WO2005060788A1 - Brosse a dents - Google Patents

Brosse a dents Download PDF

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Publication number
WO2005060788A1
WO2005060788A1 PCT/JP2004/019095 JP2004019095W WO2005060788A1 WO 2005060788 A1 WO2005060788 A1 WO 2005060788A1 JP 2004019095 W JP2004019095 W JP 2004019095W WO 2005060788 A1 WO2005060788 A1 WO 2005060788A1
Authority
WO
WIPO (PCT)
Prior art keywords
flocking
toothbrush
less
hole
hair
Prior art date
Application number
PCT/JP2004/019095
Other languages
English (en)
Japanese (ja)
Inventor
Naoshi Kanamaru
Toshiaki Kobayashi
Takao Katoh
Yuusuke Hakamata
Original Assignee
Lion Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lion Corporation filed Critical Lion Corporation
Priority to KR1020067014882A priority Critical patent/KR101165264B1/ko
Priority to JP2005516495A priority patent/JP4796847B2/ja
Priority to CN2004800389599A priority patent/CN1897844B/zh
Publication of WO2005060788A1 publication Critical patent/WO2005060788A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B3/00—Brushes characterised by the way in which the bristles are fixed or joined in or on the brush body or carrier
    • A46B3/16—Brushes characterised by the way in which the bristles are fixed or joined in or on the brush body or carrier by wires or other anchoring means, specially for U-shaped bristle tufts
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B2200/00—Brushes characterized by their functions, uses or applications
    • A46B2200/10—For human or animal care
    • A46B2200/1066—Toothbrush for cleaning the teeth or dentures

Definitions

  • the present invention relates to a flat-line flocking type toothbrush in which a bundle of a plurality of brushes is folded into a flocking hole on a head-planting surface by using a flat wire, and the bristle is planted.
  • the conventional toothbrush has 16-60 flocking holes per hole formed on the flocking surface of the toothbrush head at intervals of 1. Omm or more.
  • a bristled bunch of brushes is fixed with a flat wire so that the total length of the brushes is 32 to 120 and the total cross section of the brushes is 1.0 mm 2 or more.
  • Such a toothbrush has the characteristic that the bristle bundle is thick and the rigidity is high, so the plaque removing power is particularly high on the smooth surface and the occlusal surface.o
  • the brushes constituting the bristle bundle are supported by each other because the bristle bundle is thick, and the original flexible and powerful movement of the brush itself cannot be exhibited, and the cervical part, the interdental part, and the teeth If the hair tips are difficult to reach the narrow parts considered to be prone to oral diseases, such as the intertriangle, the hair bundles that are loosened by force become thicker and harder and tend to irritate soft tissues such as gums. was there.
  • the flat wire in the flat-line flocking type toothbrush has a length slightly longer than the diameter of the flocking hole, and when it is driven into the flocking hole, both ends thereof bite into the head resin around the hole. In this way, the hair bundle is folded in two and fixed in the flocking hole. As a result, the tuft is fixed to the tuft surface of the head without getting out of the tufting hole force.
  • the flat wire has a length of 1.9 mm-2.3 mm, a vertical width of 1.3-2. Omm in the depth direction, and a thickness of about 0.25 mm.
  • Patent Document 1 JP-A-8-19423
  • Patent Document 2 Japanese Patent Application Laid-Open No. 2001-314231
  • Patent Document 3 Japanese Patent Application Laid-Open No. 2002-360343
  • Patent Application Laid-Open No. H10-257922 Japanese Patent Application Laid-Open No. H10-257922
  • Patent Document 4 Japanese Patent Application Laid-Open No. H10-257922
  • plaque removal is important for the prevention of the two major dental diseases of periodontal disease and dental caries, and it can be polished to every corner of the oral cavity, and the plaque removing effect of oral disease-prone sites There is a strong demand for a toothbrush that is excellent in brushability and can be brushed comfortably without damaging the teeth.
  • Patent Document 5 Japanese Patent Publication No. 11-500946
  • Patent Document 6 Japanese Patent Application Laid-Open No. 2000-342334
  • Patent Document 7 Registered practical use
  • Patent Document 8 Japanese Patent Application Laid-Open No. 10-327930
  • Patent Document 9 Japanese Patent Application Laid-Open No. 10-327931
  • Patent Document 11 See Japanese Patent Application Laid-Open No. 7-143914.
  • Patent Document 1 JP-A-8-19423 (all pages, all drawings)
  • Patent Document 2 JP 2001-314231 A (all pages, all figures)
  • Patent Document 3 JP-A-2002-360343 (all pages, all drawings)
  • Patent Document 4 JP-A-10-257922 (all pages, all drawings)
  • Patent Document 5 Japanese Patent Publication No. 11-500946 (all pages, all drawings)
  • Patent Document 6 Japanese Patent Application Laid-Open No. 2000-342334 (all pages, all drawings)
  • Patent Document 7 Registered Utility Model No. 2549935 (all pages, all drawings)
  • Patent Document 8 JP-A-10-327930 (all pages, all drawings)
  • Patent Document 9 JP-A-10-327931 (all pages, all drawings)
  • Patent Document 10 Japanese Patent Publication No. 11-508168 (all pages, all figures)
  • Patent Document 11 JP-A-7-143914 (all pages, all drawings)
  • the conventional toothbrush has a high plaque removing power on the occlusal surface where the bristle bundle is thick, it is not always necessary to reach the bristle tip to an oral disease-prone part such as a cervical part, an interdental part, and an interdental triangle. Not enough. Attempts have been made to solve these problems by implanting fine hair bundles at high density. Little is known about the optimal thickness or spacing of hair bundles.
  • the present invention has been made in order to solve the above problems, and provides a high-quality toothbrush which does not generate a flocking defect such as a crack, whitening, warpage, or missing a flat line at the head portion during flocking. It is intended for that purpose.
  • the present invention is a flat-line flocking type toothbrush in which a bristle bundle is densely transplanted, but at the time of flocking, the flocking, whitening, warping, or missing of the flat line may occur at the head portion. It is another object of the present invention to provide a high-quality toothbrush which is flexible and has good flexibility in contacting teeth and soft tissues in the oral cavity and has excellent penetration into small gaps.
  • a toothbrush according to claim 1 is a toothbrush that is obtained by folding a bristle bundle of a plurality of brushes into a flocked hole in a flocked surface of a head portion using a flat wire and flocking the bundle.
  • the thickness of the flat wire is 0.10 mm or more and less than 0.22 mm.
  • a toothbrush according to a second aspect is the toothbrush according to the first aspect, wherein the width of the flat line is 0.9 mm or more and 2.5 mm or less.
  • toothbrush according to claim 3 Contact to the invention of claim 1 or 2 wherein, Te, the number per unit flocked area of the flocked the hair bundle 25 bundles / cm 2 or more, 80 bundles / cm 2
  • Te the number per unit flocked area of the flocked the hair bundle 25 bundles / cm 2 or more, 80 bundles / cm 2
  • the sum of the cross-sectional areas in the folded state of the brush implanted in each of the implanted holes is 1.0 mm 2 or less.
  • the flocked area is based on the specification of J IS S3016, and as shown in Fig. 1 (a), the outside of the flocked holes 3 lined up on the outer circumference of the flocked surface 2 of the head 1 is a straight line. It is the area S (the part surrounded by the dotted line) inside the part connected by.
  • the head portion is made of resin, and at least a part of the flocked hole is implanted in the flocked hole.
  • the flat wire breaks the resin near the flocked holes when the hair is driven, so that stress is generated in the resin.
  • the flat wire has a thickness of about 0.25 mm or more. If there are many thin-walled flocking holes or a large number of hair bundles per unit flocking area, the flat lines will be dense, and the In some cases, a large stress was generated in the grease, causing cracks or whitening in the grease in the head portion between the adjacent flat wires. In addition, when the flat lines are arranged in a straight line, cracks and whitening may occur.
  • a resin having a flexural strength of 150 kgZcm 2 or more and 600 kgZcm 2 or less, which is relatively easy to bend such as polyolefin resin such as polypropylene, is used for the head material.
  • polyolefin resin such as polypropylene
  • the bending strength as polyolefin resin 150k gZcm 2 or more, in the case of 600KgZcm 2 following relatively pliable ⁇ is particularly remarkable effect of reducing I spoon of warpage due to a thin wall of Tairasen There was found.
  • the bending strength is a value measured based on JIS K6758.
  • the thickness of the head portion is greater than 5. Omm, the operation in the oral cavity may be reduced. Is reduced. When the head is made thinner, operability is improved, but the amount of grease supporting the hair bundle is reduced and the strength of the head is inevitably reduced. And whitening may occur. On the other hand, if the head portion is too thin, the flocking hole becomes shallow, making it difficult to transplant the hair. Therefore, when the thickness of the head part was 2.5 mm or more and 5.Omm or less, a flocking experiment was performed using flat wires of various thicknesses.The thickness was 0.10 mm or more and less than 0.22 mm. When a flat wire having a thickness of preferably 0.13 mm or more and less than 0.22 mm was used, it became apparent that warpage, cracks, whitening, etc., occurred.
  • the thickness of the flat wire is 0.10 mm or more and less than 0.22 mm, preferably 0.13 mm or more and less than 0.22 mm based on the above-described various experimental results.
  • the width of the flat wire in the implantation depth direction the larger the width, the larger the contact area of the flat wire with the head resin, so that the flocking strength can be increased without increasing the allowance of the flat wire. It is possible. For this reason, when the head member is made of a resin such as polypropylene resin (PP) which is relatively soft and has a low flock strength, it is effective to increase the width of the flat line as much as possible in terms of the flock strength.
  • PP polypropylene resin
  • the flat line protrudes to the outside of the flocked surface, or the flocked surface is viewed from the head end side. Often shows a flat line when unattended, resulting in undesirable appearance It has been found.
  • the head material is made of polyacetal resin (POM) or saturated polyester resin (for example, acid-modified polycyclohexylene dimethylene terephthalate copolymer (PCTA), glycol-modified polycyclohexylene dimethylene terephthalate copolymer (PCTG)) or the like.
  • POM polyacetal resin
  • PCTA acid-modified polycyclohexylene dimethylene terephthalate copolymer
  • PCTG glycol-modified polycyclohexylene dimethylene terephthalate copolymer
  • the width of the flat line is set to 0.9 mm or more and 2.5 mm or less.
  • the number of tuft 20 bundles Zc m 2 before and after per unit flocking area is 1-2. 5 mm 2 approximately According to the experiments of the present inventors, the number of bristle bundles per unit flocking area is 25 bundles Zcm 2 or more, 80 bundles Zcm 2 or less, and the state of the brushes that are planted per flocked hole is folded. It was found that if the total cross-sectional area of the brush was 1.0 mm 2 or less, it was excellent in interdental penetration and plaque removal function, which would make it easier to touch the teeth and gums.
  • brush total cross-sectional area is preferably 1. 0 mm 2 hereinafter in one state folded that is planted in the planting hole, but more preferably in the range of 0.10 forces et 0. 70 mm 2.
  • the brush cross section is circular, the force equivalent to about 5 to 14 per hole for 7 mil (0.178 mm) bristles and 10 to 28 per turn is considered by design.
  • this number can be set arbitrarily according to the design toothbrush specifications, brush diameter, cross-sectional shape, and the like.
  • the frequency of defective hair transplantation was extremely high, such as the hair bundles coming off or slipping.
  • the rigidity of the thin flat wire can be increased by using a hard metal such as stainless steel as the flat wire material, and the occurrence rate of defective flocking can be reduced.
  • the present inventors have pursued a condition of the hair bundle thickness that satisfies both the brushing performance and the thin flat wire, and as a result, the sum of the cross-sectional areas of the brush in the folded state is 1. 0 mm 2 or less, more preferable properly is 0. 1 mm 2 or more, that the tufts of 0. 7 mm 2 or less, high as a high-density flocking a toothbrush, the restoring force of the hair bundle when planted while maintaining the brushing performance It is a toothbrush that can withstand even the most.
  • the distance between at least one of the flocked holes and the closest flocked hole is preferably 1. Omm or less, more preferably 0.25 mm or more, and 0.75 mm.
  • the range is as follows. If the spacing between the bristle bundles is too narrow, brushes will not enter between the teeth and the interdental penetration will be reduced. On the other hand, when the interval is widened, the appearance discrimination property and the feeling of actual cleaning are reduced. Also, if the interval is widened, the repulsive action of the hair bundles due to the brushing motion becomes stronger, and the brush hairs become rugged when brushing, which reduces the feeling of use. Smooth exercise is not exhibited, and the plaque removing effect is also reduced.
  • a conventional flat-line flocked toothbrush uses a flocked hole having a circular cross section of about 1.5 to 2.2 mm in diameter. A margin of 0.25 mm is set as the allowance of the flat wire to the pore edge. Planting a few hair bundles Even with a toothbrush having many pores, a certain level of flocking strength can be secured by increasing the thickness of the flat wire and the amount of hanging force, but there is a limit because it causes cracks and whitening.
  • Materials for the toothbrush nozzle including the head portion include polystyrene resin (PS), polypropylene resin (PP), polyethylene terephthalate resin (PET), acrylonitrile butadiene styrene resin (ABS), and cellulose propionate.
  • PS polystyrene resin
  • PP polypropylene resin
  • PET polyethylene terephthalate resin
  • ABS acrylonitrile butadiene styrene resin
  • CP polyarylate resin
  • PC polycarbonate resin
  • PCTA saturated polyester resin
  • AS Atari mouth-tolyl styrene resin
  • POM polyacetal resin
  • PBT poly Materials such as butylene terephthalate
  • the handle material is not limited to the above resin. Further, the shape, size and design of the toothbrush handle including the head portion are not limited at all.
  • the material of the flat wire is preferably a metal having excellent strength, such as brass or stainless steel.
  • hard plastics such as biodegradable plastics can also be used.
  • Grooves may be formed in the outer surface of the flat wire so as to be perpendicular to the direction in which the flat wire is driven to improve the flocking strength.
  • a normal toothbrush uses a flat wire having a thickness of about 0.25 mm.
  • flat wires are manufactured by rolling metal wires called round wires with rolls. Normally, a thick round wire is stretched to a thin round wire in a single step while heating in a furnace. The round wire used for a thin flat wire is thinner than usual, so make it uniform in one process I could't do that.
  • the thickness and length of the flat wire are directly related to the volume of the resin in the head portion destroyed by the flat wire. cash, based on the relation between such depths narrowing out of Tairasen, the ⁇ fracture volume 0. 1 mm 3 or more, preferably set to 0. 4 mm 3 or less and made such thickness and length.
  • the shape of the flocking hole is preferably a regular polygon such as a normal circle or square, but may be a shape having a major axis (long side) and a minor axis (short side) such as an ellipse, oval, or rectangle. Good.
  • a major axis (long side) and a minor axis (short side) such as an ellipse, oval, or rectangle.
  • the hole orientations it is possible to make specifications according to the desired interdental penetration, bristle contact, and actual brushing feeling.
  • the minor axis (short side) is arranged in parallel with the outer edge of the head, the flocking occurs when the head is viewed from the side.
  • the narrow side (short side) of the narrowed hair bundle becomes visible, making it look thinner than a circular hair bundle with the same brush count, and can also improve the appearance discrimination.
  • the hole arrangement of the flocking holes is generally a lattice-like arrangement, but may be arranged in a staggered manner in order to arrange the holes at higher density while avoiding interference between adjacent flat lines.
  • the hair bundle on the outermost side of the head portion can be made to look thin, and the discrimination of appearance can be improved.
  • the brushes are arranged along the flat line, so that the flocking strength is improved.
  • the shape of the flocking hole is preferably substantially rectangular in order to reduce the gap between the bristle bundle and the flocking hole.
  • the circumcircle of the hair bundle By making the minor diameter direction of the hair transplant hole coincide with the minor diameter direction of the flocking hole, the space between the flocking hole and the hair bundle can be reduced, and a flocking portion with excellent hairiness can be created.
  • the cross section of the brush to be used is circular
  • the shape of the flocking hole is preferably substantially elliptical or substantially oblong.
  • the material of the brush (filament) constituting the hair bundle includes polyester such as polyethylene terephthalate (PET), polybutylene terephthalate (PBT), and polytrimethylene terephthalate (PTT), nylon 6-10, nylon 6- Materials that can be melt-spun, such as polyamides such as 12, nylon 12, polyolefins such as polyethylene and polypropylene, and polyhalogenated vinyls such as polyvinylidene fluoride are used, but in terms of usability and durability, Nylon and polytrimethylene terephthalate are preferred. It is also possible to combine them according to the purpose, for example, by using these resins to make a brush with a double core-sheath structure and using different materials and surface conditions on the inside and outside.
  • polyester such as polyethylene terephthalate (PET), polybutylene terephthalate (PBT), and polytrimethylene terephthalate (PTT)
  • nylon 6-10 nylon 6- Materials that can be melt-spun, such as poly
  • the thickness of the brush is 3 to 10 mil (0.076 to 0.254 mm), preferably 5 to 8 mil (0.125 to 0.23 mm). It is also preferable to use brushes of different thicknesses within these ranges in consideration of the cleaning effect and durability. Particularly in the case of high-density specifications with a large number of flocking holes, the bristle of the brush is strengthened from the outer bristle to the central bristle, and the thickness, material, length, and color of the brush Changing the cross-sectional shape, etc. is also desirable from the standpoint of usability and appearance.
  • the types of brushes include round bristles (brushes with rounded tips), tapered bristles (brushes with tapered ends), diamond bristles (brushes with a rhombic cross section), and feather bristles (bristles). Is divided into feathers), other irregularly shaped bristles (brushes with a non-circular cross-section), gray knee bristles (brushes with abrasives), spiral catch bristles (spiral grooves).
  • indicator hairs brushes that have a colored outer sheath and indicate the time of replacement by wear of the outer layer
  • any shape such as a single plane shape, a mountain cutting shape, a concave-convex shape, or the like can be adopted. Furthermore, different hair cutting shapes may be used on the outer and inner sides, and on the front and rear ends of the head flocked surface.
  • the category of the toothbrush according to the present invention includes not only a manual toothbrush but also an electric toothbrush.
  • the thickness of the flat wire is 0.10 mm or more and less than 0.22 mm, cracks and whitening of the head resin around the flocking holes at the time of driving the flat wire. And the head does not warp.
  • the width of the flat wire is 0.9 mm or more and 2.5 mm or less. Strength can be secured.
  • toothbrush according to claim 3 the number of tufts per unit flocked area 25 bundles ZCM 2 or more, 8 0 bundles ZCM 2 or less, and folded the bristles are planted per planting pores 1 hole the sum of the cross-sectional area in the state 1. since the 0 mm 2 or less, an excellent toothbrush supple per comfort good Gushikamo interdental penetration resistance and plaque removal function to tooth and gum.
  • the thickness of the flat wire is 0.10 mm or more and less than 0.22 mm
  • the number of hair bundles per unit flocking area is 25 bundles Zcm 2 or more and 80 bundles Zcm 2
  • toothbrush according to claim 4 for at least some of the bristle holes, as well as the sum of the cross-sectional area of the brush constituting the tufts implanted in the plant pores and 1. 0 mm 2 or less, at least V, the distance between one flocked hole and the nearest flocked hole is set at 1.Omm or less, so that the tooth and the oral soft tissue can be comfortably contacted at the cervical and interdental areas. It is excellent in reach of hair tips to oral disease-prone areas such as interdental triangles, and can secure sufficient hair transplanting strength without causing head warpage, whitening or cracking of the resin.
  • FIG. 1 (a) —FIG. 1 (c) shows a first embodiment of a toothbrush according to the present invention.
  • FIG. 1 (a) is a schematic plan view of a head portion
  • FIG. FIG. 1 (b) is a schematic perspective view of a flat wire into which the hair bundle is driven
  • FIG. 1 (c) is a schematic explanatory view showing a state where the hair bundle is folded into two using a flat wire and driven.
  • FIG. 2 shows a second embodiment of the toothbrush according to the present invention, and is a schematic plan view of a head portion of an electric toothbrush.
  • FIGS. 3 (a) to 3 (f) are plan views each showing another example of a cross-sectional shape of a flocking hole and a brush.
  • FIG. 4 (a) —FIG. 4 (c) shows a third embodiment of the toothbrush according to the present invention
  • FIG. 4 (a) is a schematic view showing a relationship between a bristle bundle and a flat line.
  • FIG. 4 (b) is a schematic plan view thereof
  • FIG. 4 (c) is a partially enlarged plan view of a flocking hole in a head portion.
  • FIG. 5 (a) —FIG. 5 (c) is a diagram for explaining the resin destruction volume in the present invention
  • FIG. 5 (a) is a schematic diagram of a hair bundle implanted in a hair implantation hole and a flat line.
  • FIG. 5 (b) is a longitudinal sectional view
  • FIG. 5 (c) is a side sectional view.
  • FIG. 6 (a) —FIG. 6 (c) shows the shape of the head portion of the toothbrush used in the evaluation test.
  • FIG. 6 (a) is a schematic plan view of the head portion of an A type toothbrush.
  • FIG. 6 (b) is a schematic plan view of a head portion of a B type toothbrush, and
  • FIG. 6 (c) is a schematic plan view of a head portion of a C type toothbrush.
  • FIGS. 7 (a) to 7 (c) are schematic illustrations of warpage and thickness of a head portion.
  • FIG. 8 is a schematic plan view of a head section showing one embodiment of the toothbrush according to the present invention.
  • FIG. 9 is a schematic plan view of a head part showing another embodiment of the toothbrush according to the present invention.
  • FIG. 10 is a schematic plan view of a head section showing still another embodiment of the toothbrush according to the present invention.
  • FIG. 11 is a schematic plan view of a head part showing another embodiment of the toothbrush according to the present invention.
  • FIG. 12 is a schematic plan view of a head section showing still another embodiment of the toothbrush according to the present invention.
  • FIG. 13 is a schematic plan view of a head section showing another embodiment of the toothbrush according to the present invention.
  • FIG. 14 is a schematic plan view of a head part showing still another embodiment of the toothbrush according to the present invention.
  • FIGS. 15 (a) and 15 (b) show another embodiment of the toothbrush according to the present invention.
  • FIG. 15 (a) is a plan view of the entire toothbrush handle without a flocking hole
  • FIG. 15B is an enlarged plan view of the head portion.
  • FIGS. 16 (a) and 16 (b) show still another embodiment of the toothbrush according to the present invention.
  • FIG. 16 (a) is a plan view of the entire toothbrush handle without a flocking hole.
  • FIG. 16B is an enlarged plan view of the head portion.
  • FIG. 17 is a schematic plan view of a head section showing another embodiment of the toothbrush according to the present invention.
  • FIG. 1 (a) to 1 (c) show a first embodiment of a toothbrush according to the present invention.
  • the first embodiment shows an example in which the present invention is applied to a manual toothbrush.
  • FIG. 1 (a) is a plan view of a head portion
  • FIG. 1 (b) is an enlarged perspective view of a flat line.
  • FIG. 1 (c) is a schematic explanatory view showing a state in which the hair bundle is driven in two using a flat wire.
  • brushes implanted in the implanted holes are not shown in the figure for easy viewing.
  • 1 is a toothbrush head portion
  • 2 is a flocked surface of the head portion
  • 3 is a flocked hole formed in the flocked surface 2
  • 4 is a bristle 5 for driving a hair bundle 5 into the flocked hole 3 in two.
  • a flat line, 6 is a brush constituting the hair bundle 5, and the unit of the hair bundle 5 implanted in the hair implantation hole 3 of the hair implantation surface 2 of the head part 5
  • the number per unit of the hair implantation area 25 bundles Zcm 2 or more, 80 bundles with the ZCM 2 or less, the total cross-sectional area per hole in a state of being folded with a brush 6, which is planted in the planting pores 3 1. 0 mm 2 hereinafter, 0.
  • the width of the flat wire 4 (less than 0.22 mm) and the width of the flat wire 4 (the width in the depth direction when the flat wire 4 is driven into the flocked surface 2) are set to 0.9 mm or more and 2.5 mm or less.
  • the symbol L in the figure indicates the length of the flat line 4.
  • FIG. 2 shows a second embodiment of the toothbrush according to the present invention.
  • the second embodiment shows an example in which the present invention is applied to an electric toothbrush, and the figure shows a head portion of the electric toothbrush.
  • the number per unit of planted area of tufts 5 which are planted in the planting hole 3 flocked surface 2 of the head portion 1 25 bunch ZCM 2 or more , 80 bundles Zcm 2 or less, and the sum of the cross-sectional areas per hole in the folded state of the brush 6 implanted in the flocking hole 3 shall be 1.0 mm 2 or less, and the thickness t of the flat wire 4 Is 0.10 mm or more and less than 0.22 mm, and the width h is 0.9 mm or more and 2.5 mm or less.
  • the shapes of the flocking holes 3 and the brushes 6 used in the present invention are not limited to those shown in the figures, but may be various shapes as shown in Figs. 3 (a) and 3 (f). Can be adopted.
  • Fig. 3 (a) is an example of a circular flocking hole and a brush with a circular cross section
  • Fig. 3 (b) is an example of a circular flocking hole and a brush with a rectangular cross section
  • Figs. 3 (c) and 3 (d) are oval.
  • Fig. 3 (e) shows an example of a rectangular bristle hole and a brush with a circular cross section.
  • Fig. 3 (f) shows a rectangular bristle hole with a round cross section and a diamond cross section (a diamond cross section). Are shown below.
  • FIG. 4 (a) to FIG. 5 (c) show a third embodiment of the present invention.
  • a toothbrush in which a bristle bundle 5 in which a plurality of brushes 6 are bundled is folded into two in a flocking hole 3 of a flocking surface 2 of a head portion 1 using a flat wire 4 and planted.
  • the sum of the cross-sectional areas of the brushes 6 constituting the bristle bundles 5 implanted in the flocking holes 3 is 1.0 mm 2 or less, and the distance from any nearest flocking hole 3 (distance between the nearest flocking holes) D is less than 1.Omm
  • the volume V of the resin of the head portion 1 broken by the flat wire 4 is set to 0.1 mm 3 or more and 0.4 mm 3 or less.
  • the “sum of the cross-sectional areas of the brushes 6 constituting the bristle bundle 5” means, as shown in FIG. This is the sum of the cross-sectional areas of all brushes 6. Also, “distance to any nearest flocking hole 3 (distance between nearest flocking holes) D” As shown in FIG. 4 (c), the distance indicates the distance between the closest flocking holes among the plurality of flocking holes 3.
  • the "volume V of the resin destroyed by the flat wire 4" is, for example, as shown in Figs. 5 (a) to 5 (c), in the case of a flocking hole 3 having a circular cross section, V ( mm 3 ) Flat wire thickness t (mm) X Flat wire driving depth B (mm) X Flat wire hooking allowance C (mm) X 2 This value is given by the formula.
  • the portion where the flat line 4 is hooked is defined by the arc-shaped hole wall of the flocking hole 3. Therefore, the value of the resin fracture volume V (mm 3 ) is an approximate value in the above equation, but as shown in Fig. 4 (b), a straight line 4 was inserted in the minor axis direction of the oval-shaped flocking hole 3.
  • the sum of the cross-sectional areas of the brushes 6 constituting the bristle bundles 5 implanted in the flocking holes 3 is 1.0 mm 2 or less.
  • the hair bundle will be comfortable.
  • the distance D between any nearest flocking hole 3 and 1.Omm or less is 1.0 mm 2 or less.
  • the hair bundle has an appropriate hair bundle density and is excellent in interdental penetration and brushing feeling. Furthermore, since the volume V of the resin in the head portion 1 that is broken by the flat wire 4 is set to be 0.1 mm 3 or more and 0.4 mm 3 or less, it is possible to obtain an appropriate flocking strength. It is possible to prevent head warpage and whitening and cracking of the head resin. As a result, combined with the above effects, the hair tips can be easily reached to the oral cavity, such as the cervix, the interdental region, and the interdental triangle, which makes the tooth and the soft tissue in the oral cavity more comfortable. In addition, a toothbrush having sufficient flocking strength can be provided without causing warpage of the head portion, whitening or cracking of the resin.
  • Flocked hole shape rectangle (short side 1.35mm X long side 1.8mm)
  • Flocked hole shape circular (diameter 1.3 mm)
  • Flocked hole shape oval (short axis 0.64mm X long axis 1.52mm)
  • the toothbrush of the present invention (Examples 1 to 22) had a flocking state, a warp of the head portion, and the like in comparison with the toothbrush of the conventional specification (Comparative Examples 1 to 12). It was confirmed that the cracks were whitened and the flocking strength was poor.
  • the term "warpage” refers to the intersection between the parting line m and the tip of the head portion 1 before planting, as shown in Fig. 7 (a). As shown in the figure, it indicates the distance n between the extension of the parting line m after the flocking and the intersection P. Further, the head section thickness refers to the thickness T of the thinnest portion of the head section 1 as shown in FIG. 7 (c) (the same applies to the following tests).
  • ⁇ 0.1mm or more, less than 0.5mm
  • the flocking strength was measured based on the method specified in JIS S3016.
  • a sensory evaluation test of the toothbrush of the present invention was performed by 30 specialized panelists in the company of the applicant. The average value of the evaluations by 30 specialized panelists was used as the evaluation result. The results are shown in Table 2. As is evident from Table 2, the toothbrush of the present invention (Examples 23 to 26) has better hitting comfort, interdental penetration, and actual brushing feeling than the conventional toothbrush (Comparative Examples 13 to 16). Without It was confirmed that it was excellent
  • the sensory evaluation was based on the following criteria.
  • the evaluation of the warpage of the head portion was based on the following criteria.
  • ⁇ 0.1mm or more, less than 0.5mm
  • a toothbrush according to the third embodiment of the present invention (Experimental Examples 27 to 38) and a toothbrush of a conventional specification (Comparative Experimental Examples 17 to 24) were manufactured, and a flocking strength, a single-strength removal strength, and a head were prepared. Comparative experiments were conducted on the evaluation of the quality characteristics of warpage and cracking and whitening of the parts, and on the evaluation of the comfort, the interdental penetration, and the feeling of brushing. Table 5 shows the results. As is clear from Table 5, it was confirmed that the toothbrushes of the present invention were superior to the conventional toothbrushes in the overall evaluation.
  • the flocking strength was measured by the method specified in JIS S3016.
  • ⁇ 0.1mm or more, less than 0.5mm
  • the average value of the evaluations by 30 internal panelists was used as the evaluation result.
  • FIG. 8 shows Embodiment 39 which is a specific example of the toothbrush according to the present invention.
  • the specifications of each part are set as follows.
  • Head material Polypropylene (PP) + Santoprene (advanced under the trademark "Santoprene”.
  • Elastomer-1 Manufactured and sold by Systems, Inc. Purefyn-type elastomer
  • Flocked hole Substantially rectangular hole (short side 0) 64mm X long side 1.32mm X depth 3.8mm), 71 holes Number of hair bundles per unit flocking area: 41 bundles Zcm 2
  • FIG. 9 shows Embodiment 40 which is a specific example of the toothbrush according to the present invention.
  • Example 40
  • Head material Saturated polyester (PCTA)
  • Flocked hole Oval hole (short axis 0.64mm X long axis 1.52mm X depth 3. Omm), 79 holes Number of hair bundles per unit flocking area: 44 bundles, cm 2
  • FIG. 10 shows Embodiment 41 which is a specific example of the toothbrush according to the present invention.
  • the specifications of each part are set as follows.
  • Head material Polyacetal (POM)
  • Flocked hole Substantially rectangular hole (short side 0.64mm x long side 1.32mm x depth 2.5mm), 64 holes Number of hair bundles per unit flocking area: 45 bundles, cm 2
  • FIG. 11 shows Embodiment 42 which is a specific example of the toothbrush according to the present invention.
  • the specifications of each part are set as follows.
  • Head material Polyacetal (POM)
  • Flocked holes Substantially rectangular holes (short side 0.64mm X long side 1.52mmX depth 2. Omm), 74 holes Number of hair bundles per unit flocking area: 41 bundles Zcm 2
  • FIG. 12 shows Example 43 which is a specific example of the toothbrush according to the present invention.
  • the specifications of each part are set as follows.
  • Head material Saturated polyester (PCTA) + Primalloy (a polyester elastomer manufactured and sold by Mitsubishi Chemical Corporation under the trademark "Primalloy”)
  • FIG. 13 shows Embodiment 44 which is a specific example of the toothbrush according to the present invention.
  • the specifications of each part are set as follows.
  • Head material Polypropylene (PP) + Mirastomer (an olefinic elastomer manufactured and sold by Mitsui Iridaku Co., Ltd. under the trademark "Millastomer”)
  • Flocked holes Substantially rectangular holes (short side 0.65mm X long side 1.30mm X depth 3.2mm), 69 holes Number of hair bundles per unit flocking area: 40 bundles, cm 2
  • Head tip 9 mil (0.229 mm) diameter, 5 Zl holes (10 holes Z1 holes after folding)
  • FIG. 14 shows Embodiment 45 which is a specific example of the toothbrush according to the present invention.
  • the specifications of each part are set as follows.
  • Head material Polyethylene naphthalate (PEN) + plating
  • Flocked hole (1) Circular hole (diameter 1. Omm X depth 3. Omm), 2 holes
  • FIGS. 15 (a) and 15 (b) show Embodiment 46 which is a specific example of the toothbrush according to the present invention, and illustrates specific dimensions of each part.
  • FIG. 16 (a) and FIG. 16 (b) show Embodiment 47 which is a specific example of the toothbrush according to the present invention, and illustrates specific dimensions of each part.
  • Table 6 shows still another specific example of the toothbrush according to the present invention.
  • Examples 48-54 are examples of a manual toothbrush
  • Example 55 is an example of an electric toothbrush.
  • Each of these toothbrushes has the above-described conditions of the present invention, that is, the sum of the cross-sectional areas of the brushes constituting the bristle bundles implanted in the flocking holes is 1.0 mm 2 or less, and at least one of the flocking holes The distance between the nearest flocking hole and the distance between the nearest flocking holes (distance between the closest flocking holes)
  • V is 0. lmm 3 or more, so that 0. 4 mm 3 or less, is obtained by setting the specifications of each unit.

Landscapes

  • Brushes (AREA)

Abstract

L'invention concerne une brosse à dents de haute qualité dans laquelle est évitée une implantation de poils défectueuse, par exemple à cause d'une fissure, le blanchiment, le gauchissement et l'extraction de la plaque plate de la tête au cours de l'implantation des poils. Ladite brosse à dents est à implantation sur plaque plate formée par implantation dense de faisceaux de poils dans la tête, touchant de manière confortable et flexible les dents et les gencives, et présentant des espaces de taille réduite. Dans cette brosse à dents, les faisceaux (5) de poils formés par liaison d'une pluralité de poils (6) de brosse sont pliés en deux et implantés dans des orifices (3) d'implantation de la surface implantée (2) de la tête (1) à l'aide de plaques plates (4). L'épaisseur (t) de la plaque plate (4) varie de 0,10 à moins de 0,22 mm, sa largeur (h) varie de 0,9 à 2,5 mm, la quantité de faisceaux de poils implantés (5) par zone d'implantation unitaire varie de 25 à 80 faisceaux/cm2, et la somme totale des sections transversales des poils (6) de brosse implantés pour chaque orifice (1) d'implantation à l'état plié varie de 1,0 mm2 ou moins.
PCT/JP2004/019095 2003-12-24 2004-12-21 Brosse a dents WO2005060788A1 (fr)

Priority Applications (3)

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CN2004800389599A CN1897844B (zh) 2003-12-24 2004-12-21 牙刷

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JP2003426405 2003-12-24

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007151795A (ja) * 2005-12-05 2007-06-21 Kao Corp 歯ブラシ
US20080294067A1 (en) * 2005-12-22 2008-11-27 Mdz Beheer B.V. Brush, Such as for Cleaning or Sampling Body Tissue
JP2016063912A (ja) * 2014-09-24 2016-04-28 サンスター株式会社 歯ブラシ
KR20160065829A (ko) 2013-10-02 2016-06-09 라이온 가부시키가이샤 칫솔용의 핸들체 및 그 제조 방법 및 칫솔
WO2018198772A1 (fr) * 2017-04-24 2018-11-01 ライオン株式会社 Brosse à dents
JPWO2019107489A1 (ja) * 2017-11-30 2020-11-26 ライオン株式会社 電動歯ブラシ用取替ブラシ及び電動歯ブラシ

Families Citing this family (10)

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WO2009078463A1 (fr) * 2007-12-18 2009-06-25 Lion Corporation Brosse à dents
KR100925228B1 (ko) * 2008-03-06 2009-11-06 이하우 칫솔모 고정용 평선의 제조방법 및 이에 의한 칫솔모고정용 평선
US8402591B2 (en) 2009-07-01 2013-03-26 Colgate-Palmolive Company Toothbrush having improved tuft retention and anchor wire
JP5530776B2 (ja) * 2010-03-24 2014-06-25 ライオン株式会社 歯ブラシ
JP2017176224A (ja) * 2016-03-28 2017-10-05 ライオン株式会社 歯ブラシ
JP6906313B2 (ja) * 2017-01-17 2021-07-21 ライオン株式会社 歯ブラシ
TWI802701B (zh) * 2018-05-31 2023-05-21 日商獅子股份有限公司 牙刷
CN108783860A (zh) * 2018-08-31 2018-11-13 冯诗婕 牙刷
CN115363334A (zh) * 2021-05-19 2022-11-22 好维股份有限公司 一种牙刷
CN114504186A (zh) * 2022-03-23 2022-05-17 好维股份有限公司 一种密孔牙刷的制作方法

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JP2001008732A (ja) * 1999-06-29 2001-01-16 Lion Corp ブラシ製品
JP2001314231A (ja) * 2000-05-08 2001-11-13 Lion Corp 歯ブラシ
JP2003189940A (ja) * 2001-12-28 2003-07-08 Lion Corp 歯ブラシ

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JP2001008732A (ja) * 1999-06-29 2001-01-16 Lion Corp ブラシ製品
JP2001314231A (ja) * 2000-05-08 2001-11-13 Lion Corp 歯ブラシ
JP2003189940A (ja) * 2001-12-28 2003-07-08 Lion Corp 歯ブラシ

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007151795A (ja) * 2005-12-05 2007-06-21 Kao Corp 歯ブラシ
US20080294067A1 (en) * 2005-12-22 2008-11-27 Mdz Beheer B.V. Brush, Such as for Cleaning or Sampling Body Tissue
US8864683B2 (en) * 2005-12-22 2014-10-21 Mdz Beheer B.V. Brush, such as for cleaning or sampling body tissue
KR20160065829A (ko) 2013-10-02 2016-06-09 라이온 가부시키가이샤 칫솔용의 핸들체 및 그 제조 방법 및 칫솔
JP2016063912A (ja) * 2014-09-24 2016-04-28 サンスター株式会社 歯ブラシ
WO2018198772A1 (fr) * 2017-04-24 2018-11-01 ライオン株式会社 Brosse à dents
JP2018183275A (ja) * 2017-04-24 2018-11-22 ライオン株式会社 歯ブラシ
CN110573043A (zh) * 2017-04-24 2019-12-13 狮王株式会社 牙刷
CN110573043B (zh) * 2017-04-24 2022-04-19 狮王株式会社 牙刷
JPWO2019107489A1 (ja) * 2017-11-30 2020-11-26 ライオン株式会社 電動歯ブラシ用取替ブラシ及び電動歯ブラシ

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CN1897844A (zh) 2007-01-17
KR101165264B1 (ko) 2012-07-19
JPWO2005060788A1 (ja) 2007-12-13
KR20060134031A (ko) 2006-12-27
JP4796847B2 (ja) 2011-10-19
CN1897844B (zh) 2010-12-08

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