JPH1071198A - Ion antimicrobial tape - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate the need for a power source for ion generation and a high voltage and special electrodes for enhancing ion generation efficiency by sticking two kinds of metals varying in ionization tendency to each other across a plastic film having a good insulating characteristic in-between and using the ions generated at the cut section thereof as an ion source for sterilization. SOLUTION: Foil 1 of aluminum and copper foil 3 which are two kinds of the metals varying in the ionization tendency to each other are stuck to each other across a polyethylene terephthalate(PET) film 2 as the insulator held in-between and, thereafter, the PET film 4 for protection is also stuck to the opposite surface of the aluminum foil 1 and the copper foil 3. This laminate is cut to fine pieces and is formed to a tape form. The tape formed by sticking the metals varying in the ionization tendency to each other via the insulating film, then cutting the film to a prescribed width forms a local battery at the section of this tape and the generated ions have sterilizing power and, therefore, the tape is capable of making an important contribution in imparting sterilizing power to daily articles and industrial articles.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to articles having an antibacterial effect, such as textiles, cosmetics, kitchen utensils, etc., used in daily life, as well as industrial articles such as medical, agricultural, marine and industrial industries. The present invention relates to an antibacterial tape that can be widely applied. In particular, the present invention relates to a thin tape-shaped one which uses the effect of sterilization or sterilization by ions, has a high ion generation efficiency, and is easy to process when applied.

[0002]

2. Description of the Related Art Conventional products using the bactericidal effect of ions include, for example, an ion antibacterial toothbrush having a small battery and a metal electrode for supplying ions, and airborne air generated by a high voltage of 10,000 volts or more. There are air purifiers that use the sterilizing effect of ions. In these cases, a power supply or battery for ion generation is required, or a high voltage for efficiently generating ions is required. The above has been a constraint when applying the sterilizing effect of ions to various articles.

[0003]

SUMMARY OF THE INVENTION An ion generating method which does not require a power supply for generating ions and does not require a high voltage or a special electrode for increasing the efficiency of generating ions.
It is intended to devise a material having a shape that can be easily processed into various articles.

[0004]

A potential difference between metals having different ionization tendencies is used as a power source for ion generation, and the distance between the metals is kept small and uniform to increase ion generation efficiency. Is what you do. As one of the means for realizing the above-mentioned object, the insulating property is good,
Two kinds of metals are bonded together with a plastic film having a thin and uniform thickness interposed therebetween, and ions generated in the cut cross section are used as an ion source for sterilization. The ion generation effect is better as the thickness of the insulating film is thinner, but the area of the ion source is reduced conversely.To solve this problem, use a narrow tape to make as many cuts as possible. Slits, resulting in increased material use efficiency. The thin slit tape is wound, woven, cut strips,
There are many methods and convenient for processing into antibacterial articles such as aligned and pasted. If the opposite surface of the bonded metal is exposed, depending on the processing method, the two types of metal may be electrically short-circuited with each other, and the ion generation effect may be reduced. This phenomenon is prevented. To this end, a plastic film can be applied to the opposite side of the metal so that only the cut surface of the metal surface is exposed. In addition, an adhesive layer may be provided on the article in order to enhance the workability in processing the article.

[0005]

A local battery is formed between metals having different ionization tendencies insulated by a plastic film in air or water of high humidity or in various solutions to generate ions.
Since the thickness of the plastic film can be made very small, the potential gradient between different metals increases, and the ion generation efficiency increases. Ions are generated particularly efficiently in high humidity air or water. The generation of bacteria on or around the tape section is suppressed by the sterilizing action of the generated ions. A high potential gradient also has the effect of keeping small organisms away. Also, the thin slit tape can be easily processed into various articles.

【Example】

First Example An aluminum foil and a copper foil were laminated with a polyethylene terephthalate film (hereinafter referred to as a PET film) interposed therebetween, and then a PET film was also laminated on the opposite side of the aluminum and the copper foil (see FIG. 1). The thickness of the film was 6 μm, the thickness of the aluminum foil was 7 μm, the thickness of the copper foil was 9 μm, and the width of the slit tape was 1 mm. This tape generated a 0.3 volt DC voltage in tap water. A bath mat in which this tape was woven at an appropriate interval generated less mold than a normal mat in which no bath was woven, confirming the sterilizing power of this antibacterial tape.

Second Example An aluminum film was formed on one side of a PET film and a copper film was formed on another side of the PET film by a vacuum evaporation method. Further, PET films were adhered on both sides to form a protective layer of a deposited film of aluminum and copper. As in the first example, a tape was made by slitting it to a width of 1 mm, and the sterilizing power of the tape cross section was confirmed. The same effect as in the first example was confirmed. The workability of the tape was improved in thickness and flexibility compared to the first example.

[0008]

As described above, a tape in which a metal having a different ionization tendency is laminated through an insulating film and then slit to a predetermined width forms a local battery in the cross section of the tape, and the generated ions have a sterilizing power. I understood. Such a tape can be easily processed into articles requiring antibacterial properties, and can greatly contribute to imparting antibacterial power to household articles and industrial articles. Combinations of metals having different ionization tendencies are aluminum / copper and aluminum / copper.
Various combinations such as silver, titanium / gold, etc. are possible. It was also found that the voltage generated between the extremely short electrodes had an effect of keeping small creatures such as mites and chisel away.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a tape of the present invention using a metal foil.

FIG. 2 is a cross-sectional view of the tape of the present invention using a vapor-deposited film.

[Explanation of symbols]

 1 is an aluminum foil 2 is a PET film 3 is a copper foil 4 is a protective PET film 5 is a deposited aluminum film 6 is a deposited copper film

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Makoto Kubo Tokyo Film Processing Co., Ltd., 2-24-6 Sakurashinmachi, Setagaya-ku, Tokyo

Claims (1)

[Claims] 1. An ion antibacterial tape comprising two kinds of metals having different ionization tendencies bonded together with an insulator such as a plastic film interposed therebetween, and cut into small pieces to form a tape.