JPH0694408B2 - Insect bedding - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to insect-repellent bedding which can exhibit a stable mites-preventing effect for a long period of time.

[0002]

2. Description of the Related Art Bedclothes such as futons, pillows, pillowcases, and mattresses are humid due to the sweat generated by the human body during sleep, which makes it easy for mites to propagate. Therefore, methods to prevent the reproduction of mites by warm-drying futons or washing them with a circle have been implemented, but they require a lot of labor and equipment. There is also a method to prevent the reproduction of ticks by organic drugs such as organophosphorus, pyrethroid, carbamate, and diazinon, but there are doubts about the safety to the human body and these organic drugs are easily decomposed by high heat. However, there is a drawback that the effect is lost when a futon dryer is used, and the effect is also lost by dry cleaning.

[0003]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems of the prior art, is safe for the human body, and does not lose its effect even when a futon dryer is used or dry-cleaned for a long period of time. The present invention was completed in order to provide insect-proof bedding that can exert a stable anti-mite effect.

[0004]

Means for Solving the Problems The present invention, which has been made to solve the above-mentioned problems, has the following features: 1 to 20 at 20 ° C. on the surface of fibers or foam constituting bedding such as futons, pillows and mattresses.
It is characterized in that a boric acid-based glass powder that dissolves B ₂ O ₃ at a rate of 300 mg / g / Hr is dispersed.

The boric acid glass used in the present invention is B ₂
O ₃ as main components _{B 2 O 3 -SiO 2 -Na 2} O _{-based, B 2 O 3 -Na 2 O} -RO system (R
Is an alkaline earth metal), B ₂ O ₃ -Na ₂ O-Al ₂ O ₃ type glass, etc., and dissolves gradually from the surface in water or in a humid atmosphere to elute B ₂ O _3. Is something that can be done. The elution rate can be controlled by the powder particle size and the glass composition, and in the present invention, it was adjusted so that B ₂ O ₃ can be eluted at a rate of 1 to 300 mg / g / Hr in water at 20 ° C. Use one. However, this elution rate shall be measured using glass powder with a particle size of 500 μm. If the B ₂ O ₃ elution rate of the boric acid-based glass measured in this way is less than 1 mg / g / Hr, it is difficult to obtain a sufficient anti-mite effect, and if it exceeds 300 mg / g / Hr. It is not preferable because it shortens the life.

The above boric acid glass has extremely low toxicity. As a result of an acute oral toxicity test using mice at the Japan Food Analysis Center, B ₂ O ₃ 80 mol%, SiO ₂ 10 mol% for the Na ₂ O 10 mole% of the glass was LD ₅₀ mice = 3250mg / g. Further, with respect to the glass of B ₂ O ₃ 45 mol%, SiO ₂ 40 mol%, and Na ₂ O 15 mol%, LD ₅₀ mouse was 5000 mg / g or more.

According to the present invention, when boric acid glass powder is dispersed in futon cotton fibers, in the case of natural fiber, boric acid glass powder having a particle size of 250 μm or less is used per 1 kg of cotton.
It is preferable to adhere to the fiber surface with a small amount of binder of about 1 to 20 g. As the binder, an acrylic or urethane type binder can be used. On the other hand, when the futon cotton is synthetic cotton such as polyester, acrylic, nylon, etc., in addition to the method of adhering the boric acid glass powder to the fiber surface with the binder, the boric acid glass powder having a particle diameter close to the fiber diameter is used. About 0.5 to 20% by weight of synthetic cotton may be contained so that the boric acid glass powder is exposed on the fiber surface. In this case, if the fiber is drawn, the boric acid-based glass powder can be more reliably exposed on the surface of the fiber. In addition, the fibers may have a double core or structure, and boric acid glass powder may be contained in the outer peripheral portion thereof.

Next, in the case of a duvet cover or a pillow cover, about 0.1 to 20 g of boric acid glass powder per 1 m ² is adhered with an equal amount of binder, or when these are synthetic fibers, the same as above. It is possible to adopt a method of containing the inside. In addition, boric acid glass powder may be adhered to the buckwheat hull of the pillow, or the boric acid glass powder may be contained in a foam such as urethane foam inside the mattress. In the latter case, the boric acid glass powder may be contained in an amount of about 0.5 to 20% by weight in the foaming step. Also,
It may be adhered to the surface of the foam.

[0009]

The insect-repellent bedding of the present invention in which such a boric acid-based glass powder is dispersed on the surface of the fiber or foam constituting the bedding provides the bedding with water from the human body, which makes the bedding suitable for the reproduction of mites. Since the elution amount of B ₂ O ₃ is also increased, it is possible to exert an excellent effect of controlling ticks as shown in the following examples. In addition, this boric acid-based glass is more safe than conventional organic chemicals, and its efficacy is not lost due to heat or dry cleaning, and it is possible to exhibit a stable anti-mite effect for a long period of time. Examples of the present invention will be shown below.

[0010]

[Example 1] 10% by weight of a boric acid-based glass powder having a composition of B ₂ O ₃ 80 mol%, SiO ₂ 10 mol% and Na ₂ O 10 mol% and having a particle size of 10 to 20 μm in 10% by weight of polyester fiber And was drawn 3 times to obtain 3 denier fiber. This boric acid-based glass has a temperature of 20 ° C when the particle size is 500 μm.
B ₂ O ₃ can be eluted at a rate of 300 mg / g / Hr in water. This polyester cotton and cotton were mixed and spun at a ratio of 1: 1 to obtain futon cotton. On the other hand, B ₂ O ₃ 45 mol%,
With a composition of 40 mol% SiO _{2 and} 15 mol% Na ₂ O,
B ₂ at a rate of 14 mg / g / Hr in water at 20 ° C, assuming 500 μm
A boric acid-based glass capable of eluting O ₃ is made into a powder having a particle size of 10 μm or less, and this is mixed with a double amount of an acrylic emulsion binder to prepare a spray solution, and boric acid-based glass per 1 m ² of the surface of the duvet cover is prepared. It was sprayed so that the amount of glass was 1 g. A futon was prepared in this way and a futon cover was made, and the number of mites per 100 cm ² of futon was counted after 6 months, 1 year, and 2 years of actual use. The results shown in Table 1 were obtained. The futon was dried in the sun about once a week.

[0011]

[Table 1]

Example 2 The same spray solution as that used in Example 1 was sprayed on the pillow cover so that the amount of boric acid glass per 1 m ² of the surface was 0.1 g. When this pillow cover was actually used and the number of ticks per 100 cm ² was counted after one month had passed after 6 months, the results shown in Table 2 were obtained. The pillow cover was dry-cleaned about once a week.

[0013]

[0014]

As described above, the insect-control bedding of the present invention is safer than the conventional insect-proof bedding treated with an organic chemical, and loses its effect due to heat or dry cleaning. There is also an advantage that it is possible to exert a stable anti-mite effect for a long period of time.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification number Office reference number FI technical display location B68G 5/00 2113-3K D06M 11/82 // D01F 6/92 301 M 7199-3B D06M 23 / 08

Claims (1)

[Claims] 1. A surface of fibers or foam constituting a bedding such as a futon, a pillow, a mattress, etc., at 1 to 300 mg / g / g at 20 ° C.
Insect-proof bedding, wherein a boric acid-based glass powder that elutes B ₂ O ₃ at a rate of Hr is dispersed.