CN108783875B - Toothbrush bristle and processing method thereof - Google Patents
Toothbrush bristle and processing method thereof Download PDFInfo
- Publication number
- CN108783875B CN108783875B CN201810570840.XA CN201810570840A CN108783875B CN 108783875 B CN108783875 B CN 108783875B CN 201810570840 A CN201810570840 A CN 201810570840A CN 108783875 B CN108783875 B CN 108783875B
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- Prior art keywords
- toothbrush
- toothbrush bristles
- bristles
- heat treatment
- free ends
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- 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
- A46D—MANUFACTURE OF BRUSHES
- A46D1/00—Bristles; Selection of materials for bristles
- A46D1/02—Bristles details
- A46D1/0292—Bristles having split ends
-
- 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 invention discloses a toothbrush bristle and a processing method thereof, wherein the processing method of the toothbrush bristle comprises the following steps: the toothbrush is heat treated so that the free ends of the toothbrush bristles have an irregular compound curved surface. The invention carries out heat treatment on sharp edges and corners at the free ends of the toothbrush bristles to achieve the smoothing effect, thereby avoiding damage to gums and enamel. Meanwhile, only the free ends of the toothbrush bristles are subjected to heat treatment, so that the damage to the rest parts of the toothbrush bristles and the rest parts of the toothbrush caused by the heat treatment can be avoided, and the overall quality of the toothbrush is not affected. The control of the heating process allows the free ends of the bristles to be rounded, so that all sharp corners (including the edge corners) are rounded, and the free ends with irregular compound curved surfaces are finally obtained.
Description
Technical Field
The invention relates to the field of oral cleaning, in particular to toothbrush bristles and a processing method thereof.
Background
Toothbrushes are widely and long-term used as personal daily necessities for cleaning teeth and oral cavities, and good toothbrushes can brush attachments on teeth without damaging gums or enamel, which puts high demands on the toothbrushes. Among them, the structure of the toothbrush bristles has a great influence on the quality of the toothbrush, such as the shape of the end portions of the toothbrush bristles, the hardness and flexibility of the toothbrush bristles, the material of the toothbrush bristles, and the preparation process of the toothbrush bristles. Of these, the brush bristle ends, which directly contact the toothbrush, are the most direct factors affecting the quality of the toothbrush.
Currently, the ends of untreated toothbrush bristles are often sharply angled, which can cause damage to the gums and enamel. Therefore, how to treat the sharp edges of the ends of the toothbrush bristles is in need of solution. The prior art generally adopts a complex multi-step process for treating sharp corners at the ends of toothbrush bristles, for example, patent document CN102802466A discloses that four process steps are necessary to solve the technical problem that sharp corners are often formed at the ends of toothbrush bristles, and the specific process comprises the following steps: cutting one end of the synthetic bristle strand; mechanically polishing the cut ends of the synthetic bristle tow; heat treating the polished end of the filament bundle of synthetic bristles; and causticizing the heat-treated ends of the synthetic bristle strands into a circular shape. In addition, when the toothbrush bristles are heated, the entire bristles are heated, and the rest of the toothbrush bristles and the rest of the toothbrush may be damaged.
In conclusion, the prior art has the defects of complex and tedious process, loss and pollution caused by mechanical polishing, chemical heat treatment and the like, and damage to the rest parts of the toothbrush bristles and the rest parts of the toothbrush.
Disclosure of Invention
The invention mainly aims to provide a toothbrush and a processing method of toothbrush bristles, which can solve the technical problem that the end parts of the toothbrush bristles are always provided with sharp edges and corners to damage gum and enamel, have simple process and reduce loss and pollution compared with the prior art.
The invention provides a processing method of toothbrush bristles, which comprises the following steps:
the toothbrush is heat treated so that the free ends of the toothbrush bristles have an irregular compound curved surface.
Further, the heat treatment is a local heat treatment of the free ends of the toothbrush bristles.
Further, before the step of heat-treating the toothbrush so that the free ends of the toothbrush bristles have an irregular complex curved surface, the method further comprises the following steps:
cutting the toothbrush bristles.
Further, the step of heat-treating the toothbrush so that the free ends of the toothbrush bristles have an irregular complex curved surface is preceded by the step of:
the toothbrush bristles are fixed on a toothbrush head.
Further, the heat treatment is performed by heat radiation or laser irradiation.
Further, if the toothbrush bristles are fixed on the toothbrush head, the shapes of the heat radiation source and the laser radiation source are matched with the brush surface constructed by the fixed toothbrush bristles.
Further, the heat treatment is performed under a protective gas or vacuum environment.
Further, the diameter of the toothbrush bristle is 0.1 mm-1 mm.
Further, the toothbrush bristles are oriented vertically upward or vertically downward during the heat treatment.
The present invention provides a toothbrush bristle produced by the method of processing a toothbrush bristle according to any one of the preceding claims.
According to the preparation method of the toothbrush and the toothbrush, provided by the invention, the sharp edges and corners at the free ends of the toothbrush bristles are subjected to heat treatment to achieve the smoothing effect, so that the damage to gums and enamel is avoided. Meanwhile, only the free ends of the toothbrush bristles are subjected to heat treatment, so that the damage to the rest parts of the toothbrush bristles and the rest parts of the toothbrush caused by the heat treatment can be avoided, and the overall quality of the toothbrush is not affected. The control of the heating process allows the free ends of the bristles to be rounded, so that all sharp corners (including the edge corners) are rounded, and the free ends with irregular compound curved surfaces are finally obtained.
Drawings
FIG. 1 is a schematic view showing a structure of a free end of a toothbrush bristle without being heat-treated according to an embodiment of the present invention;
FIG. 2 is a schematic view showing a structure of a free end of a toothbrush bristle subjected to heat treatment according to an embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Reference will now be made in detail to the embodiments of the present invention, and it will be understood by those skilled in the art that, unless otherwise specified, the singular forms "a", "an", "the" and "the" used herein may include the plural forms as well. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The first embodiment is as follows:
the processing method of the toothbrush bristle provided by the invention comprises the following steps:
the toothbrush is heat treated so that the free ends of the toothbrush bristles have an irregular compound curved surface.
Wherein the free ends of the toothbrush bristles having the irregular compound curved surface means that sharp corners of the free ends are rounded to form the irregular compound curved surface as shown in fig. 2, the corners including not only rough corners on the end surfaces but also corners of the end surfaces perpendicular to the toothbrush bristles.
Wherein the material of the toothbrush bristles is any suitable material including, but not limited to, resins, synthetic resins, animal hair, nylon, and the like. In this example, nylon was selected. The bristles may be heat treated by heat treating the entire bundle of bristles, by heat treating only the free ends of the bristles locally, or even by heat treating the bristles of a finished toothbrush to which the bristles have been fixed. The heat treatment mode may be any existing heating mode, or may also be a heat radiation mode, a laser radiation mode, or the like, and the present embodiment adopts an infrared heat radiation heating mode. If the heat treatment of the bristles of the finished toothbrush with the toothbrush bristles fixed is carried out, the shapes of the heat radiation source and the laser radiation source are matched with the brush surface constructed by the fixed toothbrush bristles, so that the uniformity of the heat treatment is ensured, and the finished toothbrush with the toothbrush bristles fixed can be subjected to heat treatment at high speed in large batch, wherein the shapes of the heat radiation source and the laser radiation source can be adjusted on line or off line according to the different brush surfaces of the toothbrush. The heat treatment temperature is related to the material of the toothbrush bristle, is higher than the melting point of the toothbrush bristle, more preferably higher than the burning point of the toothbrush bristle, and is carried out under a protective gas or vacuum atmosphere, wherein the protective gas is any protective gas, preferably nitrogen and inert gas. The time of the heat treatment is dependent on the material of the toothbrush bristle and the temperature of the heat treatment, and any suitable time of the heat treatment may be used to obtain an excellent smooth bristle. In the heat treatment process, the toothbrush bristles are vertically upward or downward, and the tips of the melted bristles are influenced by the gravity and the surface tension together, so that different irregular smooth curved surfaces are formed. The diameter of the bristles may be any feasible diameter, preferably 0.1mm to 1mm, more preferably 0.1 mm.
Before the step of smoothing the free ends of the toothbrush bristles by heat treatment, the method may further include a step of cutting the toothbrush bristles; also, a polishing step and a step of treating the toothbrush bristles with chemicals are not required in the manufacturing process.
As shown in FIG. 1, the untreated toothbrush bristles of this embodiment have rough and sharp edges at their free ends, and thus easily damage gums and enamel during oral cleaning. The toothbrush bristles having free ends as shown in fig. 1, which were treated in this example, had been fixed to a toothbrush, were subjected to a heat treatment. A localized heat treatment is employed and only heats the free ends of the toothbrush bristles without affecting the quality of the rest of the toothbrush bristles and other parts of the toothbrush. The material of the toothbrush bristle is nylon. The diameter of the toothbrush bristle is 0.1mm to 1mm, preferably 0.1 mm. The heat treatment method is infrared heating. The shape of the infrared heat source is matched with the brush surface constructed by the fixed toothbrush bristles (for example, the shape of the brush surface of the infrared heat source is the same), so that the free ends of all the bristles can be subjected to the same heat treatment without affecting the quality of other parts of the toothbrush bristles and other parts of the toothbrush. The heat treatment temperature is 600 degrees celsius or higher, preferably 650 degrees celsius or higher, and more preferably 700 degrees celsius in this embodiment. The heat treatment time is 0.1 to 2s, preferably 0.1 to 1s, and more preferably 0.1s in this example. The heat treatment protective gas is nitrogen or inert gas. The toothbrush bristles are oriented vertically upward.
As shown in FIG. 2, the free ends of the heat-treated toothbrush bristles of this embodiment are rounded, and the rounding is directly obtained by the heat-treatment process without adding other processes (e.g., polishing process, causticizing process). As shown in fig. 2, in the heat treatment process, the melted substance tends to become a spherical surface due to the influence of surface tension, the free end of the bristle having sharp corners is melted by heat, all sharp corners (including the edge corners) are melted and rounded first, and the free end of the bristle can be rounded by controlling the heating process, so that all sharp corners (including the edge corners) are rounded, and the free end having an irregular compound curved surface is finally obtained.
Example two:
compared with the first embodiment, the present embodiment provides a method for processing toothbrush bristles, which is characterized in that:
the toothbrush bristles treated in this example were not fixed to a toothbrush. The whole-bristle heat treatment (the heat treatment for the whole bundle of toothbrush bristles) is adopted. The material of the toothbrush bristle is polyolefin. The diameter of the toothbrush bristle is 0.1mm to 1mm, preferably 1 mm. The heat treatment mode adopts laser. The heat treatment temperature is 600 degrees celsius or more, and 600 degrees celsius is more preferable in this embodiment. The heat treatment time is 0.1 to 2 seconds, and 2 seconds is more preferable in this embodiment. The heat treatment protective gas is nitrogen or inert gas. The toothbrush bristles are oriented vertically downward.
Example three:
compared with the first embodiment, the present embodiment provides a method for processing toothbrush bristles, which is characterized in that:
the toothbrush bristles treated in this example have been fixed to a toothbrush. The toothbrush is subjected to heat treatment completely. The material of the toothbrush bristles is polyester. The diameter of the toothbrush bristle is 0.1mm to 1mm, preferably 0.5 mm. The heat treatment method is infrared heating. The heat treatment temperature is 600 degrees celsius or higher, preferably 650 degrees celsius or higher, and more preferably 800 degrees celsius in this embodiment. The heat treatment time is 0.1 to 2s, preferably 0.1 to 1s, and more preferably 1s in this example. The heat treatment protective gas is nitrogen or inert gas. The toothbrush bristles are oriented vertically upward.
Example four:
the present embodiment provides a toothbrush bristle, and the method for processing a toothbrush bristle provided in any one of the first to third embodiments is used.
According to the preparation method of the toothbrush and the toothbrush, provided by the invention, the sharp edges and corners at the free ends of the toothbrush bristles are subjected to heat treatment to achieve the smoothing effect, so that the damage to gums and enamel is avoided. Meanwhile, only the free ends of the toothbrush bristles are subjected to heat treatment, so that the damage to the rest parts of the toothbrush bristles and the rest parts of the toothbrush caused by the heat treatment can be avoided, and the overall quality of the toothbrush is not affected.
Compared with the prior art, the invention has the following differences and advantages:
1. although all start with cutting bristle blanks, the present invention does not require the process of mechanical polishing;
2. the invention can adopt heat radiation heating, compared with the prior art, the heat radiation heating can be more accurately controlled, thereby being capable of carrying out local heat treatment, which can not be achieved by the prior art;
3. the heating method is different, and the actual heating purpose is different, even though the prior art has a heating step, the purpose is only for the pretreatment of the subsequent process, and the heat treatment purpose of the invention is to melt the surface of the free end of the bristle and realize the rounding of the sharp edge by the action of surface tension;
4. the invention pursues the rounding of sharp edges and corners, and finally obtains the free ends of the toothbrush bristles with irregular composite curved surfaces, which is completely different from the tail ends of the toothbrush bristles in the prior art;
5. the efficiency and efficiency of the process are significantly different, the present invention can be applied to a two-step process, only removing the sharp edges of the bristles harmful to teeth and gums, the prior art has to be applied to a 4-step process (the technical solution of claim 1 of patent document CN102802466A has shown that the 4-step process is applied and there is no description that can reduce the process steps), the head of the bristle is machined to a round shape, and the mechanical polishing, the chemical heat treatment finishing, etc. are worn and contaminated during the process. Therefore, the invention not only reduces the process steps, but also does not generate loss and pollution, and also has the same technical effect of avoiding damage to gingiva and enamel.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (6)
1. A method of manufacturing toothbrush bristles, comprising: heat-treating the toothbrush bristles to provide the free ends of the toothbrush bristles with an irregular compound curved surface;
wherein the irregular composite curved surface comprises more than two smooth ends;
the free ends of the toothbrush bristles are provided with the irregular compound curved surfaces, namely sharp edges and corners of the free ends are rounded, and the edges and corners not only comprise rough edges and corners on the end surfaces, but also comprise corners between the end surfaces and the end surfaces perpendicular to the toothbrush bristles;
the heat treatment mode is heat radiation or laser irradiation, the shape of a heat radiation source or a laser irradiation source is matched with the brush surface constructed by the fixed toothbrush bristles, wherein the shapes of the heat radiation source and the laser irradiation source are adjusted on line or off line along with the difference of the brush surface of the toothbrush;
the temperature of the heat treatment is higher than the ignition point of the toothbrush bristles, when the temperature of the heat treatment is higher than the ignition point of the toothbrush bristles, the heat treatment is carried out in a protective gas or vacuum environment, and the time of the heat treatment is 0.1-1 s;
the orientation of the toothbrush bristles during the heat treatment is vertically upward or vertically downward.
2. The method of manufacturing toothbrush bristles according to claim 1, wherein the heat treatment is a local heat treatment of the free ends of the toothbrush bristles.
3. The method for manufacturing toothbrush bristles, according to claim 1, further comprising, before the step of heat-treating the toothbrush bristles to have the free ends of the toothbrush bristles having the irregular complex curved surface:
cutting the toothbrush bristles.
4. The method for manufacturing toothbrush bristles according to any one of claims 1 to 3, wherein the step of heat-treating the toothbrush bristles to have the free ends thereof having the irregular complex curved surface is preceded by the step of:
the toothbrush bristles are fixed on a toothbrush head.
5. The method of manufacturing toothbrush bristles according to any one of claims 1 to 3, wherein the toothbrush bristles have a diameter of 0.1mm to 1 mm.
6. A toothbrush bristle produced by the method for manufacturing a toothbrush bristle according to any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810570840.XA CN108783875B (en) | 2018-06-05 | 2018-06-05 | Toothbrush bristle and processing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810570840.XA CN108783875B (en) | 2018-06-05 | 2018-06-05 | Toothbrush bristle and processing method thereof |
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| Publication Number | Publication Date |
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| CN108783875A CN108783875A (en) | 2018-11-13 |
| CN108783875B true CN108783875B (en) | 2021-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810570840.XA Active CN108783875B (en) | 2018-06-05 | 2018-06-05 | Toothbrush bristle and processing method thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200981902Y (en) * | 2006-09-11 | 2007-11-28 | 上海晓邦家居用品有限公司 | Poly(trimethylene terephthalate) individual thread for producing brush and pen |
| CN102802466A (en) * | 2009-06-12 | 2012-11-28 | 克利奥有限公司 | Round toothbrush bristles and processing method thereof |
| CN105708127A (en) * | 2016-02-23 | 2016-06-29 | 无锡市兴达尼龙有限公司 | Spherical brush wire and manufacturing method thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0290873A3 (en) * | 1987-05-13 | 1989-10-04 | Kao Corporation | Toothbrush |
| CN1799450A (en) * | 2005-01-07 | 2006-07-12 | 何昕 | Toothbrush with round bead headed brush and its production process |
| CN2768550Y (en) * | 2005-01-07 | 2006-04-05 | 何昕 | Novel brushing hair toothbrush |
-
2018
- 2018-06-05 CN CN201810570840.XA patent/CN108783875B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200981902Y (en) * | 2006-09-11 | 2007-11-28 | 上海晓邦家居用品有限公司 | Poly(trimethylene terephthalate) individual thread for producing brush and pen |
| CN102802466A (en) * | 2009-06-12 | 2012-11-28 | 克利奥有限公司 | Round toothbrush bristles and processing method thereof |
| CN105708127A (en) * | 2016-02-23 | 2016-06-29 | 无锡市兴达尼龙有限公司 | Spherical brush wire and manufacturing method thereof |
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| Publication number | Publication date |
|---|---|
| CN108783875A (en) | 2018-11-13 |
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