CN116427053A - Brush wire, brush wire bundle, and preparation method and application thereof - Google Patents
Brush wire, brush wire bundle, and preparation method and application thereof Download PDFInfo
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- CN116427053A CN116427053A CN202310427243.2A CN202310427243A CN116427053A CN 116427053 A CN116427053 A CN 116427053A CN 202310427243 A CN202310427243 A CN 202310427243A CN 116427053 A CN116427053 A CN 116427053A
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- brush
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- 238000002360 preparation method Methods 0.000 title claims abstract description 60
- 229920006346 thermoplastic polyester elastomer Polymers 0.000 claims abstract description 61
- 239000002994 raw material Substances 0.000 claims abstract description 55
- 238000000034 method Methods 0.000 claims abstract description 39
- 230000008569 process Effects 0.000 claims abstract description 19
- 229920001225 polyester resin Polymers 0.000 claims abstract description 14
- 239000004645 polyester resin Substances 0.000 claims abstract description 14
- 239000004970 Chain extender Substances 0.000 claims abstract description 9
- 238000009987 spinning Methods 0.000 claims description 19
- 238000001816 cooling Methods 0.000 claims description 14
- 238000001035 drying Methods 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 11
- 238000002844 melting Methods 0.000 claims description 10
- 230000008018 melting Effects 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 9
- 238000007493 shaping process Methods 0.000 claims description 8
- 238000005452 bending Methods 0.000 abstract description 17
- 238000004140 cleaning Methods 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 10
- 230000000052 comparative effect Effects 0.000 description 21
- 210000004209 hair Anatomy 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 9
- 239000000203 mixture Substances 0.000 description 9
- 239000000463 material Substances 0.000 description 8
- 238000012360 testing method Methods 0.000 description 6
- 239000000498 cooling water Substances 0.000 description 5
- 238000013461 design Methods 0.000 description 5
- 239000008041 oiling agent Substances 0.000 description 5
- 239000012768 molten material Substances 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 229920000728 polyester Polymers 0.000 description 4
- 125000003158 alcohol group Chemical group 0.000 description 3
- 229920002725 thermoplastic elastomer Polymers 0.000 description 3
- 229940034610 toothpaste Drugs 0.000 description 3
- 239000000606 toothpaste Substances 0.000 description 3
- 208000006558 Dental Calculus Diseases 0.000 description 2
- 239000004721 Polyphenylene oxide Substances 0.000 description 2
- 239000004433 Thermoplastic polyurethane Substances 0.000 description 2
- 206010044029 Tooth deposit Diseases 0.000 description 2
- 239000003082 abrasive agent Substances 0.000 description 2
- 229920001400 block copolymer Polymers 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229920000570 polyether Polymers 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 1
- JXLYSJRDGCGARV-WWYNWVTFSA-N Vinblastine Natural products O=C(O[C@H]1[C@](O)(C(=O)OC)[C@@H]2N(C)c3c(cc(c(OC)c3)[C@]3(C(=O)OC)c4[nH]c5c(c4CCN4C[C@](O)(CC)C[C@H](C3)C4)cccc5)[C@@]32[C@H]2[C@@]1(CC)C=CCN2CC3)C JXLYSJRDGCGARV-WWYNWVTFSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 230000000366 juvenile effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000012860 organic pigment Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 208000028169 periodontal disease Diseases 0.000 description 1
- 201000001245 periodontitis Diseases 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- -1 polyethylene terephthalate Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000007788 roughening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229920001059 synthetic polymer Polymers 0.000 description 1
- 238000005809 transesterification reaction Methods 0.000 description 1
- 229960003048 vinblastine Drugs 0.000 description 1
- JXLYSJRDGCGARV-XQKSVPLYSA-N vincaleukoblastine Chemical compound C([C@@H](C[C@]1(C(=O)OC)C=2C(=CC3=C([C@]45[C@H]([C@@]([C@H](OC(C)=O)[C@]6(CC)C=CCN([C@H]56)CC4)(O)C(=O)OC)N3C)C=2)OC)C[C@@](C2)(O)CC)N2CCC2=C1NC1=CC=CC=C21 JXLYSJRDGCGARV-XQKSVPLYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/88—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds
- D01F6/92—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of polyesters
-
- 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
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
- A61C17/16—Power-driven cleaning or polishing devices
- A61C17/22—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
- D01D5/098—Melt spinning methods with simultaneous stretching
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/04—Pigments
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Dentistry (AREA)
- Mechanical Engineering (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Brushes (AREA)
Abstract
The invention provides a brush wire, a brush wire bundle, a preparation method and application thereof. The brush filaments are prepared from the following raw materials: modifying TPEE; the preparation raw materials of the modified TPEE comprise the following components in parts by weight: 100 parts of TPEE, 1-5 parts of polyester resin and 1-3 parts of chain extender. The brush filaments with smaller diameter, proper hardness and proper bending rate are prepared by using the modified TPEE and matching with a filament drawing process, so that the prepared toothbrush has better cleaning effect, is not easy to fry, and has longer service life.
Description
Technical Field
The invention belongs to the technical field of toothbrush materials, and particularly relates to a brush wire, a brush wire bundle, a preparation method and application thereof.
Background
Toothbrushes are an indispensable daily product in people's lives. With the continuous improvement of living standard, consumers are increasingly concerned about the cleaning and health care effects of toothbrushes.
CN1813611a discloses a pointed toothbrush, in particular to a pointed toothbrush which is obtained by implanting pointed brush filaments into a specially designed brush head and mechanically grinding, specifically, a monofilament bundle spun by a synthetic polymer material is pre-packaged by a plastic winding film, then cut into monofilament cakes with proper length, the pointed brush filaments are obtained after chemical corrosion, and the pointed brush filaments are implanted into the specially designed brush head by a bristle implanting machine, wherein the brush head is designed as follows: the size of the hole diameter of the toothbrush head plate of the adult toothbrush is phi 1.6 mm-phi 2.0mm, the number of the hole is not more than 48, the wire diameter of the tip brush wire base material part is phi 0.18 mm-phi 0.25mm, the interval between the longitudinal plate hole of the toothbrush head and the hole is not more than 1.2mm, the size of the hole diameter of the toothbrush head plate of the juvenile toothbrush is phi 1.6 mm-phi 2.0mm, the number of the hole is not more than 38, the wire diameter of the tip brush wire base material part is phi 0.18 mm-phi 0.22mm, and the interval between the longitudinal plate hole of the toothbrush head and the hole is not more than 1.2mm. According to the technical scheme, the specially designed toothbrush head is used for effectively increasing the contact area between the pointed brush filaments and teeth, improving the flexibility and softness of the bristles, effectively removing accumulated dental calculus which is difficult to remove at the joint part between the teeth and the gums, improving the capacity of the pointed toothbrush for removing dental calculus, and playing a role in massaging and health care on the gums, and effectively preventing periodontal disease and dental caries, but the preparation method of the brush filaments provided by the technical scheme is complex.
CN107744250a discloses a toothbrush filament and an electric toothbrush head comprising the same. The toothbrush wire comprises a toothbrush wire body and abrasive material particles, wherein the abrasive material particles are arranged on the outer surface of the toothbrush wire body. The electric toothbrush head comprises a toothbrush handle part and a bristle part arranged at one end of the toothbrush handle part, wherein the bristle part is provided with a toothbrush wire. The toothbrush wire and the electric toothbrush head provided by the technical scheme can finish tooth cleaning within 0.5-2 hours, can effectively and quickly clean teeth, are high in efficiency, can prevent or slow down periodontitis, are convenient and effective to use, and have remarkable tooth cleaning effect, but the toothbrush wire is easy to fry hair.
The bending rate of the brush filaments of the toothbrush is a technical index for influencing the bristle frying of the brush filaments. The conventional PA (polyamide) or PET (polyethylene terephthalate) brush filaments are basically made of hard materials, the shore hardness is about 95 degrees, the harder the materials are, the average bending rate of the brush filaments can only wander between 60% and 70% after the brush filaments are made, the brush filaments can be fried by repeated friction with teeth for cleaning and long-term fatigue bending deformation, even individual users can use excessive force or abnormal operations such as biting during tooth brushing, and the time for frying the brush filaments can be increased. Even if the brush hair is used for less than one week, the brush hair is fried and cannot be recovered. The unconventional bristles are made of elastic TPE (thermoplastic elastomer), TPU (thermoplastic polyurethane) and other materials, and the elastic TPE is used for cleaning, so that the Shore hardness is about 70, the bending rate can exceed 80 percent, but the conventional bristles are molded by adopting a die, and the diameter is large.
Therefore, how to provide a toothbrush filament with moderate hardness and larger bending rate and difficult to fry becomes a technical problem to be solved at present.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a brush wire, a brush wire bundle, a preparation method and application thereof. According to the invention, through the design of the raw materials for preparing the brush filaments, the modified TPEE is further used, and meanwhile, the brush filaments with smaller diameter, proper hardness and proper bending rate are prepared through a filament drawing process, so that the prepared toothbrush has a better cleaning effect, is not easy to fry, and has a longer service life.
To achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the present invention provides a brush filament, the brush filament comprising: modifying TPEE;
the preparation raw materials of the modified TPEE comprise the following components in parts by weight:
100 parts of TPEE, 1-5 parts of polyester resin and 1-3 parts of chain extender.
According to the invention, through the design of the brush wire preparation raw material, the use of modified TPEE is further carried out, and meanwhile, the brush wire with smaller diameter, proper hardness and proper bending rate is prepared by further designing the preparation raw material of TPEE, so that the prepared toothbrush has a better cleaning effect, is not easy to fry, and has a longer service life.
In the invention, the content of the polyester resin in the preparation raw material of the modified TPEE is controlled within a specific range, and the prepared modified TPEE has proper hardness, so that the prepared brush filaments have proper hardness and proper bending rate. If the content of polyester resin in the preparation raw material of the modified TPEE is too small, the hardness of the brush filaments obtained by the preparation is too small and the bending rate is too large because the Shore hardness of the TPEE is relatively low, the hardness of the brush filaments obtained by the preparation is relatively soft, and the cleaning effect of the toothbrush obtained by the preparation is relatively poor; if the polyester resin content in the preparation raw material of the modified TPEE is too much, the hardness of the prepared brush filaments is too high, and the prepared brush filaments are hard, easy to fry and short in service life.
In the present invention, TPEE is a block copolymer containing polyester hard segments and polyether soft segments.
In the invention, the weight parts of the polyester resin in the preparation raw materials of the modified TPEE can be 1 part, 1.5 parts, 2 parts, 2.5 parts, 3 parts, 3.5 parts, 4 parts, 4.5 parts or 5 parts, etc.
The weight parts of the chain extender in the preparation raw materials of the modified TPEE can be 1 part, 1.5 parts, 2 parts, 2.5 parts or 3 parts, etc.
In the present invention, TPEE is a block copolymer comprising a polyester hard segment and a polyether soft segment. The TPEE source is not limited in any particular way, and the TPEE can be obtained through purchase or self-made.
Exemplary methods of preparing the TPEE include, but are not limited to:
first step, transesterification reaction
Second step, melt polycondensation
The preparation method of the modified TPEE comprises the following steps:
uniformly mixing the preparation raw materials of the modified TPEE, and dynamically blending the materials by double screws at 210-220 ℃ for 6-8 min to obtain the modified TPEE.
The following is a preferred technical scheme of the present invention, but not a limitation of the technical scheme provided by the present invention, and the following preferred technical scheme can better achieve and achieve the objects and advantages of the present invention.
As a preferable embodiment of the present invention, the weight average molecular weight of the TPEE is 800 to 4000g/mol, for example, 800g/mol, 1000g/mol, 1200g/mol, 1500g/mol, 1800g/mol, 2000g/mol, 2300g/mol, 2500g/mol, 2700g/mol, 3000g/mol, 3300g/mol, 3600g/mol, 4000g/mol, etc.
Preferably, the melting temperature of the TPEE is 200 to 230 ℃, for example, 200 ℃, 205 ℃, 210 ℃, 215 ℃, 220 ℃, 225 ℃, 230 ℃, or the like.
Preferably, the shore hardness of TPEE is not less than 70D (for example, 70D, 72D, 74D, 76D, 78D, 80D, 81D, 83D, or 85D, etc.), and more preferably 70 to 85D.
Preferably, the weight average molecular weight of the polyester resin is 1200 to 6000g/mol, and for example, 1200g/mol, 1500g/mol, 2000g/mol, 2500g/mol, 3000g/mol, 3500g/mol, 4000g/mol, 4500g/mol, 5000g/mol, 5500g/mol, 6000g/mol, or the like may be used.
The polyester resin preferably has a shore hardness of 80D to 95D, and may be 80D, 82D, 84D, 86D, 88D, 90D, 91D, 93D, 95D, or the like, for example.
The specific choice of the polyester resin is not particularly limited, and the polyester resin commonly used in the art may satisfy the above conditions.
Preferably, the chain extender is an alcohol chain extender.
The specific choice of the alcohol chain extender is not particularly limited, and any alcohol chain extender commonly used in the art is applicable.
As a preferable technical scheme of the invention, the raw materials for preparing the brush filaments comprise toner,
preferably, the raw materials for preparing the brush filaments comprise the following components in parts by weight: 90-100 parts of modified TPEE and 1-3 parts of toner.
In the invention, the mass parts of the modified TPEE in the raw materials for preparing the brush filaments can be 90 parts, 91 parts, 92 parts, 93 parts, 94 parts, 95 parts, 96 parts, 97 parts, 98 parts, 99 parts or 100 parts, etc.
The mass part of the dispersing agent in the raw materials for preparing the brush filaments can be 1 part, 1.2 parts, 1.4 parts, 1.6 parts, 1.8 parts, 2 parts, 2.2 parts, 2.4 parts, 2.6 parts, 2.8 parts or 3 parts and the like.
Preferably, the raw materials for preparing the brush filaments further comprise 1-3 parts by mass of toner (for example, 1 part, 1.2 parts, 1.4 parts, 1.6 parts, 1.8 parts, 2 parts, 2.2 parts, 2.4 parts, 2.6 parts, 2.8 parts or 3 parts, etc.).
The specific choice of toner in the present invention is not particularly limited, and any toner commonly used in the art may be used.
In a preferred embodiment of the present invention, the brush filaments have a shore hardness of 75D to 85D, and may be, for example, 75D, 76D, 77D, 78D, 79D, 80D, 81D, 82D, 83D, 84D, 85D, or the like.
Preferably, the diameter of the brush filaments is less than or equal to 7mil (for example, 4mil, 4.2mil, 4.6mil, 5mil, 5.2mil, 5.5mil, 5.7mil, 6mil, 6.3mil, 6.5mil, 6.8mil or 7mil, etc.), and more preferably 4 to 7mil.
In a second aspect, the present invention provides a brush filament bundle comprising brush filaments according to the first aspect.
In a third aspect, the present invention provides a method for preparing a brush filament bundle according to the second aspect, the method comprising the steps of:
and uniformly mixing the preparation raw materials of the brush filaments, melting, spinning and cooling to obtain the brush filament bundles.
According to the invention, the brush silk bundle comprising brush silk with the diameter less than or equal to 7mil is prepared by a silk drawing process, so that the advantages of smaller hardness of brush silk material and higher bending rate are maintained; the problem of overlarge brush wire diameter after the traditional die is formed is also solved. Under the condition of unchanged cleaning effect, the toothbrush which is not easy to fry and has longer service life is prepared.
As a preferable technical scheme of the invention, the preparation raw materials of the brush filaments are uniformly mixed, and the preparation method further comprises the pretreatment process: drying the raw materials for preparing the brush filaments.
Preferably, the drying method is to dry the raw materials for preparing the brush filaments in a dryer.
Preferably, the drying temperature is 90 to 120 ℃, and may be 90 ℃, 93 ℃, 95 ℃, 97 ℃, 100 ℃, 102 ℃, 105 ℃, 108 ℃, 110 ℃, 111 ℃, 114 ℃, 117 ℃, 120 ℃ or the like, for example.
Preferably, the drying time is 3 to 5 hours, for example, 3 hours, 3.5 hours, 4 hours, 4.5 hours, 5 hours, or the like.
Preferably, the water content of the raw material for preparing the brush filaments is not more than 0.03%, for example, 0.01%, 0.012%, 0.015%, 0.018%, 0.02%, 0.022%, 0.025%, 0.027% or 0.03%, etc. after the raw material for preparing the brush filaments is dried.
As a preferable embodiment of the present invention, the melting temperature is 200 to 250℃and may be 200℃205℃210℃215℃220℃225℃230℃235℃240℃245℃250℃or the like.
Preferably, the melting method is as follows: the raw materials are placed in an extruder and heated to melt.
Preferably, the spinning method comprises spinning through a spinneret plate using a spinning machine;
the temperature of the spinning machine is preferably set to 200 to 250 ℃, and may be 200 ℃, 205 ℃, 210 ℃, 215 ℃, 220 ℃, 225 ℃, 230 ℃, 235 ℃, 240 ℃, 245 ℃, 250 ℃, or the like.
Preferably, the cooling method is as follows: cooling and solidifying through a cooling water tank.
Preferably, the cooling temperature is 5 to 10 ℃, for example, 5 ℃, 6 ℃, 7 ℃, 8 ℃, 9 ℃, 10 ℃ or the like.
As a preferable technical scheme of the invention, the cooling further comprises a post-treatment process: drafting, oiling, shaping and filament collecting.
Preferably, the method of drafting comprises: drawing by a drawing machine, and heating by an oven in the drawing process.
Preferably, the heating temperature is 180 to 220 ℃, and may be 180 ℃, 185 ℃, 190 ℃, 195 ℃, 200 ℃, 205 ℃, 210 ℃, 215 ℃, 210 ℃ or the like, for example.
Preferably, the draft is 5 to 8 times, for example, 5 times, 5.5 times, 6 times, 6.5 times, 7 times, 7.5 times, 8 times, or the like.
Preferably, the oiling method comprises the following steps: oiling the drawn brush silk bundles by oiling agents in an oil groove;
in the present invention, the specific choice of the oil agent is not particularly limited, and the oil agent commonly used in the art is suitable.
Preferably, the temperature of the shaping is 230 to 260 ℃, and may be 230 ℃, 233 ℃, 235 ℃, 240 ℃, 242 ℃, 246 ℃, 250 ℃, 252 ℃, 255 ℃, 257 ℃, 260 ℃ or the like, for example.
Preferably, the method for collecting the silk comprises the following steps: the brush silk bundles are collected into silk bundles with the diameter of 50mm by a silk collecting machine, and are sleeved with a glue bag after being combed, so that the brush silk bundles are convenient to transport and store.
In the invention, the preparation method of the brush filament bundles specifically comprises the following steps:
(1) Drying the raw materials for preparing the brush filaments in a dryer for 3-5 hours at the temperature of 90-120 ℃ to ensure that the water content is less than or equal to 0.03%;
uniformly mixing the dried brush yarn preparation raw materials, placing the mixture into an extruder to be melted at 200-250 ℃, using a spinning machine to spin through a spinneret plate, and cooling and solidifying the mixture at 5-10 ℃ through a cooling water tank to obtain filament bundles with the diameter less than or equal to 7mil brush yarns, wherein the set temperature of the spinning machine is 200-250 ℃;
(2) Drawing the tows obtained in the step (1) by a drawing machine for 5-8 times, heating the tows in an oven at 180-220 ℃, oiling the drawn tows by oiling agents in an oil tank, shaping and collecting the tows at 230-260 ℃ to obtain the brush tows.
In a fourth aspect, the present invention provides a toothbrush comprising brush filaments as described in the first aspect or brush filament bundles as described in the second aspect.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, through the design of the raw materials for preparing the brush filaments, the modified TPEE is further used, and meanwhile, the brush filaments with smaller diameter, proper hardness and proper bending rate are prepared through a filament drawing process, so that the prepared toothbrush has a better cleaning effect, is not easy to fry, and has a longer service life.
Detailed Description
To facilitate understanding of the present invention, examples are set forth below. It will be apparent to those skilled in the art that the examples are merely to aid in understanding the invention and are not to be construed as a specific limitation thereof.
The sources of some of the components in the preparation examples, comparative preparation examples, and examples and comparative examples are as follows:
TPEE: dissmann, EL740;
polyester resin: vinblastine PBT pure resin 1100;
chain extender: zhangjinggang Jinqiu polyurethane Co., ltd;
toner: CLARIANT organic pigment.
Preparation examples 1-3 and comparative preparation examples 1-2
Preparation examples 1-3 and comparative preparation examples 1-2, respectively, provided a modified TPEE prepared from the raw materials shown in table 1 below, the contents of the components in table 1 being in parts by weight;
the preparation method of the modified TPEE comprises the following steps:
and uniformly mixing the preparation raw materials of the modified TPEE, and carrying out blending modification for 6min at 220 ℃ to obtain the modified TPEE.
TABLE 1
Example 1
The embodiment provides a brush silk bundle and a preparation method thereof, wherein the brush silk bundle consists of brush silk, and the preparation raw materials of the brush silk comprise the following components in percentage by mass: 95 parts of modified TPEE and 2 parts of toner provided in preparation example 1;
the preparation method of the brush filament bundles comprises the following steps:
(1) Drying the raw materials for preparing the brush filaments in a dryer for 4 hours at 100 ℃ to ensure that the water content is less than or equal to 0.03%;
uniformly mixing the dried brush yarn preparation raw materials, putting the mixture into an extruder to be melted at 220 ℃, using a spinning machine to spin through a spinneret plate, and cooling and solidifying the mixture at 5-10 ℃ through a cooling water tank to obtain filament bundles composed of brush yarns with the diameter of 5mil, wherein the set temperature of the spinning machine is 220 ℃;
(2) Drawing the filament bundle obtained in the step (1) by a drawing machine for 6 times, heating the filament bundle at 200 ℃ in an oven in the drawing process, oiling the drawn filament bundle by an oiling agent in an oil tank, shaping at 240 ℃ and collecting the filaments to obtain the brush filament bundle.
Example 2
The embodiment provides a brush yarn and a preparation method thereof, wherein a brush yarn bundle consists of brush yarns, and the preparation raw materials of the brush yarns comprise the following components in percentage by mass: 90 parts of modified TPEE and 1 part of toner provided in preparation example 1;
the preparation method of the brush filament bundle specifically comprises the following steps:
(1) Drying the raw materials for preparing the brush filaments in a dryer for 5 hours at 90 ℃ to ensure that the water content is less than or equal to 0.03%;
uniformly mixing the dried brush yarn preparation raw materials, putting the mixture into an extruder to be melted at 230 ℃, using a spinning machine, spinning the mixture through a spinneret plate, and cooling and solidifying the mixture through a cooling water tank at 5-10 ℃ to obtain a filament yarn bundle consisting of brush yarns with the diameter of 7mil, wherein the set temperature of the spinning machine is 250 ℃;
(2) Drawing the filament bundle obtained in the step (1) by a drawing machine for 8 times, heating the filament bundle at 220 ℃ in an oven in the drawing process, oiling the drawn filament bundle by an oiling agent in an oil tank, shaping at 230 ℃ and collecting the filaments to obtain the brush filaments.
Example 3
The embodiment provides a brush yarn and a preparation method thereof, wherein a brush yarn bundle consists of brush yarns, and the preparation raw materials of the brush yarns comprise the following components in percentage by mass: 100 parts of modified TPEE and 3 parts of toner provided in preparation example 2;
the preparation method of the brush filament bundle specifically comprises the following steps:
(1) Drying the raw materials for preparing the brush filaments in a dryer for 3 hours at 120 ℃ to ensure that the water content is less than or equal to 0.03%;
uniformly mixing the dried brush yarn preparation raw materials, putting the mixture into an extruder to be melted at 220 ℃, using a spinning machine to spin through a spinneret plate, and cooling and solidifying the mixture at 5-10 ℃ through a cooling water tank to obtain a filament yarn bundle consisting of brush yarns with the diameter of 4mil, wherein the set temperature of the spinning machine is 200 ℃;
(2) Drawing the filament bundle obtained in the step (1) by a drawing machine for 5 times, heating the filament bundle at 180 ℃ in an oven in the drawing process, oiling the drawn filament bundle by an oiling agent in an oil tank, shaping at 230 ℃ and collecting the filaments to obtain the brush filament bundle.
Example 4
This example provides a brush tow and a method for producing the same, differing from example 1 in that the modified TPEE provided in production example 1 used in example 1 is replaced with the modified TPEE provided in production example 2, and other conditions are the same as in example 1.
Example 5
This example provides a brush tow and a method for producing the same, differing from example 1 in that the modified TPEE provided in production example 1 used in example 1 is replaced with the modified TPEE provided in production example 3, and other conditions are the same as in example 1.
Comparative example 1
This comparative example provides a brush wire and a method for manufacturing the same, differing from example 1 in that the modified TPEE provided in preparation example 1 used in example 1 is replaced with the modified TPEE provided in comparative preparation example 1, and other conditions are the same as in example 1.
Comparative example 2
This comparative example provides a brush wire and a method for manufacturing the same, differing from example 1 in that the modified TPEE provided in preparation example 1 used in example 1 is replaced with the modified TPEE provided in comparative preparation example 2, except that the conditions are the same as in example 1.
Comparative example 3
This comparative example provides a brush wire and a method for manufacturing the same, differing from example 1 in that the modified TPEE provided in preparation example 1 used in example 1 is replaced with unmodified TPEE, and other conditions are the same as in example 1.
Application examples 1 to 5
Application examples 1-5 a toothbrush prepared by using the brush filament bundles provided in examples 1-5 was provided in order, and the preparation method of the toothbrush was as follows:
(1) Planting hair: cutting brush filament bundles to be of proper length according to the length of the visible light of the toothbrush, and placing the cut brush filament bundles into a bristle box of a bristle planting machine for bristle planting, wherein the length is generally about 22 MM;
(2) Fly: removing excessive hair length exceeding visible light after hair planting;
(3) Roughening: grinding the end face of the brush wire to remove sharp edges and sharp corners, so that the end face of the brush wire is smooth to prevent gum damage, and the toothbrush is obtained.
Application example 6
This application example 6 provides a toothbrush comprising a brush filament bundle prepared by molding in a mold and a method for preparing the same, the toothbrush comprising:
(1) Drying the raw materials for preparing the brush filaments (the same as in example 1) in a dryer for 1h at 80 ℃ to ensure that the water content is less than or equal to 0.03%;
putting the dried preparation raw materials into a plastic injection cylinder, and melting into a liquid state at a high temperature of 180 ℃ to obtain a molten material;
(2) Pushing the molten material obtained in the step (1) into a mold by virtue of a screw rod, gradually filling the mold with the molten material, cooling, and cooling and solidifying the molten material in the mold to obtain a plastic product with a brush wire shape;
(3) And opening the mold, ejecting, leaving the cooled plastic product on the mold, pushing the top plate of the injection molding machine against the mold push plate, and then moving the push plate along with the ejector pin to obtain the toothbrush with brush filaments.
Comparative examples 1 to 3 were used
Application comparative examples 1 to 3 each provided a toothbrush, differing from application example 1 in that the brush filaments strands provided in example 1 were replaced with brush filaments provided in comparative examples 1 to 3 in this order.
The properties of the brush filaments in the brush filament bundles provided in the above examples and comparative examples and the brush filaments prepared by molding in application example 6, and the properties of the toothbrushes prepared from the brush filament bundles provided in the above examples and comparative examples were tested by the following specific test methods:
diameter: testing using calipers;
shore hardness: ISO 868:2003;
bending rate: GB/T40362-2021;
service life is as follows: the test method comprises the following steps: (1) Preparing enough toothpaste water before testing, pouring the toothpaste water onto a water tank, and enabling a dropper connected with the water tank to be in contact with tooth pulp on a dental model so that the toothpaste water continuously flows into tooth gaps for a long time; (2) The brush head is arranged on the main body, and is arranged on the wear-resistant test fixture for carrying out a 200g startup test, the speed is set to 40 times per minute, the back and forth wiping is carried out for 1 time, and the test is 40000 times; (3) simulate use for 3 months (90 days);
the brush hair can not be subjected to moderate hair frying in the test process; moderately frying wool: the fried hair cannot exceed 30% of the hair bundles; .
The results of the performance test of the brush filaments provided in the above examples and comparative examples are shown in table 2 below:
TABLE 2
As can be seen from the table, the brush filaments with smaller diameter, proper hardness and proper bending rate are prepared by the design of the raw materials for preparing the brush filaments and the use of the modified TPEE and the filament drawing process, so that the prepared toothbrush has better cleaning effect, is not easy to fry, and has longer service life.
Compared with example 1, if the polyester content in the preparation raw material of the modified TPEE is too low (comparative example 1), the hardness of the prepared brush filaments is too low and the bending rate is too high; if the polyester content in the preparation raw materials of the modified TPEE is too high (comparative example 2), the hardness of the prepared brush filaments is too high, and the prepared toothbrush is easy to fry and has shorter service life.
Compared with example 1, if the brush filament bundle is prepared by a mold forming method (application example 6), the diameter of the prepared brush filaments is too large; if unmodified TPEE is used to prepare the brush filaments (comparative example 3), the hardness of the prepared brush filaments is too small and the bending rate is too large.
In summary, according to the invention, through the design of the raw materials for preparing the brush filaments, the modified TPEE is further used, and meanwhile, the brush filaments with smaller diameter, proper hardness and proper bending rate are prepared through a filament drawing process, so that the prepared toothbrush has a better cleaning effect, is not easy to fry, and has a longer service life.
The applicant states that the detailed process flow of the present invention is illustrated by the above examples, but the present invention is not limited to the above detailed process flow, i.e. it does not mean that the present invention must be implemented depending on the above detailed process flow. It should be apparent to those skilled in the art that any modification of the present invention, equivalent substitution of raw materials for the product of the present invention, addition of auxiliary components, selection of specific modes, etc., falls within the scope of the present invention and the scope of disclosure.
Claims (10)
1. The brush wire is characterized by comprising the following raw materials: modifying TPEE;
the preparation raw materials of the modified TPEE comprise the following components in parts by weight:
100 parts of TPEE, 1-5 parts of polyester resin and 1-3 parts of chain extender.
2. The brush wire according to claim 1, wherein the TPEE has a weight average molecular weight of 800 to 4000g/mol;
preferably, the melting temperature of the TPEE is 200-230 ℃;
preferably, the Shore hardness of the TPEE is more than or equal to 70D, and further preferably 70-85D;
preferably, the weight average molecular weight of the polyester resin is 1200-6000 g/mol;
preferably, the Shore hardness of the polyester resin is 80D-95D.
3. The brush wire according to claim 1 or 2, wherein the raw materials for preparing the brush wire comprise toner;
preferably, the raw materials for preparing the brush filaments comprise the following components in parts by weight: 90-100 parts of modified TPEE and 1-3 parts of toner.
4. A brush wire according to any one of claims 1-3, wherein the brush wire has a shore hardness of 75D to 85D;
preferably, the diameter of the brush filaments is less than or equal to 7mil, and more preferably 4 to 7mil.
5. A brush tow comprising the brush filaments of any one of claims 1-4.
6. A method of preparing the brush tow of claim 5, comprising the steps of:
and uniformly mixing the preparation raw materials of the brush filaments, melting, spinning and cooling to obtain the brush filament bundles.
7. The method according to claim 6, wherein the preparation method further comprises the pretreatment process before uniformly mixing the raw materials for preparing the brush filaments: drying the raw materials for preparing the brush filaments;
preferably, the drying temperature is 90-120 ℃;
preferably, the drying time is 3-5 hours;
preferably, after the raw materials for preparing the brush filaments are dried, the water content of the raw materials for preparing the brush filaments is less than or equal to 0.03 percent.
8. The method of claim 6 or 7, wherein the melting temperature is 200-250 ℃;
preferably, the melting method is as follows: placing the raw materials into an extruder for heating and melting;
preferably, the spinning method comprises spinning through a spinneret plate using a spinning machine;
preferably, the set temperature of the spinning machine is 200-250 ℃;
preferably, the temperature of the cooling is 5-10 ℃.
9. The method according to any one of claims 6 to 8, wherein the cooling further comprises a post-treatment process: drawing, oiling, shaping and filament collecting;
preferably, the method of drafting comprises: drawing by a drawing machine, and heating by a baking oven in the drawing process;
preferably, the heating temperature is 180-220 ℃;
preferably, the draft is 5-8 times;
preferably, the temperature of the shaping is 230-260 ℃.
10. A toothbrush comprising brush filaments according to any one of claims 1 to 4 or a brush filament bundle according to claim 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310427243.2A CN116427053A (en) | 2023-04-20 | 2023-04-20 | Brush wire, brush wire bundle, and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310427243.2A CN116427053A (en) | 2023-04-20 | 2023-04-20 | Brush wire, brush wire bundle, and preparation method and application thereof |
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| Publication Number | Publication Date |
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| CN116427053A true CN116427053A (en) | 2023-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310427243.2A Pending CN116427053A (en) | 2023-04-20 | 2023-04-20 | Brush wire, brush wire bundle, and preparation method and application thereof |
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| Country | Link |
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| CN (1) | CN116427053A (en) |
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- 2023-04-20 CN CN202310427243.2A patent/CN116427053A/en active Pending
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