KR101775623B1 - A bristle for toothbrush containing a coating fiber and a method thereof - Google Patents
A bristle for toothbrush containing a coating fiber and a method thereof Download PDFInfo
- Publication number
- KR101775623B1 KR101775623B1 KR1020150176834A KR20150176834A KR101775623B1 KR 101775623 B1 KR101775623 B1 KR 101775623B1 KR 1020150176834 A KR1020150176834 A KR 1020150176834A KR 20150176834 A KR20150176834 A KR 20150176834A KR 101775623 B1 KR101775623 B1 KR 101775623B1
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- KR
- South Korea
- Prior art keywords
- silane coupling
- coupling agent
- weight
- parts
- yarn
- Prior art date
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Classifications
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46D—MANUFACTURE OF BRUSHES
- A46D1/00—Bristles; Selection of materials for bristles
- A46D1/04—Preparing bristles
-
- 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
- A46D1/02—Bristles details
- A46D1/0207—Bristles characterised by the choice of material, e.g. metal
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46D—MANUFACTURE OF BRUSHES
- A46D9/00—Machines for finishing brushes
- A46D9/02—Cutting; Trimming
-
- 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
Abstract
The present invention relates to a bristle including a coated yarn, and more particularly to a bristle including a yarn selected from a polyolefin fiber, a polyester fiber, a nylon fiber, a polyvinyl chloride fiber and a polyurethane fiber; And a coating layer coated on the yarn and comprising a coating layer comprising a thermoplastic resin, inorganic particles and an antimicrobial agent.
The present invention can provide a bristle excellent in durability, flexibility, strength, antimicrobial, penetration, cleaning power, and ability to prevent damage to the gums.
Further, the present invention provides a method for manufacturing a bristle which is excellent in durability, flexibility, strength, antimicrobial property, penetration ability, detergency, and ability to prevent gum damage, and which can maintain tooth health and prevent gum damage and can be used stably for a long period of time can do.
Description
The present invention relates to a bristle including a coated yarn, and more particularly to a bristle including a yarn selected from a polyolefin fiber, a polyester fiber, a nylon fiber, a polyvinyl chloride fiber and a polyurethane fiber; And a coating layer coated on the yarn and comprising a coating layer comprising a thermoplastic resin, inorganic particles and an antimicrobial agent.
A toothbrush is a typical tool used to clean the mouth including the tongue.
Generally, the toothbrush is composed of a bag and bristles, and the bristles are manufactured using a polymer resin having elasticity.
Generally, bristles are made of nylon or polyester. Nylon has the advantages of moderate elasticity and flexibility, but it has a short life span due to its high absorbency and low strength and penetration ability, which makes it difficult to completely remove tartar and food residue I have.
On the other hand, polyester has strong strength and low flexibility, which can damage the user's gums.
In order to solve such problems, Korean Patent Laid-Open No. 10-2006-0067779 discloses a polypropylene resin composition comprising polybutylene terephthalate, a polyethylene terephthalate resin, and a unit yarn extruded with an alloy resin thereof having a diameter of 0.07 to 0.25 mm and a yarn bundle diameter of 50 to 60 mm Heat-resistant polyvinyl chloride, and fluorine resin film, and then a method of producing human hair and bristles which is hydrolyzed by chemical reaction at a concentration of NaOH of 42 to 47% and a reaction temperature of 123 to 130 ° C for 20 to 50 minutes .
Korean Patent No. 10-1281635 discloses a bristle made of a resin composition comprising a polyester resin and a nylon blend resin and an inorganic antibacterial agent.
Korean Patent No. 10-0944799 discloses a toothbrush provided with brush bristles provided at one end of a toothbrush bag and a toothbrush so as to be gripped by hand. The brush bristles are characterized in that the bristles Wherein the powder is provided by containing powder or concentrated extract.
However, the bristles disclosed in the above document are poor in durability, flexibility, strength, antibacterial properties, penetration, cleaning power, ability to prevent damage to the gums, and can not be stably used for a long period with a toothbrush.
It is an object of the present invention to provide a bristle having excellent durability, flexibility, strength, antibacterial property, penetration ability, cleaning power, and ability to prevent damage to the gums.
Further, the present invention provides a method for manufacturing a bristle which is excellent in durability, flexibility, strength, antimicrobial property, penetration ability, detergency, and ability to prevent gum damage, and which can maintain tooth health and prevent gum damage and can be used stably for a long period of time .
In order to achieve the above object, the present invention provides a yarn selected from polyolefin fibers, polyester fibers, nylon fibers, polyvinyl chloride fibers and polyurethane fibers; And a coating layer coated on the yarn and comprising a thermoplastic resin, inorganic particles and an antibacterial agent.
In one embodiment of the present invention, the coating layer comprises 1 to 30 parts by weight of inorganic particles and 0.1 to 5 parts by weight of an antibacterial agent per 100 parts by weight of the thermoplastic resin.
In one embodiment of the present invention, the coating layer further comprises 1 to 10 parts by weight of a silane coupling agent.
In one embodiment of the present invention, the inorganic particles are surface treated with an amino group-containing silane coupling agent and an epoxy group-containing silane coupling agent.
In one embodiment of the present invention, the bristles are tapered at their distal ends.
Further, the present invention provides a toothbrush manufactured by putting the bristles on.
In addition, the present invention provides a method for producing a coated yarn, comprising: a step of preparing a coating yarn for passing a yarn through a die nozzle of an extruder and forming a coating layer on a surface of the yarn; And a filament manufacturing step of cooling and winding the coated yarn, wherein the yarn is selected from a polyolefin fiber, a polyester fiber, a nylon fiber, a polyvinyl chloride fiber and a polyurethane fiber, the coating layer comprising a thermoplastic resin, The present invention also provides a method for producing a bristle, which comprises an antibacterial agent.
In one embodiment of the present invention, the method further includes a tapering step of dipping the end of the filament in an acid solution or an alkali solution after the filament manufacturing step to perform a tapering treatment.
The present invention can provide a bristle excellent in durability, flexibility, strength, antimicrobial, penetration, cleaning power, and ability to prevent damage to the gums.
Further, the present invention provides a method for manufacturing a bristle which is excellent in durability, flexibility, strength, antimicrobial property, penetration ability, detergency, and ability to prevent gum damage, and which can maintain tooth health and prevent gum damage and can be used stably for a long period of time can do.
Hereinafter, the present invention will be described in detail based on examples. It is to be understood that the terminology, examples and the like used in the present invention are merely illustrative of the present invention in order to more clearly explain the present invention and to facilitate understanding of the ordinary artisan, and should not be construed as being limited thereto.
Technical terms and scientific terms used in the present invention mean what the person skilled in the art would normally understand unless otherwise defined.
The present invention relates to a yarn selected from a polyolefin fiber, a polyester fiber, a nylon fiber, a polyvinyl chloride fiber and a polyurethane fiber; And a coating layer coated on the yarn and comprising a coating layer comprising a thermoplastic resin, inorganic particles and an antimicrobial agent.
Polyolefin fibers, polyester fibers, nylon fibers, polyvinyl chloride fibers, polyurethane fibers, and the like can be used as the raw material for the core of the coated yarn.
The diameter of the yarn is 0.1 to 2,000 denier, and the thickness of the coating layer coated on the yarn is 10 to 1,000 mu m.
The cross-sectional shape of the yarn may be circular, triangular, square, star shape, dumbbell shape, cruciform shape, disc shape, gull shape, rhombus shape, conical shape,
By varying the cross-sectional shape of the yarn, various shapes of end portions can be realized when the end portions of the bristles are tapered to improve the penetration and washing power of the bristles.
The coated yarn may be passed through a die nozzle of an extruder and a coating layer may be coated on the surface of the yarn to a predetermined thickness to produce a coated yarn.
The yarn may include one strand of yarn or a plurality of strands of yarn in the coating layer of the coated yarn because one or more strands may be passed through the nozzle.
In particular, when a plurality of yarns are contained in the coating layer, various shapes of end portions can be realized through tapering, thereby controlling the penetration and cleaning power of the bristles.
The cross-sectional shape of the coated yarn can be used without restrictions such as circular, triangular, square, star, dumbbell, cruciform, disk, gull, rhombus, cone, hollow fiber and the like.
The coating layer coated on the yarn includes a thermoplastic resin, an inorganic particle and an antimicrobial agent.
The coating layer exists on the surface of the yarn and contacts the gums and teeth when brushing teeth. It can prevent direct contact of the fibers to the gums and teeth, thereby effectively preventing damage to the gums and teeth and preventing tooth diseases .
In addition, the coating layer protects the yarn present in the inner core, thereby preventing strength and durability deterioration due to moisture absorption of the yarn and prolonging service life.
The coating layer may contain 1 to 30 parts by weight of inorganic particles and 0.1 to 5 parts by weight of an antibacterial agent per 100 parts by weight of the thermoplastic resin.
As the thermoplastic resin, polyolefin, polyester, nylon, polyvinyl chloride, polyurethane, acrylic resin, silicone resin and the like can be used without limitation, and polyolefin, polyester and nylon are particularly preferable.
The content of the inorganic particles is preferably 1 to 30 parts by weight based on 100 parts by weight of the thermoplastic resin. When the content of the inorganic particles is less than 1 part by weight, the inorganic particles are improved in strength and durability And when it exceeds 30 parts by weight, the workability and strength are rather lowered.
As the inorganic particles, calcium carbonate, silica, alumina, titanium dioxide, zinc oxide, zirconium carbide, magnesium oxide, talc, diatomaceous earth and kaolin can be used without limitation.
The inorganic particles may be surface-treated with a silane coupling agent and used. The silane coupling agent has an organic functional group capable of binding with an organic compound and a hydrolyzable group capable of reacting with an inorganic substance and improves the interfacial adhesion between the yarn, thermoplastic resin and inorganic particles to increase the adhesive strength, durability, have.
As the silane coupling agent, an alkyl group-containing silane, an amino group-containing silane, an epoxy group-containing silane, an acrylic group-containing silane, an isocyanate group-containing silane, a mercapto group-containing silane, a fluorine group-containing silane,
The amount of the silane coupling agent to be surface-treated is preferably 1 to 10 parts by weight based on 100 parts by weight of the inorganic particles. When the content is less than 1 part by weight, it is difficult to improve the adhesion. When the amount exceeds 10 parts by weight, The use of the adhesive reduces the interfacial adhesion properties and durability.
The inorganic particles may preferably be surface-treated with an amino group-containing silane coupling agent and an epoxy group-containing silane coupling agent.
The content of the antimicrobial agent is preferably 0.1 to 5 parts by weight based on 100 parts by weight of the thermoplastic resin. When the content of the antimicrobial agent is less than 0.1 parts by weight, If it exceeds the weight part, the durability is rather lowered.
As the antibacterial agent, an inorganic substance carrying a metal ion such as zeolite, calcium phosphate, zirconium phosphate, gold, silver or platinum, a guanidine-based compound or the like can be used without limitation.
The coating layer of the present invention may further comprise 1 to 10 parts by weight of a silane coupling agent. If the content of the silane coupling agent is less than 1 part by weight, it is difficult to expect an improvement in the adhesion. If the amount exceeds 10 parts by weight, the use of an excessive silane coupling agent results in deterioration of interfacial adhesion properties and durability.
The coating layer may further comprise 1 to 5 parts by weight of a silane coupling agent oligomer prepared by previously reacting an amino group-containing silane coupling agent and an epoxy group-containing silane coupling agent.
By using the silane coupling agent oligomer, workability in forming a coating layer can be improved and the thickness of the prepared coating layer can be uniformly controlled.
The molecular weight of the silane coupling agent oligomer is preferably 1,000 to 5,000 g / mol, and the silane coupling agent oligomer is preferably used in an amount of 1 to 5 parts by weight based on 100 parts by weight of the thermoplastic resin. When the content is less than 1 part by weight, the effect is insignificant. When the content is more than 5 parts by weight, the workability is lowered and the thickness of the coating layer becomes uneven.
The coating layer may further comprise an acrylic emulsion. The acrylic emulsion is used for imparting adhesiveness and elasticity, and examples of the acrylic resin to be used include polymethyl methacrylate, polyethyl methacrylate, polymethyl acrylate, polyethyl acrylate, acrylic copolymer and the like.
The content of the acrylic emulsion is preferably 1 to 5 parts by weight with respect to 100 parts by weight of the thermoplastic resin. When the content is less than 1 part by weight, the adhesiveness and elasticity can not be sufficiently manifested. When the content is more than 5 parts by weight, .
The coating layer of the present invention may include a pigment, a fluorine compound, a dispersant, a wetting agent, an antioxidant, an antistatic agent, a release agent and the like.
The bristles made of the coated yarn may be tapered with an acidic solution, an alkali solution or the like in order to form irregularities on the surface and narrow the ends.
The ends of the filaments can be made thin by dipping one or both ends of the produced filaments into a working tank containing an acid solution or an alkali solution.
As the acidic solution, 5 to 40% of hydrochloric acid, nitric acid, sulfuric acid and the like are used. As the alkali solution, 5 to 40% of sodium hydroxide, ammonium hydroxide, calcium hydroxide, potassium hydroxide and the like can be used.
The tapering treatment is preferably performed at a temperature of 80 to 150 DEG C, and the length of the tapering can be adjusted according to the immersion length.
It is also possible to adjust the cross-sectional area of the tapered end by adjusting the number of immersions. It is preferable to repeat the immersion for 1 to 100 times at a time of 10 to 60 seconds per desirably.
The cross-sectional area of the filament tapered by repeated soaking becomes smaller as it goes toward the end, and the filament having a desired end portion can be produced in the present invention.
As an example of the present invention, the end of the filament is formed into a conical shape by the tapering process, the upper end of the conical shape is composed of a yarn corresponding to the core of the coated yarn, and the lower end is formed of a coating layer.
The conical top portion can easily penetrate between the teeth, thereby effectively removing the tartar and food waste, thereby improving the penetration ability, cleaning power and brushing feel of the bristles.
In addition, the lower end of the conical shape protects the yarn to maintain the durability of the yarn, and the surface area of the filament increases due to the formation of irregularities due to the inorganic particles and the antibacterial agent on the surface, so that the antibacterial and cleaning ability of the bristles can be increased.
The tapered filament is washed 2 to 5 times in flowing water to remove the disassembled portion of the filament.
The present invention also provides a method for producing a coated yarn, comprising the steps of: passing a yarn through a die nozzle of an extruder and forming a coating layer on the surface of the yarn; And a filament manufacturing step for winding and winding the coating yarn.
The coated yarn may be manufactured by passing a yarn through a dice nozzle of an extruder maintained at 180 to 300 ° C and injecting a thermoplastic resin composition for forming a coating layer on the side to form a coating layer having a predetermined thickness on the surface of the yarn have.
The diameter of the yarn is preferably from 0.1 to 2,000 denier, and the thickness of the coating layer coated on the yarn is preferably from 10 to 1,000 mu m.
The present invention may further include a tapering step of dipping the end of the filament in an acidic or alkaline solution after the step of preparing the filament to taper.
The tapering process can reduce the cross-sectional area of the end of the filament and form irregularities on the surface of the filament, thereby improving the penetration and cleaning power of the bristles.
The tapered filament can be used to make a toothbrush in a toothbrush.
Hereinafter, the present invention will be described in detail with reference to Examples and Comparative Examples. The following examples are intended to illustrate the practice of the present invention and are not intended to limit the scope of the present invention.
(Example 1)
100 parts by weight of polybutylene terephthalate resin, 15 parts by weight of titanium dioxide and 3 parts by weight of zeolite were mixed to prepare a composition for forming a coating layer.
Three yarns of polyethylene terephthalate yarn having a diameter of 0.076 mm (3 mils) were passed through a die nozzle of an extruder, and the composition for forming a coating layer was coated on the yarn to a thickness of 20 m to prepare a coated yarn.
The coated yarn was cooled and wound to produce filaments.
(Example 2)
Filament was prepared in the same manner as in Example 1, except that 0.5 part by weight of titanium dioxide was used.
(Example 3)
A filament was prepared in the same manner as in Example 1, except that 50 parts by weight of titanium dioxide was used.
(Example 4)
Filament was prepared in the same manner as in Example 1, except that titanium dioxide surface-treated with 3-aminopropyltrimethoxysilane and 3-glycidoxypropyltrimethoxysilane was used.
(Example 5)
Except that 5 parts by weight of 3-aminopropyltrimethoxysilane was additionally used.
(Example 6)
One end of the filament prepared in Example 1 was tapered by immersing in a sodium hydroxide solution at a concentration of 30% at 120 캜 for 30 minutes.
The tapered filament was washed twice with flowing water to prepare a tapered filament.
(Comparative Example 1)
The polybutylene terephthalate was extruded, cooled, and wound to produce filaments.
(Comparative Example 2)
One end of the filament prepared in Comparative Example 1 was tapered by immersing in a sodium hydroxide solution at a concentration of 30% at 120 캜 for 30 minutes.
The tapered filament was washed twice with flowing water to prepare a tapered filament.
(Comparative Example 3)
Filaments were prepared in the same manner as in Example 1, except that titanium dioxide was not used.
In order to compare the flexibility, durability, brushing feel and washing power of the toothbrushes prepared from the filaments of the above Examples and Comparative Examples, sensory tests were conducted on 50 panels.
The sensory evaluation was carried out according to the 5 point scale method (5: excellent, 4: excellent, 3: normal, 2: bad, 1: very bad) and after examining the flexibility, durability, The results are shown in Table 1 below.
From the results shown in Table 1, the bristles of Examples 1 to 6 are excellent in durability, softness, penetration, washing power, brushing sensation and the like, so that they can maintain tooth health and prevent damage to the gums and can be used stably for a long period of time.
On the other hand, the bristles of Comparative Examples 1 to 3 are inferior in durability, flexibility, penetration, washing power, tooth brushing, etc., compared with the examples.
Claims (8)
A coating layer coated on the yarn and comprising a thermoplastic resin, an inorganic particle, an antibacterial agent, a silane coupling agent, a silane coupling agent oligomer prepared by previously reacting an amino group-containing silane coupling agent and an epoxy group-containing silane coupling agent, and an acrylic emulsion,
Wherein the coating layer comprises 1 to 30 parts by weight of inorganic particles, 0.1 to 5 parts by weight of an antibacterial agent, 1 to 10 parts by weight of a silane coupling agent, 1 to 5 parts by weight of a silane coupling agent oligomer and 1 to 5 parts by weight of an acrylic emulsion ≪ / RTI >
The inorganic particles are surface-treated with an amino group-containing silane coupling agent and an epoxy group-containing silane coupling agent,
Characterized in that the content of the surface-treated silane coupling agent is 1 to 10 parts by weight per 100 parts by weight of the inorganic particles.
Wherein a distal end of the bristles is tapered.
And a filament manufacturing step of winding the coating yarn by cooling it,
The yarn is selected from polyolefin fibers, polyester fibers, nylon fibers, polyvinyl chloride fibers and polyurethane fibers,
Wherein the coating layer comprises a silane coupling agent oligomer and an acrylic emulsion prepared by previously reacting a thermoplastic resin, an inorganic particle, an antibacterial agent, a silane coupling agent, an amino group-containing silane coupling agent and an epoxy group-containing silane coupling agent,
Wherein the coating layer comprises 1 to 30 parts by weight of inorganic particles, 0.1 to 5 parts by weight of an antibacterial agent, 1 to 10 parts by weight of a silane coupling agent, 1 to 5 parts by weight of a silane coupling agent oligomer and 1 to 5 parts by weight of an acrylic emulsion ≪ / RTI >
The inorganic particles are surface-treated with an amino group-containing silane coupling agent and an epoxy group-containing silane coupling agent,
Wherein the content of the surface-treated silane coupling agent is 1 to 10 parts by weight based on 100 parts by weight of the inorganic particles.
Further comprising a tapering step of dipping the end of the filament in an acidic or alkaline solution after the filament manufacturing step to taper the end of the filament.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020150176834A KR101775623B1 (en) | 2015-12-11 | 2015-12-11 | A bristle for toothbrush containing a coating fiber and a method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020150176834A KR101775623B1 (en) | 2015-12-11 | 2015-12-11 | A bristle for toothbrush containing a coating fiber and a method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR20170069520A KR20170069520A (en) | 2017-06-21 |
| KR101775623B1 true KR101775623B1 (en) | 2017-09-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| KR1020150176834A KR101775623B1 (en) | 2015-12-11 | 2015-12-11 | A bristle for toothbrush containing a coating fiber and a method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR102640547B1 (en) * | 2022-09-27 | 2024-02-27 | 박선영 | Multi-Stage Toothbrush Hairs and Manufacturing Method of the Same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008086683A (en) | 2006-10-05 | 2008-04-17 | Toray Monofilament Co Ltd | Bristle material for brush, method for manufacturing the same, and brush |
| KR101201517B1 (en) | 2011-07-08 | 2012-11-14 | 비비씨 주식회사 | Toothbrush having core-shell structure and method for preparing the same |
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2015
- 2015-12-11 KR KR1020150176834A patent/KR101775623B1/en active IP Right Grant
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008086683A (en) | 2006-10-05 | 2008-04-17 | Toray Monofilament Co Ltd | Bristle material for brush, method for manufacturing the same, and brush |
| KR101201517B1 (en) | 2011-07-08 | 2012-11-14 | 비비씨 주식회사 | Toothbrush having core-shell structure and method for preparing the same |
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| Publication number | Publication date |
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| KR20170069520A (en) | 2017-06-21 |
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