CN112568591A - Peak grinding process for bristles of cosmetic brush - Google Patents
Peak grinding process for bristles of cosmetic brush Download PDFInfo
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- CN112568591A CN112568591A CN201910936263.6A CN201910936263A CN112568591A CN 112568591 A CN112568591 A CN 112568591A CN 201910936263 A CN201910936263 A CN 201910936263A CN 112568591 A CN112568591 A CN 112568591A
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- bristles
- peak
- alkali solution
- grinding process
- peak grinding
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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
- A46D1/05—Splitting; Pointing
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Abstract
The embodiment of the invention provides a peak grinding process for bristles of a cosmetic brush, which comprises the steps of firstly preparing an alkali solution and heating, then soaking one end of the bristles in the alkali solution at a depth of 11-16 mm, and simultaneously carrying out ultrasonic oscillation treatment.
Description
Technical Field
The invention belongs to the technical field of artificial fiber preparation, and particularly relates to a peak grinding process of a cosmetic brush bristle.
Background
The bristles of cosmetic brushes typically include goat hair, squirrel hair, wolf tail hair, horse hair, and rayon hair. The goat hair is the most common, soft and durable in texture, good in elasticity and strong in powder taking capacity, and is suitable for various powder color cosmetics such as loose powder, blush, face repair, eye shadow, eyebrow powder and the like. The squirrel hair is the most soft and smooth, the skin feel is the best, but the corresponding powder-grasping capacity is weaker and the elasticity is lacked, so the squirrel hair brush is generally used for brushing blushes and repairing the face. The yellow wolf tail hair is soft and elastic, very durable, has outstanding performance in color taking and oil resistance, but has general dyeing power, can be used as a powder dispersing brush and a cosmetic brush, and is more commonly used as a lip brush, an eye liner brush, a flaw covering brush and an eye shadow brush, and has high cost. The elasticity and the softness of the horse hair are poor, the coloring performance is good, the price is low, the horse hair is common, and the horse hair is often mixed into the brush hair made of other materials so as to reduce the cost.
At present, the artificial fiber hair material adopted by the brush hair of the cosmetic brush at home and abroad is mainly PBT (Polybutylene Terephthalate) fiber, and the PBT fiber is prepared by melt spinning of linear polymer which is obtained by esterification and polycondensation of high-purity terephthalic acid (TPA) or dimethyl Terephthalate (DMT) and 1, 4-butanediol. The PBT fiber has good physical properties, high heat resistance, low friction coefficient, fatigue resistance, hot water resistance and oil resistance, is easy to be invaded by halogenated hydrocarbon, has poor hydrolysis resistance under a strong alkali condition, is difficult to degrade, can bring pressure to the environment, has poor biocompatibility, and a small part of PBT fiber can cause skin allergy. It would therefore be desirable to be able to develop a material that is both biocompatible and naturally degradable to replace PBT fibres.
Polylactic Acid (PLA) fiber is commonly called corn fiber, and is prepared by fermenting starch raw materials such as corn, wheat, cassava, potato, beet and the like to prepare lactic Acid, polymerizing the lactic Acid to obtain Polylactic Acid, and finally spinning and forming. As a completely biodegradable and environment-friendly polyester compound, the PLA fiber can meet the requirement of sustainable development, accords with the social rules of environmental protection and resource recycling, and has wide application prospect. Meanwhile, the PLA has biocompatibility and excellent skin-friendly performance, and is suitable for being used as bristles of a cosmetic brush.
In the process of makeup, the bristles stained with the cream-like and liquid-like cosmetics must be made of artificial fibers, the bristles of the artificial fibers have stronger gripping force on the liquid-like and cream-like cosmetics, and the artificial fibers are harder and are more suitable for delineating fine parts. The fibers are classified into non-milled fibers and milled fibers according to the gross peak. The fiber texture of the non-sharpening fiber is the hardest, and the fiber is mostly used as a mascara brush and a brow brush. The Maofeng of the Maofeng fiber is slender and soft, the wool top has better elasticity than animal hair, and the Maofeng fiber does not absorb powder, is easy to clean, and is suitable for pasty color cosmetics with thick texture. In the prior art, no peak grinding process aiming at PLA fiber exists.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a cosmetic brush bristle peak grinding process which is simple in steps, easy in raw material obtaining, capable of being carried out on the existing PBT fiber peak grinding equipment and free of adding new equipment investment.
According to the first aspect of the invention, the cosmetic brush bristle peak grinding process comprises the following steps: and soaking the bristles in hot alkali solution under the ultrasonic oscillation condition.
The cosmetic brush bristle peak grinding process provided by the embodiment of the invention has the following technical effects:
the process has the advantages of simple steps, easily obtained raw materials, non-harsh production conditions, low cost and high peak grinding efficiency.
According to some embodiments of the invention, the bristles are PLA fiber bristles.
According to some embodiments of the invention, the spike milling process step comprises:
s1: preparing an alkali solution and heating;
s2: and (4) soaking one end of the bristles into the alkali solution prepared in the step S1 in a depth of 11-16 mm, and simultaneously carrying out ultrasonic oscillation treatment.
According to some embodiments of the invention, the alkali solution is 10 to 18 wt% sodium hydroxide solution.
Under the process conditions of the embodiment of the invention, the concentration of 10-18 wt% of sodium hydroxide solution is in a proper concentration range, the concentration range below the concentration range can cause the peak grinding to be difficult to effectively carry out, and the concentration range above the concentration range is easy to damage hair tips.
According to some embodiments of the invention, the heating temperature of step S1 is 92-98 ℃.
Under the process conditions of the embodiment of the invention, the temperature range of 92-98 ℃ is a proper temperature range, the temperature range below which the peak grinding is difficult to effectively proceed is easy to carry out, and the temperature range above which the hair tip is easy to damage.
According to some embodiments of the invention, the soaking time in the step S2 is 15-25 min.
Under the process conditions of the embodiment of the invention, the time range of 15-25 min is a proper time range, the time range below which the peak grinding is difficult to effectively proceed is easy to be carried out, and the time range above which the hair tip is easy to be damaged.
According to some embodiments of the present invention, the frequency of the ultrasonic vibration treatment in step S2 is 2-8 kHz.
Drawings
FIG. 1 is a schematic view showing a comparison of bristles before and after peak shaving.
Detailed Description
The following are specific examples of the present invention, and the technical solutions of the present invention will be further described with reference to the examples, but the present invention is not limited to the examples.
Example 1
The embodiment provides a peak grinding process of bristles of a cosmetic brush, which comprises the following specific steps:
s1: preparing an alkali solution and heating;
s2: one end of the bristles was immersed in the alkali solution prepared in step S1 to a depth of 11mm while being subjected to ultrasonic vibration treatment.
In the above process, the bristles are PLA fiber bristles.
The alkali solution is a 10 wt% sodium hydroxide solution.
The temperature of the heating in step S1 was 92 ℃.
The soaking time of the step S2 is 15 min.
The frequency of the ultrasonic oscillation processing of step S2 is 2 kHz.
The process has the advantages of simple steps, easily obtained raw materials, low concentration of alkali solution used for peak grinding, low temperature required for peak grinding treatment, short time, non-harsh production conditions, low cost and high peak grinding efficiency.
Example 2
The embodiment provides a peak grinding process of bristles of a cosmetic brush, which comprises the following specific steps:
s1: preparing an alkali solution and heating;
s2: one end of the bristles was immersed in the alkali solution prepared in step S1 at a depth of 16mm while being subjected to ultrasonic vibration treatment.
In the above process, the bristles are PLA fiber bristles.
The alkaline solution is 18 wt% sodium hydroxide solution.
The heating temperature in step S1 was 98 ℃.
The soaking time of the step S2 is 25 min.
The frequency of the ultrasonic oscillation processing of step S2 is 8 kHz.
The process has the advantages of simple steps, easily obtained raw materials, low concentration of alkali solution used for peak grinding, low temperature required for peak grinding treatment, short time, non-harsh production conditions, low cost and high peak grinding efficiency.
Example 3
The embodiment provides a peak grinding process of bristles of a cosmetic brush, which comprises the following specific steps:
s1: preparing an alkali solution and heating;
s2: one end of the bristles was immersed in the alkali solution prepared in step S1 at a depth of 13mm while being subjected to ultrasonic vibration treatment.
In the above process, the bristles are PLA fiber bristles.
The alkaline solution was a 14 wt% sodium hydroxide solution.
The temperature of heating in step S1 was 95 ℃.
The soaking time of the step S2 is 20 min.
The frequency of the ultrasonic oscillation processing of step S2 is 5 kHz.
The process has the advantages of simple steps, easily obtained raw materials, low concentration of alkali solution used for peak grinding, low temperature required for peak grinding treatment, short time, non-harsh production conditions, low cost and high peak grinding efficiency.
Example 4
The peak grinding process provided by the embodiment 3 is adopted in the embodiment to carry out peak grinding treatment on the PLA fiber bristles, and the method comprises the following specific steps:
s1: preparing an alkali solution and heating;
s2: and (4) soaking one end of the bristles into the alkali solution prepared in the step S1 at the depth of 11-16 mm, and simultaneously carrying out ultrasonic oscillation treatment.
In the above process, the alkali solution is a 14 wt% sodium hydroxide solution.
The temperature of heating in step S1 was 95 ℃.
The soaking time of the step S2 is 20 min.
The frequency of the ultrasonic oscillation processing of step S2 is 5 kw.
Example of detection
In this example, the filament diameters, lengths, and the like of the bristles after the peak grinding in example 4 were measured, and the results are shown in table 1.
TABLE 1
| PLA peak grinding detection project | The result of the detection |
| 0.2mm plus or minus 0.025) | 0.198mm |
| Total length (45mm + -2 mm) | 43.2mm |
| Taper (0.5 mm diameter from the tip) | 0.08mm |
| Cone angle (°) | 4.02° |
| Taper length (mm) | 15.2mm |
| Appearance of the product | No obvious impurity point |
The bristles before and after the peak grinding treatment are shown in FIG. 1, wherein 1 in FIG. 1 is the bristles without the peak grinding treatment, and 2-5 are the bristles after the peak grinding treatment.
Claims (7)
1. The cosmetic brush bristle peak grinding process is characterized by comprising the following steps: and soaking the bristles in an alkali solution heated under the ultrasonic oscillation condition.
2. The peak shaving process according to claim 1, wherein the bristles are PLA fiber bristles.
3. The pealing process of claim 1, wherein the pealing process step comprises:
s1: preparing an alkali solution and heating;
s2: and (4) soaking one end of the bristles into the alkali solution prepared in the step S1 in a depth of 11-16 mm, and simultaneously carrying out ultrasonic oscillation treatment.
4. The peak grinding process according to claim 1 or 3, wherein the alkali solution is 10-18 wt% sodium hydroxide solution.
5. The peak grinding process according to claim 1 or 3, wherein the heating temperature is 92-98 ℃.
6. The peak grinding process according to claim 1 or 3, wherein the soaking time is 15-25 min.
7. The peak grinding process according to claim 1 or 3, wherein the frequency of the ultrasonic oscillation is 2-8 kHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910936263.6A CN112568591A (en) | 2019-09-29 | 2019-09-29 | Peak grinding process for bristles of cosmetic brush |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910936263.6A CN112568591A (en) | 2019-09-29 | 2019-09-29 | Peak grinding process for bristles of cosmetic brush |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115613347A (en) * | 2022-09-19 | 2023-01-17 | 珠海麦得发生物科技股份有限公司 | Peak grinding process and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060128068A (en) * | 2005-06-08 | 2006-12-14 | 윤정희 | Method and apparatus for preparing artificial filament using ultrasonic wave |
| WO2009097600A1 (en) * | 2008-02-02 | 2009-08-06 | E. I. Du Pont De Nemours And Company | Tapered filaments from bio-based materials and methods for preparing same |
| KR20110129598A (en) * | 2010-05-26 | 2011-12-02 | 윤정희 | Developing tapering process of 100% pla and pla/pbt blended monofilaments using alkaline hydrolysis |
-
2019
- 2019-09-29 CN CN201910936263.6A patent/CN112568591A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060128068A (en) * | 2005-06-08 | 2006-12-14 | 윤정희 | Method and apparatus for preparing artificial filament using ultrasonic wave |
| WO2009097600A1 (en) * | 2008-02-02 | 2009-08-06 | E. I. Du Pont De Nemours And Company | Tapered filaments from bio-based materials and methods for preparing same |
| KR20110129598A (en) * | 2010-05-26 | 2011-12-02 | 윤정희 | Developing tapering process of 100% pla and pla/pbt blended monofilaments using alkaline hydrolysis |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115613347A (en) * | 2022-09-19 | 2023-01-17 | 珠海麦得发生物科技股份有限公司 | Peak grinding process and application thereof |
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