JP2007303051A - Microorganism-controlling japanese paper cloth carrying ultrafine particle of ferromagnetic ferrite, and microorganism-controlling japanese paper - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable the use of Japanese paper as a mildew-proofing wallpaper, etc., by preventing the adhesion and growth of microorganism on Japanese paper and improving the preservability of the paper and to develop a new use by processing the Japanese paper in the form of strings and weaving the strings to a woven fabric having antibacterial property. <P>SOLUTION: Ultrafine particles of a ferromagnetic ferrite are supported on a Japanese paper sheet or a woven fabric obtained by splitting the Japanese paper to 0.5-5 mm wide and weaving the slit strings. The growth of microorganism is suppressed and the proliferation is inhibited by electric current passing through the microorganism by the action of electromagnetic field even if a microorganism is attached to the Japanese paper or a cloth produced from the Japanese paper. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

The present invention relates to a microbe-controlling Japanese paper and a microbe-controlling Japanese paper fabric carrying an ultrafine-particle ferromagnetic ferrite.

  As is well known, in the case of Japanese paper that is stored for a long time, such as packaging for ordinary households, hospitals, and museums, as well as dolls, works of art, and packaging for Japanese clothes, damage due to discoloration or holes due to microorganisms such as attached fungi are repeated. ing. On the other hand, in order to prevent microorganisms, spray chemicals and antibacterial agents have been actively proposed and used in addition to measures such as drying on insects and ultraviolet rays. There are problems with the environment, effects on the skin and persistence.

Problems to be solved by the invention

Dust and dirt containing microbial nutrients adhere to Japanese paper, and when moderate humidity is applied, microbial growth is likely to occur. Since it is difficult to completely suppress such dust and dirt, it is usually difficult to control microorganisms adhering to Japanese paper.

  Since it is difficult to control microorganisms adhering to Japanese paper in this way, spray-type insecticides and the like are used, but it is also a fact that spray-type insecticides and the like may cause spots on Japanese paper.

Therefore, the object of the present invention is to prevent the occurrence of pollution by using non-polluting ultrafine-particle high-magnetism ferrite and to prevent the generation of microorganisms, so that it can be used for comfortable ordinary homes, hospitals, museums, etc. Another object of the present invention is to realize a woven fabric obtained by cutting the Japanese paper into thin pieces and knitting them into a yarn.

Means for solving the problem

In order to achieve the above object, the present invention employs an ultrafine ferromagnetic ferrite that is harmless and has no side effects as a microorganism growth control agent. The ferrite is an ultrafine particle with a particle size of 5 to 30 mm, and each is a permanent magnet of N and S with large magnetization. When an appropriate amount of this is placed in a storage tank for making Japanese paper, the ferrite is supported. It forms a strong Japanese paper and forms a strong magnetic field in the Japanese paper, and magnetic field lines are generated from this magnetic field.
When microorganisms adhere to the Japanese paper that generates these magnetic lines of force, and the microorganisms move, the magnetic lines of force are cut off. Will be controlled.

The ultrafine ferromagnetic ferrite does not cause pollution to the surroundings even if it is chemically stable and does not cause pollution or environmental problems.

First, the magnetization strength of the ultrafine-particle ferromagnetic ferrite will be described.
FIG. 1 shows a magnetization measurement diagram of calcium zinc ferrite. The strength of magnetization is 26 emu / g.
When converted to Gauss, it is about 1700 Gauss. A strong magnetic field is generated on Japanese paper carrying an appropriate amount of Ca—Zn ferrite.

Magnetic field lines are generated from Japanese paper that forms a strong magnetic field in this way. When microorganisms such as fungi adhere to this Japanese paper and move, the lines of magnetic force are cut off, so a voltage is generated from Faraday's law of electromagnetic induction, and current flows through the microorganisms, suppressing the movement of microorganisms and preventing growth. Reduce the harm caused by microorganisms.

A strong magnetic field was formed from the Japanese paper carrying the ultra-fine ferromagnetic ferrite described above, magnetic field lines were generated, the microorganisms approached and cut the magnetic field lines, and the current flowed to the microorganisms from Faraday's law of electromagnetic induction. FIG. When the current flows through the microorganism, the growth of the microorganism can be suppressed, the proliferation can be prevented, and damage such as spots, discoloration, and worm-eaten states on Japanese paper can be controlled.

FIG. 3 shows an example of Japanese paper carrying Ca—Zn ferrite that generates the strong magnetic field. In FIG. 3, A is a normal Japanese paper not supporting Ca—Zn ferrite, and FIG. 3B is a Japanese paper for controlling microorganisms supporting Ca—Zn ferrite. The amount of Ca—Zn ferrite supported by this Japanese paper is 10 g per m ² .

FIGS. 4A and 4B show a state in which the ultrafine-particle ferromagnetic ferrite of FIGS. 3A and 3B is carried using a scanning electron microscope. In FIG. 4A, since the Ca—Zn ferrite is not supported on Japanese paper, the magnification is 50 times. The photo shows Japanese paper fibers. FIG. 4B shows a magnification of 1000 times, and Ca—Zn ferrite is shown in a black spherical shape. Other than this black spherical body, it is a fiber as in FIG. 4A. It can be seen that this black spherical shape is carried on the fiber.

As shown in FIG. 4B, magnetic lines of force are generated from the spherical Ca—Zn ferrite, and when the microorganisms adhere and cut the magnetic lines of force, current flows to the microorganisms from Faraday's law of electromagnetic induction, and the movement of the microorganisms. Suppresses growth, inhibits growth, and controls microorganisms.

  Each of the above-mentioned test piece of Japanese paper not supporting Ca-Zn ferrite and the test piece of Ca-Zn ferrite supporting Ca-Zn ferrite is attached to the center of the flat plate medium, and a suspension of mold fungi spores on the test piece. FIG. 5A and FIG. 5B show that 1 ml was spread evenly and cultured at 28 ± 2 ° C. for 2 weeks to determine the effect on mold. FIG. 6A is a Japanese paper on which Ca—Zn ferrite is not supported, and FIG. 5B is a Japanese paper on which Ca—Zn ferrite is supported.

  In FIG. 5A and FIG. 5B above, the black hemispherical bodies indicate mold fungi. Compared with FIG. 5A and FIG. 5B, since the number of black hemispheres is larger in FIG. 5A, the growth of mold fungi is increased in the Japanese paper carrying the ultrafine ferromagnetic particles by the action of the electromagnetic field. It can be seen that the fungus is controlled and the fungus is controlled.

As shown in Fig. 5B, when Japanese paper for controlling microorganisms carrying ultra-fine ferromagnetic ferrite is used as wallpaper for ordinary households, hospitals, museums, dolls, Japanese clothes, and art packaging, it can be used as a Japanese paper that can control the harm of microorganisms. it can.

FIG. 6 shows the Japanese paper carrying the above-mentioned ultrafine ferromagnetic ferrite Ca—Zn ferrite cut into a width of 0.5 mm to 5 mm, threaded, and used as a woven fabric. When used for clothes, mattresses, supporters, socks, and the like using this fabric, it can be used in a comfortable environment free from microorganisms.

  The microorganisms include fungi, Escherichia coli, aquatic fungi, athlete's foot fungi, Staphylococcus aureus, and Legionella.

  As a method for producing Japanese paper, manual papermaking and mechanical papermaking are included.

  As a raw material of Japanese paper, it shall contain mulberry, samurai and hemp as well as non-wood fibers such as wood pulp, rayon, bamboo, bagasse and kenaf, other vegetation and firewood.

  In the production of Japanese paper, commonly used auxiliary materials such as a viscosity agent, a sizing agent, a paper strength enhancer, and a dye can be used as long as they do not interfere with the dispersion of the ultrafine ferromagnetic ferrite.

  In addition to internal addition, the loading includes spraying, coating, impregnation, printing, kneading into thermoplastic fibers used in combination with fabrics, and the like.

The invention's effect

  According to the present invention, Japanese paper carrying ultrafine ferromagnetic ferrite is used for wallpaper of general households, hospitals, museums, etc. and dolls, Japanese clothes, art packaging, etc., even if microorganisms adhere to the Japanese paper, Since an electric current flows through the microorganism due to the action of the electromagnetic field, the growth of the microorganism is suppressed and the proliferation is inhibited, so that it is possible to control Japanese paper spots and worm-like holes caused by the microorganism, thereby creating a comfortable living environment.

If the Japanese paper that can control the above microorganisms is cut to a width of 0.5 to 5 mm, and the yarn is made into a woven fabric and used for clothing, mattresses, supporters, socks, etc., odors caused by microorganisms, bed slips, spots, holes on insects It is possible to live a comfortable social life.

It is a magnetization j curve of calcium zinc ferrite. A is an enlarged front view of ferrite. B is an enlarged view of the electromagnetic field. A A photograph of Japanese paper that does not carry ferrite. B is a photograph of Japanese paper carrying ferrite. A It is a 50-times microscope picture of the Japanese paper which does not carry | support a ferrite. B is a 1000 times micrograph of Japanese paper carrying ferrite. A This is a fungus comparative test of Japanese paper that does not carry ferrite. B is a fungus comparative test of Japanese paper carrying ferrite. This is a woven fabric made of Japanese paper carrying ferrite.

Claims (4)

  Microparticles with a particle size of 5 to 30 nm and ultra-fine magnetized ferrite with a large magnetization are placed in a storage tank for the Japanese paper making process and stirred, and suspended to make the Japanese paper. Japanese paper for controlling microorganisms carrying ultrafine ferrite particles   In claim 1, microorganisms adhere to the Japanese paper carrying the ultrafine ferromagnetic ferrite, and when the microorganisms move, the lines of magnetic force generated from the ferrite particles carried on the Japanese paper are cut off, and a voltage is induced from Faraday's law of electromagnetic induction, Japanese paper for controlling microorganisms carrying ultrafine-particle ferromagnetic ferrite, characterized in that an electric current flows to the microorganisms to suppress the growth of the microorganisms and prevent their growth.   In Claim 1 or 2, Japanese paper carrying ultrafine-particle ferromagnetic ferrite is cut into a width of 0.5 mm to 5 mm, and this is made into a thread by using a paper web. Japanese paper fabric for controlling microorganisms carrying ultra-fine ferromagnetic ferrite, characterized by producing clothing and controlling the generation of microorganisms A Japanese paper and a fabric for controlling microorganisms according to claim 1, 2 and 3, wherein the support of the ultrafine ferromagnetic particles is carried out at the stage of Japanese paper or its yarn and fabric.

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