US20190298048A1 - Toothbrush And Method Of Making The Same - Google Patents

Toothbrush And Method Of Making The Same Download PDF

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Publication number
US20190298048A1
US20190298048A1 US16/303,007 US201616303007A US2019298048A1 US 20190298048 A1 US20190298048 A1 US 20190298048A1 US 201616303007 A US201616303007 A US 201616303007A US 2019298048 A1 US2019298048 A1 US 2019298048A1
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US
United States
Prior art keywords
bristles
plate
brush head
bristle
bristle plate
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.)
Abandoned
Application number
US16/303,007
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English (en)
Inventor
Xiaoteng ZHANG
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.)
Pesitro Healthcare Products Co Ltd
Original Assignee
Pesitro Healthcare Products Co Ltd
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 Pesitro Healthcare Products Co Ltd filed Critical Pesitro Healthcare Products Co Ltd
Assigned to Pesitro Healthcare Products Co., Ltd reassignment Pesitro Healthcare Products Co., Ltd ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ZHANG, Xiaoteng
Publication of US20190298048A1 publication Critical patent/US20190298048A1/en
Abandoned legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B7/00—Bristle carriers arranged in the brush 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
    • A46B5/00—Brush bodies; Handles integral with brushware
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B9/00—Arrangements of the bristles in the brush body
    • A46B9/02—Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups
    • A46B9/028—Bristle profile, the end of the bristle defining a surface other than a single plane or deviating from a simple geometric form, e.g. cylinder, sphere or cone
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B9/00—Arrangements of the bristles in the brush body
    • A46B9/02—Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups
    • A46B9/04—Arranged like in or for toothbrushes
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D1/00—Bristles; Selection of materials for bristles
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D1/00—Bristles; Selection of materials for bristles
    • A46D1/02—Bristles details
    • A46D1/0276—Bristles having pointed ends
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D3/00—Preparing, i.e. Manufacturing brush bodies
    • 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
    • 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 belongs to the field of oral care products, in particular to a toothbrush and a method of preparing the same.
  • Toothbrush is a commonly used oral nursing material.
  • a toothbrush generally includes a handle and a brush head 3 from which bristles generally formed as a plurality of tufts 4 protrude.
  • the brush head includes a support formed by an elastic material and having a plurality of fixing holes.
  • Each bristle tuft 4 is fixed in the fixing hole of the brush head through a metal sheet of the support, due to which heavy metal pollution may occur to some extent.
  • the bristle tuft 4 embedded therein is large, and it is easy to cause damage to a user's oral cavity during brushing.
  • the brush head of a fixed size has a small amount of bristles or a small bristle area, and the area of the brush head cannot be effectively utilized.
  • the existing bristles have a large diameter and are liable to damage user's gingiva. Such a toothbrush causes inconvenience to children, pregnant women, the elderly, and those with bleeding gingiva.
  • the existing toothbrush manufacturing process is relatively complicated and costly.
  • the present invention provides a toothbrush and a method of making the same.
  • a toothbrush comprising a handle and a cleaning member, the handle comprising a handheld portion and a brush head portion, the handheld portion being connected with the brush head portion, and the cleaning member being fixedly connected with the brush head portion, wherein the cleaning member comprises a plurality of bristles and a bristle plate, the bristle plate being formed by means of integral melting of the bottom of the plurality of the bristles, and the bristle plate being fixedly connected with the brush head portion.
  • the toothbrush can be made by a simple process with low cost.
  • the brush head portion comprises a bottom plate and a raised portion fixed to the periphery of the bottom plate.
  • the bottom plate forms an accommodating space with the raised portion, and the bottom of the bristle plate is placed in the accommodating space and fixedly connected with the bottom plate.
  • the bottom plate and the raised portion form an accommodating space in which the cleaning member is placed, which facilitates the placement and fixation of the entire cleaning member.
  • the brush head portion comprises a bottom plate and a raised portion
  • a neck is provided in the middle of the raised portion, with which the peripheral edge of the bristle plate can be engaged
  • the bottom of the bristle plate is fixedly connected with the bottom plate. Since a neck is provided in the middle of the raised portion, the entire cleaning member will not be detached easily after the peripheral edge of the bristle plate is fitted with the neck.
  • the bottom of the bristle plate is further fixedly connected with the bottom plate, which can further strengthen the fixing between the cleaning member and the brush head and prevent the cleaning member from detachment which will reduce the service life of the toothbrush.
  • the thickness of the bristle plate is 0.1-2.0 mm, and the height of the accommodating space is equal to the thickness of the bristle plate. Since the bristle plate is melted and bonded from the bottom of the bristles, the thickness of the bristle plate makes the bristles strong in adhesion, and filament breakage is not easy to occur. A bigger thickness will render filament breakage occurring frequently.
  • the height of the accommodating space being equal to the thickness of the bristles can facilitate the placement of the cleaning member. If the height of the accommodating space is larger than the thickness of the bristle plate, a certain space may readily present in the accommodating space, which cause ponding and increasing of bacterial growth. If the height of the accommodating space is smaller than the thickness of the bristle plate, the bristle plate will protrude outside the accommodating space and affect the appearance.
  • the bristles may have a diameter of 0.05-0.25 mm, which provides softer bristles than the existing bristle diameter and make user comfortable in cleaning the teeth. It is therefore more conducive to the use of children, pregnant women and patients with oral diseases having bleeding gingiva under friction. Under the premise of effectively preventing gingiva bleeding and gingiva damage, the toothbrush made of bristles having such a diameter has the greatest degree of cleaning of the teeth.
  • a method for making a toothbrush comprising:
  • the handheld portion is connected with the brush head portion, and the bottom of the bristle plate is fixed to the brush head portion.
  • the overall adhesion of the bristles is enhanced. Even if the bristles are small in diameter, the bristles will not be fall off easily. Meanwhile, the number of bristles on a brush head of the same size is increased, thereby increasing the cleaning area of the interface between the bristles and the teeth, which is conducive to tooth cleaning. Since the diameter of the bristles is 0.05-0.25 mm, it is softer than the existing bristle diameter, which can make user comfortable when cleaning the teeth, thus is more conducive to the use of children, pregnant women and those with bleeding gingiva.
  • the thickness of the bristle plate is 0.1-2.0 mm. Since the bristle plate is melted and bonded from the bottom of the bristles, the adhesion force of the bristles is the strongest when the thickness of the bristle plate is 0.1-2.0 mm, and filament breakage is not readily to occur. A bigger thickness will render filament breakage occurring frequently.
  • the bristles are placed vertically in the metal mold and heated to 400° C. Since the bristle plate is melted and bonded from the bottom of the bristles, the bristles exhibit the strongest adhesion when the heating temperature is 400° C., and filament breakage is not readily to occur. A lower or higher temperature will render filament breakage occur frequently.
  • the brush head portion comprises a bottom plate and a raised portion fixed to the periphery of the bottom plate.
  • the bottom plate forms an accommodating space with the raised portion, and the cleaning member is placed in the accommodating space.
  • the bottom of the bristle plate is bonded to the bottom plate with an adhesive or fixed to the bottom plate by ultrasonic welding.
  • the brush head portion comprises a bottom plate and a raised portion, a neck is provided in the middle of the raised portion, the peripheral edge of the bristle plate is embedded in the neck, and the bottom of the bristle plate is injection-bonded to the bottom plate.
  • the toothbrush made according to the present invention has a large number of bristles and good bristle softness.
  • the bristle plate and the bristles are integrally implanted into the brush head by melt-bonding the bottom of the bristles to form the bristle plate.
  • the entire process does not require any metal sheet, thus reducing the occurrence of metal contamination. Meanwhile, the toothbrush has better cleanliness while providing effectively preventing gingiva bleeding and gingiva damage.
  • FIG. 1 is a schematic side view showing the structure of a toothbrush according to an example of the prior art
  • FIG. 2 is a schematic side view showing the structure of a toothbrush according to an embodiment of the present invention.
  • FIG. 3 is a schematic side view showing the structure of a toothbrush according to an embodiment of the present invention.
  • FIG. 4 is a schematic side view showing the structure of a toothbrush according to an embodiment of the present invention.
  • FIG. 5 is a schematic side view showing the structure of a toothbrush according to an embodiment of the present invention.
  • FIG. 6 is a schematic side view showing the structure of a toothbrush according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural view of a cleaning member of a toothbrush according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural view of a brush head portion of a toothbrush according to an embodiment of the present invention.
  • FIG. 9 is a schematic side view showing the structure of a toothbrush according to an embodiment of the present invention.
  • FIG. 10 is a schematic side view showing the structure of a toothbrush according to an embodiment of the present invention.
  • a toothbrush comprising a handle 2 and a cleaning member 1 .
  • the handle 2 includes a handheld portion 202 and a brush head portion 201 .
  • the handheld portion 202 is connected with the brush head portion 201 .
  • the cleaning member 1 is fixedly connected with the brush head portion 201 .
  • the cleaning member 1 includes a plurality of bristles 101 and a bristle plate 102 .
  • the bristle plate 102 is integrally formed by melting the bottom of the plurality of bristles 101 .
  • the bottom of the bristle plate 102 is fixedly connected with the top of the brush head portion 201 .
  • the fixed connection method can be direct injection bonding by placing into a mold or adhesive bonding or ultrasonic welding.
  • the bristles 101 may be made of nylon yarn, which has high hardness and good durability.
  • the bristle 101 has a diameter of 0.05 to 0.25 mm. Since the plurality of bristles 101 is closely arranged, the bottom thereof is integrally melted into the bristle plate 102 and the unmelted portions are erected on the bristle plate 102 , thus enhancing adhesion of the overall bristles 101 , and the pulling force of the bristles 101 is greater than that of the existing toothbrush bristles clamped through metal clips.
  • the bristles 101 are thermally welded to each other to form the bristle plate 102 , the detachment of the bristles 101 can be prevented more reliably. Even if each of the bristles 101 has a small diameter, they are not easily detached. Meanwhile, the number of bristles 101 is increased at the brush head 201 of the same size. For example, there are typically 50 filaments inside a brush hole of an existing toothbrush head. Taking 30 brush holes as an example, the number of bristles of one toothbrush is 1500 filaments. When the diameter of bristles 101 according to the present invention is 0.07 mm, the number of bristles 101 per square centimeter is 25000, and the density greatly exceeds that of the existing toothbrush.
  • the number of bristles 101 on the brush head of the same size in the present invention is 50,000, which greatly increases the area of effective brushing. That is, the density of the bristles 101 on the brush head portion 201 is increased, thereby increasing the direct cleaning area of the bristles 101 and the teeth, which is advantageous for the cleaning of the teeth.
  • the bristles 101 have a diameter of 0.05 to 0.25 mm, which is softer than the diameter of the existing bristles 101 , and can be operated in a narrow portion such as a tooth neck or an interdental portion. A good brushing performance in the flat portion of the tooth and good effect of removing the whole tooth tartar can thus be provided.
  • the toothbrush made from the bristles 101 having a diameter of 0.07 mm has the greatest degree of cleaning of the teeth and the highest rate of dental plaque removal.
  • the brush head portion 201 includes a bottom plate 2011 and a raised portion 2012 fixed to the periphery of the bottom plate 2011 .
  • the bottom plate 2011 and the raised portion 2012 form an accommodating space 2013 .
  • the bottom of the bristle plate 102 is placed in the accommodating space 2013 and is fixedly connected to the bottom plate 2011 .
  • the bottom plate 2011 and the raised portion 2012 may also be integrally formed.
  • the bottom plate 2011 and the raised portion 2012 form the accommodating space 2013 in which the cleaning member 1 is placed. This makes it easier to place and secure the entire cleaning member 1 .
  • the thickness of the bristle plate 102 is 0.1-2.0 mm.
  • the height of the accommodating space 2013 is equal to the thickness of the bristle plate 102 . Since the bristle plate 102 is melt-bonded from the bottom of the bristles 101 , when the thickness of the bristle plate 102 is 0.1-2.0 mm, the bristles 101 have a strong adhesive force and are not easily broken.
  • the height of the accommodating space 2013 being equal to the thickness of the bristle plate 102 can facilitate the placement of the cleaning member 1 . If the height of the accommodating space 2013 is greater than the thickness of the bristle plate 102 , the accommodating space 2013 will have certain space which renders foreign matter remaining and water accumulated, thus increasing bacterial growth. If the height of the accommodating space 2013 is smaller than the thickness of the bristle plate 102 , the bristle plate 102 will protrude outside the accommodating space 2013 , which makes appearance deteriorate.
  • a neck 2014 may be provided in the middle of the raised portion 2012 .
  • the peripheral edge of the bristle plate 102 can be engaged with the neck 2014 .
  • the bottom of the bristle plate 102 is fixedly connected to the bottom plate 2011 .
  • the neck 2014 is provided in the middle of the raised portion 2012 .
  • the entire cleaning member 1 will not bliable to be detached.
  • the bottom of the bristle plate 102 is fixedly connected to the bottom plate 2011 , which can further enhance the fixing strength between the cleaning member 1 and the brush head portion 201 and prevent the cleaning member 1 from detachment to shorten the life of the toothbrush.
  • the bristles 101 as a whole can form an arc.
  • the tip end of the bristles 101 may be tapered.
  • the entire side surface of the bristles 101 can be formed into a V-shaped structure.
  • the bristle plate 102 and the brush head portion 201 can also be fixed by a reinforcing post 203 .
  • the toothbrush of the present invention since the toothbrush of the present invention has an integral structure of the bristles 101 and the bristle plate 102 of the cleaning member 1 and the thickness of the bristle plate 102 is small, the overall thickness of the cleaning member 1 is small. When it is combined with the brush head portion 201 , the brush head portion 201 need not be thick. Thus, the toothbrush has good operability in the oral cavity, and improves the ability of the bristle plate 102 to reach a dangerous part of a dental patient and the ability to remove the tartar from therefrom. In addition, the bristle plate 102 has a smaller diameter and is more likely to enter narrow portions between the interdental portion, the teeth and the gingiva. Therefore, compared with a conventional toothbrush, the removal effect of tartar or the like can be improved, the cleaning performance is excellent, and the comfort is good.
  • the method for making a toothbrush comprises the following steps.
  • a plurality of bristles 101 having a diameter of 0.05-0.25 mm are placed vertically in a metal mold and heated to 230-500° C.
  • the bottom of the bristles 101 is integrally melted into a bristle plate 102 in the metal mold.
  • the thickness of the bristle plate 102 is 0.1-2.0 mm.
  • the bristles 101 and the bristle plate 102 integrally form a cleaning member 1 . Since the bristle plate 102 is melt-bonded with the bottom of the bristles 101 , the bonding force of the bristles 101 is strong when the heating temperature is 400° C., and filament breakage is less likely to occur. A lower or higher temperature will cause a more obvious filament breakage or detachment.
  • a handle 2 is prepared, including a handheld portion 202 and a brush head portion 201 .
  • the handheld portion 202 is connected with the brush head portion 201 .
  • the bottom of the bristle plate 102 is fixed to the brush head portion 201 .
  • the brush head portion 201 includes a bottom plate 2011 and a raised portion 2012 fixed to the periphery of the bottom plate 2011 .
  • the bottom plate 2011 is integrally injection molded with the raised portion 2012 and forms an accommodating space 2013 .
  • the cleaning member 1 is placed in the accommodating space 2013 .
  • the bottom of the bristle plate 102 is directly injection-bonded to the bottom plate 2011 by placing into a mold or bonded to the bottom plate 2011 through an adhesive, or is fixed to the bottom plate 2011 by ultrasonic welding.
  • the brush head portion 201 includes a bottom plate 2011 and a raised portion 2012 .
  • a neck 2014 is provided in the middle of the raised portion 2012 .
  • the peripheral edge of the bristle plate 102 is embedded in the neck 2014 .
  • the bottom of the bristle plate 102 is injection molded and bonded to the bottom plate 2011 .
  • the plurality of bristles 101 is closely arranged and the bottom thereof is integrally melted into the bristle plate 102 and the unmelted portions are erected on the bristle plate 102 , thus the overall adhesion of the bristles 101 is enhanced. Even if the bristles 101 are small in diameter, it is not readily to suffer from bristle detachment. Meanwhile, the number of bristles 101 is increased on a brush head of the same size, thereby increasing the direct cleaning area of the bristles 101 and the teeth, which is beneficial to the cleaning of the teeth.
  • the diameter of the bristles 101 is 0.05-0.25 mm, which is softer than the bristles 101 of an existing diameter, and can provide comfort to the user while cleaning the teeth, and is more beneficial to children, pregnant women and patients with oral diseases having bleeding gingiva under friction.
  • Bristles are placed in a metal mold and the bottom thereof is heated to 400° C. and melted into a bristle plate.
  • the thickness of the bristle plate is the same, the length of each bristle protruding on the bristle plate is equal, and the diameter of the bristles is as shown in Table 1.
  • Test method the brush head of the toothbrush is fixed, a pulling force is applied with the same equipment, and the force is recorded when the bristles are pulled to break or pulled off, that is, their strength.
  • Test method 10 subjects brush their teeth for 3 minutes in the same manner using various toothbrushes, and the amount of spot adhesion before and after brushing of the full-mouth tooth surface is measured.
  • the conventional methods are as follows: first, dental plaque recording before brushing is made: before brushing, the subject first rinses with clean water, coats the tooth surface with a cotton swab having a volume fraction of 2% basic magenta, rinses mouth after stagnation for 1 minute, and then checks and fills in a plaque record card.
  • the recording method is as follows: four surfaces of the tooth under test (lip side, lingual side, mesial side, and distal side) are recorded. The tooth surface showing the presence of dental plaque can be indicated by “-” in the space of a corresponding part of the record card.
  • Test method 10 subjects brush their teeth with various toothbrushes for 3 minutes, and then the comfortable sensation of the toothbrushes is evaluated by their sensory.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Brushes (AREA)
US16/303,007 2016-05-17 2016-06-24 Toothbrush And Method Of Making The Same Abandoned US20190298048A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CN2016103266858 2016-05-17
CN201610326685.8A CN105768520A (zh) 2016-05-17 2016-05-17 牙刷及其制备方法
PCT/CN2016/086977 WO2017197707A1 (zh) 2016-05-17 2016-06-24 牙刷及其制备方法

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US20190298048A1 true US20190298048A1 (en) 2019-10-03

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US16/303,007 Abandoned US20190298048A1 (en) 2016-05-17 2016-06-24 Toothbrush And Method Of Making The Same

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US (1) US20190298048A1 (de)
EP (1) EP3459388A4 (de)
CN (1) CN105768520A (de)
BR (1) BR112018073640A2 (de)
WO (1) WO2017197707A1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112996412A (zh) * 2019-10-02 2021-06-18 河尚完 提高牙龈按摩及牙菌斑清除效率的牙刷
US11533985B2 (en) * 2017-09-15 2022-12-27 Colgate-Palmolive Company Oral care implement
US11925255B2 (en) 2018-05-22 2024-03-12 Fasteesh Method for manufacturing a dental brushing part, and dental brushing part

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Publication number Priority date Publication date Assignee Title
CA3021410C (en) 2017-10-27 2023-12-12 Sunstar Americas, Inc. Powered toothbrush bristle head
CN107625474A (zh) * 2017-10-30 2018-01-26 东莞向日葵美容用品有限公司 刷柄及洗脸刷
CN109077434B (zh) * 2018-06-28 2020-05-01 海宁市力佳隆门窗密封条有限公司 无基布焊接式毛刷条及其加工工艺

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US2215923A (en) * 1938-05-25 1940-09-24 Herbert S Goodwin Butcher's sanitary knife and saw rack
JPH0956476A (ja) * 1995-08-29 1997-03-04 Lion Corp ブラシおよびその製造方法
DE19542393A1 (de) * 1995-11-14 1997-05-15 Zahoransky Anton Gmbh & Co Verfahren zum Herstellen von Bürsten sowie Bürstenherstellungsmaschine
JPH1052317A (ja) * 1996-08-12 1998-02-24 Lion Corp ブラシの製造方法およびその製造装置
DE19818553C1 (de) * 1998-04-24 1999-08-05 Rueb F A Holding Gmbh Verfahren zur Herstellung einer Zahnbürste aus Kunststoff
US6832819B1 (en) * 1999-07-13 2004-12-21 Coronet-Werke Gmbh Method and device for producing brushes and brushes produced using the same
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Publication number Priority date Publication date Assignee Title
US11533985B2 (en) * 2017-09-15 2022-12-27 Colgate-Palmolive Company Oral care implement
US11925255B2 (en) 2018-05-22 2024-03-12 Fasteesh Method for manufacturing a dental brushing part, and dental brushing part
CN112996412A (zh) * 2019-10-02 2021-06-18 河尚完 提高牙龈按摩及牙菌斑清除效率的牙刷

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CN105768520A (zh) 2016-07-20
WO2017197707A1 (zh) 2017-11-23
EP3459388A1 (de) 2019-03-27
EP3459388A4 (de) 2019-07-17
BR112018073640A2 (pt) 2019-06-04

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