CN1468072A - Low friction toothbrush - Google Patents
Low friction toothbrush Download PDFInfo
- Publication number
- CN1468072A CN1468072A CNA018167284A CN01816728A CN1468072A CN 1468072 A CN1468072 A CN 1468072A CN A018167284 A CNA018167284 A CN A018167284A CN 01816728 A CN01816728 A CN 01816728A CN 1468072 A CN1468072 A CN 1468072A
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- Prior art keywords
- hairbrush
- ping
- slip
- agent
- bristle
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Classifications
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- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B9/00—Arrangements of the bristles in the brush body
- A46B9/02—Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups
- A46B9/04—Arranged like in or for toothbrushes
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- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B9/00—Arrangements of the bristles in the brush body
- A46B9/06—Arrangement of mixed bristles or tufts of bristles, e.g. wire, fibre, rubber
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- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46D—MANUFACTURE OF BRUSHES
- A46D1/00—Bristles; Selection of materials for bristles
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- 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
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- 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
- A46B2200/108—Inter-dental toothbrush, i.e. for cleaning interdental spaces specifically
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- Brushes (AREA)
- Artificial Filaments (AREA)
Abstract
A brush for use in cleaning teeth, and a method for cleaning teeth using such brush, in which bristles are used in the brush that are prepared from a composition containing a thermoplastic polymeric resin in admixture with a slip agent.
Description
It number is No. 60/237302 right of priority that the application requires to enjoy the U.S. Provisional Application submitted on October 2nd, 2000.
Technical field
The present invention relates to the method for a kind of toothbrush and a kind of cleaning teeth.Particularly, the present invention relates to use the composition that comprises thermoplastic polymer and slip(ping)agent, with the filament of preparation as the bristle in the toothbrush.
Background technology
The bristle routine that is used in the toothbrush is to be made by the filament of thermoplastic polymer preparation.Have the demand of the cleaning efficacy that improves constantly the toothbrush bristle of making by such polymer filaments at present.The present invention relates to a kind of method that improves the cleaning efficacy of such toothbrush bristle, it is to realize by the frictional coefficient that reduces when bristle contacts operation with tooth.Had been found that the process useful of the frictional coefficient when reducing toothbrush bristle contacts operation with tooth, promptly made bristle by the filament of the preparation of compositions that comprises thermoplastic polymer and slip(ping)agent.
U.S. Pat 5462798 (Gueret) discloses a kind of hairbrush as the thick liquid cosmetic product that applies nail varnish for example or mascara.The bristle of hairbrush or fine hair are to be made by the plastics that comprise slip(ping)agent.The existence of slip(ping)agent has reduced the wetting properties of coating fine hair, and has limited product attached on the fine hair.This situation has improved product and has been retained in trend in the basic unit that will apply, rather than is retained on the fine hair, and has promoted the thick-layer product to be distributed in the basic unit.
In the patent of Gueret, do not mention and use such fine hair or bristle to be used for cleaning teeth.Yet we find to use the bristle of being made by the filament of the preparation of compositions of thermoplastic polymer and slip(ping)agent, can reduce the frictional coefficient when bristle contacts operation with tooth, thereby reach the effect of the cleaning efficacy that improves bristle.
Summary of the invention
On the one hand, the present invention comprises a kind of hairbrush that is used for cleaning teeth, and it has the bristle by preparation of compositions, and said composition comprises the thermoplastic polymerization resin who is mixed with slip(ping)agent.
On the other hand, the present invention comprises a kind of passing through, and the hairbrush that has by the bristle of preparation of compositions (a) is provided, and wherein composition comprises the thermoplastic polymerization resin who is mixed with slip(ping)agent; And (b) this hairbrush is applied on one or more dental surfaces with cleaning teeth, come the method for cleaning teeth.
Have been found that the toothbrush among the present invention has superior cleaning efficacy, especially for interdental cleaning, this is because the bristle of toothbrush is to be made by the filament with slip(ping)agent.
Description of drawings
Fig. 1 is the side-view of toothbrush.
Fig. 2 is the end view of toothbrush.
Fig. 3 is the orthographic plan of toothbrush.
Fig. 4 is the side-view of toothbrush.
Fig. 5 is the side-view of toothbrush.
Fig. 6 shows the toothbrush of stranded bristle.
Fig. 7 shows the toothbrush of overlapping winding bristle.
Fig. 8 is the end view of overlapping winding bristle toothbrush.
Fig. 9 shows the boundary friction gauge.
Embodiment
Can be made by various known thermoplastic polymers as the filament of bristle in the present invention, wherein thermoplastic polymer comprises polymeric amide, polyester, polyolefine, fluoropolymer, urethane, polyvinyl chloride, polyvinylidene dichloride, styrene polymer and multipolymer and their any compatible combinations.Polymeric amide preferably, it partly comprises nylon 6, Ni Long11, nylon 6-6, nylon 6-10, nylon 10-10, nylon 6-12.Polyester as the filament manufacturing comprises polybutylene terephthalate and polyethylene terephthalate and their mixture.In multiple polyolefine, polypropylene is preferred.In the material, nylon 6-12 is most preferred in the above.
When in meta-cresol, measuring according to ASTM D-2857, make the polymkeric substance of filament in the present invention, for example nylon can have about limiting viscosity of 0.9 to 1.5.
Slip(ping)agent used in this invention is so any material, and when adding it and be used for making the composition of filament with formation in polymkeric substance, it will reduce the coefficient of friction that filament contacts with tooth and operates when filament is used as toothbrush bristle.The slip(ping)agent that is used to prepare such composition comprises: for example fluorinated olefin polymer, boron nitride, molybdenumdisulphide, graphite, soccerballene (fullerene) and talcum powder.Wherein, the fluorinated olefin polymer of tetrafluoroethylene for example preferably.Being used in slip(ping)agent in the composition accounts for the weight percent of gross weight that polymkeric substance adds the composition of slip(ping)agent and is approximately 0.5 or more, preferably be approximately 1 or more, and preferredly be approximately 2 or more, yet it is approximately 10 or still less, preferably be approximately 6 or still less, and preferredly be approximately 4 or still less.
The filament manufacturing can be by using a forcing machine realize, forcing machine is the forcing machine of the various ways of for example twin screw extruder that can obtain from the manufacturers of for example Werner and Pf1eiderer.The polymkeric substance of particle form supplies to the forcing machine from the feeder unit according to measuring volume or gravimetry ground.Slip(ping)agent supplies to the forcing machine from independent feeder by the sidewall mouth, and mixes with polymer phase under 150-285 ℃ temperature in forcing machine.Selectively, slip(ping)agent can make up in advance or be pre-mixed with polymkeric substance, thereby does not need isolating plenum system.Polymkeric substance and slip(ping)agent melting mixing in forcing machine, result are that composition is outputed in the spinning pack with template quantitatively.Polymkeric substance is crushed to the filament of different shape and size through filtering by the hole in the template.
The cross-sectional shape of filament is to be determined by the shape in the hole in the template, and it can be the Any shape of circle, ellipse, rectangle, trilateral or any regular polygon for example; Perhaps filament can be irregular, non-circular shape.Filament can be solid, hollow on its cross section or comprise the shape of a plurality of longitudinal spaces.Have the template in different shape hole by use, the operation each time of forcing machine can produce the combination of any cross-sectional shape.Have the template in various size hole by use, the filament of single or multiple diameter can create simultaneously.In toothbrush of the present invention, preferably use solid, single line filament circle, that have basic uniform cross-section size.
Selectively, filament used in this invention can be made by melt-spinning or solvent spinning.
In extrusion, after template was come out, it solidified in water quench tank at thin silk thread, transmitted by a series of draw rolls that are used to extend 1.5 to 6 times of original lengths then.Filament pulls according to one section that quicken and slow down and the one section process repeats of returning uniformly that comprises of linear rate.By making second roller device move sooner, be implemented in directed and stretching, extension between two roller devices, to improve the longitudinal strength of filament than first roller device.Can heat directed filament then,, present crooked preferably restorer to cause partly crystallization.Add thermal-setting and realize with the form of gas usually, for example by blow the hot gas of about 30 to 120 times in second to filament; Perhaps realize, for example by making filament in the time in about 2 to 10 seconds, pass an oil bath with the form in the liquid bath.Then filament is wrapped on the wrapping head of cylinder for example or bobbin.
Another aspect of the present invention comprises the use of a kind of sheath/core type filament, and wherein sheath is to be made by the polymkeric substance that is mixed with slip(ping)agent, but core is to be made by pure polymkeric substance, wherein is not added with slip(ping)agent.By slip(ping)agent is set in sheath, most of slip(ping)agent is present on the surface of filament or in its vicinity, so that the effect of desirable reduction friction to be provided.Sheath with co-axial or concentric structure round core.Being used in core can be identical or different with polymkeric substance in the sheath, but because they must be consistent in most of situation by suitable bonding between core and sheath.Nylon 6-12 is the material preferably as sheath.
Sheath/core type filament is jointly extruded manufacturing by using two shared common spinning packs of forcing machine usually.The polymkeric substance that is used to make core is directed to the center of spinneret hole from first forcing machine, and the composition that is used to make sheath is directed to the outside of spinneret hole from second forcing machine.
As mentioned above, sheath/core type filament is made by the flowable polymer or the polymeric composition of multi-source, and this filament is different from only single strand filament, and this is because it is to be made by the flowable polymeric composition in single source.The single filament in single like this source can be expressed as " monofilament ".Though filament used in this invention can be sheath/core type filament or monofilament, monofilament is preferred.
Filament used in this invention can be rectilinear, curved, annular or arciform; Can also be taper, featheredge, the tip end or butt end.The linear filament that preferably has smooth, circle or blunt ends.
Filament used in this invention has diameter or largest cross-sectional sized, and it is approximately 1 Mill or bigger, is preferably about 2 Mills or bigger, and more preferably is approximately 2.5 Mills or bigger; Yet it is approximately 15 Mills or littler, is preferably about 10 Mills or littler, and more preferably is approximately 5 Mills or littler, and 1 Mill equals 0.025 millimeter.
Filament used in this invention has (1) and arrives the tensile modulus of 1000kpsi by about 100 of ASTM D-638 measurement, and is preferably about 400 to 700kpsi; (2) arrive the tensile strength of 100kpsi by about 10 of ASTMD-638 measurement, and be preferably about 40 to 80kpsi; (3) about elongation of 1% to 100% of measuring by ASTM D-638, and be preferably about 10% to 50%; And recover by about bending of 80% to 100% that the bent spindle method measures (4), and being preferably about 92% to 100%, this bent spindle method is announced in the 5th interim " BendRecovery of Tynex and Herox Nylon Filaments " literary composition in disclosed tynex nylon available in September, 1971 (Tynex Nylon) filament technical data from E.I.duPont de Nemours and Company company and has been described.
Filament used in this invention can comprise other additive or have coating, as long as they do not influence the work of slip(ping)agent.For example filament can comprise antimicrobial additive or therapeutical agent.
Filament used in this invention is as the bristle of toothbrush.Toothbrush can be made by the technology that comprises fiber setting, ferrule and filament, metal strip, welding or sub-mounting technology as known in the art.In toothbrush, filament often in groups together as bristle to form bristle tuft.It is one intrafascicular that the filament of different colours, diameter, polymeric composition, length and shape can be combined in, to obtain special hairbrush feature or outward appearance.
The color of bristle usually is important in toothbrush.Filament used in this invention can have any desirable color that obtains in the composition of making filament by pigment, dyestuff or tinting material are added to, as long as they do not influence the work of slip(ping)agent.Filaments bundles can manufacture the shades of colour that comprises at random and the form of shape.Therefore bristle tuft can be formed in a branch of in and/or between bundle and bundle, have the variation of CF, and this makes hairbrush of making have attractive visual effect, or the wherein different shape of selection is so that special the finished product feature is more remarkable.
This toothbrush of the Any shape that relates to here design kind can make making of bristle be used for cleaning teeth.In Fig. 1-3, show a kind of typical manual toothbrush 2, wherein a branch of 4 of bristle 6 be fixed on the brush 8 and extend out from it along vertical direction usually at least, and brush is smooth or the surface of substantially flat.A branch of 4 have many bristles according to the present invention's preparation, and brush 8 has plurality of bristles bundle 4 usually.Brush 8 is connected again on the brush holder 10, and brush 8 and brush holder 10 form brush body 12.The structure of bristle tuft 4 and brush 8 can change, and can be oval-shaped, crest curve, concave curved, smooth, " V " shape is zigzag or any other desirable structure.Toothbrush in Fig. 1 comprises the bristle tuft along straight line row and column guiding, but bristle tuft can arrange by any way, for example the oblique line guiding or each row or column of back and staggering mutually of front.And illustrated embodiment shows the length of bristle is identical basically, and bristle can be cut into any desirable length, different length, other shape, for example flute profile or other desirable configuration.The length that bristle is stretched the position from brush is typically uniform basically, and between about 5 to 15 millimeters, and preferably between 8 to 14 millimeters.In addition, the axis of brush 8 and brush holder 10 can be on identical or different plane.Hairbrush also goes for the electric-controlled mechanical operation as shown in Figure 1.
Selectively, toothbrush of the present invention can have shape garden shape or columniform, wherein bristle can be from central axis along a plurality of directions towards radially extending out around the periphery of central axis.For example, as shown in Figures 4 and 5, columniform brush body 14 has the first and second opposite axle heads 16 and 18 and be generally columniform sidewall 20.Spiral slot 22 is formed on the cylindrical side wall 20, and 16 extends to end 18 directions from the end.Bristle 24 is fixed in the spiral slot and along cylindrical side wall and extends.Also can use by a plurality of spiral slots of random brachymemma for this purpose.Though the variation on present embodiment does not illustrate, can cut out the longitudinal slot that parallels to the axis along cylindrical side wall, and in each longitudinal slot fasten bristles.Groove recited above can be processed in the solid of cylindrical brush body, if brush body is a hollow, the bristle that is arranged in the groove can fix from the inside of brush body.
Selectively, in having toothbrush of the present invention circular or cylinder form, the stationary installation that is different from brush body can be used for fixing the bristle that radially extends out from central axis towards the neighboring with respect to central axis along a plurality of directions.For example, as shown in Figure 6, cylindrical brush 26 can form by two of stranded, stacked or overlapping windings or more bristle assemblies, and for example the bristle assembly 28,30 and 32.The stranding machine 34 of any suitable design can be used for the bristle assembly is twisted together.Stranded bristle assembly can bond together by quick-setting caking agent or the solvent that is applied to the junction of bristle assembly convergence by device 36.Also can use other technique for fixing of the extruding of polymeric material for example, thermal welding and friction interlock.
The variation of embodiment among Fig. 6 has been shown among Fig. 7, and wherein hairbrush 38 is made by two strands of immobilization materials 40,42 of spiral winding and bristle 44.Spiral stranding device 46 is collected three isolating chargings, forms for example holding device of wire rod by immobilization material, and bristle clamp in holding device, and is produced the hairbrush 38 that spiral twines.One end view of hairbrush 38 has been shown among Fig. 8.The end view of hairbrush 26 has similar outward appearance.This toothbrush sometimes as interdental or adjacent between hairbrush.
In having toothbrush of the present invention circular or cylinder form, wherein bristle radially extends out from central axis towards the neighboring around central axis along a plurality of directions, can have about 0.5 to 6 millimeter length from the bristle portion that central axis highlights, and be preferably about 1 to 4 millimeter.That this toothbrush is not limited to illustrate above here or discuss any specific embodiment, can also make by the bristle assembly described in U.S. SN09/092094, SN09/092094 can merge with the application and as the application's a part, fully as illustrating here.
Superiority effect of the present invention will prove by a series of embodiment that describe below.Embodiment on basis of the present invention only is illustrative, can not limit scope of the present invention.By these embodiment of the present invention are compared with the comparative group that some does not have distinguishing characteristics of the present invention, can better understand the importance of embodiment.
The composition of testing in example prepares with main batching by mixing nylon 6-12, and wherein the slip(ping)agent of polytetrafluoroethylene (PTFE) is changed nylon 6-12 by for example adding.Employed PTFE is the MP1400 that provided by DuPont or the special teflon of Micropowder (ultrafine powder) of MP1600, and is that the weight percent that is used in main ingredient is 30% contents level.The average particulate size that the special teflon of MP1400 ultrafine powder is had is in 7 to 12 micrometer ranges, and the average particulate size that the special teflon of MP1600 ultrafine powder is had is in 4 to 12 micrometer ranges.Comparative group comprises the test of the nylon 6-12 that is not added with slip(ping)agent.
In two kinds of situations of example and comparative group, mixed composition or nylon this fusing and mixing in forcing machine are measured by melt pump then, and are extruded to form circular filament by spinning pack and spinneret plate.Filament is quenching in water, heats the transition point of above-mentioned vitreum to nylon then, and initial length is extended 3 to 5 times to obtain the filament that leads.Then filament is arranged in the gas between 150 to 180 ℃ and heats, to be used for the needed crooked kind of recovering of toothbrush filament.With filament coated surfaces lubricant, pack then subsequently.
Interface friction test by describing below, the filament that test is made in mode recited above to be determining frictional coefficient, and also as the bristle of making toothbrush.Each toothbrush all is the smooth toothbrush of 44 bundles by definite length device processing, and is to be similar to the toothbrush shown in Fig. 1.
The size and the content of the filament of the composition of testing in example have been shown in the table 1, have wherein shown the content of the special fluorine wheel of in final composition MP1400 or MP1600 ultrafine powder, the residuum of each composition all is nylon 6-12.And comparative group A and B are made by the nylon that is not added with any slip(ping)agent, do not include the special fluorine wheel of ultrafine powder in shown in the table 1 they.
Table 1: the amount of the special teflon of ultrafine powder and the size of filament in example 1-7 and comparative group A, B
| The kind of ultrafine powder | The weight percent of ultrafine powder | The filament size | |
| Example 1 | ????MP1400 | ????2％ | 8 Mills |
| Example 2 | ????MP1400 | ????4％ | 8 Mills |
| Example 3 | ????MP1600 | ????2％ | 8 Mills |
| Example 4 | ????MP1600 | ????4％ | 8 Mills |
| Comparative group A | Do not have | Do not have | 8 Mills |
| Example 5 | ????MP1600 | ????1％ | 7 Mills |
| Example 6 | ????MP1600 | ????2％ | 7 Mills |
| Example 7 | ????MP1600 | ????4％ | 7 Mills |
| Comparative group B | Do not have | Do not have | 7 Mills |
Test filament in example 1-7 and comparative group A, B by interface friction, to determine frictional coefficient.Friction is the reactive force of two matrix relative movement in contact, and this is smooth and produce by the air spots of the difference material of making matrix.(i) keep a matrix with respect to another matrix have the needed power of even velocity and (ii) the ratio between the vertical pressure between the surface be frictional coefficient, it is the value of a no unit.Determine by using boundary friction gauge (frictometer) by the frictional coefficient that interface friction tests out.
The boundary friction gauge has been shown among Fig. 9.When material (here for filament) and material contact, and when material (filament) and smooth chromium surface contacted, it measured the frictional coefficient between them.When the measurement carried out between filament/filament, the sample of filament is wrapped on the refill or pipe 48 that is installed on the live spindle 50.Free filament 52 by the same material manufacturing is suspended on the core 48 of inhaling the silk covering.An end that hangs filament 52 is connected on the strain gage 54 of Statham transmitter for example, and its other end is connected on the weight 56.Weight can be to strain effectively to hang filament so that itself and any weight that core 48 closely contacts still can not make the performance distortion of hanging filament or make the strain gage overload.This weight of heavy typically is 30 grams.The core 48 that filament covers rotates with 0.0016 to 32cm/s speed.Measure by strain gage by the tension force that the motion of passing the core 48 that the filament that hangs filament 52 covers produces, and the value of frictional coefficient is calculated by tension data.When the measurement carried out between filament/metal, on the smooth chromium surface that free filament 52 is suspended on axle, replace to follow aforesaid identical process it is suspended on core 48 that filament covers.
The result of the filament/filament interface friction test that is used for example 1-4 and comparative group A has been shown in the table 2 below.In table 2, the speed that illustrates is the friction-motion speed of the axle measured with cel (cm/s).These results demonstrate in each speed of measuring, are used in the filament that includes slip(ping)agent among the example 1-4 than the filament that does not include slip(ping)agent that is used among the comparative group A, present lower frictional coefficient.Because have slip(ping)agent in the filament that uses in example 1-4, this lower frictional coefficient demonstrates, the friction when the friction ratio between the core that hangs the covering of filament and filament uses the filament that does not include slip(ping)agent under the situation of comparative group A is little.
Table 2: the result of filament/filament interface friction test
| ?0.0016c ?m/s | ?0.0032 ?cm/s | ?0.0320 ?cm/s | ?0.3200 ?cm/s | ?3.200 ?cm/s | ?32.0000 ?cm/s | |
| Example 1 | ?0.25 | ?0.25 | ?0.24 | ?0.24 | ?0.23 | ?0.26 |
| Example 2 | ?0.23 | ?0.22 | ?0.22 | ?0.22 | ?0.22 | ?0.24 |
| Example 3 | ?0.24 | ?0.24 | ?0.23 | ?0.22 | ?0.22 | ?0.24 |
| Example 4 | ?0.21 | ?0.20 | ?0.20 | ?0.20 | ?0.20 | ?0.22 |
| Comparative group A | ?0.38 | ?0.40 | ?0.56 | ?0.50 | ?0.36 | ?0.40 |
The result of the filament/metal interface friction testing that is used for example 1-4 and comparative group A has been shown in the table 3 below.In table 3, the speed that illustrates is the friction-motion speed of the axle measured with cel (cm/s).These results demonstrate in each speed of measuring, are used in the filament that includes slip(ping)agent among the example 1-4 than the filament that does not include slip(ping)agent that is used among the comparative group A, present lower frictional coefficient.Because have slip(ping)agent in the filament that uses in example 1-4, this lower frictional coefficient demonstrates, the friction when the friction ratio between suspension filament and the metallic surface uses the filament that does not include slip(ping)agent under the situation of comparative group A is little.
Table 3: the result of filament/metal interface friction testing
| ??0.0016 ??cm/s | ??0.0032 ??cm/s | ??0.0320 ??cm/s | ??0.3200 ??cm/s | ??3.200 ??cm/s | ??32.0000 ??cm/s | |
| Example 1 | ??0.22 | ??0.21 | ??0.22 | ??0.23 | ??0.26 | ??0.34 |
| Example 2 | ??0.21 | ??0.22 | ??0.22 | ??0.22 | ??0.23 | ??0.31 |
| Example 3 | ??0.21 | ??0.21 | ??0.21 | ??0.23 | ??0.24 | ??0.32 |
| Example 4 | ??0.20 | ??0.20 | ??0.21 | ??0.23 | ??0.24 | ??0.32 |
| Comparative group A | ??0.32 | ??0.31 | ??0.33 | ??0.37 | ??0.47 | ??0.69 |
The result of the filament/metal interface friction testing that is used for example 5-7 and comparative group B has been shown in the table 4 below.In table 4, the speed that illustrates is the friction-motion speed of the axle measured with cel (cm/s).These results demonstrate in each speed of measuring, are used in the filament that includes slip(ping)agent among the example 5-7 than the filament that does not include slip(ping)agent that is used among the comparative group B, present lower frictional coefficient.Because have slip(ping)agent in the filament that uses in example 5-7, this lower frictional coefficient demonstrates, the friction when the friction ratio between suspension filament and the metallic surface uses the filament that does not include slip(ping)agent under the situation of comparative group B is little.
Table 4: the result of filament/metal interface friction testing
| ??0.0016 ??cm/s | ??0.0032 ??cm/s | ??0.0320 ??cm/s | ??0.3200 ??cm/s | ??3.200 ??cm/s | ??32.0000 ??cm/s | |
| Example 5 | ??0.12 | ??0.11 | ??0.11 | ??0.13 | ??0.16 | ??0.34 |
| Example 6 | ??0.12 | ??0.11 | ??0.12 | ??0.12 | ??0.14 | ??0.33 |
| Example 7 | ??0.11 | ??0.10 | ??0.10 | ??0.10 | ??0.11 | ??0.23 |
| Comparative group B | ??0.14 | ??0.13 | ??0.14 | ??0.16 | ??0.24 | ??0.44 |
The filament of use-case 5-7 and comparative group A, B is as the bristle of toothbrush and make toothbrush respectively.Test each toothbrush with passage curative effect (IAE) between the tooth of determining the hairbrush stroke.Testing apparatus is constructed according to the design described in " by the toothbrush of design of different bristles and rigidity in the lip-deep use of abutment teeth " of Scand.J.Dent.Res.1979:98:424-430 of Nygaard-Ostby, Edvardsen and Spydev01d.The measuring technology of estimating the hairbrush curative effect is included on the single tooth of the teeth patterning of simulating the front and back, independently estimates in vertical and two of levels are brushed teeth action with each toothbrush of the 250 toothbrush weight that restrain.All toothbrushes stored 48 hours at least under 67-70 temperature before test.The operation of brushing teeth is that bristle is placed on the dental surface with 90 ° angle.Tooth brushing device is that per second has the stroke of 50mm to be provided with brush 15 seconds in two strokes.The brush teeth maximum width of stroke or IAE noting on the pres-sure sensitive paper of the tooth setting of simulation front and back.Various tests on each toothbrush repeat four times.
Illustrated in the table 5 below to determining the test result of IAE.In table 5, four kinds of test charts are shown AV, PV, AH and PH.AV represents front vertical (promptly the vertical stroke on the dental surface) in front, and PV represents that the back is vertical, and AH represents the front level, and PH represents the back level.For each example or comparative group, write down four multiple mean values of each test and standard deviation (S.D.), and write down by the mean value of all the 16 times tests of on a particular toothbrush, carrying out and the thoroughly evaluating that standard deviation calculation is come out.This record result is that unit is measured with the millimeter, and also is that unit is measured with the millimeter at each peak width by particular toothbrush stroke cleaning.
Table 5:IAE test result
| ????????AV | ????????PV | ????????AH | ????????PH | Comprehensively | ||||||
| Mean value | S.D. | Mean value | S.D. | Mean value | S.D. | Mean value | S.D. | Mean value | S.D. | |
| Example 5 | ?0.83 | .05 | ?1.11 | .03 | ?0.67 | .05 | ?0.51 | .03 | ?0.78 | .23 |
| Example 6 | ?0.87 | .05 | ?1.11 | .02 | ?0.68 | .04 | ?0.61 | .05 | ?0.82 | .20 |
| Example 7 | ?0.85 | .06 | ?1.13 | .03 | ?0.70 | .04 | ?0.78 | .12 | ?0.86 | .17 |
| Comparative group A | ?0.75 | .04 | ?1.09 | .03 | ?0.68 | .04 | ?0.56 | .08 | ?0.77 | .21 |
| Comparative group B | ?0.82 | .06 | ?1.10 | .02 | ?0.69 | .05 | ?0.56 | .05 | ?0.79 | .21 |
Result in table 5 shows, and except special case seldom, includes the hairbrush of the bristle of being made by the composition of nylon and slip(ping)agent (example 5-7), and is wideer than the zone of the brush cleaning of the bristle that does not wherein include slip(ping)agent (comparative group A and B).The zone that hairbrush among the example 5-7 is can be in the stroke of identical size wideer than the brush cleaning among comparative group A and the B, this is owing to have slip(ping)agent in the bristle of the hairbrush of example 5-7, it can reduce the friction that produced by these bristles when contacting with tooth, so that bristle is moved further in each stroke.Wideer cleaning area by the hairbrush of example 5-7 obtains also causes the IAE evaluation of estimate that they obtained higher, and this illustrates that they have superior cleaning than the toothbrush of the bristle that does not include slip(ping)agent, particularly the cleaning effect between tooth.
Claims (20)
1. hairbrush that is used for cleaning teeth, it comprises the bristle by preparation of compositions, and said composition comprises the thermoplastic polymerization resin who is mixed with slip(ping)agent.
2. hairbrush as claimed in claim 1, it is characterized in that this thermoplastic polymerization resin is one group and comprises one or more in polymeric amide, polyester, polyolefine, fluoropolymer, urethane, polyvinyl chloride, polyvinylidene chloride and styrene polymer and the multipolymer.
3. hairbrush as claimed in claim 1 is characterized in that this thermoplastic polymerization resin is a polymeric amide.
4. hairbrush as claimed in claim 3 is characterized in that, this polymeric amide is nylon 6-12.
5. hairbrush as claimed in claim 1 is characterized in that, this slip(ping)agent is one group and comprises one or more in fluorinated olefin polymer, boron nitride, molybdenumdisulphide, graphite, soccerballene and the talcum powder.
6. hairbrush as claimed in claim 1 is characterized in that this slip(ping)agent is a tetrafluoroethylene.
7. hairbrush as claimed in claim 1 is characterized in that said composition comprises slip(ping)agent, is approximately 0.5 or be approximately 10 or still less but this slip(ping)agent accounts for the weight percent of gross weight that polymkeric substance adds the composition of slip(ping)agent more.
8. hairbrush as claimed in claim 1 is characterized in that, this bristle extends from a smooth surface.
9. hairbrush as claimed in claim 1 is characterized in that, this bristle radially extends from central axis along a plurality of directions towards the neighboring around this central axis.
10. hairbrush as claimed in claim 9 is characterized in that this bristle is clamped by stranded wire rod.
11. the method for a cleaning teeth, it comprises: hairbrush (a) is provided, and this hairbrush comprises the bristle by preparation of compositions, and said composition comprises the thermoplastic polymerization resin who is mixed with slip(ping)agent; And (b) this hairbrush is applied on one or more dental surfaces with cleaning teeth.
12. method as claimed in claim 11, it is characterized in that step (a) comprises from one group and comprises one or more steps as this thermoplastic polymerization resin of selection polymeric amide, polyester, polyolefine, fluoropolymer, urethane, polyvinyl chloride, polyvinylidene chloride and styrene polymer and the multipolymer.
13. method as claimed in claim 11 is characterized in that, step (a) comprises selects the step of polymeric amide as this thermoplastic polymerization resin.
14. method as claimed in claim 13 is characterized in that, this polymeric amide is nylon 6-12.
15. the described method of claim 11 is characterized in that, step (a) comprises from one group and comprises one or more steps as this slip(ping)agent of selection fluorinated olefin polymer, boron nitride, molybdenumdisulphide, graphite, soccerballene and the talcum powder.
16. method as claimed in claim 11 is characterized in that, step (a) comprises selects the step of tetrafluoroethylene as this slip(ping)agent.
17. method as claimed in claim 11, it is characterized in that, step (a) comprises the step of said composition that preparation comprises slip(ping)agent, is approximately 0.5 or be approximately 10 or still less but this slip(ping)agent accounts for the weight percent of gross weight that polymkeric substance adds the composition of slip(ping)agent more.
18. method as claimed in claim 11 is characterized in that, step (a) comprises provides the step of a kind of this bristle from a smooth surperficial extended hairbrush.
19. method as claimed in claim 11 is characterized in that, step (a) comprise provide a kind of bristle from central axis along a plurality of directions towards the step of extended hairbrush radially around the neighboring of this central axis.
20. method as claimed in claim 19 is characterized in that, this bristle is clamped by stranded wire rod.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US23730200P | 2000-10-02 | 2000-10-02 | |
| US60/237,302 | 2000-10-02 | ||
| US92649301A | 2001-09-25 | 2001-09-25 | |
| US09/926,493 | 2001-09-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1468072A true CN1468072A (en) | 2004-01-14 |
| CN1251631C CN1251631C (en) | 2006-04-19 |
Family
ID=26930537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB018167284A Expired - Fee Related CN1251631C (en) | 2000-10-02 | 2001-09-28 | Low friction toothbrush |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP1322199B1 (en) |
| JP (1) | JP4842499B2 (en) |
| KR (1) | KR100840437B1 (en) |
| CN (1) | CN1251631C (en) |
| CA (1) | CA2423081C (en) |
| DE (1) | DE60112774T2 (en) |
| WO (1) | WO2002028222A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103073834A (en) * | 2012-11-27 | 2013-05-01 | 常州大学 | Biodegradable synthetic material toothbrush |
| CN105175789A (en) * | 2015-09-18 | 2015-12-23 | 安徽创业机电设备有限公司 | High-softness bristles |
| CN105534010A (en) * | 2015-12-22 | 2016-05-04 | 郑州人造金刚石及制品工程技术研究中心有限公司 | Tooth brush monofilaments containing nano carbon crystals and manufacturing method of tooth brush monofilaments |
| WO2017143942A1 (en) * | 2016-02-26 | 2017-08-31 | 冯涛 | Portable vehicle washing device |
| CN111530787A (en) * | 2020-04-30 | 2020-08-14 | 张珈铭 | Automatic change mould scavenging machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101035449A (en) * | 2004-10-20 | 2007-09-12 | 宝洁公司 | Toothbrushes |
| WO2006101286A1 (en) * | 2005-03-25 | 2006-09-28 | Young-Jun Kwon | Method of tapering bristles for toothbrushes and toothbrush having bristles manufactured using the method |
| CN105495987A (en) | 2011-01-04 | 2016-04-20 | 特里萨控股股份公司 | Toothbrush with injection-moulded bristles, and method and apparatus for producing the same |
| KR101383667B1 (en) * | 2012-05-18 | 2014-04-09 | 비비씨 주식회사 | Dual structure filamaent and toothbrush using thereof |
| EP3729997B1 (en) | 2012-07-02 | 2022-08-24 | Trisa Holding AG | Method for producing an interdental brush |
| EP2918191B1 (en) | 2014-03-11 | 2024-01-24 | The Procter & Gamble Company | Head for an oral care implement |
| US10098447B2 (en) * | 2014-07-15 | 2018-10-16 | The Procter & Gamble Company | Oral-care implement having color-communicative element |
| EP3251548B1 (en) | 2016-06-03 | 2024-02-14 | The Procter & Gamble Company | Filament for an oral care implement and oral care implement |
| EP3251551B1 (en) | 2016-06-03 | 2020-03-18 | The Procter and Gamble Company | Head for an oral care implement and oral care implement |
| JP7162006B2 (en) * | 2016-12-27 | 2022-10-27 | サビック グローバル テクノロジーズ ベスローテン フェンノートシャップ | Fibers containing fibrillated reinforcement |
| US10251470B1 (en) | 2017-10-10 | 2019-04-09 | The Procter & Gamble Company | Head for an oral care implement and oral care implement |
| US11219302B2 (en) | 2017-10-10 | 2022-01-11 | The Procter & Gamble Company | Head for an oral care implement and oral care implement |
| KR102199844B1 (en) * | 2019-01-14 | 2021-01-07 | 주식회사 메디미학 | Methoth for manufacturing antibacterial toothbrush bristle having shungite |
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| JPH0667329B2 (en) * | 1985-10-04 | 1994-08-31 | 東レ・モノフィラメント株式会社 | Monofilament for brush |
| FR2685925B1 (en) * | 1992-01-08 | 1994-04-08 | Oreal | FIBER FOR APPLICATOR, ESPECIALLY COSMETIC, AND APPLICATOR THEREOF. |
| US5462798A (en) | 1992-01-08 | 1995-10-31 | L'oreal | Brush for applying a liquid product as a layer on a substrate |
| FR2687055B1 (en) * | 1992-02-11 | 1994-04-29 | Oreal | BRUSH FOR APPLYING NAIL VARNISH OR THE LIKE. |
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| DE9312577U1 (en) * | 1993-08-21 | 1993-11-18 | Georg Karl Geka-Brush Gmbh, 91572 Bechhofen | Brushes, especially interdental brushes |
| US6058541A (en) * | 1996-07-03 | 2000-05-09 | Gillette Canada Inc. | Crimped bristle toothbrush |
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| WO1998034514A1 (en) * | 1997-02-07 | 1998-08-13 | Smithkline Beecham Consumer Healthcare Gmbh | Toothbrush bristles |
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| US6269514B1 (en) * | 1998-06-05 | 2001-08-07 | Du Pont | Monofilament bristle assemblies and methods of making brushes using same |
| US6296934B1 (en) * | 1999-03-12 | 2001-10-02 | E.I. Du Pont De Nemours And Company | Glitter containing filaments for use in brushes |
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2001
- 2001-09-28 CN CNB018167284A patent/CN1251631C/en not_active Expired - Fee Related
- 2001-09-28 EP EP01977323A patent/EP1322199B1/en not_active Expired - Lifetime
- 2001-09-28 DE DE60112774T patent/DE60112774T2/en not_active Expired - Lifetime
- 2001-09-28 KR KR1020037004630A patent/KR100840437B1/en not_active IP Right Cessation
- 2001-09-28 CA CA002423081A patent/CA2423081C/en not_active Expired - Fee Related
- 2001-09-28 JP JP2002531857A patent/JP4842499B2/en not_active Expired - Lifetime
- 2001-09-28 WO PCT/US2001/030688 patent/WO2002028222A1/en active IP Right Grant
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103073834A (en) * | 2012-11-27 | 2013-05-01 | 常州大学 | Biodegradable synthetic material toothbrush |
| CN105175789A (en) * | 2015-09-18 | 2015-12-23 | 安徽创业机电设备有限公司 | High-softness bristles |
| CN105534010A (en) * | 2015-12-22 | 2016-05-04 | 郑州人造金刚石及制品工程技术研究中心有限公司 | Tooth brush monofilaments containing nano carbon crystals and manufacturing method of tooth brush monofilaments |
| WO2017143942A1 (en) * | 2016-02-26 | 2017-08-31 | 冯涛 | Portable vehicle washing device |
| CN111530787A (en) * | 2020-04-30 | 2020-08-14 | 张珈铭 | Automatic change mould scavenging machine |
| CN111530787B (en) * | 2020-04-30 | 2022-07-01 | 深圳市常丰激光刀模有限公司 | Automatic change mould scavenging machine |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20030040512A (en) | 2003-05-22 |
| DE60112774T2 (en) | 2006-06-08 |
| JP4842499B2 (en) | 2011-12-21 |
| DE60112774D1 (en) | 2005-09-22 |
| WO2002028222A1 (en) | 2002-04-11 |
| KR100840437B1 (en) | 2008-06-20 |
| CA2423081A1 (en) | 2002-04-11 |
| EP1322199B1 (en) | 2005-08-17 |
| JP2004515268A (en) | 2004-05-27 |
| CN1251631C (en) | 2006-04-19 |
| EP1322199A1 (en) | 2003-07-02 |
| CA2423081C (en) | 2009-12-15 |
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