EP2078472B1 - Stamps for pressing bundles of fibres - Google Patents
Stamps for pressing bundles of fibres Download PDFInfo
- Publication number
- EP2078472B1 EP2078472B1 EP20090075002 EP09075002A EP2078472B1 EP 2078472 B1 EP2078472 B1 EP 2078472B1 EP 20090075002 EP20090075002 EP 20090075002 EP 09075002 A EP09075002 A EP 09075002A EP 2078472 B1 EP2078472 B1 EP 2078472B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- stamp
- fibres
- bundles
- holder
- hot
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Not-in-force
Links
- 238000003825 pressing Methods 0.000 title claims description 18
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 20
- 238000004519 manufacturing process Methods 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 17
- 239000000835 fiber Substances 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 16
- 229910052799 carbon Inorganic materials 0.000 claims description 10
- 229910002804 graphite Inorganic materials 0.000 claims description 10
- 239000010439 graphite Substances 0.000 claims description 10
- 238000001746 injection moulding Methods 0.000 claims description 8
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 238000005485 electric heating Methods 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 239000004033 plastic Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- -1 polyethylene terephthalate Polymers 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 229920002994 synthetic fiber Polymers 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000012768 molten material Substances 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 229920000915 polyvinyl chloride Polymers 0.000 description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46D—MANUFACTURE OF BRUSHES
- A46D3/00—Preparing, i.e. Manufacturing brush bodies
- A46D3/04—Machines for inserting or fixing bristles in bodies
- A46D3/045—Machines for inserting or fixing bristles in bodies for fixing bristles by fusing or gluing to a body
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B3/00—Brushes characterised by the way in which the bristles are fixed or joined in or on the brush body or carrier
- A46B3/06—Brushes characterised by the way in which the bristles are fixed or joined in or on the brush body or carrier by welding together bristles made of metal wires or plastic materials
-
- 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
Definitions
- the present invention concerns stamps for pressing synthetic bundles of fibres on a holder, in particular for bundles of fibres of brushes.
- a brush is formed of a body to which a number of bundles of fibres are fixed
- the bundles of fibres are usually fixed to a holder which is partially or entirely part of the brush body, or in some cases it may be the brush body itself.
- the holder contains holes in a certain pattern, whereby the diameter of the holes depends on the thickness of the fibre bundles, whereby holes of different diameters may be provided.
- Bundles of fibres are hereby put in a holder by means of a device, and the holder is carried to what is called a fusion module via a revolving table in order to fasten the bundles of fibres by fusing the far ends of the bundles of fibres that protrude from the holder.
- This fusing module can use different techniques, such as ultrasonic welding of the bundles of fibres.
- Another, simpler technique consists of mechanically pressing the bundles of fibres in or on the holder by means of a heated stamp.
- the far ends of the bundles of fibres are locally fused. If the far ends are long enough, a molten film can even be created between the heated stamp and the holder as the far ends of different bundles of fibres melt together. Next, the stamp is withdrawn and the molten far ends start to cure.
- stamps are typically rather thin.
- the stamps are heated up to a temperature which is dependent of the melting temperature of the material out of which the bundles of fibres are made, for example up to a temperature of 300°C, by sending a big electric current through them for a short duration, after which the stamps quickly cool down again.
- This technique is described in EP 1,136,017 .
- a disadvantage of this technique is that, due to the local melting, molten material may stick to the stamp and not to the holder as was intended, when the latter is withdrawn after the pressing. Thus, the bundles of fibres cannot be fixed that well to the holder. This disadvantage is all the more important as the holders get larger, and at present it bars this technique for household brushes.
- the stamp can be covered with an anti-sticking layer, as was mentioned in EP 1,136,017 .
- Another disadvantage is that the surface of the fused fibres is not entirely flat, such that covering with a cover plate or any other further processing, for example filling with injection moulding material, may be desirable or necessary.
- a further disadvantage is that microscopically small holes and pores may still be present in the mass of the fused fibres, which may cause the injection moulding material to leak during any further processing.
- the present invention aims to remedy one or several of the above-mentioned or other disadvantages.
- the invention concerns a device for manufacturing brushes which consists of a positioning device on which is provided a holder, whereby a number of bundles of fibres are provided loosely in the holder, and a first stamp which is heated and with which the far ends of the bundles of fibres are pressed on, whereby it provides for a second stamp which is used for a final pressing and whose temperature is lower than that of the first stamp.
- An advantage of the pressing with a colder stamp, to which nothing sticks, is that the fibre mass which has been plasticized beforehand can be connected more efficiently to the holder. This is also the case when it is made of another material than fibres, which normally only occurs when the fibres and holders are made of one and the same or a similar synthetic material which is compatible.
- a further advantage is that, by pressing with the colder stamp, a smoother and more even surface of the solidified melt is obtained than if this was not the case.
- injection pressures that are less high. Consequently, there will be less leakage of the injection moulding material.
- Another advantage is that, by pressing with the second stamp, the fibre melt is compressed and is made more compact during the solidifying process. As a result, microscopically small holes and pores that might still be present in the melt are filled. This in turn results in a more homogenous fibre layer, so that there will be less leakage problems while injection moulding.
- the hot first stamp is a stamp whose contact surface is at least partly made of carbon.
- stamp with the aforesaid layer of carbon is that it can press the bundles of fibres on to a holder, after which the stamp can be withdrawn without any fibre bundle material sticking on the stamp.
- brushes can be manufactured in a more efficient and cheaper way with this stamp, whereby less energy is consumed and the stamps have a longer lifetime.
- the layer of carbon with which the stamp is provided is commonly more known as a layer of graphite.
- Graphite is a form of carbon element carbon and one of the softest materials.
- the crystalline structure is hexagonal. From an atomic point of view, it is formed of layers which can easily slide off one another. That is why it is also used as a dry lubricant.
- Figure 1 schematically represents the first stamp 1 according to the invention, which in this case is made of solid graphite.
- a layer of graphite with a certain thickness will be provided on the contact surface 2 of a stamp 1 which is part of a mechanical pressing device.
- graphite containing copper provides very good results.
- This composition which contains for example 20% of copper, is less brittle than pure graphite.
- said contact surface 2 is provided with an embossed pattern, but this is not necessarily so and, in most cases, a flat contact surface 2 is preferred.
- Figures 1 to 3 show that the first stamp 1 is close to a holder 3 in which has been provided an amount of fibre bundles 4 through the holder 3 and whereby the far ends 5 of the bundles of fibres 4 protrude on the side of the stamp 1.
- the bundles of fibres 4 are hereby kept in place by a positioning device 6 and a device with pens 7.
- the functioning of the first stamp 1 according to the invention is simple and as follows.
- Figure 1 shows that the stamp 1 is brought towards the holder 3 in a direction A in order to press the bundles of fibres 4 on the holder 3 with its contact surface 2, as shown in figure 2 .
- the stamp 1 is preferably heated, such that the far ends 5 of the bundles of fibres will locally fuse while the latter are being pressed on. Thus, the bundles of fibres 4 will be pressed onto the holder 3 in a more efficient way.
- the stamp 1 may for example be heated by means of electric heating elements which are not represented in the figures and which are provided in or under the stamp.
- the bundles of fibres 4 are formed for example of polyethylene terephthalate, polyvinyl chloride, polypropylene or nylon, and the bundles of fibres are either or not locally fused when at least their respective melting temperatures are reached.
- the first stamp 1 is withdrawn in a direction B and removed from the holder 3, as shown in figure 2 .
- Figure 3 also shows that, thanks to the embossed pattern on the contact surface 2, the bundles of fibres 4 can be pressed on in a cleaner way as they fuse locally in the cavities of the relief pattern.
- the far ends 5 of the fibres of individual bundles of fibres 4 are hereby fused. It is also clear that the embossed pattern may have different shapes, depending on the desired pattern for the pressed-on material.
- Figure 4 shows how the holder 3 with pressed-on bundles of fibres 4 can subsequently be covered with a cover plate 8, whereby the holder 3 may be part of a brush body or may be the brush body itself.
- the cover plate 8 may be a separate part which is connected to the holder 3 by means of mounting, welding, gluing or other techniques, as is described for example in EP 0,972,464 .
- the cover plate 8 is directly provided on the holder 3 by means of injection moulding, as described in EP 0,972,465 .
- Figures 5 to 9 included schematically represent the successive steps of a method in which the stamp according to the invention is used, followed by a final pressing with a second stamp at a lower temperature.
- Figure 5 shows how the first stamp 1 is brought to the holder 3 in a direction A so as to press the bundles of fibres 4 on the holder 3 with its contact surface 2, as shown in figure 6 .
- the first stamp 1 is preferably heated, such that the far ends 5 of the bundles of fibres are locally fused while the stamp is being pressed on. As a result, the bundles of fibres 4 are pressed on the holder 3 more efficiently.
- the stamp 1 will be withdrawn in a direction B and removed from the holder 3, as shown in figure 7 .
- a colder second stamp 16 is used for the final pressing, as represented in figures 7 to 9 .
- the device function according to this alternative embodiment is as follows.
- the fusion by means of the heated first stamp 1 is followed by a final pressing with a second cold stamp 16.
- a second cold stamp 16 for example made of a metal such as steel or copper, either or not cooled externally, and against which the fibre mass then cools down.
- a further advantage is that, by pressing with the second stamp 16, a smoother and more even surface of the solidified melt is obtained than if this was not the case.
- Another advantage is that, by pressing with the second stamp 16, the fibre melt is compressed and is made more compact during the solidifying process. As a result, microscopically small holes and pores that might still be present in the melt are filled. This in turn results in a more homogenous fibre layer, so that there will be less leakage problems while injection moulding.
- Figure 5 shows a top view of material that has been pressed onto holder 3 and figure 6 also shows the bundles of fibres 4 in perspective. A specific pattern is used thereby which concentrates the bundles of fibres 4 on the outer side of the holder 3.
- Figure 12 shows how the holder 3 of figure 11 is covered with a cover plate 8 containing a connecting opening 9 for a brush handle.
Description
- The present invention concerns stamps for pressing synthetic bundles of fibres on a holder, in particular for bundles of fibres of brushes.
- It is known that a brush is formed of a body to which a number of bundles of fibres are fixed The bundles of fibres are usually fixed to a holder which is partially or entirely part of the brush body, or in some cases it may be the brush body itself.
- To this end, the holder contains holes in a certain pattern, whereby the diameter of the holes depends on the thickness of the fibre bundles, whereby holes of different diameters may be provided.
- Whereas, in former days, brushes used bundles of fibres made of natural materials, it is common now that the fibres in the bundles of industrially manufactured brushes are made of synthetic material. Typical examples are polyethylene terephthalate, polyvinyl chloride, polypropylene or nylon.
- It is known to use fixing techniques in order to fix the bundles of fibres on the holder that make use of metal clamps or plates. According to more modern techniques, use is made of what are called anchorless techniques such as disclosed for example in
EP 0,972,465 . - Bundles of fibres are hereby put in a holder by means of a device, and the holder is carried to what is called a fusion module via a revolving table in order to fasten the bundles of fibres by fusing the far ends of the bundles of fibres that protrude from the holder.
- This fusing module can use different techniques, such as ultrasonic welding of the bundles of fibres. Another, simpler technique consists of mechanically pressing the bundles of fibres in or on the holder by means of a heated stamp.
- As a result, the far ends of the bundles of fibres are locally fused. If the far ends are long enough, a molten film can even be created between the heated stamp and the holder as the far ends of different bundles of fibres melt together. Next, the stamp is withdrawn and the molten far ends start to cure.
- These stamps are typically rather thin. The stamps are heated up to a temperature which is dependent of the melting temperature of the material out of which the bundles of fibres are made, for example up to a temperature of 300°C, by sending a big electric current through them for a short duration, after which the stamps quickly cool down again. This technique is described in
EP 1,136,017 . - A disadvantage of this technique, however, is that, due to the local melting, molten material may stick to the stamp and not to the holder as was intended, when the latter is withdrawn after the pressing. Thus, the bundles of fibres cannot be fixed that well to the holder. This disadvantage is all the more important as the holders get larger, and at present it bars this technique for household brushes.
- In order to avoid sticking of molten material to the stamp, the stamp can be covered with an anti-sticking layer, as was mentioned in
EP 1,136,017 . - An additional disadvantage is that the stamp must be regularly cleaned, which implies a loss of time and as a result of which the manufacturing process is slowed down. The fastest manner to clean the stamp often consists in briefly heating the stamp up to for example 600°C in order to scorch the material that sticks to it. However, this requires a strong electric current and hence a strong power consumption. In any case, it is clear that cleaning is time-consuming.
- Moreover, this technique its not beneficial to the lifetime of the stamp, and it will have to be regularly replaced, which renders this fixing technique very expensive in the end compared with fixing techniques without any contact such as convection air heating, ultrasonic welding and the like.
- Another disadvantage is that the surface of the fused fibres is not entirely flat, such that covering with a cover plate or any other further processing, for example filling with injection moulding material, may be desirable or necessary.
- A further disadvantage is that microscopically small holes and pores may still be present in the mass of the fused fibres, which may cause the injection moulding material to leak during any further processing.
- The present invention aims to remedy one or several of the above-mentioned or other disadvantages.
- To this end, the invention concerns a device for manufacturing brushes which consists of a positioning device on which is provided a holder, whereby a number of bundles of fibres are provided loosely in the holder, and a first stamp which is heated and with which the far ends of the bundles of fibres are pressed on, whereby it provides for a second stamp which is used for a final pressing and whose temperature is lower than that of the first stamp.
- An advantage of the pressing with a colder stamp, to which nothing sticks, is that the fibre mass which has been plasticized beforehand can be connected more efficiently to the holder. This is also the case when it is made of another material than fibres, which normally only occurs when the fibres and holders are made of one and the same or a similar synthetic material which is compatible.
- A further advantage is that, by pressing with the colder stamp, a smoother and more even surface of the solidified melt is obtained than if this was not the case. As a result, in case a plastic is injected over the molten and solidified fibres in order to complete the brush body, it is possible to use injection pressures that are less high. Consequently, there will be less leakage of the injection moulding material.
- Another advantage is that, by pressing with the second stamp, the fibre melt is compressed and is made more compact during the solidifying process. As a result, microscopically small holes and pores that might still be present in the melt are filled. This in turn results in a more homogenous fibre layer, so that there will be less leakage problems while injection moulding.
- The hot first stamp is a stamp whose contact surface is at least partly made of carbon.
- An advantage of the stamp with the aforesaid layer of carbon is that it can press the bundles of fibres on to a holder, after which the stamp can be withdrawn without any fibre bundle material sticking on the stamp.
- Thus, brushes can be manufactured in a more efficient and cheaper way with this stamp, whereby less energy is consumed and the stamps have a longer lifetime.
- The layer of carbon with which the stamp is provided is commonly more known as a layer of graphite.
- Graphite, as is known, is a form of carbon element carbon and one of the softest materials. The crystalline structure is hexagonal. From an atomic point of view, it is formed of layers which can easily slide off one another. That is why it is also used as a dry lubricant.
- Up to now, the industry did not regard graphite as an appropriate material to be used for the manufacturing of pressure stamps, as it was generally considered to be much too brittle and frangible.
- In order to better explain the characteristics of the invention, the following preferred embodiments are described by way of example only, without being limitative in any way, with reference to the accompanying drawings, in which:
-
figures 1 to 3 included schematically represent the first stamp according to the invention and a situation in which it is used; -
figure 4 schematically shows a cross section of a brush made according to the invention, whereby the solidly fused fibres are covered with a cover plate; -
figures 5-9 schematically represent the successive steps of a method in which the first stamp according to the invention is used, followed by a final pressing with a second stamp at a lower temperature; -
figures 10, 11, 12 show examples of brushes that can be manufactured with a first stamp according to the invention. -
Figure 1 schematically represents the first stamp 1 according to the invention, which in this case is made of solid graphite. In practice, a layer of graphite with a certain thickness will be provided on the contact surface 2 of a stamp 1 which is part of a mechanical pressing device. Research has proven that, instead of pure graphite, also graphite containing copper provides very good results. This composition, which contains for example 20% of copper, is less brittle than pure graphite. - In
figure 1 , said contact surface 2 is provided with an embossed pattern, but this is not necessarily so and, in most cases, a flat contact surface 2 is preferred. -
Figures 1 to 3 show that the first stamp 1 is close to aholder 3 in which has been provided an amount offibre bundles 4 through theholder 3 and whereby the far ends 5 of the bundles offibres 4 protrude on the side of the stamp 1. The bundles offibres 4 are hereby kept in place by apositioning device 6 and a device withpens 7. - The functioning of the first stamp 1 according to the invention is simple and as follows.
-
Figure 1 shows that the stamp 1 is brought towards theholder 3 in a direction A in order to press the bundles offibres 4 on theholder 3 with its contact surface 2, as shown infigure 2 . - The stamp 1 is preferably heated, such that the far ends 5 of the bundles of fibres will locally fuse while the latter are being pressed on. Thus, the bundles of
fibres 4 will be pressed onto theholder 3 in a more efficient way. - The stamp 1 may for example be heated by means of electric heating elements which are not represented in the figures and which are provided in or under the stamp.
- In a practical example, the bundles of
fibres 4 are formed for example of polyethylene terephthalate, polyvinyl chloride, polypropylene or nylon, and the bundles of fibres are either or not locally fused when at least their respective melting temperatures are reached. - When the bundles of
fibres 4 have been pressed on long enough, the first stamp 1 is withdrawn in a direction B and removed from theholder 3, as shown infigure 2 . -
Figure 3 also shows that, thanks to the embossed pattern on the contact surface 2, the bundles offibres 4 can be pressed on in a cleaner way as they fuse locally in the cavities of the relief pattern. - The far ends 5 of the fibres of individual bundles of
fibres 4 are hereby fused. It is also clear that the embossed pattern may have different shapes, depending on the desired pattern for the pressed-on material. - There may also be no embossed pattern 2 at all, such that the far ends 5 of the bundles of
fibres 4 can fuse so as to create a film layer over theholder 3 when the far ends 5 are sufficiently long. This may be advantageous in certain applications whereby for example asecond plastic component 7 is injected over the fused far ends 5 of the bundle offibres 4 in a following step of the manufacturing process, since, as a result, the injection is exposed to less resistance than in case the fused far ends are not being pressed on flat. -
Figure 4 shows how theholder 3 with pressed-on bundles offibres 4 can subsequently be covered with acover plate 8, whereby theholder 3 may be part of a brush body or may be the brush body itself. - The
cover plate 8 may be a separate part which is connected to theholder 3 by means of mounting, welding, gluing or other techniques, as is described for example inEP 0,972,464 . - According to an alternative embodiment, the
cover plate 8 is directly provided on theholder 3 by means of injection moulding, as described inEP 0,972,465 . -
Figures 5 to 9 included schematically represent the successive steps of a method in which the stamp according to the invention is used, followed by a final pressing with a second stamp at a lower temperature. -
Figure 5 shows how the first stamp 1 is brought to theholder 3 in a direction A so as to press the bundles offibres 4 on theholder 3 with its contact surface 2, as shown infigure 6 . - The first stamp 1 is preferably heated, such that the far ends 5 of the bundles of fibres are locally fused while the stamp is being pressed on. As a result, the bundles of
fibres 4 are pressed on theholder 3 more efficiently. - As soon as the bundles of
fibres 4 have been pressed on long enough, as represented infigure 6 , the stamp 1 will be withdrawn in a direction B and removed from theholder 3, as shown infigure 7 . - Next, a colder
second stamp 16 is used for the final pressing, as represented infigures 7 to 9 . - The device function according to this alternative embodiment is as follows.
- The fusion by means of the heated first stamp 1 is followed by a final pressing with a second
cold stamp 16. This implies that the heated stamp 1 is withdrawn from the fibre mass, which is still entirely or partly plastic and hot, in the direction B as described above, and that, instead of making this fibre mass cure in the open air thereafter, it is immediately put into contact with a second cold stamp, for example made of a metal such as steel or copper, either or not cooled externally, and against which the fibre mass then cools down. - Thus is obtained a very smooth surface at the molten and/or fused and solidified far ends of the fibres, as represented in
figure 9 . - This produces different advantages.
- First of all, by pressing with a cold second stamp, to which nothing sticks, the fibre mass which has been plasticized beforehand can be connected more efficiently to the
holder 3. This is also the case when it is made of another material than fibres, which normally only occurs when the fibres and holders are made of one and the same or a similar synthetic material which is compatible. It is assumed that this can be explained in that, due to the pressure of the coldsecond stamp 16 on the fibre mass and the underlying holder, said fibre mass penetrates partly in the bundle openings of the holder, or in that these openings and/or the holder itself can be deformed, which results in a mechanical anchoring between thefibre melt 5 and theholder 3. - A further advantage is that, by pressing with the
second stamp 16, a smoother and more even surface of the solidified melt is obtained than if this was not the case. - As a result, in case a plastic is injected over the molten and solidified fibres in order to complete the brush body, it is possible to use injection pressures that are less high. Consequently, there will be less leakage of the injection moulding material.
- Another advantage is that, by pressing with the
second stamp 16, the fibre melt is compressed and is made more compact during the solidifying process. As a result, microscopically small holes and pores that might still be present in the melt are filled. This in turn results in a more homogenous fibre layer, so that there will be less leakage problems while injection moulding. -
Figures 10 to 11 . included represent a somewhat more specific example. -
Figure 5 shows a top view of material that has been pressed ontoholder 3 andfigure 6 also shows the bundles offibres 4 in perspective. A specific pattern is used thereby which concentrates the bundles offibres 4 on the outer side of theholder 3. -
Figure 12 shows how theholder 3 offigure 11 is covered with acover plate 8 containing a connecting opening 9 for a brush handle.
Claims (14)
- Device for manufacturing brushes which consists of a positioning device (6) on which is provided a holder (3), whereby a number of bundles of fibres (4) are provided loosely in the holder (3), and a first stamp (1) which is heated and with which the far ends (5) of the bundles of fibres are pressed on, characterised in that it provides for a second stamp (16) which is used for a final pressing and whose temperature is lower than that of the first stamp (1).
- Device for manufacturing brushes according to claim 1, characterised in that the second stamp (16) is being cooled.
- Device for manufacturing brushes according to any one of claims 1 or 2, characterised in that the contact surface of the second stamp (16) is flat.
- Device for manufacturing brushes according to claim 1 whereby a holder .(3) is placed on a positioning device (6), and whereby a number of fibre bundles (4) are loosely provided in the holder (3), whereby the bundles of fibres (4) protrude from the holder (3) with one far end (5) and whereby the far ends (5) of the bundles of fibres are pressed on with a first stamp (1) whose contact surface (2) temperature is at least as high as the melting temperature of the material out of which the bundles of fibres (4) are made, characterised in that, immediately after the hot first stamp (1) has been used, a second colder stamp (16) is used for final pressing.
- Device for manufacturing brushes according to claim 1, characterised in that the hot first stamp (1) is a stamp whose contact surface (2) is at least partly made of carbon.
- Device for manufacturing brushes according to claim 1, characterised in that the hot first stamp (1) is a stamp whose contact surface (2) is at least partly made of carbon in the form of graphite.
- Device for manufacturing brushes according to claim 1, characterised in that the hot first stamp (1) is a stamp whose contact surface (2) is at least partly composed of copper and graphite.
- Device for manufacturing brushes according to claim 1, characterised in that the hot first stamp (1) is a stamp whose contact surface (2) is provided with an embossed pattern.
- Device for manufacturing brushes according to claim 1, characterised in that the hot first stamp (1) is flat on the contact surface (2).
- Device for manufacturing brushes according to claim 1, characterised in that the hot first stamp (1) is heated up to a temperature which is at least the melting temperature of the material out of which the bundles of fibres (4) are made.
- Device for manufacturing brushes according to claim 1, characterised in that the hot first stamp (1) is heated by means of one or several electric heating elements.
- Device for manufacturing brushes according to claim 1, characterised in that the hot first stamp (1) is made as a solid block of carbon.
- Device for manufacturing brushes according to claim 1, characterised in that the hot first stamp (1) is coated with carbon on the above-mentioned contact surface (2) of the stamp.
- Device for manufacturing brushes according to claim 13, characterised in that the hot first stamp is coated with carbon by means of an injection moulding technique.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE200800020A BE1017930A6 (en) | 2008-01-10 | 2008-01-10 | Stamp for fusing and locally pressing on bundles of fibers used in manufacturing brushes, is at least partially made of carbon on contact surface where stamp presses fiber bundles on holder |
BE200800178A BE1018061A6 (en) | 2008-01-10 | 2008-03-25 | STAMP FOR PRESSING FIBER BUNDLES. |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2078472A1 EP2078472A1 (en) | 2009-07-15 |
EP2078472B1 true EP2078472B1 (en) | 2010-02-24 |
Family
ID=40651528
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20090075002 Not-in-force EP2078472B1 (en) | 2008-01-10 | 2009-01-05 | Stamps for pressing bundles of fibres |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2078472B1 (en) |
DE (1) | DE602009000006D1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010025852A1 (en) * | 2010-07-02 | 2012-03-29 | Gb Boucherie Nv | Method and apparatus for making brushes |
DE102012005311A1 (en) | 2012-03-19 | 2013-09-19 | Zahoransky Ag | Apparatus for producing brushes or bristles, and brush or brushware |
US11497302B2 (en) | 2017-10-24 | 2022-11-15 | Koninklijke Philips N.V. | Brush head manufacturing method and device |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE1018439A3 (en) * | 2009-02-04 | 2010-11-09 | Gb Boucherie Nv | METHOD FOR PRODUCING ANCHORLESS BRUSHES, MORE CERTAIN TOOTHBRUSHES. |
JP2012000148A (en) * | 2010-06-14 | 2012-01-05 | Panasonic Electric Works Co Ltd | Brush body and toothbrush including the same |
EP2674061B1 (en) * | 2012-06-12 | 2017-07-19 | Braun GmbH | Method and tool for producing a brush head |
CN104363791B (en) * | 2012-06-12 | 2016-09-14 | 博朗有限公司 | Brush and for preparing the Method and kit for of described brush |
WO2014092674A1 (en) | 2012-12-10 | 2014-06-19 | Colgate-Palmolive Company | Oral care implement |
BE1023148B1 (en) * | 2015-07-13 | 2016-12-01 | Bart Gerard Boucherie | Verfahren und Vorrichtung zum Restoring a Bürste |
DE102016107759A1 (en) * | 2015-07-13 | 2017-01-19 | Gb Boucherie Nv | Method and device for making a brush |
BE1023625B1 (en) * | 2016-01-12 | 2017-05-19 | Bart Gerard Boucherie | Method and device for making a brush |
CN109414110B (en) * | 2016-04-26 | 2021-01-29 | Gb布舍里股份有限公司 | Method and apparatus for manufacturing brushes |
US11723453B2 (en) * | 2017-12-12 | 2023-08-15 | Koninklijke Philips N.V. | Brush head assembly and methods of manufacture |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2200491T3 (en) | 1998-07-14 | 2004-03-01 | Firma G.B. Boucherie, Naamloze Vennootschap | METHOD FOR THE MANUFACTURE OF BRUSHES AND MACHINE FOR THE MANUFACTURE OF BRUSHES APPLYING SUCH METHOD. |
EP1136017B1 (en) | 2000-03-21 | 2003-06-25 | G.B. Boucherie, N.V. | Method and device for melting ends of bristles |
US7858188B2 (en) * | 2005-12-14 | 2010-12-28 | Dupont-Mitsui Fluorochemicals Co Ltd | Non-stick coating composition comprising diamond particles and substrate |
-
2009
- 2009-01-05 EP EP20090075002 patent/EP2078472B1/en not_active Not-in-force
- 2009-01-05 DE DE200960000006 patent/DE602009000006D1/en active Active
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010025852A1 (en) * | 2010-07-02 | 2012-03-29 | Gb Boucherie Nv | Method and apparatus for making brushes |
DE102012005311A1 (en) | 2012-03-19 | 2013-09-19 | Zahoransky Ag | Apparatus for producing brushes or bristles, and brush or brushware |
DE102012005311B4 (en) | 2012-03-19 | 2021-08-12 | Zahoransky Ag | Device for producing brushes or bristle goods, as well as brushes or bristle goods |
US11497302B2 (en) | 2017-10-24 | 2022-11-15 | Koninklijke Philips N.V. | Brush head manufacturing method and device |
Also Published As
Publication number | Publication date |
---|---|
DE602009000006D1 (en) | 2010-04-08 |
EP2078472A1 (en) | 2009-07-15 |
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