CN102056508B - Method for producing interdental brush and interdental brush - Google Patents
Method for producing interdental brush and interdental brush Download PDFInfo
- Publication number
- CN102056508B CN102056508B CN200980122248.2A CN200980122248A CN102056508B CN 102056508 B CN102056508 B CN 102056508B CN 200980122248 A CN200980122248 A CN 200980122248A CN 102056508 B CN102056508 B CN 102056508B
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- Prior art keywords
- brush
- cog
- resin
- mould
- handle portion
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Classifications
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- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46D—MANUFACTURE OF BRUSHES
- A46D5/00—Devices for preparing quills for use as carriers for bristles
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- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B5/00—Brush bodies; Handles integral with brushware
- A46B5/02—Brush bodies; Handles integral with brushware specially shaped for holding by the hand
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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
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C15/00—Devices for cleaning between the teeth
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/16—Making multilayered or multicoloured articles
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/16—Making multilayered or multicoloured articles
- B29C45/1676—Making multilayered or multicoloured articles using a soft material and a rigid material, e.g. making articles with a sealing part
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/42—Brushes
- B29L2031/425—Toothbrush
Abstract
Provided is a high-productivity method for producing an interdental brush which is hard to bend even after repetitive bending during use and is not likely to give pain when inserted between teeth. Also provided is an interdental brush. The method for producing an interdental brush comprises a step for molding the primary molding of a brush portion (2) by mold clamping first and second dies constituting a cavity (S1) having a shape corresponding to the shape of the brush portion (2) and then by filling the cavity (S1) with injected first resin, a step for molding the secondary molding of a handle portion (3) where the proximal portion (2a) of the brush portion (2) is embedded by mold clamping with respect to the first die a third die constituting a cavity (S2) having a shape corresponding to the shape of the handle portion (3) and then filling the cavity (S2) with injected second resin after mold opening the second die with respect to the first die and mold releasing the proximal portion (2a) of the brush portion (2) from the second die and a step for mold releasing the two-color molding of an interdental brush, consisting of the brush portion (2) and the handle portion (3) molded integrally, from the first and third dies.
Description
Technical field
The present invention relates to a kind of manufacturing approach and between cog brush that in brush portion, does not use between cog brush wiry.
The application quotes its content based on advocating priority 2008-155415 number in the special hope of the patent of japanese publication on June 13rd, 2008 at this.
Background technology
The between cog brush uses mainly as auxiliary cleaning tool; This auxiliary cleaning tool is used for tooth and interdental slit (between adjacent teeth) with toothbrush cleaning difficulty are cleaned; Generally constitute through brush portion is fixed on the handle portion top, this brush portion is through forming between the wire that bristle is clamped in twisted.This between cog brush inserts tooth and interdental narrow and small slit with brush portion and moves forward and backward, thereby can be with bristle with the rejectings such as tooth dirt of piling up in the teeth space.
But, when employed wire has alternating bending in use in brush portion because of tired fracture easily or when inserting between cog the top thrust gums and make the people feel the situation of pain.
And, be not suitable for the people irritated to metal, also there is the injured people of gums only to touch the situation that brush portion just feels pain.In addition, the wire cost of brush portion is high, plants also complicacy of mao operation, and when brush portion base end part inserted the handle portion shaping, it is many that manufacturing process also becomes, and therefore the problem that production cost increases can occur.
Therefore, a kind of between cog brush wiry (for example with reference to patent documentation 1～4) that in brush portion, do not use is proposed.In addition, in the between cog brush that sell in market, have through acrylic resin to form handle portion, and covered the similar brush of forming by elastic resin (for example with reference to holt pharmacy system, trade name " soft between cog brush ") at the axle core segment that extends from handle portion.
Yet; In brush portion, do not use the situation of between cog brush wiry; If the axle core segment of brush portion attenuates, will rigidity not enough and pressure when covering similar brush, just can't bear ejection formation time the and make a core segment vibration, thereby the occurrence rate of defective products is uprised.
Patent documentation
Patent documentation 1: TOHKEMY 2000-120 communique
Patent documentation 2: japanese kokai publication hei 8-191845 communique
Patent documentation 3: TOHKEMY 2000-166945 communique
Patent documentation 4: Japanese special table the 2000-506514 communique
Summary of the invention
The present invention proposes in view of above-mentioned example in the past; Be a kind ofly in brush portion, not use between cog wiry brush, even its purpose is to provide a kind of alternating bending in use also to be difficult to fracture and when inserting between cog, is difficult to make the people to feel the manufacturing approach and the between cog brush of between cog brush pain and highly productive.
Be used to solve the means of problem
In order to achieve the above object; The invention of characteristic scheme 1 of the present invention is a kind of manufacturing approach of between cog brush; This between cog brush makes said brush portion and said handle portion be configured as one with the base end part of the brush portion that is made up of the 1st resin the state in the handle portion that is made up of the 2nd resin of being embedded in and forms; The manufacturing approach of this between cog brush is characterised in that to have: to constituting the operation of carrying out matched moulds, said the 1st resin is penetrated filling, thus the one-shot forming body of said brush portion formed in cavity with the 1st mould of the cavity of said brush portion corresponding shape and the 2nd mould; Make said the 2nd mould with respect to said the 1st mould die sinking, the base end part that makes said brush portion behind said the 2nd mold releasability, make and constitute the operation that in cavity, penetrates filling, thus the post forming body of the said handle portion of the base end part that is embedded with said brush portion is formed with respect to said the 1st mould matched moulds, with said the 2nd resin with the 3rd mould of the cavity of said handle portion corresponding shape; And, the operation that the two-color molded product that said brush portion and said handle portion is configured as the between cog brush that one forms carries out the demoulding from said the 1st mould and the 3rd mould.
Again, the invention of characteristic scheme 2 of the present invention is like the manufacturing approach of characteristic scheme 1 described between cog brush, it is characterized in that said the 1st resin is a thermoplastic elastomer (TPE), and said the 2nd resin is the thermoplastic resin that has thermal bonding with respect to said the 1st resin.
Again; The invention of characteristic scheme 3 of the present invention is the manufacturing approaches like characteristic scheme 1 or 2 described between cog brushes; It is characterized in that; On the base end part of said brush portion, be provided with the molten assisted parts that applies of enlarged-diameter, will said molten deposited assisted parts melt bonded through in said cavity, penetrating the 2nd resin of filling, and the base end part of said brush portion is embedded in the said handle portion.
Again; The invention of characteristic scheme 4 of the present invention is the manufacturing approaches like characteristic scheme 3 described between cog brushes; It is characterized in that; Be provided with extension part said molten applying on the assisted parts, said extension part pushed expansion, and the base end part of said brush portion is embedded in the said handle portion through in said cavity, penetrating the 2nd resin of filling.
Again, the invention of characteristic scheme 5 of the present invention is like the manufacturing approach of the described between cog brush of characteristic scheme 4, it is characterized in that, through forcing base end part that drawing makes said brush portion from said the 2nd mold releasability.
Again; The invention of characteristic scheme 6 of the present invention is a kind of between cog brushes; The base end part of the brush portion that this between cog brush is constituted with the 1st resin the state in the handle portion that the 2nd resin constituted of being embedded in makes said brush portion and said handle portion be configured as one and forms, and this between cog brush is characterised in that
On the base end part of said brush portion, be provided with the molten assisted parts that applies of enlarged-diameter, this molten assisted parts that applies is embedded in the said handle portion with melt bonded state.
Again, the invention of characteristic scheme 7 of the present invention is like the described between cog brush of characteristic scheme 6, it is characterized in that, is provided with extension part said molten applying on the assisted parts, is urged at this extension part under the state of expansion, and the base end part of said brush portion is embedded in the said handle portion.
The effect of invention
As stated, adopt the present invention,,, and when inserting between cog, also be difficult to feel pain even alternating bending in use also is difficult to fracture for not using between cog brush wiry in the brush portion, can yield rate good and qurer make this between cog brush.
Description of drawings
Figure 1A is the side view that an example of between cog brush of the present invention has been used in expression.
Figure 1B is an expression example having used between cog of the present invention brush, at the profile of each position of brush portion.
Fig. 1 C represented to use between cog of the present invention brush an example, be figure from the brush portion that base end part is looked sideways.
Fig. 2 is the vertical view that many between cog that are connected with flow path portion via gate part of expression are brushed.
Fig. 3 A represented to use between cog of the present invention brush manufacturing process, be the perspective side elevation view of the state of the 1st mould and the 2nd mould matched moulds.
Fig. 3 B represented to use between cog of the present invention brush manufacturing process, be the profile of extension part.
Fig. 4 represented to use between cog of the present invention brush manufacturing process, be the one-shot forming body that the is illustrated in brush portion perspective side elevation view of back the 2nd mould that be shaped with respect to the state of the 1st mold releasability.
Fig. 5 represented to use between cog of the present invention brush manufacturing process, be the perspective side figure of the state of the 1st mould and the 2nd mould matched moulds.
Fig. 6 represented to use between cog of the present invention brush manufacturing process, be the perspective side elevation view of the state after the post forming body of expression handle portion is shaped.
Fig. 7 is the side view that other example of between cog brush of the present invention has been used in expression.
Fig. 8 represent between cog shown in Figure 7 brush manufacturing process, be to be illustrated in the be shaped perspective side elevation view of state of relative the 1st mold releasability of back the 2nd mould of brush portion one-shot forming body.
Fig. 9 A carries out illustrative profile to the variation of the sweeping portion of brush portion.
Fig. 9 B carries out illustrative profile to the variation of the sweeping portion of brush portion.
Fig. 9 C carries out illustrative profile to the variation of the sweeping portion of brush portion.
Fig. 9 D carries out illustrative profile to the variation of the sweeping portion of brush portion.
Fig. 9 E carries out illustrative profile to the variation of the sweeping portion of brush portion.
Fig. 9 F carries out illustrative profile to the variation of the sweeping portion of brush portion.
Figure 10 A is the side view of the between cog brush of expression embodiment 1.
Figure 10 B is the between cog brush of expression embodiment 1, at the profile of each position of brush portion.
Figure 11 A is the side view of the between cog brush of expression embodiment 2.
Figure 11 B is the between cog brush of expression embodiment 2, at the profile of each position of brush portion.
Symbol description
1 between cog brush
2 brush portions
The 2a base end part
3 handle portion
The 4 molten assisted parts that apply
5 extension parts
The specific embodiment
Below, for the manufacturing approach of having used between cog brush of the present invention and between cog brush, at length explain with reference to accompanying drawing.
In addition, in order to should be readily appreciated that characteristic, the drawing that in following explanation, uses has for ease and characteristic is enlarged situation about representing, the size of each inscape is not limited to actual identical than waiting.
As being had by the between cog shown in Figure 1A～Fig. 1 C brush 1 of an example of the present invention: brush portion 2 that is made up of the 1st resin and the handle portion 3 that is made up of the 2nd resin, this between cog brush 1 are with the state in the handle portion 3 of being embedded in of the base end part 2a with brush portion 2 these brush portions 2 to be configured as one with handle portion 3 to form.
Specifically, can enumerate out about employed the 1st resin in brush portion 2: for example, olefin-based elastomer (TPO), vinyl chloride elastomer (TPVC), styrene series elastomer (SBC), carbamate based elastomers (TPU), polyester based elastomers (TPEE), polyamide-based elastomer thermoplastic elastomer resins such as (TPAE).In addition, when monochromatic moulding, also can use silicones.Again, even in order in use to make 2 alternating bendings of brush portion also be difficult to fracture and when inserting between cog, to be difficult to make the people to feel pain, the 1st resin adopts the resin about hardness 15～75 degree (JIS-A) best.
In addition; In the 2c of sweeping portion; Though can at random change for the configuration of projection 2d and number etc.; Yet from after the 1st mould 11 stated when separating, except around axle core 2b to the criss-cross projection 2d that four direction (angle between the projection=90 °) extends, it is also preferable to form around the axle core 2b projection 2d that extends to three directions (angle between the projection=120 °).
In addition, the length of axle core 2b is about 5～15mm, and the thickness of axle core 2b is to be the scope about 1.0～6.0mm about 0.1～1.0mm, in the base end part side in the top ends side.Comparatively ideally be that the length of projection 2d is, the base portion side thickness of projection 2d is, tip side thickness is about 0.1～0.5mm about 0.5～1.5mm about 0.2～1.0mm.
On the base end part 2a of brush portion 2, the molten assisted parts 4 that applies is set to one with axle core 2b.This is molten, and to apply assisted parts 4 are parts that the thickest portion diameter than axle core 2b more enlarges, and in addition, are provided with the for example extension part shown in Fig. 1 C 5 this molten applying on assisted parts 4.
And the base end part 2a that makes brush portion 2 is embedded in the handle portion 3 cubic sheet 5d is urged the state of expansion with respect to the central plate 5c that constitutes this extension part 5 under.In addition, the molten assisted parts 4 that applies is embedded in the handle portion 3 with melt bonded state.
About such handle portion 3 employed the 2nd resins; The thermoplastic resin that has thermal bonding with respect to the 1st resin is best; Also can enumerate out: for example, polystyrene resin (PS), acrylic resin (PP), pet resin (PET), acrylonitrile-butadiene-styrene copolymer resin (ABS), polyvinyl chloride-acetate resin (CP), polyarylate resin, saturated polyester resin (PCTA, PCTG), polycarbonate resin (PC), acrylonitrile polystyrene resin (AS), acetal resin (POM), polybutylene terephthalate (PBT), gather the ammonia ethyl ester, give birth to decomposability resin etc.; In addition, also can from these, adopt separately perhaps with mixing use more than 2 kinds.In addition, the 2nd resin uses resin (hard resin) the best about hardness 30～95 degree (JIS-A).Again, in order to obtain skidproof effect and to be prone to hold sense (be fit to sense), handle portion 3 also can be used above-mentioned thermoplastic elastomer resin, but when hardness less than 30 is spent, rigidity meeting deficiency and make the operability variation.
For example shown in Figure 2, more than such between cog brush 1 have the structure that the gate part 6 that under the many states that are arranged in parallel, extends from the base end part side of each handle portion 3 is connected with flow path portion 7.Thus, between cog brush 1 can cut off through gate part 6 from root ground wherein and use.
Then, the manufacturing process for above-mentioned between cog brush 1 describes.
In addition, have the structure that brush 1 between many rooted teeth is connected with flow path portion 7 via gate part 6, in following explanation, only be conceived to brush between the rooted tooth in the brush 1 between these many rooted teeth 1 and describe though above-mentioned between cog brush 1 creates in the lump.
Brush at 1 o'clock making above-mentioned between cog, as shown in Figure 3, at first, the Jet forming machine that utilizes exchange boxlike mould to use forms the one-shot forming body of the brush portion 2 that is made up of above-mentioned the 1st resin.
Specifically, prepare the boxlike mould that is made up of the 1st mould 11 that constitutes cavity S1 and the 2nd mould 12, this cavity S1 is corresponding to the shape of above-mentioned brush portion 2.This boxlike mould is front and back two partition types, and wherein, the 1st mould 11 constitutes the cavity that the top ends side that makes above-mentioned brush portion 2 is shaped, and the 2nd mould 12 constitutes the cavity that the base end part 2a side that makes above-mentioned brush portion 2 is shaped.In addition, in order on the base end part of the brush portion of formed thereby, to form extension part 5, on the 2nd mould 12, be provided with partition wall 12a, 12b, the shape of this partition wall 12a, 12b is corresponding to the above-mentioned the 1st and the 2nd slit 5a, 5b.In addition, the 1st mould 11 also can be made and when the top ends side die sinking of above-mentioned brush portion 2, be divided into two-part style up and down.
Jet forming machine has omitted diagram; It has: be fixedly supported on the fixed part on the mould base portion and move and be supported on the moving part on a plurality of connecting rods freely; This connecting rod is arranged on the mould base portion; These fixed parts and moving part are configured as relatively, and can make moving part with respect to the fixed part contact separation through oil sector.In addition, in Jet forming machine, be provided with ejecting mechanism, this ejecting mechanism utilizes high pressure that the resin material of heating and melting (plasticization) is penetrated filling in cavity.Again, ejecting mechanism can adopt hot flow path mode and cold runner mode wherein any one.But the situation of hot flow path mode is applied between each manufacturing one rooted tooth the occasion of brush 1.
And; Be placed on the location division of a side relative of fixed part when the boxlike mould after with moving part; Through oil sector moving part is carried out near action with respect to fixed part; Thereby make the 1st mould 11 and the 2nd mould 12 matched moulds between fixed part and moving part, and between the 1st mould 11 and the 2nd mould 12, constitute the cavity S1 with above-mentioned brush portion 2 correspondingly-shaped.And, through ejecting mechanism utilize high pressure with the 1st resin of heating and melting penetrate in this cavity of the 2nd mould 12 side direction S1 fill after, make the 1st resin cooling curing that is filled in the cavity S1.Thus, be configured as the one-shot forming body of above-mentioned brush portion 2.Again, the forming temperature of the 1st resin is 170～260 ℃, is best about 180～220 ℃.In addition, the chilling temperature of mould is 10～40 ℃, is best about 20～25 ℃.
Then, as shown in Figure 4, after the cool time through regulation, make moving part carry out separating action through oil sector with respect to fixed part after, make the 2nd mould 12 with respect to 11 die sinkings of the 1st mould.
At this moment; In the one-shot forming body that is shaped; On the part corresponding with the base end part 2a of above-mentioned brush portion 2, be provided with the molten assisted parts 4 that applies, this is molten to apply assisted parts 4 and also will enlarge than the diameter of the thickest part of above-mentioned axle core 2b, closes the direction strain to contracting through making this molten extension part 5 that applies assisted parts 4; This part is forced to pull out from the 2nd mould 12, thereby can carry out the demoulding.Thus, need not to make the 2nd mould 12 to form partition type up and down, and make the designs simplification of mould, therefore can realize the inhibition of initial investment and the raising of speed of production.
Then, like Fig. 5, shown in Figure 6, the post forming body of the handle portion 3 that above-mentioned the 2nd resin is constituted forms.Specifically, prepare to constitute the 3rd mould 13 of the partition type up and down of cavity S2, the shape of this cavity S2 is corresponding with above-mentioned handle portion 3.And, this 3rd mould 13 and the 2nd mould 12 are exchanged, and fit, thereby the base end part side that forms above-mentioned one-shot forming body is configured in the boxlike mould in the cavity S2 with the 1st mould 11.
And; After this boxlike mould is placed on the location division of a side relative with moving part of fixed part; Through oil sector moving part is carried out near action with respect to fixed part; Thereby make the 1st mould 11 and the 3rd mould 13 matched moulds between fixed part and moving part, and between the 1st mould 11 and the 3rd mould 13, constitute the cavity S2 with above-mentioned handle portion 3 corresponding shape.And, through ejecting mechanism utilize high pressure with the 2nd resin of heating and melting in this cavity S2, penetrate fill after, make the 2nd resin cooling curing that is filled in the cavity S2.Thus, be configured as the post forming body of the handle portion 3 of the base end part 2a that is embedded with above-mentioned brush portion 2.Again, the forming temperature of the 2nd resin is 170～260 ℃, is best about 180～220 ℃.Again, the chilling temperature of mould is 10～40 ℃, is best about 20～25 ℃.
Wherein, the base end part 2a that is configured in the above-mentioned brush portion 2 in the cavity S2 is embedded in the handle portion 3 with the state that the cubic sheet 5d of above-mentioned extension part 5 is urged expansion through the 2nd resin that ejaculation is filled in this cavity S2.Again, molten deposited assisted parts 4 is embedded in the handle portion 3 with melt bonded state through the 2nd resin of heating and melting.
This situation; The 2nd resin circulation of heating and melting is got between the slit 5a, 5b of extension part 5; On one side the base end part 2a with above-mentioned brush portion 2 physically is fixed in the above-mentioned handle portion 3; And apply base end part 2a heat fixation with above-mentioned brush portion 2 in above-mentioned handle portion 3 through molten, therefore can the base end part 2a of above-mentioned brush portion 2 be connected with above-mentioned handle portion 3 bondingly.
Then; As shown in Figure 7, passed through the cool time of regulation after, make moving part carry out separating action through oil sector with respect to fixed part; Afterwards, the between cog that makes brush portion 2 and handle portion 3 be configured as one is brushed 1 two-color molded product from the 1st mould 11 and 13 demouldings of the 3rd mould.
Through through above operation, be embedded under the state in the handle portion 3 that constitutes by the 2nd resin at the base end part 2a of the brush portion 2 that constitutes by the 1st resin, can obtain the between cog brush 1 that makes brush portion 2 and handle portion 3 be configured as one.Again, the moulding article of the many between cog brushes 1 that are connected with flow path portion 7 via gate part 6 after visual examination, the pack completion.
So above-mentioned; In the manufacturing approach of having used between cog brush 1 of the present invention; The 1st mould 11 through will constituting cavity S1 and the 2nd mould 12 matched moulds and the 1st resin penetrated filling in cavity S1 form the one-shot forming body of brush portion 2, and the shape of this cavity S1 is corresponding to brush portion 2.Further, make the 2nd mould 12, thereby the base end part 2a that makes brush portion 2 is from 12 demouldings of the 2nd mould with respect to 11 die sinkings of the 1st mould.Afterwards; The 3rd mould 13 through constituting cavity S2 penetrates filling with respect to the 1st mould 11 matched moulds and with the 2nd resin in cavity S2; Thereby the post forming body to the handle portion 3 of the base end part 2a that buried brush portion 2 underground forms, and the shape of this cavity S2 is corresponding to handle portion 3.
This situation is compared with in brush portion 2, using situation wiry, need not the base end part 2a of brush portion 2 is positioned with high dimension precision, can easily it be configured in the cavity S2.And, being configured in the base end part 2a of the brush portion 2 in the cavity S2, the 2nd resin that is filled in this cavity S2 through ejaculation is embedded in the handle portion 3 with the state that the cubic sheet 5d of extension part 5 is urged expansion.Again, molten deposited assisted parts 4 is embedded in the handle portion 3 with melt bonded state through the 2nd resin of heating and melting.Thus, compared with the situation of fixing metal silk in handle portion 3, the base end part 2a of brush portion 2 securely is fixed in the handle portion 3.
In addition, adopt the present invention, owing to through the 1st resin brush portion 2 is carried out shaping of the same colour, so the shaping of brush portion 2 is easier to, also can be with the bad inhibition of shaping of brush 2 lower.Again, can be corresponding owing to only exchange mould with the between cog of each kind brush, so kind switches and is easier to, Mould design and making are easier to, and the manufacturing cost of mould is also lower.
So above-mentioned; Adopt the present invention, brush 1 for such between cog wiry that in brush portion 2, do not use, even in use brush portion 2 also is difficult to fracture by alternating bending; And also be difficult to feel pain when inserting between cog in brush portion 2, and can yield rate good and qurer make this between cog brush 1.
In addition, the present invention is not limited in above-mentioned example, can in the scope that does not break away from purport of the present invention, apply various changes.In addition, in following explanation,, omit explanation, and in drawing, mark same-sign for brushing 1 identical position with above-mentioned between cog.
For example, the above-mentioned molten structure that assisted parts 4 is not limited to be provided with above-mentioned extension part 5 of applying also can constitute the setting molten assisted parts 21 that applies for example shown in Figure 7.Specifically, this molten assisted parts 21 that applies constitutes: make roughly spherical than the enlarged-diameter of the thickest portion of axle core 2b, and a plurality of slot part 21a are set around it.
Be provided with the 2nd mould 12c, 12d that so molten base end part 2a that applies the brush portion 2 of assisted parts 4 can use partition type up and down so for example shown in Figure 8, through the 1st resin once-forming.
And, since this situation also the 2nd resin through heating and melting will melt and apply assisted parts 21 and be embedded in the handle portion 3 with melt bonded state, therefore can the base end part 2a of brush portion 2 securely be fixed in the handle portion 3.
Again, the 2c of sweeping portion of above-mentioned brush portion 2 is not limited to the shape of above-mentioned criss-cross projection 2d, also can also can these shapes be made up for the for example different shape shown in Fig. 9 A～Fig. 9 F.
Again; The invention is not restricted to as one man brush portion 2 is installed in the between cog brush of the I font on the top of handle portion 3, also can be applied in during the between cog that becomes predetermined angular ground brush portion 2 to be installed in the L font on the top of handle portion 3 with respect to axis direction brushes with axis direction.
Embodiment
Below, through embodiment effect of the present invention is further shown clearly.In addition, the present invention is not limited to following examples, can in the scope that does not change its purport, suitably change and implement.
In the present embodiment, use the manufacturing approach of the invention described above, made the between cog brush of embodiment 1 and the between cog brush of embodiment 2 practically.
(embodiment 1)
In embodiment 1, use the manufacturing approach of the invention described above to make the between cog brush shown in Figure 10 A, Figure 10 B.Specifically, this between cog has brushed being shaped as towards its top of above-mentioned criss-cross projection 2d to be become beyond the conical projection, has with the between cog shown in above-mentioned Figure 1A～Fig. 1 C to brush 1 identical shape.In addition, this between cog brush is 10 moulding article that are connected with flow path portion via gate part, and the total length of between cog brush is 70mm, and the length of brush portion is 12mm, and the length of handle portion is 58mm, and the diameter of handle portion is 7mm.Again, the thickness of axle core is 0.2mm in the top ends side, is 4.0mm in the base end part side, and the length of projection is that the thickness of 0.5～1.5mm, projection is 0.2mm～1.0mm in base portion side, is 0.1～0.5mm in tip side.
And; When making this between cog brush; At first; Prepare the 1st and the 2nd mould of front and back two partition types of 10 of manufacturings, behind the 1st and the 2nd mould matched moulds, the Jet forming machine of use hot flow path formula makes the styrene series elastomer as the hardness 20 (JIS-A) of the 1st resin in the cavity that the 1st and the 2nd mould is constituted, penetrate filling at 220 ℃ of following heating and meltings and from the 2nd die side.Then, after 5 seconds cooling (24 ℃ of mold temperatures), make the 2nd mould, through forcing the base end part of brush portion that drawing makes formed thereby from the 2nd mold releasability with respect to the 1st mould die sinking.Again, the width that is formed on the slit of the extension part on the base end part of brush portion is that 0.2mm, the degree of depth are 3mm.Then; Prepare the 3rd mould of the partition type up and down of formation cavity; The shape of this cavity is corresponding with handle portion; In the cavity of this 3rd mould, disposed under the state of base end part of brush portion behind the 1st and the 3rd mould matched moulds, will (width * thickness=1.0mm * 0.5mm) penetrates in cavity and fills at 220 ℃ of following heating and meltings and from the side gate of the 3rd die side as the polystyrene resin of the 2nd resin.And after 20 seconds cooling (25 ℃ of mold temperatures), the two-color molded product of the between cog brush that the base end part of brush portion is embedded in form in the handle portion is from the 1st and the 3rd mold releasability.Thus, obtain the moulding article that 10 between cog that are connected with flow path portion via gate part are brushed.
(embodiment 2)
In embodiment 2, use the manufacturing approach of the invention described above to make the between cog brush shown in Figure 11 A, Figure 11 B.Specifically, this between cog has brushed being shaped as from the axis direction of axle core 2b of above-mentioned projection 2d looks rounded beyond the projection, has with above-mentioned between cog shown in Figure 7 to brush 1 identical shape.In addition, this between cog brush is 10 moulding article that are connected with flow path portion via gate part, and the total length of between cog brush is 70mm, and the length of brush portion is 12mm, and the length of handle portion is 58mm, and the diameter of handle portion is 7mm.Again, the thickness of axle core is 0.2mm in the top ends side, is 5.0mm in the base end part side, and the length of projection is that the thickness of 0.5～1.5mm, projection is 0.2mm～1.0mm in base portion side, is 0.1～0.5mm in tip side.
And; When making this between cog brush; At first, prepare the 1st and the 2nd mould of front and back two partition types of 10 of manufacturings, behind the 1st and the 2nd mould matched moulds; Use the Jet forming machine of cold runner formula, olefin-based elastomer as the hardness 40 (JIS-A) of the 1st resin is penetrated in the cavity that the 1st and the 2nd mould constitutes at 210 ℃ of following heating and meltings and from the 2nd die side fill.Then, after 5 seconds cooling (24 ℃ of mold temperatures), with respect to the 1st mould with the up and down die sinking of ceding territory in two fens of the 2nd mould, thereby the base end part of brush portion that makes formed thereby is from the 2nd mold releasability.In addition, spherical molten the applying on the assisted parts on the base end part that is formed on brush portion, be formed with the slot part of two wide 0.5mm, dark 1mm.Then; Prepare the 3rd mould of the partition type up and down of formation cavity; The shape of this cavity is corresponding with handle portion; In the cavity of this 3rd mould, disposed under the state of base end part of brush portion behind the 1st and the 3rd mould matched moulds, made as the acrylic resin of the 2nd resin and in cavity, penetrate filling at 200 ℃ of following heating and meltings and from the side gate (diameter 1.0mm) of the 3rd die side.Then, after 20 seconds cooling (25 ℃ of mold temperatures), the two-color molded product of the between cog brush that the base end part of brush portion is embedded in form in the handle portion is from the 1st and the 3rd mold releasability.Thus, obtain the moulding article that 10 between cog that are connected with flow path portion via gate part are brushed.
And; For the line between cog brush of the between cog of these embodiment 1,2 brush, comparative example 1 (axle core: wire, with hair: NYLON610), the static of comparative example 2 plant a mao between cog brush (axle core: nylon, with hair: NYLON610) and the TPE of comparative example 3 cover the between cog brush (axle core: acrylic resin, sweeping portion: olefin-based elastomer (hardness 60), carried out " for the soft property of tooth meat ", " between cog insertion property ", " the tooth dirt is removed true feeling ", " folding strength ", " metal is irritated " and these " overall merit ".Its evaluation result is as shown in table 1.
In addition, about " for the soft property of tooth meat ", " between cog insertion property " and " the tooth dirt is removed true feeling ", used a week and get by 10 people's panel, its sensory evaluation (absolute evaluation) 7 stages of branch carry out.About " folding strength ", use 15 times (3 times * 5 days) and get by 10 people's panel, investigate its average durability times.
[table 1]
As shown in table 1, to compare with the between cog brush of comparative example 1～3, the between cog brush of embodiment 1,2 is because any one evaluation has all obtained preferable result, and therefore " overall merit " has also obtained extraordinary result.
Utilize possibility on the industry
Adopt the present invention; For not using between cog brush wiry in the brush portion; Even alternating bending in use also is difficult to fracture; And when inserting between cog, be difficult to make the people to feel pain, and between cog brush that can yield rate is good and the qurer manufacturing is such, therefore the effective prevention for disease in mouth is useful.
Claims (7)
1. the manufacturing approach of between cog brush; This between cog brush makes said brush portion and said handle portion be configured as one with the base end part of the brush portion that is made up of the 1st resin the state in the handle portion that is made up of the 2nd resin of being embedded in and forms; The manufacturing approach of this between cog brush is characterised in that to have:
To constituting the operation of carrying out matched moulds, said the 1st resin is penetrated filling, thus the one-shot forming body of said brush portion formed in cavity with the 1st mould of the cavity of said brush portion corresponding shape and the 2nd mould;
Make said the 2nd mould with respect to said the 1st mould die sinking, the base end part that makes said brush portion behind said the 2nd mold releasability, make and constitute the operation that in cavity, penetrates filling, thus the post forming body of the said handle portion of the base end part that is embedded with said brush portion is formed with respect to said the 1st mould matched moulds, with said the 2nd resin with the 3rd mould of the cavity of said handle portion corresponding shape; And
The operation that the two-color molded product that said brush portion and said handle portion is configured as the between cog brush that one forms carries out the demoulding from said the 1st mould and the 3rd mould,
Said the 1st resin is a thermoplastic elastomer (TPE), and said the 2nd resin is the thermoplastic resin that has thermal bonding with respect to said the 1st resin.
2. the manufacturing approach of between cog brush as claimed in claim 1; It is characterized in that said thermoplastic elastomer (TPE) is olefin-based elastomer, vinyl chloride elastomer, styrene series elastomer, carbamate based elastomers, polyester based elastomers, polyamide-based elastomer or silicones.
3. according to claim 1 or claim 2 the manufacturing approach of between cog brush; It is characterized in that; On the base end part of said brush portion, be provided with the molten assisted parts that applies of enlarged-diameter; Will said molten deposited assisted parts melt bonded through in the cavity of said and handle portion corresponding shape, penetrating the 2nd resin of filling, and the base end part of said brush portion is embedded in the said handle portion.
4. the manufacturing approach of between cog brush as claimed in claim 3; It is characterized in that; Be provided with extension part said molten applying on the assisted parts; Through in the cavity of said and handle portion corresponding shape, penetrating the 2nd resin of filling said extension part is pushed expansion, and the base end part of said brush portion is embedded in the said handle portion.
5. the manufacturing approach of between cog as claimed in claim 4 brush is characterized in that, through forcing base end part that drawing makes said brush portion from said the 2nd mold releasability.
6. the base end part of the brush portion that between cog brush, this between cog brush are constituted with the 1st resin the state in the handle portion that the 2nd resin constituted of being embedded in makes said brush portion and said handle portion be configured as one and forms, and this between cog brush is characterised in that,
On the base end part of said brush portion, be provided with the molten assisted parts that applies of enlarged-diameter, this molten assisted parts that applies is embedded in the said handle portion with melt bonded state.
7. between cog as claimed in claim 6 brush is characterized in that, is provided with extension part said molten applying on the assisted parts, is urged at this extension part under the state of expansion, and the base end part of said brush portion is embedded in the said handle portion.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008-155415 | 2008-06-13 | ||
| JP2008155415 | 2008-06-13 | ||
| PCT/JP2009/060061 WO2009150964A1 (en) | 2008-06-13 | 2009-06-02 | Method for producing interdental brush and interdental brush |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102056508A CN102056508A (en) | 2011-05-11 |
| CN102056508B true CN102056508B (en) | 2012-12-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200980122248.2A Active CN102056508B (en) | 2008-06-13 | 2009-06-02 | Method for producing interdental brush and interdental brush |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP4892631B2 (en) |
| KR (1) | KR101476879B1 (en) |
| CN (1) | CN102056508B (en) |
| WO (1) | WO2009150964A1 (en) |
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| DE502007003776D1 (en) * | 2007-10-24 | 2010-06-24 | Trisa Holding Ag | Interdental tooth cleaning device |
| CN102056508B (en) * | 2008-06-13 | 2012-12-12 | 狮王株式会社 | Method for producing interdental brush and interdental brush |
| TWI595862B (en) * | 2012-05-24 | 2017-08-21 | 新時代舒意適Ｓａ協會 | Method for manufacturing an interdental cleaning tool and the interdental cleaning tool |
| KR101249697B1 (en) * | 2012-11-26 | 2013-04-05 | 하동문 | The method and the device for fabrcating transparent toothbrush handle and the toothbrush |
| TWI478698B (en) * | 2013-01-25 | 2015-04-01 | 德晃有限公司 | The shaping of plastic toothpicks with a brush |
| ITTO20130060U1 (en) * | 2013-04-11 | 2014-10-12 | Spada Forniture Di Spada Giuseppe | DENTAL CLEANING DEVICE. |
| US9339357B1 (en) * | 2014-02-07 | 2016-05-17 | Maxim Babiner | Multi-headed toothbrush |
| EP2829253B1 (en) * | 2014-03-06 | 2016-10-12 | Tepe Munhygienprodukter AB | Interdental cleaner |
| USD764104S1 (en) | 2014-10-27 | 2016-08-16 | Tepe Munhygienprodukter Ab | Interdental cleaner |
| USD764103S1 (en) | 2014-10-27 | 2016-08-16 | Tepe Munhygienprodukter Ab | Interdental cleaner |
| US10500774B2 (en) * | 2014-11-11 | 2019-12-10 | Sunstar Suisse S.A. | Method for manufacturing interdental cleaning device |
| CN107106273A (en) * | 2014-11-11 | 2017-08-29 | 太阳星光齿磨公司 | Teeth space burnisher |
| JP6082038B2 (en) * | 2015-01-16 | 2017-02-15 | 小林製薬株式会社 | Cleaning tool |
| JP6433065B2 (en) * | 2015-03-09 | 2018-12-05 | ライオン株式会社 | Interdental brush |
| KR20170137713A (en) * | 2015-04-16 | 2017-12-13 | 라이온 가부시키가이샤 | Interdental brush |
| KR101559466B1 (en) * | 2015-07-15 | 2015-10-12 | 김광섭 | Injection mold for interdental toothbrush manufacturing |
| JP6937693B2 (en) * | 2015-07-23 | 2021-09-22 | ライオン株式会社 | Interdental brush |
| JP6925776B2 (en) * | 2015-12-18 | 2021-08-25 | 小林製薬株式会社 | Intertooth cleaning tool |
| JP6576882B2 (en) * | 2016-05-30 | 2019-09-18 | 大平工業株式会社 | Interdental brush and interdental brush set |
| CN106108360A (en) * | 2016-08-09 | 2016-11-16 | 扬州华腾个人护理用品有限公司 | Interdental brush and manufacture method thereof |
| JP6763568B2 (en) * | 2016-08-17 | 2020-09-30 | ヤマトエスロン株式会社 | Interdental brush |
| IT201600127771A1 (en) * | 2016-12-16 | 2018-06-16 | Sapiselco Srl | MULTI-FUNCTION INTERDENTAL BRUSH |
| CN107053609B (en) * | 2017-02-23 | 2019-05-03 | 汕头市金昱塑胶有限公司 | A kind of band slot, which is brushed teeth, signs mold and its manufacturing method |
| JP6976831B2 (en) * | 2017-12-01 | 2021-12-08 | 小林製薬株式会社 | Manufacturing method of interdental cleaning tool |
| DE102018008963B4 (en) * | 2018-11-14 | 2021-03-18 | lnterbros GmbH | Interdental cleaner |
| KR102120262B1 (en) * | 2019-07-23 | 2020-06-08 | 김동리 | Interdental toothbrush manufacturing apparatus |
| IT202000015307A1 (en) * | 2020-06-25 | 2021-12-25 | Simone Picci | A DENTAL BRUSH WITH BRISTLES OF VARIABLE SIZE ALONG THE LONGITUDINAL LENGTH OF THE BRUSH |
| IT202000015301A1 (en) * | 2020-06-25 | 2021-12-25 | Simone Picci | A DENTAL BRUSH WITH A TRIANGULAR SHAPE OF THE BRISTLES |
| CN113977869A (en) * | 2021-10-28 | 2022-01-28 | 扬州美星口腔护理用品有限公司 | Glue injection mold of inter-tooth brush |
| CN115107215B (en) * | 2022-07-22 | 2024-04-16 | 彧寰科技江苏有限公司 | Injection molding process of high-strength interdental brush handle |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP4892631B2 (en) | 2012-03-07 |
| JPWO2009150964A1 (en) | 2011-11-17 |
| KR20110028267A (en) | 2011-03-17 |
| WO2009150964A1 (en) | 2009-12-17 |
| KR101476879B1 (en) | 2014-12-26 |
| CN102056508A (en) | 2011-05-11 |
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