Sanitary core body containing biological enzyme and sterilization wrapping layer and preparation method of sanitary core body

Abstract

The invention belongs to the technical field of hygienic products, and particularly relates to a hygienic core containing biological enzymes and a bacteriostatic wrapping layer and a preparation method thereof.The hygienic core comprises the wrapping layer, a layered core body is arranged in the wrapping layer, and the biological enzymes for decomposing bacteria and peculiar smell molecules are distributed in the wrapping layer and the layered core body; the biological enzyme is added in a spraying or dipping manner; the layered core body comprises a reinforcing layer arranged in a wrapping layer, and flow guide layers and absorption layers are sequentially and alternately arranged on the reinforcing layer. The flow guide layers and the absorption layers are alternately arranged from top to bottom for not less than two times; the wrapping layer is made of one or more of non-woven fabric, hot air cloth, water stain cloth, pure cotton cloth, fluffy cloth and small white paper; through the unique multi-layer structural design, the wrapping layer material subjected to special treatment and the application of the biological enzyme, the efficient antibacterial function is achieved, and the health and comfort of children, old people and women in the menstrual period can be effectively guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of sanitary napkins, and particularly relates to a sanitary core body containing an antibacterial wrapping layer containing biological enzymes and a preparation method thereof. Background Art

[0002] As essential care products, the safety and functionality of sanitary products directly impact the health of their users. Traditional sanitary products typically utilize nonwoven, spunlace, and cotton outer layers with a polymer absorbent core structure, using metal materials and chemical antimicrobial agents to achieve basic protection. However, as consumers demand increased comfort, antimicrobial efficacy, and environmental protection, existing technologies have exposed the following significant shortcomings.

[0003] Problems with existing technologies: In terms of antibacterial properties, traditional metal preparations and chemical antibacterial agents have significant shortcomings. Both have a short antibacterial effect, and long-term contact with the human body can easily produce chemical residues, which may cause skin irritation or allergic reactions, failing to meet modern consumers' demand for natural and safe antibacterial methods. Furthermore, the absorption structure design of traditional cores is relatively simple, and the synergy between the diversion layer and the absorption layer is insufficient, resulting in slow liquid absorption and uneven distribution. This is prone to local saturation, which in turn causes reverse osmosis and side leakage, seriously affecting the user experience. Furthermore, when it comes to odor treatment, traditional technologies often use fragrances to mask the odor rather than fundamentally breaking down odor molecules, which cannot effectively solve the problem of urine, stool, and menstrual odor. Summary of the Invention

[0004] The purpose of the present invention is to provide a sanitary core body containing a biological enzyme antibacterial coating layer and a preparation method thereof, which can achieve efficient antibacterial function through a unique multi-layer structure design, specially treated coating layer materials and the application of biological enzymes, and can effectively protect the health and comfort of users.

[0005] The technical solutions adopted by the present invention are as follows: A sanitary core body containing an antibacterial coating layer containing a biological enzyme, comprising a coating layer, a layered core body disposed within the coating layer, and biological enzymes for decomposing bacteria and odor molecules distributed in the coating layer and the layered core body, wherein the biological enzymes are added by spraying or dipping; The layered core comprises a reinforcement layer arranged in a wrapping layer, and a guide layer and an absorption layer are alternately arranged on top of the reinforcement layer.

[0006] The guide layer and the absorption layer are alternately arranged from top to bottom for at least two times.

[0007] The wrapping layer material is selected from one or more of non-woven fabrics, hot air fabrics, spunlace fabrics, pure cotton fabrics, fluffy fabrics, and small white paper.

[0008] The absorption layer is made by mixing high water-absorbent resin with fluff pulp or ultra-fine flow-guiding fibers.

[0009] The guide layer is made of ultra-fine guide fiber material by adopting non-woven fabric spunmelt and hydrophilic technology.

[0010] The biological enzyme is selected from at least one of lysozyme, lipase and protease.

[0011] A method for preparing a sanitary core containing a biological enzyme and a sterilization coating layer comprises the following steps: Step 1: Prepare the core body. Mix the super absorbent resin and fluff pulp in proportion. Spin the absorbent layer through high-temperature air-spinning. The thickness is 1.2-8mm. Then roll and cut. The ultra-fine flow-guiding fiber material is processed by non-woven fabric spunmelt and hydrophilic technology to form a flow-guiding layer. The layers are stacked in the designed order and fixed by heat pressing and bonding to form a layered core. Step 2: Wrapping layer treatment: one or more materials among the spunlace hot air cloth, non-woven fabric, and small white paper are subjected to hydrophilic and antibacterial treatment, and then a roller-rotating liquid coating method is used to apply a mixture of biological enzymes and hydrophilic agents to the surface of the wrapping layer material, which is then dried into a roll, and the hot air cloth is coated with an antibacterial agent; Step 3: adding the bio-enzyme, making the bio-enzyme into a solution, and adding it to the guide layer and the absorption layer of the layered core by spraying or dipping; Step 4: Finished product production: According to the core specifications, the layered core is coated with a wrapping layer, rolled up, and cut into pieces. The layered core is wrapped using ultrasonic welding, hot melt adhesive bonding, and hot pressing processes to form a sanitary core.

[0012] In the step 2, the drying is carried out using a low-temperature hot air circulation drying technology, the drying temperature is controlled at 40-85° C., and the drying time is 0.1 hour.

[0013] In the step 3, the concentration of the biological enzyme solution is 3%-20%, when added by spraying, the spraying pressure is 0.1-0.6 MPa, and the spraying amount is 3-15 g / m²; when added by immersion, the immersion time is 3 seconds.

[0014] In step 4, the heat sealing process parameters are: temperature 120-150°C, pressure 1-2 MPa, and time 5-10 seconds; the bonding process parameters are: using environmentally friendly hot melt adhesive, applying it to the edge of the wrapping layer material, with a coating amount of 10-20 g / m², and curing at room temperature for 30-60 minutes.

[0015] The technical effects achieved by the present invention are: The sanitary napkin core of the present invention achieves efficient sterilization and disinfection functions through a unique multi-layer structure design, specially treated wrapping layer materials, and the application of biological enzymes, can effectively ensure the health and comfort of women during their menstrual period, and has good market application prospects.

[0016] The absorption layer provided in the present invention is made of a reasonable ratio of highly absorbent resin, fluff pulp and ultra-fine sterilized hydrophilic fiber, so that it can accelerate absorption and lock liquid, prevent reverse osmosis and leakage, improve absorption speed and capacity, and reduce the risk of side leakage; the guide layer is made of special fiber material, which can quickly and evenly disperse the liquid to the absorption layer, ensuring uniform absorption and avoiding local saturation.

[0017] The biological enzyme provided in the present invention is extracted and produced using bioengineering technology. It is a natural active biological enzyme. It is added to a specific layer of the core or combined with the wrapping layer material so that it is activated when it encounters liquid and decomposes bacteria and odor molecules, which can effectively reduce menstrual odor and reduce the risk of infection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the sanitary core of the present invention; Figure 2 It is a block diagram of the method for preparing the sanitary core of the present invention.

[0019] In the accompanying drawings, the components represented by the reference numerals are as follows: 1. Wrapping layer; 2. Diversion layer; 3. Absorption layer; 4. Reinforcement layer. DETAILED DESCRIPTION

[0020] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is described in detail below with reference to the following examples. It should be understood that the following text is only used to describe one or more specific embodiments of the present invention and does not strictly limit the scope of protection of the present invention.

[0021] like Figure 1 As shown, a sanitary core containing a biological enzyme and a sterilization wrapping layer includes a wrapping layer 1. The wrapping layer 1 is made of one or more materials selected from non-woven fabrics, hot air cloth, water-soaked cloth, pure cotton cloth, fluffy cloth, and small white paper. A layered core is provided inside the wrapping layer 1. Biological enzymes for decomposing bacteria and odor molecules are distributed in the wrapping layer 1 and the layered core. The biological enzymes are selected from at least one of lysozyme, lipase, and protease. The biological enzymes are added by spraying or dipping. The layered core comprises a reinforcing layer 4 disposed within a wrapping layer 1, with a guide layer 2 and an absorbent layer 3 alternately arranged above the reinforcing layer 4, wherein the guide layer 2 and the absorbent layer 3 are alternately arranged from top to bottom at least twice; The absorption layer 3 is made of a mixture of highly absorbent resin and fluff pulp or ultra-fine flow-guiding fibers. The guide layer 2 is made of ultra-fine guide fiber material using non-woven fabric hydrophilic technology.

[0022] According to the above structure, the provided wrapping layer 1 and the layered core enable the various layers of the sanitary core to work synergistically and optimize the absorption performance; the provision of the absorption layer 3 enables the sanitary core to accelerate absorption and lock the liquid, prevent reverse osmosis and leakage, improve the absorption speed and capacity, and reduce the risk of side leakage; the provided guide layer 2 can quickly and evenly disperse the liquid to the absorption layer 3 to ensure uniform absorption and avoid local saturation; the provided biological enzyme is added to the layered core and combined with the material of the wrapping layer 1. When the biological enzyme contacts the liquid, it quickly takes effect, which can effectively reduce menstrual odor and reduce the risk of infection; through the unique multi-layer structure design, specially treated wrapping layer materials and the application of biological enzymes, efficient sterilization and disinfection functions are achieved, which can effectively protect the health and comfort of users and has good market application prospects.

[0023] like Figure 2 As shown, a method for preparing a sanitary core containing a biological enzyme and a sterilization coating layer comprises the following steps: Step 1: Core preparation: Superabsorbent resin and fluff pulp are mixed in proportion, and the absorbent layer 3 is formed by high-temperature air-spinning to a thickness of 1.2-8 mm, which is then rolled and slit. Ultra-fine flow-guiding fiber material is treated with non-woven fabric melt-spinning and hydrophilic technology to form the flow-guiding layer 2. The layers are stacked in the designed order and fixed by heat pressing and bonding to form a layered core. Step 2: Wrapping layer treatment: one or more materials selected from non-woven fabric, spunlace hot air cloth, and small white paper are subjected to hydrophilic and antibacterial treatment, and then a roller-rotating liquid coating method is used to apply a mixture of biological enzyme and hydrophilic agent to the surface of the wrapping layer 1 material, and the roll is dried into a roll, and the hot air cloth is coated with an antibacterial agent to achieve a sterilization function; the drying adopts low-temperature hot air circulation drying technology, the drying temperature is controlled at 40-85°C, and the time is 0.1 hour; Step 3: Adding bio-enzymes: Prepare a solution of natural active bio-enzymes and add it to the guide layer 2 and absorption layer 3 of the layered core by spraying or dipping to ensure that the bio-enzymes are evenly distributed and remain active. The concentration of the bio-enzyme solution is 3%-20%. When adding by spraying, the spraying pressure is 0.1-0.6MPa and the spraying amount is 3-15g / m². When adding by dipping, the soaking time is 1 minute. Step 4, finished product production: According to the core specifications, the layered core is covered with the wrapping layer 1, rolled, and slit, and the layered core is wrapped using ultrasonic welding, hot melt adhesive bonding and hot pressing processes; the heat sealing process parameters are: temperature 120-150°C, pressure 1-2MPa, time 5-10 seconds; the bonding process parameters are: use environmentally friendly hot melt adhesive, apply it to the edge of the wrapping layer material, the coating amount is 10-20g / m², and cure at room temperature for 30-60 minutes to produce a sanitary core.

[0024] Example 1 Hygienic core preparation Core preparation: Superabsorbent resin and fluff pulp are mixed in a certain mass ratio, and a web is formed by high-temperature air-spinning to form an absorbent layer 3 with a thickness of 2mm-8mm. The web is then rolled and slit. The ultra-fine flow-guiding fiber material is treated with non-woven fabric spunmelt and hydrophilic technology to form a flow-guiding layer 2. The reinforcing layer 4, the flow-guiding layer 2, and the absorbent layer 3 are stacked in the order of flow-guiding layer 2, absorbent layer 3, flow-guiding layer 2, absorbent layer 3, alternating twice, and fixed by hot pressing and bonding to form a layered core. Wrapping layer treatment: Non-woven fabric is selected as the wrapping layer 1 material, and it is subjected to hydrophilic and antibacterial treatment. A 10% concentration of natural active lysozyme and a hydrophilic agent mixture is coated on the surface of the non-woven fabric using the roller transfer liquid coating method. The non-woven fabric is then dried at a temperature of 40°C-85°C for 0.1 hour using low-temperature hot air circulation drying technology to form a roll, and the material is treated with an antibacterial coating. Enzyme addition: Lysozyme is prepared into a 10% solution and added to the guide layer 2 and the absorption layer 3 of the layered core by spraying. The spraying pressure is 0.3MPa and the spraying amount is 8g / m² to ensure that the enzyme is evenly distributed and remains active. Finished product production: According to the core specifications, the layered core is covered with treated non-woven fabric, rolled, slit, and bonded using a hot melt adhesive process. A coating of 15g / m² of environmentally friendly hot melt adhesive is applied to the edge of the wrapping material and cured at room temperature for 30-60 minutes to produce a hygienic core. Example 2 Hygienic core preparation Core preparation: Superabsorbent resin and ultrafine flow-guiding fibers are mixed in a certain mass ratio and laid out through high-temperature air-spinning to form an absorbent layer 3 with a thickness of 2mm-8mm. The layer is then rolled and slit. The ultrafine flow-guiding fiber material is treated with a non-woven fabric spunmelt and hydrophilic technology to form a flow-guiding layer 2. The reinforcing layer 4, the flow-guiding layer 2, and the absorbent layer 3 are stacked in the order of flow-guiding layer 2, absorbent layer 3, flow-guiding layer 2, absorbent layer 3, and flow-guiding layer 2, alternating three times. The layers are then fixed by hot pressing and bonding to form a layered core. Wrapping layer treatment: A combination of hot air cloth and small white paper is used as the wrapping layer 1 material, which is subjected to hydrophilic and antibacterial treatment. A 15% concentration of a mixture of natural active lipase and a hydrophilic agent is applied to the surface of the material using the roller transfer liquid coating method. The material is then dried at a temperature of 40°C-85°C for 0.1 hour using low-temperature hot air circulation drying technology to form a coiled material. The material is then coated with an antibacterial agent. Enzyme addition: Prepare a 3-20% solution of the enzyme and add it to the guide layer 2 and the absorption layer 3 of the layered core by spraying or dipping for 1 minute to ensure that the enzyme is evenly distributed and remains active. Finished product production: According to the core specifications, the layered core is covered with the processed wrapping material, rolled up, and cut. Ultrasonic welding and hot pressing processes are used. The heat sealing temperature is 130℃, the pressure is 1.5MPa, and the time is 5-10 seconds to make a sanitary core.

[0025] Example 3 Hygienic core preparation Core Preparation: Superabsorbent resin and fluff pulp are mixed in a certain mass ratio and laid through high-temperature air-spinning to form an absorbent layer 3 with a thickness of 2-8 mm. The layer is then rolled and slit. The ultra-fine flow-guiding fiber material is treated with a non-woven fabric hydrophilic technology to form a flow-guiding layer 2. The reinforcement layer 4, the flow-guiding layer 2, and the absorbent layer 3 are stacked in this order, alternating twice. The layers are then fixed by hot pressing and bonding to form a layered core. Wrapping layer treatment: Use non-woven fabric or pure cotton fabric as the wrapping layer 1 material, and perform hydrophilic and antibacterial treatment on it. Use roller transfer liquid coating method to apply a mixture of biological enzyme and hydrophilic agent with a concentration of 3-15% on the surface of the material. Use low-temperature hot air circulation drying technology to dry it at a temperature of 40-85℃ for 0.1 hour to form a coiled material, and then perform antibacterial coating treatment on the material. Enzyme addition: Prepare the enzyme into a solution with a concentration of 3-20%, and add it to the guide layer 2 and the absorption layer 3 of the layered core by spraying. The spraying pressure is 0.1MPa and the spraying amount is 10-20g / m² to ensure that the enzyme is evenly distributed and remains active. Finished product production: According to the core specifications, the layered core is covered with treated pure cotton cloth, rolled up, and slit. The hot melt adhesive bonding process is used. The environmentally friendly hot melt adhesive with a coating amount of 10g / m² is applied to the edge of the wrapping material and cured at room temperature for 30-60 minutes to produce a hygienic core.

[0026] The sanitary cores prepared by the above embodiments have been tested to have good absorption performance, fast absorption speed, large capacity, and significantly reduced reverse osmosis and leakage; at the same time, the odor treatment effect is significant, which can effectively reduce the risk of infection and achieve the intended purpose of the invention.

[0027] The foregoing is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art may make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications are also within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained herein shall, unless otherwise specified or limited, be implemented in accordance with conventional means in the art.

Claims

1. A sanitary core body containing an antibacterial coating layer of a biological enzyme, comprising a coating layer (1), characterized in that: A layered core is provided inside the wrapping layer (1), and biological enzymes for decomposing bacteria and odor molecules are distributed in the wrapping layer (1) and the layered core, and the biological enzymes are added by spraying or dipping; The layered core comprises a reinforcement layer (4) arranged in a wrapping layer (1), and above the reinforcement layer (4) are alternately arranged a guide layer (2) and an absorption layer (3).

2. The sanitary core containing an antibacterial coating layer containing a biological enzyme according to claim 1, characterized in that: The guide layer (2) and the absorption layer (3) are alternately arranged from top to bottom at least twice.

3. The sanitary core containing an antibacterial coating layer containing a biological enzyme according to claim 1, characterized in that: The material of the wrapping layer (1) is selected from one or more of non-woven fabric, hot air cloth, water-soaked cloth, pure cotton cloth, fluffy cloth, and small white paper.

4. The sanitary core containing an antibacterial coating layer containing a biological enzyme according to claim 1, characterized in that: The absorption layer (3) is made by mixing highly absorbent resin with fluff pulp or ultra-fine flow-guiding fibers.

5. The sanitary core containing an antibacterial coating layer containing biological enzymes according to claim 1, characterized in that: The guide layer (2) is made of ultra-fine guide fiber material using non-woven fabric hydrophilic technology.

6. The sanitary core containing an antibacterial coating layer containing biological enzymes according to claim 1, characterized in that: The biological enzyme is selected from at least one of lysozyme, lipase and protease.

7. A method for preparing a sanitary core body containing an antibacterial coating layer of a biological enzyme, used for the sanitary core body containing an antibacterial coating layer of a biological enzyme according to any one of claims 1 to 6, characterized in that: The following steps are involved: Step 1: prepare the core body, mix the super absorbent resin and fluff pulp in proportion, and make the absorbent layer (3) by high-temperature air-spinning with a thickness of 1.2-8 mm, and then roll and cut. The ultra-fine flow-guiding fiber material is treated with a non-woven fabric melt-spun hydrophilic technology to form a flow-guiding layer (2), and each layer is stacked in a designed order and fixed by heat pressing and bonding to form a layered core; Step 2: wrapping layer treatment, wherein one or more materials selected from the group consisting of spunlace hot air cloth, non-woven fabric, and small white paper are subjected to hydrophilic and antibacterial treatment, and then a roller-type liquid coating method is used to coat the surface of the wrapping layer (1) with a mixture of enzyme and hydrophilic agent, and the mixture is dried into a roll; Step 3: adding the bio-enzyme, preparing the bio-enzyme into a solution, and adding the solution to the guiding layer (2) and the absorbing layer (3) of the layered core by spraying or dipping; Step 4, finished product production, according to the core specifications, the layered core is coated with a wrapping layer (1), rolled up, cut, and the layered core is wrapped using ultrasonic welding, hot melt adhesive bonding and hot pressing processes to make a sanitary core.

8. The method for preparing a sanitary core containing a biological enzyme and a sterilization coating according to claim 7, characterized in that: In the step 2, the drying is carried out using a low-temperature hot air circulation drying technology, the drying temperature is controlled at 40-85° C., and the drying time is 0.1 hour.

9. The method for preparing a sanitary core containing a biological enzyme and a sterilization coating according to claim 7, characterized in that: In the step 3, the concentration of the biological enzyme solution is 3%-20%. When adding by spraying, the spraying pressure is 0.1-0.6 MPa, and the spraying amount is 3-15 g / m²; when adding by immersion, the soaking time is 3-15 minutes.

10. The method for preparing a sanitary core containing a biological enzyme and a sterilization coating according to claim 7, characterized in that: In step 4, the heat sealing process parameters are: temperature 120-150°C, pressure 1-2 MPa, and time 5-10 seconds; the bonding process parameters are: using environmentally friendly hot melt adhesive, applying it to the edge of the wrapping layer material, with a coating amount of 10-20 g / m², and curing at room temperature for 30-60 minutes.

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