JPH0452101A - Cockroach protective decorative laminated sheet and production thereof - Google Patents

Abstract

PURPOSE:To produce the above decorative laminated sheet which has a type for continuing validity and being protective against the cockroach by adopting a means contg. chemicals capable of blending a phenylphenol-based compd. with a pyrethroid-based compd. at the specific rate and of fixing this mixture for a butt plate and a coated film. CONSTITUTION:An oak plate is immersed in the treatment liquid consisting of 1.5wt.% cyphenothrin (pyrethroid-based), 4.5wt.% p-phenylphenol (phenylphenol-based), 0.5wt.% Span 80 (methacrylic methyl ester) and 93.5wt.% 'Toesole #9(R)' (solvent) for 3sec and utilized for a butt plate 2. Plywood is manufactured by bonding and pressurizing four sheets of lauan veneer 1a, 1b, 1c and 1d and utilized for the base plate 1. A joint plate F is obtained by bonding the butt plate 2 and this base plate 1. A coated film 3 is formed by applying the face of the butt plate 2 with cockroach protective coating of tan which is obtained by blending 98.00wt.% ultraviolet curing type urethane resin liquid, 0.05wt.% cyphenothrin and 0.15wt.% p-phenylphenol. The cockroach protective decorative laminated sheet is manufactured by irradiating the surface of the coated film 3 with ultraviolet rays.

Description

[Detailed Description of the Invention] C. Technical Field of the Invention The present invention relates to a cockroach-repellent decorative board and a method for manufacturing the same, and more specifically, to a cockroach-repellent decorative board and a method for manufacturing the same. The present invention relates to a decorative laminate that can be used to prevent cockroach invasion for a long period of time, and a method for efficiently manufacturing such a decorative laminate.

[Prior Art and Technical Issues to be Solved] As is well known, cockroaches are indoor pests that are distributed all over the world and are susceptible to various viruses such as polio virus, coxalaki virus, and yellow fever virus. In addition to protozoa and fungi that are associated with human diseases, cockroaches also carry tapeworms that cause diseases such as typhoid, leprosy, food poisoning, and plague. (Refer to pages 166-167 of World Science Encyclopedia (Vol. 6, published by Kodansha)), they invade buildings where people live at night and crawl around everywhere, spreading pathogens. There is a huge demand for a means of repelling it.

Due to these circumstances, various measures have been proposed to prevent cockroaches from entering indoors, but there are many methods to prevent cockroaches from entering indoors. However, no effective means to keep cockroaches indoors for a long period of time has been found to be satisfactory. By the way, if you look at the conventional measures to repel cockroaches, there are two methods: (i) chemical methods such as applying insecticides to the cockroaches' paths or spraying them on the cockroaches, and (v) using ultrasonic waves with wavelengths that damage cockroaches' nerves. Physical methods that generate oscillations, and capture methods that trap cockroaches by setting traps with odors and pheromones that attract fleas and cockroaches, are widely used. However, the chemical method using insecticides in i can be expected to have a temporary effect, but there is no insecticide that is harmless to humans and animals and has long-term efficacy, and moreover, dead cockroaches are scattered indoors. This has the disadvantage of getting dirty, and the ultrasonic oscillator method described in No. 5 also causes cockroaches to become resistant to ultrasonic waves, become unresponsive, and walk on top of the ultrasonic oscillator without any hesitation. Furthermore, even with the positive method of catching cockroaches, the collected cockroaches must be disposed of one by one, which is not sanitary, and the cockroaches become accustomed to the trap, reducing its catching ability. Such shortcomings were unavoidable.

The present invention was made in view of the above-mentioned situation with the conventional technology for preventing cockroaches from entering indoors. Moreover, the technical object is to provide a cockroach-resistant decorative board with a long-lasting effect that can be used to construct architectural structures that are harmless to humans and animals.

Another technical object of the present invention is to prevent cockroaches from entering indoors by preventing cockroaches from entering indoors so that dead cockroaches are not scattered indoors. To provide a cockroach-repellent decorative board with which a structure can be built.

Furthermore, another technical object of the present invention is to provide a rational method that can efficiently produce a cockroach-repellent decorative board with long-lasting efficacy.

[Means adopted to solve the problem]

The means adopted by the present inventor to solve the above technical problem will be described below with reference to the accompanying drawings (FIG. 1).

That is, the present invention is a decorative board used as a building material for building floors, walls, ceilings, etc., that is, a veneer 2 is laminated on the surface of a substrate 1, and a coating film 3 is layered on the surface of this veneer 2. A drug-containing means is adopted in which an insecticide containing a pyrethroid compound as an active ingredient and an insect repellent containing a phenylphenol compound as an active ingredient are mixed and fixed on the veneer 2 and coating film 3 of the well-known decorative board. By doing so, the chemical unpleasant irritation of pyrethroid compounds and the repellency of phenylphenol compounds against cockroaches act synergistically, changing the indoor chemical environment where cockroaches live, and suppressing cockroaches over a long period of time. The gist is that it works on chemoreceptor organs to prevent cockroaches from entering indoors.

Further, in the present invention, when bonding the veneer 2 to the substrate 1, the veneer 2 is impregnated with a treatment liquid containing an insecticide containing a pyrethroid compound as an active ingredient and an insect repellent containing a phenylphenol compound as an active ingredient. After evaporating the solvent of the impregnated treatment liquid, this treated veneer 2 is bonded to the substrate 1 to form a bonding plate F, and a pyrethroid compound is applied to the surface of the veneer 2 bonded to the bonding plate F. A chemical impregnation treatment means for finishing the surface by applying a finishing paint prepared by adding an insecticide having an active ingredient of Phenylphenol compound and an insect repellent having a phenylphenol compound as an active ingredient, and a cockroach-resistant coating finishing means. The gist of the manufacturing method lies in the fact that a method has been established that allows industrial mass production of the cockroach-repellent decorative laminates.

In addition, in the present invention, the wood and joining method used to manufacture the desired decorative board are almost the same as those of conventional decorative boards.

To summarize, the most characteristic features of the present invention are:
A pyrethroid compound is used as a cockroach-killing substance in the fine pores of the cell membrane of the wood that constitutes the veneer 2 constituting the decorative board and the coating film 3, and if necessary, also in the fine pores of the cell membrane of the wood veneer 1a that forms the substrate 1. Another feature is that a phenylphenol compound is contained as a cockroach repellent substance and is deposited there for sustained release over a long period of time.

However, as a pyrethroid compound, for example (1
) Cyphenothrin having the following structural formula: (2) A synthetic pyrethroid compound such as permethrin having the following structural formula can be used, and as a phenylphenol compound, for example, (
Phenylphenol insect repellents such as 1) O-phenylphenol having the following structural formula (2) p-phenylphenol having the following structural formula can be used.

Hereinafter, the effects of the present invention will be explained in more detail with reference to Examples.

[Example]

i. Preparation of immersion treatment solution Cyphenothrin 1.5w% (Sumitomo Chemical Co., Ltd. 1: GOKILA) IT);
p-Phenylphenol 4.5w% (!Ken Perfume Industry 11 Type Company Seal: M・+111) C, Span 8
0 (methacrylic acid methyl ester) 0.
5w%2, Toezol #9 (solvent) 9
A natural wood oak board (thickness: 1.7 mm, length: 30 ao, diameter: 30 holes) was immersed for 3 seconds in a treatment solution consisting of the above components. The oak board material impregnated with the cockroach repellent was obtained by impregnating it and drying it to volatilize the solvent.
used as In addition, when we cut out a part of the veneer 2 (treated oak board material) in this example and observed the cross section of the butt end cross section and the cross section in the fiber direction by taking electron micrographs, we found that even when looking at the cross section of the butt end (Fig. 9) , even when viewed in the cross section in the fiber direction (first
(Figure 0), it was clearly demonstrated that the drug was fixed to the solid resin component between the cell walls.

On the other hand, a glue spreader (gLue 5prader
), apply adhesive to each veneer 1a and Ib1cid, combine them so that the grains of each veneer are perpendicular, stack them with weight, and press them at room temperature (press pressure 10kg/aIr: 20 minutes)
Then, hot pressing was performed (pressing temperature: 120° C., press pressure: 9 kg/ai, pressing time: 4 minutes and 4 seconds) to produce plywood, which was used as substrate 1 in Example 2.

Then, the oak veneer 2 impregnated with a cockroach repellent and the substrate 1 are bonded together using an epoxy adhesive to form a joint plate F. In this case, the adhesion is performed using hot press (press temperature 110-115°C, press pressure 7 kg).
/c! 1, press time 60 seconds).

A light brown cockroach repellent paint composed of the following formulation is applied to the two surfaces of the veneer of the bonded plate F thus obtained to form a coating film 3 on the surface.

■、Cockroach repellent paint liquid formulation A、Ultraviolet curable urethane resin liquid 98.00 wl
T mouth, Cyphenothrin 0.05WX
C. p-phenylphenol 0.15w% Thus, when the coating film 3 surface of the bonded plate F on which the coating film 3 was formed was irradiated with ultraviolet rays for 5 minutes, the coating film 3 was cured and the oak wood grain stood out beautifully. An example cockroach-repellent decorative board (hereinafter referred to as Example product) was obtained. The decorative board thus obtained has a size of 30 mm in length, 30 mm in width, and 7.5 mm in thickness, so it can be used as a flooring material.

[Example ■]

i. Preparation of immersion treatment solution (Sanko Kagaku Co., Ltd. I) 11. Span 80 (methacrylic acid methyl ester) 0.5w% 2. l-Ezol #9 (solvent) 93.5w% A treatment solution consisting of the above components , natural wood/cherry wood (thickness 0.2mm, length 30mm)
The treated solution was immersed into the cherry wood at a rate of 18±1 g/IIf by immersing the cherry wood (opening, width 30 cm) for 5 seconds, and the cherry wood board was dried to volatilize the solvent. A plate material is used as the veneer 2 of this embodiment (2).

Next, among the four lauan veneers 1a, 1b, IC, and 1d obtained by peeling lauan wood to a thickness of 1.20 mm with a rotary lace, the topmost veneer 1a was also treated with the above-mentioned cockroach repellent treatment. 22±1 in the veneer 1a by immersing it in the liquid for 2 seconds.
Impregnate the glrd and dry to evaporate the solvent.

And the lauan veneer 1a that has been treated with the above cockroach repellent treatment,
Apply adhesive with a glue spreader (gLue sp?Iader) to the joining surfaces of other lauan veneers 1b, IC, and 1d so that the grains of each veneer 1a, 1b, 1c, and 1d are perpendicular to each other. After combining and stacking weights, pressurize at room temperature (press pressure 10 kg/aIr: 20 minutes),
Furthermore, hot pressing (press temperature 120°C, press pressure 9k)
g/all, press time 4 minutes and 4 seconds) to produce plywood, which is used as the substrate 1 in Example 2.

Next, the following cockroach repellent coating solution was prepared and applied to the surface of this substrate 1 by a spraying method at 20 to 50 g per area, followed by drying to volatilize the solvent.

5. Cockroach repellent coating liquid permethrin 1.0wX0
o-phenylphenol 4. OwX, Span 80 (methacrylic acid methyl ester)'
0.5w%Mitoezol #9 (solvent)
94.5 w Bonded with epoxy adhesive to form joint plate F. In this case, the adhesion is carried out by hot press (pressing temperature 110-115°C, press pressure 7kg/c).
i, press time 60 seconds).

A light brown cockroach repellent paint composed of the following formulation is applied to the two surfaces of the veneer of the bonded plate F thus obtained to form a coating film 3 on the surface.

i.Cockroach repellent paint liquid formulation a.Ultraviolet curable urethane resin liquid 98.00 wX
o, Heni met! J N0-05w A cockroach-repellent decorative board of this example (hereinafter referred to as Example Product ■) was obtained in which the wood texture unique to Sakshi stood out beautifully.The decorative board thus obtained had a length of 30 ann, a width of 30 ann, and a thickness. length 7.5mm
Because of its size, it can be used as flooring material.

〔experiment〕

In order to verify the practical efficacy of the above-mentioned example products, the present inventor conducted a cockroach repellent trial experiment on these examples. This was because they were concerned that testing at the laboratory level would immediately progress to practical application.

By the way, when conducting tests on a practical scale, the problem is not only how to secure a testing site but also how to understand the state of cockroach habitat over a wide area. Currently, there are several methods for investigating the habitat of cockroaches, such as (i) measuring the amount of water and food consumed by cockroaches, (n) sticky trap method, (5) butter trap method, juice and roach spot method, etc. has been done.

However, the sticky trap method is characterized by its simplicity and ability to grasp static habitat conditions, while the butter trap method, like the sticky trap method, observes static habitat conditions and is not easy to use. Although it is inferior to the adhesive trap method, it has the advantage that it can be reused on a sample basis based on the one-symbol elimination method. Unlike the sticky trap method and butter trap method, the roach spot method is superior in that its primary feature is the ability to grasp dynamic habitat conditions, and it does not directly affect experimental colonies. Conceivable.

It is therefore a very difficult question as to which method is most appropriate for evaluating the practicality of the cockroach-repellent decorative board completed by the present inventor.

Therefore, in order to increase the objectivity of the experimental results and to obtain reliability, the inventors have determined that, as far as the situation allows,
We believe that there is no appropriate evaluation method other than repeating experiments using various methods, and from this perspective, we manufactured a considerable amount of the above example product (■) and applied it to a house of the same type as a commercially available house. In addition to the four methods mentioned above, a continuous counting test using an optical fiber sensor was also carried out.

Therefore, it can be said that the findings obtained through this experiment demonstrate the practical effectiveness of the product of the present invention (Example product ■) in its cockroach repellent properties, and also suggest a part of future cockroach repellent construction. .

i. June 6, 1989. 9o Adult cockroaches: 300 Black cockroach larvae: 300 A. Experimental facility A newly built one-story wooden house of the same type as a commercially available house was used as the experimental facility.

The treatment area was the kitchen area (3.5m) of each experimental house.
), and the above-mentioned example products were laid as flooring (floorboards) in each of these kitchen areas. The control area to be compared with this is the washroom area (3.5 m: hereinafter referred to as the control area).
1), and for some experiments a living part (18,
2nd (hereinafter referred to as control group-2) was also used.

B. Test insect The test insect used was a black cockroach (Azabu University strain) that had been subcultured in the laboratory. The release to the above experimental house is as follows:
The experiment was divided into three times over the following days, and a total of 1200 animals were used.

A total of 1,200 individuals.297 individuals were confirmed dead or dead during the experiment, 505 individuals were confirmed to be alive at the end of the experiment, and the remaining 398 individuals are missing (the cause is that they fell into gaps, etc.). (It is thought that this may have been due to intrusion, disconfirmation, escape from the testing site, decomposition after death, etc.)

Therefore, the recovery rate of test insects, including dead individuals, was 66.8.
%, and for only surviving individuals, it was 42.1%.

C9 experimental method The cockroach repellency experiment was conducted on the following dates.

i. Comparison of water consumption From June 6, 1989 to August 10, 1989.

■Comparison of tx consumption From June 6, 1989 to July 19, 1989.

Correct, roach spot method (cockroach capture count) 1989 6
From the 1st of the month to the 23rd of July of the same year.

, iv. Butter trap method (cockroach capture count) from July 18, 1989 to July 23, 1989.

■ Adhesive trap method (cockroach capture count) Appetizer, sensor measurement method (cockroach passage count) (a) Measurement of water consumption by cockroaches To compare the water consumption, add water to a cup filled with absorbent cotton. A device with a fixed bottle was used.

The test was carried out with one point each for the treated area and control area-1. As desired, during the test using a sensor using water, which will be described later, the amount of water consumed inside the sensor was measured, and water was not placed at the regular measurement point. When compiling the data, we removed errors due to transpiration as much as possible, set up blank water on the second floor to reflect the actual water consumption of the test insects, and converted using the following formula.

Water (feed) consumption = EO-(B@-B)XEI/Bl-
EE: Initial weight of test plot E: Weight of test plot B, initial weight of Ni blank B Weight of Ni blank (b)
2 (manufactured by Nippon Yurea Co., Ltd.) was used. An appropriate amount of bait was placed in a petri dish and placed adjacent to the point where water consumption was compared. Also, as in the case of water, during tests using bait-based sensors, the amount of bait consumed within the sensor was measured, and no bait was placed at the regular measurement points.

In the case of bait, weight fluctuations occur due to absorption and expulsion of moisture in the air, so a blank was placed on the second floor and the weight was converted using the same formula as in the case of water. The reason why we set the number of points for each comparison of water and feed consumption to 1 is because we thought that when measuring continuously over a short period of time, if there were too many measurement points, it would be difficult to measure when small amounts were consumed. .

(C) Measurement of the number of roach spots To count the roach spots, a circular filter paper with a diameter of 18.5 ann was placed on the floor, and the number of spots generated on the filter paper was counted for 47 days. Unlike the experiments in (a) and (b), it is unlikely that the increase in the number of measurement points would affect the experimental system, so in addition to the treatment area and control area-1, an experiment was also conducted in control area-2.

The number of "filter papers" installed was 7 in the treatment area, 6 in the control area-1, and 5 in the control area-2.

(Mountain) Catch counting using butter traps A waist-high petri dish with a diameter of 9 ant and a height of 6 cm was coated with butter evenly on the inside.Then, an appropriate amount of bait was placed in the petri dish and processed. Nine traps were set in each of the plots and control plot-1, and counting was carried out for 8 days. Counting was done every day, and the captured test insects were released after counting. The capture counting was carried out using this butter trap. During this period, tests to measure food consumption were discontinued.

(e) Counting using an optical fiber sensor The optical fiber sensor uses the current output of an optical fiber photoelectric sensor (Tateishi Electric Co., Ltd., product number E3XR-CF2) to a personal computer using an SX (Canon Co., Ltd., product number 2). 8) The interface (Total System Research Institute Co., Ltd.: Product name:
I used the one connected via "My Sensor"). The detection part was set with an optical axis distance of 5an and fixed using an aluminum angle so that the distance between the optical axis and the floor was 1mm, and when the test insect came to ingest water or food, It was set up so that it would be counted when it crossed the optical axis.

Water or bait: top surface 12an x 12an, height 9
It was surrounded by a polyester case to prevent the test insects from coming around from the rear without passing through the detection part.

Data collection is performed using a data recorder (Sanyo Electric Co., Ltd., product number PCH-DR2) to record the cumulative count every 2 hours.
). In the actual experiment, one sensor was placed in each of the treatment area and control area-1, and the number of test insects that came to take in water was counted for 92 hours, and the number of test insects that came to take food was counted for 472 hours. Counting was carried out.

(F+ Capture counting using sticky traps Capture counting using sticky traps was performed on the last day of all experiments so as not to interfere with other experiments.

There were 5 traps in each of the treatment area, control area-1, and control area-2.
16:00 to 10:00 a.m. the next day.
The time was set.

(e) Calculation of repellency rate For the results of each experiment, the repellency rate was calculated using the following formula.

D. Results and Discussion (11+ Comparison of Water Consumption Figure 2 shows the water consumption in the experiment (a) above, accumulated over 64 days. According to the results of this experiment, the treatment The water consumption in the treated plot was lower than that in the control plot, and the repellency rate calculated based on the final accumulation was approximately 74.8%.In addition, in the treatment plot, almost no water was consumed from around the 41st day. It is presumed that the water intake behavior of the test insects was suppressed due to the development of repellency in the treated area.

(b) Comparison of feed consumption Figure 3 shows the cumulative amount of feed consumed over 42 days in the experiment Q)) above. According to the results of this experiment, consumption in the treated area was lower than in the control area, and the repellency rate calculated based on the final accumulation was 82.9%, indicating that the treated area had strong repellency as in the case of water. Admitted.

Comparison of the number of fCl roach spots FIG. 4 shows the average number of roach spots per sheet of "filter paper" in the experiment (C) above, accumulated over 8 days. The results of this experiment also show that the number of spots in the treated area was smaller than in control area-1 and control area-2, and in the final cumulative analysis, the number of spots in the treated area was approximately 78.1% compared to control area-1. -2 showed a high repellency rate of about 88.1.

(d) Capture counts by butter traps Figure 5 shows the total number of test insects captured by butter traps on each day in the experiment (d) above. The results of this experiment also showed that the repellency rate of the treated area was higher than that of the control area, with a maximum of 80% and a minimum of 12.5%.
The avoidance rate when compared over the entire implementation period is approximately 5.
It was 8.6%.

Although this result is considered to be a value that can be evaluated independently, when compared to the previous three tests, the repellency rate has decreased. This can be inferred to be due to the type of device that prevents the test insects from escaping when they come to take the bait, and the high number of insects caught in the treatment plots on the first day of the experiment.

(e) Counting using an optical fiber sensor Figure 6 shows the 92-hour count of test insects coming and going to ingest water in the above experiment (e), and Figure 7 shows the counts of test insects coming and going to ingest food. This figure shows the results of counting insects for 472 hours. In both of these experiments, clear diurnal behavior of the test insects was recorded. The activity of the test insects started from around 4:00 p.m., and from 6:00 p.m.
A peak can be seen around 10 o'clock.

After that, the treatment area will see if the activity continues until 2 a.m.
From around 4 a.m., beam activity ceased. On the other hand,
Although the amount of activity is lower in the control plot compared to the peak period, the period of inactivity is shorter than in the treatment plot.

In general, the number of counts in the treated area was lower than that in the control area, and when counting using water for 92 hours, the number of counts was 27.
63 near 515 (repellent rate approximately 63.2%), 4 using bait
The count after 72 hours was 9709.36143 (repellent rate about 73.1%). From this experiment, it can be inferred that the repellency of the test insects in the treated area is high, but the initial count of test insects that come to drink water is high, and the same trend as in the butter trap test can be observed. .

Figure 8 shows the total number of traps caught in each experimental section in the experiment described above. The catch rate in the treatment area was lower than in any of the control areas, approximately 78.1% compared to control area -1.
, about 46.7% compared to control group-2;
The repellency rate was considered to be relatively low. this is,
Since this test was conducted only once, it is thought that the number of counts was high at the beginning of the butter trap and sensor tests.

When looking at this experiment comprehensively, between the dynamic evaluation method mentioned above and the static evaluation method (trap method), the static evaluation method had a more severe evaluation result for the floorboard in question. .

However, even in tests where test insects coming to ingest water were counted using sensors, the initial count was high, ignoring the period of unstable behavior of the test insects until they adapted to the environment. For example, it can be said that the test results for Example Product (3) were even better. In the future, in this type of test, it is thought that there should be sufficient discussion as to which method better reflects reality. This is considered to be an important element depending on the interpretation. In addition, in tests other than the measurement of roach spots, bait or water was set up as an attracting element, but the best result of all tests was compared to the control plot-2 in measuring the number of roach spots where no attracting element was set up. The results of the treatment area (repellent rate 88.1
%), and when considered in conjunction with other test results, it is suggested that there is a correlation between the expression of repellency, the attracting factors, and the diurnal behavior of the test insects.

From such a point of view, continuous measurement tests at short intervals are considered important, but in the test using an optical fiber sensor, which the present inventor conducted for the first time, Being able to confirm the behavior was an unexpectedly great result. We will investigate whether there are any problems with the structure of the sensor itself, such as a single sample insect stagnant at the detection part being counted, and we will capture the macroscopic behavior of living organisms through future improvement evaluations. I am confident that this can be one of the effective methods for achieving this goal.

Regarding the evaluation method, as mentioned above, there are some issues that need to be further investigated, but we are confident that the example product achieved good results throughout the test. Since good results were obtained in both the laboratory-level evaluation and the practical-scale evaluation, the example product, that is, the floorboard of the present invention, is very effective as a building material for the purpose of repelling cockroaches. However, the practical effect of eliminating cockroaches from living spaces can be definitely achieved.

In addition, drug sustained release technology using wood materials itself is interesting from the perspective of formulation technology, and it is thought that it can be used in many fields in the future.

D. Accelerated test of example product (■) The above example product was cut into 5an square pieces, placed in a thermostat at 60°C for 6 months, taken out, and its cockroach repellency was verified. I got a result like this.

The experiment was conducted by placing plaster on the bottom of a cylindrical petri dish with a diameter of 10 um and a depth of 10 um, placing one piece of the above example product (■) that was subjected to the heating exposure test on top of it, and then releasing three black cockroaches into it. , all died within 24 hours. This experiment was repeated five times, with the same results each time.

According to the results of this experiment, the cockroach-repellent decorative board obtained by applying the present invention can maintain cockroach-repellent properties for at least 10 years.

[Effects of the present invention]

As explained above with reference to the examples, the cockroach-repellent decorative board produced by applying the present invention has an effective combination of an insecticide containing a pyrethroid compound as an active ingredient and an insect repellent containing a phenylphenol compound as an active ingredient. It is contained in
By releasing this slowly over a very long period of time, it affects the chemical receptor organs of cockroaches, making them instinctively unable to approach, and can prevent cockroaches from entering indoors. This is an extremely ideal cockroach collection method that requires no cleaning up of dead cockroaches, unlike the cockroach collection method that involves killing or injuring cockroaches, and is harmless to people and livestock, and there are no health and hygiene concerns. It can be said to be a repellent product.

In addition, the method of the present invention is extremely easy to handle, and moreover, by simply subjecting the veneer or veneer to a simple process such as impregnating or coating with a safe pyrethroid compound and phenylphenol compound. Therefore, it is possible to efficiently produce highly effective cockroach-repellent decorative boards without changing the production lines for decorative boards or plywood.

As described above, according to the present invention, it is possible to keep out the indoor pest "cockroach" from indoors, which has been difficult to control in the past, and is extremely useful in terms of health and hygiene.

[Brief explanation of drawings]

Fig. 1 is a partial cross-sectional perspective explanatory diagram showing the structure of the embodiment of the present invention, Fig. 2 is a graph showing the cumulative amount of water consumption by cockroaches over 64 days, and Fig. 3 is a graph showing the amount of food consumed by cockroaches over 42 days. Figure 4 is a graph showing the average number of roach spots per sheet of "filter paper" cumulatively over 8 days. Figure 5 is a graph showing the cumulative number of roach spots per sheet of filter paper. Figure 5 is a graph showing the number of roach spots per sheet of "filter paper" accumulated over 8 days. A bar graph showing the total for each B. Figure 6 is a graph showing the count of test insects that came to ingest water over a period of 92 hours. Figure 7 shows the number of test insects that came to ingest food. A graph showing the results of time counting, Figure 8 is a bar graph showing the total number of cockroaches captured in each experimental area using the adhesive trap method, and Figure 9 is a bar graph showing the total number of cockroaches captured in each area of the experiment using the adhesive trap method. FIG. 1O is an electron micrograph of a cross section of the wood veneer in the fiber direction of Example 2, enlarged using an electron microscope.

Claims (6)

[Claims] (1) Paste the veneer 2 on the surface of the substrate 1, and
In the decorative board with a coating film 3 layered on the surface of the veneer 2 and the coating film 3, an insecticide containing a pyrethroid compound as an active ingredient and an insect repellent containing a phenylphenol compound as an active ingredient are mixed on the veneer 2 and the coating film 3. A cockroach-repellent decorative board characterized by containing a cockroach-repellent consisting of: (2) The cockroach-repellent decorative board according to claim (1), which contains a phenylphenol compound in a proportion of 1 part by weight of a pyrethroid compound and 3 parts by weight as a cockroach repellent. (3) The pyrethroid compound according to claim (1) or (2), wherein the pyrethroid compound is permethrin or cyphenothrin.
Cockroach repellent decorative board. (4) The phenylphenol compound is ortho-phenylphenol, o-phenylphenol, or p-phenylphenol.
The cockroach-repellent decorative board according to any one of claims (1) to (3), which is phenylphenol. (5) When attaching the veneer 2 to the substrate 1, the veneer 2 is impregnated with a treatment liquid containing an insecticide containing a pyrethroid compound as an active ingredient and an insect repellent containing a phenylphenol compound as an active ingredient. After volatilizing the solvent component, this treated veneer 2 is bonded to the substrate 1 to form a bonded plate F, and an insecticide containing a pyrethroid compound as an active ingredient is applied to the surface of the veneer 2 bonded to the bonded plate F. A method for producing a cockroach-repellent decorative board, which comprises applying a finishing paint prepared by adding an insect repellent containing a phenylphenol compound as an active ingredient to form a coating film 3 and finishing the surface. (6) When using plywood as the substrate 1, in which a large number of veneers are laminated, at least the topmost veneer of the substrate 1 contains an insecticide containing a pyrethroid compound as an active ingredient and a phenylphenol compound as an active ingredient. The method for manufacturing a cockroach-repellent decorative board according to claim 5, wherein the decorative board is impregnated with a treatment liquid containing an insect repellent.