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WO1999042019A2 - Brosse a dents et procede permettant de fabriquer une touffe de soies destinee a etre utilisee dans une brosse a dents - Google Patents

Brosse a dents et procede permettant de fabriquer une touffe de soies destinee a etre utilisee dans une brosse a dents Download PDF

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Publication number
WO1999042019A2
WO1999042019A2 PCT/CA1999/000133 CA9900133W WO9942019A2 WO 1999042019 A2 WO1999042019 A2 WO 1999042019A2 CA 9900133 W CA9900133 W CA 9900133W WO 9942019 A2 WO9942019 A2 WO 9942019A2
Authority
WO
WIPO (PCT)
Prior art keywords
bristles
tuft
toothbrush
bristle
portions
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.)
Ceased
Application number
PCT/CA1999/000133
Other languages
English (en)
Other versions
WO1999042019A3 (fr
Inventor
Casper Wen-Tien Chiang
Yan Feng
Edgardo Gotangco Zapanta
Donna Beals
Michael Roberts
Bradley Castillo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gillette Canada Inc
Original Assignee
Gillette Canada Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Gillette Canada Inc filed Critical Gillette Canada Inc
Priority to AU25078/99A priority Critical patent/AU2507899A/en
Priority to EP99904665A priority patent/EP1056368A2/fr
Publication of WO1999042019A2 publication Critical patent/WO1999042019A2/fr
Publication of WO1999042019A3 publication Critical patent/WO1999042019A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D1/00—Bristles; Selection of materials for bristles
    • A46D1/08—Preparing uniform tufts of bristles
    • 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

Definitions

  • the invention relates generally to the field of oral care, and in particular to toothbrushes.
  • the invention also relates to a method of making a tuft of bristles which are usable in a toothbrush.
  • a tuft of bristles is "picked" from a large supply of pre-cut bristles.
  • the tuft of bristles is then stapled to a head of a preformed handle/head of a toothbrush.
  • the free ends of the bristles are end-rounded and then the toothbrush is packaged for shipment.
  • a more recently developed process for making toothbrushes requires that the picked tuft is heat-fused at one of its ends to melt the bristle ends together and thus secure the bristles together.
  • a large number of fused tufts are then placed in a toothbrush handle/head mold of an injection molding machine, with the fused ends of the tufts protruding into the mold and the remaining portion of the tuft being located outside of the mold.
  • Molten plastic is next injected into the mold cavity. When the plastic solidifies, it secures the fused ends of the tufts to the head of the just-formed toothbrush. In this process, the bristles can be end-rounded either before or after they are secured to the toothbrush head.
  • the variation allowed in the dimensions of an individual tuft in the two axes of the tuft which are perpendicular to each other and the long axis of the bristles has been limited.
  • traditional tufts are round in shape, and for those tufts which are other than round in shape, the dimension of the tuft along a first axis which is perpendicular to the long axis of the bristles will typically be no greater than two to three times the length of a dimension of the tuft along a second axis which is perpendicular to the first axis and the long axis of the bristles.
  • U.S. Patent No. 4,366,592 which issued on January 4, 1983 to Bromboz, discloses brushes and the method of making the same by first forming a strip embodying a backing sheet with bristles disposed on one face thereof in parallel relation to each other. Ends of the bristles project outwardly from one longitudinal edge of the strip. The strip is formed into a predetermined shape and then the bristle ends are secured in a base. Finally, the backing sheet is removed from the bristles.
  • a toothbrush includes a handle, a head extending from the handle and a tuft of bristles which are joined together at a base end of the bristles and secured to the head at the base end.
  • the tuft has a width and a length. A ratio of the width to the length is about 0.25 or less.
  • the toothbrush described in the previous paragraph includes a tuft having a relatively small width to length ratio not disclosed in the prior art. Such a tuft expands the available tuft shapes available to toothbrush designers, thereby allowing a greater variety of toothbrush bristle patterns.
  • a toothbrush includes a handle, a head extending from the handle and a tuft of bristles which are joined together at a base end of the bristles and secured to the head at the base end.
  • One of the bristles has a characteristic that is different from that characteristic of another one of the bristles, the characteristic being selected from the group consisting of material, color, gray scale, surface characteristic and cross-sectional shape.
  • a toothbrush with a tuft having bristles with different materials, colors, gray scales, surface characteristics and cross-sectional shapes By providing a toothbrush with a tuft having bristles with different materials, colors, gray scales, surface characteristics and cross-sectional shapes, the appearance and cleaning ability of the tuft, and thus the toothbrush, can be enhanced.
  • a toothbrush includes a handle, a head extending from the handle and a tuft of bristles which are joined together at a base end of the bristles and secured to the head at the base end.
  • a first one of the bristles is located in the tuft in a predetermined position and/or orientation relative to a second one of the bristles.
  • a method of making a tuft of bristles for use in a toothbrush includes the step of positioning a group of individual bristles adjacent to each other such that the bristles are substantially parallel to each other in their longest dimension.
  • the group of bristles has a width and a length. A ratio of the group width to length is about 0.25 or less.
  • the method also includes the step of securing one portion of each bristle to one portion of at least one other bristle to form a tuft.
  • FIG. 1 is a perspective view of a single bristle picker station
  • FIGs. 1 A and IB are top views of a picking wheel showing various notched circumferences of the wheel;
  • FIG. 2 is a top view of a tuft manufacturing machine including a pair of bristle picker stations;
  • FIG. 3 is a partial side view Of Fig. 2 along the direction of arrow X in Fig. 2;
  • FIGs. 4A-C are perspective views of three types of bristle tufts;
  • FIGs. 5A-C are side views of three tufts each having a different top contour
  • FIG. 6A-B are perspective views of two tufts with the bristle ends processed in two different manners
  • FIG. 7 is a looped bristle type of tuft
  • FIGs. 8A-C disclose steps for making round tufts
  • FIGs. 9A-D disclose steps for making round tufts and show a round tuft secured to a toothbrush head
  • FIG. 10 A-E discloses toothbrush heads with various types of tufts secured to the heads
  • FIG. 11 discloses another apparatus for making tufts
  • FIGs. 12A-B disclose tufts made by the apparatus of Fig. 11.
  • a supply of bristles 10 are stored in a magazine 11.
  • the bristles are, for example, preferably made of nylon or polyester.
  • the bristles can also be made of polypropylene or a natural or synthetic material suitable for bristles.
  • the bristles are preferably between about 12 to 37 mm long prior to being joined together, and have a preferable diameter of between about 0.1 to 0.25mm.
  • the bristles are pre-end-rounded at the ends showing in Fig. 1. All of the bristles 10 are preferably identical in material, length, cross-section, color and/or gray scale.
  • a pneumatically operated pusher 22 presses bristles 10 against one or more picking wheels 12 with a force of preferably between about 9 to 18 psi.
  • the circumference of wheel 12 is notched with each notch capable of holding a single bristle 10.
  • the shape of each notch is selected to hold a particular type of tuft.
  • all of the notches on a wheel preferably have the same shape, the spacing between notches can vary to allow varied spacing between picked bristles.
  • the wheels 12 in Figs 1A and IB have notches which differ in shape between the two wheels, thus allowing each wheel to pick a different sized bristle.
  • a pair of picking wheels 12 are shown and are rotated in the direction of arrows 23 at the same constant speed by a variable speed drive system (not shown).
  • Wheels 12 are preferably about 3 inches in diameter and are rotated at between about 3 to 30 rpm.
  • Bristles 10 being fed to a first one of picking wheels 12 can be different in material, length, cross-section, color and/or gray scale from bristles being fed to a second one of the picking wheels.
  • bristles 10 are pressed against wheels 12 by pushers 22, those bristles at a nip point 24 between the wheel and bristles are captured by the notches in the circumference of the wheel and carried in the direction of arrows 23.
  • Wheels 12 contact the bristles just below the mid-point of the bristle length.
  • a pair of pinch plates 26 for each wheel 12 contain bristles 10 in magazine 1 1 and prevent those bristles captured in the wheel notches from falling out of the notches once the captured bristles are rotated away from the supply of bristles.
  • Wheels 12 and pinch plates 26 are preferably made of hardened steel or carbide for wear resistance.
  • the notches on wheels 12 can have variable spacing between notches. This space can be very small to very large in size.
  • Wheels 12 are constructed and rotationally aligned such that where the wheels nip together, the notches on one wheel face the spaces between notches on the other wheel and vice versa. As such, when wheels 12 are rotated, bristles 10 are "shuffled together" one after the other in a single layer at the nip between the wheels like a deck of cards. Because the spacing between notches is variable, a huge variety of bristle patterns of the bristles from the two wheels twelve can be obtained. For example, the bristles from each wheel can alternate in a one to one pattern, a two to one pattern, or any pattern desired. Further, any bristle in the finished tuft will be in a predetermined position and/or orientation relative to any other bristle in the tuft.
  • Wheels 12 each carry their respective bristles to a nip of a pair of endless belts 13.
  • Belts 13 are nonstretchable or are minimally stretchable, and are preferably made of plastic.
  • the belts are rotated in the direction of arrows 28 by a pair of belt drive pulleys 14 which are powered by a variable speed drive system (not shown).
  • a pair of belt tensioners 16 maintain a desired tension on belts 13.
  • Two pairs of belt guide rollers 30 are located at both ends of where belts 13 nip together.
  • the belts 13 are driven by pulleys 14 at the same constant speed which may be the same as, slower than or faster than the speed at which wheels 12 are rotated. At an end of the nip between belts 13 which is adjacent wheels 12.
  • the belts capture the bristles from the nip of wheels 12 and carry them in the direction of arrow 28.
  • the mid-point of where belts 13 contact bristles 10 is just above the mid-point of the bristle length. If belts 13 are moving faster than wheels 12, bristles 10 will have their spacing increased on the belts. If belts 13 are moving the same speed as wheels 12, bristles 10 will maintain their spacing on the belts. If belts 13 are moving slower than wheels 12, bristles 10 will have their spacing compressed on the belts.
  • the bristles are preferably parallel to each other in their longest dimension at this point.
  • wheels 12 are disclosed for feeding two types of bristles to belts 13
  • additional wheels and belts can be added to feed additional types of bristles into belts 13.
  • an additional pair of belts (not shown), fed by an additional one or two picker wheels (not shown), would feed an additional one or two types of bristles to the nip point between wheels 12.
  • These additional belts would be located above wheels 12 while the bristles being carried by these belts would have the majority of their length protruding below the additional belts.
  • Wheels 12 would have spaces between their notches, which spaces would line up with each other, wherever the bristles from the additional belts were being introduced between wheels 12.
  • a pair of belt guide plates 15 are in contact with belts 13 on either side of where the belts nip together.
  • Each plate 15 is divided up into four sections A, B, C and D which can each be independently positioned closer to or further from the belt nip.
  • the pressure with which belts 13 nip bristles 10 can be adjusted in four zones of the nip between the belts.
  • the sections of plates 15 are positioned so that the nip pressure in zones A and D are relatively higher than the nip pressure in zones C and D. The reason for this pressure gradient will be explained below with reference to Fig. 3.
  • Fig. 3 is a partial side view of Fig.
  • Element is also moved up and down by a cam mechanism (not shown) in the direction of arrow 36.
  • This rotation and translation of element 32 moves the bristles axially and provides the pattern shown in Fig. 3.
  • Other types of shaping elements could be used to impart different contours to the bristles.
  • a resistive hot air blower 38 includes a fan 40 which draws air into the blower and blows the air past an electrically resistive heating element 42 to heat the air to preferably well above the melting temperature of the bristle material. The heated air then passes through a duct 44 and is blown onto a portion 46 of bristles 10 to fuse the bristles together at that portion. It is preferable that hot air be blown onto portion 46 from both sides of the ribbon to speed fusing together of the bristles. The fused together bristles result in a bristle ribbon 49. Portion 46 of bristles 10 could alternatively be fused together by ultrasonic or laser welding, or adhered together by application of an adhesive and/or a resin (synthetic and/or natural) to both sides of portion 46.
  • a cutter 48 then trims away the portion of bristles 10 from ribbon 49 which are below fused portion 46.
  • cutter 48 can trim away the lower portion of the bristles prior to the bristles being fused together by blower 38 (version not shown in drawings).
  • blower 38 version not shown in drawings.
  • Blower 38 in this version blows hot air directly from below and onto the severed ends of the bristles.
  • a second reciprocating cutter 50 which is reciprocated in the directions of an arrow 52, periodically cuts through fused portion 46 of the bristles to cut a tuft of bristles 54 free from ribbon 49. Tufts 54 are transported further in the direction of arrows 28 by pairs of nip rollers (not shown) for further processing. It should be noted that blower 38, and cutters 48, 50 are not visible in Fig. 2 because they are below plates 15.
  • tufts 54a-c are shown. All of these tufts have flat contours on top contrary to the rounded top contour of tuft 54 in Fig. 3. The end rounded ends 56 of the bristles are visible in Figs. 4A-C.
  • a ratio of the width to length "A"/"B" is about .25 or less.
  • a pair of tufts have been fused together to form a tuft 54b which is twice as wide as tuft 54a.
  • the pair of tufts can be fused together by first aligning the tufts and then subjecting them to heat via impinging hot air, a laser or ultrasonic waves on portions 46 of the two tufts.
  • the two tufts can be secured together with an adhesive and/or resin.
  • tuft 54c is made up of three tufts which have been secured together. Note that a middle tuft 58 is taller than the two outer tufts. This displays that any number of three dimensional contours for the finished tuft can be obtained by controlling the contour and bristle length of the bristle ribbons.
  • two or more bristle ribbons can be fused together first and then have individual tufts severed from the ribbon. This is accomplished by bringing the two or more bristle ribbons together in a desired alignment after each ribbon has been separately fused at its own portion 46, and then fusing together portion 46 from each of the ribbons by any of the fusing methods discussed above (i.e. ultrasonic, adhesive, resin). Then individual tufts 54 are cut away from the multi-layer bristle ribbon to form multi-layer tufts.
  • tufts each having a different top contour
  • Tuft 54a was discussed in the previous paragraph while tuft 54 was disclosed during the discussion of Fig. 3.
  • Tuft 54d has a "V" shaped top contour.
  • bristles 10a and 10b are in an alternating pattern. Bristles 10a were fed from one picking wheel 12 (Fig. 2) while bristles 10b were fed from the other picking wheel.
  • bristles 10a can differ from bristles 10b in material, length, cross-section, color and/or gray scale.
  • any pattern of bristles may be formed based on the notch and space arrangement on the periphery of picker wheels 12. For example, there could be two 10a bristles for every one 10b bristle.
  • tuft 54e and 54f similar to tuft 54c of Fig. 4C, are shown.
  • ends 62 of a middle layer of bristles 64 have been processed into a "micro-pick" form. This processing is done by (i) heating ends 62 to near their melting temperature, (ii) clamping a small portion of ends 62 with a bar clamp (not shown), (iii) pulling the bar clamp away from the bristles in the direction of the long axis of the bristles to cause ends 62 to "neck down", (iv) cooling bristle ends 62, and (v) cutting free the small portion of ends 62 which are secured within the clamp.
  • Tuft 54f of Fig. 6B includes a "micro-hook" at bristle ends 66.
  • This micro-hook is formed by a similar process used to form the micro-pick with one additional step. The step occurs just before cooling step (iv) described above and consists of rotating the clamp about 180 degrees to bend bristle ends 62 as shown in Fig. 6B.
  • the micro-pick and micro-hook provide enhanced cleaning near the interproximal zones of teeth and under the gum line (sub-gingival), each providing a different mouth feel.
  • Tuft 68 is formed by heat fusing a second portion 70 of bristles 10 together, portion 70 being located near the end of the bristles opposite the end near which portion 46 is located (see Fig. 46). The bristles are then bent in half to align fused portions 70 and 46 adjacent each other. Finally, portions 46 and 70 are heat fused together. Looped bristle tuft 68 provides improved stiffness and wear resistance. As a further optional processing step, the looped portion of the bristles can be heated to near their melting temperature and then pressed flat between two plates in order to flatten the looped portion of the bristles (not shown in drawings).
  • a process for forming a round tuft from a tuft cut from a bristle ribbon will be described.
  • a single layer tuft 72 is disclosed which has a "Length”, a bristle height "HI” at the left end and a bristle height "H2" at the right end (the bristles on the right portion of the tuft above portion 46 are not shown). This arrangement results in a sloping contour of the bristles.
  • tuft 72 is rolled up on itself to form a round tuft. Tuft 74 results if end "H2" is on the outside of the round tuft and end "HI" is on the inside (a convex tuft).
  • Tuft 76 results if end "HI " is on the outside of the round tuft and end "H2" is on the inside (a concave tuft).
  • portion 46 is again heat fused to secure portions 46 of the bristles together, thus locking the tuft into its rounded shape.
  • Fig. 8C three oblong tufts 80 are disclosed. An oblong tuft is obtained by partially flattening a round tuft, such as tuft 78, prior to heat fusing portion 46, and then causing portion 46 to be heat-fused together.
  • Figs. 9A-C are similar to Figs 8A-C except that Fig. 9A discloses a double layer tuft 82.
  • Tuft 82 has a shorter layer of bristles 84 behind which are a relatively longer layer of bristles 86.
  • the resulting tufts 88 and 90 have two independent topographies which are interpenetrating within each other.
  • Toothbrush 94 can be made by the following process which is generally understood by those skilled in the art and which is disclosed in U.S. Patent No. 5,609,890 which issued on March 11, 1997. Tuft 88 along with other tufts of a similar nature are inserted into respective apertures in a metal insert bar. The insert bar is then secured to a first mold half of an injection molding machine such that fused ends 46 project into the mold cavity.
  • the mold is then closed to secure the first mold half to a second mold half.
  • Fused ends 46 of the tufts are located just within the mold cavity with the non- fused portions of the bristles being located outside of the mold cavity.
  • Polypropylene is then injected into the mold cavity to form a handle
  • Figs. 10 A-E disclose toothbrush heads and portions of integral handles with tufts secured to the heads. These tufts have not been rolled up, as described above, and thus have a very small width "A" when compared to their length "B".
  • a ratio of width "A" to length “B” is preferably about 0.25 or less.
  • Length "B” can be a straight line length, a curvilinear length (see Fig. 10(E) or a distance along the longest dimension of the tuft in which this tuft is bent to form two or more tuft sections which are at angles greater than zero to each other.
  • These toothbrushes can be made by the process described above. All of these tufts can have from only one up to a very large number of layers of bristles in each tuft. In this case, the tuft's width/length ratio may be greater than .25.
  • Fig. 10A is a side view of one embodiment of a toothbrush while Fig. 10B is a top view of the same embodiment.
  • Toothbrush 98 includes a handle 100 and a head 102. Tufts 104, as shown in Fig 10A, alternate from a relatively taller tuft to a relatively shorter tuft.
  • Fig. 10B shows that the tufts are all straight, and that they are all the same length except for the shorter tuft which is furthest from handle 100.
  • the bristles in each tuft are preferably parallel to each other.
  • Fig. 10C discloses a toothbrush 106 with a different tuft pattern. Here, four long straight rows of tufts 108 are oriented parallel to a long axis 109 of head 102.
  • Two end tufts 110 are located at either end of head 102 and are curved in shape.
  • a series of identical, straight tufts are oriented on head 102 at an oblique angle to axis 109.
  • Fig. 10E discloses identical curved tufts 114 which arc across the width of head 102.
  • FIG. 11 another embodiment of an apparatus for making tufts is disclosed.
  • a large number of filaments F01, F02...F50 are passed through a feeding rack 120.
  • Rack 120 brings the filaments into close proximity yet keeps them from crossing over by maintaining a preset gap between each of the filaments. This is accomplished by having separate apertures through rack 120 for each filament.
  • the filaments then pass through a plastic welding means such as a heating element 122 which includes a scanning laser for periodically fusing (securing) the filaments together at, for example, location 124.
  • a heating element 122 which includes a scanning laser for periodically fusing (securing) the filaments together at, for example, location 124.
  • an ultra-sonic or hot air system can be used to fuse the bristles together.
  • a drive system 126 includes four nip wheels which engage the filaments and are rotated to move the filaments through the apparatus.
  • a punch press then severs a section of the filaments 130 free from the filaments with a die 132 which reciprocates in the directions of an arrow 134.
  • a cutter (not shown) then cuts sections 130 into individual tufts of bristles 136.
  • Figs. 12A-B two tufts are disclosed which result when heater 122 (Fig. 11) is rotated such that it fuses the filaments at an oblique angle to the direction of travel (long axis) of the filaments.
  • the filaments are fused in a direction perpendicular to the long axis of the filaments.
  • tuft 138 Fig. 12 A
  • Tuft 144 Fig 12B
  • Tuft 144 is formed by placing two of tufts 138 together with one of tufts 138 having been flipped over. The two portions 142 are then fused together.

Landscapes

  • Brushes (AREA)

Abstract

Brosse à dents (98) comprenant un manche (100), une tête (102) partant du manche et une touffe (104) de soies, réunies au niveau de leur extrémité basale et fixées sur la tête par ladite extrémité. La touffe a une largeur et une longueur, le rapport de la largeur sur la longueur étant égal ou inférieur à 0,25 environ.
PCT/CA1999/000133 1998-02-20 1999-02-12 Brosse a dents et procede permettant de fabriquer une touffe de soies destinee a etre utilisee dans une brosse a dents Ceased WO1999042019A2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU25078/99A AU2507899A (en) 1998-02-20 1999-02-12 Toothbrush and method for making a tuft of bristles usable in a toothbrush
EP99904665A EP1056368A2 (fr) 1998-02-20 1999-02-12 Brosse a dents et procede permettant de fabriquer une touffe de soies destinee a etre utilisee dans une brosse a dents

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US2698298A 1998-02-20 1998-02-20
US09/026,982 1998-02-20
US24300599A 1999-02-02 1999-02-02
US09/243,005 1999-02-02

Publications (2)

Publication Number Publication Date
WO1999042019A2 true WO1999042019A2 (fr) 1999-08-26
WO1999042019A3 WO1999042019A3 (fr) 1999-12-09

Family

ID=26701892

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PCT/CA1999/000133 Ceased WO1999042019A2 (fr) 1998-02-20 1999-02-12 Brosse a dents et procede permettant de fabriquer une touffe de soies destinee a etre utilisee dans une brosse a dents

Country Status (5)

Country Link
EP (1) EP1056368A2 (fr)
CN (1) CN1291087A (fr)
AR (1) AR014636A1 (fr)
AU (1) AU2507899A (fr)
WO (1) WO1999042019A2 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6096151A (en) * 1998-06-05 2000-08-01 E. I. Du Pont De Nemours And Company Method and apparatus for making articles having bristles
WO2000047082A1 (fr) * 1999-02-09 2000-08-17 E.I. Du Pont De Nemours And Company Sous-ensembles de soies et procede de fabrication correspondant
WO2001012013A1 (fr) * 1999-08-17 2001-02-22 Gillette Canada Company Brosse a dents et procede de fabrication d'une touffe de poils destinee a une brosse a dents
US6269514B1 (en) 1998-06-05 2001-08-07 Du Pont Monofilament bristle assemblies and methods of making brushes using same
US6351868B1 (en) 1998-06-05 2002-03-05 E.I. Dupont De Nemours & Company Bristle sub-assemblies having parallel pairs of bristles; and methods
US6543083B1 (en) 1998-06-05 2003-04-08 E. I. Du Pont De Nemours & Co. Bristles having varying stiffness

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4366592A (en) 1980-08-06 1983-01-04 Bromboz Jonathan J Brushes and method of making same
US5609890A (en) 1994-04-19 1997-03-11 G.B. Boucherie N.V. Molding machine for injection molding of tooth brushes

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0142885B1 (fr) * 1983-11-16 1991-02-06 Anchor Advanced Products, Inc. Procédé de fabrication de brosses pourvues de moyens propres de fixation des soies et brosses ainsi obtenues
DE3422623A1 (de) * 1984-06-19 1985-12-19 Coronet - Werke Heinrich Schlerf Gmbh, 6948 Wald-Michelbach Zahnbuerste
DE3624343A1 (de) * 1985-07-18 1988-05-11 Eugen Gutmann Gmbh & Co Kg Verfahren zur herstellung eines faserstreifens und vorrichtung zur durchfuehrung des verfahrens
DE3823203A1 (de) * 1988-07-08 1990-01-11 Sanadent Ag Verfahren zum anbringen mindestens eines flexiblen, laengsausgedehnten elementes, anordnung mit einem solchen element und buerste
DE9016467U1 (de) * 1990-04-27 1991-02-21 Rueb, Fritz, 7869 Schönau Bürste mit Kunststoffborsten, insbesondere Zahnbürste

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4366592A (en) 1980-08-06 1983-01-04 Bromboz Jonathan J Brushes and method of making same
US5609890A (en) 1994-04-19 1997-03-11 G.B. Boucherie N.V. Molding machine for injection molding of tooth brushes

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6096151A (en) * 1998-06-05 2000-08-01 E. I. Du Pont De Nemours And Company Method and apparatus for making articles having bristles
US6260229B1 (en) 1998-06-05 2001-07-17 E. I. Du Pont De Nemours And Company Bristle sub-assemblies and method of making same
US6269514B1 (en) 1998-06-05 2001-08-07 Du Pont Monofilament bristle assemblies and methods of making brushes using same
US6351868B1 (en) 1998-06-05 2002-03-05 E.I. Dupont De Nemours & Company Bristle sub-assemblies having parallel pairs of bristles; and methods
US6434778B1 (en) 1998-06-05 2002-08-20 E. I. Du Pont De Nemours And Company Monofilament bristle assemblies and methods of making brushes using same
US6543083B1 (en) 1998-06-05 2003-04-08 E. I. Du Pont De Nemours & Co. Bristles having varying stiffness
WO2000047082A1 (fr) * 1999-02-09 2000-08-17 E.I. Du Pont De Nemours And Company Sous-ensembles de soies et procede de fabrication correspondant
WO2001012013A1 (fr) * 1999-08-17 2001-02-22 Gillette Canada Company Brosse a dents et procede de fabrication d'une touffe de poils destinee a une brosse a dents

Also Published As

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WO1999042019A3 (fr) 1999-12-09
AR014636A1 (es) 2001-03-28
CN1291087A (zh) 2001-04-11
EP1056368A2 (fr) 2000-12-06
AU2507899A (en) 1999-09-06

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