JPH0848602A - Antistatic insect repellent sheet - Google Patents

Abstract

(57) [Abstract] [Purpose] Combined with excellent static elimination and insect repellent effects, it is possible to solve the problems caused by static electricity, the occurrence of mites, and the problems caused by breeding all at once, and it also has excellent antibacterial properties. hand,
(EN) Provided is an antistatic insect repellent sheet which prevents discoloration of a sheet and generation of an offensive odor due to the growth of microorganisms and prevents the antistatic effect of the antistatic sheet from being hindered by the growth of microorganisms. [Structure] An antistatic insect sheet 11 in which pile yarns 13 are driven into a base fabric 12, wherein the base fabric 12 and the pile yarns 13 contain conductive fibers 16 and an insect-repellent tree extract The insect-repellent resin layer 18 including the microcapsules 17 enclosed in capsules having micropores is the base cloth 1
2 It is provided on the back side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a carpet laid in a room, a chair mat for operating a computer, a floor mat laid at a doorway of a room, an entrance mat, an opening door in an elevator or in an elevator hall. The present invention relates to an antistatic insect repellent sheet applied to a floor mat to be laid, a mat to be laid indoors such as an automobile, a train, an airplane, a carpet, a wall material and the like. More specifically, the present invention relates to an antistatic insect sheet that has both an excellent static elimination effect and an insect repellent effect and is capable of comprehensively solving an obstacle caused by static electricity and an obstacle caused by the generation and reproduction of microorganisms and mites.

[0002]

2. Description of the Related Art Conventionally, the problems to be solved by the invention
As an antistatic sheet, the applicant of the present application filed Japanese Patent Application Laid-Open No. 2
There is one described in Japanese Patent No. 267893. As shown in FIG. 8, this sheet 1 is made of paper by adding conductive short fibers, and is provided with a discharge paper 2 in which a part of the conductive short fibers is projected from the paper surface. The static electricity charged on the human body was quickly absorbed by the paper 2 and discharged in the air.

However, the above-mentioned antistatic sheet is used in front of a carpet laid in a room, a chair mat for operating a computer, a floor mat laid at the entrance and exit of a room, an entrance mat, and an opening / closing door in an elevator or an elevator hall. Floor mats to be laid, or mats and carpets to be laid indoors in cars, trains, airplanes, etc.
When used as a wall material, etc., mites are likely to occur in a place kept at an appropriate temperature and humidity, which may cause discomfort to the human body or carry a special illness such as allergies. There was a problem.

Under these circumstances, it has been attempted to spray or apply a miticide on the sheet or to inject the miticide against the inside of the sheet with respect to the occurrence of mites. However, in all cases, the effect is temporary, and the effect disappears with the passage of time or by cleaning, and there is a problem that the effect cannot be maintained for a long period of time.

Further, in a place where the temperature and humidity are kept, microorganisms are easily proliferated along with the generation of mites, and the sheet is discolored or a bad odor is generated, which tends to be an unsanitary state. . In addition, there is also a problem that propagation of microorganisms inhibits the effect of removing static electricity inherent in the antistatic sheet.

Under these circumstances, attempts have been made to impart antibacterial properties to antistatic sheets that remove static electricity. As means for imparting antibacterial properties to the sheet, Shokai Kai 6
As shown in No. 0-171440, there is a method in which an antibacterial acrylic synthetic fiber or a fiber containing an antibacterial agent such as a halogenated bisphenol is used as a constituent fiber of the sheet. or,
As disclosed in JP-A-60-234633, there is also a method of applying a resin containing an antibacterial and antifungal agent onto the surface of the constituent fibers of the pile yarn that is driven into the sheet.

However, when such a means for imparting antibacterial property is applied to an antistatic sheet for removing static electricity, the sheet can be provided with antibacterial property, but the surface of the sheet is covered with resin or antibacterial fiber. Therefore, there is a problem that the static elimination effect for removing static electricity of the sheet is reduced or disappears. Further, as in the case of covering the sheet surface with a resin, in order to obtain one antibacterial antistatic sheet, the process of imparting antibacterial property and the process of imparting the static elimination effect have to be carried out separately. , The antibacterial antistatic sheet was very expensive.

The present invention has been made in view of the above circumstances, and has an excellent static elimination effect and insect repellent effect.
In addition to being able to solve problems caused by static electricity and the occurrence of mites and problems caused by reproduction at once, it has excellent antibacterial properties and prevents discoloration of sheets due to the growth of microorganisms and the generation of bad odors. It is an object of the present invention to provide an antistatic insect repellent sheet that prevents the antistatic effect of the antistatic sheet from being hindered.

[0009]

In order to achieve the above object, the invention according to claim 1 is an antistatic insect-proof sheet in which pile yarns are driven into a base cloth. The yarn includes conductive fibers, and the insect-repellent resin layer containing the microcapsules in which the extract of insect-repellent tree is enclosed in a capsule having micropores is provided on the back surface of the base cloth. The antistatic insect repellent sheet was used as the gist.

The invention of claim 2 has as its gist an antistatic insect repellent sheet characterized in that the extract is a liquid extracted from moon peach.

A third aspect of the present invention has as its gist an antistatic insect repellent sheet characterized in that a breathable backing layer is provided on the back surface of the insect repellent resin layer.

The antistatic insect repellent sheet of the present invention will be described in more detail below. As shown in FIG. 1, the antistatic insect repellent sheet 11 of the present invention is one in which a pile thread 13 is driven into a base cloth 12. The base fabric is a non-woven fabric, paper, woven fabric or knitted fabric having fibers such as polyethylene fiber, polypropylene fiber, polyester fiber, acrylic fiber and nylon fiber as constituent fibers. As the constituent fibers of the base cloth, polyolefin fibers such as polyethylene fibers and polypropylene fibers are preferable because they are inexpensive and do not generate harmful gas to human body or environment at the time of incineration or fire. Conductive fibers are contained in the constituent fibers of the base cloth, which imparts conductivity to the antistatic insect repellent sheet, thereby providing the sheet with an earth cord. By connecting, a static electricity removing path can be easily formed from the human body to the seat and from the seat to the grounded object such as the floor, the ground, or the vehicle body.

As the form containing the conductive fibers, the conductive fibers are mixed-spun together with the constituent fibers so that the conductive fibers are dispersed in the base cloth, and the binder made of polyethylene resin or the like is provided on the surface of the base cloth. The conductive fiber is applied on the binder with the air flow, and the conductive fiber is adhered to the surface of the base cloth via the binder, or the conductive fiber is dispersed in the base cloth, and the base cloth is dispersed. Examples thereof include those having conductive fibers attached to the surface via a binder.

As the conductive fibers, metal fibers such as stainless steel fibers and aluminum fibers, fibers obtained by plating metal such as copper, nickel and aluminum on the surface of synthetic fibers such as polyethylene and polypropylene, metal powder and conductive compound powder are used. Mixed fiber, carbon fiber,
Alternatively, a fiber obtained by mixing the above fibers can be used, and these conductive fibers are contained in the base fabric alone or in a state of mixing a plurality of types.

The basis weight of the base cloth is preferably one having strength and elongation such that the pile thread is not easily damaged when the pile thread is driven, and 100 to 200 g / m ² is preferable.
Further, the content of the conductive fibers in the base fabric is not particularly limited and is arbitrary, but if the content of these is too large, the strength of the base fabric is lowered, and moreover, the content of the conductive fibers becomes high. The decision may be made as appropriate in consideration of the intended use and usage pattern.

Further, the base cloth may contain a natural insect-repellent fiber together with the above-mentioned conductive fibers so as to have an insect-repellent effect. The natural insect-repellent fiber is a plant fiber obtained from insect-repellent trees such as moon peach (also known as sannin), linden, yellow bud, cypress, cedar, chrysanthemum, paulownia, and pine. These natural insect repellent fibers have excellent insect repellent effect and antibacterial effect, and insect pests such as mites, blemishes, fleas, and ants, or microorganisms, contact with these fibers, or insect repellent scattered from these fibers. It is designed to be exterminated by touching the ingredients. Among these natural insect-repellent fibers, peach peach and linden banana require decades of long time for the cypress and cedar, also known as insect-repellent trees, to return to their original environment once they have been felled. It is preferable that it can be transplanted with a strain and has a property of easily breeding, as compared with the case where it cannot be transplanted to Escherichia coli, and that its use is less likely to lead to the destruction of the global environment. Since natural insect-repellent fibers have a strong irritating odor, and some types are harmful to the human body when they come into direct contact, a resin coating 15 is applied to the surface of the base fabric 12 to prevent direct contact. Good.

Further, the natural insect repellent fiber may contain an insecticide. In this case, the natural insect-repellent fiber has a strong insecticidal function together with the natural insect-repellent fiber due to the insecticide contained in the fiber, so that more effective removal of harmful insects can be achieved. It is desirable that the insecticide has a repellent effect or an insecticidal effect against harmful insects, especially mites, is difficult to dissolve in water, and does not easily expire due to contact with air. For example, phosphorus-based and pyrethroid-based insecticides (acaricides) that have been widely used in the past, insecticides (acaricides) containing iodinated formal as a main component disclosed in JP-A-61-122205, Insecticide (acaricide) containing the compound having benzyl benzoate and an aliphatic hydrocarbon as the main chain disclosed in JP-A-61-91103, JP-A-61-143.
Other insecticides such as benzyl salicylate, phenyl benzoate, phenyl salicylate, dimethyl phthalate, ethyl phthalate, octyl phthalate, dioctyl phthalate, diallyl phthalate and other phthalates disclosed in Japanese Patent No. A tick agent) is preferable. When these insecticides are contained in natural insect-repellent fibers, the insecticides are dispersed in a dispersion medium, and the fibrous or powdered natural insect-repellent material is dipped in the dispersion to adhere the insecticide to the fiber or powder surface. Included.

The pile yarn 13 driven into the base cloth 12 is made by spinning fibers such as polyethylene fibers, polypropylene fibers, polyester fibers, acrylic fibers and nylon fibers into a predetermined thickness. This penetrates to the back surface side of the base cloth 12 and is punched into a substantially U-shape. As the constituent fibers of the pile yarn,
Polyolefin fibers, such as polyethylene fibers and polypropylene fibers, are the same as the base fabric, and are preferable because they are inexpensive and do not generate harmful gas to human body or environment at the time of incineration or fire. In addition, the pile yarn 13 also contains the conductive fiber 16, and the static electricity charged on the human body is not absorbed by the pile yarn 1.
It is absorbed by the conductive fibers (not shown) contained in the base fabric 12 through the conductive fibers 16 of No. 3. In addition, the pile thread 13 can also have a natural insect repellent fiber in the same manner as the base cloth 12 to have an insect repellent effect. Further, a natural insect repellent fiber may contain an insecticide for the purpose of more effective removal of harmful insects. Since natural insect-repellent fibers have a strong irritating odor, and some kinds are harmful to the human body when they come into direct contact with each other, the natural insect-repellent fibers are piled up when the pile yarn 13 contains the natural insect-repellent fibers. It is necessary to take into consideration that the thread 13 exists inside the thread 13 or the content thereof is reduced.

An insect-repellent resin layer 18, which is a feature of the present invention, is provided on the back surface of the base cloth 12. As shown in Figure 1,
The insect-repellent resin layer 18 is a resin layer disposed on the back side of the base fabric 12 in which the pile yarn 13 is driven in to prevent the pile yarn 13 from coming off. The insect-repellent resin layer 18 includes microcapsules 17. . As shown in FIG. 3, the microcapsule 17 is a micro container made of a polymeric material such as urea formalin resin and having a particle size of 5 to 15 μm, and micropores 19 are formed in the shell wall of the capsule 17. Has been done.
And, the moon peach (also known as sannin), the thread Basho, and the yellow sprouts, which are enclosed inside through the microscopic holes 19 in the shell wall of the capsule 17,
The extract 20 from the leaves, stems, roots, and bark of insect repellent trees such as cypress, cedar, chrysanthemum, paulownia, and pine is gradually leached with time.

The insect-repellent resin layer 18 shown in FIGS. 1 and 2 shows a mode in which the microcapsules 17 are adhered to the surface of a resin film via a binder. The insect-repellent component diffuses to the pile yarn 13 side or the back side. The resin film shown in the figure has micropores 21, and the insect repellent component from the microcapsules 17 diffuses to the back surface side through the micropores 21.
If the microcapsules 17 are bonded to both sides of the insect-controlling resin layer 18 with a binder, it is not always necessary to use a film having fine pores, and a non-porous film may be used.

As shown in FIG. 4, a microporous film having gas permeability is used as the insect-controlling resin layer 18 as in FIGS. 1 and 2, and the microporous film is prepared by dispersing microcapsules together with a binder solution. The microcapsules 17 are fixed in the micropores 21 of the microporous membrane with a binder by immersing the microcapsules 17 in a dispersion liquid and drying the microcapsules 17 to form a capsule-internal insect-control resin layer 18. Then, the insect repellent component from the capsule 17 diffuses through the fine holes 21 of the insect repellent resin layer 18 toward the pile yarn 13 side or the back side of the sheet 11. Since the microcapsule 17 used in this case fixes the microcapsules 17 in the micropores 21 with a binder, the diameter of the micropores 21 is larger than that of the microporous membranes of FIGS. 1 and 2. . It should be noted that the insect-preventing resin layer 18 of the capsule-incorporated type is used during the rolling process of the resin film.
The thing produced by throwing in the microcapsule frozen at 20 degreeC--30 degreeC, and making it contain in the inside can also be used.

The insect-repellent resin layer 18 contains microcapsules on the surface or inside of a preformed film, and as shown in FIGS.
It is also possible to adopt a mode in which the capsule 17 is mixed with a coating agent applied to the back surface to prevent the pile yarn 13 from coming off.

Further, as shown in FIG. 2, FIG. 4 and FIG.
A backing layer 14 may be provided on the back surface of the insect-controlling resin layer 18 in order to impart functions such as heat insulation, cushioning, and displacement prevention to the sheet 11. This backing layer 1
In addition to functions such as heat insulating properties, cushioning properties, and displacement prevention properties, 4 is provided with breathability so that the insect repellent component from the insect repellent resin layer 18 can diffuse to the lower surface side of the sheet. Specific examples include foamed resin layers, cloths, non-woven fabrics, knitted fabrics, and paper. As shown in FIGS. 2, 4, and 6, a foamed resin layer having a vent hole 23 is provided on the back surface of the insect-proof resin layer 18 as the backing layer 14. In addition, when the backing layer 14 is provided on the back surface of the insect-proof resin layer 18,
Even if the insect repellent component from the microcapsule is in direct contact, even if it is harmful, the front surface of the insect repellent will be covered, which is preferable in that it can be prevented from being directly touched during handling.

Antistatic insect repellent sheet 1 constructed as described above
In No. 1, static electricity charged on the human body is generated by the pile thread 13
It is led to the base cloth 12 through the ground and further grounded to the ground, the vehicle body, the floor surface or the like through an earth cord or the like. In addition, in this antistatic insect repellent sheet 11, the insect repellent action of the extract 20 leached from the microcapsules 17 contained in the insect repellent resin layer 18 provided on the back surface of the base cloth 12 attracts harmful insects to the sheet 11. Moreover, the pests attached to the sheet 11 can be completely killed. In addition, since the extract 20 of the insect-repellent resin layer 18 leaches out little by little through the micropores 19 of the microcapsules 17, the insect-repellent effect is not lost at one time, and the insect-repellent effect is maintained for a long time. There is.

In addition, the antistatic insect repellent sheet of the present invention, which includes, as the conductive fiber, a fiber plated with a metal such as copper or aluminum, or a fiber mixed with a metal powder such as copper or aluminum. However, since these metals have conductivity and antibacterial properties, they suppress the growth of microorganisms adhering to the sheet, prevent discoloration of the sheet, and the generation of foul odors. It has the effect of preventing the inhibition of sex.

[0026]

【Example】

Example 1 Carbon fiber and natural insect-repellent fiber obtained from moon peach were added to polypropylene fiber, and the fibers were mixed and entangled to bond the fibers to each other to prepare a base fabric. As shown in FIGS. 1 and 3, a coating layer 15 made of polyethylene resin was provided on the surface of the base cloth 12. On the other hand, a pile 13 in which a plurality of polypropylene fibers were bundled, and a conductive fiber 16 formed by plating copper on the surface of the yarn was wound was produced, and the pile 13 was hammered into the base cloth 12 in a predetermined volume.

Next, the microcapsules 17 in which the extract liquid 20 extracted from the leaves and stems of moon peach are enclosed in a capsule having a shell wall having micropores 19 are formed on the surface of the polyethylene film 18 having micropores 21 based on polyethylene. The resin film 18 was adhered via a binder, and the resin film 18 was adhered to the back surface of the base cloth 12 so that the side to which the microcapsules 17 were adhered was the base cloth 12 side.

Thereafter, a backing layer 14 made of foamed polyurethane resin and having air permeability was formed on the back side of the base cloth 12. The obtained antistatic insect repellent sheet is 0.50m x 0.74m =
It was cut into a size of 0.37 m ² and used as a test sample.
The peripheral edge of the sheet was overlocked with an overlocking thread containing a copper-plated conductive fiber.

The electrification voltage of the human body is measured when the antistatic insect repellent sheet of the above example is used. Measuring device: As shown in FIG. 7, an insulating material 31 is laid on an aluminum floor 30, a polyamide carpet 32 is further laid on this, and a chair 33 and an antistatic insect sheet 11 are placed on the carpet 32.
A ground cord (not shown) was connected to the periphery of the antistatic insect repellent sheet 11 so that the floor surface could be grounded.

The person 34 sits on the chair 33 and puts his / her feet on the seat 11. Rub the back 10 times and the buttocks on the chair 33. The static electricity charged on the human body at this time is transferred to the conducting wire 35 and the insulating rod 36.
It is led to an electric potential measuring device 38 through the aluminum plate 37 attached to the electric power measuring device 38, and the electric potential of the human body is measured by this electric potential measuring device 38. The temperature at the time of measurement was 20 ° C. and the humidity was 20%.

As a result of measuring the electrification voltage of the human body by the above-mentioned device, the insect-proof mat could realize the electrification voltage of less than 3.0 kv, which can completely eliminate the electric shock shock to the human body due to the discharge phenomenon. .

When the antistatic insect repellent sheet used in the above experiment was allowed to stand for 1 month under the conditions of a temperature of 35 ° C. and a humidity of 30%, neither sheet had mold nor odor. Further, when an antistatic insect sheet having the same structure as that used in the above experiment was placed in a closed container and dust mites were put therein and left standing for 24 hours, all the sheets had a mortality rate of mites of 100%. .

[0033]

According to the present invention, the above-mentioned structure is provided.
In the antistatic insect repellent sheet described, by the insect repellent action of the extract leaching from the microcapsules contained in the insect repellent resin layer provided on the back surface of the base cloth, mites, swollen on the sheet,
It does not attract harmful insects such as fleas and ants, and can completely kill ticks, blemishes, fleas, ants, etc. attached to the sheet. Moreover, since the extract of the insect repellent resin layer is gradually leached through the micropores of the microcapsules, the insect repellent effect is not lost at one time, and the insect repellent effect is maintained for a long time. Further, in this antistatic insect repellent sheet, since the conductive cloth is contained in the base cloth and the pile, it has an excellent static elimination effect.

In particular, when conductive fibers contained in the base cloth and pile yarn are fibers plated with a metal such as copper or aluminum, or fibers mixed with a metal powder such as copper or aluminum, these metals are used. Since it has antibacterial properties as well as conductivity, with the insect repellent action of the extract from the microcapsules, it suppresses the growth of microorganisms adhering to the sheet, prevents discoloration of the sheet, the occurrence of malodor, and by the growth of microorganisms It has an effect of preventing the antistatic property of the seat from being impaired.

In the antistatic insect repellent sheet according to the second aspect, since the extraction liquid is a liquid extracted from moon peach, it has an excellent insect repellent effect, antibacterial effect, and antifungal effect. Moreover, compared with the fact that Tsukitomo, which is also known as insect-proof trees, takes decades before it returns to its original environment once it is cut down, and it cannot be easily transplanted. There is no fear that its use will lead to the destruction of the global environment because it can be transplanted in a strain and easily propagates.

In the antistatic insect control sheet according to the third aspect, a breathable backing layer is provided on the back surface of the insect control resin layer, and the sheet is provided with functions such as heat insulation, cushioning and slip prevention. Moreover, even if the insect repellent component from the insect repellent resin layer comes into direct contact with the harmful insect repellent component, the front surface of the harmful insect repellent is covered with the insect repellent component.

[Brief description of drawings]

FIG. 1 is an enlarged sectional view showing a main part of an antistatic insect repellent sheet of the present invention.

FIG. 2 is an enlarged cross-sectional view showing a main part of another embodiment of the antistatic insect repellent sheet of the present invention.

FIG. 3 is an enlarged sectional view showing a microcapsule.

FIG. 4 is a perspective view showing another embodiment of the insect-repellent resin layer.

FIG. 5 is an enlarged cross-sectional view showing a main part of another embodiment of the antistatic insect repellent sheet of the present invention.

FIG. 6 is an enlarged cross-sectional view showing a main part of still another embodiment of the antistatic insect repellent sheet of the present invention.

FIG. 7 is a schematic diagram showing a measuring device for measuring the electrification voltage of a human body using the antistatic insect sheet of the present invention.

FIG. 8 is an enlarged cross-sectional view showing a conventional antistatic sheet.

[Explanation of symbols]

 12 ... Base cloth 13 ... Pile yarn 14 ... Backing layer 16 ... Conductive fiber 17 ... Microcapsule 18 ... Insect repellent resin layer 19 ... Micropores 20 ... Extraction liquid

Continuation of the front page (51) Int.Cl. ⁶ Identification number Office reference number FI technical display location B32B 27/18 F 8413-4F // A47G 27/02 C B 102 (72) Inventor Yoshiko Yamada Hashima-gun, Gifu Prefecture 51, Yurakucho, Kasamatsucho

Claims (3)

[Claims] 1. An antistatic insect repellent sheet in which pile yarns are driven into a base fabric, wherein the base fabric and the pile yarns contain conductive fibers, and the extract of insect repellent wood has micropores. An antistatic insect repellent sheet, wherein an insect repellent resin layer containing microcapsules encapsulated in the capsule is provided on the back surface of the base fabric. 2. The antistatic insect repellent sheet according to claim 1, wherein the extracted liquid is a liquid extracted from moon peach. 3. The antistatic insect repellent sheet according to claim 1, wherein a breathable backing layer is provided on the back surface of the insect repellent resin layer.