JPS6058201B2 - mosquito coil - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a mosquito coil that uses coffee endodermis powder as a component of the mosquito coil base together with pyrethrum extract lees powder, wood powder, etc. that have been conventionally used as the mosquito coil base material. 11.

The mosquito coils currently in use are made by adding water to a mixture of active insecticidal ingredients such as natural pyrethrins and synthetic pyrethrins, pyrethrum powder, pyrethrum extract lees powder, wood flour, and glue. Then, it is manufactured by extruding it into a sheet, punching it with a die cutter, and drying it.

The conditions required for mosquito coil base material are: 1. Be supplied cheaply and stably.

2. It has excellent mechanical moldability in kneading, extrusion and punching processes.

3. The manufactured incense sticks must be dense and have a smooth surface.

4. When the manufactured incense stick is burned, it should not go out and the burning time should be easily adjusted to about 7 hours.
The smoke must not be harsh and must not emit any strange odor.

6 Maximize the effectiveness of the active ingredients.

The following conditions must be met. Traditionally, the base materials for mosquito coils are pyrethrum extract lees and
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--To (■ First, L's word: When lees powder is burned, it is a raw material with little harshness or off-odor, and has excellent machine moldability in kneading, extrusion and punching processes, but it is stable. Due to the lack of supply, there was a limit to the amount of mosquito coils that could be used to mass produce inexpensive mosquito coils of a certain quality.

As for wood flour, it is cheap to make powder by crushing sawdust that is a by-product when sawing wood, but the quality of the powder varies depending on the type of raw material tree, production area, age, part of the tree, processing process, etc. Since the properties vary, it is difficult to obtain a product of constant quality. Furthermore, it is bulky (apparent specific gravity around 0.2) and difficult to crush, making it difficult to adjust the particle size, making it less suitable for mechanical molding in kneading, extrusion and punching processes, and resulting in products lacking smoothness. In addition, when burned, it should not cause harshness or a strange odor, and the burning speed is fast due to the large voids in wood powder, making it difficult to adjust the burning time, making it difficult to use as a base material for mosquito coils. The limit for the amount was about 30%. In view of the above-mentioned conventional circumstances, the present inventor conducted research on powders of many plant tissues that meet the above-mentioned conditions required as a mosquito coil base material. It was discovered that it has excellent properties as a material.

The structure of a coffee bean is that it has a fleshy outer layer, and below that is a sweet, slimy layer called the pulp.

Inside this pulp is a smooth, straw-colored hard skin called parchment, and beneath that is a thin film called silver skin that encloses the seeds. The endothelium of all kinds of coffee used in the present invention is the above-mentioned parchment (sheep, skin) alone or in combination with silverskin. Coffee beans are produced all over the world, and a large amount of coffee bean shells are produced as a by-product.The outer shells contain a lot of protein and are used as feed and fertilizer.
However, even though endodermis is available in large quantities with a certain quality, no use has been found until now. When coffee bean shells are used as a base material for mosquito coils, the outer coat is black, which makes it difficult to dye, and because it is rich in protein, powder of the outer coat or a powder of a mixture of outer coat and inner coat is difficult to smoke. When smoked, it emits irritation and bad breath, making it unsuitable as an incense stick material.However, the powder of the inner skin of coffee bean husks is light in color and has excellent dyeability, and does not cause any irritation or odor when smoked. do not have. The inner husk of coffee bean shells used in the present invention can be powdered using a grinder conventionally used for manufacturing wood flour, etc. Alternatively, sawdust, chips, etc. can be heated as a raw material. It is also possible to process the inner skin of coffee bean husks in a manner similar to that used to obtain ogalite through pressure processing, and then grind them into powder.

Furthermore, the powder had excellent mechanical moldability when extruding and punching mosquito coils as an incense stick base material, and the finished incense sticks were dense and had a smooth surface.

In addition, it has good flammability and there is no fear of burning out, and the combustion time can be easily adjusted to around 7 hours, and the insecticidal active ingredient is effectively volatilized during combustion. In the following Examples, mosquito coils were manufactured using coffee bean husk endothelium powder as part of the base component, and the results of comparing their properties will be described in detail.

Example Table 1 shows the composition of the mosquito coil base material components.

Add 1 (1) part of water to 100 parts of each mixture uniformly mixed in the above proportions and thoroughly knead it, then form it into a band using an extruder, and then punch it into a spiral shape using a punching machine. , dried in the sun to obtain mosquito coil.

Next, various properties of the mosquito coil manufactured according to Table 1 were measured and are shown in Table 2. From the results in Tables 1 and 2, mosquito coils (B...C...D) in which part or all of the pyrethrum extracted lees powder is replaced with coffee bean shell endothelial powder are different from the conventional mosquito coil base material. Compared to the formulation (4), excellent results were obtained in machine moldability, product surface condition, dyeability, irritation during smoking, and off-odor.

In addition, there was no evidence that the mosquito coil stopped burning midway and disappeared, and no difference was observed in the burning time or the rate of volatilization of the insecticidal ingredient allethrin into the air. The present invention uses the endothelial powder of coffee bean husks as a component of the mosquito coil base material, so it has excellent machine moldability during production and the finished mosquito coil has a good appearance (surface condition and color tone). There are some that provide mosquito repellent incense that does not cause off-odor or irritation even when smoked.

Claims (1)

[Claims] 1. A mosquito coil characterized by using coffee bean shell endothelial powder as a component of the base material of the mosquito coil.