CN102056508A - Method for producing interdental brush and interdental brush - Google Patents
Method for producing interdental brush and interdental brush Download PDFInfo
- Publication number
- CN102056508A CN102056508A CN2009801222482A CN200980122248A CN102056508A CN 102056508 A CN102056508 A CN 102056508A CN 2009801222482 A CN2009801222482 A CN 2009801222482A CN 200980122248 A CN200980122248 A CN 200980122248A CN 102056508 A CN102056508 A CN 102056508A
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- brush
- cog
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- mould
- base end
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- 229920005989 resin Polymers 0.000 claims abstract description 67
- 239000011347 resin Substances 0.000 claims abstract description 67
- 238000000034 method Methods 0.000 claims description 20
- 229920002725 thermoplastic elastomer Polymers 0.000 claims description 7
- 229920005992 thermoplastic resin Polymers 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000000465 moulding Methods 0.000 abstract description 11
- 238000005452 bending Methods 0.000 abstract description 7
- 230000003252 repetitive effect Effects 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 description 11
- 238000002844 melting Methods 0.000 description 11
- 230000008018 melting Effects 0.000 description 11
- 238000010408 sweeping Methods 0.000 description 11
- 238000005192 partition Methods 0.000 description 10
- 238000001816 cooling Methods 0.000 description 6
- 229920001971 elastomer Polymers 0.000 description 6
- 239000000806 elastomer Substances 0.000 description 6
- 238000007493 shaping process Methods 0.000 description 6
- 229920000178 Acrylic resin Polymers 0.000 description 4
- 239000004925 Acrylic resin Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 4
- 229920005990 polystyrene resin Polymers 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229920006124 polyolefin elastomer Polymers 0.000 description 3
- 229920000305 Nylon 6,10 Polymers 0.000 description 2
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 description 2
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 2
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 230000005764 inhibitory process Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
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- 229920001707 polybutylene terephthalate Polymers 0.000 description 2
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- 239000004431 polycarbonate resin Substances 0.000 description 2
- 229920006324 polyoxymethylene Polymers 0.000 description 2
- 150000003440 styrenes Chemical class 0.000 description 2
- DHKHKXVYLBGOIT-UHFFFAOYSA-N 1,1-Diethoxyethane Chemical compound CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 description 1
- FDSYTWVNUJTPMA-UHFFFAOYSA-N 2-[3,9-bis(carboxymethyl)-3,6,9,15-tetrazabicyclo[9.3.1]pentadeca-1(15),11,13-trien-6-yl]acetic acid Chemical compound C1N(CC(O)=O)CCN(CC(=O)O)CCN(CC(O)=O)CC2=CC=CC1=N2 FDSYTWVNUJTPMA-UHFFFAOYSA-N 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- KXDHJXZQYSOELW-UHFFFAOYSA-M Carbamate Chemical compound NC([O-])=O KXDHJXZQYSOELW-UHFFFAOYSA-M 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 229920001756 Polyvinyl chloride acetate Polymers 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 239000011354 acetal resin Substances 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 229920006026 co-polymeric resin Polymers 0.000 description 1
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- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920001230 polyarylate Polymers 0.000 description 1
- -1 polybutylene terephthalate Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
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- 229920006346 thermoplastic polyester elastomer Polymers 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46D—MANUFACTURE OF BRUSHES
- A46D5/00—Devices for preparing quills for use as carriers for bristles
-
- 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
-
- 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
-
- 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
-
- 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
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Brushes (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- General Health & Medical Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Epidemiology (AREA)
- Dentistry (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
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 manufacture method 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 by brush portion being fixed on the handle portion top, this brush portion is by 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 people to metal allergy, also there is the injured people of gums only to touch the situation that brush portion is just felt pain.In addition, the wire cost height of brush portion is planted also complexity of mao operation, and when the 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 do not use is proposed in brush portion.In addition, in the between cog brush that sell in market, have by 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 Unexamined Patent Application Publication 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 is difficult to make the people to feel the manufacture method and the between cog brush of between cog brush pain and highly productive when inserting between cog.
Be used to solve the means of problem
In order to achieve the above object, the invention of feature scheme 1 of the present invention is a kind of manufacture method of between cog brush, this between cog brush makes described brush portion and described handle portion be configured as one with the base end part of the brush portion that is made of the 1st resin the state in the handle portion that is made of the 2nd resin of being embedded in and forms, the manufacture method of this between cog brush is characterised in that to have: to constituting the operation of carrying out matched moulds, described the 1st resin is penetrated filling, thus the one-shot forming body of described brush portion formed in cavity with the 1st mould of the cavity of described brush portion corresponding shape and the 2nd mould; Make described the 2nd mould with respect to described the 1st mould die sinking, the base end part that makes described brush portion behind described the 2nd mold releasability, make and constitute the operation that in cavity, penetrates filling, thus the post forming body of the described handle portion of the base end part that is embedded with described brush portion is formed with respect to described the 1st mould matched moulds, with described the 2nd resin with the 3rd mould of the cavity of described handle portion corresponding shape; And, the operation that the two-color molded product that described brush portion and described handle portion is configured as the between cog brush that one forms carries out the demoulding from described the 1st mould and the 3rd mould.
Again, the invention of feature scheme 2 of the present invention is as the manufacture method of feature scheme 1 described between cog brush, it is characterized in that described the 1st resin is a thermoplastic elastomer (TPE), and described the 2nd resin is the thermoplastic resin that has thermal bonding with respect to described the 1st resin.
Again, the invention of feature scheme 3 of the present invention is the manufacture methods as feature scheme 1 or 2 described between cog brushes, it is characterized in that, on the base end part of described brush portion, be provided with the deposited assisted parts of enlarged-diameter, the 2nd resin by ejaculation filling in described cavity is melt bonded with described deposited assisted parts, and the base end part of described brush portion is embedded in the described handle portion.
Again, the invention of feature scheme 4 of the present invention is the manufacture methods as feature scheme 3 described between cog brushes, it is characterized in that, on described deposited assisted parts, be provided with extension part, by in described cavity, penetrating the 2nd resin of filling described extension part is pushed expansion, and the base end part of described brush portion is embedded in the described handle portion.
Again, the invention of feature scheme 5 of the present invention is as the manufacture method of feature scheme 4 described between cog brushes, it is characterized in that, makes the base end part of described brush portion from described the 2nd mold releasability by forcing drawing.
Again, the invention of feature 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 described brush portion and described handle portion be configured as one and forms, and this between cog brush is characterised in that
Be provided with the deposited assisted parts of enlarged-diameter on the base end part of described brush portion, this deposited assisted parts is embedded in the described handle portion with melt bonded state.
Again, the invention of feature scheme 7 of the present invention is as feature scheme 6 described between cog brushes, it is characterized in that, is provided with extension part on described deposited assisted parts, is urged at this extension part under the state of expansion, and the base end part of described brush portion is embedded in the described handle portion.
The effect of invention
As mentioned above, 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 the figure of the brush portion seen from the base end part side.
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
4 deposited assisted parts
5 extension parts
The specific embodiment
Below, for the manufacture method of having used between cog brush of the present invention and between cog brush, be described in detail with reference to accompanying drawing.
In addition, in order to should be readily appreciated that feature, the drawing of Shi Yonging has for convenience and characteristic is enlarged the situation of expression in the following description, the size of each inscape than wait be not limited to identical with reality.
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 of the 1st resin and the handle portion 3 that is made 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 and handle portion 3 to be configured as one to form.
Specifically, can list about employed the 1st resin on 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 brush portion 2 alternating bendings also be difficult to fracture and to be difficult to make the people to feel pain when inserting between cog, the 1st resin adopts the resin the best about hardness 15～75 degree (JIS-A).
In addition, in the 2c of sweeping portion, though can at random change for the configuration of projection 2d and number etc., yet when the 1st mould 11 described later separates, except around the 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 in the top ends side is about 0.1～1.0mm, be scope about 1.0～6.0mm in the base end part 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, deposited assisted parts 4 and axle core 2b are set to one.This deposited assisted parts 4 is parts that the thickest portion diameter than axle core 2b more enlarges, and in addition, is provided with for example extension part shown in Fig. 1 C 5 on this deposited 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, deposited assisted parts 4 is embedded in the handle portion 3 with melt bonded state.
About such handle portion 3 employed the 2nd resins, the thermoplastic resin the best that has thermal bonding with respect to the 1st resin, also can list: 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), poly-ammonia ethyl ester, give birth to decomposability resin etc., in addition, also can from these, adopt separately or will mix 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 easily 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, and rigidity can 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 extends from the base end part side of each handle portion 3 is connected with flow path portion 7 under the many states that are arranged in parallel.Thus, between cog brush 1 can use from wherein cut off by gate part 6 one by one.
Then, the manufacturing process for above-mentioned between cog brush 1 describes.
In addition, have via gate part 6 and will brush 1 structure that is connected with flow path portion 7 between many rooted teeth, in the following description, 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.
Brushed 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 of above-mentioned the 1st resin.
Specifically, the boxlike mould that preparation is made 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 of the top ends side shaping that makes above-mentioned brush portion 2, and the 2nd mould 12 constitutes the cavity of the base end part 2a side shaping that makes above-mentioned brush portion 2.In addition, in order to form extension part 5 on the base end part of the brush portion of formed thereby, be provided with partition wall 12a, 12b on the 2nd mould 12, 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 be divided into two-part style up and down when the top ends side die sinking of above-mentioned brush portion 2.
Jet forming machine has omitted diagram; it has: be fixedly supported on the fixed part on the mould base portion and move the moving part that is supported on freely on a plurality of connecting rods; this connecting rod is arranged on the mould base portion; it is relative that these fixed parts and moving part are configured as, and can make moving part with respect to the fixed part contact separation by oil sector.In addition, be provided with ejecting mechanism in Jet forming machine, 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, by 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, by 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 by 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, be provided with deposited assisted parts 4 with the base end part 2a of above-mentioned brush portion 2, this deposited assisted parts 4 also will enlarge than the diameter of the thickest part of above-mentioned axle core 2b, close the direction strain to contracting by the extension part 5 that makes this deposited 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, as 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, with this 3rd mould 13 and the exchange of the 2nd mould 12, and fit with the 1st mould 11, be configured in boxlike mould in the cavity S2 thereby form base end part side with above-mentioned one-shot forming body.
And, after this boxlike mould is placed on the location division of a side relative with moving part of fixed part, by 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, by 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 by the 2nd resin that ejaculation is filled in this cavity S2.Again, deposited assisted parts 4 is embedded in the handle portion 3 with melt bonded state by the 2nd resin of heating and melting.
This situation, the 2nd resin circulation of heating and melting is entered between slit 5a, the 5b of extension part 5, base end part 2a with above-mentioned brush portion 2 physically is fixed in the above-mentioned handle portion 3 on one side, and in above-mentioned handle portion 3, therefore the base end part 2a of above-mentioned brush portion 2 adhesively can be connected with above-mentioned handle portion 3 by deposited base end part 2a heat fixation with above-mentioned brush portion 2.
Then, as shown in Figure 7, passed through the cool time of regulation after, make moving part carry out separating action by oil sector with respect to fixed part, afterwards, make brush portion 2 and handle portion 3 be configured as the two-color molded product of between cog brush 1 of one from the 1st mould 11 and 13 demouldings of the 3rd mould.
By through above operation, under the base end part 2a of the brush portion 2 that is made of the 1st resin is embedded in state in the handle portion 3 that is made of the 2nd resin, can obtain the between cog brush 1 that makes brush portion 2 and handle portion 3 be configured as one.Again, the moulding product of the many between cog brushes 1 that are connected with flow path portion 7 via gate part 6 after visual examination, packaged finishing.
So above-mentioned, in the manufacture method of having used between cog brush 1 of the present invention, the 1st mould 11 by 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, in cavity S2, penetrate filling by the 3rd mould 13 that will constitute cavity S2 with respect to the 1st mould 11 matched moulds and with the 2nd resin, 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 use situation wiry in brush portion 2, 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 by ejaculation is embedded in the handle portion 3 with the state that the cubic sheet 5d of extension part 5 is urged expansion.Again, deposited assisted parts 4 is embedded in the handle portion 3 with melt bonded state by 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 by 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 when brush portion 2 is inserted between cog, also be difficult to feel pain, 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 apply various changes in the scope that does not break away from purport of the present invention.In addition, in the following description,, omit explanation, and in drawing, mark same-sign for brushing 1 identical position with above-mentioned between cog.
For example, above-mentioned deposited assisted parts 4 is not limited to be provided with the structure of above-mentioned extension part 5, also can constitute setting deposited assisted parts 21 for example shown in Figure 7.Specifically, this deposited assisted parts 21 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.
The base end part 2a that is provided with the brush portion 2 of so deposited assisted parts 4 can use the 2nd mould 12c, the 12d of partition type up and down so for example shown in Figure 8, by the 1st resin once-forming.
And, because this situation also is embedded in deposited assisted parts 21 in the handle portion 3 with melt bonded state by the 2nd resin of heating and melting, therefore the base end part 2a of brush portion 2 securely can 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 these shapes can be made up for 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, by embodiment effect of the present invention is further expressed.In addition, the present invention is not limited to following examples, can suitably change in the scope that does not change its purport and implement.
In the present embodiment, use the manufacture method 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 manufacture method 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 beyond its top becomes conical projection of above-mentioned criss-cross projection 2d, 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 product 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 penetrate filling at 220 ℃ of following heating and meltings and from the 2nd die side in the cavity that the 1st and the 2nd mould is constituted.Then, after 5 seconds cooling (24 ℃ of mold temperatures), make the 2nd mould, make the base end part of brush portion of formed thereby from the 2nd mold releasability by forcing drawing 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 cooling off (25 ℃ of mold temperatures) in 20 seconds, make the base end part of brush portion be embedded in the two-color molded product of the between cog brush that forms in the handle portion from the 1st and the 3rd mold releasability.Thus, obtain the moulding product that 10 between cog that are connected with flow path portion via gate part are brushed.
(embodiment 2)
In embodiment 2, use the manufacture method 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 beyond being shaped as of above-mentioned projection 2d look rounded projection from the axis direction of axle core 2b, has with above-mentioned between cog shown in Figure 7 and brushes 1 identical shape.In addition, this between cog brush is 10 moulding product 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, on the spherical deposited assisted parts that is formed on the base end part of 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 cooling off (25 ℃ of mold temperatures) in 20 seconds, make the base end part of brush portion be embedded in the two-color molded product of the between cog brush that forms in the handle portion from the 1st and the 3rd mold releasability.Thus, obtain the moulding product 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 ", " tooth dirt removing true feeling ", " folding strength ", " metal allergy " 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 " 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 interdental brush wiry in the brush portion, even in use alternating bending also is difficult to fracture, and when inserting between cog, be difficult to make the people to feel pain, and interdental 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 manufacture method of between cog brush, this between cog brush makes described brush portion and described handle portion be configured as one with the base end part of the brush portion that is made of the 1st resin the state in the handle portion that is made of the 2nd resin of being embedded in and forms, the manufacture method of this between cog brush is characterised in that to have:
To constituting the operation of carrying out matched moulds, described the 1st resin is penetrated filling, thus the one-shot forming body of described brush portion formed in cavity with the 1st mould of the cavity of described brush portion corresponding shape and the 2nd mould;
Make described the 2nd mould with respect to described the 1st mould die sinking, the base end part that makes described brush portion behind described the 2nd mold releasability, make and constitute the operation that in cavity, penetrates filling, thus the post forming body of the described handle portion of the base end part that is embedded with described brush portion is formed with respect to described the 1st mould matched moulds, with described the 2nd resin with the 3rd mould of the cavity of described handle portion corresponding shape; And
The operation that the two-color molded product that described brush portion and described handle portion is configured as the between cog brush that one forms carries out the demoulding from described the 1st mould and the 3rd mould.
2. the manufacture method of between cog brush as claimed in claim 1 is characterized in that described the 1st resin is a thermoplastic elastomer (TPE), and described the 2nd resin is the thermoplastic resin that has thermal bonding with respect to described the 1st resin.
3. the manufacture method of between cog brush as claimed in claim 1 or 2, it is characterized in that, on the base end part of described brush portion, be provided with the deposited assisted parts of enlarged-diameter, the 2nd resin by ejaculation filling in described cavity is melt bonded with described deposited assisted parts, and the base end part of described brush portion is embedded in the described handle portion.
4. the manufacture method of between cog brush as claimed in claim 3, it is characterized in that, on described deposited assisted parts, be provided with extension part, by in described cavity, penetrating the 2nd resin of filling described extension part pushed expansion, and the base end part of described brush portion is embedded in the described handle portion.
5. the manufacture method of between cog brush as claimed in claim 4 is characterized in that, makes the base end part of described brush portion from described the 2nd mold releasability by forcing drawing.
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 described brush portion and described handle portion be configured as one and forms, and this between cog brush is characterised in that,
Be provided with the deposited assisted parts of enlarged-diameter on the base end part of described brush portion, this deposited assisted parts is embedded in the described handle portion with melt bonded state.
7. between cog brush as claimed in claim 6 is characterized in that, is provided with extension part on described deposited assisted parts, is urged at this extension part under the state of expansion, and the base end part of described brush portion is embedded in the described 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 true CN102056508A (en) | 2011-05-11 |
| CN102056508B CN102056508B (en) | 2012-12-12 |
Family
ID=41416673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200980122248.2A Expired - Fee Related 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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| CN106061431A (en) * | 2014-03-06 | 2016-10-26 | Tepe口腔卫生产品公司 | Interdental cleaner |
| 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 |
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| JPH09327334A (en) * | 1996-06-10 | 1997-12-22 | Nippon Shiken Kogyo Kk | Manufacture of interdental brush and device |
| JP2990353B1 (en) * | 1998-06-12 | 1999-12-13 | ナックス株式会社 | Interdental brush |
| BR9912442A (en) * | 1998-07-27 | 2001-04-17 | Chen & Chen Llc | Apparatus for cleaning tooth gaps and method of using it |
| JP3824041B2 (en) * | 1998-12-04 | 2006-09-20 | 株式会社三▲しゅう▼プレシジョン | Interdental cleaning tool and manufacturing method thereof |
| JP2004041260A (en) * | 2002-07-08 | 2004-02-12 | Atsushi Takahashi | Soft interdental cleaning implement |
| JP2004242781A (en) * | 2003-02-12 | 2004-09-02 | Taihei Kogyo Kk | Interdental toothbrush |
| JP3886050B2 (en) * | 2003-05-20 | 2007-02-28 | 株式会社 Ｕｆｃサプライ | Interdental brush and manufacturing method thereof |
| JP4581716B2 (en) * | 2005-02-02 | 2010-11-17 | サンスター株式会社 | Interdental cleaning tool and manufacturing method thereof |
| JP2009005740A (en) * | 2007-06-26 | 2009-01-15 | Lion Corp | Interdental brush |
| WO2009150964A1 (en) * | 2008-06-13 | 2009-12-17 | ライオン株式会社 | Method for producing interdental brush and interdental brush |
-
2009
- 2009-06-02 WO PCT/JP2009/060061 patent/WO2009150964A1/en active Application Filing
- 2009-06-02 CN CN200980122248.2A patent/CN102056508B/en not_active Expired - Fee Related
- 2009-06-02 JP JP2010516817A patent/JP4892631B2/en not_active Expired - Fee Related
- 2009-06-02 KR KR1020107027349A patent/KR101476879B1/en active IP Right Grant
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Also Published As
| Publication number | Publication date |
|---|---|
| CN102056508B (en) | 2012-12-12 |
| JP4892631B2 (en) | 2012-03-07 |
| KR20110028267A (en) | 2011-03-17 |
| JPWO2009150964A1 (en) | 2011-11-17 |
| KR101476879B1 (en) | 2014-12-26 |
| WO2009150964A1 (en) | 2009-12-17 |
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