Hygienic product and preparation method thereof

Abstract

The invention provides a hygienic product and a preparation method thereof, and the preparation method comprises the following steps: step a) mixing a functional component emulsion and water to obtain a spraying liquid; the functional component emulsion is prepared according to the following method: a1) uniformly mixing base oil, an emulsifier and a phospholipid component to obtain an oil phase; a2) uniformly mixing a functional component with the oil phase to obtain gel; a3) mixing the gel with a water phase formed by hexanediol and water to obtain a functional component emulsion; b) spraying the spraying liquid on a non-woven fabric, and drying to obtain the non-woven fabric added with functional components; c), the non-woven fabric added with the functional components is used as a surface layer to prepare the hygienic product. By means of the method, the adding amount of the functional components can be increased to about 15%, then the functional components are mixed with water to obtain the spraying liquid, the spraying liquid is sprayed to the surface of the non-woven fabric, and the content of the functional components on the surface of the non-woven fabric can be high and reaches 0.4% or above.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sanitary materials, in particular to a sanitary product and a preparation method thereof. BACKGROUND

[0002] At present, sanitary products on the market, such as sanitary napkins, paper diapers, and anti-overflow breast pads, are mostly made of three-layer structures of non-woven fabric materials, including a skin-adhesive surface layer, a waterproof bottom layer, and an absorption layer located between the two, which can absorb liquid such as milk and urine to meet the basic use requirements of users.

[0003] In order to improve the skin care effect of sanitary products, the prior art discloses adding functional ingredients such as camellia oil in sanitary products. However, the addition amount of functional ingredients in the current sanitary products is generally not more than 0.4%, and the skin care effect is limited. SUMMARY

[0004] Therefore, the present application provides a sanitary product and a preparation method thereof. The surface of the sanitary product provided by the present application can be added with a high-concentration functional ingredient, thereby improving the skin-friendliness and skin care effect of the sanitary product.

[0005] Oily substances such as vitamin E or squalane have moisturizing, nourishing, and other effects, and are commonly used efficacy components. However, vitamin E and squalane and the like are viscous in a conventional state and are insoluble in water, and are prone to stratification in an aqueous phase. Even with a certain rate of stirring, uniform mixing cannot be achieved. Vitamin E and squalane in this state cannot be uniformly added to the surface of non-woven fabric and sanitary products, and the addition amount is very low, resulting in limited skin care effect.

[0006] The present application provides a preparation method of a sanitary product, comprising the following steps:

[0007] Step a) mixing a functional ingredient emulsion and water to obtain a spraying liquid;

[0008] The functional ingredient emulsion is prepared according to the following method:

[0009] a1) uniformly mixing base oil, an emulsifier, and a phospholipid ingredient to obtain an oil phase;

[0010] a2) uniformly mixing a functional ingredient with the oil phase to obtain a gel;

[0011] a3) mixing the gel with an aqueous phase formed by hexylene glycol and water to obtain a functional ingredient emulsion;

[0012] The functional ingredient emulsion is at least one of a vitamin E emulsion or a squalane emulsion;

[0013] Step b) spraying the spraying liquid on the non-woven fabric to obtain the non-woven fabric added with the functional component after drying;

[0014] Step c) preparing the sanitary product with the non-woven fabric added with the functional component as the surface layer.

[0015] The present application uses vitamin E or squalane as the functional component, first mixes the base oil, emulsifier and phospholipid component uniformly to obtain the oil phase; then mixes the functional component with the oil phase uniformly to obtain the gel; and then mixes the gel with the water phase formed by hexanediol and water to obtain the functional component emulsion. The above method can increase the amount of the functional component in the functional component emulsion to about 15%, and then mixes it with water to obtain the spraying liquid, which is sprayed on the surface of the non-woven fabric, so that the content of the functional component on the surface of the non-woven fabric is high, up to more than 0.4%.

[0016] The present application first prepares the functional component emulsion, including the following steps:

[0017] a1) mixing the base oil, emulsifier and phospholipid component uniformly to obtain the oil phase;

[0018] a2) mixing the functional component with the oil phase uniformly to obtain the gel;

[0019] a3) mixing the gel with the water phase formed by hexanediol and water to obtain the functional component emulsion.

[0020] The present application uses the base oil, emulsifier, phospholipid component, functional component, hexanediol and water as raw materials to prepare the functional component emulsion, and obtains the emulsion with oil-in-water structure. In some specific implementation manners, the base oil is preferably glycerol; the emulsifier is preferably polysorbate-20; and the phospholipid component is preferably hydrogenated lecithin. In some specific implementation manners, the mass ratio of the base oil, emulsifier, phospholipid component, functional component, hexanediol and water is: 10-30:1-5:1-10:10-20:1-5:40-60, preferably 15-25:2-4:2-8:12-18:2-4:45-55. The method provided by the present application can make the content of the functional component in the emulsion be as high as about 15%, and can keep stable and uniform, and can be uniformly added to the surface of the non-woven fabric and sanitary product to play the skin care effect.

[0021] The present application first mixes the base oil, emulsifier and phospholipid component uniformly to obtain the oil phase. Specifically, a typical process of the step a1) is as follows:

[0022] The base oil, emulsifier and phospholipid component are mixed under stirring at a speed of 20-40 rpm, and then homogenized after being heated to 60-65°C to obtain an oil phase.

[0023] The base oil, emulsifier and phospholipid component are mixed in a vacuum emulsifying pot under stirring. In some specific embodiments, the stirring speed is 20-40 rpm, preferably 25-35 rpm. The mixture is heated under stirring, preferably to 60-65°C, and then homogenized to make the material uniformly into a gel, i.e. without phospholipid particles. In some specific embodiments, the homogenization speed is 1500-3000 rpm, preferably 2000-2500 rpm, and the homogenization time is 3-5 min. After homogenization, an oil phase is obtained, which is then cooled, preferably to 40-45°C.

[0024] After obtaining the oil phase, the functional component is mixed uniformly with the oil phase to obtain a gel. Specifically, the following steps can be included:

[0025] The functional component is added to the oil phase under stirring at a speed of 35-45 rpm and a vacuum degree of -0.02 to -0.06 MPa.

[0026] The functional component is added to the oil phase in the vacuum emulsifying pot under stirring. In some specific embodiments, the functional component is slowly added to the oil phase so that it is wrapped by the oil phase. In some specific embodiments, the stirring speed is 35-45 rpm, preferably 38-42 rpm. In some specific embodiments, the vacuum degree of the system during stirring is -0.01 to -0.06 MPa, preferably -0.02 to -0.05 MPa. In some specific embodiments, the functional component is added to the oil phase in the vacuum emulsifying pot, and stirring is performed until the material becomes a viscous to semi-solid gel, and the stirring time is about 25-35 min.

[0027] After obtaining the gel, the gel is mixed with an aqueous phase formed by hexanediol and water to obtain a functional component emulsion, which specifically includes the following steps:

[0028] The water phase is added to the gel under stirring, and the functional ingredient emulsion is obtained after homogenization, wherein the stirring speed is 15-35 rpm, the homogenization vacuum degree is -0.03-0.07 MPa, and the homogenization speed is 3000-5000 rpm.

[0029] The hexanediol and water are mixed uniformly to obtain the water phase. In some specific embodiments, the hexanediol and water are mixed under stirring. In some specific embodiments, the stirring speed is 1000-1500 rpm, preferably 1100-1400 rpm. In some specific embodiments, the stirring is at room temperature without heating.

[0030] The water phase is added to the gel under stirring, and the functional ingredient emulsion is obtained after homogenization. In some specific embodiments, the water phase is slowly added to the gel in the vacuum emulsification kettle, and the feeding speed of the material body is slightly increased. In some specific embodiments, the stirring speed is 15-35 rpm, preferably 20-30 rpm.

[0031] After the water phase is added, the mixture is homogenized under vacuum to obtain the emulsion. In some specific embodiments, the homogenization vacuum degree is -0.03-0.07 MPa, preferably -0.04-0.06 MPa. In some specific embodiments, the homogenization speed is 3000-5000 rpm, preferably 3500-4500 rpm. In some specific embodiments, the homogenization time is preferably 5-10 min.

[0032] In some specific embodiments, the functional ingredient emulsion is a vitamin E emulsion and / or a squalane emulsion, preferably a vitamin E emulsion and a squalane emulsion. That is, when vitamin E and squalane are added at the same time, it is preferred to prepare a vitamin E emulsion and a squalane emulsion respectively, and then mix the vitamin E emulsion, the squalane emulsion, and water to prepare the spraying liquid. At this time, the specific process is as follows:

[0033] The vitamin E emulsion is mixed with water uniformly, and the squalane emulsion is added and mixed uniformly.

[0034] Specifically, the application first slowly adds the vitamin E emulsion to the pretreated water under stirring, and continues to stir after the addition is completed to obtain a mixed solution. In some specific embodiments, the stirring speed is 800 rpm to 1500 rpm, preferably 900 rpm to 1200 rpm. In some specific embodiments, the stirring is continued for 10 min to 20 min, preferably 15 min, after the addition is completed.

[0035] The squalane emulsion is slowly added to the mixed solution under stirring, and the stirring is continued after the addition is completed to obtain a spraying solution. In some specific embodiments, the stirring speed is 800 rpm to 1500 rpm, preferably 900 rpm to 1200 rpm. In some specific embodiments, the stirring is continued for 10 min to 20 min, preferably 15 min, after the addition is completed.

[0036] In some specific embodiments, the mass ratio of the vitamin E to the squalane is 1:1 to 5, for example, it can be 5:5, 4:6, 3:7, or 2:8, etc.

[0037] After the spraying solution is obtained, the solution is continuously stirred to keep it uniform and stable. In some specific embodiments, the stirring speed is 40 rpm to 50 rpm.

[0038] After the spraying solution is obtained, the spraying solution is sprayed on the non-woven fabric, and after drying, a non-woven fabric added with functional ingredients is obtained. In some specific embodiments, a circular nozzle is used for spraying, and the aperture of the nozzle is 0.1 mm to 1 mm, preferably 0.2 mm to 0.8 mm, and more preferably 0.3 mm to 0.7 mm. In some specific embodiments, the outlet pressure of the spraying is 10 kg to 15 kg, preferably 11 kg to 13 kg. In some specific embodiments, the spraying speed is 50 m / min to 100 m / min, preferably 60 m / min to 90 m / min. After spraying, the non-woven fabric is dried, and the drying temperature is not more than 115°C, preferably 100°C to 115°C, and the time is not more than 6 s, preferably 1 s to 5 s. After drying, a non-woven fabric added with functional ingredients is obtained. The method provided by the application not only can uniformly add vitamin E and squalane to the surface of the non-woven fabric, but also has a high addition amount and can keep the vitamin E stable, thereby better playing a skin care role.

[0039] After obtaining the non-woven fabric added with the functional ingredient, the non-woven fabric is used as a surface layer to prepare a sanitary product, such as a sanitary napkin, a paper diaper, a breast milk leakage prevention pad, etc. In some specific implementations, the sanitary product comprises a waterproof bottom layer, an absorbing layer and a surface layer which are sequentially stacked, and the material of the waterproof bottom layer and the absorbing layer is not specially limited in the present application, and can be selected according to requirements.

[0040] In the present application, vitamin E or squalane is used as the functional ingredient. First, base oil, emulsifier and phospholipid ingredient are uniformly mixed to obtain an oil phase; then the functional ingredient is uniformly mixed with the oil phase to obtain a gel; and then the gel is mixed with a water phase formed by hexylene glycol and water to obtain a functional ingredient emulsion. The above method can increase the amount of the functional ingredient in the functional ingredient emulsion to about 15%, and the obtained emulsion is uniform and stable, and can be uniformly added to the surface of the non-woven fabric and the sanitary product. Specifically, the functional ingredient emulsion is mixed with water to obtain a spraying liquid, which is sprayed onto the surface of the non-woven fabric. The spraying liquid can be uniformly added to the surface of the non-woven fabric and the sanitary product, and the content of the functional ingredient on the surface of the non-woven fabric can be as high as more than 0.4%, so that the skin care effect is better. DETAILED DESCRIPTION

[0041] It should be understood that the expression "one or more of" individually includes each object recited after the expression and various different combinations of two or more of the recited objects, unless otherwise understood from the context and usage. The expression "and / or" in combination with three or more recited objects should be understood to have the same meaning, unless otherwise understood from the context.

[0042] The terms "comprising", "having" or "including", including the use of their grammatical synonyms, should generally be understood to be open-ended and non-limiting, for example, not excluding other unrecited elements or steps, unless otherwise specifically stated or understood from the context.

[0043] It should be understood that the order of steps or the order of performing certain actions is not important as long as the present application is still operable. In addition, two or more steps or actions can be performed simultaneously.

[0044] The use of any and all examples, or exemplary language, e.g. "such as" or "including", in the present document is intended merely to better illustrate the present application and does not pose a limitation on the scope of the present application unless a claim is presented. No language in the specification should be construed as indicating any non-claimed element as essential to the practice of the present application.

[0045] Further, the numerical ranges and parameters given in the application are approximations, and vary depending, for example, upon the specific type of test method being used. Unless otherwise indicated, all ranges, numbers, values and percentages are approximations, and are intended to be rounded to the nearest significant figure. Unless otherwise indicated, all ranges, numbers, values and percentages are approximations, and are intended to be rounded to the nearest significant figure.

[0046] The application provides a preparation method of a sanitary product, comprising the following steps:

[0047] Step a) mixing the functional ingredient emulsion and water to obtain a spraying liquid;

[0048] The functional ingredient emulsion is prepared according to the following method:

[0049] a1) uniformly mixing base oil, emulsifier and phospholipid ingredient to obtain an oil phase;

[0050] a2) uniformly mixing functional ingredient and the oil phase to obtain a gel;

[0051] a3) mixing the gel and an aqueous phase formed by hexanediol and water to obtain a functional ingredient emulsion;

[0052] The functional ingredient emulsion is at least one of vitamin E emulsion or squalane emulsion;

[0053] Step b) spraying the spraying liquid on non-woven fabric to obtain non-woven fabric added with functional ingredient after drying;

[0054] Step c) preparing a sanitary product with the non-woven fabric added with functional ingredient as a surface layer.

[0055] The application adopts emulsification process and post-spraying process of compound liquid to realize uniform distribution of VE and squalane stock solution and effective component efficacy, in the emulsification process, first, the emulsifier is premixed with the stock solution to form a uniform and stable liquid, then water phase is added for mixing, and finally a uniform and stable liquid is formed through stirring of a homogenizer.

[0056] Specifically, the present application takes vitamin E or squalane as a functional ingredient, first mixes the base oil, emulsifier and phospholipid ingredient uniformly to obtain an oil phase; then mixes the functional ingredient with the oil phase uniformly to obtain a gel; and then mixes the gel with an aqueous phase formed by hexylene glycol and water to obtain a functional ingredient emulsion. The above method can increase the amount of the functional ingredient in the functional ingredient emulsion to about 15%, and then mixes it with water to obtain a spraying liquid, which is sprayed onto the surface of the non-woven fabric, so that the content of the functional ingredient on the surface of the non-woven fabric is high, up to more than 0.4%, and the skin care effect is better.

[0057] The present application will be further described below in combination with examples. The protection scope of the present application is not limited by the following examples.

[0058] Example 1

[0059] I. Preparation of vitamin E emulsion:

[0060] Prepare the emulsion according to the formula shown in Table 1:

[0061] Table 1 Formula of vitamin E emulsion

[0062]

[0063] The preparation method is as follows:

[0064] Preparation of D-phase gel: sequentially add glycerol, hydrogenated lecithin and polysorbate-20 into a vacuum emulsifying pot, stir at a speed of 30 r / min to raise the temperature to 60-65°C, then homogenize at a speed of 2500 r / min for 3-5 min until the material is uniformly formed into a gel without phospholipid particles, and open the cooling water to cool to 40-45°C;

[0065] Sequentially add hexylene glycol and water into a water pot, and stir at a speed of 1200 r / min at room temperature to prepare for use;

[0066] Open the vacuum of the emulsifying pot and maintain the vacuum degree at-0.04 MPa, slowly draw the natural vitamin E into the emulsifying pot under stirring, and observe under a microscope that the natural vitamin E can be wrapped in time, the stirring speed is 40 r / min, and the stirring time is 25-35 min until the material is a viscous to semi-solid gel;

[0067] Slowly draw the water pot phase into the emulsifying pot under the condition of stirring at 20 r / min, observe the change state of the material under a microscope, and the feeding speed can be slightly increased to 30 r / min when the material becomes thinner. After the water phase is added, vacuumize to-0.05 MPa, and rapidly homogenize at 4000 r / min for 5-10 min, observe under a microscope that the material is a uniform liquid, and then detect the material to obtain the vitamin E emulsion.

[0068] (II) Preparation of squalane emulsion:

[0069] The emulsion was prepared according to the formulation shown in Table 2:

[0070] Table 2 Formulation of squalane emulsion

[0071]

[0072] The preparation method is as follows:

[0073] Preparation of phase D gel: glycerol, hydrogenated lecithin and polysorbate-20 were sequentially added to a vacuum emulsifying kettle, and stirred at a speed of 30 rpm to raise the temperature to 60-65°C, and then homogenized at a speed of 2500 rpm for 3-5 min until the material was uniformly gel without lecithin particles, and the cooling water was turned on to cool to 40-45°C;

[0074] Hexanediol and water were sequentially added to a water kettle, and stirred at a speed of 1200 rpm at room temperature to prepare a solution;

[0075] The vacuum of the emulsifying kettle was turned on and maintained at -0.04 MPa, and squalane was slowly drawn into the emulsifying kettle under stirring, and the squalane flowing in was observed to be wrapped in time, the stirring speed was 40 rpm, and the material was stirred for 15-25 min until it became a viscous to semi-solid gel;

[0076] The water kettle phase was slowly drawn into the emulsifying kettle under stirring at a speed of 20 rpm, and the change in the material was observed under a microscope, and the feeding speed was slightly increased to 30 rpm when the material became thinner. After the water phase was added, the vacuum was drawn to -0.05 MPa, and the material was homogenized at a speed of 4000 rpm for 5-10 min, and the material was observed under a microscope to be a uniform liquid, and the material was discharged, and squalane emulsion was obtained.

[0077] III. Preparation of emulsion

[0078] The vitamin E emulsion was placed in a sealed container and stored in a cool, dark, and ventilated place. When used, the package opening was opened, a certain weight of emulsion was taken into a measuring tool using a liquid taking device, and then the measuring tool was placed on a balance to weigh the final weight, and the weight accounted for 6% of the weight of the spraying liquid. The same method was used for squalane emulsion, and the weight accounted for 12% of the weight of the spraying liquid.

[0079] The water treatment system is started, and the normal temperature raw water is filtered by quartz sand, activated carbon and RO membrane in sequence, and then is measured by a flow meter through a diaphragm pump. The weight of the water accounts for 82% of the weight of the spraying liquid. The water is delivered to the liquid preparation tank through a stainless steel pipeline. The homogenizing stirrer of the liquid preparation tank is started, and the rotating speed is controlled at 1000 rpm. Under continuous stirring, the VE solution is slowly poured in. After the addition is completed, the stirring is continued for 15 minutes. Then, 100 ml of the solution is taken by a liquid sampler and is placed for 5 minutes. Under the illumination of ≥500 lux, it is observed whether the solution is uniform and whether there is stratification. After confirming that the solution is uniform and there is no stratification, the homogenizing stirrer is turned off, the slow stirrer is turned on, and the rotating speed is controlled at 45 rpm. The stirring of the solution is continued to obtain the compounded liquid.

[0080] IV. Spraying process of the compounded liquid

[0081] A circular nozzle with a nozzle aperture of 0.5 mm is used. The inlet pipeline of the spraying pump is placed in the compounded liquid. The spraying pump is started, the overflow valve is opened, and the outlet pressure of the pump is controlled at 13 kg. It is observed that the solution flows out of the overflow valve, and the overflow valve is closed. The inlet valve on the nozzle pipeline is opened. After 1 minute, the atomization state of the nozzle is observed. The spraying production line is started, and the speed is controlled at 80 m / min. After drying at a temperature of not more than 115℃ for a duration of not more than 6 seconds, the non-woven fabric is wound to obtain the non-woven fabric added with VE and squalane.

[0082] V. Test of the contents of VE and squalane

[0083] The contents of VE and squalane in the non-woven fabric are determined according to the following method:

[0084] The non-woven fabric is dissolved in a mixed solution of n-hexane and n-butanol with a volume ratio of 1:1. Then, the content of VE or squalane is quantitatively determined by capillary gas chromatography with an internal standard method and a correction factor. The chromatographic conditions are as follows:

[0085] HP-1 capillary column: 0.25 mm x 30 m x 0.32 μm;

[0086] Column room temperature: 262℃;

[0087] Vaporization chamber temperature: 310℃;

[0088] Detector temperature: 310℃;

[0089] Split ratio: 1:20;

[0090] Carrier gas: N2, 35 mL / min;

[0091] Hydrogen: 32 mL / min;

[0092] Air: 300 mL / min;

[0093] Injection volume: 1 μL;

[0094] The results showed that the nonwoven fabric prepared by the method provided in this application contained 0.36% vitamin E and 0.5% squalane.

[0095] The nonwoven fabric with added vitamin E and squalane was aged in a constant temperature chamber at 54℃±1℃ for 7 days. The content of vitamin E and squalane in the fabric was measured according to the above method. The results are as follows: the vitamin E content in the nonwoven fabric is 0.35% and the squalane content is 0.46%.

[0096] Therefore, the method provided in this application can not only add a high content of functional ingredients, but also the functional ingredients are relatively stable and will not be lost due to aging.

[0097] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and application concept of this application, should be included within the scope of protection of this application.

Claims

1. A method for preparing a sanitary product, comprising the following steps: Step a) mixing a functional ingredient emulsion and water to obtain a spraying liquid; The functional ingredient emulsion is prepared according to the following method: a1) uniformly mixing base oil, emulsifier and phospholipid ingredient to obtain an oil phase; a2) uniformly mixing functional ingredient and the oil phase to obtain a gel; a3) mixing the gel and an aqueous phase formed by hexanediol and water to obtain a functional ingredient emulsion; The functional ingredient emulsion is at least one of a vitamin E emulsion or a squalane emulsion; Step b) spraying the spraying liquid on a non-woven fabric to obtain a non-woven fabric added with functional ingredient after drying; Step c) preparing a sanitary product with the non-woven fabric added with functional ingredient as a surface layer.

2. The production method according to claim 1, characterized by, The functional ingredient emulsion is a vitamin E emulsion and a squalane emulsion.

3. The method of claim 2, wherein, The step a) comprises: Mixing a vitamin E emulsion, a squalane emulsion and water to obtain a spraying liquid.

4. The production method according to claim 3, characterized by, The mass ratio of the vitamin E and the squalane is 1:1-5.

5. The preparation method according to any one of claims 1 to 4, characterized in that, The step a2) specifically comprises: Under stirring, uniformly mixing the functional ingredient in the oil phase, the stirring speed is 35-45 rpm, and the vacuum degree is -0.01-0.06 MPa.

6. The method of any one of claims 1 to 5, wherein the method further comprises the step of: The step a3) specifically comprises: Under stirring, adding the aqueous phase to the gel to obtain a functional ingredient emulsion after homogenization, the stirring speed is 15-35 rpm, the vacuum degree of the homogenization is -0.03-0.07 MPa, and the rotation speed of the homogenization is 3000-5000 rpm.

7. The method of any one of claims 1 to 6, wherein the method further comprises the step of: The step a1) specifically comprises: ​ Under stirring, mixing the base oil, the emulsifier and the phospholipid ingredient, and then homogenizing after heating to obtain an oil phase, the stirring speed is 20-40 rpm, the heating temperature is 60-65℃, and the rotation speed of the homogenization is 1500-3000 rpm.

8. The method of any one of claims 1 to 7, wherein the method further comprises the step of: The mass ratio of the base oil, the emulsifier, the phospholipid ingredient, the functional ingredient, the hexanediol and the water is 10-30:1-5:1-10:10-20:1-5:40-60. ​ 9. The process according to any one of claims 1 to 8, characterized in that, The base oil is glycerol; the emulsifier is polysorbate-20; and the phospholipid ingredient is hydrogenated lecithin. 10.A sanitary product comprising a waterproof bottom layer, an absorption layer and a surface layer arranged in sequence, wherein the surface layer is prepared according to the method of any one of claims 1-9.

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