WO2013164986A1 - Toothbrush - Google Patents

Toothbrush

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Publication number
WO2013164986A1
WO2013164986A1 PCT/JP2013/062383 JP2013062383W WO2013164986A1 WO 2013164986 A1 WO2013164986 A1 WO 2013164986A1 JP 2013062383 W JP2013062383 W JP 2013062383W WO 2013164986 A1 WO2013164986 A1 WO 2013164986A1
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WO
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Application
Patent type
Prior art keywords
hair
bristle
tufts
toothbrush
bundle
Prior art date
Application number
PCT/JP2013/062383
Other languages
French (fr)
Japanese (ja)
Inventor
徹弥 阿部
Original Assignee
ライオン株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

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    • AHUMAN NECESSITIES
    • A46BRUSHWARE
    • A46BBRUSHES
    • A46B9/00Arrangements of the bristles in the brush body
    • A46B9/02Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups
    • A46B9/04Arranged like in or for toothbrushes

Abstract

The present invention pertains to a toothbrush (1) provided with a handle body (1a), the tip of which is provided with a head section (10). Bundles (12a, 12b) of bristles are embedded, with a density of at least 2,500 bristles per square centimeter, in a bristle-embedding surface (11) on the head section (10). The quotient (A/B) of the perpendicular stiffness (A) of the bristles in newtons per square centimeter and the horizontal stiffness (B) of the bristles in newtons is greater than or equal to 40 cm−2. The present invention makes it possible to provide a toothbrush that has highly flexible bristle tips, has bristle bundles that feel good against the gums, and produces a strong feeling of cleanliness.

Description

toothbrush

The present invention relates to a toothbrush.
This application claims priority based on Japanese Patent Application No. 2012-104548, filed in Japan on May 1, 2012, which is incorporated herein by reference.

The basic function of the toothbrush, there is such as cleaning effect and massage effect in the oral cavity. Toothbrush, therefore to improve the basic functions, and interdental penetration resistance than conventionally added to such cleaning felt, or massaging properties. Then, in order to achieve higher added value of such a toothbrush, the arrangement and shape of the planting pores, brush type or shape, or the tuft bristles trimmer that was complicated combination like shape is generally effective.
However, periodontal disease sufferers, to prevent the occurrence of pain and bleeding like during intraoral cleaning, tend to prefer a soft contact feeling of the toothbrush, such as irritation to the gums is reduced. The toothbrush impoverished to the gums, the hair bundle was planted at high density planting surface, which disperse the printing 掃圧 during intraoral cleaning is known (Patent Document 1).

JP 2012-34845 JP

However, in the conventional high-density flocking toothbrush, because the hair bundle support each other, at the time of cleaning Zenketaba moves integrally tended bristle tips of flexibility is suppressed. When the bristles of the flexibility is inhibited, there may feel stiff hair bundle when the hair bundle is brought into contact with the gums. In other words, there was that feeling hit of the hair bundle to the gums deteriorate.
Further, may be used soft bristle bundle in order to improve the bristles of the flexible, the toothbrush soft bristle bundle, becomes like feel stroking upon brushing the teeth and gums, the cleaning felt is obtained It not, was insufficient realize that brushing the gums in the face.
The present invention has high bristle tips of flexible, high cleaning felt with comfort per tuft to gum is good is obtained, to provide a toothbrush which is excellent in feeling of brushing the gums in terms for the purpose.

The present invention has the following aspects, for example.
[1] includes a handle body head portion at an end thereof, in a toothbrush where bristle tufts of Yoke the flocked surface of said head portion is implanted, and the flocking density of 2500 / cm 2 or more, (JIS S vertical bristle stiffness strength a measured according to 3016 [N / cm 2]) / ( value of the horizontal measured by the following measuring methods bristle stiffness strength B [N]) (a / B) is 40 [1 / cm 2 toothbrush characterized in that] or more.
<Method of measuring the horizontal hair hip strength>
To be slide to slide on the hair bundle sliding under the following conditions (a) ~ (d), the maximum load of the sliding direction applied to the sliding body and the horizontal hair waist strength B.
[Sliding conditions]
(A) a plurality of cylindrical rod-shaped body (stainless steel, diameter: 0.5 mm, maximum surface roughness Ra: 0.4 mm) are arranged in parallel to each other a predetermined distance (3mm spacing between centers of the rod-shaped body) It was used for the sliding body.
(B) arranged parallel to each other and the sliding body and flocked surface.
(C) as the longitudinal direction of the longitudinal and the rod-shaped body of the toothbrush with the rod-shaped body at the position of the bristle surface side 1mm from the tip of the longest tufts contacts are perpendicular to one another, reciprocating the object slide.
And (d) and 10 mm / min a moving speed of the sliding body.
[2] at least one tuft, tufts diameter is equal to or greater than 2.5 mm, toothbrush according to [1].

Further, the present invention has the following aspects.
[1] includes a handle body head portion at an end thereof, in a toothbrush where bristle tufts of Yoke the flocked surface of said head portion is implanted, and the flocking density of 2500 / cm 2 or more, (JIS S vertical bristle stiffness strength a measured according to 3016 [N / cm 2]) / ( value of the horizontal measured by the following measuring methods bristle stiffness strength B [N]) (a / B) is 40 [1 / cm 2 ] greater than or equal toothbrush is,
<Method of measuring the horizontal hair hip strength>
To be slide to slide on the hair bundle sliding under the following conditions (a) ~ (d), the maximum load of the sliding direction applied to the sliding body and the horizontal hair waist strength B.
[Sliding conditions]
(A) 2 or more cylindrical rod-shaped body (stainless steel, diameter: 0.5 mm, maximum surface roughness Ra: 0.4 mm) is arranged in parallel to each other a predetermined distance (3mm spacing between centers of the rod-shaped body) It has been used the slide.
(B) arranged parallel to each other and the sliding body and flocked surface.
(C) as the longitudinal direction of the longitudinal and the rod-shaped body of the toothbrush with the rod-shaped body at the position of the bristle surface side 1mm from the tip of the longest tufts contacts are perpendicular to one another, reciprocating the object slide.
And (d) and 10 mm / min a moving speed of the sliding body.
At least one of [2] tuft, tufts diameter is equal to or greater than 2.5 mm, at least one toothbrush, and (3) hair bundle according to [1], tufts diameter 3. It is at 0mm or more,
Tufts entire profile, the highest bristle length of central portion in the lateral direction of the head portion, a dome-shaped hair length is gradually reduced toward the both sides, toothbrush according to [2].

Toothbrush of the present invention has high bristle tips of flexible, high cleaning felt with comfort per tuft to gum is good can be obtained, is excellent in feeling of brushing the gums in terms.

Is an enlarged plan view showing an embodiment of the toothbrush of the present invention. Is an enlarged side view showing an embodiment of the toothbrush of the present invention. It is a side view showing a method of measuring the vertical hair waist strength. It is a side view showing a method of measuring horizontal hair waist strength. Is a plan view showing a planting hole arrangement of one embodiment of the toothbrush of the present invention. It is a plan view showing a planting hole arrangement of the toothbrush of Example 3. It is a plan view showing a planting hole arrangement of the toothbrush of Example 4. It is a plan view showing a planting hole arrangement of the toothbrush of Example 5. Is a side view showing the dome-shaped profile of one embodiment of the toothbrush of the present invention.

It describes an embodiment of the toothbrush of the present invention.
1 and 2 show the toothbrush of the present embodiment. Toothbrush 1 of this embodiment includes a handle body 1a of the head portion 10 at an end thereof.
2 or more flocking holes 11a in the flocked surface 11 of the head portion 10, 11b are formed, planted pores 11a, the 11b, use hair tufts 12a, 12b are implanted.
Head portion 10 in this embodiment, consists of two or more tufts 12a juxtaposed along the axis L of the handle body 1a, the short-side direction of the head portion 10 (vertical direction to the direction of the axis L) has a central tuft group α located substantially in the center, and an outer bristle bundle group β consisting of two or more tufts 12b which in the lateral direction are implanted across the central bristle bundle group α of the head portion 10.
In α central bristle bundle group, tufts 12a is, the direction of the axis L (i.e., the longitudinal direction L of the toothbrush 1) along which is arranged in a zigzag pattern in the outer tufts group beta, hair bundle 12b It is arranged substantially linearly along the direction of the axis L.
Flocking holes 11b planted hair bundle 12b of outer tufts group β is larger than the planting hole 11a of tufts 12a of central bristle bundle group β is implanted. Therefore, tufts 12b of outer tufts group β is made thicker than the tufts 12a of the central tuft group alpha.

In the toothbrush 1, the ratio of the vertical hair waist strength A horizontal bristle stiffness strength B in the entire hair bundle (A / B) is 40 [1 / cm 2] or more, 45 [1 / cm 2] or more there it is preferable. When A / B is at 40 [1 / cm 2] or more, the bristles of flexible enough, comfortable per tuft to the gums is improved, or the cleaning felt is obtained.
To increase the value of A / B, for example, with a higher flocking density, in order to increase the flexibility of the bristle bundle, thin bristles, may be used to a hair Hair length is long.
Also, A / B is preferably from the viewpoint of practical use is 80 [1 / cm 2] or less, more preferably 60 [1 / cm 2] or less.
Range of A / B is preferably 40 ~ 80 [1 / cm 2 ], and more preferably 45 ~ 60 [1 / cm 2 ].
As described above, the value of (A / B), but "1 / cm 2" is attached as a unit, which is a unit of A is "N / cm 2", the unit of B is "N" This is because it is.

Vertical hair hip strength A is measured in accordance with JIS S 3016. Specifically, as shown in FIG. 3, all the bristle bundles 12a, trimmed to 12b to length 7mm the tufts 12a formed by aligning the cut, with respect to the end face 12c of the 12b, the vertical from the direction, contacting the load member 100 having a pressing surface 101, bristle bundles 12a are pressed at 10 mm / min, bending the 12b. The maximum load applied to the load member 100 is measured at that time, the value determined by the maximum load / flocking area perpendicular bristle stiffness strength A [Unit: N / cm 2] to.
Of the "bristle area" is defined in JIS S 3016, the region of (flocked region) surrounded by a virtual line T obtained when connecting the outermost portion of the hole edge of the bristle holes in the outermost is the area. This virtual line T constitutes a tangent of the flocking holes adjacent to each other.

It is preferred that the vertical bristle stiffness strength A is 45 ~ 75N / cm 2, and more preferably 50 ~ 70N / cm 2. If the vertical hair stiffness strength A is 45N / cm 2 or more, sufficient cleaning feeling can not be obtained, if 75N / cm 2 or less, the bristles of the flexible higher.
To adjust the vertical hair waist strength A is, for example, may be adjusted flocking density.

Horizontal bristles waist strength B is measured by the following method. That is, as shown in FIG. 4, sliding slide the hair bundle condition, the horizontal hair waist strength maximum load of the sliding direction applied to the sliding body of the object to be sliding body following (a) ~ (d) B [unit: N] to.
[Sliding conditions]
(A) 2 or more cylindrical rod-shaped body 201 (stainless steel, diameter: 0.5 mm, maximum surface roughness Ra: 0.4 mm) in parallel constant distance from each other (3mm spacing between centers of the rod-shaped body) using the sliding body 200 arranged.
(B) parallel to each other and a flocked surface 11 and the sliding body 200.
(C) up hair bundle as the longitudinal direction of the longitudinal and the rod-shaped body 201 of the toothbrush 1 with rod-like body 201 at the position of the bristle face 11 side 1mm from the tip of (hair bundle 12a) contacts are perpendicular to each other, to be slide 200 reciprocates.
And (d) and 10 mm / min a moving speed of the slider 200.

Preferably horizontal bristle stiffness strength B is 0.8 ~ 2.5 N, and more preferably 1.0 ~ 1.5 N. If horizontal bristle stiffness strength B is 0.8N or higher, bristle tips of the flexible becomes higher, if less 2.5 N, sufficient cleaning feeling can be easily obtained.
To adjust the horizontal hair waist strength B is, for example, the thickness of the use hair, or may be adjusted in length.

Flocking density in the flocking area is at 2,500 / cm 2 or more, preferably 2800 / cm 2 or more, more preferably 3000 / cm 2 or more. Here, "bristle density" is a value determined by the hair number / flocking area use in the flocking regions. By flocking density is 2500 / cm 2 or more, during intraoral cleaning, gums and can be sufficiently obtained a feeling for brushing a plane.
Moreover, flocking density is preferably from the viewpoint of production is 6000 / cm 2 or less, more preferably 5000 / cm 2 or less.
Range of flocking density is preferably 2500 to 6000 present / cm 2, it is still more preferably more preferably 3000-5000 present / cm 2 is from 2800 to 6000 present / cm 2.

In order to increase the planting density, for example, to increase the flocked number, spacing two flocking holes (planted pores 11a, 11a intervals between planting pores 11b, 11b interval between, or a flocked holes 11a flocking holes the interval) between 11b may be narrow or.
Planting pores 11a, at least one 11b is easily tuft 12a, it is in that it can increase the planting density and thicker 12b, preferably the hole diameter is the 2.5mm or 4.5mm or less, 3 .0mm more than 4.0mm or less is more preferable. Specifically, in this embodiment, it is preferable that the hole diameter of the bristle holes 11b which tufts 12b of outer tufts group β are implanted are less 4.5mm or more 2,5Mm, 3.0 mm or more more preferably equal to or less than 4.0mm.

Tufts 12a, it is preferable that at least one diameter of 12b is 2.5mm or more 4.5mm or less, more preferably 3.0mm or more 4.0mm or less. Here, tufts 12a, the diameter of 12b, tufts 12a at the position of the bristle surface 11, a diameter of 12b. Tufts 12a, if 12b is at 2.5mm or more 4.5mm or less, it becomes easy to densely planted, in particular, if the diameter of the outer tufts group β tufts 12b is 2.5mm or more, high-density flocking and was on the city, it is easy to increase the bristles of a flexible.
In the position of the bristle surface 11, the diameter of the diameter and tufts of planting pores are preferably the same value.

The hair material use constituting the tufts 12a, 12b, for example, polyamide (eg 6-12 nylon, 6-10 nylon), polyester (e.g. polyethylene terephthalate, polybutylene terephthalate, polytrimethylene terephthalate), polyolefin (e.g. polypropylene), or elastomer (e.g. olefinic, styrenic), and a synthetic resin material such as is. These resin materials may be used in combination either singly or in combination.
Further, Yoke may be a multi-core structure having at least one or more layers of the sheath portion provided outside of the the core core.

Hair cross-sectional shape use is preferably circular, but the invention is not necessarily limited to a circle, can be of any shape depending on the intended use of the toothbrush 1. For example, oval, polygonal (e.g., triangular, square, pentagonal, or hexagonal or the like.), Or variants (e.g., star-shaped, three-leaf clover shape, or four-leaf clover shape, or the like.) And the like to be can.

The thickness of each bristles is not particularly limited, in terms of better the comfort per the gums, thin it is preferable. For example, if the cross section is circular is preferably 7mil (1mil = 1 / 1000inch = 0.025mm) or less. If 7mil below, as well as better the comfort per the gums, it is possible to increase the number that can be planted in one of the bristle holes, can be easily densely planted.
The lower limit of the use bristle thickness can be self-supporting in the form of tufts, printing 掃実 feeling, or hair open if ensure durability is not particularly limited.
Yoke constituting the tuft, all may have the same thickness, use hair of two or more different thicknesses may be combined.

In the present embodiment, use bristle constituting the tufts 12a of central bristle bundle group α has been longer than the use bristles constituting the bristle bundle 12b of outer tufts group beta. Therefore, the tip of the central tuft group α is projected from the tip of the outer tufts group beta, easily enters the gap between the teeth and gums, the cleaning of the teeth neck is high.
Are not specifically limited use hair hair length, for example, it is suitably selected in the range of 7 ~ 13 mm.

Further, Yoke is towards the hair gradually hair for its diameter becomes smaller (tapered bristles), a hair outside diameter is substantially identical except for bristles rounding portion (straight hair), or bristles paddle, spherical, or may be any of use hair has a shape such pronged shape. With tapered bristle, bristles are easier to flex, tend to have horizontal hair stiffness strength decreases.

As flocking method tufts can be applied a known method such as a method of implanting Tairasen, or a method of heat welding.
In the method of implanting Tairasen, folded in two by bundling use hair 2 or more, by driving the planting hole across the retainer member to be between the called Tairasen and flocking the tufts on each bristle holes.
Tairasen passes through the center portion of the planting pores, and are Da設 the bristle hole so as to straddle the planting pores.
The material of Tairasen, for example, can be cited a metal such as brass or stainless steel, or other hard even plastics and biodegradable plastics can be mentioned.
Tairasen length and width, or thickness, may be arbitrarily adjusted in accordance with the tuft or bristle holes, but usually, the length of Tairasen is greater than the diameter of the bristle holes, the width of Tairasen are flocking holes It is smaller than the depth. Further, by adjusting the thickness of the Tairasen, it is possible to reduce the gap and attach securely to the tuft bristles in the holes. Further, Tairasen in order to prevent dislodgement from planting pores, the total length of the portion protruding from both sides of the planting pores is preferably 0.3 ~ 0.6 mm.

The material of the handle body 1a, can be determined in consideration of the rigidity and mechanical properties required of the toothbrush 1, etc., for example, include bending strength 3000N / cm 2 than the hard resin is preferably flexural strength 4000 ~ 15000 N / cm 2 of the hard resin. Such hard resin, for example, polypropylene (PP), polyethylene terephthalate (PET), polybutylene terephthalate (PBT), xylylene terephthalate to polycyclo (PCT), polyacetal (POM), polystyrene (PS), acrylonitrile- butadiene-styrene resin (ABS), cellulose propionate (CP), polyarylate, polycarbonate, or acrylonitrile-styrene copolymer resin (AS), and among them PBT is preferable. These may be used alone or in admixture of two or more appropriately.
Moreover, the handle body 1a, in order to improve the gripping properties, e.g. flexible resin such as an elastomer may be covered partially or entirely.

The present invention is not limited to the above embodiment, for example, in all the hole diameter of the bristle holes in the central tuft groups and the outer tufts group identity, hair use of outer tufts group than use hair central tuft group it may be thinner. Also, it may not be divided into a central tuft groups and the outer tufts group, the same all the diameter of the bristle bundles, all use the hair may be the same.
As the overall tufts profile is not particularly limited, as shown in FIG. 9, the highest hair length in the vicinity of the center (central portion) in the lateral direction of the head portion, gradually hair length toward the both sides it may be a domed lower, Hair length may be wholly uniform flat. If it is domed, thereby improving fit and per comfort.
The vicinity of the center (central portion) in the lateral direction of the head portion is in the range of ± 2 mm from the center of the widthwise direction of the head portion, in the case of gradually lowered, the shortest among Zenketaba Hair length there longest least 60% located in well against hair length, preferably 80% to 95%. If 60% or less fit and per comfort is reduced.

The toothbrush of another aspect of the present invention,
A handle body head portion at an end thereof, in a toothbrush where bristle bundle of Yoke is planted on flocked surface of said head portion,
A central tuft group positioned substantially at the center in the lateral direction of the head portion,
And an outer tufts group of two or more tufts in the lateral direction are implanted across the central bristle bundle group head portion,
Flocking density of 2500 / cm 2 or more 4500 present / cm 2 or less,
(JIS S perpendicular bristle stiffness strength A measured according to 3016 [N / cm 2]) / value of (the following measurement method horizontal bristle stiffness strength B measured by [N]) (A / B) is 40 [1 / cm 2] or more 60 [1 / cm 2] or less,
Hair bundle diameter of the outer hair bundle group is at 2.8mm or more 3.5mm or less,
The thickness of the hair use of outer hair bundle group is 4 ~ 7mil,
Hair length of the outer hair bundle group is 11.5 ~ 12.5mm,
Use hair of the outer hair bundle group is straight hair or tapered hair,
Hair bundle diameter of the central hair bundle group is at 1.3mm or more 1.8mm or less,
The thickness of the use hair of the central hair bundle group is 4 ~ 7mil,
Hair length of the central hair bundle group is 12.5 ~ 3mm,
Use hair of the outer hair bundle group is tapered hair,
Tufts entire profile, the highest bristle length of central portion in the lateral direction of the head portion, a dome-shaped hair length is gradually reduced toward the both sides,
The vertical hair hip strength A is 50 ~ 70N / cm 2,
It is preferable that the horizontal bristle stiffness strength B is 1.0 ~ 1.5 N.

Hereinafter, detailed explanation of the present invention by showing Examples, the present invention is not limited by the following description.

(Examples 1 and 2, Comparative Examples 1 and 2)
As shown in FIG. 1, a toothbrush 1 having a central tuft group α consisting of the implanted hairs bundle 12a to planting pores 11a, and an outer bristle bundle group β consisting of the implanted hairs bundle 12b to planting pores 11b It was produced.
Tuft diameter and Yoke in outer tufts group, tuft diameter and Yoke in the central tuft group, tufts overall profile, as well as flocked density was as shown in Table 1. In Table 1, "S" in the hair of shape use indicates the straight hair, "T" indicates a tapered hair. Further, the shortest distance of tufts adjacent to each other was 0.6 mm.
Further, the toothbrush of each example was measured vertical hair waist strength A and horizontal bristle stiffness strength B by the following measuring method to determine the value of (A / B). The results are shown in Table 1.

(Comparative Examples 3 to 5)
The sequence of the hair bundle 12d that combines zigzag-grating as shown in FIG. 5, as shown in Table 1, two or more tufts diameter all the same, use bristle diameter, length and shape and all have the same It was produced by the toothbrush. The shortest distance of the hair bundle adjacent to each other was set to 0.6mm. Also, straight hair used in these Examples were the bristles on the tip side of 1.5mm conical.
For even these toothbrushes, measuring the vertical hair waist strength A and horizontal bristle stiffness strength B by the following measuring method to determine the value of (A / B). The results are shown in Table 1.

(Example 3)
As shown in FIG. 6 was produced with a central bristle bundle group γ consisting of tufts 12e, a toothbrush 2 having a δ outer tufts group consisting of tufts 12f.
Tuft diameter and Yoke in outer tufts group, tuft diameter and Yoke in the central tuft group, tufts overall profile, as well as flocked density was as shown in Table 1.

(Example 4)
As shown in FIG. 7, it was produced with a central bristle bundle group ε consisting tufts 12g, the toothbrush 3 having an outer bristle bundle group ζ consisting tufts 12h.
Tuft diameter and Yoke in outer tufts group, tuft diameter and Yoke in the central tuft group, tufts overall profile, as well as flocked density was as shown in Table 1.

(Example 5)
As shown in FIG. 8, to produce a central tuft group η consisting tufts 12i, the toothbrush 4 having a θ outer tufts group consisting of tufts 12j.
Tuft diameter and Yoke in outer tufts group, tuft diameter and Yoke in the central tuft group, tufts overall profile, as well as flocked density was as shown in Table 1.

For even toothbrush of Examples 3-5, to measure the vertical hair waist strength A and horizontal bristle stiffness strength B by the following measuring method to determine the value of (A / B). The results are shown in Table 1.

<Method of measuring the vertical hair hip strength>
Trimmed so that the Zenketaba a length 7 mm, with respect to the end face of the bristle bundle formed by aligning its cut, from the vertical direction, circular pressing surface (diameter: 5 cm) contacting a load having a , flexed the hair bundle was pressed by further hair bunch of 10mm / min. The maximum load applied to the load body is measured at that time, the value determined by the maximum load / flocking area perpendicular bristle stiffness strength A [Unit: N / cm 2] was.

<Method of measuring the horizontal hair hip strength>
To be slide to slide on the hair bundle sliding under the following conditions (a) ~ (d), and the maximum load of the sliding direction applied to the sliding body and the horizontal hair waist strength B.
[Sliding conditions]
(A) 2 or more cylindrical rod-shaped body (stainless steel, diameter: 0.5 mm, maximum surface roughness Ra: 0.4 mm) is arranged in parallel to each other a predetermined distance (3mm spacing between centers of the rod-shaped body) It has been used the slide.
(B) arranged parallel to each other and the sliding body and flocked surface.
(C) as the longitudinal direction of the longitudinal and the rod-shaped body of the toothbrush with the rod-shaped body at the position of the bristle surface side 1mm from the tip of the longest tufts contacts are perpendicular to one another, reciprocating the object slide.
And (d) and 10 mm / min a moving speed of the sliding body.

Figure JPOXMLDOC01-appb-T000001

For each example and toothbrush Comparative Examples, at the time of cleaning the oral cavity, clean feeling, the hair of the deflection degree, and the feeling of brushing with a surface gums were evaluated by the following methods. Their evaluation results are shown in Table 1.

[Cleaning realize]
10 people monitor using a toothbrush in each example, it was to evaluate the clean feel of the gap between the teeth and gums in the following evaluation criteria. The average point of 10 people monitor 2.5 points or more "A", less than the average score 2.0 points or more 2.5 points "B", less than 2.0 points or more point average point 1.5 "C" , it was less than the average score 1.5 points "D".
(Evaluation criteria)
3 points: feel very feel dirty fell of the gap between the teeth and gums.
2 points: I feel feel dirt of the gap fell between the teeth and gums.
1 point: I do not feel so much the feel of dirt of the gap fell between the teeth and gums.
0 points: dirt of the gap between the teeth and gums do not feel the feeling fell.

[Bristles of the deflection degree]
10 people monitor using a toothbrush in each example, it was to evaluate the bristles of the deflection degree in the following evaluation criteria. The average point of 10 people monitor 2.5 points or more "A", less than the average score 2.0 points or more 2.5 points "B", less than 2.0 points or more point average point 1.5 "C" , it was less than the average score 1.5 points "D".
(Evaluation criteria)
3 points: feel very bristles deflection of.
2 points: I feel the hair deflection of.
1 point: I do not feel so much the hair deflection of.
0 points: do not feel the bristles deflection of.
[Realize that to clean the gums in terms]
Using 10 people monitor the toothbrush of each example, it was the feeling that cleaning the gums in terms evaluated by the following evaluation criteria. The average point of 10 people monitor 2.5 points or more "A", less than the average score 2.0 points or more 2.5 points "B", less than 2.0 points or more point average point 1.5 "C" , it was less than the average score 1.5 points "D".
(Evaluation criteria)
3 points: gums feel very feel to clean in terms of the.
2 points: I feel feel to clean the gums in the face.
1 point: I do not feel so much the feeling to be cleaned by the surface of the gums.
0 points: gums to not feel the feeling to be cleaned by the surface.

Toothbrush bristles density 2500 / cm value of 2 or more (A / B) is 40 [1 / cm 2] or more in which Examples 1-5, high cleaning realized with bristled deflection feeling is good It is obtained, and also excellent in feeling of brushing the gums in terms.
Toothbrush of Comparative Example 1-4, since flocking number was less than 2,500 / cm 2, and insufficient feeling for brushing the gums in terms.
Toothbrush of Comparative Examples 4 and 5, since the value of (A / B) is less than 40 [1 / cm 2], was insufficient feeling deflection of the bristles.

According to the present invention, the bristles of the flexible high, high cleaning felt with comfort per tuft to gum is good is obtained, providing a toothbrush excellent in feeling of brushing the gums in terms it is possible.

1,2,3,4 toothbrush 1a handle body 10 head portion 11a, 11b planted pores 12a, 12b, 12d, 12e, 12f, 12g, 12h, 12i, 12j tufts α, γ, ε, η central tuft group β , δ, ζ, θ outer hair bundle group

Claims (3)

  1. A handle body head portion at an end thereof, in a toothbrush where bristle bundle of Yoke is planted on flocked surface of said head portion,
    And the flocking density of 2500 / cm 2 or more,
    (JIS S perpendicular bristle stiffness strength A measured according to 3016 [N / cm 2]) / value of (the following measurement method horizontal bristle stiffness strength B measured by [N]) (A / B) is 40 [1 / cm 2] or more in a toothbrush.
    <Method of measuring the horizontal hair hip strength>
    To be slide to slide on the hair bundle sliding under the following conditions (a) ~ (d), the maximum load of the sliding direction applied to the sliding body and the horizontal hair waist strength B.
    [Sliding conditions]
    (A) 2 or more cylindrical rod-shaped body (stainless steel, diameter: 0.5 mm, maximum surface roughness Ra: 0.4 mm) is arranged in parallel to each other a predetermined distance (3mm spacing between centers of the rod-shaped body) It has been used the slide.
    (B) arranged parallel to each other and the sliding body and flocked surface.
    (C) as the longitudinal direction of the longitudinal and the rod-shaped body of the toothbrush with the rod-shaped body at the position of the bristle surface side 1mm from the tip of the longest tufts contacts are perpendicular to one another, reciprocating the object slide.
    And (d) and 10 mm / min a moving speed of the sliding body.
  2. At least one tuft, tufts diameter is equal to or greater than 2.5 mm, toothbrush according to claim 1.
  3. At least one of the hair bundle is a hair bundle diameter is 3.0mm or more,
    Tufts entire profile, the highest bristle length of central portion in the lateral direction of the head portion, a dome-shaped hair length is gradually reduced toward the both sides, toothbrush according to claim 2.
PCT/JP2013/062383 2012-05-01 2013-04-26 Toothbrush WO2013164986A1 (en)

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JP2014513370A JP6019111B2 (en) 2012-05-01 2013-04-26 toothbrush
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015098695A1 (en) * 2013-12-26 2015-07-02 ライオン株式会社 Toothbrush and electric toothbrush
WO2016035775A1 (en) * 2014-09-02 2016-03-10 三菱鉛筆株式会社 Toothbrush and method for manufacturing toothbrush
WO2018025751A1 (en) * 2016-08-03 2018-02-08 ライオン株式会社 Toothbrush

Citations (3)

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Publication number Priority date Publication date Assignee Title
JP2006175091A (en) * 2004-12-24 2006-07-06 Lion Corp Toothbrush
JP2012034845A (en) * 2010-08-06 2012-02-23 Lion Corp Toothbrush
JP2012040247A (en) * 2010-08-20 2012-03-01 Lion Corp Toothbrush

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2039047C (en) * 1990-03-29 2003-07-01 John P. Curtis Toothbrush

Patent Citations (3)

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Publication number Priority date Publication date Assignee Title
JP2006175091A (en) * 2004-12-24 2006-07-06 Lion Corp Toothbrush
JP2012034845A (en) * 2010-08-06 2012-02-23 Lion Corp Toothbrush
JP2012040247A (en) * 2010-08-20 2012-03-01 Lion Corp Toothbrush

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015098695A1 (en) * 2013-12-26 2015-07-02 ライオン株式会社 Toothbrush and electric toothbrush
JP2015123245A (en) * 2013-12-26 2015-07-06 ライオン株式会社 Toothbrush and electric toothbrush
CN105828746A (en) * 2013-12-26 2016-08-03 狮王株式会社 Toothbrushes and electric toothbrushes
CN105828746B (en) * 2013-12-26 2017-10-24 狮王株式会社 Toothbrushes and electric toothbrushes
WO2016035775A1 (en) * 2014-09-02 2016-03-10 三菱鉛筆株式会社 Toothbrush and method for manufacturing toothbrush
WO2018025751A1 (en) * 2016-08-03 2018-02-08 ライオン株式会社 Toothbrush

Also Published As

Publication number Publication date Type
CN104284611A (en) 2015-01-14 application
JP6019111B2 (en) 2016-11-02 grant
KR20150014904A (en) 2015-02-09 application
JPWO2013164986A1 (en) 2015-12-24 application
CN104284611B (en) 2016-05-18 grant

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