CN109820736B - Cosmetic cotton and preparation method thereof - Google Patents
Cosmetic cotton and preparation method thereof Download PDFInfo
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- CN109820736B CN109820736B CN201910215803.1A CN201910215803A CN109820736B CN 109820736 B CN109820736 B CN 109820736B CN 201910215803 A CN201910215803 A CN 201910215803A CN 109820736 B CN109820736 B CN 109820736B
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Abstract
The invention belongs to the field of cosmetics, and particularly relates to a cosmetic cotton and a preparation method thereof. The cosmetic cotton comprises a surface layer and an inner layer, wherein the surface layer wraps the inner layer and is integrated with the inner layer through a water flow interweaving method, the surface layer is non-woven fabric made of superfine fibers with the fineness of less than 0.3 denier, and the weight of the surface layer is 5-20 g/m3The inner layer is a non-woven fabric made of chitosan modified alginic acid fibers and chitosan fibers, and the weight of the inner layer is 40-80 g/m3. The face layer adopted by the cosmetic cotton is a non-woven fabric made of superfine fibers with the fineness of less than 0.3 denier, the surface is soft and smooth, the cosmetic cotton has a good wiping function, and the inner side of the cosmetic cotton is a non-woven fabric made of chitosan modified alginic acid fibers and chitosan fibers, so that the cosmetic cotton has good mechanical property and moisture retention property.
Description
Technical Field
The invention belongs to the field of cosmetics, and particularly relates to a cosmetic cotton and a preparation method thereof.
Background
Makeup is a female beauty technology with a long history, and more women like makeup along with the progress of the times. The application of cosmetics is very extensive, and an auxiliary product, namely a cosmetic cotton product, is required to be used in the process of using the cosmetics. The cosmetic cotton becomes an essential tool in the makeup, and the inconvenience of makeup application and makeup removal by hands or cotton swabs and the like is changed.
The existing cosmetic cotton mainly comprises two types of pure cotton and chemical fiber. The pure cotton type cosmetic cotton is fluffy, soft and good in water absorption, but has low strength, poor wear resistance, and the problems of breakage, chip falling and the like in the using process; most chemical fiber type cosmetic cotton is spunlace nonwoven fabric which has high strength, tensile strength and wear resistance, but has relatively thin texture, poor water absorption and roughness, and is easy to damage skin.
The applicant applies for Chinese invention patent (application number: 2019101806906) and provides a natural component non-woven fabric base film substrate and a preparation method thereof, the natural component non-woven fabric base film substrate is prepared from chitosan modified alginic acid fiber and chitosan fiber, sodium acetate is used for pretreatment before modification of the alginic acid fiber, the mechanical property of a sodium alginate non-woven fabric mask base film product can be effectively improved, and meanwhile, the moisture retention capability of the mask is greatly facilitated. The base material can also have good mechanical and moisture-keeping properties when applied to the cosmetic cotton, but the cosmetic cotton is directly acted on the skin of a human body, so that the comfort is still required to be improved.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide a cosmetic cotton, the surface layer of the cosmetic cotton is a non-woven fabric made of superfine fibers with the fineness of less than 0.3 denier, the surface of the cosmetic cotton is soft and silky, the cosmetic cotton has a good wiping function, and the inner side of the cosmetic cotton is a non-woven fabric made of chitosan modified alginic acid fibers and chitosan fibers, and has good mechanical and moisture retention properties.
In order to achieve the purpose, the invention adopts the following technical scheme:
the cosmetic cotton comprises a surface layer and an inner layer, wherein the surface layer wraps the inner layer and is integrated with the inner layer through a water flow interweaving method, the surface layer is non-woven fabric made of superfine fibers with the fineness of less than 0.3 denier, and the weight of the surface layer is 5-20 g/m3The inner layer is a non-woven fabric made of chitosan modified alginic acid fibers and chitosan fibers, and the weight of the inner layer is 40-80 g/m3。
As a further improvement, the superfine fibers are nylon 6 or nylon 66.
As a further improvement, the weight of the surface layer is 8-15 g/m3The weight of the inner layer is 50-70 g/m3。
As a further improvement, the mass ratio of the chitosan modified alginic acid fiber to the chitosan fiber is 4: 1-2: 1.
as a further improvement, the preparation method of the chitosan modified alginate fiber comprises the following steps: 1) when the chitosan modified alginate fiber is prepared, an alkaline solution is used for pretreating the alginate fiber before modification, 2) after alkali liquor is removed, a chitosan solution with the dry mass of 2-10% of that of the alginate fiber is added for modification at 35-45 ℃ for 30-60 minutes, and then liquid removal, drying and opening are carried out.
As a further improvement, when preparing the chitosan modified alginate fiber, sodium acetate solution is used for pre-treating the alginate fiber before modification. Preferably, the alginic acid fibers are pretreated with 80g/L sodium acetate solution 10 times the dry mass of the alginic acid fibers for 30 minutes.
As a specific embodiment, the alginic acid fiber is pretreated by using 80g/L sodium acetate solution with 10 times of dry mass of the alginic acid fiber for 30 minutes, after alkali liquor is removed, chitosan solution with concentration of 1.5 percent and 5 times of dry mass of the alginic acid fiber is added for modification at 40 ℃ for 45 minutes, and then liquid removal, drying and opening are carried out.
The inventor finds in an inner layer formula experiment that in the method for breaking the molecular arrangement on the fiber surface by using low-concentration strong base pre-swelling treatment which is mostly used before modification of alginate fibers at present, strong base is used for breaking the molecular arrangement on the fiber surface so as to facilitate subsequent crosslinking and also damage (conjecture) the main body of the alginate fibers. The applicant finds that the pretreatment of sodium alginate by using sodium acetate with higher concentration to prepare relatively mild alkaline conditions can effectively improve the mechanical property of an inner layer product of the sodium alginate non-woven fabric, and meanwhile, the method is greatly helpful for the moisture retention capacity of the mask.
The alginic acid and the chitosan in the invention can be selected from products of various sources, such as alginic acid and chitosan prepared from kelp, undaria pinnatifida, shrimp shell, crab shell, silkworm pupa and the like, and the alginic acid and the chitosan of various molecular weights and deacetylation degrees can be selected to prepare the inner layer according to the source of raw materials, the performance of the required product and the requirement of the preparation process.
Due to the adoption of the technical scheme, the face layer of the cosmetic cotton is made of the non-woven fabric made of the superfine fibers with the fineness of less than 0.3 denier, the surface is soft and smooth, the cosmetic cotton has a good wiping function, and the inner side of the cosmetic cotton is made of the chitosan modified alginic acid fibers and the chitosan fibers, so that the cosmetic cotton has good mechanical and moisture-keeping properties.
Drawings
FIG. 1 is a scanning electron microscope image of an alginate fiber nonwoven fabric;
FIG. 2 is a scanning electron microscope image of sodium hydroxide pretreated chitosan-modified alginate fiber nonwoven fabric;
FIG. 3 is a scanning electron microscope image of sodium acetate pretreated chitosan modified alginate fiber nonwoven fabric.
FIG. 4 is a diagram showing the front and back effects of a sheet of the present invention applied to the hand after absorbing 5ml of water.
Detailed Description
Primary reagents and instruments
Alginate fibers and chitosan fibers: the Qingdao Mingyue biomedical materials, Inc.;
and (3) chitosan: produced by Jiangsu Xinghing biological products, the inventor self-tests that the deacetylation degree is about 72.5 percent and the molecular weight is about 1.4x105；
Sodium acetate: manufactured by Tianjin Tianmao chemical Co., Ltd;
nylon 66 ultrafine fiber: manufactured by Zhuzhen Suyu chemical fibers Co., Ltd;
a double-screw extruder: XF, Zhang Jia hong Xufa mechanical science and technology Limited;
spunbond nonwoven loom: RH-PC-4/750, manufactured by Wenzhou Ronghui machinery manufacturing Ltd;
JSM-840 scanning electron microscope: manufactured by Tokyo electronics Inc
Other reagents and instruments are all conventional domestic products (tensile property and moisture retention property detection is carried out by research institute of quality control department, which only provides detection standards, and the specific equipment is unknown).
Example 1 preparation of chitosan-modified alginate fibers
Performing orthogonal experiments according to mechanical properties and moisture retention performance to select proper alkali liquor concentration, treatment time, chitosan concentration, modification time and dosage parameters, and preparing the chitosan modified alginate fiber by two optimal implementation modes.
1, chitosan modified alginate fiber:
pretreating alginic acid fiber for 30 minutes by using 80g/L sodium acetate solution with the dry mass 10 times of that of the alginic acid fiber, removing alkali liquor, adding 1.5 percent chitosan solution with the dry mass 5 times of that of the alginic acid fiber, modifying for 45 minutes at 40 ℃, removing liquid, drying and opening.
Chitosan modified alginate fiber 2:
pretreating alginic acid fiber for 10 minutes by using 30g/L sodium hydroxide solution with the dry mass 10 times of that of the alginic acid fiber, removing alkali liquor, adding 1% chitosan solution with the dry mass 5 times of that of the alginic acid fiber, modifying for 30 minutes at 50 ℃, removing liquid, drying and opening.
Example 2 preparation of inner layer of nonwoven Fabric
Orthogonal experiments are carried out according to the mechanical property and the moisture retention property, the appropriate dosage and treatment parameters of the chitosan fiber are selected, and the best mode is ten times that of the inner layer 1-3 of the non-woven fabric (the softening agent is added to be as close to the actual inner layer product as possible so as to more accurately test the performance in the example 4; the softening agent is not used in the inner layer product in the example 3 because a plurality of softening agents interfere the observation of an electron microscope; the cobalt 60 irradiation treatment is carried out in an oxygen/nitrogen atmosphere, the distance from the irradiation center is 1m, and the irradiation amount is about 2.4 kGy).
Inner layer 1 of non-woven fabric:
and (2) mixing 130 parts of chitosan modified alginate fiber and 10 parts of chitosan fiber in a mixer for 10-20 minutes, heating and melting for 30 minutes by a double-screw extruder, stretching to form filaments, laying to form a net, performing hot press molding, coating purified water (a glycerol ether quaternary ammonium salt softening agent dissolved with 3%), drying, performing irradiation treatment (cobalt 60), and cutting and packaging.
Non-woven fabric inner layer 2:
and (2) mixing 230 parts of chitosan modified alginic acid fiber and 10 parts of chitosan fiber in a mixer for 10-20 minutes, heating and melting for 30 minutes by a double-screw extruder, stretching to form filaments, laying to form a net, hot-press molding, coating purified water (a glycerol ether quaternary ammonium salt softening agent dissolved with 3%), drying, performing irradiation treatment (cobalt 60), and cutting and packaging.
Non-woven fabric inner layer 3:
and (2) mixing 30 parts of unmodified alginic acid fiber and 10 parts of chitosan fiber in a mixer for 10-20 minutes, heating and melting for 30 minutes by a double-screw extruder, stretching to form filaments, laying to form a net, hot-press molding, coating purified water (dissolved with 3% of glycerol ether quaternary ammonium salt softener), drying, performing irradiation treatment (cobalt 60), and cutting and packaging.
Example 3 Electron microscopy morphological Observation of nonwoven Fabric inner layer
A5 mm square piece was prepared from the inner layer (without softener, otherwise as in example 2), and the surface was sprayed with gold for 20 minutes to a thickness of about 10 μm, and then frozen and broken with liquid nitrogen, and observed at an accelerated voltage of 20kv, and the results are shown in FIGS. 1-3.
The surface chitosan of the alginate fiber non-woven fabric pretreated by the sodium hydroxide and the alginic acid are wound and crosslinked to form a coarse grid structure, and the grid structure can cause the mechanical property of the alginate fiber non-woven fabric to be improved but is unfavorable for the moisturizing property; compared with the prior art, the sodium acetate pretreated alginic acid fiber non-woven fabric has more compact and uniform cross-linking state on the surface, is beneficial to improving the moisture retention performance and is also beneficial to further improving the mechanical performance.
Example 4 mechanical and moisture holding Properties of inner nonwoven Fabric layer
Tensile Properties of inner layer products were measured in accordance with GB/T3923.1-2013 (determination of tensile Properties of textile fabrics part 1 tenacity at break and elongation at break (bar method)))
The method for detecting the moisture retention performance comprises the following steps: taking an 8-centimeter square inner layer sample, weighing, soaking the 8-centimeter square inner layer sample in a culture dish filled with purified water for 15 minutes in a constant temperature box with 25 ℃ and 60% relative humidity, taking out, suspending and placing for about 1 minute until no continuous water drops drip, and weighing. The moisturizing performance was determined by comparison of dry weight and wet weight (water absorption = weight after water absorption/weight before water absorption x 100%).
The results are shown in the following table:
from the above data, it can be seen that the mechanical properties of the alginate fiber nonwoven fabric pretreated with sodium hydroxide are significantly improved, but the water absorption performance is not improved, or even slightly decreased (for possible reasons, see example 2). While the alginic acid fiber non-woven fabric pretreated by the sodium acetate realizes remarkable improvement on mechanical properties (the tensile strength is basically the same as that of sodium hydroxide pretreatment, the elongation at break is obviously better, and the alginic acid fiber non-woven fabric is more easily in close contact with skin during application), the water absorption and moisture retention performance of the inner layer is also greatly improved, and the other ranges exceed 30%. The process of the sodium acetate pretreated alginic acid fiber effectively improves the performance of inner-layer non-woven fabric products, and is expected to be used in other non-woven fabric formulas after improvement and other purposes requiring mechanical and water absorption performances, such as clothes, medical dressings and the like.
EXAMPLE 5 preparation of cosmetic Cotton
A method for preparing a cosmetic cotton, which is prepared by water-jet interlacing a non-woven fabric made of nylon 66 ultra-fine fibers and the non-woven fabric inner layer 1 prepared in example 2. The weight of the surface layer is 12g/m3The weight of the inner layer is 60g/m3。
Example 6 sensory evaluation
The cotton pads prepared in example 5 of the present invention were soaked with 5ml of pure water (distilled water), and 50 women participated in evaluation of "softness", "silky feeling (close feeling)", and wiping feeling "of wet sheets when 0.2g of foundation applied to the face was wiped with each cotton pad on a 4-point scale, and the results are shown in table 1.
1. Softness degree
A: soft, B: somewhat mild, C: which is not, D: is not soft;
2. feeling of silkiness
A: silky feeling, B: somewhat silky feeling, C: which is not, D: no silky feeling;
3. feeling of wiping
A: having a wiping feel, B: feel of a little rubbing, C: that is also not said, D: there was no wiping feeling.
TABLE 1 measurement results
Claims (4)
1. A cosmetic cotton is prepared fromThe cotton comprises a surface layer and an inner layer, wherein the surface layer wraps the inner layer and is integrated with the inner layer through a water flow interweaving method, and the cotton is characterized in that the surface layer is non-woven fabric made of superfine fibers with the fineness of less than 0.3 denier, and the weight of the surface layer is 5-20 g/m3The inner layer is a non-woven fabric made of chitosan modified alginic acid fibers and chitosan fibers, and the weight of the inner layer is 40-80 g/m3；
The inner layer is made of chitosan modified alginic acid fiber and chitosan fiber; wherein the chitosan modified alginic acid fiber is prepared by the following method: pretreating alginic acid fibers for 30 minutes by using 80g/L sodium acetate solution with the dry mass 10 times that of the alginic acid fibers, removing alkali liquor, adding 1.5 percent chitosan solution with the dry mass 5 times that of the alginic acid fibers, modifying for 45 minutes at 40 ℃, removing liquid, drying and opening;
wherein the preparation process of the inner layer comprises the following steps: and (2) mixing 30 parts of chitosan modified alginic acid fiber and 10 parts of chitosan fiber in a mixer for 10-20 minutes, heating and melting for 30 minutes by a double-screw extruder, stretching to form filaments, laying to form a net, performing hot press molding, coating purified water dissolved with 3% of glycerol ether quaternary ammonium salt softener, drying, performing irradiation treatment, and cutting and packaging.
2. The cosmetic cotton of claim 1, wherein the microfine fiber is nylon 6 or nylon 66.
3. The cosmetic cotton according to claim 1, wherein the weight of the top layer is 8 to 15g/m3The weight of the inner layer is 50-70 g/m3。
4. A method for preparing a cosmetic cotton according to any one of claims 1 to 3, which comprises using a nonwoven fabric made of ultrafine fibers, a nonwoven fabric made of chitosan-modified alginic acid fibers, and a nonwoven fabric made of chitosan fibers, and performing water-jet interlacing.
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| CN111172666B (en) * | 2019-12-27 | 2021-06-25 | 常熟市欣鑫经纬编有限公司 | Preparation method of rabbit hair velvet fiber-like fabric |
| CN111172664B (en) * | 2019-12-27 | 2021-06-25 | 常熟市欣鑫经纬编有限公司 | Rabbit hair wool fiber-like fabric |
| CN116077351A (en) * | 2023-02-10 | 2023-05-09 | 科丝美诗(中国)化妆品有限公司 | Facial care composition containing non-woven fabric and toning lotion and application thereof |
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