A highly elastic and breathable cream mask cloth and preparation method thereof

Abstract

The present invention belongs to the field of facial mask technology, and specifically relates to a highly elastic and breathable cream facial mask cloth and a preparation method thereof, the preparation method comprising the following steps: (1) opening cotton fibers with an opener to obtain a cotton fiber web; placing the cotton fiber web in a closed cotton storage, spraying a modifier into the cotton storage to obtain a modified cotton fiber web; opening Tencel fibers with an opener, and then feeding the fibers into a cotton box of a carding machine for carding to obtain a Tencel fiber web; and modifying the Tencel fiber web to obtain a modified Tencel fiber web; (2) laying a layer of modified cotton fiber web and a layer of modified Tencel fiber web to obtain a composite fiber web, and then performing a hydroentanglement treatment; (3) dehydrating and drying the hydroentangled composite fiber web with a roller, and then performing hot rolling and shaping with a roller to obtain a highly elastic and breathable cream facial mask cloth. The cream facial mask cloth prepared by the present invention has high elasticity and breathability, and good antibacterial properties.

Description

Technical Field

[0001] The invention belongs to the technical field of cosmetics, and in particular relates to a highly elastic and breathable cream mask cloth and a preparation method thereof. Background Art

[0002] Traditional facial masks are double-sided and soaked with liquid essence. They lack water resistance and are not unidirectional, making them difficult to apply to cream-based products. Cream mask cloths are a unique form of facial mask that combine the characteristics of both creams and masks. Generally, these masks effectively absorb and lock in cream-based essences. When used, the cloth adheres tightly to the skin, helping it absorb the active ingredients better.

[0003] Cream mask cloths do face many technical challenges during the design and production process, especially in terms of breathability, moisture absorption, antibacterial properties, and elasticity. These properties are crucial to improving the user experience and product effectiveness: (1) Breathability: If the mask is not breathable when it fits the skin, it may cause the carbon dioxide on the skin surface to not be effectively discharged, thereby affecting skin health. 2. Moisture absorption rate: The mask cloth needs to have good moisture absorption capacity so that it can effectively absorb and retain the essence in the cream. However, if the moisture absorption rate is too high, it may also cause the essence to be lost too quickly. 3. Antibacterial properties: If the mask does not have good antibacterial properties during production and storage, it is easy to breed bacteria, affecting product safety. 4. Elasticity: The mask cloth needs to have a certain degree of elasticity to adapt to different face shapes and ensure a tight fit, but excessive elasticity may cause the mask to deform, affecting the user experience.

[0004] Existing technologies primarily adjust the proportions and structure of the mask fabric material to find an appropriate elastic range, ensuring the mask fits snugly without deforming due to excessive stretching. To ensure this elasticity, cream masks currently on the market typically use conventional elastic films, such as PU films. However, PU films have poor air permeability and moisture absorption, making them unsatisfactory for cream masks and failing to meet consumer demand.

[0005] Therefore, there is an urgent need for a highly elastic and breathable cream mask cloth and a preparation method thereof. Summary of the Invention

[0006] The purpose of the present invention is to provide a highly elastic and breathable cream mask cloth and a preparation method thereof.

[0007] In order to achieve the above object, the present invention provides the following technical solutions:

[0008] A method for preparing a highly elastic and breathable cream mask cloth, the method comprising the following steps:

[0009] (1) opening the cotton fibers with an opener, and then feeding them into a cotton box of a carding machine for carding to obtain a cotton fiber web; placing the cotton fiber web in a sealed cotton bunker, spraying a modifier into the cotton bunker, wherein the modifier comprises the following raw materials in parts by weight: 12-15 parts of modified chitosan, 15-18 parts of polyethylene glycol, 4-7 parts of a surfactant, and 110-120 parts of water; setting the cotton bunker temperature to 45-50° C. for simmering treatment for 7-9 hours, and subjecting the cotton bunker to a natural cooling treatment, during which a steam valve in the cotton bunker is opened to spray steam humidification to a humidity of 15-17%; closing the steam valve, setting the cotton bunker temperature to 47-52° C. for simmering treatment for 30-35 hours, and after cooling to room temperature, opening the cotton bunker to add the modified cotton fiber web;

[0010] The Tencel fibers are opened by an opener, and then fed into a cotton box of a carding machine for carding to obtain a Tencel fiber web, and the Tencel fiber web is modified to obtain a modified Tencel fiber web;

[0011] (2) The modified cotton fiber web and the modified Tencel fiber web are laid flat, and then subjected to hydroentanglement treatment to obtain a modified cotton fiber layer and a modified Tencel fiber layer, respectively. The modified cotton fiber layer and the modified Tencel fiber layer are compounded with PUR glue; the sizing weight of the PUR glue is 3-4 g / m 2 The glue application area accounts for 10%-20% of the mask cloth, and the glue application area is circular and evenly distributed; the gluing method is the gravure gluing process, the depth of the gravure roller's gluing concave points is 0.2-0.8mm, and the material is ceramic; a highly elastic and breathable cream mask cloth is obtained.

[0012] Furthermore, the amount of the modifier added is 40-45% of the mass of the cotton fiber web.

[0013] Furthermore, the preparation method of the modified chitosan includes the following steps: adding 5 parts by weight of chitosan to 160-180 parts by weight of an acetic acid aqueous solution with a volume concentration of 2-4%, dissolving, continuously adding 120-140 parts by weight of ethanol, adjusting the pH value to 5-6 with a 0.1-0.2 mol / L sodium hydroxide aqueous solution, adding 0.4-0.8 parts by weight of octadecyl aldehyde and 0.004-0.006 parts by weight of sodium cyanoborohydride, stirring at 25-30° C. for 25-30 hours, adjusting the pH value to 7 with a 0.1-0.2 mol / L sodium hydroxide aqueous solution, adding 220-240 parts by weight of ethanol for precipitation, centrifuging, washing, and freeze-drying to obtain the modified chitosan.

[0014] Chitosan was purchased from Qingdao Bozhi Huili Biotechnology Co., Ltd., water-soluble chitosan with a deacetylation degree of ≥90%. Octadecyl aldehyde: CAS: 638-66-4.

[0015] The liquid absorption of cream mask cloths currently on the market is generally on the low side, and lower cloths cannot absorb enough cream essences, causing the skin to be unable to obtain enough moisture and moisturizing ingredients. The present invention, by modifying cotton fiber, can improve the liquid absorption of facial mask cloth, can absorb more cream essences, which means that more moisturizing ingredients can be absorbed by the skin, thereby providing a longer moisturizing effect. The present invention, by modifying chitosan, improves the hydrophilicity of the cotton fiber web, and simultaneously finds in the test that the use of octadecyl aldehyde modification effect is better than octadecyl benzaldehyde, and analysis is due to the presence of no benzene ring, and the aldehyde group of octadecyl aldehyde is more likely to react with the group of chitosan, generating a stable amine bond (-NH-C18H37). The presence of a benzene ring in octadecyl benzaldehyde may produce a certain steric hindrance effect to the reactivity of the aldehyde group, reducing the efficiency of the amino reaction with the chitosan.

[0016] Furthermore, the surfactant includes sodium dodecylbenzenesulfonate, ammonium lauryl alcohol ether sulfate (CAS No. 67762-19-0), and sodium α-olefin sulfonate (CAS No. 68439-57-6) in a weight ratio of 1: (1.2-1.5): (0.5-0.7).

[0017] Furthermore, the method for modifying the Tencel fiber web is as follows:

[0018] S1: Mix nano zinc oxide, nano titanium oxide, graphene, silane coupling agent KH550 and distilled water in a weight ratio of 1: (0.3-0.5): (1.2-1.4): (0.02-0.05): (500-550), and perform ultrasonic treatment at a frequency of 30-40 kHz for 1.5-2 h to obtain a modified mixed solution;

[0019] S2: soaking the Tencel fiber web in the mixed solution, heating and pressurizing at 90-93° C. and 0.5-0.7 MPa for 10-12 hours; washing with water, and drying to obtain a modified Tencel fiber web.

[0020] Furthermore, the volume ratio of the Tencel fiber web to the modified mixed liquid is 1:(2-4).

[0021] The present invention can improve the antibacterial properties of the facial mask cloth and the air permeability of the facial mask cloth by using compounded nanomaterials for modification. Through the above treatment, a large number of microporous structures are formed in the Tencel fiber mesh. These micropores not only increase the surface area of the fiber mesh, but also provide more channels, allowing air and water vapor to pass through more easily, thereby improving the air permeability. The modification treatment can make the Tencel fibers more evenly arranged, reduce the close packing between the fibers, and thus increase the space for air circulation. The modified Tencel fiber mesh has better hydrophilicity and can further increase the liquid absorption capacity.

[0022] Furthermore, the mass ratio of the modified cotton fiber layer to the modified tencel fiber layer is (4-5):(3-4).

[0023] Furthermore, the fineness of the cotton fiber is 3.7-4.2 micronaires and the length is 25-30 mm, and the fineness of the Tencel fiber is 1.33 dtex and the length is 35-42 mm.

[0024] Furthermore, the modified cotton fiber web has a basis weight of 30-50 g / m 2 The weight of modified Tencel fiber mesh is 40-55g / m 2 .

[0025] Furthermore, the hydroentanglement treatment adopts three hydroentanglement treatments, namely drum hydroentanglement, flat mesh hydroentanglement, and flat mesh hydroentanglement. The hydroentanglement pressures of the three hydroentanglement treatments are 0.8-0.9MPa, 7-8MPa, and 13-15MPa, respectively.

[0026] The invention provides a highly elastic and breathable cream mask cloth prepared by the preparation method.

[0027] Compared with the prior art, the advantages and beneficial effects of the present invention are:

[0028] 1. The present invention provides a highly elastic and breathable cream mask cloth and a method for preparing the same. The mask cloth is made by blending natural fibers and synthetic fibers in a specific ratio. A special weaving technique and post-processing process are used to prepare a mask base cloth with high elasticity and good breathability. The cloth can effectively carry cream-like skin care products while ensuring that the skin can breathe smoothly and avoid feeling stuffy. The present invention also provides a method for preparing the cloth, comprising the steps of selecting fibers, adjusting the blending ratio, weaving, and post-processing. The cloth is suitable for all skin types, especially for skin that requires deep nourishment and moisturizing. After use, it can significantly increase the moisture content and elasticity of the skin.

[0029] 2. The cream mask cloth of the present invention is composed of two composite layers in total, the first layer is a non-woven fabric layer, and the second layer is an elastic layer. As the above two layers, they are mainly composited by PUR glue. In order to ensure that the mask cloth has good softness and ductility after composite, so that it can have a good application effect; the glue weight of the glue is below 5g / m2, and it needs to be evenly dispersed without affecting the breathability. The glue roller of the present invention needs to have special requirements. The glue application area accounts for between 10% and 20%, and the glue application part is circular with a circular diameter of 0.5-1mm and is evenly distributed. The gluing method is a gravure gluing process. The depth of the gluing concave point of the gravure roller is 0.2-0.8mm, the material is ceramic, and the solid content of the glue is 20%-50%. This can ensure good softness at the glue point position, and there will be no difference in skin feel between the glue point position and the non-glue point position.

[0030] 3. The present invention improves the liquid absorption capacity of the facial mask cloth by modifying the cotton fiber, and can absorb more cream essence, which means that more moisturizing ingredients can be absorbed by the skin, thereby providing a longer-lasting moisturizing effect.

[0031] 4. The present invention can improve the antibacterial property of the facial mask cloth and the air permeability of the facial mask cloth by using compounded nanomaterials for modification. DETAILED DESCRIPTION

[0032] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0033] PUR glue was purchased from Shenzhen Meikeyi New Materials Co., Ltd.

[0034] Example 1

[0035] This embodiment provides a method for preparing a highly elastic and breathable cream mask cloth, the method comprising the following steps:

[0036] (1) The cotton fibers are opened by a loosening machine and then fed into a cotton box of a carding machine for carding to obtain a cotton fiber web; the cotton fiber web is placed in a closed cotton bunker, and a modifier is sprayed into the cotton bunker, wherein the modifier comprises raw materials in parts by weight: 13 parts of modified chitosan, 16 parts of polyethylene glycol, 6 parts of a surfactant, and 115 parts of water; the cotton bunker temperature is set at 47° C. and a simmering treatment is performed for 8 hours, and the cotton bunker is naturally cooled. During this process, a steam valve in the cotton bunker is opened to spray steam humidification to a humidity of 16%; the steam valve is closed, the cotton bunker temperature is set at 50° C. and a simmering treatment is performed for 32 hours. After the temperature is cooled to room temperature, the cotton bunker is opened to add the modified cotton fiber web;

[0037] The added amount of the modifier is 42% of the mass of the cotton fiber web.

[0038] The preparation method of modified chitosan comprises the following steps: adding 5 parts by weight of chitosan to 170 parts by weight of an acetic acid aqueous solution with a volume concentration of 3%, dissolving the chitosan, adding 130 parts by weight of ethanol, adjusting the pH value to 5.5 with a 0.15 mol / L sodium hydroxide aqueous solution, adding 0.6 parts by weight of octadecyl aldehyde and 0.005 parts by weight of sodium cyanoborohydride, stirring at 27°C for 28 hours, adjusting the pH value to 7 with a 0.15 mol / L sodium hydroxide aqueous solution, adding 230 parts by weight of ethanol for precipitation, centrifuging, washing, and freeze-drying to obtain the modified chitosan.

[0039] Chitosan was purchased from Qingdao Bozhi Huili Biotechnology Co., Ltd., water-soluble chitosan with a deacetylation degree of ≥90%. Octadecyl aldehyde: CAS: 638-66-4.

[0040] The surfactant comprises sodium dodecylbenzenesulfonate, ammonium lauryl alcohol ether sulfate (CAS No. 67762-19-0), and sodium α-olefinsulfonate (CAS No. 68439-57-6) in a weight ratio of 1:1.3:0.6.

[0041] The Tencel fibers are opened by an opener, and then fed into a cotton box of a carding machine for carding to obtain a Tencel fiber web, and the Tencel fiber web is modified to obtain a modified Tencel fiber web;

[0042] The cotton fiber had a fineness of 3.9 micronaire and a length of 28 mm, while the Tencel fiber had a fineness of 1.33 dtex and a length of 40 mm. The Tencel fiber was purchased from Jiangsu Jinrongtai New Material Technology Co., Ltd., and the cotton fiber was purchased from WenJian Medical Co., Ltd.

[0043] The basis weight of the cotton modified cotton fiber web is 45g / m 2 The weight of modified Tencel fiber web is 42g / m 2 .

[0044] (2) The modified cotton fiber web and the modified Tencel fiber web were laid flat and then subjected to hydroentanglement treatment. The hydroentanglement treatment used three hydroentanglement treatments, namely drum hydroentanglement, flat mesh hydroentanglement and flat mesh hydroentanglement. The hydroentanglement pressures of the three hydroentanglement treatments were 0.9 MPa, 8 MPa and 13 MPa respectively. The modified cotton fiber layer and the modified Tencel fiber layer were obtained respectively. The mass ratio of the modified cotton fiber layer and the modified Tencel fiber layer was 4:3. The thickness of the modified cotton fiber layer was 0.24 and the thickness of the modified Tencel fiber was 0.20 mm. The modified cotton fiber layer and the modified Tencel fiber layer were compounded with PUR glue. The weight of the PUR glue was 3 g / m 2 The glue application area accounts for 15% of the mask cloth, and the glue application area is circular and evenly distributed; the gluing method is the gravure gluing process, the depth of the gravure roller's gluing concave points is 0.5mm, and the material is ceramic; a highly elastic and breathable cream mask cloth is obtained.

[0045] The method for modifying the Tencel fiber web is:

[0046] S1: nano zinc oxide, nano titanium oxide, graphene, silane coupling agent KH550 and distilled water in a weight ratio of 1:0.4:1.3:0.04:500 were mixed, and ultrasonic treatment was performed at a frequency of 35 kHz for 1.7 h to obtain a modified mixed solution;

[0047] The particle size of nano zinc oxide is 30-50nm and the specific surface area is 15-30m2 / g. Zhejiang Zhiti Nano Micro New Materials Co., Ltd. The particle size of nano titanium oxide is 5-15nm and the specific surface area is 30-50m 2 / g. Purchased from Beijing Dekedaojin Technology Co., Ltd. Graphene with a D50 value of 500nm was purchased from Qingdao Xingang Graphite Technology Co., Ltd.

[0048] S2: soaking the Tencel fiber web in the mixed solution, with the volume ratio of the Tencel fiber web to the modified mixed solution being 1:3, heating and pressurizing at 92° C. and 0.6 MPa for 11 hours; washing with water, and drying to obtain the modified Tencel fiber web.

[0049] Example 2

[0050] This embodiment provides a method for preparing a highly elastic and breathable cream mask cloth, the method comprising the following steps:

[0051] (1) The cotton fibers are opened by an opener and then fed into a cotton box of a carding machine for carding to obtain a cotton fiber web; the cotton fiber web is placed in a sealed cotton bunker, and a modifier is sprayed into the cotton bunker, wherein the modifier comprises the following raw materials in parts by weight: 12 parts of modified chitosan, 18 parts of polyethylene glycol, 4 parts of a surfactant, and 120 parts of water; the cotton bunker temperature is set at 50° C. and a simmering treatment is performed for 9 hours, and the cotton bunker is naturally cooled. During this process, a steam valve in the cotton bunker is opened to spray steam humidification to a humidity of 17%; the steam valve is closed, the cotton bunker temperature is set at 47° C. and a simmering treatment is performed for 30 hours. After cooling to room temperature, the cotton bunker is opened to add the modified cotton fiber web;

[0052] The amount of the modifier added is 45% of the mass of the cotton fiber web.

[0053] The preparation method of modified chitosan comprises the following steps: adding 5 parts by weight of chitosan to 160 parts by weight of an acetic acid aqueous solution with a volume concentration of 4%, dissolving the chitosan, adding 140 parts by weight of ethanol, adjusting the pH value to 6 with a 0.1 mol / L sodium hydroxide aqueous solution, adding 0.8 parts by weight of octadecyl aldehyde and 0.004 parts by weight of sodium cyanoborohydride, stirring at 30°C for 25 hours, adjusting the pH value to 7 with a 0.2 mol / L sodium hydroxide aqueous solution, adding 240 parts by weight of ethanol for precipitation, centrifuging, washing, and freeze-drying to obtain the modified chitosan.

[0054] Chitosan was purchased from Qingdao Bozhi Huili Biotechnology Co., Ltd., water-soluble chitosan with a deacetylation degree of ≥90%. Octadecyl aldehyde: CAS: 638-66-4.

[0055] The surfactant comprises sodium dodecylbenzenesulfonate, ammonium lauryl alcohol ether sulfate (CAS No. 67762-19-0), and sodium α-olefinsulfonate (CAS No. 68439-57-6) in a weight ratio of 1:1.5:0.5.

[0056] The Tencel fibers are opened by an opener, and then fed into a cotton box of a carding machine for carding to obtain a Tencel fiber web, and the Tencel fiber web is modified to obtain a modified Tencel fiber web;

[0057] The fineness of the cotton fiber is 4.0 micronaire and the length is 30 mm, and the fineness of the Tencel fiber is 1.33 dtex and the length is 38 mm.

[0058] The weight of the modified cotton fiber web is 30g / m 2 The weight of modified Tencel fiber web is 40g / m 2 .

[0059] (2) The modified cotton fiber web and the modified Tencel fiber web were laid flat and then subjected to hydroentanglement treatment. The hydroentanglement treatment used three hydroentanglement treatments, namely drum hydroentanglement, flat mesh hydroentanglement, and flat mesh hydroentanglement. The hydroentanglement pressures of the three hydroentanglement treatments were 0.9 MPa, 8 MPa, and 13 MPa, respectively. The modified cotton fiber layer and the modified Tencel fiber layer were obtained respectively. The mass ratio of the modified cotton fiber layer to the modified Tencel fiber layer was 5:3. The modified cotton fiber layer and the modified Tencel fiber layer were compounded with PUR glue. The glue weight of the PUR glue was 4 g / m 2 The glue application area accounts for 10% of the mask cloth, and the glue application area is circular and evenly distributed; the gluing method is the gravure gluing process, the depth of the gravure roller's gluing concave points is 0.8mm, and the material is ceramic; a highly elastic and breathable cream mask cloth is obtained.

[0060] The method for modifying the Tencel fiber web is:

[0061] S1: nano zinc oxide, nano titanium oxide, graphene, silane coupling agent KH550 and distilled water in a weight ratio of 1:0.3:1.2:0.02:500 were mixed, and ultrasonic treatment was performed at a frequency of 30 kHz for 2 h to obtain a modified mixed solution;

[0062] The particle size of nano zinc oxide is 30-50nm and the specific surface area is 15-30m 2 / g. Zhejiang Zhiti Nano Micro New Materials Co., Ltd. The particle size of nano titanium oxide is 5-15nm and the specific surface area is 30-50m 2 / g. Purchased from Beijing Dekedaojin Technology Co., Ltd. Graphene with a D50 value of 500nm was purchased from Qingdao Xingang Graphite Technology Co., Ltd.

[0063] S2: soaking the Tencel fiber web in the mixed solution, with the volume ratio of the Tencel fiber web to the modified mixed solution being 1:4, heating and pressurizing at 90° C. and 0.7 MPa for 12 h; washing with water, and drying to obtain the modified Tencel fiber web.

[0064] Comparative Example 1

[0065] The difference between this comparative example and Example 1 is that the modified chitosan is replaced by chitosan. Chitosan is purchased from Qingdao Bozhi Huili Biotechnology Co., Ltd., and is water-soluble chitosan with a deacetylation degree of ≥90%. Octadecyl aldehyde: CAS: 638-66-4.

[0066] Comparative Example 2

[0067] The difference between this comparative example and Example 1 is that octadecyl aldehyde is replaced by octadecylbenzaldehyde (CAS No.: 20895-38-7).

[0068] Comparative Example 3

[0069] The difference between this comparative example and Example 1 is that the surfactant includes sodium dodecylbenzenesulfonate, ammonium lauryl alcohol ether sulfate (CAS No. 67762-19-0), and sodium α-olefin sulfonate (CAS No. 68439-57-6) in a weight ratio of 1:1:1.

[0070] Comparative Example 4

[0071] The difference between this comparative example and Example 1 is that the Tencel fiber web is not modified.

[0072] Comparative Example 5

[0073] The difference between this comparative example and Example 1 is that nano zinc oxide, nano titanium oxide, graphene, silane coupling agent KH550 and distilled water are mixed in a weight ratio of 0.4:1.3:1:0.04:500.

[0074] Comparative Example 6

[0075] The difference between this comparative example and Example 1 is that the particle size of nano zinc oxide is 70-90nm, the specific surface area is 5-10m 2 / g. Zhejiang Zhiti Nano Micro New Materials Co., Ltd. The particle size of nano titanium oxide is 40-50nm and the specific surface area is 10-20m 2 / g. Purchased from Beijing Dekedaojin Technology Co., Ltd. Graphene with a D50 value of 1000 nm was purchased from Qingdao Xingang Graphite Technology Co., Ltd.

[0076] Performance Testing

[0077] The highly elastic and breathable cream mask fabrics prepared in Examples 1-2 and Comparative Examples 1-6 were used as samples for performance testing.

[0078] (1) Elasticity test: The tensile strength and elongation at break of the samples were tested in accordance with GB / T24218.3-2010. Five samples were taken along the machine output direction (longitudinal direction) and the fabric width direction (transverse direction). The samples were at least 100 mm away from the edge of the fabric, with a width of 50 mm and a length that met the clamping distance of 200 mm. After the test was completed, the average tensile strength and elongation at break of the five longitudinal samples were calculated.

[0079] (2) Air permeability test: The air permeability of the sample was tested in accordance with GB / T24218.15-2018. The sample was cut from 5 randomly selected areas. The sample size was 100*100mm. The pressure difference between the upper and lower surfaces of the sample was 200Pa. The circular test area of the test head was 20cm. 2 , take the average value after the test is completed.

[0080] (3) Liquid absorption test: According to GB / T24218.6-2010 "Liquid absorption of test samples", 5 samples were cut from 5 randomly selected areas, and the sample size was 100*100mm. The average value was taken after the test was completed.

[0081] (4) Antibacterial rate test: Oscillation method, to detect its antibacterial rate against Staphylococcus aureus.

[0082] The results are shown in Table 1.

[0083] Table 1 Performance test results

[0084]

[0085] The physical property requirements of spunlace nonwoven fabrics for facial mask fabrics are shown in Table 2.

[0086] Table 2 Physical properties requirements of spunlace nonwoven fabrics for facial mask fabrics

[0087]

[0088] For facial mask fabrics, the higher the longitudinal breaking strength and the lower the longitudinal elongation at break, the easier it is to load onto the machine. If the longitudinal elongation is too high, excessive pulling during loading can easily cause the product to deform, deviating from the intended mask size and failing to achieve the desired effect. During production, the tension of the mask fabric is typically controlled between 20N and 40N. Too little tension can lead to wrinkles and uneven product. Too much tension can easily deform the fabric and even cause it to break.

[0089] As can be seen from the above performance test results, the comprehensive performance of the cream mask cloth of Examples 1-2 is excellent. However, because the comparative examples do not adopt the necessary technical solutions, they are significantly worse than the examples in terms of corresponding performance tests. In Comparative Example 1, chitosan is not modified, and the liquid absorption decreases. In Comparative Example 2, octadecyl aldehyde is replaced with octadecylbenzaldehyde, and the liquid absorption decreases. In Comparative Example 3, the surfactant is different, and the liquid absorption decreases. In Comparative Example 4, the Tencel fiber mesh is not modified, and the antibacterial and breathable properties decrease. In Comparative Example 5, the ratios of nano-zinc oxide, nano-titanium oxide, and graphene are different, and the antibacterial and breathable properties decrease. In Comparative Example 6, the parameters of nano-zinc oxide, nano-titanium oxide, and graphene are different, and the antibacterial and breathable properties decrease. The above experimental results further demonstrate the importance of the technical solution defined in the present invention for its technical effects.

[0090] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A method for preparing a highly elastic and breathable cream mask cloth, characterized in that: The preparation method comprises the following steps: (1) The cotton fibers are opened by a loosening machine and then fed into a cotton box of a carding machine for carding to obtain a cotton fiber web; the cotton fiber web is placed in a sealed cotton bin and a modifier is sprayed into the cotton bin, wherein the modifier comprises raw materials in parts by weight: 12-15 parts of modified chitosan, 15-18 parts of polyethylene glycol, 4-7 parts of a surfactant and 110-120 parts of water; the cotton bin is set at a temperature of 45-50°C for a simmering treatment for 7-9 hours, and the cotton bin is naturally cooled. During this process, a steam valve in the cotton bin is opened to spray steam humidification until the humidity reaches 15-17%; the steam valve is closed, the cotton bin is set at a temperature of 47-52°C for a simmering treatment for 30-35 hours, and after cooling to room temperature, the cotton bin is opened to obtain a modified cotton fiber web; The Tencel fibers are opened by an opener, and then fed into a cotton box of a carding machine for carding to obtain a Tencel fiber web, and the Tencel fiber web is modified to obtain a modified Tencel fiber web; (2) The modified cotton fiber web and the modified Tencel fiber web are laid flat, and then subjected to hydroentanglement treatment to obtain a modified cotton fiber layer and a modified Tencel fiber layer, respectively. The modified cotton fiber layer and the modified Tencel fiber layer are compounded with PUR glue; the weight of the PUR glue is 3-4 g / m 2 The glue application area accounts for 10%-20% of the mask cloth, and the glue application area is circular and evenly distributed; the gluing method is the gravure gluing process, the depth of the gravure roller's gluing points is 0.2-0.8mm, and the material is ceramic; thus, a highly elastic and breathable cream mask cloth is obtained; The preparation method of the modified chitosan comprises the following steps: adding 5 parts by weight of chitosan to 160-180 parts by weight of an acetic acid aqueous solution with a volume concentration of 2-4%, dissolving the chitosan, then adding 120-140 parts by weight of ethanol, adjusting the pH value to 5-6 with a 0.1-0.2 mol / L sodium hydroxide aqueous solution, adding 0.4-0.8 parts by weight of octadecyl aldehyde and 0.004-0.006 parts by weight of sodium cyanoborohydride, stirring at 25-30° C. for 25-30 hours, adjusting the pH value to 7 with a 0.1-0.2 mol / L sodium hydroxide aqueous solution, adding 220-240 parts by weight of ethanol for precipitation, centrifuging, washing, and freeze-drying to obtain the modified chitosan; The surfactant comprises sodium dodecylbenzenesulfonate, ammonium lauryl alcohol ether sulfate and sodium α-olefinsulfonate in a weight ratio of 1: (1.2-1.5): (0.5-0.7); The method for modifying the Tencel fiber web is: S1: Mix nano zinc oxide, nano titanium oxide, graphene, silane coupling agent KH550 and distilled water in a weight ratio of 1: (0.3-0.5): (1.2-1.4): (0.02-0.05): (500-550), and perform ultrasonic treatment at a frequency of 30-40 kHz for 1.5-2 h to obtain a modified mixed solution; S2: soaking the Tencel fiber web in the mixed solution, heating and pressurizing at 90-93° C. and 0.5-0.7 MPa for 10-12 hours; washing with water, and drying to obtain a modified Tencel fiber web; The particle size of nano zinc oxide is 30-50nm and the specific surface area is 15-30m 2 / g; the particle size of nano titanium oxide is 5-15nm, and the specific surface area is 30-50m 2 / g; the D50 value of graphene is 500nm.

2. The method for preparing the highly elastic and breathable cream mask cloth according to claim 1, wherein: The amount of the modifier added is 40-45% of the mass of the cotton fiber web.

3. The method for preparing the highly elastic and breathable cream mask cloth according to claim 1, wherein: The volume ratio of the Tencel fiber web to the modified mixed liquid is 1:(2-4).

4. The method for preparing the highly elastic and breathable cream mask cloth according to claim 1, wherein: The mass ratio of the modified cotton fiber layer to the modified Tencel fiber layer is (4-5): (3-4).

5. The method for preparing the highly elastic and breathable cream mask cloth according to claim 1, wherein: The fineness of cotton fiber is 3.7-4.2 micronaires and the length is 25-30 mm, while the fineness of Tencel fiber is 1.33 dtex and the length is 35-42 mm.

6. The method for preparing the highly elastic and breathable cream mask cloth according to claim 1, characterized in that: The weight of the modified cotton fiber web is 30-50g / m 2 The weight of modified Tencel fiber mesh is 40-55g / m 2 .

7. A highly elastic and breathable cream mask cloth prepared according to the preparation method according to any one of claims 1 to 6.

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