CN104661563B

CN104661563B - Tapered bristles, its manufacture method and there is the toothbrush of tapered bristles

Info

Publication number: CN104661563B
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: 2016-08-24
Anticipated expiration: 2033-09-25
Also published as: JPWO2014050863A1; MY194080A; JP6101702B2; CN104661563A; WO2014050863A1; KR102183281B1; KR20150060661A

Abstract

A kind of tapered bristles, including: tapered bristles body collection portion, it is to be adjacent to by the resinous tapered bristles body of more than 3, less than 10, and the top of each described tapered bristles body has tapered portion；And resinous coating portion, it is by all or part of covering of the side of tapered bristles body, it is integrated so that the side by this tapered bristles body is engaged with each other, this side is engaged with each other by this coating portion by all or part of covering of the side in addition to tapered portion of this tapered bristles body, and the outer edge in the part in addition to tapered portion of each tapered bristles body is projected into the outside in described coating portion.

Description

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

Technical field

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

The application claimed priority in the Patent 2012-211159 of Japanese publication based on September 25th, 2012, And by its content quotation at this.

Background technology

In order to prevent periodontosis, as connecing soft-touch and can reliably the inboard of oral pocket be carried out clearly with high-quality green tea Sweep the bristle for advantage, taper hair (super fine, soft fur) that top be sharpened is widely used.It is sharpened taper hair as top An example, it is known to the monofilament of a kind of conical by its shape, this monofilament is the top ends for plastic monofilament, will Leave the bristle footpath at each position of tapered tip 1mm, 3mm, 5mm, 8mm specifically for the external diameter of bristle base portion 25～35%, 55～70%, 80～90%, 90～100%, and known have a kind of this monofilament is planted on toothbrush handle top The toothbrush of the structure of end.

But, the taper hair that this top is sharpened, owing to being superfine hair, therefore there is the contact to gum to die down, lack The problem of weary cleaning true feeling.

Therefore, for the purpose of the cleaning true feeling improving the taper hair that top is sharpened further, have studied tips branch hair. Its representative construction be the bristle to multiple leaf-shaped section shape carry out branch the structure (with reference to patent document 1) planted, And the top of the bristle of island shape structural regime is carried out the structure (with reference to patent document 2) of branch.

The taper hair that top described in patent document 1 is sharpened, is such a kind of structure: cross section is by employing The top ends of the bristle of clover type be branched off into multiple, each top ends of branched hair is made the cone shape that top is sharpened The structure of shape, does portion's entering between its tooth of high-quality green tea of branched hair into a cone shape excellent, and by the hair by 1 bristle Hardness is made suitable value and can be suppressed the pain producing tooth meat.

The taper hair that top described in patent document 2 is sharpened, is such a kind of structure: use by composite fibre Constituting the bristle of toothbrush and be ground high-quality green tea and be divided into multiple structures, described composite fibre is by not gluing mutually The top layer of the resin connect and sandwich layer are constituted, it is possible to be easily accessible 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, between its tooth, cleaning property is excellent, to gum be soft contact sense and It is the highest that true feeling swept by brush, but when planting mao or the time of use, there is the bristle that cross section is clover type splintery Shortcoming.

It addition, the previous toothbrush described in patent document 2, owing to branched hair is intensive in bristle tips side circumferential position Inner side, accordingly, there exist and branched hair is set and the shortcoming sweeping true feeling is sufficiently brushed in can not obtaining of producing.

Summary of the invention

Invent problem to be solved

In order to solve the problems referred to above, the present inventor provide a kind of tapered bristles, its manufacture method and tool There is the toothbrush of described tapered bristles, as taper hair, be that softness contacts sense and enters the entering of oral pocket to gum Excellence, it is excellent that true feeling swept by brush, and when planting mao or the time of use bristle is difficult to split.

For solving the means of problem

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

The feature of the tapered bristles of the present invention is, including: tapered bristles body collection portion, this tapered bristles body collection portion is The resinous tapered bristles body of more than 3, less than 10 is adjacent to, each described tapered bristles body Top all there is tapered portion；And resinous coating portion, this coating portion is complete by the side of described tapered bristles body Portion or a part cover, and integrated so that the side by described tapered bristles body is engaged with each other, described coating portion is by described The side in addition to tapered portion of tapered bristles body is engaged with each other, and highlights with the side external end edge of each described tapered bristles body State to described coating outside is attached to the side of described tapered bristles body.

In the tapered bristles of the present invention, it is possible to use and there is the structure of following features: described tapered bristles body and described Coating portion is made up of different resins, and the tapered portion of described tapered bristles is the taper formed by impregnated in lysate Portion, constitutes the resin-phase solubility for described lysate in described coating portion, than the tree constituting described tapered bristles body Fat is big relative to the solubility of described lysate.

In the tapered bristles of the present invention, such structure can be made: described tapered bristles body collection portion, by each institute State the side of tapered bristles body to touch integration each other at the central side of this tapered bristles body collection portion and constitute, described quilt Portion of covering is attached to tapered brush with the state of the side touching integral part of the tapered bristles body covering described more than 3 The side of hair body.

In the tapered bristles of the present invention, it is possible to make such structure: described tapered bristles body collection portion has institute Stating the coating portion of the bristle-like of the tapered bristles body covering of more than 3 be adjacent to, described tapered bristles body is set as, Its side external end edge is prominent from the side in described coating portion, and remaining part is embedded in the coating portion of described bristle-like.

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

In the tapered bristles of the present invention, the part in addition to tapered portion of described tapered bristles body collection portion, it is possible to formed By the tapered bristles body of be polygon-shaped or cross section substantially oval shape by cross section more than 3 formed transversal Face is the most petal-shaped.

The 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 the tapered bristles of the present invention, is the method manufacturing tapered bristles, and described tapered bristles includes: cone Shape body brush collection portion, this tapered bristles body collection portion is to be adjacent to by the resinous tapered bristles body of more than 3 , the top of each described tapered bristles body is made into tapered portion；And resinous coating portion, this is coated to Portion the adjacent side surface part of described tapered bristles body constituting described tapered bristles body collection portion is integrated with each other and incite somebody to action The adjacent side surface part of described tapered bristles be coated to, described coating portion cover at described tapered bristles body in addition to tapered portion Side, the outer edge of the side in addition to tapered portion of each described tapered bristles body is projected into outside described coating portion Side, the feature of this manufacture method is,

With resinous coating parts, the bristle being adjacent to more than 3 raw-material raw material bristle portion is being covered And form bristle when being coated to body, as constituting the raw-material resin of described bristle and constituting the resin of described coating parts, All use, relative to lysate, there is deliquescent resin, and use such resin: constitute the tree of described coating parts Fat relative to the solubility of described lysate than constituting molten for described lysate of the raw-material resin-phase of described bristle Solution degree is big, is being attached on described bristle raw material to be formed after bristle is coated to body by described coating parts, by described brush Fleece covers after body impregnated in described lysate mentions again, thus in each described bristle raw-material top formation tapered portion Form tapered bristles body, and the coating parts around described tapered portion are dissolved removal and forms coating portion, this coating portion Cover the side at the described tapered bristles body in addition to described tapered portion.

That is, the present invention is as follows.

[1] a kind of tapered bristles, described tapered bristles is made up of tapered bristles body collection portion and resinous coating portion,

Described tapered bristles body collection portion is to be adjacent to by the resinous tapered bristles body of more than 3, less than 10 , the top of each described tapered bristles body has tapered portion,

Described coating portion a part for the side in addition to tapered portion of described tapered bristles body is covered from top to bottom and Being engaged with each other described side and integrated, described coating portion self does not constitute tapered bristles body,

Outer edge in the part in addition to tapered portion of each described tapered bristles body is projected into described quilt in the horizontal direction Cover the outside in 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,

Constitute the resin-phase solubility for described lysate in described coating portion, than the tree constituting described tapered bristles body Fat is big relative to the solubility of described lysate.

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

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

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

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

In the part in addition to tapered portion of described tapered bristles body, except as noted the remaining part outside edge be embedded in institute State the coating portion of bristle-like.

[5] tapered bristles as described in [1] or [2], from described coating portion is projected into the described tapered bristles body in outside The prominent width of edge is the 5～50% of the diameter of described tapered bristles body, and projecting height is the straight of described tapered bristles body The 10～80% of footpath.

[6] tapered bristles as described in [1] or [2], in described tapered bristles body collection portion, the part in addition to tapered portion is formed For, cross section is polygon-shaped or cross section is oval shape more than 3, the tapered bristles body of less than 10 is with described Gather centered by the central shaft of tapered bristles.

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

[8] manufacture method of a kind of tapered bristles, is the method manufacturing tapered bristles, and described tapered bristles is by tapered bristles Body collection portion and resinous coating portion are constituted,

Outer edge in the part in addition to tapered portion of each described tapered bristles body is projected into described quilt in the horizontal direction Cover the outside in portion,

Described manufacture method includes:

By more than 3, the raw-material former material of bristle of less than 10 will be adjacent to resinous coating parts Material bristle portion covers, thus forms bristle and be coated to the operation of body；

Mention again after impregnated in lysate by the tip side that described bristle is coated to body, thus at each former material of described bristle The top of material forms the operation of tapered portion；And

Being dissolved by coating parts around described tapered portion and remove, form the operation in coating portion, this coating portion will have institute The raw-material side surface part in addition to tapered portion of bristle stating tapered portion covers,

Constitute the raw-material resin of described bristle and constitute the resin of described coating parts, being relative to described lysate There is deliquescent resin,

Constituting the resin-phase solubility for described lysate of described coating parts, than constituting, described bristle is raw-material Resin-phase is big for the solubility of described lysate.

The effect of invention

Use the present invention, owing to the top of each tapered bristles body has tapered portion, therefore, enter the entering of oral pocket Excellence, and due to coating portion by the tapered bristles of more than 3 integration, therefore, with the tapered bristles of one one The structure of body independence is compared, and can improve a mao hardness, can improve brush and sweep true feeling.Further, since except tapered portion other places is constituted Coating portion, therefore, can be maintained at the part that the tip side i.e. tapered portion in coating portion is impaled by toothpaste, and having can be by tooth The active ingredient of cream securely feeds the inboard effect of oral pocket.

It addition, in the case of when manufacturing toothbrush, head is planted hair by the feather planting machine of flat wire type, owing to being with coating The structure that the tapered bristles body of more than 3 is concentrated by portion, therefore, when planting mao or the time of use is difficult to produce high-quality green tea and easily splits The problem opened.

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 the bristle quilt before the dissolution process in the method representing the tapered bristles manufacturing an embodiment of the present invention Cover the stereogram of body.

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

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 a further embodiment of this invention.

Fig. 4 B is the stereogram of the tapered bristles of a further embodiment of this invention.

Fig. 5 A is the top view of the tapered bristles of a further embodiment of this invention.

Fig. 5 B is the stereogram of the tapered bristles of a further embodiment of this invention.

Fig. 6 A is the top view of the tapered bristles of a further embodiment of this invention.

Fig. 6 B is the stereogram of the tapered bristles of a further embodiment of this invention.

Fig. 7 A is the top view of the tapered bristles of a further embodiment of this invention.

Fig. 7 B is the stereogram of the tapered bristles of a further embodiment of this 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 ... base Body, 16b, 26b, 36b, 46b, 56b ... outer edge, 17,27,37,47,57 ... coating portion.

Detailed description of the invention

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

Figure 1A is the diagram of the toothbrush A representing that the implanting of the 1st embodiment has tapered bristles.This toothbrush A has and plants Being provided with the head 2 of multiple pieces 1, neck 3 and handle part 4, described head 2, neck 3 and handle part 4 are by hard Resin material is constituted.

Constitute head 2, neck 3 and the hard resin of handle part 4, acrylic resin or polyester resin can be used, but May be alternatively configured the double-colored drip molding being covered around of these hard resins with soft resin.

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

It is used as being applicable to any resin of general toothbrush used herein of resin.

Plant the pieces 1 of head 2 in toothbrush A, be with such as relative to planting hair by tapered bristles 5 described below The pack completeness of the area in hole is 70～the state of 95% and many of banding, and use lenticular wire that diagram omits and by tapered brush The bundle of hair 5 is deformed into V shape and planting of hammering into that the diagram of head 2 omits plants in pore.It addition, by taper The Shu Zhishe of bristle 5 method on head 2 is not limited to the above-mentioned hair of planting using lenticular wire and constructs, it is possible to use any A kind of method carrying out planting hair in general toothbrush.

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

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

Tip side at tapered bristles body 6 is formed with top and narrows tapered portion 6A of shape.Tapered bristles body 6 removes Part outside this tapered portion 6A is matrix part 6B.The axial random cross-sectional shape of matrix part 6B is identical.

It addition, what is called " shape of cross section is identical " here, as long as substantially the same, such as, at cross section Area in also still allow for more than 0%, less than 15% difference.

Matrix part 6B in the tapered bristles body 6 of present embodiment is ovum type for example formed as cross section, i.e. at matrix In the cross section of portion 6B, it is positioned at the width of inner edge portion 6a of the central part side of tapered bristles 5 and is positioned at tapered bristles 5 The width of outer edge 6b of outer circumferential side, the width being formed than the pars intermedia 6c between them is little.

It addition, the what is called " ovum type " in present specification and claims, comprise circle, egg type, Long Circle With ellipse etc., preferably at least there is a symmetry axis.

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

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

So-called " width of pars intermedia 6c ", refers to the coating portion 7 identical with the center of tapered bristles 5, the center that draws The imaginary circle that periphery is constituted, draws the midpoint of this imaginary circle and the intersection point of the outer rim of matrix part 6B and tapered bristles The boost line that the center of 5 couples together, the pars intermedia 6c between inner edge portion 6a and outer edge 6b draws relative to this During the orthogonal arbitrary line of boost line, the distance that will couple together between the intersection point of this straight line and the outer rim of matrix part 6B Maximum.

In the present embodiment, as shown in Figure 1 C, the tapered bristles body 6 of tapered bristles 5 is by 4 matrix part 6B Gather centered by the central shaft of tapered bristles 5, and make they integrations constitute tapered bristles body collection portion 9, use The side surface part of coating portion 7 this tapered bristles body collection portion 9 of local complexity, thus form tapered bristles 5.It addition, figure 1C only depicts the shape of the end side of tapered bristles 5, another side of tapered bristles 5 also form tapered portion 6A and Become the shape identical with Fig. 1 C.Therefore, the both end sides at the length direction of tapered bristles 5 is formed with tapered portion 6A, And as it has been described above, make tapered bristles 5 be deformed into V-shape and utilize lenticular wire to be planted in head 2, constitute pieces 1, Thus may make up the toothbrush A with multiple pieces 1 of structure shown in Figure 1A.

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

It addition, the length of tapered portion 6A of the tip side of tapered bristles body 6 (that is, the maximum of the length direction of tapered portion Distance), preferably about 0.5mm～5.0mm.It addition, here, so-called " " center " of tapered bristles, refers to In the cross section of the matrix part of tapered bristles, interior bag described taper external with the outer rim of at least one tapered bristles body Whole cross sections of the matrix part of bristle and the center of this imaginary circle when drawing imaginary circle with becoming least radius.

It addition, when the imaginary circle 8 that the outermost sidepiece of tapered bristles body 6 and the center of tapered bristles 5 are coupled together Diameter when being set to bristle footpath b (that is, the b=2a) of tapered bristles 5, bristle footpath b preferably 100 μm～300 μm are left Right scope, the scope about preferably 150 μm～250 μm.

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

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

In 4 the matrix part 6B constituting 4 tapered bristles bodies 6, it is formed with coating portion 7, to cover adjacent 2 Inner edge portion 6a of individual matrix part 6B is partly to the outside (i.e. side) of pars intermedia 6c part.That is, 2 adjacent matrixes Inner edge portion 6a of portion 6B, to the part of pars intermedia 6c, is equivalent to the adjacent side surface part between matrix part 6B, is formed There is the coating portion 7 covering this side surface part.It addition, the outer peripheral face in this coating portion 7 makes flexure plane, with constitute center with A part for the periphery that the center of described tapered bristles 5 is identical, in the present embodiment, preferably such as Figure 1B institute Show that the outer peripheral face in 4 coating portions 7 is configured to constitute same periphery like that.

In tapered bristles body 6, the part being projected into outside from described coating portion 7 is outer edge 6b, this outer edge The prominent width W1 of 6b is formed as about 10～100 μm, is projected into the outer edge 6b of foreign side from described coating portion 7 Projecting height H1 be formed as about 10～80 μm.

It addition, the what is called " prominent width " in this specification and claims book, refer to when drawing center and taper Imaginary circle that the periphery in the coating portion that the center of bristle is identical is constituted and the intersection point of the outer rim of matrix part couple together During boost line, by the part being positioned at outside relative to this boost line of matrix part, (that is, matrix part is auxiliary relative to this Index contour and be positioned at the part of the central side opposition side with tapered bristles) outer rim and parallel relative to this boost line appoint The maximum of the distance that the intersection point of meaning straight line couples together.

What is called " projecting height " in this specification and claims book, refers in the cross section of tapered bristles, draws Go out the imaginary circle that the periphery in the coating portion identical with the center of tapered bristles, center is constituted, draw this imaginary circle and base During the boost line that the midpoint of the intersection point of the outer rim of body and the center of tapered bristles couple together, from by this boost line and base The distance that the intersection point of the outer rim of body and the center of tapered bristles couple together, deduct from the center of tapered bristles to by Length after the distance of the periphery of the imaginary circle that the periphery in described coating portion is constituted.

Further, since the bristle footpath a of tapered bristles body 6 is about 50～150 μm, therefore, prominent width W1 is It is well 5～50% scope of the bristle footpath a of tapered bristles body 6.

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

Constitute described tapered bristles body 6 and the resin in coating portion 7, from the perspective of processability, preferably use polyesters tree Fat.If any: PET (polyethylene terephthalate), PTT (PTT), PBT (gather benzene Dioctyl phthalate butanediol ester), the polyester such as PBN (PBN)；The polyamide such as 612 nylon, 610 nylon；Poly- The resins such as the polyolefin of ethene (PE), polypropylene (PP) etc., wherein, are preferably polyester from the perspective of handling ease.This A little resins can be combined two kinds and use, but from manufacturing the cost of investment of equipment, maintenance and presentation quality stability From the viewpoint of, the monofilament being preferably all made up of single material.As constituting described tapered bristles body 6 and coating portion 7 Resin, be each not limited to monofilament, it is possible to be made up of the multifilament making multi-ply construction.

It addition, formed in the case of tapered portion 6A on these tapered bristles bodies 6, it is possible to impregnated in after lysate again Mention and carry out taper processing, as the lysate in the case of this, owing to using NaOH, hydrolyzable solution, Therefore, the resin of the different solubility for these lysates it is preferably selected.

In the present embodiment, as the example of combination, in the case of forming tapered bristles body 6 with (PBT), Available (PET) forms coating 7.It addition, the example combined as another, forming tapered brush with (PBN) In the case of hair body 6, available (PBT) forms coating 7.

If having 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, 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, the sweeping property of brush of oral pocket Excellence, cleans true feeling excellent.Additionally, in the present embodiment, owing to 4 tapered bristles bodies 6 are concentrated and used quilt Cover portion 7 to cover and integrated, accordingly, as having concentrated the tapered bristles 5 of 4 tapered bristles bodies 6, compared to tool There is the structure of the tapered bristles body that the tapered bristles body 6 of one one is planted independently hair, a mao hardness can be improved, between tooth True feeling excellence is swept with the brush of tooth bud.

In the case of using the toothbrush A with the tapered bristles 5 shown in Figure 1A～C, toothpaste can be maintained at 4 Space between root tapered portion 6A, the part of the top front space in i.e. 4 coating portions 7.Therefore, in this enforcement In mode, have the effect that the tip side that toothpaste can be maintained at tapered bristles 5, and having toothpaste Effect composition securely feeds the deepest part of oral pocket.

It addition, in the case of the tapered bristles 5 shown in Figure 1B～C, Fig. 2 A～B is planted hair, due to quilt Cover portion 7 a part of side of 4 tapered bristles bodies 6 to be covered and retrain, therefore, when with lenticular wire by tapered brush When tapered bristles body 6 is planted mao by hair body 6 bending, have and 4 tapered bristles bodies 6 can be suppressed each to split ground Carry out planting the effect of hair.

It addition, when using toothbrush A, the surrounding of tapered bristles body 6 is retrained also with coating portion 7 by making The structure covered, thus the phenomenon that tapered bristles 5 may be split when brushing teeth can be suppressed.

As an example, the tapered bristles 5 of structure shown in Figure 1B, C may utilize method as described below and manufactures.

First, in order to constitute tapered bristles body 6, and use (PBT) resin and (PET) resin to carry out two to abnormity Kind of material carries out spinning, and thus the publish picture bristle of the shape of cross section shown in 2A of spinning is coated to body 10.From this spinning body Obtain the bristle as the Len req of the cut length that Cutting Length is 25～about 35mm and be coated to body 10.In this enforcement In mode, this bristle is coated to body 10 and includes: raw material bristle portion 12, and this raw material bristle portion 12 is to make by (PBT) Cross section is ovum type 4 bristle raw material 11 that resin is constituted collect centered by the central shaft being coated to body 10 by bristle Close state under adjacent and integrally formed；And 4 the coating parts 13 being made up of (PET) resin, should Coating parts 13 are integrally formed at raw material bristle with the state by the side local complexity in this raw material bristle portion 12 The side in portion 12.

Then, form tapered portion to be coated to the top ends of body 10 at bristle, prepare the lysates such as acid, alkaline solution, The one end that bristle is coated to body 10 is immersed in lysate with required time, proceeds through and mentions, neutralizes, washes The lysate of process etc. processes.

The example processed as lysate, as the resin in composition raw material bristle portion 12, is using polyester resin In the case of, the one end that bristle can be coated to body 10 is immersed in the dissolving that liquid temperature is 120～140 DEG C as lysate After in Ceng, carrying out the process mentioned, described liquid temperature is that the dissolving layer of 120～140 DEG C employs and adds thermokalite or heating Acid, preferably 40～the NaOH aqueous solution of 50%.

Lysate can determine according to resin used, such as, in addition to sodium hydroxide solution, can enumerate such as hydroxide The acid solution such as alkaline solution, sulfuric acid bath and the organic solvents etc. such as potassium solution.

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 are lower than above-mentioned condition, then the efficiency of heating surface declines, when lysate When solution concentration or heating-up temperature are more too high than above-mentioned condition, then it is difficult to control to the machining shape that top is sharpened.

Such as, when by aforesaid NaOH solution, the bristle of structure shown in Fig. 2 A is coated to body 10 carrying out at lysate During reason, owing to the dissolubility of coating parts 13 being made up of (PET) resin is than the bristle being made up of (PBT) resin The dissolubility of raw material 11 is high, therefore, while the top of bristle raw material 11 can form tapered portion 6A, and can The coating parts 13 that will be present between tapered portion 6A dissolve and remove, and thus can obtain the taper of shape shown in Fig. 2 B Bristle 5.

As described above, it is immersed in lysate by bristle being coated to the one end of body 10, thus can be simultaneously Processing tapered portion 6A and coating portion 7, and the tapered bristles 5 of shape shown in Fig. 2 B can be obtained.This is because composition quilt Cover the resin-phase in portion 7 dissolubility for lysate than the resin-phase dissolubility for lysate constituting tapered portion 6A High reason, by selecting the material of the material in the coating portion 7 of material and composition constituting tapered bristles body 6 and dissolve Liquid is combined, and has the effect that can to easily and reliably manufacture the structure shown in Fig. 2 B.

Fig. 3 A～B is the diagram of the tapered bristles 15 representing second embodiment of the present invention, and Fig. 3 A is tapered bristles The top view of the tip portion of 15, 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, with the cone of the 1st previous embodiment Shape bristle 5 plants in the same manner on the head of hard resin, in order to constitute toothbrush.

Resinous 4 tapered bristles bodies 16, as shown in Fig. 3 B amplifies, are existed by the tapered bristles 15 of present embodiment The central side of the cross section of tapered bristles 15 is integrated and constitutes tapered bristles body collection portion 19, the part of this integration All or part of of side covered by resinous coating portion 17 respectively.Tip side shape at tapered bristles body 16 Become to have top to narrow tapered portion 16A of shape.In tapered bristles body 16, the part in addition to this tapered portion 16A is base Body 16B.The axial random cross-sectional shape of matrix part 16B is identical.It addition, what is called " cross section shape here Shape is identical ", if substantially the same, such as, also still allow in the area of cross section more than 0%, 15% with Under difference.

Matrix part 16B in the tapered bristles body 16 of present embodiment, for example formed as transverse polygonal shape, i.e. In the cross section of matrix part 16B, the width of pars intermedia 16c of tapered bristles 15, the width shape of outer edge 16b Become and become larger successively than the width of inner edge portion 16a being positioned at central part side in the order.

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

It addition, here what is called " width of inner edge portion 16a ", " width of outer edge 16b " and " pars intermedia 16c Width ", be and aforementioned " width of inner edge portion 6a ", " width of outer edge 6b " and " width of pars intermedia 6c " The identical meaning.

In the present embodiment, as it is shown on figure 3, the tapered bristles body 16 of tapered bristles 15 is by 4 matrix part 16B Set centered by the central shaft of tapered bristles 15 and integrated, and by their side with being coated to portion 17 local complexity And form tapered bristles 15.The prominent width being projected into the outer edge 16b outside coating portion 17 is W2, and prominent Highly it is set to H2.

It addition, although Fig. 3 B only draws the end side of tapered bristles 15, but another side also shape of tapered bristles 15 Tapered portion 16A also becomes the shape identical with Fig. 3 B.Therefore, at the two ends of length direction of tapered bristles 15 Side is formed with tapered portion 16A, makes the bundle of tapered bristles 15 be deformed into V-shape and utilize lenticular wire to be planted in toothbrush Head, thus constitute toothbrush.

In this case, 4 tapered bristles bodies 16 collect centered by the central shaft of tapered bristles 15 Close, when the bristle footpath a of tapered bristles body 16 is defined as, from the center of the shape engaged a to matrix The distance of the outer edge 16b top ends of portion 16B is (that is, when, in the cross section in tapered bristles 5, drawing center and cone The imaginary circle that the periphery in the coating portion 17 that the center of shape bristle 15 is identical is constituted, draws this imaginary circle and matrix part During the boost line that the midpoint of the intersection point of the outer rim of 16B and the center of tapered bristles 15 couple together, refer to this boost line And the intersection point between the outer rim of matrix part 16B is to the distance at the center of tapered bristles 15) time, this bristle footpath a can be About 50 μm～150 μm, preferably bristle footpath a selects the scope about 70 μm～130 μm.It addition, tapered brush The length (that is, the ultimate range of the length direction of tapered portion) of tapered portion 16A of the tip side of hair body 16, preferably About 0.5mm～5.0mm.

It addition, when the vacation that the outermost sidepiece of 4 tapered bristles bodies 16 and the center of tapered bristles 15 are coupled together Think that when the diameter of circle 18 is set to the bristle footpath b of tapered bristles 15, bristle footpath b preferably 100 μm～300 μm are left Right scope, the scope about preferably 150～250 μm.

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

It is 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, the most easily tapered portion 16A is inserted oral pocket.Therefore, the entrance tooth of tapered bristles 15 Week, the entering of bag was excellent, and the sweeping property of brush in oral pocket is excellent, cleans true feeling excellent.Additionally, in the present embodiment, It is owing to 4 tapered bristles body 16 integrations are constituted tapered bristles 15, therefore, identical with the 1st embodiment, Also the effect that mao hardness is high can be obtained.It addition, in the present embodiment, toothpaste can be maintained at 4 tapered portion 16A Between spatial portion, identical with previous tapered bristles 5, it is possible to obtain toothpaste can be supplied to portion in oral pocket Effect and plant hair and use time tapered bristles 15 can be suppressed to split effect.

It addition, for the manufacture method of the tapered bristles 15 shown in Fig. 3 A～B, can use and based on previous Fig. 2 A～B The equal method of the manufacture method that illustrates manufactures.

It addition, the radical of the tapered bristles body 16 for constituting tapered bristles 15, as long as there is the effect of the present invention also Can suitably change, such as, may also be 2～10.

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

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

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

Tip side at tapered bristles body 26 is formed with top and narrows tapered portion 26A of shape.In tapered bristles body 26 Part in addition to this tapered portion 26A, is matrix part 26B.The axial random cross-sectional shape phase of matrix part 26B With.

Matrix part 26B in the tapered bristles body 26 of present embodiment, for example formed as transverse polygonal shape, i.e. In the cross section of matrix part 26B, the width of pars intermedia 26c of tapered bristles 25, the width shape of outer edge 26b Become and become larger successively than the width of inner edge portion 26a being positioned at central part side in the order.It addition, as this enforcement Transverse polygonal shape in mode, cross section is that 3 matrix part 26B of rectangle are configured in tapered bristles 25 The central part side of cross section carries out integration.

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

In the tapered bristles body 26 of present embodiment, as shown in Figure 4 A, the tapered bristles body 26 of tapered bristles 25 3 matrix part 26B are gathered centered by the central shaft of tapered bristles 25 and integrated, and with coating portion 27 by it Side local complexity and form tapered bristles 25.

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

It addition, Fig. 4 A only draws the end side of tapered bristles 25, but another side of tapered bristles 25 also forms cone Shape portion 26A etc. and become the shape identical with Fig. 4 B.Therefore, in the both end sides of length direction of tapered bristles 25 It is formed with tapered portion 26A, and makes the bundle of tapered bristles 25 be deformed into V-shape and utilize lenticular wire to be planted in toothbrush Head, thus constitute toothbrush.

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

In this case, 3 tapered bristles bodies 26 collect centered by the central shaft of tapered bristles 25 Close, when the bristle footpath a of tapered bristles body 26 is defined as, from the center of the shape engaged a to matrix The distance of the outer edge 26b top ends of portion 26B is (that is, when, in the cross section in tapered bristles 25, drawing center and cone The imaginary circle that the periphery in the coating portion 27 that the center of shape bristle 25 is identical is constituted, draws this imaginary circle and matrix part During the boost line that the midpoint of the intersection point of the outer rim of 26B and the center of tapered bristles 25 couple together, refer to this boost line And the intersection point between the outer rim of matrix part 26B is to the distance at the center of tapered bristles 25) time, this bristle footpath a can be About 50 μm～150 μm, preferably bristle footpath a selects the scope about 70 μm～130 μm.It addition, tapered brush The length (that is, the ultimate range of the length direction of tapered portion) of tapered portion 26A of the tip side of hair body 26, preferably About 0.5mm～5.0mm.

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

It is 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, the most easily tapered portion 26A is inserted oral pocket.Therefore, the entrance tooth of tapered bristles 25 Week, the entering of bag was excellent, and the sweeping property of brush in oral pocket is excellent, cleans true feeling excellent.Additionally, in the present embodiment, It is owing to 3 tapered bristles body 26 integrations are constituted tapered bristles 25, therefore, identical with the 1st embodiment, The effect that mao hardness is high can be obtained.It addition, in the present embodiment, toothpaste can be maintained at 3 tapered portion 26A it Between, identical with previous tapered bristles 5, it is possible to obtain toothpaste can be supplied to portion in oral pocket effect and Plant the effect that Mao Shike suppression tapered bristles is split.

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

The tapered bristles 35 of the 4th embodiment shown in Fig. 5 A～B and the tapered bristles of previous embodiment 1～3 Identical, planted the head in hard resin, in order to constitute toothbrush.

The structure of the tapered bristles 35 shown in Fig. 5 A～B, is to replace to be located at the 1st embodiment shown in Figure 1A～C 4 tapered bristles bodies 6 of tapered bristles 5 and be 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, by resinous 3 tapered bristles bodies 36 Tapered bristles 35 cross section central part side integration and constitute tapered bristles body collection portion 39, this integration All or part of of the side of part is covered by resinous coating portion 37 respectively.

Tip side at tapered bristles body 36 is formed with top and narrows tapered portion 36A of shape.In tapered bristles body 36 Part in addition to this tapered portion 36A is matrix part 36B.The axial random cross-sectional shape of matrix part 36B is identical.

Matrix part 36B in the tapered bristles body 36 of present embodiment, is ovum type for example formed as cross section, i.e. exists In the cross section of matrix part 36B, the width of the pars intermedia 36c of tapered bristles 35 formed ratio is positioned at central part side The width of inner edge portion 36a and the width of outer edge 36b are big.

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

In the tapered bristles body 36 of present embodiment, as shown in Figure 5A, the tapered bristles body 36 of tapered bristles 35 3 matrix part 36B are gathered centered by the central shaft of tapered bristles 35 and integrated, and with coating portion 37 by it Side local complexity and form tapered bristles 35.It is projected into the prominent width of outer edge 36b outside coating portion 37 Degree is W1, and projecting height is set to H1.It addition, Fig. 5 B only draws the end side of tapered bristles 35, but taper Another side of bristle 35 also forms tapered portion 36A and becomes the shape identical with Fig. 5 B.Therefore, at tapered brush The both end sides of the length direction of hair 35 is formed with tapered portion 36A, and makes the bundle of tapered bristles 35 be deformed into V-shape also Utilize lenticular wire to be planted the head in toothbrush, thus constitute toothbrush.

In this case, 3 tapered bristles bodies 36 collect centered by the central shaft of tapered bristles 35 Close, when the bristle footpath a of tapered bristles body 36 is defined as, from the center of the shape engaged a to matrix The distance of the outer edge 36b top ends of portion 36B is (that is, when, in the cross section in tapered bristles 35, drawing center and cone The imaginary circle that the periphery in the coating portion 37 that the center of shape bristle 35 is identical is constituted, draws this imaginary circle and matrix part During the boost line that the midpoint of the intersection point of the outer rim of 36B and the center of tapered bristles 35 couple together, refer to this boost line And the intersection point between the outer rim of matrix part 36B is to the distance at the center of tapered bristles 35) time, this bristle footpath a can be About 50 μm～150 μm, preferably bristle footpath a selects the scope about 70 μm～130 μm.It addition, tapered brush The length (that is, the ultimate range of the length direction of tapered portion) of tapered portion 36A of the tip side of hair body 36, preferably About 0.5mm～5.0mm.

It addition, when the vacation that the outermost sidepiece of 3 tapered bristles bodies 36 and the center of tapered bristles 35 are coupled together Think that when the diameter of circle 38 is set to the bristle footpath b of tapered bristles 35, bristle footpath b preferably 100 μm～300 μm are left Right scope, the scope about preferably 150～250 μm.

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

It is 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, the most easily tapered portion 36A is inserted oral pocket.Therefore, in the present embodiment, enter The entering of oral pocket is excellent, and the sweeping property of brush in oral pocket is excellent, cleans true feeling excellent.Additionally, in present embodiment In, owing to 3 tapered bristles body 36 integrations are constituted tapered bristles 35, therefore, with the 1st embodiment phase With, the effect that mao hardness is high can be obtained.It addition, in the present embodiment, toothpaste can be maintained at 3 tapered portion 36A Between, identical with the 1st embodiment, it is possible to obtain and toothpaste can be supplied to the effect in portion, Yi Jizhi in oral pocket The effect that Mao Shike suppression tapered bristles is split.

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

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

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

It addition, what is called " the coating portion of bristle-like " here, it is to instigate a part for tapered bristles to be exposed and except dew Go out the part covered outside portion by bristle etc..

Tip side at tapered bristles body 46 is formed with top and narrows tapered portion 46A of shape.In tapered bristles body 46 Part in addition to this tapered portion 46A is matrix part 46B.The axial random cross-sectional shape of matrix part 46B is identical.

It addition, what is called " shape of cross section is identical " here, as long as substantially the same, such as, at cross section Area in also still allow for more than 0%, less than 15% difference.The cross section of matrix part 46B is triangle.Separately Outward, what is called " triangle " here, refer to by 3 be not located on same straight line and three lines connecting them The polygon that section is constituted, it is possible to being set to vertex of a triangle by described 3, apex has circular arc.

At matrix part 46B, the part of the base side of its triangle is set to inner edge portion 46a, and inner edge portion 46a is towards taper The central part side configuration of the cross section of bristle 45, the part of the summit side contrary with the base side of described triangle is set to Outer edge 46b, outer edge 46b configure towards outside in the cross section of tapered bristles 45.It addition, matrix part 46B, It is embedded in coating portion 47 so that outer edge 46b is projected into the state outside coating portion 47.

The prominent 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, it is configured with between 90 degree around the inside in coating portion 47 of bristle-like of circular cross-section Every tapered bristles body 46.

It addition, the radical of the tapered bristles body 46 for constituting tapered bristles 45, as long as having the effect of the present invention, Also can suitably change.

It addition, the configuration of tapered bristles body 46, as long as having the effect of the present invention, it is possible to suitably change, such as, Both can configure at equal intervals, it is possible to be not to configure at equal intervals.

It addition, Fig. 6 B only draws the end side of tapered bristles 45, but another side of tapered bristles 45 also forms cone Shape portion 46A etc. and become the shape identical with Fig. 6 B.Therefore, in the both end sides of length direction of tapered bristles 45 It is formed with tapered portion 46A etc., and makes the bundle of tapered bristles 45 be deformed into V-shape and utilize lenticular wire to be planted in tooth The head of brush, thus constitutes toothbrush.

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

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

It addition, the top of tapered portion 46A makes the toroidal with circular arc, with the horizontal stroke of the toroidal of described circular arc The Breadth Maximum in cross section is preferably the scope about 10 μm～100 μm.

In tapered bristles 45 shown in Fig. 6 A～B, identical with the tapered bristles of previous embodiment, owing to being cone Shape hair, the most easily inserts oral pocket by tapered portion 46A.Therefore, in the present embodiment, oral pocket is entered Entering is excellent, and the sweeping property of brush in oral pocket is excellent, cleans true feeling excellent.Additionally, in the present embodiment, due to 4 tapered bristles body 46 integrations are constituted tapered bristles 45, therefore, identical with the 1st embodiment, can obtain Obtain the effect that hair hardness is high.It addition, in the present embodiment, toothpaste can be maintained between 4 tapered portion 46A, Therefore identical with the 1st embodiment, it is possible to obtain when toothpaste can be supplied to the effect in portion in oral pocket and plant mao The effect that tapered bristles is split can be suppressed.

Fig. 7 A～B is the diagram of the tapered bristles 55 representing sixth embodiment of the present invention, and Fig. 7 A is tapered bristles The stereogram of the tip portion of 55, 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 and the tapered bristles of previous embodiment 1～5 Identical, planted the head in hard resin, in order to constitute toothbrush.

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

Tip side at tapered bristles body 56 is formed with top and narrows tapered portion 56A of shape.In tapered bristles body 56 Part in addition to this tapered portion 56A is matrix part 56B.The axial random cross-sectional shape of matrix part 56B is identical.

The cross section of matrix part 56B is circular.It addition, in the circle of matrix part 56B, by tapered bristles 55 The central part side of cross section 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 projected into the state outside coating portion 57 with outer edge 56b and is embedded in coating portion 57.

The prominent 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, it is configured with between 90 degree around the inside in coating portion 57 of bristle-like of circular cross-section Every tapered bristles body 56.

It addition, the radical of the tapered bristles body 56 for constituting tapered bristles 55, as long as having the effect of the present invention, Also can suitably change.

It addition, the configuration of tapered bristles body 56, as long as having the effect of the present invention, it is possible to suitably change, such as, Both can configure at equal intervals, it is possible to be not to configure at equal intervals.

It addition, Fig. 7 B only draws the end side of tapered bristles 55, but another side of tapered bristles 55 also forms cone Shape portion 56A and become the shape identical with Fig. 7 B.Therefore, in the both end sides shape of length direction of tapered bristles 55 Become to have tapered portion 56A, and make the bundle of tapered bristles 55 be deformed into V-shape and utilize lenticular wire to be planted in toothbrush Head, thus constitutes toothbrush.

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

It addition, work as the outermost sidepiece the tapered bristles body collection portion 59 constituted by 4 tapered bristles bodies 56 and cone When the diameter of the imaginary circle 58 that the center of shape bristle 55 couples together is set to the bristle footpath b of tapered bristles 55, bristle Scope about footpath b preferably 100 μm～300 μm, the scope about preferably 150～250 μm.

It addition, the top of tapered portion 56A makes the toroidal with circular arc, with the horizontal stroke of the toroidal of described circular arc The Breadth Maximum in cross section is preferably the scope about 10 μm～100 μm.

In tapered bristles 55 shown in Fig. 7 A～B, identical with the tapered bristles of previous embodiment, owing to being cone Shape hair, the most easily inserts oral pocket by tapered portion 56A.Therefore, in the present embodiment, oral pocket is entered Entering is excellent, and the sweeping property of brush in oral pocket is excellent, cleans true feeling excellent.Additionally, in the present embodiment, due to 4 tapered bristles body 56 integrations are constituted tapered bristles 55, therefore, identical with the 1st embodiment, can obtain Obtain the effect that hair hardness is high.It addition, in the present embodiment, toothpaste can be maintained between 4 tapered portion 56A, Therefore identical with the 1st embodiment, it is possible to obtain when toothpaste can be supplied to the effect in portion in oral pocket and plant mao The effect that tapered bristles is split can be suppressed.

Embodiment

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

It addition, the imaginary diameter of a circle that the outermost sidepiece of 4 tapered bristles bodies and the center of tapered bristles are coupled together I.e. the bristle footpath b of tapered bristles 5 is 200 μm.The width of the inner edge portion of tapered bristles body is 80 μm, from coating The width W1 of prominent outer edge is 80 μm, and projecting height H1 is 30 μm.

It addition, make the structure covered about 50% side of tapered bristles body with coating body.

It is two by 20 tapered bristles body one foldings so that the bristle count of each pieces is 40, and with 4 row × 7 row State lenticular wire carries out planting the toothbrush of the embodiment 1 that hair manufactures test.

Use the tapered bristles being constructed such that: be the tapered bristles of shape shown in Fig. 3 A～B, specifically, be by PBT Resin constitute cross section is rectangle four tapered bristles bodies, in the central shaft side engagement of tapered bristles, and with by The structure that a part of aspect of these 4 tapered bristles bodies is covered by the coating that PET resin is constituted, and in length side To both ends be respectively provided with tapered portion.Described tapered bristles, plants in the head being made up of acrylic resin.Taper The bristle footpath a of body brush is 90 μm, a length of 3mm of the tapered portion of the tip side of tapered bristles body.

It addition, the imaginary diameter of a circle that the outermost sidepiece of 4 tapered bristles bodies and the center of tapered bristles are coupled together I.e. the bristle footpath b of tapered bristles 5 is 190 μm.The width of the inner edge portion of tapered bristles body is 60 μm, from coating The width W2 of prominent outer edge is 80 μm, and projecting height H2 is 10 μm.To bore it addition, make with coating portion The structure that about 50% side of shape body brush covers.

It is two by 20 tapered bristles body one foldings so that the bristle count of each pieces is 40, and with 4 row × 7 row State lenticular wire carries out planting the toothbrush of the embodiment 2 that hair manufactures test.

As the tapered bristles of embodiment 3,4,5,6, use the tapered bristles of structure shown in table 1 below, and structure Become toothbrush.For the explanation of the tapered bristles of embodiment 3～6, in order to contrast, the taper of embodiment 1,2 The shape of bristle, the resin classification (resin 1) of tapered bristles body, the resin classification (resin 2) being coated to, bristle footpath A (μm), bristle footpath b (μm), taper length (mm), inner edge portion width W (μm), outer edge width W (μm), prominent Go out height H (μm), covering rate (%), bristle count (root), arrangement (arranging) be documented in the most in the lump in table 1 below.

[table 1]

As the tapered bristles of comparative example 1, make and there is columned body and be formed at 3 tapers on its top The tapered bristles of branched hair, the diameter of described columned body and an imagination diameter of a circle are identical, and this imaginary circle is The imagination that the outermost sidepiece of tapered bristles body that previous cross section is ovum type and the center of tapered bristles are coupled together Circle.This tapered bristles as described in Patent Document 1 as, manufacture by the following method: by one one cut Face is many of the monofilament banding of the clover type of three leaves and makes pieces, and this pieces is being cut into specific length After (25～about 35mm), its top ends is immersed in the hydrolyzable medicaments such as sodium hydrate aqueous solution.

As the tapered bristles of comparative example 2, the bristle fiber described in patent document 2 is used to make toothbrush.Right Bristle fiber carries out spinning, and this bristle fiber is in Fig. 5 of patent document 2, nylon system as shown in Figure 6 The inside on top layer of external diameter 190 μm be compounded with the compound resin that 3 sandwich layers of the polyester by diameter 60 μm are constituted Structure.The two ends of this bristle fiber are carried out high-quality green tea grinding respectively and a length of 3mm of tapered portion is processed in taper, Such as patent document 2 as shown in Figure 1, it is thus achieved that top ends has the bristle in 6 tapered bristles portions.Use with previously This bristle of the identical radical of embodiment, carries out planting hair, constitutes the toothbrush of comparative example 2.

Although the structure being equal to embodiment 1, but make and from the width W2 of the prominent outer edge of coating be 10 μm, projecting height H2 are the tapered bristles of the shape of 1 μm, and are planted and obtain comparative example 3 in head Toothbrush.

Although the structure being equal to embodiment 1, but make and from the width W2 of the prominent outer edge of coating be 130 μm, projecting height H2 are the tapered bristles of the shape of 80 μm, and are planted and obtain comparative example 4 in head Toothbrush.

Each toothbrush for the above-described, using the state split as the hair planting mao appropriateness, facing clean true feeling, Gap cleans true feeling, outward appearance identity, contact sense and overall merit and concentrates and be documented in table 2 below.

Table 2

Assessment item shown in table 2 and metewand are as follows.

Be two by pieces one folding of bristle, lenticular wire sandwiched this part of turning back, insert be formed at head plant pore in and Pieces is planted hair.The generation rate of splitting of mensuration bristle now, by following benchmark evaluation productivity.

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

B: almost do not produce split (more than generation rate 10ppm of splitting, less than 50ppm)

C: somewhat produce and split (more than generation rate 50ppm of splitting, less than 100ppm)

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

10 commentators clean in oral cavity with the toothbrush of each example, with clear to facing now of metewand the following Sweep effect to be evaluated.The average mark of 10 commentators is set to " A " for more than 4.0 points, by average mark 3.0 More than point, it is divided into " B " less than 4.0, by average mark more than 2.0 points, is divided into " C " less than 3.0, will be flat All marks are divided into " D " less than 2.0.

" metewand "

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

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

10 commentators clean in oral cavity with the toothbrush of each example, with metewand the following to gap cleaning now Effect is evaluated.The average mark of 10 commentators is set to " A " for more than 4.0 points, by average mark 3.0 More than point, it is divided into " B " less than 4.0, by average mark more than 2.0 points, is divided into " C " less than 3.0, will be flat All marks are divided into " D " less than 2.0.

" metewand "

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

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

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

" metewand "

5 points: very strongly feel the shape of high-quality green tea branch.

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

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

2 points: less feel the shape of high-quality green tea branch.

1 point: do not feel the shape of high-quality green tea branch.

10 commentators clean in oral cavity with the toothbrush of each example, with metewand the following to now to gum Contact sense is evaluated.The average mark of 10 commentators is set to " A " for more than 4.0 points, by average mark 3.0 More than point, it is divided into " B " less than 4.0, by average mark more than 2.0 points, is divided into " C " less than 3.0, will be flat All marks are divided into " D " less than 2.0.

" metewand "

5 points: without gum pain, contact sense is the best.

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

3 points: without gum pain, contact is felt.

2 points: gum feels somewhat pain.

1 point: gum feels severe pain.

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

From the result shown in table 2 it can be seen that have the structure of multiple tapered portion for the tip side of columned body For the tapered bristles made, as long as the structure of the present application, then plant a mao adaptability excellence, facing sweeping forces excellence, Gap cleaning power is the most excellent.

This is that facing sweeping forces and gap cleaning power are just owing to making the outer edge of tapered bristles body be projected into outside coating portion The reason improved.It addition, it is believed that be 20～120 μm from the prominent width W of the outer edge that coating highlights Scope be suitable, projecting height H be the scope of 10～70 μm be suitable.

It addition, it is believed that prominent width W from the prominent outer edge of coating, preferably bristle footpath b's The scope of 10%～30%, is projected into the projecting height H1 preferably brush of the outer edge 6b of foreign side from described coating portion 7 The scope of 5%～the 40% of hair footpath b.

Practicality in industry

Use the present invention, owing to a kind of tapered bristles, its manufacture method can be provided and there is described tapered bristles Toothbrush, as taper hair, is that softness contacts sense and enters the entering excellence of oral pocket to gum, and it is excellent that true feeling swept by brush Different, and bristle is difficult to split when planting mao or when using, and therefore, is industrially exceedingly useful.

Claims

1. a tapered bristles, it is characterised in that described tapered bristles is by tapered bristles body collection portion and resinous quilt Portion of covering is constituted,

2. tapered bristles as claimed in claim 1, it is characterised in that described tapered bristles body and described coating portion by Different resins is constituted,

3. tapered bristles as claimed in claim 1 or 2, it is characterised in that described tapered bristles body collection portion, logical One is touched each other at the central side of the cross section of this tapered bristles body collection portion in the side crossing each described tapered bristles body Change and constitute,

4. tapered bristles as claimed in claim 1 or 2, it is characterised in that described coating portion will be adjacent to The coating portion of the bristle-like that each described tapered bristles body covers,

5. tapered bristles as claimed in claim 1 or 2, it is characterised in that be projected into outside from described coating portion The prominent width of the outer edge of described tapered bristles body is the 5～50% of the diameter of described tapered bristles body, and projecting height is The 10～80% of the diameter of described tapered bristles body.

6. tapered bristles as claimed in claim 1 or 2, it is characterised in that remove in described tapered bristles body collection portion Part outside tapered portion is formed as, cross section is polygon-shaped or cross section is oval shape more than 3, less than 10 Tapered bristles body gather centered by the central shaft of described tapered bristles.

7. a toothbrush, it is characterised in that plant on head just like the taper according to any one of claim 1～6 Bristle.

8. a manufacture method for tapered bristles, is the method manufacturing tapered bristles, it is characterised in that described tapered brush Hair is made up of tapered bristles body collection portion and resinous coating portion,

Described manufacture method includes: