CN1106818C

CN1106818C - Plastic bristle for toothbrushes

Info

Publication number: CN1106818C
Application number: CN97191752A
Authority: CN
Inventors: 阿尔弗雷德·朱特; 弗朗斯·菲舍尔
Original assignee: Colgate Palmolive Co
Current assignee: Colgate Palmolive Co
Priority date: 1996-01-19
Filing date: 1997-01-06
Publication date: 2003-04-30
Anticipated expiration: 2017-01-06
Also published as: ATE197882T1; DK0874566T3; TR199801379T2; EP0874566A1; MX9805448A; ES2152646T3; AU1137497A; CA2242739A1; BR9706994A; WO1997025902A1; EP0874566B1; HK1017594A1; CO4650169A1; DE59702723D1; CN1208330A; TW374701B; AU718125B2; PT874566E; GR3035523T3; CA2242739C

Abstract

The plastic bristle (5) proposed consists of a core (6) of parallel plastic filaments (7) connected to each other, plus a plastic sheath (8) surrounding the core (6). At the brushing end (5a) of each bristle (5), the filaments (7) protrude out of the sheath (8). This is achieved by dressing the bristles (5) at the brushing end (5a), the length of the sheath (8) being reduced at the same time by this mechanically operation.

Description

Plastic bristle for toothbrushes and toothbrush with this hair

Technical field

The relevant a kind of plastics hair of toothbrush and the toothbrush that this plastics hair of a kind of usefulness is made of being used for of the present invention.

Background technology

GB2137080A discloses a kind of single plastics hair that has mao core and center on the sheath of this mao core.The hair core that is made into single-piece is harder, and is surrounded fully by sheath.In use, sheath weares and teares gradually, thereby as seen a mao core is become.This known plastic hair is intended to indicate the degree of wear of hair.

Summary of the invention

The purpose of this invention is to provide a kind of plastics hair and have the toothbrush of this hair, this hair and the ordinary toothbrush hair of forming by more coarse monofilament usually mutually specific energy bring into play better, softr cleaning action.

For achieving the above object, press one aspect of the present invention, a kind of so plastic hair that is used for toothbrush is provided, it has: one a mao of core and a plastic sheath around this mao core, it is characterized in that: its thickness degree is 0.1～0.3mm, and above-mentioned hair core is that the plastics fibril of 0.01～0.08mm is formed by many diameters; And fibril stretches out in outside the sheath in the hair end.

For achieving the above object, press another aspect of the present invention, a kind of toothbrush with the invention described above bristles is provided, wherein the hair form that is gathered into pieces is inserted in the bristle holder and stretches out in outside the sheath at the free-ended fibril of hair.

Because the multi-rooted tooth bristle comprises many thin fibrils, so effect the making good use of than the plastics hair of forming by a monofilament of cleaning the teeth.

By allowing fibril stretch out in outside the sheath, can reach a kind of filamentary structure in the hair end, it can guarantee dental surface is carried out soft cleaning action, because fibril end porous advances among the trickleest line of rabbet joint of dental surface and the pit and enters space between tooth.And can avoid damaging gums.

If fibril is different with the bristles sheath from visually finding out, for example, can not only obtains a kind of special aesthetic effect so like this, and a kind of good vision indication also can be provided the user mode of tooth because of having different colors.Therefore, also just can easily determine the degree of bristles wearing and tearing.

The thickness degree of bristles is selected like this: they should have enough rigidity and stability in also should be enough the flexibility and should have desirable fineness.

The hair core of bristles preferably should be made up of at least 2 fibrils, preferably should be made up of 20～60 fibrils, can produce a kind of effective especially and soft especially effect that cleans the teeth like this.

Description of drawings

Embodiment is equipped with reference to the accompanying drawings according to the toothbrush of bristles of the present invention.Accompanying drawing is schematically purely, wherein:

Fig. 1 is the side view of a toothbrush,

Fig. 2 is the part of Fig. 1 dens in dente brush of drawing with the ratio scale bigger than Fig. 1,

Fig. 3 be a bristle passes zoomed-in view with and the partial sectional view on top,

Fig. 4 is the cutaway view along A-A line among Fig. 3,

Fig. 5 is the free-ended partial sectional view of a bristle passes in the process of brushing teeth.

The specific embodiment

Toothbrush 1 shown in Figure 1 has the bristles carrier 3 that one handle 2 and is attached thereto in the mode of knowing.In this bristles carrier 3, pieces 4 is housed.As shown in Figure 2, each pieces 4 is formed by many hairs 5.

The following structure that the multi-rooted tooth bristle is described according to Fig. 3 and 4.

Every bristle passes has one mao of core 6, and hair core 6 is made up of the many plastics fibrils 7 that preferably are parallel to each other.This mao core 6 is centered on by a

sheath

8, and 8 of sheaths are made up of a plastic substrate 9, and 7 of fibrils are imbedded wherein, and preferably take each cavity.Fibril 7 and matrix 9 can be by same plastics, preferably be made up of polyamide material.At the free end 5a place of bristles 5, fibril 7 stretches out sheath 8, as from seeing Fig. 3 and 5.The fibril end is stretched its reason in this wise: bristles 5 is processed through a suitable rounding operation at its free end 5a, so just sheath 8 is mechanically removed partial-length.But the fibril end is not ground off thus.

Hair core 6 is made up of at least two fibrils, preferably is made up of 20～60 fibrils 7.The thickness degree (diameter d) of fibril 7 is 0.01～0.08mm.The thickness degree of bristles 5 (diameter D) is 0.1～0.3mm, is preferably 0.15～0.25mm.

Sheath 8 and fibril 7 should be from visually differentiating mutually.This point can simple especially mode reach: fibril 7 has the color that is different from sheath 8.Adopt this measure can reach a kind of special aesthetic effect and indication to the toothbrush usage degree can be provided.Because sheath 8 and the fibril end 7a that stretches out thereof have different colors, therefore can recognize easily when bristles free end 5a is worn, that is the fibril end 7a when this stretches out are worn away.

Can easily find out the advantage that special structure form drew from Fig. 5 by bristles 5.The end 7a that stretches out in sheath 8 of thin fibril constitutes a filamentary structure, can invade thus among the trickleest line of rabbet joint and pit among the tooth 10 surperficial 10a, and can reach a kind of soft but highly effective cleaning action thus.Can also protect gums in addition.Bristles 5 has enough rigidity on the one hand, also has sufficient flexibility on the other hand, so just can obtain the desirable effect that cleans the teeth.

If between the fibril 7 of forming hair core 6 and hair core 6 and sheath 8 without any cavity, just all as if exterior materials that microorganism is such and particle can not be invaded into goes in the bristles 5.

Claims

1. the plastic hair that is used for toothbrush, it has: one a mao of core (6) and a plastic sheath around this mao core (6) (8), it is characterized in that: its thickness degree is 0.1～0.3mm, and above-mentioned hair core (6) is that the plastics fibril (7) of 0.01～0.08mm is formed by many diameters; And fibril (7) stretches out in outside the sheath (8) at hair end (5a).

2. hair as claimed in claim 1 is characterized in that: the thickness degree of hair is 0.15-0.25mm.

3. hair as claimed in claim 1, it is characterized in that: fibril (7) is embedded among the plastic substrate (9), and this plastic substrate (9) is also formed sheath (8).

4. hair as claimed in claim 1 or 2, it is characterized in that: fibril (7) is from visually distinguishing by same sheath (8).

5. hair as claimed in claim 4, it is characterized in that: fibril (7) is distinguished from vision by their different colors mutually with sheath (8).

6. as the described hair of one of claim 1～3, it is characterized in that: hair core (6) is made up of at least 2 fibrils (7).

7. hair as claimed in claim 6 is characterized in that: hair core (6) is made up of 20～60 fibrils (7).

8. as the described hair of one of claim 1～3, it is characterized in that: sheath (8) and fibril (7) are made up of polyamide material.

9. have the toothbrush as the described hair of one of claim 1～8, wherein hair (5) form that is gathered into pieces (4) is inserted in the bristle holder (3) and stretches out in outside the sheath (8) at the fibril (7) of the free end (5a) of hair (5).

10. toothbrush as claimed in claim 9 is characterized in that: fibril (7) is from visually being different from sheath (8).

11. toothbrush as claimed in claim 10 is characterized in that: fibril (7) visually is different from sheath (8) by having the another kind of color that is different from sheath (8).

12. as the described toothbrush of one of claim 9 to 11, it is characterized in that: bristles (5) is used a kind of rounding operation to process at its free end (5a).