KR200244827Y1 - A Toothbrush Combined With High Tapering Hairs Having Superior Elasticity - Google Patents

Abstract

The present invention relates to a toothbrush in which a highly tapered bristles with high elasticity are implanted, and at the same time, it has adequate elasticity and softness, and has a good sense of brushing and tartar removal, as well as waste of materials generated in manufacturing a conventional highly tapered toothbrush. High failure rate can be completely prevented. To this end, the thickness of the tip of the bristles bristles is less than 0.02mm, the tapered portion is characterized in that the bristles of polyethylene terephthalate or polybutylene terephthalate material within 3.5mm from the end of the bristle.

Description

A Toothbrush Combined With High Tapering Hairs Having Superior Elasticity}

The present invention relates to a toothbrush in which tapered bristles have been planted, and more particularly, to a toothbrush in which highly tapered bristles have been planted with excellent elasticity.

Commonly used monofilament for toothbrushes is made of nylon, which has the advantage of having moderate elasticity and flexibility, but it has strong absorbency and deforms the bristles quickly by use. There is this. In addition, there is a problem that can not give a softness because the thickness should be maintained to some extent in order to maintain a constant elasticity. In general, the nylon bristle is rounded with a slightly polished tip to prevent gum damage when used as shown in FIG.

On the other hand, materials that can be used as monofilaments for toothbrushes other than nylon include polyester-based compounds such as polybutylene terephthalate and polyethylene terephthalate. These materials are not only cheaper and more durable than nylon, but also less absorbent, making them more suitable as bristle material than nylon.

However, because of the high elasticity and lack of flexibility, the gum bristles may damage the gums, so it is customary to use it for a cheap disposable toothbrush or to mix it with a nylon bristle for cost reduction.

In order to take advantage of the monofilament of the polybutylene terephthalate or polyethylene terephthalate and to supplement the above-mentioned disadvantages, there is a tapered bristle that processes the tip of the monofilament into a tapered shape like a needle.

In general, however, the tapered toothbrush is a mechanical method, in which the tip of the bristles is slightly tapered with a blade and a grinder, as shown in FIG. 2. It is not possible to sufficiently compensate for the disadvantages such as renterphthalate.

In order to solve such a problem, there may be mentioned a high tapered bristle by the drug presented by the inventor (Korean Patent No. 130932, hereinafter referred to as 'prior art 1'). This technique cuts 1-4mm longer than the length required to taper polybutylene terephthalate or polyethylene terephthalate, and then immerses it vertically in sulfuric acid to dissolve and remove the extra length. Tapered bristles.

As shown in FIG. 3, the bristles of the technique began to taper from about 4-10 mm at the end, and the tip was tapered at about 0.01 mm in diameter, and also stiffness such as polybutylene terephthalate. By appropriately lowering the softness and at the same time, the end portion is completely tapered, as shown in Figure 3 it is possible to easily remove the tartar in the periodontal pocket. However, the toothbrush according to the prior art 1 has the following problems.

1) The user who is habitual to the elasticity of the conventional nylon toothbrush feels that the brushing of the teeth is too soft.

2) In the manufacturing method, since the bristles are completely tapered by immersing the bristles, the working conditions such as concentration, temperature, and time are very demanding, so that a defective rate of 50% or more occurs until a product of a standard product is obtained.

Solving this problem, Korean Patent No. 261658 (hereinafter referred to as "prior art 2") by the present inventors. This technique cuts the toothbrush head made of polybutylene terephthalate or polyethylene terephthalate to the required size, and then immersed in strong alkali or strong acid solution at 100-180 ° C until the end of both sides dissolved and shortened, and then washed with water. After drying, after planting, the top of the bristles is cut about 0.5-1.5 mm with a cutting grinder, and the tapered bristle having excellent elasticity is polished until the diameter of the bristles reaches 0.04-0.08 mm. As shown.

The bristle according to the prior art 2 has solved the problem of the prior art 1 by the present inventors due to the good elasticity and lack of elasticity, but because the diameter of the bristle end portion is 0.04-0.08 mm, thicker than that according to the prior art 1 It is disadvantageous in removing tartar in the periodontal pocket, and thus has a problem that the price is only 1/4 of the bristles according to the prior art.

The present invention is to solve the problems of the prior art as described above, to provide proper elasticity and at the same time to prevent gum damage when brushing, and to provide a tip tapered bristles suitable for removing tartar in periodontal pockets It aims to do it.

Another object of the present invention is to prevent the loss of material that occurs in the manufacture of highly tapered bristles. Another object of the present invention is to provide bristles with a good brushing feeling after brushing teeth.

1 is a cross-sectional view of a conventional round bristle,

2 is a cross-sectional view of a conventional tapered bristle,

3 is a cross-sectional view of a conventional highly tapered bristle,

4 is a cross-sectional view of a conventional tapered bristle having excellent elasticity,

5 is a cross-sectional view of the highly tapered bristles having excellent elasticity used in the present invention.

The present inventors have continued research to achieve the above object, and found that the bristles having the diameter of the bristles within 0.02 mm and the tapered portions within 3.5 mm from the tips exhibit the desired effect. Became me.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

In the bristles described in FIG. 3 according to the prior art 1, the tapered portion is relatively long, such as 4-10 mm, usually 7-8 mm, from the end in order to have a posterior thickness of 0.01 mm. The reason is that when the brush head is deposited on the chemical, the chemical does not selectively corrode only the end portion, but the overall corrosion. This is because the elasticity is lowered.

The bristles described in FIG. 4 according to the prior art 2 have a rear end of about 0.04-0.08 mm, and the tapered part is about 4-5 mm from the end. Although the bristles have a short tapered length to impart elasticity to the bristles, the thickness of the tip is relatively thick, which is disadvantageous for removing tartar in the periodontal pocket.

5 is a bristle of the present invention, the rear end of the tip is less than 0.02mm, preferably less than 0.01mm, the tapered portion is less than 3.5mm, preferably less than 3mm at the end.

The bristle of the present invention as described above has a smaller thickness of the tip than the bristle according to the prior art 1 is not only advantageous to remove tartar in the periodontal pocket, but also better elasticity than the bristle according to the prior art 2 to improve brushing You can.

In addition, the thickness of the tip is small, and also has the appropriate softness to prevent the bristles from damaging the gums when brushing teeth. The bristle of the present invention having the above characteristics can be said to be an ideal bristle that solves all the disadvantages of the prior art.

An embodiment of the present invention is as follows.

<Example>

In a 1,000 ml beaker equipped with a sandbath, a 50% NaOH solution was placed at a height of 1 cm at the bottom of the beaker, and the solution temperature was 120 ° C. When the bundle of the butylene terephthalate (520) filament cut into 30 mm length was deposited so that 3.5 mm was locked vertically from the end, and after 18 minutes, the end of the filament was melted and shortened. It was just after the shortening. At this time, all the filament bundles were taken out and the opposite side was treated in the same manner.

After immersing the bundled filament bundle in water and washing it sufficiently, it was tied with a rubber band and dried, and then planted with a rice grinder, and after attaching the mesh paper No. 240 to the polishing part of the cutting grinder rotating at 2700 rpm, polishing for 5 seconds After polishing for 5 seconds on the grinder attached with the 320 mesh paper rotating at the same speed, and then grinding the mesh paper for 400 seconds rotating at the same speed for 5 seconds, the thickness of the tip is about 0.01 mm, and the tapered portion A highly tapered toothbrush about 3.0 mm was obtained from this tip.

After toothbrushing was performed on 10 adults after the toothbrushes obtained, evaluation was very good in terms of elasticity, softness, brushing of teeth, and removal of tartar.

Comparative Example

In the same manner as in the above embodiment, the deposition time was set to 18 minutes just before the end of the filament is melted, and the process of polishing with mesh paper No. 360 in the polishing process after planting was omitted.

The thickness of the bristle tip of the obtained toothbrush was 0.04 mm, and the tapered part was 3.5 mm from the tip.

As a result of toothbrushing and evaluation of 10 adults with the obtained toothbrush, it was evaluated that the toothbrush obtained by the examples in elasticity, softness, brushing feeling, and calculus removal ability was insufficient.

As can be seen through the above embodiment, the toothbrush of the present invention is provided with the appropriate elasticity and softness at the same time, the brushing of teeth and removal of tartar is good. In addition, it is possible to completely prevent the waste of materials and the high failure rate that occurred in manufacturing a conventional high tapered toothbrush.

Claims (3)

In a toothbrush with high tapered bristles, the rear end of the bristled bristles is less than 0.02 mm, and the tapered part is within 3.5 mm from the tips of the bristles, of polyethylene terephthalate or polybutylene terephthalate. A highly tapered bristles brushed with excellent elasticity, characterized in that the bristles. The toothbrush of claim 1, wherein the rear end of the bristles is within 0.01 mm. 2. The highly resilient highly tapered bristles implanted toothbrush of claim 1, wherein the tapered portion is within 3.0 mm from the tip of the bristles.