JPH069322A - Moth-proofing sheet - Google Patents

Abstract

PURPOSE:To suppress the lowering of the moth-proofing power according to the evaporation of component, prevent the influence of insecticidal component on man and beast and prolong the effective life of a moth-proofing sheet. CONSTITUTION:The moth-proofing sheet 31 has a moth-proofing layer 33 containing a moth-proofing component on a surface of a substrate sheet 32. The moth-proofing layer 33 is formed by attaching a moth-proofing material 8 composed of fine particles of a solid moth-proofing material having moth- proofing effect on the surface of the substrate sheet 32 at a prescribed density. The particulate moth-proofing material 8 is detachably attached to the surface of the substrate 32 and fine particles having diameter smaller than the distance between the hairs on the body of the vermin to be controlled are included in the particulate moth-proofing material 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an insect repellent sheet having a sheet-like base material and an insect repellent layer having an insect repellent component formed on the surface thereof.

[0002]

2. Description of the Related Art In a conventional insect repellent sheet of this type,
Since the insecticidal substance used for insect repellent is a liquid or a gas, it has been practiced to impregnate the insecticidal substance into a sheet-shaped base material and hold it.

By the way, in such a conventional insect repellent sheet, the insect repellent substance impregnated into the base material has an insect repellent function by evaporating into the installed space at a concentration higher than a predetermined level. Since the amount of residual insecticidal substance is reduced by the evaporation of the insecticidal substance associated with the exertion of the insecticidal function, the insecticidal function declines.Therefore, a relatively short effective period is generally set for this type of conventional insecticidal sheet. There is.

Against this background, there has been proposed a liquid insecticidal substance which is microencapsulated and adhered to the surface of a base material with an adhesive (see, for example, Japanese Utility Model Publication No. 4-4109).

[0005]

As a result of earnest research on the essential problems of the conventional insect repellent sheet, the present inventor has adopted an insecticidal mechanism different from that of the conventional insect repellent sheet. This led to the idea that the effective period of the insect repellent sheet can be extended.

That is, the present invention provides an insect repellent sheet which is less dependent on the evaporation of components, and
The purpose of the present invention is to prolong the effective period of the insect repellent sheet without the influence of insecticidal components on humans and livestock.

[0007]

In order to achieve this object, the invention according to claim 1 is such that the surface of a sheet-shaped substrate is
In an insect repellent sheet having an insect repellent layer having an insect repellent component, an insect repellent material comprising fine particles of an insect repellent material, which is a solid substance having an insect repellent effect, is attached to the surface of the base material at a required density to form the insect repellent layer. In addition, the finely divided insect repellent is releasably attached to the surface of the base material, and the finely divided insect repellent has fine particles having a particle diameter smaller than the hair spacing of the insect pests to be insect repellent. It is characterized in that it is contained.

[0008]

According to the invention as set forth in claim 1, in the insect repellent sheet, in the insect repellent layer on the surface of the base material, a fine particulate insect repellent material made of a solid substance having an insect repellent effect can be detached on the surface of the sheet member. Since the finely divided insect repellent material contains fine particles with a particle size smaller than the hair interval of the insect pests to be insect repellent, the insect repellent material adheres to the body surface of the insect pest without being hindered by the body hair of the insect pest. The insect repellent can surely kill the pest by contacting the body surface with the pest.

Since the insect repellent material for the insect repellent layer causes death of the insect pest by contacting the body surface with the insect pest,
Like a conventional insect repellent sheet, it can exhibit a sufficient insecticidal effect without transpiration at a high concentration in the space where the insect repellent component is installed, and it does not affect humans due to the evaporated insect repellent component. The effective period can be extended.

[0010]

EXAMPLES Next, examples will be described. In the following, first, an outline of each insecticidal mechanism basically expected in the present application will be described with reference to FIGS. 3 to 5, and then the insect repellent sheet of the examples. The manufacturing method and the structure of the insect repellent sheet will be described in detail.

According to the research conducted by the inventor of the present invention regarding the insecticidal mechanism, it is considered that they are caused by the combined functioning of the following three mechanisms, which will be explained below.

First, the first mechanism will be described with reference to FIG.

FIG. 3 is a schematic plan view of the body surface of the pest, where 1 is the pest, 2 is the skin on the body surface of the pest, 3 is the hair of the pest, and 41, 42, 43, 44 are powders, for example. It is an insect repellent material made of zeolite.

The pest 1 takes in oxygen into the body through the sluice or the skin 2, and discharges carbon dioxide to the outside of the body directly through the skin 2.

A plurality of body hairs 3 are formed in a scattered manner on the skin 2 which discharges carbon dioxide gas in this way.

The body hairs 3 are formed at predetermined positions depending on the type of the pests 1, and the distance between the body hairs 3 is different. However, in consideration of various pests. If it is standardized as a standard, the arrangement of the body hairs 3 on the skin 2 of the pest 1 is as shown in FIG. 1, and the spacing dimension P of each body hair 3 is assumed to be uniform for simplification of the following description.

Although the insect repellent materials 41, 42, 43, 44 actually have various shapes in reality, they are shown as circles in the drawings in order to simplify the explanation of the mechanism below. Only the particle size is different.

The skin 2 on which the hair 3 is thus formed
The situation where the insect repellent materials 41, 42, 43, 44 are attached to the top is as follows.

That is, the insect repellent material 41 is substantially the same as the particle diameter D ₁ thereof, although it is slightly smaller than the interval dimension P of the body hairs 3.

Therefore, the insect repellent material 41 can reach the skin 2 of the pest 1 through the gap between the body hairs 3.

Then, the insect repellent material 41 reaching the skin 2 of the pest 1 adheres to the skin 2 due to lipids and water on the skin 2.

As a result, the action of discharging carbon dioxide gas from the surface of the skin 2, which is located below the insect repellent material 41, is hindered. In the case of a pest that takes in oxygen from the skin 2, the insect repellent material 41 also blocks the intake of oxygen from the skin 2 at the site.

The insect repellent material 42 has a particle diameter D ₂ smaller than that of the insect repellent material 41, and the insect repellent material 43 has a particle diameter D of the insect repellent material 42.
The particle size is much smaller than ₂ .

The insect repellents 42 and 43 having a particle size smaller than that of the insect repellent 41 can reach the skin 2 of the pest 1 without being hindered by the body hair 3 as apparent from FIG. Like the insect repellent material 41, it adheres to the skin 2 and prevents the harmful insect 1 from discharging carbon dioxide gas.

The insect repellent material 44 is a comparative example in this example, and the particle diameter D ₄ thereof is larger than the interval dimension P of the body hairs 3. Insect repellent material 44 of such particle size
As is clear from FIG. 3, since any of the body hairs 3 will prevent the attachment, the insect repellent material 41, 42,
Like 43, the action of discharging carbon dioxide from the skin 2 of the pest 1 cannot be prevented.

When the attachment of the insect repellent materials 41, 42, 43 impedes the discharge of carbon dioxide gas from the skin 2 at that portion, the respiratory action of the insect pest 1 generally functions according to the area of the attached portion. When the area of that part exceeds the allowable range, respiratory failure occurs, and the pest 1 eventually dies.

Therefore, using such an insect repellent material,
When exterminating pests, insect repellent material 41 for the skin 2
It is extremely important to expand the area where 42 and 43 are attached,
By selecting the particle size of the insect repellent appropriately according to the pest,
The purpose of controlling pests can be achieved by increasing the area of attachment.

Next, the second mechanism will be described with reference to FIG. 4, but this second mechanism is limited to the case where the pest to be exterminated has an air gate.

FIG. 4 schematically shows a cross section of the pest at the air gate, 1 is a pest having an air gate, 2 is skin on the body surface of the pest, and 3 is hair of the pest.

In the pest 1 having a stigma, the trachea 4 extending from the body of the pest 1 opens into the skin 2 to form a stigma 5, and these trachea 4 and sac 5 are the pests 1.
The tracheal system 6 is a pest 1
Has a function as a passage for introducing oxygen into the body.

In the pest 1 having such an air gate 5, the distance between the hairs 3 in the vicinity of the air gate 5 is set to P, and the air gate 5
Let W be the opening size (diameter) of.

Then, in FIG. 4, 81, 82, 8
Reference numerals 3 and 84 denote insect repellents made of, for example, powdery zeolite, and these insect repellents 81, 82, 83, and 84 naturally have various shapes, but the explanation of the mechanism below is simplified. In order to do so, it is shown as a sphere in the drawings, and each is different only in its particle size.

In the vicinity of the air gate 5 of the pest 1, the insect repellent 8
The behavior of 1, 82, 83, 84 differs depending on the particle size, and the insect repellent materials 81, 82, 83 will be described below.
Functions as an active ingredient, and the insect repellent material 84 is positioned as a comparative example.

That is, the insect repellent 81 has a particle diameter D ₅ of
It is smaller than the space dimension P of the body hairs 3 and larger than the opening dimension W of the ostium 5.

Therefore, the insect repellent material 81 can reach the skin 2 of the pest 1 through the gap between the body hairs 3 and can be positioned on the surface side of the air gate 5. Then, the insect repellent material 81 reaching the skin 2 of the pest 1 adheres to the skin 2 due to lipids and water on the skin 2, and the air gate 5 is covered with the insect repellent material 81 and is blocked. Uptake of oxygen from the gate 5 is inhibited.

The insect-repellent material 82 has a particle diameter D ₆ which is slightly smaller than the interval dimension P of the body hairs 3 and the opening dimension W of the ostium 5.

Therefore, the insect repellent material 82 is the same as the insect repellent material 81.
It reaches the skin 2 of the pest 1 in the same manner as, but can further invade the trachea 4 through the air gate 5.

When the insect repellent material 82 enters the trachea 4, the ventilation area of the trachea 4 is significantly reduced, so that the uptake of oxygen by the pest 1 is impaired, and the invaded insect repellent material 82 is easily removed from the trachea 4. Since it does not, Pest 1 will definitely die eventually due to long-term deprivation of oxygen.

In the insect repellent material 83 having a particle diameter smaller than that of the insect repellent material 82, the insect repellent material 83 of the body hair 3 is the pest 1
Of the trachea 4 with a relatively high probability because the air gate 5 has a size considerably larger than that of the insect repellent 83.
It is possible to break inside.

The insect repellent material 83 that has entered the trachea 4 in this way is difficult to close the trachea 4 with a single particle like the insect repellent material 82, but is relatively high as described above. Since there is a probability of invasion into the trachea 4, a plurality of insect repellent materials 83 are attached and accumulated, so that the ventilation cross-sectional area of the trachea 4 is reduced, and the pest 1 is in an oxygen-deficient state.

The insect repellent material 84 is a comparative example in the case of the harmful insect 1, and the particle diameter D ₇ thereof is larger than the interval dimension P of the body hairs 3.

In such a case, since the insect repellent material 84 cannot reach the skin 2 of the pest 1 by the body hair 3, it cannot be expected to have the function of blocking the schimata 5. However, since the interval dimension P of the hair 3 and the opening dimension W of the air gate 5 have different values depending on the type of pest, the insect repellent material 84 corresponds to the insect repellent materials 81 to 83 depending on the type of the pest insect. Can act as.

In this way, the insect repellent materials 81, 82 and 83 are
Since it adheres to the tracheal system 6 of the pest 1 and impedes the uptake of oxygen from the air gate 5 of the pest 1, the pest 1 dies due to lack of oxygen and achieves the purpose of pest control.

Next, the third mechanism will be described with reference to FIG. 5, and this third mechanism is a physical mechanism utilizing the inherent humidity control or hygroscopicity of solid substances such as zeolite.

There are natural zeolites and artificial zeolites as zeolites, and both zeolites generally have an ion exchange capacity of more than about 50meq / 100g, which is required for the third mechanism described below to function. It has humidity control properties and the like.

In general, when a foreign substance adheres to the skin 2 or the hair 3 of the pest 1, the pest 1 will try to shake off the foreign substance by itself. It is supposed that the bodily fluid of the pest 1 oozes out to the skin 2 due to it.

Therefore, when the insect repellent material 51 made of zeolite is brought into contact with the site of the abrasion 7 thus formed, the body fluid of the insect pest 1 is blown out by the humidity control or hygroscopicity of the insect repellent material 51, and 1 will die due to dehydration.

In order for such a mechanism to function, it is necessary for the insect repellent material 51 to reach the site of the scratch 7 on the skin 2. Generally, body hair 3 is present, and this hinders contact of the insect repellent material 51. Therefore, it is important to avoid the obstacle caused by the body hair 3 so that the insect repellent material 51 reaches the site of the abrasion 7 on the skin 2.

Therefore, the zeolite is powdered, and the particle size D ₈ of the insect repellent material 51 made of the powdered zeolite is 1
By setting the distance P to be smaller than the interval dimension P of the body hair 3, it is possible to increase the probability that the insect repellent material 51 comes into contact with the portion of the scratch 7 and thereby surely kill the pest.

It should be noted that the insect repellent material 52 has a particle diameter D ₉ larger than the interval dimension P of the body hairs 3, and the insect repellent material 52 comes into contact with the site of the abrasion 7 due to the presence of the body hairs 3. FIG. Further, in FIG. 5, the insect repellent materials 12 and 13 are simply shown as spherical shapes in order to facilitate understanding of the third mechanism, but it is needless to say that they are actually various irregular shapes.

The advantage common to the first to third mechanisms described above is that, unlike the conventional insecticides using chemical insecticides, chemical substances with strong acute toxicity are vaporized at high concentrations in the space where the pests should be controlled. It is possible to exterminate pests without having to do so, and because of this, it is possible to avoid the effects of chemical pesticides on humans and animals and environmental pollution, and the pests do not gradually become resistant, and the physical properties of powdery solids. Therefore, the pests can be exterminated over a long period of time.

As shown in FIG. 2, the insect repellent sheet utilizing the insecticidal mechanism having such advantages is manufactured as follows by a so-called electrostatic flocking technique using, for example, a flock processing device 11.

The flocking device 11 includes a sheet material supply roll 12 and a processed sheet material take-up roll 13
And a binder coating machine 14, a flocking machine 15, and a heat dryer 16 are sequentially arranged between the rolls 12 and 13.

In the production of the insect repellent sheet of the present application, the supply roll 12 is equipped with the sheet material 17 to be the base material of the insect repellent sheet in a rolled state.

In this embodiment, the supply roll 12
The sheet material 17 wound around is a non-woven fabric formed of polyester fiber and having a thickness of about 1 mm.

As the sheet material 17, not only non-woven fabric such as felt but also woven fabric can be used. Further, plain paper, resin processed paper, synthetic fiber paper, kraft paper,
Paper such as Japanese paper or a plastic sheet such as polyethylene or polypropylene can be used.

The sheet material 17 is the supply roll 1
After being pulled out from the No. 2 and passed through the binder coating machine 14 and the like, it is moved in the direction of the arrow in the drawing and wound around the winding roll 13.

The binder applicator 14 is used for the binder tank 1
4a and the coating roll 14b, the binder 18 stored in the binder tank 14a can be coated on the lower surface of the sheet material 17 drawn into the coating roll 14b with an appropriate thickness.

As the binder 18 used in this embodiment, a vinyl acetate synthetic glue is used, and the coating thickness thereof is extremely thin, for example, 0.1 mm or less. In this embodiment, it is approximately 0.05.
It is about mm.

When the insect repellent sheet is manufactured by the flocking device 11 as in this embodiment, the binder 18 is not limited to the above, and an appropriate emulsion type or aqueous solution type adhesive may be used. In that case, the coating thickness may be appropriately adjusted according to the adhesive force of the adhesive used.

The sheet material 17 having the lower surface coated with the binder 18 in a desired thickness in this manner is then sent to the flocking machine 15.

The flocking machine 15 includes a processing section 22 having electrodes 21 arranged on both sides of the sheet material 17, and a powder supply section 23 for supplying the fine particle insect repellent material 8 to the processing section 22.
In this embodiment, the insect repellent material 8 supplied from the powder supply section 23 is negatively charged, accelerated toward the sheet material 17 located on the positive electrode 21 side with a required voltage, and Sheet material 17 coated with binder 18
It is adapted to be dispersed and adhered to the lower surface at a required density.

The insect repellent material 8 used in this embodiment is the insect repellent material 41, 42, 43, 44, 81, 82, 83, 84, 5 described in the first to third insecticidal mechanisms.
It corresponds to 1,52, and is formed by crushing natural zeolite as insect repellent material to form fine particles with a required particle size. When measured according to
It is 0 to 170 meq / 100 g, and has sufficiently large hygroscopicity or humidity control.

The particle size distribution of this insect repellent material 8 is shown in FIG.
As shown in (a), the fine particles having a particle size of 60 μm or less account for 40% by weight.

When the grain shape of the insect repellent material 8 is observed with a microscope, for example, it is as shown in FIG. 7, and each insect repellent material 8 is aspherical and is formed in a generally polyhedral shape. As shown in the enlarged view of FIG. 8, a pointed end portion (hereinafter referred to as a pointed end portion) 24 is formed.

As the insect repellent material used as the insect repellent material 8 in this manner, in addition to natural zeolite, artificial zeolite obtained by boiling fly ash recovered from the flue gas of a pulverized coal boiler with an aqueous sodium hydroxide solution, and others An artificially produced synthetic zeolite can be used.

In addition to these zeolites, a solid material having an appropriate hygroscopicity or humidity control property, such as sepiolite, silica gel, bentonite, talc, silicic acid anhydride, and diatomaceous earth, may be used as the insect repellent material.

It is also possible to use a mixture of two or more of the above-mentioned zeolite and each solid material.

Then, a fine particulate insect repellent material 8 obtained by using any one of these is mixed with a solid material such as fine powder shirasu (volcanic ash) as an additive material, and this is mixed with the powder feeder 23. It may be supplied from.

Silas cannot be expected to have the third insecticidal mechanism because it does not have hygroscopicity or humidity control as an insect repellent material, but it can be expected to have the first and second insecticidal mechanisms. It corresponds to insect repellent material 8.

In addition, the shirasu has a large number of sharp pointed end portions 24 in its grain shape.
Since the formation of the abrasion scratches 7 is promoted, the third insecticidal mechanism is strengthened when used in a mixture with the above-mentioned zeolite or solid material.

It goes without saying that the additive material for such a purpose is not limited to Shirasu.

Further, the insect repellent material 8 formed of the above insect repellent material or the like may be mixed with a weakly effective drug such as boric acid, and the mixture may be supplied from the powder feeder 23. Good. In this case, since the insecticidal mechanism described above acts on the pest at the same time as the medicinal effect of the drug, even if the medicinal effect is weaker than before, it is sufficiently effective.

In this way, the sheet material 17 to which the insect repellent material 8 is adhered is then dried in the heating dryer 16 by electric heat or the like, and then wound on the winding roll 13 as a product.

Needless to say, in the heating dryer 16, the drying temperature and the heating time are set in consideration of the heat resistance of the sheet material 17 and the insect repellent material or chemicals used.

Insect-proof sheet 31 manufactured in this way
Is schematically shown in FIG.

That is, the insect repellent sheet 31 of this embodiment.
The base material 32 is made of the sheet material 17, and the insect-proof layer 33 is formed on one side surface thereof. The insect-repellent layer 33 may be formed on both side surfaces of the base material 32.

The insect-repellent layer 33 includes the insect-repellent material 8 in the form of fine particles,
A thin binder layer 34 that attaches this onto the substrate 32
The insect repellent material 8 is deposited on the surface of the binder layer 34 in a required density. The binder layer 34 corresponds to the adhesive layer in the present invention.

The insect repellent material 8 thus held on the base material 32 by the binder layer 34 is held with a weak adhesive force of, for example, 0.3 kgf / cm ² or less.
Can be withdrawn.

In this embodiment, as described above, the insect repellent material 8 contains fine particles having a particle size of 60 μm or less. This is because the termite 1 was taken into consideration as the insect pest 1 to be insect repellent. Is.

That is, in the above-described first to third insecticidal mechanisms, the insect repellent material 8 is applied to the body surface 2 of the pest 1 regardless of the presence of the hair 3 formed on the body surface 2 of the pest 1. Reliable arrival is important for producing a sufficient insecticidal effect.

For this reason, since the target pest 1 in this example is a termite and the distance P between the hairs 3 is 60 μm, the insect repellent material 8 having a particle size of 60 μm or less is contained in the insect repellent layer 33. The insect repellent material 8 having a particle size of 60 μm or less increases the probability that termites will reach the body surface 2, and the termites as the pest 1 can be surely killed.

The particle size of the insect repellent layer 33 is 60 μm.
Insect repellents exceeding the above range exhibit the same function as insect repellents as described above against other kinds of harmful insects having a larger hair interval P than termites.

When the insect repellent material of the insect repellent material 8 having a humidity control property such as the above-mentioned zeolite is used, the insect repellent material having a particle diameter of more than 60 μm is the insect repellent sheet 3
It exerts the function of reducing the vitality of the pest 1 by adjusting the humidity in the installation space nearest to 1 to the dry side.

Since the insect repellent material 8 can be detached as described above, when, for example, termites are present as the insect pests 1 in the insect repellent sheet 31, the insect repellent sheet 3 is moved by the action of the termites.
The insect repellent material 8 held on 1 disengages, and the detached insect repellent material 8 allows the first to third insecticidal mechanisms to function to kill termites.

The adhesive force of the insect repellent material 8 is 0.2 kgf / cm ²
If the following is set, the frequency of detachment of the pest 1 due to movement becomes higher, and the probability of the insecticidal mechanism increases.

As described above, the insecticidal mechanism by the insect repellent sheet 31 is physically related to the particle size of the insect repellent material 8 and the distance P between the hairs 3 of the harmful insect 1 to be exterminated and the opening W of the air gate 5. Therefore, it can be used against various pests.

Pests that can be exterminated using the insect repellent sheet 31 of the present invention include, for example, not only other termites and house mites such as phytoseiid mites, dust mites, mites or chatworms, cockroaches, Mosquitoes, flies, fleas, lice, flathead beetles, beetles, black-spotted beetles, sawtooth flat beetles, staghorn beetles, weevil, azuki bean weevils, stag beetles, beetle bugs, beetle bugs,
Squid, chironomid, butterfly flies, stink bugs, flies, ticks, white flies, Nikameiga, planthoppers, leafhopper leafhoppers, small-eyed chafers, white-spotted moths,
They are the symbiotic beetles, scale insects, spider mites, aphids, diamondback moth, boll weevil, weevil, weevil, pine wood beetle, beetles, scarab beetles, striated beetles, and grasshoppers.

Among the above-mentioned pests, the house mites dust mites and mites mite have no stigmas and take in oxygen from the skin 2. Therefore, the second mechanism does not work. The natural zeolite adhered to the skin by the first mechanism removes not only the emission of carbon dioxide gas but also the uptake of oxygen, and at the same time, it removes it surely by dehydration from scratches by the third mechanism. can do.

When targeting the above-mentioned pests different from termites, as is clear from the above-mentioned first to third mechanisms, depending on the distance P between the hairs of the target pests, etc. Since the particle size of the active ingredient of the wood is determined, it is preferable to appropriately adjust the particle size distribution of the insect repellent to be used, and in the case of insect repellents that are targeted for controlling a specific type of pest, the distance between the hairs of the pest It is efficient to separate only particles having a particle size smaller than P and use this as an insect repellent material.

For example, when the house tick mites, Plutella mites, are to be exterminated, the distance between the hairs is approximately 30 μm.

In this case, for example, if the insect repellent material 8 having the particle size distribution shown in FIG. 6 (a) is used, a substance having a weight percentage of about 30% or less functions as an active ingredient capable of reaching the skin of the tick mites.

However, since the opening dimension W of the phylum of the tick tick is approximately 1 μm, in the second mechanism described above,
Very few active ingredients can function as insect repellents 82,83.

Therefore, in this case, the particle size distribution of the insect repellent material 5 used is, for example, as shown in FIG.
It is preferable to increase the content ratio of the fine particles of μm or less to, for example, 70%, which also increases the active ingredients that can function as the insect repellent materials 82 and 83.

Similarly, in the case of other pests as well, the particle size distribution of the pest control material 8 is determined on the basis of the interval size P of the hair 3 of the target pest and the opening size W of the air gate 5, and these pest control materials 8 are provided with these particle size distributions. Fine particles having a smaller particle size than the above standard may be positively included.

Even if the content of fine particles having a particle size of 30 μm or less is increased in this way, it does not cause any trouble in the insecticidal mechanism against harmful insects such as termites having a large hair pitch P. If the particle size of the insect repellent material 8 is made smaller than the body hair interval, it is possible to reduce the obstruction of the body hair 3 in contact with the body surface 2, so that a reliable insecticidal effect can be expected.

As described above, when the insect repellent sheet 31 is intended for the ticks, since the length of the ticks is small, the adhesive force of the insect repellent material 8 by the binder layer 34 or the like is set to, for example, 0.
If it is 15 kgf / cm ² or less, the effectiveness against harmful insects such as small duck is enhanced.

The insect repellent sheet 31 described above includes the base material 32.
The binder layer 34 is formed on the binder layer 34, and the insect repellent material 8 is dispersed and adhered to the binder layer 34 using the flocking machine 15 and held on the base material 32. However, the flocking device 11 is not used, It is also possible to form an adhesive layer on the surface of the base material 32 and spray the insect repellent material 8 on this surface by an appropriate method.

Even when the insect repellent material 8 is adhered to the surface of the base material 32, even if the binder layer 34 and the adhesive layer are interposed as described above, the surface of the base material 34 is referred to in the present invention. It goes without saying that the insect repellent material 8 is attached.

The binder layer 34 on the surface of the base material 32 is also used.
It is also possible to omit the formation of and to hold the insect repellent material 8 directly on the base material 32 itself.

For example, a fibrous sheet such as cloth or paper is used as the base material 3
When used as 2, the insect repellent material 8 is sprinkled on the surface of the base material 32 and rubbed to mechanically engage and hold the fibers on the surface of the base material 32. Further, even when a sponge material whose surface has bubbles opened, such as a so-called open-cell type sponge material, is used as the base material 32, the insect repellent material 8 is held in the bubbles opened on the surface of the base material 32. be able to.

That is, when the surface of the base material 32 is rough as described above, it is possible to directly hold the insect repellent material 8 on the base material 32 by using the unevenness present on the surface of the base material 32 as a clue.

Furthermore, when the surface of the base material 32 is smooth, the base material 32 and the insect repellent material 8 to be held on the base material 32 are charged with opposite polarities, whereby the insect repellent material 8 is electrostatically charged. It is also possible to hold it directly on the surface of the base material 32.

[0104]

As described above, according to the invention of claim 1, in the insect repellent sheet, the insect repellent layer on the surface of the substrate is provided with a fine particulate insect repellent material made of a solid substance having an insect repellent effect. The insect repellent material that is releasably attached to the surface of the sheet material contains fine particles whose particle size is smaller than the body hair interval of the insect pest to be insect repellent, so the insect repellent material is prevented by the body hair of the insect pest. Instead, the pests easily attach to the body surface, and the insect repellent can surely kill the pests when the pests come into contact with the body surface.

Since the insect repellent material of the insect repellent layer kills the insect pest by contact with the body surface of the insect pest,
Like a conventional insect repellent sheet, it can exhibit a sufficient insecticidal effect without transpiration at a high concentration in the space where the insect repellent component is installed, and it does not affect humans due to the evaporated insect repellent component. The effective period can be extended.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view of an insect repellent sheet.

FIG. 2 is an explanatory diagram of a process of manufacturing an insect repellent sheet by a flocking device.

FIG. 3 is an explanatory diagram of a first insecticidal mechanism.

FIG. 4 is an explanatory diagram of a second insecticidal mechanism.

FIG. 5 is an explanatory diagram of a third insecticidal mechanism.

6 (a) and 6 (b) are particle size distribution diagrams of the insect repellent material, respectively.

FIG. 7 is a sketch of the grain shape of the insect repellent material viewed under a microscope.

FIG. 8 is an explanatory diagram of the shape of the insect repellent material.

[Explanation of Codes] P Body Hair Interval D _{1 to} D ₈ Particle Size 1 Pest 3 Body Hair 8 Insect Repellent 11 Flocking Device 24 Tip Point 31 Insect Repellent Sheet 32 Base Material 33 Insect Repellent Layer 34 Binder Layer (Adhesive Layer)

Claims (10)

[Claims] 1. An insect repellent sheet having an insect repellent layer having an insect repellent component formed on the surface of a sheet-shaped substrate, the insect repellent material comprising fine particles of an insect repellent material which is a solid substance having an insect repellent effect on the surface of the substrate. And to form the insect repellent layer by adhering at a required density, and the finely divided insect repellent material is detachably attached to the surface of the base material, and the finely divided insect repellent material is an insect repellent target. An insect repellent sheet comprising fine particles having a particle size smaller than the hair interval of the harmful insects. 2. The insect repellent sheet according to claim 1, wherein the insect repellent material is artificial zeolite, natural zeolite,
An insect repellent sheet characterized by using one or more of a group of solid materials consisting of sepiolite, silica gel, bentonite, talc, silicic acid anhydride, and diatomaceous earth. 3. The insect-repellent sheet according to claim 1 or 2, wherein the insect-repellent material has a polyhedral shape and a tip portion is formed on a surface thereof. 4. The insect repellent sheet according to claim 2 or 3, wherein the insect repellent material is a particulate solid substance having substantially the same size as that of the insect repellent material, the shape of which is a polyhedron shape and a tip portion is formed on the surface thereof. An insect repellent sheet characterized by being contained in a layer. 5. The insect repellent sheet according to any one of claims 1 to 4, wherein a chemical agent having an insecticidal effect is added to the insect repellent layer. 6. The insect repellent sheet according to any one of claims 1 to 5, wherein an adhesive layer is formed on the base material side portion of the insect repellent layer, and the fine-grained insect repellent material is interposed via the adhesive layer. Is attached to the surface of a base material. 7. The insect repellent sheet according to any one of claims 1 to 5, wherein the base material is a sheet material having a rough surface, and the fine granular insect repellent material is engaged with a surface layer of the base material. An insect repellent sheet, which is held and adhered to the surface of the base material. 8. The insect repellent sheet according to any one of claims 1 to 5, wherein the surface of the base material and the insect repellent are provided with electric charges having polarities different from each other, and the insect repellent is electrically attracted by the base. An insect repellent sheet characterized by being attached to the surface of a material. 9. The insect repellent sheet according to any one of claims 6 to 8, wherein the insect repellent material is distributed on the surface of a substrate by a flocking method. 10. The insect repellent sheet according to claim 6,
An insect repellent sheet characterized in that an adhesive layer is formed by using the adhesive as an emulsion type or aqueous solution type adhesive, and an insect repellent material is distributed on the surface side of the adhesive layer by flocking.