JPH01299625A - Deodorizing filter - Google Patents

Abstract

PURPOSE:To improve the deodorizing effect and to reduce the pressure loss by exposing the carrier contg. oxide powder deodorant in the atmosphere contg. active seeds to break high molecular coating film, and forming air passages between filter layers formed by carrier. CONSTITUTION:The thick filter layer 2 is formed with the carrier 2b contg. oxide powder deodorant 2a, which is fixed on the base material 1 of sheet shape. In this case, the carrier 2b is made, for instance, of a spongy tissue to keep the gas permeability of the filter layer itself, and is exposed in the atmosphere contg. active seeds before or after the filter layer 2 is formed in order to break the high molecular film coating the powder deodorant. And, the filter layer 2 is formed in a projected line shape to enlarge the area which is brought into contact with the flowing gas, and the projected filter layers are formed in parallel on the base material 1 to make concave shaped flowing gas passage 3 so as to prevent the increase of pressure loss due to the deterioration of gas permeability.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a deodorizing filter in which a powdery deodorizing agent is contained in a carrier and this carrier is fixed to a sheet-like substrate.

<Prior art> Activated carbon and zeolite are well known as conventional powder deodorizers, but these deodorizers are usually housed inside a breathable exterior and placed in refrigerators, shoe boxes, etc. be.

Recently, oxide-based fine powder deodorizers 1, for example, fine powder deodorizers containing titanium dioxide and zinc oxide as main ingredients, have been developed. In addition to deodorizing, zinc oxide in the ingredients is thought to chemically adsorb acidic gases, and titanium dioxide is thought to physically adsorb alkaline gases, and is particularly good at adsorbing ammonia and hydrogen sulfide.

As such a powder deodorizer, there is a product name TZ deodorizer sold by Titanium Industries Co., Ltd., and this TZ deodorizer is
It is obtained by mixing an aqueous solution of a water-soluble titanium compound and a water-soluble zinc compound with an alkaline aqueous solution, and drying the resulting precipitate.

This TZ deodorizer has an excellent deodorizing effect on chess, and since it is in the form of a fine powder, it can be easily used by incorporating it into paper, thread, or foam materials such as sponges. In order to incorporate a deodorizing agent into a carrier such as paper, thread or foam material, the powdered deodorizing agent mentioned above is mixed into the raw material of the carrier, and the deodorizing agent is added to the carrier at the same time as the carrier is manufactured. A method of coercion is being adopted.

The powdered deodorizing agent-containing carrier produced in this manner can be used in a variety of ways, but its use as a thick filter layer is of particular interest.

When using a phase material as this filter layer, it is necessary to improve air permeability to reduce pressure loss. For example, when using thread as a carrier, it is recommended to cut and entangle the threads to form a cotton-like composition. desirable.

<Problems to be Solved by the Invention> 1- As mentioned above, when incorporating a powdered deodorizing agent into a carrier, if this deodorizing agent is mixed into the carrier raw material, the distribution of the powdered deodorizing agent in the finished product will be affected. In addition to being uniform, the manufacturing process is simple and the product cost is low.However, on the other hand, most of the powdered deodorizers contained in the carrier are coated with polymers that make up the raw materials of the carrier. Since the deodorizing agent is encapsulated in the odor component, the opportunity for the contained deodorizing agent to come into direct contact with odor components is reduced, resulting in a problem that the deodorizing effect is not good.

Furthermore, as mentioned above, when using a carrier as a filter layer, it is necessary to improve the air permeability of the filter layer itself. If this is done, the air permeability of the filter layer will deteriorate, resulting in a problem of increased pressure loss.

Means for Solving the Problems> In the present invention, a carrier 2b containing an oxide powder deodorizer 2a forms a thick filter layer 2 and is fixed to L of a sheet-like base material 1.

This filter layer 2 is formed in the shape of a protrusion, and the base material l
A concave air passage 3 is formed between adjacent filter layers 2 .

In order to maintain the air permeability of the filter layer 2 itself, the carrier 2b is composed, for example, in a deflated state, and is deodorized in powder form by being exposed to an active species atmosphere before or after the formation of the filter layer 2. The polymer film covering the agent 2a is destroyed.

It is desirable to cover the filter layer 2 with a sheet-like covering material 4 from the side opposite to the base material 1, and this covering material 4 is adhered to the base material 1 in the air passage 3 portion between the filters R2. .

The base material 1 and the covering material 4 are preferably made of at least the covering material, and preferably both, of breathable materials, so that the circulating gas can be diffused from the ventilation path 3 through the filter layer 2 to the outside. Ru.

(2) Instead of the covering material 4 mentioned above, a case 5 made of a hard porous plate may be attached to the filter layer 2, and in this case, the case 5 is used as reinforcing means.

At least two filter layers 2 are arranged side by side on the base material, and the base material l on which the filter layers 2 are arranged side by side in this way can be wound into a roll, or by stacking several layers. It is also possible to construct a stacked body in which a plurality of filter layers 2 are arranged.

Effect> In the deodorizing filter of the present invention, the carrier is exposed to the atmosphere in which active species are present and its surface is destroyed, so the polymer coating covering the powdered deodorizing agent is The more the particles are exposed to the outside air, the more their film properties are destroyed, and therefore the chance of direct contact with odor components increases.

Furthermore, in a certain filter, the filter layers are arranged alternately with the ventilation passages, so the air permeability of the entire deodorizing filter is maintained well, and the pressure loss of the circulating gas can be extremely reduced. I can do it.

Embodiment Example FIG. 1 is a perspective view showing a part of the filter of the present invention, in which protruding filter layers 2 are formed in parallel on a sheet-like base material 1. A concave air passage 3 is formed between the layers 2.

A sheet-like covering material 4 is superimposed on the two-legged filter layer 2, and this covering material 4 is adhered to the base material 1 at the portion of the ventilation passage 3.

The base material 1 may be selected depending on the purpose of use of the filter of the present invention, and may be a thick material such as a hard board, a soft sheet material, or a perforated board, or a f'li W material such as a nonwoven fabric, a woven fabric, or a knitted fabric. It can be used.

In the embodiment, a thin sponge sheet made of vinyl chloride is used for high frequency welding of the covering material 4, and this sponge sheet has air permeability.

The filter layer 2 is made of a carrier 2b containing an oxide powder deodorizer 2a, and in the example, the TZ
It is made by intertwining nylon threads containing a deodorant into a cotton-like structure.

The above-mentioned TZ deodorizing agent is mixed in advance into the raw material of nylon thread, and by cutting the nylon thread produced from this raw material into a predetermined length and entangling them, a cotton-like carrier containing the TZ deodorizing agent is produced.

Alternatively, it may be mixed into the nylon chips that are in a molten state during melt spinning.

In addition to the above embodiments, the carrier 2b may be made of synthetic fibers such as acrylic, polyester, or polypropylene, yarn materials made of recycled fibers such as rayon, or semi-synthetic fibers such as acetate, cotton materials, nonwoven fabrics, etc. In addition to this, it is also possible to use a sponge sheet material, for example, by winding it.

The carrier 2b is exposed to an atmosphere containing active species before or after forming the filter layer 2, thereby destroying the film layer property on the carrier surface.

In the example, after the nylon thread serving as the carrier 2b is shaped into cotton and fixed between the base material 1 and the covering material 4, it is exposed to an atmosphere in the presence of ozone, thereby finely etching the surface of the thread. By doing so, the film covering the powdered deodorizer is destroyed.

To expose the carrier 2b to an atmosphere containing ozone, 1. For example, the ozone extraction tube from an ozone generator is applied to the filter of the present invention and the ozone is gradually transferred over the filter layer 2, or the ozone extraction tube is communicated with the ozone extraction tube. The filter of the present invention may be left in a container for a predetermined period of time, and the oxidizing action of ozone will roughen the surface of the carrier 2b and break the film covering the powdered deodorizer 2a, as shown in FIG. It will be done.

At this time, the deodorizer is also subjected to the oxidizing effect of ozone, but since the deodorizer of the filter of the present invention is originally an oxide, there is no deterioration in performance due to ozone.

In addition to ozone, the active species mentioned above include ions, radicals,
Electrons, atoms, laser light, radiation, especially ionizing radiation 1
Exposure to an atmosphere in which these active species exist means that the carrier 2b is irradiated with the active species as a beam or shower, or that the carrier 2b is placed in an atmosphere filled with the active species. This means that the energy possessed by these active species acts physically and chemically on the carrier, which melts, evaporates, oxidizes, and erodes the polymer of the film that covers the powdered deodorizer, resulting in the formation of a film. will be finely etched, and the film properties will be destroyed.

In order to create an atmosphere in which active species exist in this way, it is necessary to select the active species, control their energy,
Furthermore, it is desirable that the source of active species can be scanned over the carrier 2b.

As such means, techniques such as ion etching, corona discharge in the atmosphere, plasma discharge, electron beam processing, laser processing, etc. can be used.

The filter layer 2 is formed by polymerizing the carrier layer 2' and the covering material 4 on the L of the base material 1, as shown in FIG. 3A, and forming the air passages 3 by pressing with a mold as shown in FIG. 3B. It is also possible to form protrusions in parallel toward the back. In this case, if the base material 1 and the covering material 4 are made of a sponge sheet made of vinyl chloride, and the carrier 2b is made of nylon thread, the carrier layer 2 At the same time, the covering material 4 of the portion of the ventilation passage 3 is attached to the base material l by high frequency welding means.''The shape of the two-leg filter layer 2 is formed in a straight line as shown in FIG. However, if the filter layer 2 is formed in a curved shape as shown in Fig. 4, the contact area of the filter layer 2 with the circulating gas can be increased, and as shown in Fig. 5, the ventilation path can be formed. By changing the cross-sectional area of the filter layer 3, a vortex is generated in the flowing gas, and the contact with the filter layer 2 can be changed.

Furthermore, the filter layer 2 may be arranged in a staggered manner with respect to the flow direction a of the circulating gas, as shown in FIG. It is captured in the filter layer 2, and deodorization and filtration are performed satisfactorily.

Such a configuration can also be made by connecting a plurality of deodorizing filters divided by the chain lines in Figure 6.

From a practical point of view, it is desirable to have a one-piece structure in which a large number of filter layers 2 are provided in a staggered manner on one base material 1 as in the embodiment.

The L liquid distribution covering material 4 can be made of a thick material such as a nonwoven fabric, a woven fabric, a knitted fabric, etc., or a porous sheet material, like the base material L, and can also be made of a material different from the base material 1. You can also select and use.

Furthermore, the covering material 4 is not necessarily necessary; for example, if the carrier of the filter layer 2 is a self-shape-retaining material such as a sponge sheet, or even if the carrier is a thread material, it may be necessary to bundle it. This can be omitted in the case where the filter layer 2 is fixed on the base material l, or in the case where the filter layer 2 is covered and closed with a case 5 made of a hard perforated plate as shown in FIG.

Materials that can be used for such a case 5 include metals such as aluminum, sintered porous bodies, and synthetic resins.

When bonding the covering material 4 and case 5 described in F to the base material L, it is convenient to use high-frequency welding as in the above embodiment, but other methods include ultrasonic welding, sewing, welding, and bonding using adhesives. The following means can be used depending on the material of the covering material 4 and the case 5.

In the deodorizing filter of the present invention, the base material 1 is made of a hard material, and a cover plate 6 is bonded to the base material 1 and the row f of the filter layer 2 to form a corrugated paper structure, as shown in FIG. In this way, it can be used as a packaging material, a buffer board, or a wall material.

In the case of this embodiment, it is desirable that one or both of the cover plate 6 and the base material l have a breathable structure, and for this purpose, the cover plate 6 is provided with through holes 6a in this embodiment. It is transparent.

Moreover, in the deodorizing filter of the present invention, the base material 1 can be made of a flexible sheet material and can be wound into a roll shape as shown in FIG. It is desirable that the inner thigh filter layer 2 be configured so as to be adjacent to each other in the radial direction.

Moreover, the deodorizing filter of the present invention can also be made into a stacked structure in which a plurality of filter layers 2 are crotched, as shown in Fig. 1θ.

In this case, the base material 1 may be made of a hard or soft material, and the exterior body 7 may be used to maintain the stacked structure.

In such a stacked structure, if the exterior body 7, the base material 1, and the filter layer 2 are configured to have cushioning properties,
By compressing and releasing the exterior body 7 at t, the internal volume is expanded and contracted to create a so-called breathing effect π.

<Effects of the Invention> Since the deodorizing filter of the present invention is as described above, it is possible to deodorize the powdered deodorizing agent 2a contained in the carrier 2b by directly bringing it into contact with the odor components of the circulating gas, for example, air. Since the filter layers 2 are arranged side by side through the ventilation passages 3, there is an effect that a bait that reduces the pressure loss of the fluid pressure can be produced.

Moreover, since the deodorizing filter of the present invention has a ventilation passage 3, a panel material structure using the filter layer 2 as a reinforcing rib as shown in FIG. As shown in the rolled roll-like structure and FIG. 1θ, the base material 1 can be formed into a stacked structure in which the base material 1 is stacked in multiple layers, which has the advantage that it can be used for many purposes.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing a part of the deodorizing filter of the present invention, Fig. 2 is an enlarged vertical sectional view of a part of the carrier of the above filter, and Figs. 3 A and B show an example of the manufacturing process of the above filter. 4 to 6 are plan views showing the shape of the filter layer of the above filter, FIG. 7 is a vertical sectional view showing an example of the above filter layer, and FIGS. 8 to 6 are schematic explanatory diagrams shown in stages. FIG. 10 is a partial perspective view showing other embodiments of the filter of the present invention. In the figure, 1 is a base material, 2 is a filter layer, 2a is a powdered deodorizer, 2b is a carrier, 3 is an air passage, and 4 is a coating material.

Claims (9)

[Claims] (1) Creating a ridge-shaped filter layer using a carrier containing an oxide-based powder deodorizing agent and having the polymer film covering the powdered deodorizing agent destroyed by being exposed to an atmosphere in the presence of active species; A deodorizing filter characterized in that the above filter layers are arranged in parallel on a sheet-like base material, and a concave air passage is interposed between the filter layers. (2) The deodorizing filter according to claim 1, wherein the base material is configured to have air permeability. (3) A sheet-like breathable covering material is polymerized on the filter layer, and this covering material is placed in the air passage portion and bonded to the base material. The deodorizing filter according to item 1. (4) The deodorizing filter according to claim 1, wherein the filter layer is covered with a hard porous case. (5) The deodorizing filter according to claim 1, further comprising a cover plate parallel to the base material provided on the filter layer. (6) The deodorizing filter according to claim 1, wherein the base material is made of a flexible material, and the base material is wound into a roll to encapsulate the filter layer. (7) Claim 1, characterized in that the base material on which the filter layers are arranged in parallel is stacked in multiple stages to form a stacked structure.
Deodorizing filter as described in section. (8) The deodorizing filter according to claim 1, wherein the filter layer is formed in a curved shape. (9) The deodorizing filter according to claim 1, wherein the filter layers are arranged in a staggered manner with respect to the flow direction of the circulating gas.