JPH10144492A - Conductive electrostatic discharging sheet and accessory using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable attenuation or discharging of static electricity or maintaining thereof by self-discharging static electricity charged with a human body, clothes, and various objects by employing a conductive electric discharge sheet and an accessory using the same. SOLUTION: A sheet is formed by fixing an erected hair 3 consisting of erected hair threads 1 and base cloth hair threads 2 reciprocated therebetween to fix the erected hairs 1. A part that is the erected hair 3 is cut by a blade and formed as a straight hair line. The erected hair threads 1 are made of fiber bundles of the straight hair line together with a conductive fiber, a natural fiber, and/or synthetic fiber. The base cloth threads 2 forming a base cloth is made of a fiber bundle containing a natural fiber and/or synthetic fiber or stranded threads. The conductive fiber is 1 to 30 micrometers in fiber diameter. If the fiber diameter of the conductive fiber is less than 1 micrometer, the fiber is likely to be weakened, and the erected hair 3 is too soft. On the other hand, if it exceeds 30 micrometers, ionization is slow, and stimulus to a skin is strong and is not adequate.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conductive neutralizing sheet and a garment using the same, and more particularly to a conductive material applicable to attenuating or removing static electricity charged from a human body, clothes and other various objects by self-discharge. The present invention relates to a static elimination sheet and a garment using the same.

[0002]

2. Description of the Related Art Static charge is generated in an insulator due to friction between objects, a flow of a liquid, a flow of a powder, and the like, and adsorption of ions by fine particles. For example, when a person walks, static electricity is charged on the human body or clothes from clothes, carpets laid on the floor, floor tiles, and the like. Particularly in recent years, the use ratio of synthetic fibers has been high, and the fibers have been subjected to a surface treatment with a synthetic resin or the like, so that they are more easily charged. For this reason, various troubles such as electric shock, adhesion of dust, and danger of discharge ignition occur.

As a measure for preventing static electricity of these textile products, for example, a pile yarn containing copper and a pile yarn containing aluminum are driven into an antibacterial antistatic fiber sheet (Japanese Patent Laid-Open No. 6-248562). ), Using fibers spun by kneading an organic antistatic agent into various synthetic resins (Japanese Patent Application Laid-Open Nos. 2-207492 and 2-6)
No. 8898).

[0004] However, in the antibacterial antistatic fiber sheet, use of each fiber in which the pile yarn is coated with copper and aluminum or each fiber containing a copper wire and an aluminum wire is described. Sheets made of aluminum-coated fibers are highly consumed in corridors and automobiles where many people pass, and the conductivity of the copper or aluminum surface coat tends to decrease due to peeling or abrasion. Fibers containing copper wire or aluminum wire are unsuitable for sheets and accessories that are highly irritating to human skin and come into contact with the human body. On the other hand, those made of fibers obtained by kneading an organic charged spinning agent into the synthetic resin,
When the insulating property is high and the humidity is reduced, there is a problem that the toner is easily charged when the humidity is lowered, and an antistatic agent is eluted in washing such as washing with water or dry cleaning to reduce the antistatic effect.

[0005] Further, in recent years, with the development of electronic equipment, operating the electronic equipment generates static electricity.
Various antistatic measures have been taken, but these are not always sufficient.

[0006]

DISCLOSURE OF THE INVENTION The present invention solves the above-mentioned problems and provides a conductive material capable of continuously attenuating or removing static electricity charged on the human body, clothes and various objects by self-discharge. An object of the present invention is to provide a static elimination sheet and clothing articles using the same.

[0007]

Means for Solving the Problems The present inventor has conducted intensive studies in view of the above-mentioned problems, and as a result, has found that a conductive sheet comprising a brushed yarn containing an ultrafine conductive monofilament and a base fabric yarn is a straight hairline, The present inventors have found that it is possible to prevent static electricity from being electrostatically charged for a long period of time and have arrived at the present invention.

That is, the conductive static elimination sheet of the present invention comprises:
Conductive monofilaments having a fiber diameter of 1 to 30 μm and natural fibers and / or
Alternatively, the conductive brushed yarn composed of synthetic fibers has a fiber diameter of 1
It is fixed to a base fabric obtained by knitting a conductive base fabric thread consisting of a conductive monofilament of ３０30 μm and a natural fiber and / or a synthetic fiber, and is raised on a straight hair line.

[0009] Also, the garment of the present invention uses the above-mentioned conductive static elimination sheet.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below.

The conductive monofilaments (conductive monofilaments, hereinafter also referred to as conductive fibers) in the present invention include various metals or carbon fibers, among which copper, stainless steel, aluminum, carbon fibers and the like. It is preferable from the viewpoint of low electric resistance and productivity. The fiber diameter is 1
The thickness is preferably from 30 to 30 μm, and more preferably from 10 to 30 μm, and particularly preferably from 10 to 15 μm for stainless fibers. If the fiber diameter is less than 1 μm, the fibers tend to set and the nap is weak, while if it exceeds 30 μm, the ionization of gas molecules due to electrostatic charge is not performed quickly, and especially when it comes into contact with human skin for clothing. Not suitable for increased irritation.

When carbon fiber is used, the sheet may be blackened due to abrasion. Therefore, it is preferable that the fiber be treated in advance.

The natural fibers include wool, cotton yarn and the like. As the synthetic fibers, those made of single fibers such as polyolefins such as polyethylene and polypropylene, polyacrylonitrile, polyester and polyamide are preferable. The fiber diameter of these synthetic fibers is 5 to 20 μm
Are preferred.

The raised yarns forming the raised surface of the static elimination sheet according to the present invention comprise a straight fiber bundle of the conductive fibers and natural fibers and / or synthetic fibers. By using this raised yarn as a fiber bundle, the raised hair can be formed into a straight hair like a brush. The brushed yarns do not need to be in contact with each other with respect to the thickness of one fiber bundle, but are preferably close to each other from the viewpoint of attenuation or removal of static electricity.

[0015] In the raised yarn, the ratio of the conductive fibers to the thickness of one fiber bundle is preferably 10 to 40%, more preferably 10 to 30%. When the ratio of the conductive fiber is less than 10%, the conductivity is insufficient, and the charged molecules are not sufficiently ionized by the static charge of the static electricity to rapidly ionize the gas molecules to attenuate or remove the charge by self-discharge.
On the other hand, if it exceeds 40%, there is no problem in conductivity,
Brushed densely with ultra-fine conductive fibers and natural fibers and / or synthetic fibers to prevent brushing and to prevent loss due to abrasion of the conductive fibers. The above upper limit is preferable in consideration of productivity. The brushed yarn may be a natural fiber or a synthetic fiber singly or appropriately mixed with the conductive fiber depending on the purpose.

[0016] Further, it is preferable that the nap formed from the nap thread is densely napped with a straight nap like a brush.
In particular, it is preferable that the conductive fiber is ultrafine or the fiber has a needle-like tip in order to efficiently attenuate or remove the static electricity by self-discharge.

The base yarn forming the base fabric in the present invention is:
It is made of a fiber bundle or twisted yarn of the conductive fiber and a natural fiber and / or a synthetic fiber. In the base fabric yarn, the ratio of the conductive fibers is 10 to the thickness of one fiber bundle.
It is preferably 20%, more preferably 10 to 15%. When the ratio of the conductive fibers is less than 10%, it is insufficient to self-discharge or remove the accumulated static electricity by ionizing the gas molecules due to the static electricity of the charged static electricity generated between the conductive fibers of the base cloth and the raised fabric. Become. On the other hand, if it exceeds 20%, there is no problem in conductivity, but the potential difference between the brushed yarn becomes small, and the above upper limit is preferable in consideration of the productivity and the attenuation or removal by rapid self-discharge of static electricity. Therefore, when the content of the conductive fibers in the base fabric yarn is smaller than the content of the conductive fibers in the raised yarn within the above range, the potential difference between the base fabric and the raised fabric becomes large, and the static electricity from the raised fabric is increased. This is preferable because attenuation or removal by self-discharge becomes rapid.
Short fibers may be used in combination with natural fibers or synthetic fibers of the base fabric yarn. The above-mentioned raised yarn and base fabric yarn may be dyed according to the intended use.

Next, the conductive neutralizing sheet of the present invention and accessories using the same will be described in detail with reference to the drawings. The drawing shows a schematic view of the conductive static elimination sheet of the present invention and its fiber configuration, and shows an example of its use for apparel. FIG. 1 shows a brush 3 made of the conductive brush 1.
FIG. 3 is a schematic view showing a part in which the base fabric yarn 2 reciprocates to fix the raised yarn 1 and form a sheet. In addition,
The specific knitting of the raised yarn and the base fabric yarn can be performed by knitting with a knitting machine, and then the portion to be raised can be cut with a knife to form a straight hair line. FIG. 2 is a conductive static elimination sheet formed by the base cloth 4 and the naps 3 woven continuously by the above-described method. By such a braided fixation, static electricity can be efficiently attenuated or removed by self-discharge from both sides of the conductive fibers of the raising and the base cloth into the air.

FIGS. 3 and 4 show examples of the use of the conductive static elimination sheet of the present invention as a garment. FIG. 3 shows a bracelet in which a sheet made of brushed 3 and base cloth 4 is used as a rubber core. It is designed to be easily sewn on and wound on the arm when static electricity prevention is required. Also, FIG.
Is an example in which the conductive static elimination sheet of the present invention is sewn to the sleeve point 5 and the chest point 6 of the garment as points of the garment.

As another example of use, a commercially available conductive adhesive is applied to the base cloth of the conductive neutralizing sheet of the present invention, and then a metal foil, for example, a metal foil of copper, stainless steel, aluminum, or the like is applied. A commercially available conductive adhesive may be applied and applied to the edge of a CRT of a television, a knob of a door, or the like to remove static electricity from a charged object and to prevent adhesion of dust and the like.

As described above, the conductive static elimination sheet of the present invention is a gas permeable sheet formed by a base cloth knitted with a base cloth thread containing ultrafine conductive fibers and an electrostatic charge accumulated on an ultrafine brushed thread containing ultrafine conductive fibers. It rapidly ionizes molecules and self-discharges air and water vapor in the air to attenuate or remove accumulated static electricity. In addition, in the case of a garment using a conductive static elimination sheet, it can be easily prevented from being charged at various places by wearing the garment.

[0022]

The present invention will be described in more detail with reference to the following specific examples.

Example 1 A brushed yarn in which 10 ultrafine copper monofilaments having a fiber diameter of 30 μm and polyester monofilaments are bundled so as to be 10th yarn equivalent to cotton yarn count, and the copper fiber is 30% of the thickness of one fiber bundle. When,
A knitting knitting machine is used to knit the two copper ultrafine fibers and a base cloth yarn of 15% copper fiber with respect to the thickness of one fiber bundle obtained by bundling nylon single fibers so as to have a count of 30 corresponding to the cotton yarn count. The resulting portion was cut with a knife and raised into a straight hair line to obtain a conductive neutralizing sheet.

For comparison, similarly, a brushed sheet made of a brushed yarn of the same size and a base fabric yarn containing no copper fiber and a brushed yarn of the same size and a base fabric yarn containing copper fiber having a fiber diameter of 100 μm. And a conductive sheet.

The obtained conductive neutralizing sheet, the brushed sheet and the conductive sheet for comparison were wound around a rubber core and sewn to obtain a bracelet as shown in FIG. Each bracelet was worn on a human body, and was placed on a carpet made of a mixture of acrylic fiber and hair (acrylic fiber / hair = 3/7) at a speed of 70 m / min for 1 minute and 5 minutes in a room at a temperature of 25 ° C. and a relative humidity of 25%. After walking for minutes, the charged voltage of the human body was measured for each. When the bracelet made of the conductive static elimination sheet was worn, the charged voltage after 1 minute was 3.5 kv and after 5 minutes was 3.4 kv. Further, there was no irritation to the skin when worn, and the feeling was good. In the case of a brushed sheet containing no copper fiber, the charged voltage after 1 minute is 7.5 kv.
The charging voltage after 5 minutes was 12.0 kv. In addition, those containing copper fibers having a fiber diameter of 100 μm have a charging potential of 4.5 kv after 1 minute and a charging potential of 4.0 kv after 5 minutes, and furthermore, the skin is irritated when worn, and the Unsuitable for wearing.

Example 2 A commercially available conductive pressure-sensitive adhesive (pressure-sensitive adhesive using a metal fiber or metal powder) was applied to the conductive static elimination sheet of the present invention obtained in Example 1, and dried to obtain a sheet having a width of 20 mm. Length 200m
m, and attached to a square on the edge of a CRT of a television to remove static electricity. As a result, the charged voltage before attaching the conductive static elimination sheet was 4.0 to 4.5 kv, but the charged voltage after sticking square was almost 0 kv and could not be measured with a normal charged meter. Value.

As described above, the apparatus using the conductive static elimination sheet of the present invention can realize a charged voltage of less than 4.0 kv which can eliminate the electric shock to the human body due to the discharge phenomenon. In addition, the feeling is good because ultrafine conductive fibers are used.

[0028]

As described above, the conductive static elimination sheet of the present invention and the garment using the same can efficiently carry out self-discharge by sustaining static electricity charged from the human body, clothes and various objects in the air. In addition, it is possible to prevent electric shock due to electric discharge to the human body and prevent dust and the like from collecting, thereby preventing contamination.

Therefore, the conductive static elimination sheet and the garment of the present invention can be used for various purposes.
Covers for chairs, clothing lining, clothing points, bracelets, other accessories and other accessories, TV C
Suitable for direct contact with human body such as metal band of watch, metal case such as edge of RT, electric equipment such as electronic equipment, door knob, window frame and other furniture, etc. Can also be used on carpets.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing the weaving of the raised yarn and the base fabric yarn of the present invention.

FIG. 2 is a perspective view of the conductive charge eliminating sheet of the present invention.

FIG. 3 is a schematic view of a conductive bale of the present invention.

FIG. 4 is a schematic view of the conductive static elimination sheet of the present invention sewn as a point of clothing.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Brushed yarn 2 ... Base cloth yarn 3 ... Brushed 4 ... Base cloth 5 ... Sleeve point of clothes 6 ... Chest point of clothes

Claims (5)

[Claims] 1. A conductive brushed yarn comprising a conductive single fiber having a fiber diameter of 1 to 30 μm and a natural fiber and / or a synthetic fiber, comprising a conductive single fiber having a fiber diameter of 1 to 30 μm and a natural fiber and / or a natural fiber. Alternatively, a conductive neutralization sheet fixed to a base fabric obtained by knitting a conductive base yarn made of synthetic fibers and raising a straight hair line. 2. The method according to claim 1, wherein the conductive single fiber is copper, stainless steel,
The conductive static eliminating sheet according to claim 1, wherein the sheet is one or more of aluminum or carbon fiber. 3. The napping yarn and the base fabric yarn each comprise 10 to 40% of the conductive single fiber with respect to the thickness of each fiber bundle.
The conductive neutralizing sheet according to claim 1 or 2, wherein the base fabric yarn contains 10 to 20%. 4. The conductive static elimination sheet according to claim 1, wherein the fixing is performed by braiding a raised yarn together with a base cloth. 5. An article of clothing using the conductive charge eliminating sheet according to claim 1.