CN101999798B

CN101999798B - Method for producing brushes, in particular toothbrushes

Info

Publication number: CN101999798B
Application number: CN201010269036.1A
Authority: CN
Inventors: B·G·布舍里
Original assignee: GB Boucherie NV
Current assignee: GB Boucherie NV
Priority date: 2009-08-31
Filing date: 2010-08-30
Publication date: 2015-02-18
Anticipated expiration: 2030-08-30
Also published as: DE102009039514A1; CN101999798A; EP2298122A3; EP2298122B1; EP2298122A2

Abstract

The invention provides a method for producing brushes, in particular toothbrushes, In the first manufacturing step, one or more soft elastic elements and a carrier plate with holes for fiber bundles are formed in a double-component pressure injection mold. In the second manufacturing step, the soft elastic elements and the carrier plate with holes are placed into a bristle planting mold and the in the bristle planting mold, the fiber bundles are sent into the holes and fixed on the carrier plate. In the third manufacturing step, the soft elastic elements and the carrier plate with fixed fiber bundles are sent into the pressure injection mold and in the pressure injection mold, the brush body or a part of the brush body is molded at the carrier plate or local part of the carrier plate and the brush body are pressed and encapsulated together.

Description

For the manufacture of the method for brush especially toothbrush

Technical field

The present invention relates to the method for the manufacture of brush especially toothbrush.

Background technology

Past, bristle tuft or tow fixedly realizing by noose or metal anchoring sheet on brush body.Without in noose or the good method of anchoring sheet, tow is so fixed on brush holder plate, and its stiff end to be inserted in the hole of brush holder plate and to be lived by melting welding overleaf.Utilize this " without anchor formula " method, tow can be processed according to almost any shape of cross section.People also often wish, except common bristle and tow, are also incorporated into by cleaning element (cleaning element be such as made up of soft elastic material, pin, thin rod, small pieces etc.) in hair brush area.For this reason, brush holder plate is equipped with multiple additional hole or breach, in additional hole or breach, utilizes pressure injection technology to inject soft elastic material.To the structure of brush and Functional Requirement higher, the manufacture more complex and expensive of brush.

Summary of the invention

Utilize the inventive method as described in following claims, inject the advantage of manufacturing technology and united two into one without the advantage of the technique for fixing of noose in other words without anchor, complicated brush construction also reasonably can be manufactured.

Accompanying drawing explanation

Obtain other features and advantages of the present invention see accompanying drawing to the explanation of multiple embodiment from following, accompanying drawing is depicted as:

Fig. 1 a, Fig. 1 b and Fig. 1 c represent multiple sequential step of the manufacture method in toothbrush first embodiment with top view;

Fig. 2 a, Fig. 2 b and Fig. 2 c are with the identical manufacturing step of perspective representation;

Fig. 3 a, Fig. 3 b and Fig. 3 c represent multiple sequential step of the manufacture method in toothbrush second embodiment with top view;

Fig. 4 a, Fig. 4 b and Fig. 4 c are with the identical manufacturing step of perspective representation;

Fig. 5 to Fig. 9 represents the multiple sequential step in the improvement project of the manufacture method shown in Fig. 1 and Fig. 2.

Detailed description of the invention

Three manufacturing steps according to brush of the present invention (be toothbrush at this) manufacture method have been shown in Fig. 1 a to Fig. 1 c.Fig. 1 a is the top view of the brush holder plate 10 be made up of relatively hard plastics, and this brush holder plate corresponds to head toothbrushes ground and has overall oval shape.Brush holder plate is formed by elastomeric material integratedly with pin-shaped soft flexible member 12 and is formed with one group of tow hole 14 in bi-component pressure injection mould, and the arrangement in this tow hole corresponds to desired bristle figure.Fig. 2 a is corresponding perspective view.

In the second manufacturing step such as shown in Fig. 1 b and Fig. 2 b, brush holder plate 10 is admitted to together with soft flexible member 12 formed thereon plants a mao mould without anchor formula.Planting in mao mould, tow 16 is inserted into tow hole 14 and is fixed on brush holder plate 10, and its way is, the tow end be pushed through of tow 16 is lived by melting welding by heating in brush holder back.

In the 3rd manufacturing step such as shown in Fig. 1 c and Fig. 2 c, the brush holder plate 10 comprising soft flexible member 12 and fixing tow 16 is admitted to the die cavity of pressure injection mould, in this die cavity, the part of brush body 18 or brush body by pressure injection on brush holder plate 10.Brush body 18 can the outward flange of coated brush holder plate 10, thus together with the plastic material of brush holder plate and brush body is encapsulated in by local pressure injection.3rd manufacturing step can have been come by multicomponent pressure injection technology, and therefore, such as brush holder or brush holder support can be equipped with the decoration of liner, character string or functor.

In the toothbrush embodiment shown in Fig. 1 and Fig. 2, pin-shaped soft flexible member 12 is placed in the outer longitudinal edge of brush holder plate 10 according to the form of two groups four.

In the toothbrush embodiment shown in Fig. 3 and Fig. 4, on brush holder plate 20, replace the soft flexible member 22 of cross that pin like elements ground formation one is independent, the tow 26 that this soft flexible member is inserted into tow hole 24 surrounds.In other side, manufacturing step is equal to the step of Fig. 1 and Fig. 2, thus no longer repeats.

In Fig. 5 to Fig. 9, brush holder plate 110 is equipped with the outward flange 110a of rising, and with the through hole of the pin shaped element part 112 had as the embodiment of Fig. 1 and Fig. 2 for being made up of elastomeric material and the tow hole 114 run through for tow 116.As shown in Figure 5, the elastomeric material of element 112 forms coherent material strips 112a at the back side of brush holder plate 110, the stiff end of this material strips Connection Element 112.Fig. 6 also show the tow 116 added in tow hole 114, and the stiff end of tow is formed coherent material layer 116a by melting welding at the back side of brush holder plate 110 subsequently as illustrated in fig. 7.Subsequently as shown in Figure 8, material layer 120 is added into outside and is limited by the brush holder plate outward flange 110a raised and in volume that bottom side is limited by material layer 116a and material strips 112a.Material layer 120 has the shutoff function preventing plastification material from flowing out in manufacturing step subsequently, wherein in described manufacturing step subsequently, brush holder support 118 by pressure injection on brush holder plate 110, or together with brush holder plate is encapsulated in brush holder support material pressure injection.The injection pressure needed in this manufacturing step may cause plastification material roughly to pour into the free space remained between tow 116 and tow hole 114 when not utilizing material layer 120 shutoff, finally even flow out at brush holder plate outer surface.By controlling and limiting injection pressure, this undesirable phenomenon can be prevented, but will to stand strict technological parameter and abandon acquisition best product quality be the high injection pressure meeting expectation.Under high pressure injection moulding and the material layer 120 that can be made up of inessential material reliably prevents the injection material in tow hole from flowing out when the pressure injection of brush holder support, thus this manufacturing step can carry out to be adjusted to best injection pressure.

In the embodiment shown in Fig. 9, material layer 120 is encapsulated by the material pressure injection of brush holder support 118 completely, therefore hides in brush.In other (not shown) embodiment, one or more surface regions of material layer 120 are not covered by brush holder support and can see and perhaps can expose with contacting, its way is, such as material layer 120 have special color or have special moulding, or it by special material as elastomer is formed.

Claims

1. manufacture a method for brush, wherein:

A) there is the brush holder plate of the multiple hole for tow and at least one hole for soft flexible member or breach;

B) this soft flexible member by being formed through described hole or breach injection soft elastic material in the first pressure injection mould;

C) this tow is added in described multiple hole;

D) stiff end exposed by described multiple hole of this tow is fixed on this brush holder plate by melting welding;

E) this brush holder plate comprising this soft flexible member and described tow is added in the second pressure injection mould, in the second pressure injection mould, brush body at least partially by pressure injection on this brush holder plate.

2. the method for manufacture brush according to claim 1, it is characterized in that, described a), b) in step, comprise at least one soft flexible member described and for this brush holder plate in multiple holes of tow in bi-component pressure injection die for molding, described c), d) in step, comprising at least one soft flexible member described and being placed into for this brush holder plate in multiple holes of tow plants in mao mould without anchor formula, plant in mao mould at this without anchor formula, tow is admitted to described multiple hole and is fixed on this brush holder plate, in described e) step, this brush holder plate comprising at least one soft flexible member described and fixing tow is admitted to pressure injection mould, in this pressure injection mould, the part of brush body or brush body by pressure injection on this brush holder plate, or together with this brush holder plate portion ground is encapsulated in brush body pressure injection.

3. the method for manufacture brush according to claim 2, is characterized in that, this brush body is formed by various ingredients in multicomponent pressure injection mould.

4. the method for manufacture brush according to any one of claim 1 to 3, it is characterized in that, in step b) in, multiple adjacent soft flexible member is injected shaping by the corresponding hole of this brush holder plate or breach, forms coherent material strips at this brush holder plate on the surface of described multiple adjacent soft flexible member.

5. the method for manufacture brush according to any one of claim 1 to 3, it is characterized in that, in steps d) after and in step e) before, on the stiff end of the melting welding of this tow apply a material layer, this material layer is in step e) in form prevent plastification material from flowing out through the hole of described tow plugging mechanism.

6. the method for manufacture brush according to any one of claim 1 to 3, is characterized in that, described brush is toothbrush.

7. a brush, comprise the brush holder plate be made up of plastics, this brush holder plate fixes at least one soft flexible member by bi-component pressure injection and the stiff end be inserted in the hole of this brush holder plate of tow is fixed on by melting welding on this brush holder plate, also comprise by pressure injection to this brush holder plate or the passage point pressure injection brush body encapsulating this brush holder plate and formed, this brush holder plate has hole or breach, and wherein this soft flexible member is stretched out by this hole or breach.

8. brush according to claim 7, is characterized in that, this brush holder plate is formed that entirety multiple holes that are criss-cross, that be used to tow surround and for the breach of a criss-cross soft flexible member of entirety.

9. brush according to claim 7, is characterized in that, the soft flexible member of multiple pin shape is encased inside the hair brush area be made up of the multiple holes for described tow.

10. the brush according to any one of claim 7 to 9, it is characterized in that, multiple adjacent soft flexible member is stretched out by the corresponding hole of this brush holder plate or breach, and described multiple adjacent soft flexible member is interconnected by material strips on the surface back to described multiple adjacent soft flexible member of this brush holder plate.

11. brushes according to any one of claim 7 to 9, is characterized in that, the stiff end of the melting welding of described tow applies a material layer, and this material layer is imbedded in the material of this brush body at least partly.

12. brushes according to any one of claim 7 to 9, it is characterized in that, this brush holder plate has the outward flange of rising, and this outward flange stretches the superb silk end crossing melting welding.

13. brushes according to claim 11, is characterized in that, this material layer is tightly surrounded by the outward flange of the rising of this brush holder plate.

14. brushes according to any one of claim 7 to 9, it is characterized in that, described brush is toothbrush.

15. brushes according to claim 9, is characterized in that, the soft flexible member of multiple pin shape is encased inside the hair brush area be made up of the multiple holes for described tow at its outward flange.