CN104661563A

CN104661563A - Tapered bristles, method for manufacturing same, and toothbrush provided with tapered bristles

Info

Publication number: CN104661563A
Application number: CN201380050097.0A
Authority: CN
Inventors: 奥田靖
Original assignee: Lion Corp
Current assignee: Lion Corp
Priority date: 2012-09-25
Filing date: 2013-09-25
Publication date: 2015-05-27
Anticipated expiration: 2033-09-25
Also published as: MY194080A; JPWO2014050863A1; JP6101702B2; KR102183281B1; CN104661563B; KR20150060661A; WO2014050863A1

Abstract

Tapered bristles including: a tapered bristle-element assembly in which three to ten resinous tapered bristle elements, each having a tapered part at the distal end, are disposed adjacent to each other; and a resinous covering part for covering all or a part of the side surface of the tapered bristle elements so as to join and integrate the side surfaces of the tapered bristle elements to each other. The covering part covers all or a part of the side surfaces of the tapered bristle elements excluding the tapered parts, and joins the side surfaces. The outer edge part of a portion of each of the tapered bristle elements excluding the tapered parts protrudes outside the covering part.

Description

Tapered bristles, its manufacture method and there is the toothbrush of tapered bristles

Technical field

The present invention relates to and a kind ofly make the tapered bristles of the structure of tip portion branch, its manufacture method and there is the toothbrush of tapered bristles.

The application requires priority based on September 25th, 2012 in No. 2012-211159, the Patent of Japanese publication, and by its content quotation at this.

Background technology

In order to prevention of periodontal disease, as connecing soft-touch and reliably can clean the bristle into advantage to the inboard of oral pocket with high-quality green tea, widely use top by the taper hair of sharpening (super fine, soft fur).As top by an example of sharpening taper hair, there will be a known a kind of monofilament of conical by its shape, this monofilament is the top ends for plastic monofilament, by leave tapered tip 1mm, 3mm, 5mm, 8mm each position bristle footpath specifically for bristle base portion external diameter 25 ~ 35%, 55 ~ 70%, 80 ~ 90%, 90 ~ 100%, and there will be a known a kind of by the toothbrush of this monofilament implanting in the structure of toothbrush handle top ends.

But, by the taper hair of sharpening, owing to being superfine hair, therefore there is the problem dying down to the contact of gum, lack cleaning true feeling on this top.

Therefore, to improve top further by for the purpose of the cleaning true feeling of the taper hair of sharpening, have studied tips branch hair.Its representative construction carries out the structure (with reference to patent document 1) that branch also plants and the structure (with reference to the patent document 2) top of the bristle of island shape structural regime being carried out to branch to the bristle of multiple leaf-shaped section shape.

Top described in patent document 1 is by the taper hair of sharpening, such one structure: adopt cross section be the top ends of the bristle of clover type be branched off into multiple, each top ends of branched hair is made top by the structure of the conical by its shape of sharpening, between its tooth of high-quality green tea doing branched hair into a cone shape, portion's entering is excellent, and can suppress the pain to the generation of tooth meat by the hair hardness of 1 bristle is made suitable value.

Top described in patent document 2 is by the taper hair of sharpening, such one structure: adopt and form the bristle of toothbrush by composite fibre and high-quality green tea ground and is divided into multiple structures, described composite fibre is made up of the top layer of mutually not bonding resin and sandwich layer, also easily can enter the close clearance of oral pocket, and the wiping effect of tooth dirt is also high.

Patent document 1: Japanese Unexamined Patent Publication 2001-169827 publication

Patent document 2: Japanese Unexamined Patent Publication 9-98837 publication

The previous toothbrush described in patent document 1, cleaning property excellence between its tooth, gum is soft contact sense and brush to sweep true feeling also high, but when to plant mao or the time of use, there is the splintery shortcoming of bristle that cross section is clover type.

In addition, the previous toothbrush described in patent document 2, due to the intensive inner side in bristle tips side circumferential position of branched hair, therefore, also exists and arranges branched hair and the shortcoming of true feeling swept by the fully brush that can not obtain that produces.

Summary of the invention

Invent problem to be solved

In order to solve the problem, the present inventor provide a kind of tapered bristles, its manufacture method and have the toothbrush of described tapered bristles, as taper hair, gum is soft contact sense and to enter the entering of oral pocket excellent, true feeling excellence swept by brush, and bristle is difficult to split when to plant mao or when using.

For solving the means of problem

To achieve these goals, the present invention adopts following structure.

The feature of tapered bristles of the present invention is, comprise: tapered bristles body collection portion, this tapered bristles body collection portion is that the top of each described tapered bristles body has tapered portion by the adjacent configuration of resinous tapered bristles body of more than 3, less than 10; And resinous coating portion, this coating portion is by all or part of covering of the side of described tapered bristles body, it is integrated so that the side of described tapered bristles body is engaged with each other, the side except tapered portion of described tapered bristles body is engaged with each other by described coating portion, and is attached to the side of described tapered bristles body with the state that the side external end edge of described each tapered bristles body is projected into described coating outside.

In tapered bristles of the present invention, also the structure with following features can be adopted: described tapered bristles body and described coating portion are made up of different resins, the tapered portion of described tapered bristles is the tapered portion formed by impregnated in lysate, form the solubility of resin-phase for described lysate in described coating portion, larger for the solubility of described lysate than the resin-phase forming described tapered bristles body.

In tapered bristles of the present invention, such structure can be made: described tapered bristles body collection portion, touch integration by the side of described each tapered bristles body each other at the central side of this tapered bristles body collection portion and form, described coating portion is attached to the side of tapered bristles body with the state of the side of the integrated part of the contiguity of the tapered bristles body covering described more than 3.

In tapered bristles of the present invention, also such structure can be made: described tapered bristles body collection portion has the coating portion of the bristle-like covered by the tapered bristles body of more than 3 of described adjacent configuration, described tapered bristles body is set as, its side external end edge is given prominence to from the side in described coating portion, and remaining part is embedded in the coating portion of described bristle-like.

In tapered bristles of the present invention, the outstanding width being projected into the outer edge of the described tapered bristles body in outside from described coating portion may also be 5 ~ 50% of the diameter of described tapered bristles body, and projecting height is 10 ~ 80% of the diameter of described tapered bristles body.

In tapered bristles of the present invention, the part except tapered portion of described tapered bristles body collection portion, the cross section that also can be formed as being formed for tapered bristles body that polygon-shaped or cross section are roughly more than 3 of oval shape by cross section is for roughly petal-shaped.

Toothbrush of the present invention, is characterized in, on head, implanting has the previous tapered bristles described in a certain item.

The manufacture method of tapered bristles of the present invention, it is the method manufacturing tapered bristles, described tapered bristles comprises: tapered bristles body collection portion, this tapered bristles body collection portion is that the top of each described tapered bristles body is made into tapered portion by the adjacent configuration of resinous tapered bristles body of more than 3; And resinous coating portion, the adjacent side surface part of the described tapered bristles body forming described tapered bristles body collection portion is integrated with each other and the adjacent side surface part of described tapered bristles is coated to by this coating portion, described coating portion covers the side except tapered portion of described tapered bristles body, the outer edge of the side except tapered portion of described each tapered bristles body is projected into the outside in described coating portion, the feature of this manufacture method is

With resinous coating parts by adjacent be configured with the raw-material raw material bristle of the bristle of more than 3 cover and formed bristle be coated to body time, as the resin forming the raw-material resin of described bristle and the described coating parts of formation, all use, relative to lysate, there is deliquescent resin, and using such resin: the resin-phase forming described coating parts is larger for the solubility of described lysate than forming the raw-material resin-phase of described bristle for the solubility of described lysate, described bristle raw material are formed after bristle is coated to body described coating parts are attached to, described bristle is coated to after body impregnated in described lysate and mentions again, thus form tapered portion on the raw-material top of described each bristle and form tapered bristles body, and the coating parts around described tapered portion are dissolved removal and forms coating portion, this coating portion covers the side of the described tapered bristles body except described tapered portion.

That is, the present invention is as follows.

[1] tapered bristles, comprising:

Tapered bristles body collection portion, this tapered bristles body collection portion is that the top of each described tapered bristles body has tapered portion by the adjacent configuration of resinous tapered bristles body of more than 3, less than 10; And

Resinous coating portion, this coating portion is by all or part of covering of the side of described tapered bristles body, integrated to be engaged with each other the side of described tapered bristles body,

Described side is engaged with each other by described coating portion by all or part of covering of the side except tapered portion of described tapered bristles body,

Outer edge in the part except tapered portion of described each tapered bristles body is projected into the outside in described coating portion.

[2] tapered bristles as described in [1], described tapered bristles body and described coating portion are made up of different resins,

The tapered portion of described tapered bristles body is the tapered portion formed by impregnated in lysate,

Form the solubility of resin-phase for described lysate in described coating portion, larger for the solubility of described lysate than the resin-phase forming described tapered bristles body.

[3] tapered bristles as described in [1] or [2], described tapered bristles body collection portion, touches integration by the side of described each tapered bristles body each other at the central side of the cross section of this tapered bristles body collection portion and forms,

The side of the part of the contiguity integration of described each tapered bristles body covers by described coating portion.

[4] tapered bristles as described in [1] or [2], described coating portion is the coating portion of the bristle-like covered by each tapered bristles body of described adjacent configuration,

The described outer edge of the part except tapered portion of described tapered bristles body is projected into the outside in described coating portion,

In the part except tapered portion of described tapered bristles body, remaining part except as noted outside edge is embedded in the coating portion of described bristle-like.

[5] tapered bristles according to any one of [1] ~ [4], the outstanding width being projected into the outer edge of the described tapered bristles body in outside from described coating portion is 5 ~ 50% of the diameter of described tapered bristles body, and projecting height is 10 ~ 80% of the diameter of described tapered bristles body.

[6] tapered bristles according to any one of [1] ~ [5], part in described tapered bristles body collection portion except tapered portion is formed as, cross section be polygon-shaped or cross section be more than 3 of oval shape, the tapered bristles body of less than 10 gathers centered by the central shaft of described tapered bristles.

[7] toothbrush, head plants just like the tapered bristles according to any one of [1] ~ [6].

[8] manufacture method for tapered bristles, be the method manufacturing tapered bristles, described tapered bristles comprises:

Outer edge in the part except tapered portion of described each tapered bristles body is projected into the outside in described coating portion,

Described manufacture method comprises:

By being covered by the adjacent raw-material raw material bristle of bristle being configured with more than 3, less than 10 with resinous coating parts, thus form the operation that bristle is coated to body;

Mention again after impregnated in lysate by the tip side described bristle being coated to body, thus form the operation of tapered portion on the raw-material top of described each bristle; And

Dissolved by coating parts around described tapered portion and remove, form the operation in coating portion, raw-material for the bristle with the described tapered portion side surface part except tapered portion covers by this coating portion,

Forming the resin of the raw-material resin of described bristle and the described coating parts of formation, is all have deliquescent resin relative to described lysate,

Form the solubility of resin-phase for described lysate of described coating parts, larger for the solubility of described lysate than the raw-material resin-phase of the described bristle of formation.

The effect of invention

Adopt the present invention, because the top of each tapered bristles body has tapered portion, therefore, the entering entering oral pocket is excellent, and due to coating portion by the tapered bristles of more than 3 integration, therefore, compared with the tapered bristles body of one one independently constructs, a mao hardness can be improved, brush can be improved and sweep true feeling.In addition, owing to forming coating portion except tapered portion other places, therefore, toothpaste can be remained on the part that the tip side in coating portion and tapered portion impale, there is the effect that the active ingredient of toothpaste reliably can be supplied to the inboard of oral pocket.

In addition, when manufacturing toothbrush, the feather planting machine of flat wire type plants hair to head, owing to being the structure concentrated by the tapered bristles body of more than 3 with coating portion, therefore, when to plant mao or the time of use be difficult to the splintery problem of generation high-quality green tea.

Accompanying drawing explanation

Figure 1A is the side view of the toothbrush of the tapered bristles with an embodiment of the present invention.

Figure 1B is the top view of the tapered bristles of an embodiment of the present invention.

Fig. 1 C is the stereogram of the tapered bristles of an embodiment of the present invention.

Fig. 2 A is that the bristle before representing the dissolution process in the method for the tapered bristles manufacturing an embodiment of the present invention is coated to the stereogram of body.

Fig. 2 B is the stereogram of the tapered bristles after representing the dissolution process in the method for the tapered bristles manufacturing an embodiment of the present invention.

Fig. 3 A is the top view of the tapered bristles of another embodiment of the present invention.

Fig. 3 B is the stereogram of the tapered bristles of another embodiment of the present invention.

Fig. 4 A is the top view of the tapered bristles of the another embodiment of the present invention.

Fig. 4 B is the stereogram of the tapered bristles of the another embodiment of the present invention.

Fig. 5 A is the top view of the tapered bristles of the another embodiment of the present invention.

Fig. 5 B is the stereogram of the tapered bristles of the another embodiment of the present invention.

Fig. 6 A is the top view of the tapered bristles of the another embodiment of the present invention.

Fig. 6 B is the stereogram of the tapered bristles of the another embodiment of the present invention.

Fig. 7 A is the top view of the tapered bristles of the another embodiment of the present invention.

Fig. 7 B is the stereogram of the tapered bristles of the another embodiment of the present invention.

Symbol description

A ... toothbrush, 1 ... pieces, 2 ... head, 5 ... tapered bristles, 6 ... tapered bristles body, 6A ... tapered portion, 6a ... inner edge portion, 6B ... matrix part, 6b ... outer edge, 7 ... coating portion, 9 ... tapered bristles body collection portion, 15, 25, 35, 45, 55 ... tapered bristles, 16, 26, 36, 46, 56 ... tapered bristles body, 16A, 26A, 36A, 46A, 56A ... tapered portion, 16a, 26a, 27a, 37a, 47a, 57a ... inner edge portion, 16B, 26B, 36B, 46B, 56B ... matrix part, 16b, 26b, 36b, 46b, 56b ... outer edge, 17, 27, 37, 47, 57 ... coating portion.

Detailed description of the invention

< the 1st embodiment >

Below, the 1st embodiment of the present invention is described in detail with reference to Figure of description.

Figure 1A represents that the implanting of the 1st embodiment has the diagram of the toothbrush A of tapered bristles.This toothbrush A has the head 2, neck 3 and the handle part 4 that plant and have multiple pieces 1, and described head 2, neck 3 and handle part 4 are made up of hard resin material.

Form the hard resin of head 2, neck 3 and handle part 4, acrylic resin or mylar can be used, but also can make the double-colored drip molding surrounding of these hard resins covered with soft resin.

As soft resin, such as, there are the elastomer resins such as ethylene octane copolymer, styrenic elastomer or polyester elastomer.

Here resin used also can use any resin being applicable to general toothbrush.

Plant the pieces 1 of the head 2 in toothbrush A, be that state restraints Zha Duogen to be such as 70 ~ 95% relative to the pack completeness of the area of planting pore by tapered bristles 5 described below, and use diagram abridged lenticular wire and the bundle of tapered bristles 5 be deformed into V shape and implanting in pore is planted in the diagram abridged hammering into head 2.In addition, what the method for the Shu Zhishe of tapered bristles 5 on head 2 is not limited to above-mentioned employing lenticular wire plants hair structure, also can use any one in general toothbrush, carry out planting the method for hair.

The tapered bristles 5 of present embodiment, as shown in Figure 1B and Fig. 1 C amplification, has resinous 4 tapered bristles bodies 6.

Described tapered bristles body 6 is in the adjacent integration of the central side of the cross section of tapered bristles 5, and all or part of of the side of the part of this adjacent integration is covered by resinous coating portion 7 respectively.

The tapered portion 6A that shape is narrowed on top is formed in the tip side of tapered bristles body 6.Part in tapered bristles body 6 except this tapered portion 6A is matrix part 6B.The random cross-sectional shape of the axis of matrix part 6B is identical.

In addition, what is called " shape of cross section is identical " here, as long as substantially the same, such as, also allows the difference of more than 0%, less than 15% in the area of cross section.

It is ovum type that matrix part 6B in the tapered bristles body 6 of present embodiment is such as formed as cross section, namely in the cross section of matrix part 6B, the width of the outer edge 6b of the width being positioned at the inner edge portion 6a of the central part side of tapered bristles 5 and the outer circumferential side being positioned at tapered bristles 5, is formed less than the width of the pars intermedia 6c between them.

In addition, the what is called " ovum type " in present specification and claims, comprises circle, egg type, Long Circle and ellipse etc., preferably at least has a symmetry axis.

In addition, here what is called " width of inner edge portion 6a ", refer to the imaginary circle that the periphery in the coating portion 7 that the center of drawing is identical with the center of tapered bristles 5 is formed, draw the boost line mid point of intersection point of the outer rim of this imaginary circle and matrix part 6B and the center of tapered bristles 5 coupled together, by the maximum of distance coupled together between the intersection point of the outer rim of the orthogonal straight line in the position at 50 ~ 90 μm, the center leaving tapered bristles 5 and matrix part 6B relative to this boost line.

So-called " width of outer edge 6b ", refer to when drawing boost line that the intersection point between the imaginary circle that formed the periphery in coating portion 7 identical with the center of tapered bristles 5 for center and the outer rim of matrix part 6B couples together, by the maximum of the distance that the outer rim being positioned at the part (that is, matrix part 6B be positioned at the part with the central side opposition side of tapered bristles 5 relative to this boost line) in outside relative to this boost line of matrix part 6B couples together with the intersection point of the arbitrary line parallel relative to this boost line.

So-called " width of pars intermedia 6c ", refer to the imaginary circle that the periphery in the coating portion 7 that the center of drawing is identical with the center of tapered bristles 5 is formed, draw the boost line mid point of intersection point of the outer rim of this imaginary circle and matrix part 6B and the center of tapered bristles 5 coupled together, when pars intermedia 6c between inner edge portion 6a with outer edge 6b draws the arbitrary line orthogonal relative to this boost line, by the maximum of distance coupled together between the intersection point of the outer rim of this straight line and matrix part 6B.

In the present embodiment, as shown in Figure 1 C, 4 matrix part 6B gather by the tapered bristles body 6 of tapered bristles 5 centered by the central shaft of tapered bristles 5, and make their integrations and form tapered bristles body collection portion 9, by the side surface part of coating portion 7 this tapered bristles body collection portion 9 of local complexity, thus form tapered bristles 5.In addition, Fig. 1 C only depicts the shape of the end side of tapered bristles 5, and another side of tapered bristles 5 also forms tapered portion 6A and becomes the shape identical with Fig. 1 C.Therefore, be formed with tapered portion 6A in the both end sides of the length direction of tapered bristles 5, and as mentioned above, make tapered bristles 5 be deformed into V-shape and utilize lenticular wire to be planted in head 2, form pieces 1, thus the toothbrush A with multiple pieces 1 of structure shown in Figure 1A can be formed.

In this case, 4 tapered bristles bodies 6 are gathered centered by the central shaft of tapered bristles 5, when the bristle footpath a of tapered bristles body 6 (is equivalent to a) being defined as in Figure 1B, from the distance of the outer edge 6b top ends of center to matrix part 6B of engaged shape (namely, when in the cross section in tapered bristles 5, the imaginary circle that the periphery in the coating portion 7 that the center that draws is identical with the center of tapered bristles 5 is formed, when drawing the boost line mid point of intersection point of the outer rim of this imaginary circle and matrix part 6B and the center of tapered bristles 5 coupled together, intersection point between the outer rim referring to this boost line and matrix part 6B is to the distance at the center of tapered bristles 5) time, this bristle footpath a can be 50 μm ~ about 150 μm, be more preferably the scope that bristle footpath a selects 70 μm ~ about 130 μm.

In addition, the length (that is, the ultimate range of the length direction of tapered portion) of the tapered portion 6A of the tip side of tapered bristles body 6, is preferably about 0.5mm ~ 5.0mm.In addition, here, it is so-called that " " center " of tapered bristles; refer in the cross section of the matrix part of tapered bristles, with whole cross section of the matrix part of the described tapered bristles of external, the interior bag of the outer rim of at least one tapered bristles body and the center of this imaginary circle when drawing imaginary circle with becoming least radius.

In addition, when (namely the diameter of the imaginary circle 8 outermost sidepiece of tapered bristles body 6 and the center of tapered bristles 5 coupled together is set to the bristle footpath b of tapered bristles 5, b=2a) time, bristle footpath b is preferably the scope of 100 μm ~ about 300 μm, is more preferably the scope of 150 μm ~ about 250 μm.

In addition, the toroidal with circular arc is made in the top portion of tapered portion 6A, with the scope of the Breadth Maximum preferably 10 μm ~ about 100 μm of the cross section of the toroidal of described circular arc.Radical for the tapered bristles body 6 forming tapered bristles 5 is not limited to 4 as the present embodiment, preferably 3 to about 5.

As the bristle footpath b of tapered bristles 5, as previously mentioned, when the radical of tapered bristles body 6 becomes many, correspondingly need tapered bristles 5 to run business into particular one, hair hardness dies down, and the gap cleaning between tooth declines.

In 4 matrix part 6B of formation 4 tapered bristles bodies 6, be formed with coating portion 7, with the outside (i.e. side) of the inner edge portion 6a part to pars intermedia 6c part that cover 2 adjacent matrix part 6B.That is, the part of the inner edge portion 6a to pars intermedia 6c of 2 adjacent matrix part 6B, is equivalent to the adjacent side surface part between matrix part 6B, is formed with the coating portion 7 covering this side surface part.In addition, the outer peripheral face in this coating portion 7 makes flexure plane, to form a part for the center periphery identical with the center of described tapered bristles 5, in the present embodiment, preferably as illustrated in figure ib, the outer peripheral face in 4 coating portions 7 is configured to form same periphery.

In tapered bristles body 6, the part being projected into outside from described coating portion 7 is outer edge 6b, the outstanding width W 1 of this outer edge 6b is formed as about 10 ~ 100 μm, and the projecting height H1 being projected into the outer edge 6b of foreign side from described coating portion 7 is formed as about 10 ~ 80 μm.

In addition, what is called " outstanding width " in this specification and claims book, when referring to the boost line that the intersection point when the outer rim of drawing the imaginary circle that formed the periphery in coating portion identical with the center of tapered bristles for center and matrix part couples together, by the maximum of the distance that the outer rim being positioned at the part (that is, matrix part be positioned at the part with the central side opposition side of tapered bristles relative to this boost line) in outside relative to this boost line of matrix part couples together with the intersection point of the arbitrary line parallel relative to this boost line.

What is called " projecting height " in this specification and claims book, refer in the cross section of tapered bristles, the imaginary circle that the periphery in the coating portion that the center that draws is identical with the center of tapered bristles is formed, when drawing the boost line mid point of intersection point of the outer rim of this imaginary circle and matrix part and the center of tapered bristles coupled together, from the distance that the intersection point of the outer rim by this boost line and matrix part and the center of tapered bristles couple together, deduct from the length after the distance of center to the periphery of the imaginary circle be made up of the periphery in described coating portion of tapered bristles.

In addition, because the bristle footpath a of tapered bristles body 6 is about 50 ~ 150 μm, therefore, 5 ~ 50% scopes of the outstanding width W 1 preferably bristle footpath a of tapered bristles body 6.

In addition, 10 ~ 80% scopes of the projecting height H1 preferably bristle footpath a of tapered bristles body 6.

Form the resin in described tapered bristles body 6 and coating portion 7, viewed from processability aspect, preferably use polyester resin.If any: the polyester such as PET (PETG), PTT (PTT), PBT (polybutylene terephthalate (PBT)), PBN (PBN); The polyamide such as 612 nylon, 610 nylon; The resins such as the polyolefin of polyethylene (PE), polypropylene (PP) etc., wherein, preferably polyester viewed from handling ease aspect.Two kinds capable of being combined of these resins use, but from the viewpoint of the cost of investment of manufacturing equipment, maintenance and presentation quality stability, the monofilament be preferably all made up of single material.As the resin forming described tapered bristles body 6 and coating portion 7, be not limited to monofilament separately, also can be made up of the multifilament making multi-ply construction.

In addition, these tapered bristles bodies 6 form tapered portion 6A, also mention again after can impregnated in lysate and carry out taper processing, as the lysate in this situation, owing to using NaOH, hydrolyzable solution, therefore, the resin of the different solubility for these lysates is preferably selected.

In the present embodiment, as the example of combination, when forming tapered bristles body 6 with (PBT), available (PET) forms coating 7.In addition, as the example of another combination, when forming tapered bristles body 6 with (PBN), available (PBT) forms coating 7.

If have the toothbrush A of the tapered bristles 5 shown in Figure 1A ~ C, then owing to having many tapered bristles 5, and this tapered bristles 5 has the structure of 4 tapered bristles bodies 6, and tapered bristles body 6 has tapered portion 6A, therefore, the entering entering oral pocket of tapered bristles body 6 is excellent.Therefore, in the present embodiment, sweeping property of the brush excellence of oral pocket, cleaning true feeling is excellent.In addition, in the present embodiment, owing to 4 tapered bristles bodies 6 being concentrated and using coating portion 7 to cover and integrated, therefore, as the tapered bristles 5 having concentrated 4 tapered bristles bodies 6, compared to the structure with the tapered bristles body of the tapered bristles body 6 of one one being planted independently hair, a mao hardness can be improved, between tooth, sweep true feeling excellence with the brush of tooth bud.

When use has the toothbrush A of the tapered bristles 5 shown in Figure 1A ~ C, toothpaste can be remained on the space between 4 tapered portion 6A, i.e. the part of the top front space in 4 coating portions 7.Therefore, in the present embodiment, there is such effect: the tip side that toothpaste can be remained on tapered bristles 5, and the very dark part active ingredient of toothpaste being reliably supplied to oral pocket.

In addition, when planting hair to the tapered bristles 5 shown in Figure 1B ~ C, Fig. 2 A ~ B, retrain owing to a part of side of 4 tapered bristles bodies 6 being covered with coating portion 7, therefore, when tapered bristles body 6 bending being planted mao tapered bristles body 6 with lenticular wire, there is the effect that 4 tapered bristles bodies 6 can be suppressed with splitting to carry out planting hair separately.

In addition, when using toothbrush A, retraining and the structure covered with the surrounding of coating 7 pairs of tapered bristles bodies 6 by making, thus the phenomenon that tapered bristles 5 may be split when brushing teeth can be suppressed.

< manufacture method >

As an example, the tapered bristles 5 of structure shown in Figure 1B, C can utilize the following method illustrated to manufacture.

First, in order to form tapered bristles body 6, and use (PBT) resin and (PET) resin to carry out spinning to two of abnormity kinds of materials, the publish picture bristle of the shape of cross section shown in 2A of spinning is coated to body 10 thus.Body 10 is coated to from this spinning body bristle that to obtain as Cutting Length be the Len req of the cut length of about 25 ~ 35mm.In the present embodiment, this bristle is coated to body 10 and comprises: raw material bristle 12, this raw material bristle 12 be make the cross section be made up of (PBT) resin be ovum type 4 bristle raw material 11 be coated to by bristle under the state gathered centered by the central shaft of body 10 adjacent and integrally formed; And 4 the coating parts 13 to be made up of (PET) resin, these coating parts 13 are the integrally formed side at raw material bristle 12 with the state of the side local complexity by this raw material bristle 12.

Then, in order to the top ends being coated to body 10 at bristle forms tapered portion, prepare the lysates such as acid, alkaline solution, end bristle being coated to body 10 is immersed in lysate with required time, carries out the lysate process through mentioning, neutralizing, wash process etc.

As an example of lysate process, as the resin forming raw material body brush 12, when using mylar, one end that bristle can be coated to body 10 liquid temperature be immersed in as lysate be in the dissolving layer of 120 ~ 140 DEG C after, carry out the process of being mentioned, described liquid temperature be the dissolving layer of 120 ~ 140 DEG C employ add thermokalite or add hot acid, preferably 40 ~ 50% the NaOH aqueous solution.

Lysate can decide according to resin used, such as, except sodium hydroxide solution, can enumerate as the acid solution such as alkaline solution, sulfuric acid bath and organic solvents etc. such as potassium hydroxide solutions.

Then, by passing through neutralization, washing and drying process, thus the bristle cut length after tapered processing can be done.

When the solution concentration of lysate or heating-up temperature lower than above-mentioned condition time, then the efficiency of heating surface declines, when the solution concentration of lysate or heating-up temperature more too high than above-mentioned condition time, be then difficult to control top by the machining shape of sharpening.

Such as, when with aforesaid NaOH solution to the bristle constructed shown in Fig. 2 A be coated to body 10 carry out lysate process time, because the dissolubility of the coating parts 13 be made up of (PET) resin is higher than the dissolubility of the bristle raw material 11 be made up of (PBT) resin, therefore, while the top of bristle raw material 11 can form tapered portion 6A, the coating parts 13 be present between tapered portion 6A can be dissolved and remove, the tapered bristles 5 of shape shown in Fig. 2 B can be obtained thus.

As described above, be immersed in lysate by end bristle being coated to body 10, thus tapered portion 6A and coating portion 7 can be processed simultaneously, and the tapered bristles 5 of shape shown in Fig. 2 B can be obtained.This is because the resin-phase forming coating portion 7 is higher for the dissolubility of lysate than the resin-phase forming tapered portion 6A for the dissolubility of lysate, by to forming the material of tapered bristles body 6 and forming the Material selec-tion of material in coating portion 7 and lysate combines, having can the effect of the easily and reliably structure shown in shop drawings 2B.

< the 2nd embodiment >

Fig. 3 A ~ B is the diagram of the tapered bristles 15 representing second embodiment of the present invention, and Fig. 3 A is the top view of the tip portion of tapered bristles 15, and Fig. 3 B is the stereogram of tapered bristles 15.

The tapered bristles 15 of the second embodiment of the present invention shown in Fig. 3 A ~ B, plants on the head of hard resin, in order to form toothbrush identically with the tapered bristles 5 of the 1st previous embodiment.

The tapered bristles 15 of present embodiment is as shown in Fig. 3 B amplification, resinous 4 tapered bristles bodies 16 are formed tapered bristles body collection portion 19 in the central side integration of the cross section of tapered bristles 15, and all or part of of the side of the part of this integration is covered by resinous coating portion 17 respectively.The tapered portion 16A that shape is narrowed on top is formed in the tip side of tapered bristles body 16.Part in tapered bristles body 16 except this tapered portion 16A is matrix part 16B.The random cross-sectional shape of the axis of matrix part 16B is identical.In addition, what is called " shape of cross section is identical " here, as long as substantially the same, such as, also allows the difference of more than 0%, less than 15% in the area of cross section.

Matrix part 16B in the tapered bristles body 16 of present embodiment, such as be formed as transverse polygonal shape, namely, in the cross section of matrix part 16B, the width of the pars intermedia 16c of tapered bristles 15, the width of outer edge 16b are formed as becoming large by this order successively gradually than the width of the inner edge portion 16a being positioned at central part side.

In addition, as the transverse polygonal shape in present embodiment, cross section is that 4 matrix part 16B of rectangle are configured to carry out integration in the central part side of the cross section of tapered bristles 15.

In addition, here what is called " width of inner edge portion 16a ", " width of outer edge 16b " and " width of pars intermedia 16c ", be and aforementioned " width of inner edge portion 6a ", the meaning that " width of outer edge 6b " is identical with " width of pars intermedia 6c ".

In the present embodiment, as shown in Figure 3,4 matrix part 16B gather and integrated by the tapered bristles body 16 of tapered bristles 15 centered by the central shaft of tapered bristles 15, and their side is formed tapered bristles 15 with coating portion 17 local complexity.The outstanding width being projected into the outer edge 16b outside coating portion 17 is W2, and projecting height is set to H2.

In addition, although Fig. 3 B only draws the end side of tapered bristles 15, another side of tapered bristles 15 also forms tapered portion 16A and becomes the shape identical with Fig. 3 B.Therefore, be formed with tapered portion 16A in the both end sides of the length direction of tapered bristles 15, make the bundle of tapered bristles 15 be deformed into V-shape and utilize lenticular wire to be planted head in toothbrush, forming toothbrush thus.

In this case, 4 tapered bristles bodies 6 are gathered centered by the central shaft of tapered bristles 15, when the bristle footpath a of tapered bristles body 16 is defined as, from the distance of the outer edge 16b top ends of center to matrix part 16B of engaged shape (namely, when in the cross section in tapered bristles 5, the imaginary circle that the periphery in the coating portion 17 that the center that draws is identical with the center of tapered bristles 15 is formed, when drawing the boost line mid point of intersection point of the outer rim of this imaginary circle and matrix part 6B and the center of tapered bristles 15 coupled together, intersection point between the outer rim referring to this boost line and matrix part 16B is to the distance at the center of tapered bristles 5) time, this bristle footpath a can be 50 μm ~ about 150 μm, be more preferably the scope that bristle footpath a selects 70 μm ~ about 130 μm.In addition, the length (that is, the ultimate range of the length direction of tapered portion) of the tapered portion 16A of the tip side of tapered bristles body 16, is preferably about 0.5mm ~ 5.0mm.

In addition, when the diameter of the imaginary circle 18 outermost sidepiece of 4 tapered bristles bodies 16 and the center of tapered bristles 15 coupled together is set to the bristle footpath b of tapered bristles 15, bristle footpath b is preferably the scope of 100 μm ~ about 300 μm, is more preferably the scope of about 150 ~ 250 μm.

In addition, the toroidal with circular arc is made in the top portion of tapered portion 16A, with the scope of the Breadth Maximum preferably 10 μm ~ about 100 μm of the cross section of the toroidal of described circular arc.

In the tapered bristles 15 shown in Fig. 3 A ~ B, identical with the tapered bristles 5 of the 1st previous embodiment, owing to being taper hair, therefore also easy by tapered portion 16A insertion oral pocket.Therefore, the entering entering oral pocket of tapered bristles 15 is excellent, sweeping property of the brush excellence in oral pocket, and cleaning true feeling is excellent.In addition, in the present embodiment, due to 4 tapered bristles body 16 integrations are formed tapered bristles 15, therefore, identical with the 1st embodiment, also can obtain the high effect of mao hardness.In addition, in the present embodiment, toothpaste can be remained on the spatial portion between 4 tapered portion 16A, identical with previous tapered bristles 5, the effect that tapered bristles 15 can be suppressed to split when also can obtain the effect that toothpaste can be supplied to portion in oral pocket and plant hair and use.

In addition, for the manufacture method of the tapered bristles 15 shown in Fig. 3 A ~ B, the equal method of the available manufacture method with being described based on previous Fig. 2 A ~ B manufactures.

In addition, for forming the radical of the tapered bristles body 16 of tapered bristles 15, also suitably can change as long as have effect of the present invention, such as, may also be 2 ~ 10.

< the 3rd embodiment >

Fig. 4 A ~ B is the diagram of the tapered bristles 25 representing third embodiment of the present invention, and Fig. 4 A is the top view of the tip portion of tapered bristles 25, and Fig. 4 B is the stereogram of tapered bristles 25.

The tapered bristles 25 of the 3rd embodiment shown in Fig. 4 ~ B is identical with the tapered bristles of previous embodiment 1 and 2, by implanting on the head of hard resin, in order to form toothbrush.

The tapered bristles 25 of present embodiment is as shown in Fig. 4 A enlarged drawing, resinous 3 tapered bristles bodies 26 are formed tapered bristles body collection portion 29 in the central side integration of the cross section of tapered bristles 25, and all or part of of the side of the part of this integration is covered by resinous coating portion 27 respectively.

The tapered portion 26A that shape is narrowed on top is formed in the tip side of tapered bristles body 26.Part in tapered bristles body 26 except this tapered portion 26A is matrix part 26B.The random cross-sectional shape of the axis of matrix part 26B is identical.

Matrix part 26B in the tapered bristles body 26 of present embodiment, such as be formed as transverse polygonal shape, namely, in the cross section of matrix part 26B, the width of the pars intermedia 16c of tapered bristles 25, the width of outer edge 16b are formed as becoming large by this order successively gradually than the width of the inner edge portion 26a being positioned at central part side.In addition, as the transverse polygonal shape in present embodiment, cross section is that 3 matrix part 26B of rectangle are configured to carry out integration in the central part side of the cross section of tapered bristles 25.

In addition, what is called " width of inner edge portion 26a " in present embodiment, " width of outer edge 26b " and " width of pars intermedia 26c ", be and aforementioned " width of inner edge portion 6a ", the meaning that " width of outer edge 6b " is identical with " width of pars intermedia 6c ".

In the tapered bristles body 26 of present embodiment, as shown in Figure 4 A, 3 matrix part 26b gather and integrated by the tapered bristles body 26 of tapered bristles 25 centered by the central shaft of tapered bristles 25, and with coating portion 27, their side local complexity are formed tapered bristles 25.

The outstanding width being projected into the outer edge 26b outside coating portion 27 is W2, and projecting height is set to H2.

In addition, Fig. 4 A only draws the end side of tapered bristles 25, but another side of tapered bristles 25 also forms tapered portion 26A etc. and becomes the shape identical with Fig. 4 B.Therefore, be formed with tapered portion 26A in the both end sides of the length direction of tapered bristles 25, and make the bundle of tapered bristles 25 be deformed into V-shape and utilize lenticular wire to be planted head in toothbrush, form toothbrush thus.

The structure of the tapered bristles 25 shown in Fig. 4 A ~ B replaces the tapered bristles body 16 be made up of 4 matrix part 16b and the example that is made up of 3 matrix part 26b of being located at the tapered bristles 15 shown in Fig. 3 A ~ B.

In this case, 3 tapered bristles bodies 26 are gathered centered by the central shaft of tapered bristles 25, when the bristle footpath a of tapered bristles body 26 is defined as, from the distance of the outer edge 26b top ends of center to matrix part 26B of engaged shape (namely, when in the cross section in tapered bristles 25, the imaginary circle that the periphery in the coating portion 27 that the center that draws is identical with the center of tapered bristles 25 is formed, when drawing the boost line mid point of intersection point of the outer rim of this imaginary circle and matrix part 26B and the center of tapered bristles 25 coupled together, intersection point between the outer rim referring to this boost line and matrix part 26B is to the distance at the center of tapered bristles 25) time, this bristle footpath a can be 50 μm ~ about 150 μm, be more preferably the scope that bristle footpath a selects 70 μm ~ about 130 μm.In addition, the length (that is, the ultimate range of the length direction of tapered portion) of the tapered portion 26A of the tip side of tapered bristles body 26, is preferably about 0.5mm ~ 5.0mm.

When the diameter of the imaginary circle 28 outermost sidepiece of 3 tapered bristles bodies 26 and the center of tapered bristles 25 coupled together is set to the bristle footpath b of tapered bristles 25, bristle footpath b is preferably the scope of 100 μm ~ about 300 μm, is more preferably the scope of about 150 ~ 250 μm.In addition, the toroidal with circular arc is made in the top portion of tapered portion 26A, with the scope of the Breadth Maximum preferably 10 μm ~ about 100 μm of the cross section of the toroidal of described circular arc.

In the tapered bristles 25 shown in Fig. 4 A ~ B, identical with the tapered bristles 5 of the 1st previous embodiment, owing to being taper hair, therefore also easy by tapered portion 26A insertion oral pocket.Therefore, the entering entering oral pocket of tapered bristles 25 is excellent, sweeping property of the brush excellence in oral pocket, and cleaning true feeling is excellent.In addition, in the present embodiment, due to 3 tapered bristles body 26 integrations are formed tapered bristles 25, therefore, identical with the 1st embodiment, the effect that mao hardness is high can be obtained.In addition, in the present embodiment, toothpaste can be remained between 3 tapered portion 26A, identical with previous tapered bristles 5, also can obtain the effect that toothpaste can be supplied to portion in oral pocket and plant the effect that Mao Shike suppresses tapered bristles to be split.

< the 4th embodiment >

Fig. 5 A ~ B is the diagram of the tapered bristles 35 representing fourth embodiment of the present invention, and Fig. 5 A is the top view of the tip portion of tapered bristles 35, and Fig. 5 B is the stereogram of tapered bristles 35.

The tapered bristles 35 of the 4th embodiment shown in Fig. 5 A ~ B is identical with the tapered bristles of previous embodiment 1 ~ 3, by the head planted in hard resin, in order to form toothbrush.

The structure of the tapered bristles 35 shown in Fig. 5 A ~ B replaces 4 tapered bristles bodies 6 being located at the tapered bristles 5 of the 1st embodiment shown in Figure 1A ~ C and is provided with the example of 3 tapered bristles bodies 36.

The tapered bristles 35 of present embodiment is as shown in Fig. 5 B enlarged drawing, resinous 3 tapered bristles bodies 36 are formed tapered bristles body collection portion 39 in the integration of the central part side of the cross section of tapered bristles 35, and all or part of of the side of the part of this integration is covered by resinous coating portion 37 respectively.

The tapered portion 36A that shape is narrowed on top is formed in the tip side of tapered bristles body 36.Part in tapered bristles body 36 except this tapered portion 36A is matrix part 36B.The random cross-sectional shape of the axis of matrix part 36B is identical.

Matrix part 36B in the tapered bristles body 36 of present embodiment, such as being formed as cross section is ovum type, namely, in the cross section of matrix part 36B, the width of the pars intermedia 16c of tapered bristles 35 is formed larger than the width of the width of inner edge portion 36a and outer edge 36b that are positioned at central part side.

In addition, what is called " width of inner edge portion 36a " in present embodiment, " width of outer edge 36b " and " width of pars intermedia 36c ", be and aforementioned " width of inner edge portion 6a ", the meaning that " width of outer edge 6b " is identical with " width of pars intermedia 6c ".

In the tapered bristles body 36 of present embodiment, as shown in Figure 5A, 3 outer edge 36b gather and integrated by the tapered bristles body 36 of tapered bristles 36 centered by the central shaft of tapered bristles 35, and with coating portion 37, their side local complexity are formed tapered bristles 35.The outstanding width being projected into the outer edge 36b outside coating portion 37 is W1, and projecting height is set to H1.In addition, Fig. 5 B only draws the end side of tapered bristles 35, but another side of tapered bristles 35 also forms tapered portion 36A and becomes the shape identical with Fig. 5 B.Therefore, be formed with tapered portion 36A in the both end sides of the length direction of tapered bristles 35, and make the bundle of tapered bristles 35 be deformed into V-shape and utilize lenticular wire to be planted head in toothbrush, form toothbrush thus.

In this case, 3 tapered bristles bodies 36 are gathered centered by the central shaft of tapered bristles 35, when the bristle footpath a of tapered bristles body 36 is defined as, from the distance of the outer edge 36b top ends of center to matrix part 36B of engaged shape (namely, when in the cross section in tapered bristles 35, the imaginary circle that the periphery in the coating portion 37 that the center that draws is identical with the center of tapered bristles 35 is formed, when drawing the boost line mid point of intersection point of the outer rim of this imaginary circle and matrix part 36B and the center of tapered bristles 35 coupled together, intersection point between the outer rim referring to this boost line and matrix part 36B is to the distance at the center of tapered bristles 35) time, this bristle footpath a can be 50 μm ~ about 150 μm, be more preferably the scope that bristle footpath a selects 70 μm ~ about 130 μm.In addition, the length (that is, the ultimate range of the length direction of tapered portion) of the tapered portion 36A of the tip side of tapered bristles body 36, is preferably about 0.5mm ~ 5.0mm.

In addition, when the diameter of the imaginary circle 38 outermost sidepiece of 3 tapered bristles bodies 36 and the center of tapered bristles 35 coupled together is set to the bristle footpath b of tapered bristles 35, bristle footpath b is preferably the scope of 100 μm ~ about 300 μm, is more preferably the scope of about 150 ~ 250 μm.

In addition, the toroidal with circular arc is made in the top portion of tapered portion 36A, with the scope of the Breadth Maximum preferably 10 μm ~ about 100 μm of the cross section of the toroidal of described circular arc.

In the tapered bristles 35 shown in Fig. 5 A ~ B, identical with the tapered bristles 5 of the 1st previous embodiment, owing to being taper hair, therefore also easy by tapered portion 36A insertion oral pocket.Therefore, in the present embodiment, the entering entering oral pocket is excellent, sweeping property of the brush excellence in oral pocket, and cleaning true feeling is excellent.In addition, in the present embodiment, due to 3 tapered bristles body 36 integrations are formed tapered bristles 35, therefore, identical with the 1st embodiment, the effect that mao hardness is high can be obtained.In addition, in the present embodiment, toothpaste can be remained between 3 tapered portion 36A, identical with the 1st embodiment, also can obtain the effect that toothpaste can be supplied to portion in oral pocket and plant the effect that Mao Shike suppresses tapered bristles to be split.

< the 5th embodiment >

Fig. 6 A ~ B is the diagram of the tapered bristles 45 of fifth embodiment of the present invention, and Fig. 6 A is the top view of the tip portion of tapered bristles 45, and Fig. 6 B is the stereogram of tapered bristles 45.

The tapered bristles 45 of the 5th embodiment shown in Fig. 6 A ~ B is identical with the tapered bristles of previous embodiment 1 ~ 4, by implanting on the head of hard resin, in order to form toothbrush.

The tapered bristles 45 of present embodiment is as shown in Fig. 6 A, B, and described tapered bristles body 46 is in the adjacent integration of the central side of the cross section of tapered bristles 45, and all or part of of the side of the part of this adjacent integration is covered by resinous coating portion 47 respectively.In addition, the coating portion 47 in present embodiment is coating portions of bristle-like.

In addition, what is called " the coating portion of bristle-like " here instigates a part for tapered bristles to be exposed and the part covered by bristle etc. except exposed division.

The tapered portion 46A that shape is narrowed on top is formed in the tip side of tapered bristles body 46.Part in tapered bristles body 46 except this tapered portion 46A is matrix part 46B.The random cross-sectional shape of the axis of matrix part 46B is identical.

In addition, what is called " shape of cross section is identical " here, as long as substantially the same, such as, also allows the difference of more than 0%, less than 15% in the area of cross section.The cross section of matrix part 46B is triangle.In addition, what is called " triangle " here, refers to the polygon formed with three line segments being connected them by 3 that do not locate on the same line, and also can be set to vertex of a triangle by described 3, apex has circular arc.

At matrix part 46B, the part of its leg-of-mutton base side is set to inner edge portion 46a, inner edge portion 46a configures towards the central part side of the cross section of tapered bristles 45, the part of the summit side contrary with described leg-of-mutton base side is set to outer edge 46b, and outer edge 46b configures toward the outer side in the cross section of tapered bristles 45.In addition, matrix part 46B, is projected into the state outside coating portion 47 with outer edge 46b and is embedded in coating portion 47.

The outstanding width being projected into the outer edge 46b outside coating portion 47 is W3, and projecting height is H3.

In the example of Fig. 6 A, be configured with the tapered bristles body 46 at 90 degree of intervals around the inside in the coating portion 47 of the bristle-like of circular cross-section.

In addition, for forming the radical of the tapered bristles body 46 of tapered bristles 45, as long as have effect of the present invention, also can suitably change.

In addition, the configuration of tapered bristles body 46, as long as have effect of the present invention, also can suitably change, and such as, both can configure at equal intervals, is not also configure at equal intervals.

In addition, Fig. 6 B only draws the end side of tapered bristles 45, but another side of tapered bristles 45 also forms tapered portion 46A etc. and becomes the shape identical with Fig. 6 B.Therefore, be formed with tapered portion 46A etc. in the both end sides of the length direction of tapered bristles 45, and make the bundle of tapered bristles 45 be deformed into V-shape and utilize lenticular wire to be planted head in toothbrush, form toothbrush thus.

In this case, the bristle footpath a of tapered bristles body 46, respectively in 4 tapered bristles bodies 46, be equivalent to the distance on base to the summit from cross section being the matrix part 46B of triangle, bristle footpath a can be 50 μm ~ about 150 μm, is more preferably the scope that bristle footpath a selects 70 μm ~ about 130 μm.In addition, length (that is, the ultimate range on the length direction of tapered portion) preferably about the 0.5mm ~ 5.0mm of the tapered portion 46A of the tip side of tapered bristles body 46.

In addition, when the diameter of the imaginary circle 48 outermost sidepiece of each tapered bristles body 46 and the center of tapered bristles 45 coupled together is set to the bristle footpath b of tapered bristles 45, bristle footpath b is preferably the scope of 100 μm ~ about 300 μm, is more preferably the scope of about 150 ~ 250 μm.

In addition, the top of tapered portion 46A makes the toroidal with circular arc, with the scope of the Breadth Maximum preferably 10 μm ~ about 100 μm of the cross section of the toroidal of described circular arc.

In tapered bristles 45 shown in Fig. 6 A ~ B, identical with the tapered bristles of previous embodiment, owing to being taper hair, therefore also easy by tapered portion 46A insertion oral pocket.Therefore, in the present embodiment, the entering entering oral pocket is excellent, sweeping property of the brush excellence in oral pocket, and cleaning true feeling is excellent.In addition, in the present embodiment, due to 4 tapered bristles body 46 integrations are formed tapered bristles 45, therefore, identical with the 1st embodiment, the effect that mao hardness is high can be obtained.In addition, in the present embodiment, toothpaste can be remained between 4 tapered portion 46A, therefore identical with the 1st embodiment, also can obtain the effect that toothpaste can be supplied to portion in oral pocket and plant the effect that Mao Shike suppresses tapered bristles to be split.

< the 6th embodiment >

Fig. 7 A ~ B is the diagram of the tapered bristles 55 representing sixth embodiment of the present invention, and Fig. 7 A is the stereogram of the tip portion of tapered bristles 55, and Fig. 7 B is the top view of tapered bristles 55.

The tapered bristles 55 of the 6th embodiment shown in Fig. 7 A ~ B is identical with the tapered bristles of previous embodiment 1 ~ 5, by the head planted in hard resin, in order to form toothbrush.

The tapered bristles 55 of present embodiment is as shown in Fig. 7 A, B, and 4 tapered bristles bodies 56 are in the adjacent integration of the central side of the cross section of tapered bristles 55, and all or part of of the side of the part of this adjacent integration is covered by resinous coating portion 57 respectively.In addition, the coating portion 57 of present embodiment is the coating portion of bristle-like.

The tapered portion 56A that shape is narrowed on top is formed in the tip side of tapered bristles body 56.Part in tapered bristles body 56 except this tapered portion 56A is matrix part 56B.The random cross-sectional shape of the axis of matrix part 56B is identical.

The cross section of matrix part 56B is circular.In addition, in the circle of matrix part 56B, by the central part side of the cross section of tapered bristles 55 to part be set to inner edge portion 56a, the part of its opposition side is set to outer edge 56b.Matrix part 56B is embedded in coating portion 57 with the outer edge 56b state be projected into outside coating portion 57.

The outstanding width being projected into the outer edge 56b outside coating portion 57 is W4, and projecting height is H4.

In the example of Fig. 7 A, be configured with the tapered bristles body 56 at 90 degree of intervals around the inside in the coating portion 57 of the bristle-like of circular cross-section.

In addition, for forming the radical of the tapered bristles body 56 of tapered bristles 55, as long as have effect of the present invention, also can suitably change.

In addition, the configuration of tapered bristles body 56, as long as have effect of the present invention, also can suitably change, and such as, both can configure at equal intervals, is not also configure at equal intervals.

In addition, Fig. 7 B only draws the end side of tapered bristles 55, but another side of tapered bristles 55 also forms tapered portion 56A and becomes the shape identical with Fig. 7 B.Therefore, be formed with tapered portion 56A in the both end sides of the length direction of tapered bristles 55, and make the bundle of tapered bristles 55 be deformed into V-shape and utilize lenticular wire to be planted head in toothbrush, form toothbrush thus.

In this case, the bristle footpath a of tapered bristles body 56, respectively in 4 tapered bristles bodies 56, is equivalent to the diameter that cross section is circular matrix part 56B, bristle footpath a can be 50 μm ~ about 150 μm, is more preferably the scope that bristle footpath a selects 70 μm ~ about 130 μm.In addition, length (that is, the ultimate range on the length direction of tapered portion) preferably about the 0.5mm ~ 5.0mm of the tapered portion 56A of the tip side of tapered bristles body 56.

In addition, when the diameter of the imaginary circle 58 that the outermost sidepiece of tapered bristles body collection portion 59 formed by 4 tapered bristles bodies 56 and the center of tapered bristles 55 are coupled together is set to the bristle footpath b of tapered bristles 55, bristle footpath b is preferably the scope of 100 μm ~ about 300 μm, is more preferably the scope of about 150 ~ 250 μm.

In addition, the top of tapered portion 56A makes the toroidal with circular arc, with the scope of the Breadth Maximum preferably 10 μm ~ about 100 μm of the cross section of the toroidal of described circular arc.

In tapered bristles 55 shown in Fig. 7 A ~ B, identical with the tapered bristles of previous embodiment, owing to being taper hair, therefore also easy by tapered portion 56A insertion oral pocket.Therefore, in the present embodiment, the entering entering oral pocket is excellent, sweeping property of the brush excellence in oral pocket, and cleaning true feeling is excellent.In addition, in the present embodiment, due to 4 tapered bristles body 56 integrations are formed tapered bristles 55, therefore, identical with the 1st embodiment, the effect that mao hardness is high can be obtained.In addition, in the present embodiment, toothpaste can be remained between 4 tapered portion 56A, therefore identical with the 1st embodiment, also can obtain the effect that toothpaste can be supplied to portion in oral pocket and plant the effect that Mao Shike suppresses tapered bristles to be split.

Embodiment

< embodiment 1>

Use the tapered bristles of structure like this: the tapered bristles being shape shown in Figure 1B ~ C, specifically, 4 tapered bristles bodies of ovum type that to be the cross section be made up of PBT resin be, engage at the central side of the cross section of tapered bristles, and with the structure that a part of side of these 4 tapered bristles bodies covers by the coating be made up of PET resin, and respectively there is tapered portion at the both ends of length direction.Described tapered bristles plants the head in the toothbrush handle be made up of acrylic resin.The bristle footpath a of tapered bristles body is 100 μm, and the length of the tapered portion of the tip side of tapered bristles body is 2mm.

In addition, the imaginary diameter of a circle outermost sidepiece of 4 tapered bristles bodies and the center of tapered bristles coupled together and the bristle footpath b of tapered bristles 5 are 200 μm.The width of the inner edge portion of tapered bristles body is 80 μm, and be 80 μm from the width W 1 of the outer edge that coating is given prominence to, projecting height H1 is 30 μm.

In addition, the structure covered about 50% side of tapered bristles body with coating body is made.

Be two by 20 tapered bristles body one foldings be 40 to make the bristle number of each pieces, and carry out the toothbrush of the embodiment 1 of planting hair to manufacture test with the state lenticular wires of 4 row × 7 row.

< embodiment 2>

Use the tapered bristles of structure like this: the tapered bristles being shape shown in Fig. 3 A ~ B, specifically, four tapered bristles bodies of to be the cross section be made up of PBT resin be rectangle, in the central shaft side engagement of tapered bristles, and with the structure that a part of aspect of these 4 tapered bristles bodies covers by the coating be made up of PET resin, and respectively there is tapered portion at the both ends of length direction.Described tapered bristles, plants the head in being made up of acrylic resin.The bristle footpath a of tapered bristles body is 90 μm, and the length of the tapered portion of the tip side of tapered bristles body is 3mm.

In addition, the imaginary diameter of a circle outermost sidepiece of 4 tapered bristles bodies and the center of tapered bristles coupled together and the bristle footpath b of tapered bristles 5 are 190 μm.The width of the inner edge portion of tapered bristles body is 60 μm, and be 80 μm from the width W 2 of the outer edge that coating is given prominence to, projecting height H2 is 10 μm.In addition, the structure covered about 50% side of tapered bristles body with coating portion is made.

Be two by 20 tapered bristles body one foldings be 40 to make the bristle number of each pieces, and carry out the toothbrush of the embodiment 2 of planting hair to manufacture test with the state lenticular wires of 4 row × 7 row.

< embodiment 3 ~ 6>

As the tapered bristles of embodiment 3,4,5,6, use the tapered bristles of structure shown in table 1 below, and form toothbrush.For the explanation of the tapered bristles of embodiment 3 ~ 6, in order to contrast, the shape of the tapered bristles of embodiment 1,2, the resin classification (resin 1) of tapered bristles body, the resin classification (resin 2) be coated to, bristle footpath a (μm), bristle footpath b (μm), taper length (mm), inner edge portion width W (μm), outer edge width W (μm), projecting height H (μm), covering rate (%), bristle number (root), arrangement (row) are also documented in table 1 below in the lump.

[table 1]

< comparative example 1>

As the tapered bristles of comparative example 1, make the tapered bristles of the 3 taper branched hairs that there is columned body and be formed in its top, the diameter of described columned body is identical with an imaginary diameter of a circle, and this imaginary circle is the imaginary circle that the outermost sidepiece of tapered bristles body of ovum type and the center of tapered bristles couple together by previous cross section.This tapered bristles as described in Patent Document 1, manufacture by the following method: the filament tow by the cross section of one one being the clover type of three leaves is pricked many and makes pieces, after this pieces is cut into specific length (about 25 ~ 35mm), its top ends is immersed in the hydrolyzable medicaments such as sodium hydrate aqueous solution.

< comparative example 2>

As the tapered bristles of comparative example 2, the bristle fiber described in patent document 2 is used to make toothbrush.Carry out spinning to bristle fiber, this bristle fiber is the structure being compounded with the compound resin be made up of 3 sandwich layers of the polyester of diameter 60 μm in the inside on the top layer of Fig. 5 of patent document 2, the external diameter 190 μm of nylon as shown in Figure 6.Respectively high-quality green tea grinding is carried out to the two ends of this bristle fiber and length that tapered portion is processed in taper is 3mm, as patent document 2 as shown in Figure 1, obtain the bristle that top ends has 6 tapered bristles portions.Use this bristle of radical identical with preceding embodiment, carry out planting hair, form the toothbrush of comparative example 2.

< comparative example 3>

Although be the structure be equal to embodiment 1, make from the width W 2 of the outer edge that coating is given prominence to be 10 μm, projecting height H2 is the tapered bristles of the shape of 1 μm, and planted the toothbrush obtaining comparative example 3 in head.

< comparative example 4>

Although be the structure be equal to embodiment 1, make from the width W 2 of the outer edge that coating is given prominence to be 130 μm, projecting height H2 is the tapered bristles of the shape of 80 μm, and planted the toothbrush obtaining comparative example 4 in head.

Each toothbrush for the above-described, concentrates the state of splitting as the hair of planting mao appropriateness, facing cleaning true feeling, gap cleaning true feeling, outward appearance identity, contact sense and overall merit in the table 2 below being documented in.

Table 2

Assessment item shown in table 2 and metewand as follows.

< plants a mao appropriateness >

Be two by pieces one folding of bristle, lenticular wire sandwiched this part of turning back, insert and be formed at planting in pore and hair being planted to pieces of head.Measure the generation rate of splitting of bristle now, by benchmark evaluation productivity below.

A: do not produce split (generation rate of splitting is less than 10ppm)

B: almost do not produce and split (more than the generation rate 10ppm that splits, be less than 50ppm)

C: produce split (more than the generation rate 50ppm that splits, be less than 100ppm) a little

D: produce and split (split more than generation rate 100ppm)

< facing cleaning true feeling >

10 commentators clean in oral cavity with the toothbrush of each example, evaluate by the cleaning effect of metewand the following to facing now.The average mark more than 4.0 points of 10 commentators is set to " A ", by average mark more than 3.0 points, is less than 4.0 and is divided into " B ", by average mark more than 2.0 points, be less than 3.0 and be divided into " C ", average mark is less than 2.0 and is divided into " D ".

" metewand "

5 points: strongly feel the thoughts and feelings that facing dirt drops.

4 points: feel the thoughts and feelings that facing dirt drops strongly.

3 points: feel the thoughts and feelings that facing dirt drops.

2 points: not too feel the thoughts and feelings that facing dirt drops.

1 point: do not feel the thoughts and feelings that facing dirt drops.

< gap cleaning true feeling >

10 commentators clean in oral cavity with the toothbrush of each example, evaluate gap cleaning effect now with metewand the following.The average mark more than 4.0 points of 10 commentators is set to " A ", by average mark more than 3.0 points, is less than 4.0 and is divided into " B ", by average mark more than 2.0 points, be less than 3.0 and be divided into " C ", average mark is less than 2.0 and is divided into " D ".

" metewand "

5 points: strongly feel the thoughts and feelings that gap dirt drops.

4 points: feel the thoughts and feelings that gap dirt drops strongly.

3 points: feel the thoughts and feelings that gap dirt drops.

2 points: not too feel the thoughts and feelings that gap dirt drops.

1 point: do not feel the thoughts and feelings that gap dirt drops.

< outward appearance identity >

10 commentators detect by an unaided eye the toothbrush of each example, evaluate by the identity of metewand the following to hair tip shape now.The average mark more than 4.0 of 10 commentators is set to " A ", by average mark more than 3.0 points, is less than 4.0 and is divided into " B ", by average mark more than 2.0 points, be less than 3.0 and be divided into " C ", average mark is less than 2.0 and is divided into " D ".

" metewand "

5 points: the shape strongly feeling high-quality green tea branch.

4 points: the shape feeling high-quality green tea branch strongly.

3 points: the shape feeling high-quality green tea branch.

2 points: the shape not too feeling high-quality green tea branch.

1 point: the shape not feeling high-quality green tea branch.

< contact sense >

10 commentators clean in oral cavity with the toothbrush of each example, with metewand the following to evaluating the contact sense of gum now.The average mark more than 4.0 points of 10 commentators is set to " A ", by average mark more than 3.0 points, is less than 4.0 and is divided into " B ", by average mark more than 2.0 points, be less than 3.0 and be divided into " C ", average mark is less than 2.0 and is divided into " D ".

" metewand "

5 points: without gum pain, contact sense is very good.

4 points: without gum pain, contact sense very well.

3 points: without gum pain, contact is felt.

2 points: gum feels pain a little.

1 point: gum feels severe pain.

< overall merit >

The overall merit judged by above-mentioned each evaluation is as follows.

A:A is more than two, and other is B

B:A is less than one, and other is B

C: without D, has a C

D: have a D

As can be seen from the result shown in table 2, the tip side for columned body has the tapered bristles of the structure of multiple tapered portion, as long as the structure of the present application, then plant a mao adaptability excellence, facing sweeping forces is excellent, gap cleaning power is also excellent.

This is owing to making the outer edge of tapered bristles body be projected into outside coating portion, the cause that facing sweeping forces and gap cleaning power just improve.In addition, we think, the scope being 20 ~ 120 μm from the outstanding width W of the outer edge that coating is given prominence to is suitable, and projecting height H is the scope of 10 ~ 70 μm is suitable.

In addition, we think, from the outstanding width W of the outer edge that coating is given prominence to, preferably bristle footpath b 10% ~ 30% scope, the projecting height H1 being projected into the outer edge 6b of foreign side from described coating portion 7 preferably bristle footpath b 5% ~ 40% scope.

Practicality in industry

Adopt the present invention, due to a kind of tapered bristles, its manufacture method can be provided and there is the toothbrush of described tapered bristles, as taper hair, gum is soft contact sense and to enter the entering of oral pocket excellent, true feeling excellence swept by brush, and bristle is difficult to split when to plant mao or when using, and therefore, is industrially exceedingly useful.

Claims

1. a tapered bristles, is characterized in that, comprising:

2. tapered bristles as claimed in claim 1, it is characterized in that, described tapered bristles body and described coating portion are made up of different resins,

3. tapered bristles as claimed in claim 1 or 2, is characterized in that described tapered bristles body collection portion is touched integration by the side of described each tapered bristles body each other at the central side of the cross section of this tapered bristles body collection portion and forms,

4. tapered bristles as claimed in claim 1 or 2, is characterized in that, described coating portion is the coating portion of the bristle-like covered by each tapered bristles body of described adjacent configuration,

5. the tapered bristles according to any one of Claims 1 to 4, it is characterized in that, the outstanding width being projected into the outer edge of the described tapered bristles body in outside from described coating portion is 5 ~ 50% of the diameter of described tapered bristles body, and projecting height is 10 ~ 80% of the diameter of described tapered bristles body.

6. the tapered bristles according to any one of Claims 1 to 5, it is characterized in that, part in described tapered bristles body collection portion except tapered portion is formed as, cross section be polygon-shaped or cross section be more than 3 of oval shape, the tapered bristles body of less than 10 gathers centered by the central shaft of described tapered bristles.

7. a toothbrush, is characterized in that, head plants just like the tapered bristles according to any one of claim 1 ~ 6.

8. a manufacture method for tapered bristles, be the method manufacturing tapered bristles, it is characterized in that, described tapered bristles comprises:

Described manufacture method comprises: