JP2022145414A - air purification material - Google Patents

Abstract

To provide an air purification material that utilizes antibacterial and antivirus action of copper capable of manufacturing at a lower cost more than ever.SOLUTION: Shavings generated when machining copper materials are stored inside a breathable net. The shavings can be spiral or flake-like or granular shavings generated when machining copper materials. These shavings were compressed into compression moldings and placed inside a breathable net or placed inside a breathable net without compression. A stainless steel net or a cloth bag can be used as the breathable net.SELECTED DRAWING: Figure 6

Description

TECHNICAL FIELD The present invention relates to an indoor air purification material that utilizes the antibacterial and antiviral action of copper.

It has long been known that copper has antibacterial and antiviral effects. The mechanism is thought to be that copper ions perforate the envelope membrane of the virus and that free radicals produced by copper ions degrade genetic material. Also, according to a research team at the National Institutes of Health (NHI) in the United States, the new coronavirus can survive for 72 hours on plastic and stainless steel surfaces, and 24 hours on cardboard, but on copper surfaces. It is said that it is 4 hours, and it has been confirmed that copper has an antiviral effect against the new coronavirus.

Materials utilizing such antibacterial and antiviral effects have also been proposed in the past, and Patent Document 1 describes dispersing very fine copper alloy powder with a particle size of 1 nm to 1 μm on the surface of an article. It is Further, Patent Document 2 describes an antibacterial fabric using composite fibers containing copper alloy yarns. Patent Document 3 discloses an antibacterial composition in which copper powder is mixed with portland cement.

However, in order to increase the surface area of these conventional antibacterial/antiviral materials, copper is processed into fine powders or fine fibers, which causes the problem of high manufacturing costs.

JP 2019-65375 A JP 2019-143272 A JP 2006-249041 A

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to solve the above-described conventional problems and to provide an air purifying material utilizing the antibacterial and antiviral action of copper, which can be manufactured at a lower cost than before.

The inventor of the present invention is in the business of processing copper products, and focused on a large amount of shavings generated when a copper material is machined using a lathe, a milling machine, or the like. The shavings are in the form of fine spirals, flakes, or granules, and in the case of spirals, most of the shavings have a spiral diameter of about 1 to 10 mm. These shavings have been disposed of as waste until now, but I came up with the idea that it would be possible to manufacture an air purifying material using copper's antibacterial and antiviral properties at a very low cost.

The present invention has been made based on the above findings, and is characterized in that shavings generated when machining a copper material are contained in a breathable net.

The shavings may be helical, flake-like, or granular shavings generated when a copper material is machined. These shavings can be compacted and compacted and placed inside a breathable net, or can be placed inside a breathable net without compression.

The air purifying material of the present invention can be manufactured at extremely low cost because it uses shavings generated when cutting copper material, which has conventionally been disposed of as waste, as a raw material. The shavings are fine spirals or flakes or granules and therefore have a large surface area. When the shavings are formed into a compression-molded body, the surface area per unit volume can be further increased, and the shavings can be entangled with each other to form a constant shape. Furthermore, by storing these chips in a breathable net, scattering of the chips is prevented while allowing air to circulate, and fine copper pieces do not scatter even when installed indoors.

The air purification material of the present invention can be used by attaching a hanging string to a net and hanging it indoors, or placing it on a saucer and placing it indoors. Contact with the surface of copper material shavings can reduce their activity. In addition, since copper has an anti-mold effect and a deodorant function, it can suppress the mold that is generated in the room and deodorize the room.

It is an external view of shavings. FIG. 4 is an external view showing a mass of spiral shavings; 1 is an external view of a compression molded body; FIG. 1 is an external view showing a first embodiment; FIG. It is an external view showing a second embodiment. It is an outline view showing a 3rd embodiment.

Embodiments of the present invention are described below.
Shavings 10 generated when a copper material is machined by a machine tool are also called shavings and have various shapes. It has finer grains. In particular, the shavings 10 generated when cutting a copper material with a lathe or milling machine are in the shape of a fine spiral, and although they vary depending on the cutting conditions, the width is about 1 to 10 mm, the diameter of the spiral is about 1 to 10 mm, and the thickness is about 1 to 10 mm. The thickness is about several micrometers to several tens of micrometers. The copper material used in the present invention may be pure copper or a copper alloy, and may be, for example, a copper alloy containing a small amount of zirconium or tungsten used for welding tips. Additive elements such as zirconium and tungsten do not have antibacterial/antiviral effects, but they do not inhibit the antibacterial/antiviral effects of copper.

Assuming that a cubic copper material with a side of 1 cm is used as shavings with a thickness of 10 μm, the surface area of the copper material is 6 cm ² . However, since the shavings are sliced into 1000 pieces, the surface area is 2000 cm ² ignoring the end faces, which is about 333 times larger. Thus, the surface area of the shavings becomes very large compared to the surface area of the copper material, increasing the contact area with the air. Moreover, since the shape of the space formed inside the spiral or flake-like shavings 10 is complicated and intricate, it is possible to reliably capture bacteria and viruses floating in the air on the copper surface like a mask. can. Therefore, the effect of reducing the activity of bacteria and viruses floating in the air is also increased.

Moreover, since such shavings 10 are continuous over a considerable length, unlike copper powder and copper fibers, they do not scatter in the air and are not accidentally inhaled. Copper is a safe metal that is also used in pots and frying pans, so even if an infant accidentally touches or licks it, it will not harm the human body.

The shavings 10 collected from the machine tool are in a tangled state as shown in FIG. Therefore, in the first embodiment, this is processed into a compression-molded body 11 as shown in FIG. This processing can be easily performed by putting shavings 10 into the inside of the mold and pressing. In FIG. 3, the spherical compression-molded body 11 is processed, but its shape may be a rectangular parallelepiped, a plate-like body, or the like. As a result, the spiral shavings 10 are entangled with each other and plastically deformed to maintain a constant shape.

It is preferable that the press pressure at this time is such that the spiral chips adhere to each other while maintaining their shape as chips. It is not preferable because it reduces air permeability and impairs air permeability. Therefore, it is preferable that the compression ratio is about 1/3 to 2/3.

As shown in FIG. 4, according to the present invention, the compression-molded body 11 is further housed in a net 12 to provide an air purification material with enhanced safety and handleability. As the net 12, it is preferable to use a stainless steel net which is excellent in durability, corrosion resistance and strength. However, the material of the net 12 is not necessarily limited to stainless steel, and may be made of high-strength resin or cloth. The opening of the net 12 can be appropriately set so as not to hinder the air circulation and prevent the tips of the chips 10 from flying out.

In the first embodiment shown in FIG. 4, a hanging string 13 is attached to a net 12 so that the air purifying material can be hung from the ceiling or the like in the room. By hanging this air purifying material in an air channel such as a window or a vent, bacteria and viruses floating in the air can be brought into contact with the copper surface, and their activity can be reduced. Also, instead of hanging, a plurality of compression-molded bodies 11 can be housed in a net 12 and placed on a desk as in the second embodiment shown in FIG. As the net 12, punching metal having a large opening ratio may be used.

In a third embodiment shown in FIG. 6, the shavings 10 are housed inside a breathable net without being compressed. The net of this embodiment is an air-permeable cloth bag 14, and the opening is closed with a cord 15. - 特許庁Since the shavings 10 are not compressed in this embodiment, fine shavings 10 may leak out if the opening of the net is large. Therefore, it is preferable to keep the opening of the net small. The air purifying material of the third embodiment can also bring bacteria and viruses floating in the air into contact with the surface of copper shavings having a large surface area to reduce their activity.

In the third embodiment, the cloth bag 14 is put on the saucer 16 and placed in the room. If the cloth bag 14 and the saucer 16 are decorated, they can be used as an air purification material that also serves as an interior decoration. It is also possible to use the mouth string 15 to hang it.

As described above, the air purifying material of the present invention uses scraps of copper materials that have been disposed of as waste so far, so the manufacturing cost is low and it has excellent antibacterial and antiviral effects. and antifungal and deodorant effects can be obtained. In addition, since it uses copper, which is safe for the human body, it has many advantages such as no adverse effects on the human body and safe even if children accidentally touch it.

10 Chips 11 Compression molding 12 Net 13 Hanging string 14 Cloth bag 15 Mouth string 16 Receptacle

Claims (4)

An air purifying material characterized by storing shavings generated when a copper material is machined inside a breathable net. 2. The air purifying material according to claim 1, wherein said shavings are helical, flake-like or granular shavings generated when a copper material is machined. 3. The air purifying material according to claim 1, wherein the compression-molded body obtained by compressing the shavings is housed inside an air-permeable net. 3. The air purifying material according to claim 1, wherein said shavings are stored inside a breathable net without being compressed.

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