Probiotic fiber non-woven fabric, preparation method thereof and probiotic hygienic product

Abstract

The invention discloses a probiotic fiber non-woven fabric, a preparation method thereof and a probiotic hygienic product, and relates to the technical field of hygienic products. The water-soluble protective agent coated probiotics are added into the first oil agent and / or the second oil agent adopted for oiling, so that the probiotics can be uniformly dispersed on the non-woven fabric, meanwhile, the water-soluble protective agent can avoid failure caused by early release of the probiotics, and due to the fact that the hydrophilicity of the water-soluble protective agent is better, the water-soluble protective agent can be used for oiling the non-woven fabric. Hygienic products such as sanitary towels made of the non-woven fabric are more beneficial to release of probiotics in the use process, and the release efficiency of the probiotics is improved. Meanwhile, the water-soluble protective agent can help the probiotics to be uniformly distributed on the surface of the sanitary towel after being dissolved, so that the effect of enough probiotics can be exerted in the using area of the whole sanitary towel, the situation that the concentration of local probiotics is too high or too low is avoided, and the health problem of the private part of the female is effectively prevented and improved.

Description

Technical Field

[0001] The present invention relates to the technical field of sanitary products, and in particular to a probiotic fiber nonwoven fabric and a preparation method thereof, and a probiotic sanitary product. Background Art

[0002] Probiotics are a class of active microorganisms, mainly including Lactobacillus and Bifidobacterium. Among them, Lactobacillus is the most numerous flora in the vagina of normal women. In a healthy vaginal environment, the abundance of Lactobacillus can reach 97.56-99.99%. Lactobacillus can produce substances such as lactic acid, hydrogen peroxide and some enzymes, which are important guarantees for maintaining the stability of the vaginal microecological environment. Therefore, it is generally believed that adding probiotics to sanitary napkins can help maintain the balance of vaginal flora and keep the female reproductive environment healthy. Based on this, compounding probiotics into sanitary napkins for women is an upgrade of traditional sanitary napkin fabrics, which can provide a green method for preventing and assisting in the treatment of gynecological diseases in daily life, but the existing probiotic sanitary napkins have the problem of slow release of probiotics during use.

[0003] In view of this, the present invention is proposed. Summary of the invention

[0004] The purpose of the present invention is to provide a probiotic fiber nonwoven fabric and a preparation method thereof, and a probiotic sanitary product.

[0005] The present invention is achieved in that:

[0006] In a first aspect, the present invention provides a method for preparing a probiotic fiber non-woven fabric, comprising oiling the fibers obtained by spinning for the first time with a first oil agent, bundling and stretching the fibers to form preformed fibers, and then oiling the preformed fibers for a second time with a second oil agent.

[0007] The first oil agent and / or the second oil agent comprises probiotics coated with a water-soluble protective agent.

[0008] In an optional embodiment, the fineness of the fiber obtained by spinning is 8 to 30 μm.

[0009] Preferably, the material of the fiber includes at least one of polyethylene terephthalate, polyethylene or polypropylene.

[0010] In an alternative embodiment, the hydroprotectant comprises sucrose, maltodextrin, trehalose, sodium citrate, sorbitol and water.

[0011] Preferably, the water-soluble protective agent comprises, by mass percentage, 2-5% sucrose, 5-10% maltodextrin, 10-15% trehalose, 0.1-1% sodium citrate, 0.1-1% sorbitol, and the balance is water.

[0012] In an optional embodiment, the probiotics include at least one of inactivated probiotic powder, probiotic lysate and probiotic fermentation broth.

[0013] Preferably, the probiotics in the first oil agent are probiotic lysate and / or probiotic fermentation broth.

[0014] Preferably, the probiotics in the second oil agent are inactivated probiotic powder.

[0015] In an optional embodiment, the preformed fiber is sequentially preheated with steam and cooled after stretching.

[0016] Preferably, the steam preheating temperature is 90-105°C.

[0017] Preferably, cooling is performed to a temperature of the preformed fiber of < 40°C.

[0018] In an optional embodiment, the second oil agent includes probiotics coated with a water-soluble protective agent, or both the first oil agent and the second oil agent include probiotics coated with a water-soluble protective agent.

[0019] In an optional embodiment, the extension includes a one-stage extension and a two-stage extension.

[0020] Preferably, after each stretching, the fiber is left to stand for 0.1 to 1 second.

[0021] Preferably, the stretching ratio of the first stretching stage is 2 to 3 times, and the stretching ratio of the second stretching stage is 1 to 1.5 times.

[0022] In an optional embodiment, the method further comprises curling and drying the preformed fiber after the second oiling.

[0023] In a second aspect, the present invention provides a probiotic fiber nonwoven fabric, which is prepared by the method of any one of the aforementioned embodiments.

[0024] In a third aspect, the present invention provides a probiotic sanitary product, the preparation material of which includes the non-woven fabric as described in the above embodiment.

[0025] Preferably, the probiotic sanitary product comprises a surface layer, an absorbent core layer and a leakage-proof layer; the material of the surface layer is the non-woven fabric as described in the above embodiment.

[0026] The present invention has the following beneficial effects:

[0027] The present invention provides a probiotic fiber non-woven fabric and a preparation method thereof, and probiotic sanitary products. Since oiling is an indispensable step in the process of preparing the fiber into the non-woven fabric, the probiotics coated with a water-soluble protective agent are added to the first oil agent and / or the second oil agent used in the oiling, so that the probiotics can be evenly dispersed on the non-woven fabric, and the water-soluble protective agent can avoid the failure caused by the premature release of the probiotics. Since the water-soluble protective agent has better hydrophilicity, the sanitary products such as sanitary napkins made of the non-woven fabric are more conducive to the release of probiotics during use, and the release efficiency of the probiotics is improved. At the same time, after the water-soluble protective agent is dissolved, it can also help the probiotics to be evenly distributed on the surface of the sanitary napkin, thereby ensuring that the entire sanitary napkin use area can have enough probiotics to play a role, avoiding the situation where the local probiotic concentration is too high or too low, thereby more effectively preventing and improving health problems in women's private parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 A flow chart of a probiotic fiber nonwoven fabric and a preparation method thereof provided by the present invention;

[0030] Figure 2 This is a physical picture of the probiotic sanitary product provided in Comparative Example 2 of the present invention. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be described clearly and completely below. If the specific conditions are not specified in the embodiments, they are carried out according to conventional conditions or conditions recommended by the manufacturer. If the manufacturer of the reagents or instruments used is not specified, they are all conventional products that can be purchased commercially.

[0032] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0033] Common female hygiene products are mainly sanitary napkins, in addition to other forms of sanitary products such as tampons. These sanitary products usually use non-woven fabrics as materials. Therefore, the quality of non-woven fabrics is closely related to the user experience of sanitary products. Taking sanitary napkins as an example, sanitary napkins mainly include a surface layer, an absorbent core layer, and a leak-proof layer. Non-woven fabrics are widely used in all layers of sanitary napkins, so the development of non-woven fabrics for sanitary products is particularly important.

[0034] As people continue to pursue health, probiotic sanitary napkins as a new product carrying probiotics and their metabolites have gradually attracted people's attention. However, the existing probiotic sanitary napkins have problems such as slow probiotic onset and uneven distribution of probiotics on the surface of sanitary napkins during use. Therefore, the inventor proposes the following solution.

[0035] In a first aspect, the present invention provides a method for preparing a probiotic fiber non-woven fabric, comprising oiling the fibers obtained by spinning for the first time with a first oil agent, bundling and stretching the fibers to form preformed fibers, and then oiling the preformed fibers for a second time with a second oil agent.

[0036] The first oil and / or the second oil include probiotics coated with a water-soluble protective agent, wherein the probiotics are selected from vaginal dominant probiotic powder and are inactivated in advance before use to ensure that they have a stable and good function of regulating the surrounding environment of the vagina.

[0037] Since sanitary napkins and other sanitary products all need to use non-woven fabrics as materials, and non-woven fabrics are made of fibers, oiling is one of the key steps in the process of making non-woven fabrics from fibers. Oiling the fibers is conducive to the orderly arrangement of the fibers, and then the non-woven fabric is prepared. Therefore, the inventor proposes to add probiotics during the oiling process, which is conducive to the uniform distribution of probiotics on the fiber surface.

[0038] However, the inventors have found through long-term research that if probiotics are added directly, the probiotics may be released prematurely and fail to play a role in the use of sanitary napkins. Therefore, a layer of material is coated on the surface of the probiotics to prevent the probiotics from being released prematurely during production or storage, which is conducive to the probiotic sanitary napkins to play a better role.

[0039] The prior art proposes a method of coating probiotics with an oil-soluble protective agent, which solves the problem of premature release of probiotics, but also has some new defects.

[0040] For example, when using oil-soluble protective agents to coat probiotics, it is inevitable to use a large amount of oily materials, which will leave oil stains during the production of non-woven fabrics. For example, when combing fibers, oil wax will be left on the combing machine. These oil stains and oil wax are difficult to clean.

[0041] In addition, in order for probiotics to be used normally, the oil-soluble protective agent on its surface needs to be broken during use so that the probiotics can be released from the oil-soluble protective agent. This requires the oil-soluble protective agent to adopt specific oil removal conditions, and the release conditions of probiotics are more demanding, which increases the process difficulty of non-woven fabric preparation.

[0042] In addition, when the oil-soluble protective agent of the sanitary napkin breaks during use, since the secretions on the surface of the sanitary napkin contain more water, the oil will gather into clumps after the oily components come into contact with water, making it difficult for the probiotics to be evenly distributed on the surface of the sanitary napkin.

[0043] Therefore, the inventor creatively proposed to use a water-soluble protective agent to coat probiotics. Since the solvent in the water-soluble protective agent is water, no oil stains that are difficult to remove will be left during the production process. At the same time, the water-soluble protective agent dissolves in water and can quickly release the probiotics therein. When women use sanitary napkins during menstruation, once there is contact with secretions such as menstrual blood, the water-soluble protective agent will dissolve within a few seconds, and the probiotics can quickly play a role in the local environment, such as regulating the balance of vaginal flora and inhibiting the growth of harmful bacteria. Compared with other non-water-soluble protective agents, it takes effect faster, improves the release efficiency of probiotics, and is conducive to quickly adjusting the environment around the vagina.

[0044] In addition, after the water-soluble protective agent breaks, it is not easy to separate from the secretions on the surface of the sanitary napkin, thus avoiding the phenomenon of probiotics gathering together on the surface of the sanitary napkin. After the water-soluble protective agent dissolves, the diffusion of water can drive the probiotics to be evenly distributed on the entire surface of the sanitary napkin, thus avoiding the situation where the local probiotic concentration of the sanitary napkin is too high or too low, thereby more effectively preventing and improving health problems in women's private parts.

[0045] Furthermore, water-soluble protective agents use water as solvent, which is more environmentally friendly, and the solvent does not contain organic solvents, which is more friendly to the environment and human health. Existing oil-soluble protective agents usually contain organic solvents, which may have an impact on the environment and human health.

[0046] Furthermore, water-soluble protective agents are usually odorless or have a small odor, which can provide a more comfortable use experience. Oil-soluble protective agents may have a more obvious odor, which some users may be more sensitive to.

[0047] Furthermore, water-soluble protective agents do not contain flammable substances, making them safer to use and store. However, oily protective agents contain organic solvents, which are flammable substances, so special attention should be paid to fire safety during production.

[0048] Considering that probiotics coated with water-soluble protective agents have better effects in terms of user experience, safe production, simplified process and uniform distribution of probiotics than probiotics coated with oil-soluble protective agents, the present invention proposes to coat probiotics with water-soluble protective agents.

[0049] However, since the water-soluble protective agent is sensitive to moisture, once the humidity is high during production or storage, the water-soluble protective agent may break, causing the probiotics to be released prematurely. Therefore, how to control the dissolution timing of the water-soluble protective agent to prevent the water-soluble protective agent from dissolving prematurely during the production process and / or storage process, thereby causing the probiotics to be released prematurely, becomes one of the key factors affecting the application of this method.

[0050] Therefore, in view of the above-mentioned characteristics of probiotics coated with water-soluble protective agents, the inventors creatively proposed a method for preparing non-woven fabrics containing probiotics coated with water-soluble protective agents, including two oiling steps, which are performed at intervals. During the two oiling processes, probiotics coated with water-soluble protective agents are added to the oil at least once, so that the probiotics can be more fully attached to the fibers, thereby avoiding the probiotics from being released prematurely before the sanitary napkin is used.

[0051] In an alternative embodiment, in order to effectively coat the probiotics, the water-soluble protective agent includes sucrose, maltodextrin, trehalose, sodium citrate, sorbitol and water.

[0052] Preferably, the water-soluble protective agent comprises 2-5% sucrose, 5-10% maltodextrin, 10-15% trehalose, 0.1-1% sodium citrate, 0.1-1% sorbitol, and the balance is water, by mass percentage. Controlling the ratio of each raw material of the water-soluble protective agent within the above range is conducive to achieving the coating of probiotics while controlling the release of probiotics.

[0053] Furthermore, since the oil agent used in the oiling process is a hydrophilic oil agent, the water-soluble protective agent provided by the present invention has better solubility than the oil-soluble protective agent and other components in the oil agent used in the oiling process, so the probiotics coated with the water-soluble protective agent are more evenly coated on the fiber surface.

[0054] In an optional embodiment, the probiotics include at least one of inactivated probiotic powder, probiotic lysate and probiotic fermentation broth.

[0055] Among them, the inactivated probiotic powder refers to the probiotics that retain the original characteristics of live bacteria but do not have the ability to grow and reproduce. The use of inactivated probiotic powder can avoid defects on the surface of the probiotic sanitary napkin.

[0056] Probiotic lysates are products of probiotic metabolism, transformation or release, which contain probiotic cell wall fragments (such as lactic acid, short-chain fatty acids, bacteriocins) as well as various amino acids, peptides, minerals, etc. These substances can improve the distribution of bacteria around the vagina, create an ideal living environment for probiotics, indirectly inhibit the survival of harmful microorganisms, and help restore the microecological balance near the vagina.

[0057] Probiotic fermentation liquid is the liquid obtained by filtering the bacteria after the probiotic fermentation is completed. It contains a variety of ingredients suitable for the growth of probiotics, which is beneficial to create an ideal living environment for probiotics.

[0058] Among them, the content of probiotics in probiotic lysate and probiotic fermentation broth is relatively low, and the content of probiotics in inactivated probiotic powder is relatively high. In order to avoid the probiotics being released prematurely during the production process, preferably, the probiotics in the first oil agent are probiotic lysate and / or probiotic fermentation broth.

[0059] In order to ensure the content of probiotics so that the probiotic sanitary napkin can better play its role in regulating the environment around the vagina, it is further preferred that the probiotics in the second oil agent are inactivated probiotic powder.

[0060] In an optional embodiment, the preformed fiber is further subjected to steam preheating and cooling in sequence after stretching. Steam preheating is conducive to the smooth process of fiber curling, but in order to ensure that the probiotics added during the second oiling will not be released prematurely, the preformed fiber is further subjected to cooling after steam preheating and before the second oiling.

[0061] Preferably, the steam preheating temperature is 95-105°C.

[0062] Preferably, cooling is performed to a temperature of the preformed fiber of < 40°C.

[0063] In an optional embodiment, during the oiling process, the probiotics coated with the water-soluble protective agent may be added only to the second oil agent, or the probiotics coated with the water-soluble protective agent may be added to both the first oil agent and the second oil agent.

[0064] Only by adding probiotics coated with a water-soluble protective agent to the second oil agent, the second oil agent can carry the probiotics and allow them to attach more firmly to the fiber, which can reduce the amount of probiotics used while ensuring that the probiotics can exert a better environmental regulation effect.

[0065] When probiotics coated with water-soluble protective agents are added to both the first oil agent and the second oil agent, the probiotic sanitary napkin can exert a better effect of regulating the environment around the vagina. After the probiotics in the first oil agent are coated on the fiber surface, the fiber is extended so that the probiotics can be evenly dispersed as the fiber is elongated and can enter the interior of the fiber. The probiotics in the second oil agent are attached to the fiber surface. Therefore, the probiotic sanitary napkin made from the fiber has more available probiotics, and in combination with the preparation method of the present invention, even if probiotics are added during the first oiling process, the probiotics will not be released prematurely.

[0066] In an optional embodiment, the stretching includes one stretching and two stretching. Through the two stretching steps, the fiber can be stably stretched to prevent the fiber from being broken. In addition, adding two stretching steps between the two oiling steps can make the first oiling agent used in the first oiling step better penetrate between the fibers, and if the first oiling agent contains probiotics, it is conducive to the uniform distribution of the probiotics on the fibers.

[0067] Preferably, after each stretching, the fiber is left to stand for 0.5 seconds to ensure that the first oil agent and the second oil agent can better penetrate into the fiber.

[0068] Preferably, in order to prevent the fiber from being broken, the stretching multiple of the first stretching is 2 to 3 times, and the stretching multiple of the second stretching is 1 to 1.5 times. The stretching multiple refers to the length change of the fiber relative to the length before stretching.

[0069] In an optional embodiment, the method further comprises curling and drying the preformed fiber after the second oiling. Curling is beneficial to the stability of the fiber, and drying can shape the fiber.

[0070] In order to solve the problem of surface defects in the back-end non-woven fabric production stage, in an optional embodiment, the fineness of the fiber obtained by spinning is 8 to 30 μm. When the fiber is too fine, it will cause difficulty in combing, so that the surface of the non-woven fabric produced has defects, affecting the appearance and use experience of the sanitary napkin. By increasing the thickness of the fiber and controlling the fiber fineness within the above range, the surface defects of the non-woven fabric can be avoided.

[0071] Preferably, the material of the fiber includes at least one of polyethylene terephthalate (PET), polyethylene (PE) or polypropylene.

[0072] In a second aspect, the present invention provides a probiotic fiber nonwoven fabric for use in sanitary products, which is prepared by the method of any one of the aforementioned embodiments.

[0073] In a third aspect, the present invention provides a probiotic sanitary product, the preparation material of which includes the probiotic fiber non-woven fabric as described in the above embodiment.

[0074] Preferably, the probiotic sanitary product comprises a surface layer, an absorbent core layer and a leakage-proof layer; the material of the surface layer is the non-woven fabric as described in the above embodiment.

[0075] By using any of the above-mentioned probiotic fiber non-woven fabrics as the surface material of probiotic sanitary products, the probiotics on the surface of the non-woven fabric can directly contact the user's skin, so that the probiotics can regulate the environment around the vagina.

[0076] Example 1

[0077] This embodiment provides a method for preparing a probiotic fiber non-woven fabric, comprising the following steps:

[0078] S01. PET and PE are composite-spun to obtain fibers, and the fibers are oiled for the first time. The first oil agent used for the first oiling includes probiotics coated with a water-soluble protective agent.

[0079] The water-soluble protective agent includes 3% sucrose, 6% maltodextrin, 10% trehalose, 0.4% sodium citrate, 0.6% sorbitol, and the balance is water. The concentration of the probiotics in the first oil agent is 0.002%, and the probiotics are inactivated Lactobacillus acidophilus LA88 and Lactobacillus plantarum N13 powder.

[0080] S02. After the first oiling, the fibers are fed through the wire feeding wheel, and the fibers are opened, combed, twisted and bundled. After bundling, the fibers are stretched in one stage and two stages respectively, and the fibers are pulled into long and thin strips. After being preheated with 102°C steam, they are cooled to 36°C to obtain preformed fibers, and the preformed fibers are oiled for the second time.

[0081] The second oiling agent used for the second oiling includes probiotics coated with a water-soluble protective agent. The water-soluble protective agent includes 3% sucrose, 6% maltodextrin, 10% trehalose, 0.4% sodium citrate, 0.6% sorbitol, and the balance is water. The concentration of the probiotics in the second oiling agent is 0.01%, and the probiotics are inactivated Lactobacillus acidophilus LA88 and Lactobacillus plantarum N13 bacterial powder.

[0082] After the second oiling, the obtained nonwoven fabric was curled and dried. The fiber fineness of the nonwoven fabric was 18 μm.

[0083] Example 2

[0084] This embodiment provides a method for preparing a probiotic fiber non-woven fabric, comprising the following steps:

[0085] S01. PET and PE are composite-spun to obtain fibers, and the fibers are oiled for the first time. The first oil agent used for the first oiling does not include probiotics coated with a water-soluble protective agent.

[0086] S02. After the first oiling, the fibers are fed through the wire feeding wheel, and the fibers are opened, combed, twisted and bundled. After the bundling, the fibers are stretched in one stage and two stages respectively, and the fibers are pulled into long and thin strips. After being preheated with 105°C steam, they are cooled to 40°C to obtain preformed fibers, and the preformed fibers are oiled for the second time.

[0087] The second oil used for the second oiling includes probiotics coated with a water-soluble protective agent. The water-soluble protective agent includes 5% sucrose, 8% maltodextrin, 15% trehalose, 0.4% sodium citrate, 0.6% sorbitol, and the balance is water. The concentration of the probiotics in the second oil is 0.01%, and the probiotics are inactivated probiotic powder.

[0088] After the second oiling, the obtained nonwoven fabric was curled and dried. The fiber fineness of the nonwoven fabric was 18 μm.

[0089] Comparative Example 1

[0090] This comparative example provides a method for preparing a probiotic fiber nonwoven fabric, and the specific steps are similar to those of Example 1, except that the probiotics in the first oil agent and / or the second oil agent are coated with an oil-soluble protective agent.

[0091] The composition of the oil-soluble protective agent is calculated by mass fraction, including 10% linolenic acid, 15% trehalose, 5% glycerol, 6% lauryl alcohol, 2% L-arginine, 1% conjugated linolenic acid, and the balance is water.

[0092] Comparative Example 2

[0093] This comparative example provides a method for preparing a probiotic fiber nonwoven fabric, and the specific steps are similar to those of Example 1, except that the fineness of the fiber is 12 to 14 μm.

[0094] Comparative Example 3

[0095] This comparative example provides a method for preparing a probiotic fiber nonwoven fabric. The specific steps are similar to those of Example 1, except that the stretching is performed once to the same fiber length as that of Example 1.

[0096] Test Example 1

[0097] The nonwoven fabrics obtained by the methods of Examples 1 to 2 and Comparative Examples 1 to 3 were subjected to antibacterial testing and surface defect testing to obtain the results shown in Table 1 and Figure 2 Results shown.

[0098] The antibacterial detection method is: GB 15979-2024E 6.3: Carrier antibacterial test.

[0099] The surface defect detection method is: determine the size of the stain according to the dust standard diagram, and the qualified standard is: ① (0,1) mm 2 Stains: ≤0.05 / ㎡; ②≥1mm 2 Stains: Not allowed.

[0100] Table 1 Antibacterial properties of nonwoven fabrics

[0101]

[0102] From Table 1 and Figure 2 It can be seen that the non-woven fabric obtained by the method provided in the embodiment of the present invention has a smooth surface without defects and also has a good antibacterial effect. Comparative Example 1 Due to the fiber adhered with an oil-soluble protective agent, during the fiber combing process, the oily substance is easily scraped on the combing needle and gradually accumulated, resulting in difficulty in combing the fiber combing machine, and the oily substance accumulated after long-term production is easy to form defects on the surface of the probiotic non-woven fabric, resulting in the appearance of the probiotic non-woven fabric being unqualified. The fiber used in Comparative Example 2 is relatively fine. When the probiotics coated with the water-soluble protective agent of the present invention are processed, it is easy to form defects on the surface of the probiotic non-woven fabric, resulting in the appearance of the probiotic non-woven fabric being unqualified. Comparative Example 3 adopts one-time stretching, and the stretching multiple of the fiber is too large, which is easy to form defects on the surface of the probiotic non-woven fabric.

[0103] Test Example 2

[0104] The non-woven fabrics obtained by the methods of Examples 1 to 2 and Comparative Examples 1 to 3 were prepared into probiotic sanitary napkins, and the non-woven fabrics were located on the surface layer of the probiotic sanitary napkins. The release effect of the probiotics and lactic acid active ingredients in the probiotic sanitary napkins can be determined based on the pH value change trend of the non-woven fabrics detected. The faster the pH value decreases, the shorter the release time; the lower the pH value, the higher the release amount. The test method is: GB / T 30133-2022, and the results shown in Table 2 are obtained.

[0105] Table 2 Performance of probiotic hygiene products

[0106] pH Release time Example 1 4.5 10min Example 2 4.7 15min Comparative Example 1 5.7 30min Comparative Example 2 4.7 10min Comparative Example 3 4.8 12min

[0107] As can be seen from Table 2, after the non-woven fabric obtained by the method provided in the embodiment of the present invention is prepared into a probiotic sanitary napkin, it has a good effect of reducing the pH value and takes the shortest time, which indirectly illustrates that the probiotic non-woven fabric provided by the method has the effect of fast release of probiotic powder and its fermented substances and a large release amount. Comparative Example 1 Since the oily protective agent material dissolves slowly in the 0.9% sodium chloride solution in the pH test experiment, the probiotic powder and its fermented substances are released slowly and in a low amount.

[0108] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for preparing a probiotic fiber nonwoven fabric, characterized in that: The method comprises applying oil to the fibers obtained by spinning for the first time with a first oil agent, bundling and stretching the fibers to form preformed fibers, and applying oil to the preformed fibers for the second time with a second oil agent; The first oil agent and / or the second oil agent comprises probiotics coated with a water-soluble protective agent.

2. The preparation method according to claim 1, characterized in that: The fineness of the fiber obtained by spinning is 8 to 30 μm; Preferably, the material of the fiber includes at least one of polyethylene terephthalate, polyethylene or polypropylene.

3. The method according to claim 1, characterized in that The water-soluble protective agent includes sucrose, maltodextrin, trehalose, sodium citrate, sorbitol and water; Preferably, in terms of mass percentage, the water-soluble protective agent includes 2-5% sucrose, 5-10% maltodextrin, 10-15% trehalose, 0.1-1% sodium citrate, 0.1-1% sorbitol, and the balance is water.

4. The preparation method according to claim 1, characterized in that: The probiotics include at least one of inactivated probiotic powder, probiotic lysate and probiotic fermentation liquid; Preferably, the probiotics in the first oil agent are probiotic lysates and / or probiotic fermentation broth; Preferably, the probiotics in the second oil agent are inactivated probiotic powder.

5. The preparation method according to claim 1 or 4, characterized in that: After the stretching, the preformed fiber is sequentially steam preheated and cooled; Preferably, the steam preheating temperature is 95-105°C; Preferably, cooling is performed to a temperature of the preformed fiber of < 40°C.

6. The preparation method according to claim 1, characterized in that: The second oil agent includes probiotics coated with a water-soluble protective agent, or both the first oil agent and the second oil agent include probiotics coated with a water-soluble protective agent.

7. The preparation method according to claim 1, characterized in that: The extension includes a first extension and a second extension; Preferably, after each stretching, the fiber is left to stand for 0.1 to 1 second; Preferably, the stretching ratio of the first stretching stage is 2 to 3 times, and the stretching ratio of the second stretching stage is 1 to 1.5 times.

8. The preparation method according to claim 1, characterized in that: The method further comprises curling and drying the preformed fiber after the second oiling.

9. A probiotic fiber nonwoven fabric, characterized in that: Prepared by the method described in any one of claims 1 to 8.

10. A probiotic hygiene product, characterized in that: The preparation material comprises the nonwoven fabric as claimed in claim 9; Preferably, the probiotic sanitary product comprises a surface layer, an absorbent core layer and a leak-proof layer; the material of the surface layer is the non-woven fabric as claimed in claim 9.

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