JPS6322864B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a so-called honeycomb-shaped adhesive member in which adhesiveness is imparted to the inner surface of the honeycomb-shaped member, and more specifically to a honeycomb-shaped dust collector used in an electrostatic precipitator. The present invention relates to a method of providing an adhesive on the inner wall of a honeycomb such as an electrode.

Conventionally, in electrostatic precipitators, there was a method to prevent the collected dust from scattering again by providing an adhesive layer such as mineral oil or ethylene glycol on the surface of the dust collecting electrode.
Dust collecting electrodes using such low-viscosity adhesives have the disadvantage that when a large amount of dust accumulates, they fall off and scatter again due to vibrations or the like.

There are high-viscosity adhesives such as rubber-based adhesives and resin-based adhesives that are difficult to re-splatter even if the amount of accumulated dust increases, but these high-viscosity adhesives have poor fluidity. Therefore, unlike low-viscosity adhesives, it cannot be applied by dipping or spraying, but instead is applied using a blade or roll.

Therefore, such a high-viscosity adhesive cannot be used as is to apply it to a narrow area such as the inner surface of a honeycomb-shaped dust collecting electrode; it must be lowered to a lower viscosity using a diluent before being applied by dipping or spraying. Since the adhesive must be applied by twisting the adhesive, it is troublesome to perform strict masking to prevent the diluent from drying and from adhering the undesirable high-viscosity adhesive to areas other than the required areas.

Generally, an electrostatic precipitator has many voids within the device due to its function, so it is desirable from the viewpoint of transportation costs to assemble disposable dust collecting electrodes, especially in air cleaners for the general public, immediately before use.

However, although it is possible to cut the adhesive member into a predetermined size in advance with the adhesive honeycomb-shaped dust collection electrode, it is difficult to remove the release paper after assembly due to its structure, so it is difficult to remove the release paper after assembly. Electrodes were practically impossible.

The purpose of the present invention is to eliminate the above-mentioned drawbacks of the conventional method, and to provide an adhesive honeycomb-shaped dust collector that has extremely low re-scattering, does not require drying of the diluent or strict masking, is easy to assemble, and is low-cost. An object of the present invention is to provide a method for manufacturing a honeycomb-shaped adhesive member that realizes an electrode.

Next, details of the present invention will be explained based on examples.

Example 1 FIG. 1 is a perspective view of a conductive honeycomb-shaped adhesive member for a dust collection electrode used in an air purifier, manufactured by the manufacturing method of the present invention, and FIG. 2 is a perspective view of the honeycomb-shaped adhesive member. FIG. 2 is a perspective view showing the state in use.

Moreover, FIGS. 3a to 3d are cross-sectional views showing steps of an embodiment of the present invention for manufacturing the honeycomb-shaped adhesive member shown in FIG. 1.

Now, in order to manufacture the honeycomb-shaped adhesive member shown in Figure 1, gypsum is selected as a material that forms a porous body after molding and exhibits absorbency for liquid substances, and conductive carbon black is added to it. The hole 2 with a circular cross section is prepared by adding water to the hole 2 as shown in Figure 3a.
A honeycomb-shaped base material 1 consisting of a plurality of pieces is molded and dried.

On the other hand, each constituent dextrin of a water-soluble adhesive with the following composition: 100 Polyvinyl alcohol 10 Glycerin 5 Calcium chloride 10 Water 100 minutes, water, glycerin, and calcium chloride were mixed and dissolved. Spraying a liquid component onto the inner surfaces of the holes 2 constituting the honeycomb of the honeycomb-shaped base material 1,
After this is absorbed into the base material 1 as shown in FIG. When the mixed fine powder is sprinkled, the solid component adheres to the inner surface of the hole 2 in a layered manner as shown in FIG.
As shown in FIG. 3d, a water-soluble adhesive layer 14 is formed on the inner surface of the hole 2.

Example 2 In order to manufacture the honeycomb-shaped adhesive member shown in FIG. 1 by the same process as in Example 1, 30 parts of conductive carbon black was added to 100 parts of pulp obtained by beating waste paper.
15 parts of acetic acid beer emulsion were added thereto, mixed with some water, and dried to form a honeycomb-shaped substrate 1 as shown in FIG. 3a.

On the other hand, a liquid masticated rubber with a conductive adhesive having the following composition...10 parts rosin...20 coumaron indene resin...10 conductive carbon black...30 mineral oil...15 polyisobutylene...5 components After diluting mineral oil and polyisobutylene with volatile oil, it is sprayed onto the inner surface of the pores 2 constituting the honeycomb of the base material 1, and is sufficiently absorbed into the base material 1 as shown in FIG. 3b to form a wet state. The powdery solid component of the adhesive is prepared by thoroughly kneading a tackifier consisting of masticated rubber, rosin, coumaron indene resin, and conductive carbon black and pulverizing the mixture at low temperature. Figure 3 c.
As shown in FIG.

Next, when these are heated in an oven at 80°C, the liquid component in the base material 1 is absorbed by the powdery solid component, causing it to swell and dissolve, and form an inner surface of the hole 2 as shown in FIG. 3d. An adhesive layer 14 is formed.

In the method for manufacturing a honeycomb-shaped adhesive member of the present invention described in the above-mentioned Examples 1 and 2, before the solid component constituting the adhesive is spread on the inner surface of the honeycomb, the liquid component of the adhesive is Although added to the honeycomb-shaped member, the liquid component in the present invention may be added after the solid component is spread on the inner surface of the honeycomb. Examples thereof will be described next.

Embodiment 3 FIGS. 4a to 4e are diagrams showing cross sections of each member in each step of another embodiment of the present invention.

According to these figures, a sheet-like absorbent base material 1
As shown in FIG. 4a, the surface of 7 has an adhesive portion 18 when a plurality of base materials are assembled into a honeycomb shape.
The following water-soluble adhesive was applied and dried, leaving behind.

Dextrin...100 Polyvinyl methyl ether/maleic anhydride polymer...10 Polyvinyl methyl ether...60 Water...100 In this way, the non-adhesive solid component layer 16 of the adhesive is spread at predetermined positions on both sides. The plurality of sheet-like substrates 17 thus formed are bent as shown in FIG. 4b, and the adhesive portions 18, 18 are further bonded with an adhesive to form a honeycomb-like member as shown in FIG. 4c. When assembled, the liquid component of the adhesive consisting of 80% water, 20% ethylene glycol, and 5% lithium chloride is sprayed onto the inner surface of the honeycomb of the honeycomb-shaped member as shown in FIG. 4d. It is absorbed into the solid component and swells and dissolves it to form the solid component in Figure 4e.
An adhesive layer 14 is formed on the inner surface of the honeycomb as shown in FIG.

Example 4 In Example 3, a solid consisting of masticated rubber as a tackifying substance...100 rosin ester...50 and conductive carbon black...100 as a filler for imparting conductivity to the adhesive The above-mentioned solid components of the adhesive, which are composed of the liquid components consisting of components and mineral oil...15 and light oil...5, are sufficiently kneaded and then applied to an absorbent sheet-like base material 17 by a hot-melt method. After spreading and cooling on predetermined parts on both sides of the base material, a honeycomb-shaped member shown in FIG. 4c is formed by a plurality of the base materials,
After the honeycomb member was sufficiently impregnated with the liquid component of the adhesive, it was heated to form an adhesive layer 14 inside the honeycomb to obtain an adhesive honeycomb member.

As shown in the above embodiments, the method for manufacturing a honeycomb-shaped adhesive member of the present invention is such that when providing an adhesive on the inner surface of a honeycomb-shaped member, a solid component constituting the adhesive is spread on the inner surface of the honeycomb. After or before adding a liquid component constituting the adhesive to the honeycomb member, an adhesive layer is formed on the inner surface of the honeycomb.

As the adhesive of the present invention, in addition to those shown in the above-mentioned examples, any adhesive composed of a solid component and a liquid component, each of which is non-adhesive, can be used, and the solid component is non-adhesive. It may be composed only of the imparting substance, but it may also contain various fillers.

In addition, in the present invention, if the solid component that comes into contact with the liquid component on the honeycomb inner surface of the honeycomb-shaped member does not quickly swell and dissolve at room temperature, heating may be performed as described in Example 2 and Example 4 to cause the solid component to swell and dissolve. Dissolution may be promoted.

In addition, when the adhesive is a water-soluble adhesive, water retention agents such as glycerin and ethylene glycol are used to prevent drying, and as shown in Examples 1 and 3, calcium chloride, lithium chloride, etc. A deliquescent substance can also be included.

The honeycomb of the honeycomb-shaped member in the present invention may be a honeycomb with a circular cross section as shown in Figs. 1 to 3, or a honeycomb with a hexagonal cross section as shown in Fig. 4. Not limited by.

Next, the effects of the present invention will be described.

In the present invention, when providing a highly adhesive high-viscosity adhesive on the inner surface of a honeycomb-shaped member, the adhesive is handled separately into two components: a non-adhesive solid component and a liquid component. It's on,
Since the adhesiveness is developed at the final stage, there is no need to worry about the adhesiveness of the material during the manufacturing process.

In addition, in the present invention, there is no need to use a diluent for the adhesive, so there is no need for a drying process, and since the material used in the manufacturing process is non-adhesive, strict masking is not required when applying an adhesive. The process is simple because it is not required.

Furthermore, when assembling sheet-like members to make an adhesive honeycomb member, in the present invention, adhesiveness is only developed by adding a non-adhesive component at the final stage of the process, so release paper is required during the process. Therefore, the present invention enables a substantially prefabricated adhesive honeycomb-shaped dust collection electrode at a low cost.

As explained above, the present invention eliminates the drawbacks of the conventional methods, eliminates the need for drying of the diluent and strict masking, is easy to assemble, and uses a low-cost high-viscosity adhesive. The present invention provides a method for manufacturing a honeycomb-shaped adhesive member that realizes a shaped dust-collecting electrode.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a conductive honeycomb-shaped adhesive member for a dust collecting electrode used in an air purifier, manufactured by the manufacturing method of the present invention, and Fig. 2 shows its state in use. FIG. FIG. 3 is a diagram for explaining one embodiment of the present invention, and FIG. 4 is a diagram for explaining another embodiment of the present invention. 1... Absorbent honeycomb base material, 2... Holes, 3...
...Honeycomb member, 4...Discharge electrode, 5...Discharge electrode member, 6...Vent hole, 7...Connection part, 8...
Honeycomb-shaped adhesive member, 9... Locking portion, 10... Inflow side opening, 11... Liquid component, 12... Projecting end, 13... High voltage terminal, 14... Adhesive layer, 15
... Dust collection electrode member, 16 ... Solid component layer, 17 ...
...Absorbent base material, 18...Adhesive part.

Claims (1)

[Scope of Claims] 1. A method for forming a high-viscosity adhesive layer comprising a solid component and a liquid component on the inner surface of a honeycomb-shaped member, wherein either one of the solid component and the liquid component is applied to the honeycomb-shaped member. A method for manufacturing a honeycomb-shaped adhesive member, characterized in that after spreading, the other one is added to form a high-viscosity adhesive layer on the inner surface of the honeycomb. 2. Claim 1, wherein after a plasticizer or solvent is absorbed into a base material formed of an absorbent material in a honeycomb shape, a powdered tackifying substance is sprayed and adhered to the inner surface of the honeycomb of the base material. A method for manufacturing a honeycomb-shaped adhesive member. 3 A honeycomb-shaped member formed from a sheet-like base material made by spreading and solidifying a fluid or liquid tackifying substance,
The method for manufacturing a honeycomb-shaped adhesive member according to claim 1, wherein a plasticizer or a solvent of the tackifying substance is added to form an adhesive layer on the inner surface of the honeycomb. 4. A patent claim in which a liquid component constituting the adhesive is added to the inner surface of the honeycomb after or before a solid component constituting the adhesive is spread, and an adhesive layer is formed on the inner surface of the honeycomb by heating. A method for producing a honeycomb-shaped adhesive member according to item 1.