the fine particle carrying means (13) are arranged parallel to the sheet surface of the base sheet (2) at a predetermined interval. An electrode rod (20) and a power source (21) for applying a voltage between the electrode rod (20) and the base sheet (2).
It is characterized by having and.

With the above structure, in the invention described in claim 8, the structure of the fine particle carrying means (13) is embodied.
According to this, since the parallelism is easily obtained and the strong electric field is stably obtained by the rod shape of the electrode rod (20) as compared with the case of the flat plate electrode, the composite fine particles (5) are formed into the base sheet (2). Is accurately supported.

The invention according to claim 9 relates to a honeycomb structure (A), and a corrugated sheet (1a) formed by corrugating the particulate support sheet (1) according to claim 1 or 2. And the flat sheet (1b) of the fine particle carrying sheet (1) are alternately laminated.

With the above construction, the invention according to claim 9 embodies the application construction using the fine particle carrying sheet (1) as a material.

[0038]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

FIG. 2 (a) schematically shows the sectional structure of the fine particle carrying sheet (1) according to the embodiment of the present invention. The fine particle supporting sheet (1) includes a base sheet (2) made of, for example, an aluminum alloy, and functional fine particles (4) having a particle size of 2 to 10 μm are supported on the base sheet (2) to form fine particles. It constitutes the carrying sheet (1). The functional fine particles (4) are contained in the binder layer (3).
In the strict sense, the composite fine particles (5) are contained in the form of double-structured composite fine particles (5), and strictly speaking, the composite fine particles (5) are carried on the base sheet (2).

Examples of the binder constituting the binder layer (3) include inorganic binders such as colloidal silica, organic binders, thermoplastic resin adhesives, thermosetting resin adhesives, water-based or organic solvent-based emulsion adhesives. , Solvent-based adhesives, natural rubber-based adhesives, synthetic rubber-based adhesives, silicone rubber-based adhesives, etc., depending on the type of base sheet (2) and functional fine particles (4) used. Just select it.

The composite fine particles (5) are supplied to the electric field region (23) through which the base sheet (2) continuously passes to be charged unipolarly, which will be described in detail in the production method described later. The base sheet (2) becomes three fine particle layers (24) in a state where they are arranged in order by force and cover the entire base sheet (2) with high density.
It is carried by.

As a result, the composite fine particles (5), that is, the functional fine particles (4) can sufficiently exhibit the function originally possessed by the functional fine particles (4).

As the functional fine particles (4) constituting the composite fine particles (5), various functions such as zeolite, sterilization, fragrance, addition of useful components, etc. exhibiting various functions such as dehumidification, humidification, deodorization, and removal of harmful gases. Examples include microcapsules that exhibit properties, photocatalysts that exhibit various functions such as deodorization, sterilization, antibacterial, insect repellent, and algae proof by oxidation, as well as magnetic materials, high dielectric materials, heat conductors, diamond powder, and phosphorescent materials. To be These can be used not only singly but also in combination. The specific examples of the functional fine particles (4) listed below are merely examples, and the present invention is not limited to these, and may be fine particles capable of exhibiting special functions required in all industrial fields. In particular, it can be used regardless of its type.

The above-mentioned microcapsules are, for example,
Examples include microcapsules of chitosan, which is a natural polysaccharide contained in crab shells and shrimp shells and has antibacterial and antifungal properties, and microcapsules of other active ingredients that act as sterilizers and bacteriostatic agents.

Examples of the photocatalyst include Ti
O ₂ , CdS, CdSe, WO ₃ , Fe ₂ O ₃ , SrT
iO ₃ , ZnO, ZnO ₂ , RuO ₂ , Cs ₃ Sb, I
nAs, InSb, GaAs, etc., and further, a metal such as platinum is carried on the base of these.

Examples of the magnetic material include Cr
O ₂ , Fe ₂ O ₃ , Fe metal powder, barium ferrite powder, Co substitution product and the like.

As the high dielectric material, for example, BaTi is used.
It is a ceramic obtained by adding La, Zr, Sr, etc. to O ₃ .

The heat conductor may be, for example, SiC.
Ceramics such as (silicon carbide).

The diamond powder is, for example, a diamond C powder, whether natural or artificial.

As the above-mentioned phosphor, for example, MAl ₂ O ₄
In the compound represented by, M is a compound composed of at least one metal element selected from the group consisting of calcium, strontium, and barium (in some cases, a plurality of metal elements to which magnesium is further added) as a mother crystal. , To which a predetermined amount of europium as an activator was added in a mol% with respect to the metal element represented by M, and further, a predetermined amount of lansen, cerium, praseodymium, etc. was added as a coactivator in a mol% with respect to the metal element represented by M. Body (see JP-A-7-11250), ZnS: Cu (zinc sulfide-based phosphorescent material), CaS: Bi, CaSrS: Bi, and the like.

Next, an example of a fine particle carrying sheet producing apparatus for producing the fine particle carrying sheet (1) configured as described above will be described with reference to FIG.

As shown in FIG. 1, this apparatus for producing a fine particle carrying sheet has an ultrasonic atomizing device (12) as a fine particle supplying means and a fine particle carrying means provided adjacent to the ultrasonic atomizing apparatus (12). It is roughly classified into a fine particle carrier (13).

The ultrasonic spraying device (12) and the fine particle carrying device (13) are arranged in the middle of the sheet moving direction, and the delivery shaft (1) is provided at the upstream end (the left end in FIG. 1) of the sheet moving direction.
7), a take-up shaft (18) is arranged at the downstream end (the right end in FIG. 1) in the sheet moving direction, and a base sheet (2) is arranged in a roll on the delivery shaft (17). ing. The base sheet (2) is fed by rotating the winding shaft (18), and is continuously carried into the ultrasonic spraying device (12) and the fine particle carrying device (13).

The ultrasonic spraying device (12) comprises a storage tank (19) in which a slurry (S) which is a mixed liquid of the functional fine particles (4) and the binder (3 ') is stored. Ultrasonic vibration is applied to the slurry (S) in (19) to disperse and atomize the slurry (S), whereby each functional fine particle (4) is wrapped in the binder layer (3) and doubled. The composite fine particles (5) having a structure are sprayed from the supply port (19a) and supplied to the electric field region (23) described later.

The fine particle carrying device (13) has an electrode rod (2) which is arranged above the base sheet (2) in parallel with the surface of the sheet at a predetermined interval (for example, 100 mm).
0), a power source (21) is connected to the electrode rod (20), the opposite pole is connected to the base sheet (2), and the base sheet (2) is grounded. Then, a voltage (for example, a voltage) is applied between the electrode rod (20) and the base sheet (2) which is fed from the feeding shaft (17) and continuously moved while being guided by a plurality of guide rolls (22). 5 to 10 kV) is applied to form an electric field. In FIG. 1, the region indicated by reference numeral (23) is the electric field region.

Then, in the process in which the base sheet (2) continuously passes through the electric field region (23), the composite fine particles sprayed from the ultrasonic spraying device (12) and supplied to the electric field region (23). (5) That is, the functional fine particles (4) are unipolarly charged, the charged composite fine particles (5) are arranged in order by electrostatic force, and the entire base sheet (2) is uniformly and densely covered. Then, the base sheet (2) is supported as the three fine particle layers (24) to form the fine particle supporting sheet (1).

A drying chamber (25) is arranged on the downstream side (the right side in FIG. 1) of the particle carrying device (13) in the sheet moving direction, and the base carrying the composite particles (5) in the particle carrying device (13). By introducing the sheet (2) into the drying chamber (25), the binder layer (3) encapsulating the functional fine particles (4) constituting the individual composite fine particles (5) is dried to obtain the composite fine particles (5). That is, the functional fine particles (4) are used as the fine particle carrying sheet (1) carried on the base sheet (2), and the fine particle carrying sheet (1) is taken up by the winding shaft (1).
It is designed to be wound around 8).

Next, the procedure for producing the fine particle carrying sheet (1) by the fine particle carrying sheet producing apparatus configured as described above will be described with reference to FIG.

First, the winding shaft (18) is rotationally driven to feed the base sheet (2) wound around the feeding shaft (17) in a roll at a predetermined speed.
The base sheet (2) is guided by the guide rolls (22) and continuously moves to the downstream side (the right side in FIG. 1) in the sheet moving direction, and passes through the fine particle carrier (13). In the fine particle carrier (13), a power source (21) is turned on to apply a voltage, and an electric field region (23) is formed between the electrode rod (20) and the base sheet (2). Further, in the ultrasonic spraying device (12), the slurry (S) is dispersed by ultrasonic vibration and atomized, and the fine particles (4) are wrapped in a binder layer (3) to form double-structured composite fine particles (5). There is. The composite fine particles (5), that is, the functional fine particles (4), are continuously atomized and supplied from the ultrasonic atomizer (12) to the electric field region (23), and the composite fine particles (5) are supplied. Enters the electric field region (23) and is charged unipolarly.
Therefore, the base sheet (2) has the electric field region (2
In the process of passing through 3), the charged composite fine particles (5) are attracted to the surface of the base sheet (2) by electrostatic force. As a result, the composite fine particles (5), that is, the functional fine particles (4) are lined up in an orderly manner, and the whole base sheet (2) is covered with a high density evenly as a three-layer fine particle layer (24). The fine particle carrying sheet (1) is obtained by being carried by (2) (see FIG. 2A).

Thereafter, the fine particle carrying sheet (1) continuously moves in the drying chamber (25), and individual composite fine particles (5) are obtained.
The binder layer (3) encapsulating the functional fine particles (4) constituting the film is dried, and then the winding shaft (1
It is wound up in 8) and a series of work is completed.

In the fine particle-supporting sheet (1) thus obtained, it is not necessary to support the fine particles on the base material (base sheet) through the binder layer formed on the entire surface of the base sheet by the dipping method or the coating method. The amount of the binder (3 ') constituting the binder layer (3) may be an amount sufficient to wrap the individual functional fine particles (4), and the amount of the used amount is small, so that the material cost is reduced and the fine particles are inexpensively supported. The sheet (1) can be obtained.

Further, there is no binder layer covering the entire surface of the substrate as in the dipping method, and it is not necessary to make the slurry low in viscosity in order to make the layer thickness thin and uniform, so that the functional fine particles ( 4) can be deposited in high density.

Since there is no step of forming the binder layer on the base sheet (2), the base sheet (2) can be efficiently produced by immediately carrying the base sheet (2) into the fine particle carrier (13). You can Further, even when the base sheet (2) has a poor affinity with the binder (3 ′), the binder layer is added to the base sheet (2).
Since it is not necessary to form the entire surface by coating, it is not necessary to select the material of the base sheet (2), and there is no need to perform physical or chemical treatment for imparting affinity, and all kinds of base sheet (2) Can be used and can be highly versatile.

In addition, since the composite fine particles (5) are unipolarly charged and carried on the base sheet (2) by utilizing electrostatic force, the shape of the fine particles such as the electrostatic flocking method of dielectric polarization is limited. It can be used regardless of its type and is more versatile, and it is simple without using large-scale equipment such as electrostatic flocking method, electrostatic powder coating method and physical vapor deposition method. It can be done with a variety of devices, and a huge capital investment can be eliminated.

Furthermore, since the composite fine particles (5) are charged by being supplied to the electric field region (23), the composite fine particles (5) not in the electric field region (23) are not charged or are weakly charged. Because it is only charged,
Adhesion of fine particles to the wall of the processing chamber, such as the electrostatic powder coating method of spraying charged fine particles, can be almost eliminated.
The handling can be facilitated at the time of collection work or cleaning.

Further, since the electrode rod (20) is adopted as one of the electrodes for forming the electric field, the parallelism can be easily obtained and the electrode rod is stable because of the rod shape as compared with the case where the electrode is a flat plate. The strong electric field allows the composite fine particles (5) to be carried on the base sheet (2) with high precision.

The fine particle-carrying sheet (1) manufactured in this manner is a disc-shaped honeycomb rotor as shown in FIG. 3 (a), a rectangular parallelepiped honeycomb core material as shown in FIG. 3 (b), or the like. Is processed into the honeycomb structure (A). As shown in FIG. 3 (c), these honeycomb structures (A) have a corrugated sheet (1 a) formed by corrugating the fine particle carrying sheet (1), and the fine particle carrying sheet (1).
And the flat sheet (1b) are alternately laminated and used for manufacturing an air purifying device, a dehumidifying / humidifying device, various waste water purifying devices, and the like.

In the above embodiment, the composite fine particles (5) were carried on one side of the base sheet (2), but the electrode rod (20) is also arranged below the base sheet (2). The composite fine particles (5) may be carried on both sides of the base sheet (2).

In the above embodiment, an electric field is formed between the base sheet (2) and one of the electrode rods (20) using the base sheet (2) as one of the electrodes. If the ratio is low, an electrode plate may be arranged on the lower surface of the base sheet (2) to form an electric field.

Further, in the above embodiment, the case where the fine particle layer (24) is three layers has been shown, but it may be one layer or two layers depending on the particle size of the functional fine particles (4) and the purpose of use. Alternatively, it may have four or more layers.

Furthermore, in the above-mentioned embodiment, the case where the fine particles have a function has been described, but the present invention can be similarly applied to fine particles having no special function.

[0072]

As described above, according to the inventions of claims 1 to 8, the composite fine particles (5) in which the fine particles (4) such as the functional fine particles are wrapped in the binder layer (3) are used as the base sheet ( 2) is supplied to an electric field region (23) which continuously passes through to be charged unipolarly, arranged in an orderly manner by electrostatic force, and in a state in which the entire base sheet (2) is uniformly covered. Layer or two or more fine particle layers (2
Since it is carried on the base sheet (2) as 4),
When the fine particles (4) are functional fine particles, their functions can be sufficiently exhibited. Furthermore, since there is no binder layer that covers the entire surface of the base sheet by wrapping the individual fine particles (4) in the binder layer (3), such as a dipping method or a coating method, an inexpensive fine particle-carrying sheet (1) does not require material costs. In addition, since it is not necessary to make the slurry have a low viscosity as in the dipping method, the fine particles (4) can be adhered at a high density.
Further, since it is not necessary to form the binder layer on the base sheet (2), the production efficiency can be improved by the amount of the work for forming the binder layer. Further, even if the base sheet (2) has a poor affinity with the binder (3 ′), the binder layer is not formed on the entire surface of the base sheet (2) by coating, so that the material of the base sheet (2) is not selected. Moreover, it is not necessary to perform a physical or chemical treatment for imparting affinity, the base sheet (2) of any kind can be used, and the versatility can be increased. In addition, since the fine particles (4) are charged with unipolarity instead of dielectric polarization, there is no limitation on the particle shape as in the electrostatic flocking method, and the versatility can be increased and the electrostatic flocking can be performed. Method, electrostatic powder coating method, and physical vapor deposition method can be used with inexpensive equipment without making the equipment large. Furthermore, since only the fine particles (4) in the electric field region (23) are charged and the other fine particles (4) are not charged, a troublesome work of removing the fine particles (4) adhering to the inner wall of the processing chamber by electrostatic action. Can be eliminated.

In particular, according to the eighth aspect of the invention, since the electrode rod (20) which is superior in parallelism to the flat plate electrode is used as one electrode, the fine particles (4 ) Can be carried on the base sheet (2) with high precision.

Further, according to the invention of claim 9, the honeycomb structure (A) is produced by using the fine particle carrying sheet (1).
Can be made.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram schematically showing a fine particle carrying sheet manufacturing apparatus according to this embodiment.

FIG. 2A is a diagram schematically showing a cross-sectional structure of a fine particle-carrying sheet according to this embodiment, and FIGS. 2B and 2C are schematic diagrams showing a cross-sectional structure of a conventional fine-particle carrying sheet, respectively. It is a figure.

FIG. 3 (a) is a honeycomb rotor as a honeycomb structure, (b) is a honeycomb core material as a honeycomb structure,
(C) is a1 part in (a) and a2 in (b)
It is an enlarged view of a part.

[Explanation of symbols]

1 Particle support sheet 1a Corrugated sheet 1b flat sheet 2 base sheet 3 Binder layer 4 Functional fine particles 5 Composite fine particles 12 Ultrasonic atomizer (fine particle supply means) 13 Fine particle carrier (fine particle carrier) 20 electrode rod 21 power supply 23 Electric field region 24 Fine particle layer A Honeycomb structure

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP 2001-327917 (JP, A) JP 11-267578 (JP, A) JP 5-87477 (JP, A) JP 60-61022 (JP, A) JP 54-107637 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B32B 1/00-35/00 B05D 1/06

Claims (9)

(57) [Claims] 1. A fine particle carrying sheet (1) in which fine particles (4) are carried on a base sheet (2), wherein the fine particles (4) are wrapped in a binder layer (3) and have a double structure composite. In the form of fine particles (5), the composite fine particles (5) are supplied to the electric field region (23) through which the base sheet (2) continuously passes, and are charged with a unipolar property. One or two or more fine particle layers (24) are arranged on the base sheet (2) and are carried on the base sheet (2) in a state of being lined up and covering the entire base sheet (2) with high density. A fine particle carrying sheet. 2. The fine particle carrying sheet (1) according to claim 1.
2. In the fine particle-carrying sheet, the fine particles (4) are functional fine particles. 3. A method for producing a fine particle carrying sheet (1) for producing a fine particle carrying sheet (1) in which fine particles (4) are carried on a base sheet (2), comprising: adding fine particles (4) to a binder layer (3). ) To form double-structured composite fine particles (5), and then the base sheet (2) is continuously moved to pass through the electric field region (23) while the composite fine particles (5) are added.
Is supplied to the electric field region (23) to be charged unipolarly,
One or two or more fine particle layers (24) in a state where the composite fine particles (5) are regularly arranged by electrostatic force and the entire base sheet (2) is uniformly covered.
A method for producing a fine particle-supporting sheet, characterized in that the fine particle-supporting sheet (1) is obtained by supporting it on a base sheet (2). 4. The fine particle carrying sheet (1) according to claim 3.
In the method for producing a fine particle-supporting sheet, the fine particles (4) are functional fine particles. 5. A fine particle carrying sheet manufacturing apparatus for a fine particle carrying sheet (1) in which fine particles (4) are carried on a base sheet (2), wherein fine particles (4) are wrapped in a binder layer (3) to form a double layer. An electric field is applied by applying a voltage between the fine particle supply means (12) for supplying as the composite fine particles (5) of the structure and the continuously moving base sheet (2) provided adjacent to the fine particle supply means (12). And the base sheet (2) forms the electric field region (2
In the process of continuously passing through 3), the composite fine particles (5) supplied to the electric field region (23) from the fine particle supply means (12) are charged to a single polarity, and the charged composite fine particles (5) are charged.
Particles which are carried on the base sheet (2) as one or more fine particle layers (24) in a state where the particles are arranged in order by electrostatic force and the entire base sheet (2) is uniformly covered. An apparatus for producing a fine particle carrying sheet, comprising: a fine particle carrying means (13) serving as a carrying sheet (1). 6. The apparatus for manufacturing a fine particle carrying sheet according to claim 5, wherein the fine particle supply means (12) atomizes the slurry (S) which is a mixed liquid of the fine particles (4) and the binder (3 ′). 2. A fine particle carrying sheet manufacturing apparatus, characterized in that the fine particles (4) are wrapped in a binder layer (3) and supplied as composite fine particles (5) having a double structure. 7. The apparatus for manufacturing a fine particle carrying sheet according to claim 6, wherein the fine particle supply means (12) uses a ultrasonic wave to shake the slurry (S), which is a mixed liquid of the fine particles (4) and the binder (3 ′). An apparatus for manufacturing a fine particle carrying sheet, which is configured to be atomized. 8. The apparatus for manufacturing a fine particle carrying sheet according to claim 5, wherein the fine particle carrying means (13) is an electrode rod (20) arranged in parallel with the sheet surface of the base sheet (2) at a predetermined interval. ) And a power source (21) for applying a voltage between the electrode rod (20) and the base sheet (2). 9. A corrugated sheet (1a) formed by corrugating the fine particle carrying sheet (1) according to claim 1 and a flat sheet (1b) of the fine particle carrying sheet (1) alternately. A honeycomb structure characterized in that the honeycomb structure is formed by stacking the layers.