JPH05123222A - Toothbrush - Google Patents

Abstract

PURPOSE:To prevent bending and opening of bristles to the utmost, to use the toothbrush for a long period, and to beautifully brush teeth without hurting gums by covering at least bristles in the toothbrush with a rubber layer. CONSTITUTION:The toothbrush 1 consists of a brush part 3 formed by providing vertically bristles 2 and a grip part 4, and at least these bristles 2 are covered with a rubber layer 5. In this case, it is allowable that the brush part 3 formed by providing vertically the bristles 2 and the grip part 4 are formed integrally, or it is also allowable that both the parts are constituted of separate bodies, and formed so that this brush part 3 can be attached to the tip part of the grip part 4 so as to be freely attachable and detachable. Even if the bristles 2 start to be bent or opened by using the brush 1, the bristles 2 are returned to its original state by elastic restoring force of this rubber layer 5, and as a result, bending and opening of the bristles 2 are suppressed to the utmost. As a result, the toothbrush 1 can be used extending over a long period, and also, stimulation to gums becomes as small as possible by this rubber layer 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a toothbrush in which the bristles planted in the brush portion are difficult to bend even when the toothbrush is used for a long period of time.

[0002]

2. Description of the Related Art As conventional toothbrushes, there have been proposed many toothbrushes each having a brush portion having bristles planted therein and a grip portion which can be held by a hand.

[0003]

However, although this material uses natural fibers such as ultrafine fibers made of synthetic resin or pig hair as hair, it prevents the hair from bending or opening due to use. No measures have been taken to do so.

For this reason, when this toothbrush is used, that is, in general, when brushing teeth, the direction in which teeth such as the front part of the dentition and the back teeth are aligned with the direction in which the toothbrush is planted is brushed by rotating the bristles. However, the hair begins to bend or open in 2 to 3 days, and this slight bending or opening makes the hair easier to break or easier to open. As a result, the hair may bend after being used for about a week. , It opens.

As described above, when the hair is bent or opened, it becomes difficult to remove the plaque between the interdental part, the teeth and the gums, the food waste, and the plaque, so that the teeth cannot be polished beautifully. As a result, caries and alveolar pyorrhea cannot be prevented.

[0006] That is, if dirt, food waste, and plaque, etc., remain between the teeth and between the teeth and gums, various bacteria will be propagated using these as nutritional sources, which will cause bad breath and pH of saliva.
Is made smaller, that is, it is made acidic, which affects the promotion of tooth decay and alveolar pyorrhea.

For this reason, it is necessary to fold the toothbrush bristles or throw them away to use new ones, but most of the materials used for toothbrushes are produced by the large consumption of fossil resources. The destruction of the global environment due to the large consumption of this fossil resource is of great concern. For this reason, it is necessary to pay attention to such a large consumption of fossil resources as much as possible and prevent the wasteful consumption of the resources as much as possible, but the toothbrushes up to now run counter to this demand.

The present invention has been completed in view of the above technical problems, and by covering at least the bristles of a toothbrush with a rubber layer, even if the bristles start to bend or open due to the use of the toothbrush, this rubber is used. As the result of restoring the hair to its original state by the elastic restoring force of the layer, the bending and opening of the hair are prevented as much as possible, and it is intended to provide a toothbrush that can be used for a long period of time and has minimal irritation to the gums. And

[0009]

In order to achieve the above object, the toothbrush of the present invention comprises a brush portion in which bristles are planted and a grip portion, and at least the bristles are covered with a rubber layer. It is a feature.

In the toothbrush of the present invention, the brush portion formed by implanting bristles and the grip portion may be integrally formed, or may be formed separately, and the brush portion is attached to and detached from the tip portion of the grip portion. It may be formed so that it can be freely attached.

As described above, in the toothbrush, if the brush portion is detachably attachable to the tip of the grip portion, only the brush portion can be discarded according to the state of the bristles, while the grip portion By making the parts usable for a long period of time, it is possible to eliminate the waste of resources as much as possible.

The toothbrush of the present invention has the greatest feature in that at least the bristles of the toothbrush are covered with the rubber layer, and therefore, the same material as the conventional material is used for forming the brush portion and the grip portion. be able to.

The rubber layer used in the present invention is not particularly limited, but specifically, for example, natural rubber, acrylic rubber, acrylonitrile rubber, nitrile rubber, styrene rubber, styrene butadiene rubber, styrene- A homopolymer such as isoprene-styrene block polymer, silicone rubber, urethane rubber, butadiene rubber, isoprene rubber, chloroprene rubber or butyl rubber, or a copolymer of two or more kinds thereof, and a mixture of two or more kinds thereof. Examples include synthetic rubber.

In the present invention, in order to coat the hair with the rubber layer, the hair (fibers) is immersed in a solution of natural rubber or synthetic rubber or a treatment bath of latex, and the hair is passed through a die one by one to obtain an excess rubber. Remove the liquid and form a rubber layer on the surface of the hair (fiber), dry it, or spray a solution of natural rubber or synthetic rubber or latex onto the hair (fiber) and pass it through the dies one by one to remove excess rubber liquid. Is removed, and a rubber layer is formed on the surface of the hair (fiber), dried, and then cut to a required length for use.

By covering the bristles in the brush portion with the rubber layer as described above, even if the bristles start to bend or open due to the use of the toothbrush, the elastic restoring force of the rubber layer restores the bristles to the original state. The bending and opening are suppressed as much as possible, and as a result, the toothbrush can be used for a long period of time, and the gum layer stimulates the gums as little as possible.

In the present invention, the entire brush portion is covered with the rubber layer, but since the hair planting portion is also covered with the rubber layer, opening and pulling out of the hair are prevented as much as possible, so that the length is further increased. It is extremely useful because it can be used over a period of time.

In this case, after the hair covered with the rubber layer is planted in the brush portion, the substrate portion is dipped in a solution or latex of natural rubber or synthetic rubber to be dried, or a solution of natural rubber or synthetic rubber or The latex may be sprayed on the substrate and dried.

Further, in the present invention, a rubber layer containing a bactericide is useful for the following reasons.

That is, when brushing teeth with a toothbrush,
In particular, tooth stains adhere to the bristles or get entangled, but it is difficult to remove the tooth stains attached to the brush part even after washing, especially when the brush part gets entangled. Is more difficult to remove, and as a result, bacteria grow on dirt and food residues remaining on this brush, resulting in extremely unsanitary conditions. Problem does not occur

The bactericide used in the present invention is not particularly limited as long as it has high safety, for example, it can be used as a food additive.
Examples thereof include benzoic acid, sorbic acid, dehydroacetic acid and the like.

The mixing ratio of the bactericide to the rubber layer varies depending on the bactericide used, but it is generally in the range of 0.01 to 10 parts by weight with respect to 100 parts by weight of the rubber layer. , Less than 0.01 may not be able to obtain the desired effects, while more than 10 parts by weight is not desirable because it may be meaningless and may deteriorate the physical properties of the rubber layer.

[0022]

The toothbrush of the present invention has the above-mentioned structure, and by covering at least the bristles of the toothbrush with the rubber layer, even if the bristles start to bend or open due to the use of the toothbrush, the elastic restoring force of the rubber layer The hair is returned to its original state, and this has the effect of preventing bending and opening of the hair as much as possible.

Further, by covering the bristles of the brush portion with the rubber layer in this manner, the surface hardness of the bristles is lowered, so that the bristles are softly contacted with the gum, and therefore the gums are not damaged and The rubber layer has the effect of increasing the surface frictional force of the hair and making it easier to remove dirt between the teeth and between the teeth and gums.

Further, in the present invention, when the entire brush portion is covered with the rubber layer, the hair planting portion is also covered with the rubber layer, so that the elastic restoring force of the rubber layer restores the hair to the original state. Since the hair is returned or the base of the hair is covered with the rubber layer that covers the surface of the substrate, it has the effect of preventing the hair from opening and pulling out as much as possible.

In the present invention, the rubber layer containing a bactericide is useful for the following reasons.

That is, when brushing teeth with a toothbrush,
In particular, tooth stains adhere to the bristles or get entangled, but it is difficult to remove the tooth stains attached to the brush part even after washing, especially when the brush part gets entangled. Is more difficult to remove, and as a result, bacteria grow on dirt and food residues remaining on this brush, resulting in extremely unsanitary conditions. It is extremely hygienic because it does not cause any problems.

[0027]

EXAMPLES The present invention will now be described in detail based on examples, but the present invention is not limited thereto. FIG. 1 is a side view showing an embodiment of the toothbrush of the present invention.
FIG. 7 is an enlarged cross-sectional view of bristles implanted in the brush portion.

1 and 2, a toothbrush 1 according to the present invention comprises a brush portion 3 formed by implanting bristles 2 and a gripping portion 4. At least the bristles 2, in this case, the bristles 2 are a rubber layer 5.
And the bristles 2 are made of ultrafine fibers made of polyamide.

In this case, the brush portion 3 formed by implanting the bristles 2
The grip portion 4 and the grip portion 4 may be integrally formed, or may be separately formed, and the brush portion 3 may be detachably attachable to the tip portion of the grip portion 4. In this example, the brush portion 3 and the grip portion 4 are integrally formed.

As described above, in the toothbrush 1, if the brush portion 3 is detachably attached to the tip of the grip portion 4, only the brush portion 3 can be discarded according to the state of the bristles 2. On the other hand, by making the gripping part 4 usable for a long period of time, it is possible to eliminate waste of resources as much as possible.

The main body of the toothbrush 1 is made of polypropylene dyed blue with a dye / pigment.

The toothbrush 1 of the present invention is most characterized in that the bristles 2 are covered with the rubber layer 5. In this case, the polyamide fiber is placed in a latex bath of nitrile rubber (NBR, solid content concentration is 35% by weight). The bristles 2 made of hair are dipped and passed through a die one by one to remove excess nitrile rubber liquid, and at the same time, a rubber layer 5 is formed on the surface of the bristles (fibers) 2 and then dried.
Then, the one obtained by cutting into the required length was used.

When this toothbrush 1 was used to brush the teeth, almost no bristling was observed even after 20 days of use.

On the other hand, using a commercially available toothbrush 1,
When the teeth were brushed, hair started to open in 2 days, and considerably open hair was observed in 6 days.

By covering the bristles 2 in the brush portion 3 with the rubber layer 5 as described above, even if the bristles 2 start to bend or open due to the use of the toothbrush 1, the elastic restoring force of the rubber layer 5 restores the bristles 2 to the original state. As a result of returning to the state, the bending and opening of the bristles 2 are suppressed as much as possible, and as a result, the toothbrush 1 can be used for a long period of time, and the rubber layer 2 reduces irritation to the gums as much as possible.

Further, in the present invention, as shown in FIG. 3, the brush portion 3 is entirely covered with the rubber layer 5, but the planting portion of the bristles 2 is also covered with the rubber layer 5. Since the opening and the hair removal of the hair 2 are prevented as much as possible, the hair 2 can be used for a longer period of time, which is extremely beneficial.

In this case, after the bristles 2 covered with the rubber layer 5 are planted in the brush part 3, the substrate part 30 is dipped in the nitrile rubber (NBR, solid content concentration is 35% by weight) latex and dried. Alternatively, a solution or latex of natural rubber or synthetic rubber may be sprayed and dried.

It has been confirmed that the toothbrush 1 can be used for a longer period of time because the base end portion of the bristles 2 is covered with the rubber layer 5 on the substrate portion 3 and thus the extreme bristles 2 are hard to come off.

Further, in the present invention, the rubber layer 5 containing a bactericide is useful for the following reason.

That is, when the teeth are brushed with the toothbrush 1, tooth stains adhere to the brush portion 3, especially between the bristles 2 or are entangled, but the tooth stains attached to the brush portion 3 after use. It is difficult to remove even after cleaning, and it is especially difficult to remove the dirt clinging to the brush part 3. Therefore,
Bacteria propagate on the dust and food residues remaining on the toothbrush 1 and become extremely unsanitary.
Incorporation into the solution does not cause such problems.

The bactericide used in the present invention is not particularly limited as long as it is highly safe, for example, it can be used as a food additive.
Examples thereof include benzoic acid, sorbic acid, dehydroacetic acid and the like.

The mixing ratio of the bactericide to the rubber layer varies depending on the bactericide used, but is generally in the range of 0.01 to 10 parts by weight relative to 100 parts by weight of the rubber layer. , Less than 0.01 may not be able to obtain the desired effects, while more than 10 parts by weight is not desirable because it may be meaningless and may deteriorate the physical properties of the rubber layer.

[0043]

The toothbrush of the present invention has the above structure,
By covering at least the bristles of the toothbrush with the rubber layer, even if the bristles start to bend or open due to the use of the toothbrush, the elastic restoring force of the rubber layer restores the bristles to the original state. Since bending and opening are prevented as much as possible, it has the effect of being usable for a long period of time.

Further, by covering the bristles of the brush portion with the rubber layer in this manner, the surface hardness of the bristles is lowered, so that the bristles are softly contacted with the gums, and therefore the gums are not damaged and safety is improved. The rubber layer is high, and the surface frictional force of the hair is increased, so that dirt between the teeth and between the teeth and the gum can be more easily removed, and the teeth can be beautifully polished.

Further, in the present invention, when the entire brush portion is covered with the rubber layer, the hair planting portion is also covered with the rubber layer, so that the elastic restoring force of the rubber layer restores the hair to the original state. Since the hair is returned or the base of the hair is covered with the rubber layer that covers the surface of the substrate, the hair is prevented from opening and the hair is removed as much as possible, so that the hair can be used for a longer period of time.

In the present invention, the rubber layer containing a bactericide is extremely hygienic because it suppresses the growth of bacteria remaining on the brush portion and bacteria such as food residue.

[0047]

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing an enlarged state of the bristles.

FIG. 3 is a side view showing another embodiment of the present invention.

[0048]

[Explanation of symbols]

 1 toothbrush 2 bristles 3 brush part 4 gripping part 5 rubber layer

Claims (4)

[Claims] 1. A toothbrush characterized in that it comprises a brush portion formed by implanting bristles and a grip portion, and at least the bristles are covered with a rubber layer. 2. The toothbrush according to claim 1, wherein the entire brush portion is covered with a rubber layer. 3. The toothbrush according to claim 1, wherein the rubber layer contains a bactericide. 4. The toothbrush according to any one of claims 1 to 3, wherein the brush portion and the grip portion are formed separately.
A toothbrush in which the brush portion is detachably attachable to the tip of the grip portion.