WO2006062187A1 - Tooth brush and method of processing bristle tip thereof - Google Patents

Tooth brush and method of processing bristle tip thereof Download PDF

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Publication number
WO2006062187A1
WO2006062187A1 PCT/JP2005/022632 JP2005022632W WO2006062187A1 WO 2006062187 A1 WO2006062187 A1 WO 2006062187A1 JP 2005022632 W JP2005022632 W JP 2005022632W WO 2006062187 A1 WO2006062187 A1 WO 2006062187A1
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WO
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Patent type
Prior art keywords
tufts
hair
toothbrush
tip
bristles
Prior art date
Application number
PCT/JP2005/022632
Other languages
French (fr)
Japanese (ja)
Inventor
Hiroyuki Kobayashi
Original Assignee
Lion Corporation
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Classifications

    • AHUMAN NECESSITIES
    • A46BRUSHWARE
    • A46DMANUFACTURE OF BRUSHES
    • A46D1/00Bristles; Selection of materials for bristles
    • A46D1/08Preparing uniform tufts of bristles
    • AHUMAN NECESSITIES
    • A46BRUSHWARE
    • A46DMANUFACTURE OF BRUSHES
    • A46D9/00Machines for finishing brushes
    • A46D9/02Cutting; Trimming

Abstract

A flat wire type implanted tooth brush having soft bristle tips, capable of providing soft touch feeling by the soft bristle tips, having the excellent fittability thereof to clearances between teeth and teethridge, and suitably used for the medical treatment and prevention of periodontal disease, and a method of processing the bristle tips of the tooth brush. The tips of tufts are formed in a roughly semispherical shape for each bristle bundle and cut by a ruffled cutting so that the tips of bristles can be covered by a large number of semispherical profiles. The implanted tooth brush comprises a head part (1) formed by implanting the tufts (4) formed by binding a plurality of bristles in two folds by a flat plate, and a neck part (5) and a grip part continued to the head part. The diameter of implanted holes (3) in which the tufts (4) are implanted is set to 1.7 to 2.3 mm, the shape of the tips of the tufts (4) implanted in the implanted holes (3) is formed in a roughly semispherical shape, and a difference (d) in height between the top parts and the bottom parts of the semispherical portion at the tips of the tufts is set to 1 to 3 mm, the width (W) of the implanted parts is set to 6 to 13 mm, the number of rows of the tufts in the lateral direction of the head part is set to 3 to 4, and the height (h) of the bristles is set to 7 to 13 mm.

Description

Specification

Toothbrush and hair processing method thereof

Technical field

[0001] The present invention relates to the Kesakika卩E manner as the flat wire type bristle toothbrush having a suitable brush profile used in the treatment and prevention of periodontal disease.

BACKGROUND

Conventionally, brush profiles of toothbrushes are various devices have been made, such as a dome cut hone between mountains cutting cuts and teeth and gums that is appropriate to clean between the teeth has become common. Also, it has been proposed also three-dimensional brush profile, Ru.

[0003] The toothbrush for periodontal disease, ease of polishing the boundary between the teeth and gums! /, Eye brush specifications are required, hair-cutting of the dome cut is being adopted. And force, and with a simple dome cut root portions between the teeth (, so-called interdental triangle) fit to the to properly cleaned up low ingredients corners there is room for further study. In addition, as a toothbrush for the gap portion of the cleaning of the user often periodontal disease that weakened the force gums such as mountains cutting cut and hair bundle cone force Tsu door is suitable, lacking in the comfort of softness per, hard to use It has been a thing.

[0004] On the other hand, with respect to stereoscopic 3D profile, common flat wire type bristles toothbrush cases, because of the Prof Eyring by passing a brush to the hair cutting cutter after flocking, the complex shape realized It was difficult. Therefore, there have been proposed, such as a toothbrush that conically tresses tip as design Tairasen formula bristles toothbrushes, height because practical bristles processing method of the processing difficulty has not been developed, actually It is applied to commercial products difficulty force ivy. As a method for producing a toothbrush that allows three-dimensional profile, the force Hitaira wire type planting method may be mentioned which in-mold forming the non-flat wire type flocking method productivity worse low ingredients product species switching resistance , capital investment is costly, likely to be the cost, is the blinking problem.

[0005] Hereinafter, brush profiles one of the conventional toothbrush, Te, prior patents, such cited documents are described et number force.

[0006] 1. depicted Patent Document 1 (Japanese Utility Model 57- 57733 discloses) toothbrushes forming the bristles line tufts in multiple stages. This toothbrush for-out stepped shape, not suitable for a toothbrush for the bristles comfort evil tool periodontal disease per. Moreover, it is not also expressly difficulty instrument specific production method to produce a flat wire type bristles from the brush shape.

Hitaira wire type bristles toothbrushes, for example, Ru Der feasible in such in-mold forming toothbrush, is costly.

[0007] 2. Patent Document 2 (real Unexamined 6 57231 JP)

Sterically toothbrush which has been subjected to the mountains cutting cut is shown. Since it has a sharp crest apex portion, for comfort per force is suitable for interdental cleaning is not soft, not suitable for the hub brush for periodontal disease. Further, there is no disclosure with respect to manufacturing process.

[0008] 3. Patent Document 3 (real Unexamined 7 17133 JP)

A first bristle bundle tip has a conical shape, and a second brush tufts are mixed tip portion is formed flat, first bristle bundles are longer than the second bristle bundles toothbrush are shown projecting Te. The toothbrush is suitable to brushing the gaps and the tooth surface between the teeth of the tooth, the tip of the first bristle bundles are pointed conically can be gently pine surge gum not, not suitable for toothbrush for periodontal disease. Also, the manufacturing method for obtaining the cone hair bundle is explicitly! A ヽ,.

[0009] 4. Patent Document 4 (JP-A-9 149 815)

One or more tuft no wider in the longitudinal direction of the bristle base and the tufts tip shape punctiform, linear or planar top been toothbrush without a counter force connexion roof shaped shown there. Toothbrush This is because it has a wide bristle bundle bristle base longitudinally to the side, fit of the root portion content between teeth to (interdental triangle) is not suitable for the toothbrush of low ingredients periodontal disease. For Tairasen brush Prof Eyring by cutting process of the formula flocked toothbrush is difficult adopts a Hitaira wire type flocking has a problem that the manufacturing cost tends to increase.

[0010] 5. Patent Document 5 (JP-A-10- 295447)

A cylindrical drum having an abrasive on a surface arranged revolving drivable, the polishing surface is shown bristles polishing apparatus of the brush forming the unevenness of the screw spiral is. The polishing apparatus is an effective rounding bristles device to the hair processing such as mountains cutting toothbrushes, there is room for improvement in such settings concave convex shape suitable for brush shape.

[0011] Patent Document 1: Japanese Utility Model 57- 57733 discloses (full text, all drawings)

Patent Document 2: Real Unexamined 6 57231 JP (full text, all drawings)

Patent Document 3: Real-Open 7- 17133 JP (full text, all drawings)

Patent Document 4: JP 9 149 815 discloses (full text, all drawings)

Patent Document 5: JP-A 10- 295447 discloses (full text, all drawings)

Disclosure of the Invention

Problems that the Invention is to you'll solve

[0012] Starting with the toothbrush described in Patent Document had the following problems in the brush profile of a conventional toothbrush.

[0013] (1) dome cut brush, because the bristles fit to the boundary between the teeth and gums is not enough, left-out polish there was a problem to death and immediately cleaning properties occur.

(2) gap cleaning of mountain cut cut and hair bundle cone cut brush with excellent is, Do gently is comfortable hit of the bristles, for, was inappropriate, such as the delicate periodontal disease patients of gum.

(3) complex brush shape as the tip are substantially hemispherical in each tuft, it is within the scope of the method of manufacturing the Tairasen flocking hub brush not been developed a method for machining rounded bristles , the product realization it is inevitable to adopt Hitaira wire type planting methods such as in-mold molding toothbrushes, there is a problem that the cost becomes high.

[0014] The present invention has been made to solve the above problems, and Ryakuhan spherical the tufts tip for each tuft, that brush tip is a large number of hemispherical profile covered with ripples cut more, bristles soft, excellent fit to per comfort tenderness tool teeth and gums of the gap, a suitable flat wire type flocked toothbrush used in the treatment and prevention of periodontal disease, the hair processing method it is an object to provide a.

Means for Solving the Problems

[0015] To achieve the above object, it adopts the following means in the present invention.

That is, the toothbrush according to claim 1 is a handle including a grip head portion and the neck portion, is composed of a hair bundle composed of a plurality of brush, each of the tufts in flocking holes formed in the head portion Rights are planted in the folio by line, Ru toothbrush you, Te, along with a 1. 7~2. 3mm diameter of the plant pores, substantially hemispherical tip shape of said capillary flux flocking plant pores it is obtained by the.

[0016] Here, the term "substantially hemispherical" in the present invention, a conical shape with rounded bristles Tabaitadaki portion, or is intended to refer to a quadrangular pyramid or a polygonal pyramid shape with rounded Motabaitadaki portion and the circumferential surface edge .

[0017] toothbrush according to claim 2 is that the claimed Te Contact! /, The toothbrush of claim 1, and the difference in height between the top and bottom of the hemispherical portion of the tip of said tuft and l~3mm it is.

[0018] hair processing method according to claim 3, wherein, said a claim 1 or order to produce a toothbrush 2 according bristles processing method, a plurality of direction forces said different for the toothbrush head a step of cutting the tuft tip substantially chevron with a cutter, and so that step the force shaping the tufts tip in a substantially hemispherical shape by processing rounded by hair rounder the tufts tip which is the cut it is intended.

[0019] wherein the hair processing method claim 4, wherein the Te you, the hair processing method according to claim 3, wherein, as the rounded front speechless destination device, using a hair rounder with an abrasive disc to rotate , from the disk center to the polishing surface of 該研 grinding disc outward, the helical irregularities in which the waveform is formed in the radial direction of the cross section, the helical irregularities hole pitch of the helical pitch the flocked hole If it sets almost the same, the difference in height of the helical irregularity, set substantially the same as the height difference between the top and bottom of the hemispherical portion, the spiral becomes uneven force polished surface of it is obtained by setting the polishing particle size in the range of # 100 to # 800.

[0020] hair processing method according to claim 5, wherein the contact on the hair processing method in claim 4, wherein, Te, Ken Migakumen first to use an abrasive disk having an abrasive grain size # 100 # 400 a step rounding, in which to include a degree second rounding E to use abrasive disk having an abrasive grain size # 400 to # 800 of the polishing surface.

[0021] 1. tufts tip shape

As described above, the tip shape of the tuft in the toothbrush of the present invention is substantially hemispherical. Or sharp-pointed as circular conical, no comfortable per soft is obtained when the shape as an edge is present in the peripheral surface on which a pointed tip as pyramidal, tufts tip of entire edge Do of, and desired to configure only a curved surface, but may have a slight flat surface Te ヽ Tsu the apex portion of the tufts tip. This flat surface, in order to impair the fit to between too large teeth and gums, it is desirable that the less a diameter of about 0. 5 mm.

[0022] The difference d of the height of the top and bottom of the hemispherical portion L~3mm, more preferably 1. 5 to 2. 5 mm. Because it is less than 1mm become "uneven effect is felt on the printing 掃時, concave convex effect exceeds 3mm inclination angle of the hemispherical portion side Nag saturated Surubaryokuri is too tight, deterioration in cutting property, cutter manufacturing difficulty of, such as shortening of the cutter life, a variety of problems occur of.

[0023] tuft diameter, i.e. the diameter of the planting hole to be planted tufts 1. 7 to 2. 3 mm, more rather preferably 1. is 8 to 2. 2 mm. 1. If it is less than 7mm too small amount of hair use of per bundle tuft, hair destination compromising the comfort per soon also Ya becomes an acute angle in the substantially hemispherical shape. 2. too many amount of hair use of per hair bundle 1 bundle of more than 3mm, impaired is fit to between the teeth and gums

[0024] planting between pores hole pitch P is 2. Preferably 0-4. About 5 mm. Pitch is too narrow planting pores cracking has occurred, that a poor comfort hit of the bristles to the planting density too wide falls.

[0025] An array of hair bundle, ie the sequence of planting pores are, in the preferred three to four rows of the head portion width direction! /,. For in the two rows below not be distributed a press 掃圧, comfort per bristles to evil spoon. If 4 rows of obtaining super operability in the oral cavity width of the head portion becomes too wide to bad spoon.

[0026] flocked section width W is 6~ 13mm is preferred! /,. If it is less than 6mm hamper the sequence of tufts, it deteriorates operability in the oral cavity exceeds 13 mm, undesirable. The head director hand side flocked portion length L along the direction is about 16~25mm is preferred from the viewpoint of oral operability.

[0027] Hair length h (the height from the bristle face tufts to the tip) is about. 7 to 13 mm is desirable. This in increases the feeling of hair waist below, softness is susceptible tend to lose. More in reduced buccal operability.

[0028] 2. each part the material of the toothbrush

The material of the brush (filaments) constituting the tuft, polyamide, polybutylene terephthalate (PBT), polytrimethylene terephthalate (PTT), polyethylene terephthalate (PET), polypropylene (PP), etc., used in the common toothbrush material It is preferred,.

[0029] brush diameter is preferably about the diameter 100 to 230 mu m which is generally used for toothbrushes! /,. Ama Ri thick brush is not suitable as a toothbrush, such as periodontal disease. Brush cross sectional shape circular cross section is preferred which is excellent in Tari resistance to any and may force.

[0030] Handle Material is polypropylene (PP), PET-based 榭脂, acrylic 榭脂, more elastomers (Orefuin based, styrene-based, polyethylene-based, urethane-based), such as those used in common toothbrushes Nara is not particularly limited. The handle may be color molding may be multicolor molding article using the E elastomer.

[0031] 3. hair cut processing

Bristled Kattoka 卩E is performed after securing dedicated to Folded the flocking holes by flat wire tresses a bundle of bristles plural.

[0032] For example, to retain the head portion of the toothbrush bristles were the hair bundle 90 degrees rotatable chuck. And, preferably pre-cut to near a brush tip of the set length hair in a flat cutting cutter. Then, first of all, cut the tip of the head portion side surface forces the capillary bundles to Ryakuyama shape with transverse cutter, then the chuck is rotated 90 degrees, from the head director hand Direction side with vertical cutter the tip of each hair bundle also be cut substantially in Yamagata. Note that this cut order is on the contrary, after cutting even head the longitudinal direction of the side force by the longitudinal cutter head portion side surface force by the lateral cutter even be cut Yo,.

[0033] In the case where the chuck as described above and 90 degrees rotating the blade of the cutlet coater in both vertical and horizontal cutter orientation of Yogu aspect if toward the same direction of the hair cutting direction changes of the chuck 90 degrees is performed by rotation. If you do not chuck the rotary is the orientation of the blade aspect cutter may be arranged to cross 90 degrees. In this case, the horizontal cutter to head the longitudinal direction of the side force slitting the yo bur, vertical cutter motion of conventional, cutting process is the intermittent rather than continuous, the vertical cutter is swung back and forth it is desirable that the hair cut.

[0034] Further, the aspect, the cutter step Nio of Zureka, Te if so Kassel sleeping defeat some of the brush like comb device, the tufts is substantially angular cut which is cut only in one direction because, as possible out to mix the hair bundle of the hair bundle and a conventional one-way Yamagata cut of the semi-spherical cut into tufts.

[0035] 4. rounding bristles processing

[0036] Since only cut by the vertical and horizontal cutters only cut the vertical and horizontal direction, tufts tip does not become substantially hemispherical shape, so to speak a substantially quadrangular pyramid shape. To a substantially hemispherical shape, may be also subjected to cutting forces like oblique direction is et al., Such a method Nag holes arranged in Chikarari it increases the cost by such increase in size of the equipment is also restricted, toothbrushes since the degree of freedom of design will be waiting narrow, which is not preferable.

[0037] In the present invention, chromatic with dropping the edge of the peripheral surface which is cut into a quadrangular pyramid shape, to finish in a substantially hemispherical shape rounded bristles, spiral irregularities the sectional waveform to the polishing surface performing hair rounding processing with bristles rounding apparatus. By polishing so as stroking tufts tip portion by the helical uneven force becomes polished surface was the sectional waveform, scrape the excess edge portions of the same time the peripheral surface when rounded tufts tip. Thereafter, perform rounding bristles brush one one of tufts tip by grinding grain fine bristles rounding apparatus. Finally, to remove the polishing powder attached to the toothbrush, such as by air blowing, after performing quality inspection to obtain a toothbrush of the present invention as a finished product.

[0038] As the hair rounding apparatus used in the present invention, handling is simple and inexpensive, hair rounder that takes no space is desirable. Such bristles rounder, it is preferable to use a hair rounder disc-shaped having a disk-shaped Migaku Ken the rotating disk. The polished surface of Migaku Ken a disc with a disc-shaped, giving an uneven cross-sectional waveform having a difference of substantially identical uneven pitch and the top and bottom of the height as the brush profile. This irregularity is a spiral irregularities directed from the disk center to the outer side.

[0039] tufts tip rounding processing rotates the polishing disk, the brush tip is passed while pressing about 0. 5~2Mm the polishing surface comprising a helical irregularities of the polishing disc. Spiral-shaped unevenness is fit to the brush tip while rotating, because sequentially judge the use hair, the hair is polished evenly. Rounding processing, the polishing by such spiral irregularities, a plurality of times while changing the research Migakutsubudo polishing surface (e.g. 2 times) is preferably performed.

[0040] Rounding Taking a case of performing processing twice as an example, during the first rounding machining, the polishing particle size of the polishing surface composed of helical irregularities in the range of # 100 to # 400, during the second rounding processing polishing particle size of the polishing surface composed of spiral irregularities is desired to be in the range of # 400 to # 800. Is Migaku Ken time, and once rounding processing per 1. about 5 to 3 seconds. When the processing time is too short, not out ten minutes rounding effect. Too long, so the productivity is undesirably reduced. Effect of the invention

[0041] According to the toothbrush of claim 1 wherein the diameter of the bristle hole for planting the hair bundle from 1.7 to 2. With a 3m m, approximately hemispherical tip shape of the tuft which is planted in the plant pores since the Jo, fits the boundary of the bristles the teeth and gums, with gentle software comfort per be a suitable flat wire type flocked toothbrush with such delicate periodontal disease of the gums.

[0042] Further, according to the toothbrush of claim 2 wherein the difference d of the height of the top and bottom hemispherical portions of the tufts tip L~3mm, since a. 6 to 13 mm flocked portion width W, the tooth it can be optimized flat wire type bristles toothbrush in the treatment or prevention of disease disorders.

[0043] Further, according to the hair processing method according to claim 3, wherein, after cutting direction force different multiple relative toothbrush head also tufts tip cutter substantially Yamagata, tuft is the cut tip the by processing rounded by bristles rounder, because it was Unishi by shaping the tufts tip in a substantially hemispherical shape, tufts destination end of that month 卩 E semispherical was difficult flat wire type bristles toothbrushes it can be processed easily and reliably in a substantially hemispherical shape to. Therefore, the need inexpensive capital investment can increase productivity, a flat wire type bristles toothbrushes were Prof Eyring the tufts tip in a substantially hemispherical shape can be provided at low cost.

[0044] Further, according to the hair processing method according to claim 4, wherein, as the bristles rounder, with hair rounder with a disc-shaped grinding disc which rotates, Ken abrasive disk with a discotic Contact! to form a helical irregularities in which the waveform Te ヽ in the radial direction of the cross section outward from the disk center Migakumen, the helical pitch p of the helical irregularities substantially the same as the hole-to-hole pitch of flocking holes and sets, sets the difference t of the uneven height substantially the same as the difference d of the height of the top and bottom of the hemispherical portion, the helical uneven force polished surface is also polished grain size of # 100 to # 800 so was set in the range, high quality with a simple adjustment!, it is possible to perform rounding complex hair processing. Further, since the equipment has a simple structure, excellent maintenance properties, low cost, it is possible to save space.

[0045] Further, according to the hair processing method according to claim 5, wherein dividing the machining processing rounding the bristle tips by the polishing disc into two steps of the first rounding step and the second rounding step, the first rounding step in abrasive particle size of the polishing surface with a # 100 # 400, since the second rounding step was polished particle size of the polishing surface with # 400 to # 800, the tufts tip easily and reliably in a substantially hemispherical shape leave in shaping the child transgression.

BRIEF DESCRIPTION OF THE DRAWINGS

[0046] [FIG. 1] shows a first embodiment of the toothbrush according to the present invention, (a) is a side view of the head portion, (b) is a front view of the head portion, (c) the hair is a plan view of the head portion is omitted bundle.

[Figure 2] shows a second embodiment of the toothbrush according to the present invention, (a) is a side view of the head portion, (b) is a front view of the head portion, (c) is omitted tufts it is a plan view of the head portion.

[Figure 3] shows an example of a hair processing device used in the hair processing method of the present invention, (a) is substantially 示側 sectional view showing the configuration of the instrumentation 置全 body, (b) stands for hair rounder示側 view, (c) is a schematic 示平 view of a disc-shaped abrasive disc.

[Figure 4] tufts shows the shape change due to hair processing of the tip, (a) shows the substantially 示拡 large perspective view of tufts tip after precut by the flat cutting cutter, (b) the mountain cut cut by the lateral cutter substantially 示拡 large perspective view of tufts tip after, (c) is substantially 示拡 large perspective of tufts tip after mountain cutting cut by longitudinal cutter view, is a (d) are substantially hemispherical shape by machining rounding bristles hair it is a schematic shows an enlarged perspective view of the bundle tip.

BEST MODE FOR CARRYING OUT THE INVENTION

[0047] Hereinafter, will be described with reference to the drawings, embodiments of the present invention.

Figure 1 shows a first embodiment of the toothbrush according to the present invention. In the figure, reference numeral 1 denotes a head portion of the hub brush, bristles of the two head portions, 3 planting hole, tufts planted by a flat wire type flocking 4, 5 a neck following the head portion the first embodiment has a head portion 1 which has been planted hair bundle 4 a bundle of printing hair plurality of folded in two by a flat wire, the neck portion 5 and the grip portion subsequent thereto (not shown) Contact the Tairasen formula bristles toothbrushes, Te, said diameter 2. 〖this also with the Omm tufts 4 24 flocking holes 3 order to flocking and the capillary bundles are planted in these planting hole 3 4 the tip shape obtained by a substantially hemispherical, the flocked portion width W 9. 2 mm, planting pores 3 of the head the longitudinal direction of the pitch between the holes 3. Omm, pitch between the holes of the head portion width direction 2 . 4 mm, the difference in height between the top and bottom of the hemispherical portion of Kakuketaba tip (peaks and troughs difference) d of 2. Omm, head longitudinal tuft row number seven rows, tufts of the head portion width direction the maximum number of columns 4 , It is obtained by the Hair length h and 10. 0 mm.

[0048] Toothbrush 1 is an injection molding machine and flat wire type flocked machine (not shown), and with bristles processing device 20 of FIG. 3 is manufactured as follows.

[0049] First, using an injection molding machine (not shown), the head unit 1 (width = 11. Omm) 〖This planting hole 3 (diameter = phi 2. Omm, head the longitudinal direction of the hole-to-hole pitch = 3 mm , the width direction of the bore between the pitch = 2. 4 mm, shape force becomes teeth Burashino ヽ bundles of polypropylene FIG. 1 (c) which arranged Bolt = 24) to a grid (WP638C: Sumitomo I 匕学 Co. ) by injection molding.

[0050] Next, in the general flat wire type flocking machine (ZT- 1: Zahoransuki Co.) was used, the planting pores 3 of the head portion 1, a plurality of brush (brush material: Polyamide 6 mil (0. 152 mm) hair: driving with a flat line while folded in two by bundling EI du Pont de Nemours and Company), a hair bundle 4. Then, the hair bundle flocking already toothbrush, while feeding at a predetermined speed by grabbing a mobile chuck 21 of Kesakika卩E device 20 of FIG. 3, the capillary bundles 4 hair length with flat cutting cutter short for illustration 10. Pureka Tsu to door to 5mm (see Figure 4 (a)).

[0051] Next, in, after cutting in a substantially chevron (mountainous pitch 3. Omm) each bristle bundle 4, which is the pre-cut by the transverse cutter 22 from the head portion side surface (see FIG. 4 (a)), the chuck 21 rotated 90 degrees, the longitudinal cutter 23 for cutting the head the longitudinal direction of the side in a substantially chevron (mountainous pitch = 2. 4 mm) (see FIG. 4 (c)).

[0052] In the cut state by the vertical and horizontal cutters, since tufts tip has a substantially quadrangular pyramid shape, by polishing the tufts tip with bristles rounder subsequently Dropping the pyramidal edges together rounding the bristles, shaping the tufts tip in a substantially hemispherical (see FIG. 4 (d)).

[0053] Specifically, carried out using two bristles rounder 28, 29 in FIG. 3 (a). The bristles rounding device 28, 29, and FIG. 3 (b) to indicate the general structure (c), the disk-like abrasive disc 26 forming a spiral irregularities 25 in which the sectional waveform to the polishing surface 24 the provided, the abrasive disc 26 is configured to rotate in the direction of arrow R, can control the rotation speed by the motor unit 27.

[0054] The first bristles rounding device 28, the unevenness of the helical irregularity 25 pitch p = 3. Omm, uneven height t = 2. Omm, abrasive particle size = # 100, is set in the disc rotation speed = 2000 rpm cage, the first bristles rounded tip portion of the bristle bundle 4 which has been cut into a substantially quadrangular pyramid shape using the apparatus 28 of this 2. grinding for 5 seconds, rounded tip with dropping the pyramidal edges, the difference in height of the tufts tip top and bottom d = 2. shaped into a substantially hemispherical Omm. [0055] Then, using the second bristles rounder 29 performs rounding processing brush one single bristles constituting the bristle bundle 4. The second bristles rounding device 29, uneven pitch p = 3. Omm, uneven height t = 2. Omm, abrasive particle size = # 400, is set in the disc rotation speed = 1500 rpm, the second bristle previously rounded to 2 seconds grinding tufts tip portion which is shaped into a substantially hemispherical with a device 29, for machining rounding brush one single bristle tips of tufts tip.

[0056] Finally, the polishing powder attached to the toothbrush air blow to remove the hair dust removing device 30, after performing the visual inspection, was obtained in Figure 1 as a finished product toothbrush.

[0057] Figure 2 shows a second embodiment of the toothbrush according to the present invention.

The second embodiment is a flat wire having a head portion 1 which has been planted hair bundle 4 a bundle of bristles plurality of folded in two by a flat wire, the neck portion 5 and the grip portion subsequent thereto (not shown) in formula flocked toothbrush, the fifteen diameter flocking holes 3 for planting the tufts 4 1. with an 8 mm, substantially hemispherical tip shape of each tuft 4 which is planted in these flocking holes 3 obtained by a flocking portion width W of 6. 6 mm, the hole pitch of the head the longitudinal direction of the planting pores 3 2. 8 mm, the hole pitch of the head portion width direction 2. 4 mm, Kakuketaba tip of the hemisphere the top and bottom of the Jo partial height difference d 1. 5 mm, tufts number of columns 5 rows of heads the longitudinal direction of tufts columns three rows of head width direction, the hair length h 9. Omm it is obtained by the.

[0058] Toothbrush in FIG. 2 is an injection molding machine and flat wire type flocked machine (not shown), and with bristles processing device 20 of FIG. 3 is manufactured as follows.

[0059] First, using an injection molding machine (not shown), the head unit 1 (width = 8. 6 mm) to planting holes 3 (diameter = phi 1. 8 mm, the head the longitudinal direction of the bore pitch = 2. 8 mm, the width direction of the bore between the pin Tutsi = 2. 4 mm, number of holes = 15) the polypropylene toothbrush handle comprising shape forces of Figure 2 arranged in a grid pattern (c) (WP638C: Sumitomo I 匕学 Co. ) by injection molding.

[0060] Then, using common flat wire type flocking machine (manufactured by Tsujimura Machinery Co.), the planting hole 3 of the head portion 1, a plurality of brush (brush material: Polyamide 6 mil (0. 152 mm) Hair: DuPont ) the bundled driving with a flat line while folded in two, the hair bundle 4. Then, the hair bundle flocking already toothbrush, while feeding at a predetermined speed by grabbing a mobile chuck 21 of Kesakika卩E device 20 of FIG. 3, the capillary bundles 4 hair length with flat cutting cutter short for illustration 9. precut to 5 mm (see Figure 4 (a)). [0061] Next, in, after cutting in a substantially chevron (mountainous pitch 2. 8 mm) each bristle bundle 4, which is the pre-cut by the transverse cutter 22 from the head portion side surface (see FIG. 4 (a)), the chuck 21 rotated 90 degrees, the longitudinal cutter 23 for cutting the head the longitudinal direction of the side in a substantially chevron (mountainous pitch = 2. 4 mm) (see FIG. 4 (c)).

[0062] In the cut state by the vertical and horizontal cutters, since tufts tip has a substantially quadrangular pyramid shape, by polishing the tufts tip with bristles rounder subsequently Dropping the pyramidal edges together rounding the bristles, shaping the tufts tip in a substantially hemispherical (see FIG. 4 (d)).

[0063] In this second embodiment, the first bristles rounding device 28, uneven peak Tutsi p helical irregularities 25 = 2. 8 mm, uneven height t = l. 5 mm, the polishing particle size = # 200, is set in the disc rotation speed = 2 OOOrpm, this first bristles rounding 2. grinding 5 seconds tip portion of the bristle bundle 4 which has been cut into a substantially quadrangular pyramid shape with a device 28, tuft rounded tip with dropping the leading edge, shaping the tufts tip at the top and bottom of the difference in height d = l. 5 mm semispherical.

[0064] Then, using the second bristles rounder 29 performs rounding processing brush one single bristles constituting the bristle bundle 4. The second bristles rounding device 29, uneven pitch = 3. Omm, uneven height = 1. 5 mm, the polishing particle size = # 800, is set in the disc rotation speed = 1500 rpm, the second bristles of this it cutting 2 seconds Labs the tufts tip portion which is shaped into a substantially hemispherical with a rounded device 29 performs bristles rounding machining brush one one of tufts tip.

[0065] Finally, the polishing powder attached to the toothbrush air blow to remove the hair dust removing device 30, after performing the visual inspection, was obtained in Figure 2 as a finished product toothbrush.

[0066] Incidentally, the first and second embodiments, when cut tufts tip by the cutter, the case of cutting from two directions of the head portion side surface and the head the longitudinal direction of the side has been taken as an example, the cut direction or three directions Nag limited to two directions more of the plurality of directions force even by be configured to cut, those.

[0067] than the tip shape of the hair bundle was subjected to test for effects on service performance of the toothbrush, and the results are shown in below.

[0068] [1] Evaluation Test of tufts tip shape

Ku toothbrush Specifications>

Handle: polypropylene "WP638C" (manufactured by Sumitomo Chemical Co., Ltd.) planted pores: hole diameter = φ 1. 8mm

Holes sequence = 2 + 4 + 4 + 4 + 4 + 2 (20 holes)

Hole pitch = head the longitudinal direction of 2. 8 mm, the width direction 2. a hair 8 mm: Polyamide (DuPont), diameter 6 mil (0. 152 mm) Hair

Hair length: 10 mm, the difference d = 2 mm of the height of the top and bottom

[0069] <Test Method>

By changing the shape of the tufts tip it was subjected to a sensory evaluation test of usability 'feeling. The results are shown in Table 1.

Subjects: 50 people

Use period: 1 month

[0070] [Table 1] Evaluation Test of usability due to a difference in tufts tip shape

○: good, △: Normal (not say either way), X: bad

[0071] As is clear evaluation results force in Table 1, tufts tip shape fit to the teeth and gums of the gap has a comfortable per gentle in Kogu software is substantially hemispherical.

[0072] [2] evaluation test of the brush size

Ku toothbrush Specifications>

Handle: polypropylene "WP638C" (manufactured by Sumitomo Chemical Co., Ltd.)

Planting pores: Hole SEQ = 2 + 4 + 4 + 4 + 4 + 2 (20 holes)

Hole-to-hole distance: lmm

Use hair: polyamide (DuPont), diameter 6mil (. 0 152mm) hair

Hair length: 10 mm tufts tip shape: substantially hemispherical

[0073] <Test Method>

Changing the difference in height of the planting pores diameter and top and bottom, was subjected to a sensory evaluation of the use of 'feeling. The results are shown in Table 2.

Subjects: 50 people

Use period: 1 month

[0074] [Table 2] Evaluation tests of usability due to a difference in planting pores diameter and peak-valley difference

○: good, △: Normal (not say either way), X: bad

[0075] From 2 evaluation results table, it revealed the following.

(1) planting hole diameter, because the decrease is too small "comfort per friendly soft" and "feel dirty fall", and too large, "fit to the teeth and gums of the gap" is reduced, φ ΐ . 7mm ~φ 2. about 3mm is preferable.

(2) difference in height between the top and bottom, because too small bristles from entering into the gap, reduces the "fit to the teeth and gums of the gap," too large "comfort per gentle soft" order but decrease, from 1.0 to 3. about 0 is preferred.

[0076] [3] Evaluation Test of polishing conditions

Ku toothbrush Specifications>

Handle: polypropylene "WP638C" (manufactured by Sumitomo Chemical Co., Ltd.)

Planted pores: hole diameter = Φ 2. Omm

Holes sequence = 2 + 4 + 4 + 4 + 4 + 2 (20 holes) Hole pitch = head the longitudinal direction of 3. Omm, widthwise 2. 4 mm for hair:. Polyamide (DuPont), diameter 6 mil (0 152 mm )hair

Hair length: 10 mm, difference in height between the top and bottom = 2 mm

[0077] <Test Method>

One toothbrush samples of the specification, Te, subjected to two rounds processed by bristles rounding apparatus using a disc-shaped grinding disc, check the tufts tip visually and microstrip Coop after each machining end, helical Jo unevenness of the height and pitch, was evaluated shaping suitability due to differences in polishing conditions such as polishing particle size. The results in Table 3, Table 4. Incidentally, the first rounding pressure E is mainly processing for rounding the semispherical the cut tuft tip surface in a substantially pyramidal shape, the second rounding processing subsequent thereto is rounded primarily hemispherical it is a processing for rounding brush one single bristles of the processed tuft destination end.

Number of samples: 50 lines

Rounding processing time: first, 2. five seconds second each rounding processing

[0078] [Table 3] Evaluation Test (first rounding processing) shaping suitability due to a difference in polishing conditions

[0079] [Table 4] Evaluation Test (second rounding processing) of shaping suitability due to the difference in the polishing conditions

Table 3, the evaluation results of Table 4, revealed the following.

(1) height of the helical irregularities, Giruka be small for the difference d of the height of the top and bottom of the substantially hemispherical portion or the irregularities without some flat surface, well until brush valleys Ri no longer be ground, since the brush crests too large conversely does not hit the well polished surface, the whole is not uniformly grinding. Thus, the helical irregularity height preferred to adjust the irregularities to be in the range of less Judges 2mm relative difference d in height of the top and bottom of the substantially hemispherical portion.

(2) the helical pitch of the helical irregularities, not completely judge use hair enough and too small, uneven effect too slow and too large is less likely to be exhibited, that also Do insufficient processing in any case. Thus, the helical irregularity pitch pitch tufts, i.e. it is desirable that the hole pitch and the same degree of planting pores.

(3) first abrasive grain in a substantially hemispherical rounded processing tuft tips of is preferably about # 100 to # 400. Since the particle size is too the shaping of the burr removal or hemispherical deteriorates small, can not be exhibited moderate frictional resistance is too large, Do can exhibit sufficient abrasiveness,

(4) polishing particle size in the second round brush one by one processing, the order of # 400 to # 800 are preferred. The machining rounding one by one brush, high enough to substantially hemispherical rounded pressurized E of the first tuft tip surface, grindability is necessary, therefore, abrasive particle size small, Hogayo.

DESCRIPTION OF SYMBOLS

1 head

2 flocked portion 3 planted pores

4 hair bundle

5 neck

20 hair destination processing equipment

21 chuck

22 horizontal cutter

23 vertical cutter

24 polished surface

25 spiral-shaped concave and convex

26 disc-shaped abrasive disc

27 motor

28 The first of the bristles rounder

29 second bristles rounder

30 hair powder removal device

d hemispherical portion height difference h Hair length of the top and bottom of the

L flocked portion length

P helical pitch

R direction of rotation

t uneven height

W flocked section width

Claims

The scope of the claims
[1] and the handle including a grip head portion and the neck portion, is composed of a hair bundle composed of a plurality of brush, each of the tufts are planted in two-folded by Tairasen the flocking holes formed in the head portion in Tei Ru toothbrush, the diameter of the plant pores from 1.7 to 2. with a 3 mm, toothbrush, characterized in that the tip shape of said capillary flux planted the plants pores was substantially hemispherical.
[2] In the toothbrush of claim 1 wherein, toothbrush, characterized in that the difference in height between the top and bottom of the hemispherical portion of the tip of the tuft and L~3mm.
[3] A hair processing method for producing a toothbrush according to claim 1 or 2 wherein the step of cutting the substantially chevron said tufts tip cutter from a plurality of different directions with respect to the toothbrush head When, hair processing method characterized by comprising the step of shaping the tufts tip in a substantially hemispherical shape by processing rounded by hair rounder the tufts tip which is the cut.
[4] In the hair processing method according to claim 3, wherein, as said bristles rounder, with hair rounder with a polishing de Isku rotating, toward the disc center force outward the polishing surface of the abrasive disc power connexion, the helical irregularities in which the waveform is formed in the radial direction of the cross section, and sets the helical pitch of the helical irregularities substantially the same as the hole-to-hole pitch of the flocked hole of the helical irregularity height the difference is, that the set substantially the same as the difference in height between the top and bottom of the hemispherical portion, setting the grinding particle size of the polishing surface composed of said helical irregularities in the range of # 100 to # 800 hair processing method according to claim.
[5] Te you, the hair processing method according to claim 4, wherein said rounding processing first rounding step and a polishing particle size of the polishing surface using an abrasive disk having an abrasive grain size # 100 to # 400 of the polishing surface # 4 00 # hair processing how to; and a second rounding process using a polishing disc with 800.
PCT/JP2005/022632 2004-12-09 2005-12-09 Tooth brush and method of processing bristle tip thereof WO2006062187A1 (en)

Priority Applications (2)

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JP2004356553 2004-12-09

Applications Claiming Priority (3)

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KR20077009806A KR101243431B1 (en) 2004-12-09 2005-12-09 Method of processing tooth brush bristle tip
JP2006546770A JP4831621B2 (en) 2004-12-09 2005-12-09 Hair processing method of the toothbrush
CN 200580042488 CN101076271B (en) 2004-12-09 2005-12-09 Tooth brush and method of processing bristle tip thereof

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WO2006062187A1 true true WO2006062187A1 (en) 2006-06-15

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KR (1) KR101243431B1 (en)
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014094129A (en) * 2012-11-09 2014-05-22 Taihei Kogyo Kk Brush end polishing method of inter-dental brush, and apparatus for the method
USD764177S1 (en) 2014-07-31 2016-08-23 Colgate-Palmolive Company Oral care implement
USD764176S1 (en) 2014-07-31 2016-08-23 Colgate-Palmolive Company Oral care implement

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2469688B (en) * 2009-04-24 2013-10-09 Hani Mostafa Awadalla Mostafa Dental cleaning device
DE102009024923A1 (en) * 2009-06-10 2010-12-16 Zahoransky Ag Toothbrush manufacturing method, involves fitting filaments of toothbrush with milling cutter on desired profile form, and straightening diagonal cutting surface at free points of filaments before rounding by additional grinding operation
KR101218711B1 (en) * 2011-06-28 2013-01-09 주현명 Toothbrush
CN102334830A (en) * 2011-09-24 2012-02-01 乔凯 Household purified water bucket cleaning brush

Citations (4)

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Publication number Priority date Publication date Assignee Title
JPH05508566A (en) * 1990-06-19 1993-12-02
JPH0619562U (en) * 1992-08-20 1994-03-15 信雄 石橋 toothbrush
JP2000270928A (en) * 1999-03-26 2000-10-03 Lion Corp Toothbrush
JP2003189940A (en) * 2001-12-28 2003-07-08 Lion Corp Toothbrush

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05508566A (en) * 1990-06-19 1993-12-02
JPH0619562U (en) * 1992-08-20 1994-03-15 信雄 石橋 toothbrush
JP2000270928A (en) * 1999-03-26 2000-10-03 Lion Corp Toothbrush
JP2003189940A (en) * 2001-12-28 2003-07-08 Lion Corp Toothbrush

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014094129A (en) * 2012-11-09 2014-05-22 Taihei Kogyo Kk Brush end polishing method of inter-dental brush, and apparatus for the method
USD764177S1 (en) 2014-07-31 2016-08-23 Colgate-Palmolive Company Oral care implement
USD764176S1 (en) 2014-07-31 2016-08-23 Colgate-Palmolive Company Oral care implement
USD813550S1 (en) 2014-07-31 2018-03-27 Colgate-Palmolive Company Oral care implement
USD814796S1 (en) 2014-07-31 2018-04-10 Colgate-Palmolive Company Oral care implement

Also Published As

Publication number Publication date Type
JP4831621B2 (en) 2011-12-07 grant
JPWO2006062187A1 (en) 2008-06-12 application
KR20070083864A (en) 2007-08-24 application
CN101076271A (en) 2007-11-21 application
CN101076271B (en) 2010-05-05 grant
KR101243431B1 (en) 2013-03-13 grant

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