A soft and breathable sanitary napkin

Abstract

The utility model discloses a soft and breathable sanitary napkin, which aims to solve the shortcomings of existing sanitary napkins in terms of leak-proof performance. The sanitary napkin includes a guide layer, a quick-drying layer, an absorption layer and a leak-proof back layer, wherein the leak-proof back layer is the key innovation of the present invention. The leak-proof back layer is made of waterproof and breathable material, has a multi-layer composite structure and an edge sealing design, and is formed by a heat sealing process, thereby ensuring that liquid cannot penetrate into clothing while maintaining good air permeability. In addition, the leak-proof back layer is also soft, scalable and quiet, providing a more comfortable use experience. The present invention effectively prevents liquid side leakage and back leakage by optimizing the structure and material selection of the sanitary napkin, thereby improving the overall performance and user satisfaction of the sanitary napkin.

Description

Technical Field

[0001] The utility model relates to the technical field of sanitary products, and more specifically to a soft and breathable sanitary napkin. Background Art

[0002] In the field of sanitary napkin manufacturing and design, there has long been a demand to improve product performance, enhance comfort and reduce side leakage and back leakage. Although traditional sanitary napkin products have improved their absorption capacity, there is still room for improvement in leakage prevention. During use, users often encounter problems with side and back leakage of liquid, especially when they are active or sleeping at night, which not only affects the quality of life of users, but also causes pollution to clothing and bed sheets.

[0003] Existing sanitary napkin products usually include basic structures such as an absorbent layer, leak-proof sides and a back layer. The absorbent layer is responsible for absorbing and locking liquids, the leak-proof sides are used to prevent liquids from overflowing from both sides, and the back layer mainly prevents liquids from penetrating into clothing. However, traditional back layer materials often only focus on waterproof performance and ignore breathability, which may cause users to feel stuffy and airtight when using, thus affecting comfort.

[0004] In addition, the backing material of traditional sanitary napkins is also insufficient in softness and adaptability, which may lead to insufficient fit between the sanitary napkin and the body, increasing the risk of side leakage and back leakage. Especially when the user bends, sits or walks, the movement of the sanitary napkin may cause gaps between the absorbent layer and the body, giving liquid the opportunity to leak out from these gaps.

[0005] Therefore, the market has an urgent need for a new type of sanitary napkin that can effectively prevent side leakage and back leakage, and provide good air permeability and comfortable fit. Based on this market demand, the present invention provides a soft and breathable sanitary napkin through innovative design and material selection, especially the design of its anti-leakage back layer, aiming to solve the above problems in the prior art. Utility Model Content

[0006] In view of this, the utility model provides a soft and breathable sanitary napkin.

[0007] To achieve the above purpose, the utility model provides the following technical solutions, including: an absorption layer and a guide layer heat-pressed on the absorption layer to quickly guide the liquid to the absorption layer, the absorption layer is bonded to the quick-drying layer by an adhesive, the quick-drying layer is used to accelerate the transfer of liquid to the absorption layer and promote surface drying, and the anti-leakage back layer is heat-pressed on the bottom of the quick-drying layer to prevent liquid from penetrating to the outside

[0008] Preferably, in the above-mentioned soft breathable sanitary napkin, the absorption layer is composed of a three-layer structure, the upper layer is composed of a thin layer of super absorbent resin and fiber mixture, which can quickly absorb liquid and prevent surface re-seepage, the middle layer is composed of cellulose fibers and super absorbent resin arranged in an alternating manner to form a porous structure to increase the liquid storage capacity, and the lower layer is composed of a mixture of absorbent resin and a small amount of fiber to further enhance the water absorption capacity and is tightly combined with the quick-drying layer.

[0009] Preferably, in the above-mentioned soft breathable sanitary napkin, the guide layer is formed by hot pressing of non-woven fabric, perforated film and fiber mesh, and a plurality of holes are provided in the central part and the edge part of the guide layer, and the diameter of the holes in the central part is larger than that in the edge part, so as to ensure that the liquid can pass through quickly and be evenly distributed to prevent side leakage.

[0010] Preferably, in the above-mentioned soft breathable sanitary napkin, the quick-drying layer is a mesh structure, and the polyester, resin and cellulose fibers are combined together by heat pressing, so that the surface can dry quickly after the liquid is absorbed.

[0011] Preferably, in the above-mentioned soft breathable sanitary napkin, the leakage-proof back layer is formed by heat-sealing a polyethylene film and a polyurethane film.

[0012] It can be seen from the above technical solutions that compared with the prior art, the utility model discloses a soft and breathable sanitary napkin. The utility model is excellent in preventing liquid side leakage and back leakage through innovative multi-layer structure design and selection of high-performance materials. Especially when the user is performing various daily activities, it can ensure that the sanitary napkin is closely fitted to the body, thereby reducing the risk of liquid overflowing from the side and back. The utility model adopts a highly efficient absorption material, which can quickly absorb and lock a large amount of liquid, and significantly improves the absorption capacity and quick-drying performance of the sanitary napkin. This not only increases the use time, reduces the replacement frequency, but also improves the overall use experience. The leak-proof back layer of the utility model uses a material with good air permeability, which effectively reduces the stuffiness and wet stickiness during use and improves the user's comfort. The air permeability design ensures air circulation, keeps the skin dry, and reduces skin problems caused by moisture. The utility model enhances the softness and fit of the sanitary napkin by optimizing the material and structural design, and adapts to the use requirements of different body shapes and activity states. The soft back layer material fits closely to the body curve, reduces the gap caused by the movement of the sanitary napkin, and improves the leak-proof effect. The utility model pays attention to environmental protection in material selection and manufacturing process, and tries to use degradable materials and environmentally friendly manufacturing processes to reduce negative impacts on the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0014] Figure 1 The accompanying drawing is a schematic diagram of the main structure of the utility model.

[0015] Figure 2 The accompanying drawing is a schematic diagram of the absorption layer of the utility model. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] Please see attached Figure 1-2 , a soft and breathable sanitary napkin disclosed by the utility model.

[0018] The utility model comprises an absorption layer 1, a guide layer 2, a quick-drying layer 3 and a leak-proof back layer 4.

[0019] Relationship between the absorption layer 1 and the diversion layer 2: The absorption layer 1 is located on the top of the sanitary napkin and directly contacts the user's skin. The diversion layer 2 is located above the absorption layer 1, and the two are fixed by heat pressing or adhesive to ensure that the diversion layer 2 is tightly attached to the absorption layer 1, while allowing liquid to quickly penetrate into the absorption layer 1 through the diversion layer 2. The design of the diversion layer 2 allows liquid to spread quickly on the surface, reducing local oversaturation and improving overall absorption efficiency.

[0020] Relationship between the guide layer 2 and the quick-drying layer 3: The quick-drying layer 3 is located below the absorbent layer 1 and is connected to the guide layer 2 by mechanical fixation (such as sewing or ultrasonic welding) or adhesive. The highly breathable material of the quick-drying layer 3 allows liquid to quickly transfer downward to the absorbent layer 1, while promoting the evaporation of surface moisture to keep the surface of the sanitary napkin dry.

[0021] Relationship between quick-drying layer 3 and anti-leakage back layer 4: The anti-leakage back layer 4 is located at the bottom of the sanitary napkin and is tightly bonded to the quick-drying layer 3 through adhesive or thermal pressing technology. The waterproof material of the anti-leakage back layer 4 effectively prevents liquid from penetrating to the outside while maintaining a certain degree of air permeability to reduce dampness and discomfort.

[0022] Integral connection between layers: The layers of the entire sanitary napkin are formed into an integral structure through a series of fixing technologies (such as heat pressing, ultrasonic welding, adhesives, etc.). This connection method ensures the tightness and stability between the layers, while allowing liquid to flow efficiently between the layers, achieving rapid absorption and drying.

[0023] Detailed description of the absorption layer 1

[0024] Material composition: The absorption layer 1 is made of highly absorbent materials, which have the following characteristics:

[0025] Super absorbent resin: including but not limited to sodium polyacrylate, polyacrylamide, etc. These resins can quickly absorb large amounts of liquid and transform into a gel to prevent liquid backseepage.

[0026] Cellulose fiber: such as fluff pulp, this natural fiber has good water absorption and liquid retention capabilities, and enhances the structural strength of the absorbent layer 1.

[0027] Functional additives: such as antibacterial agents, deodorants, etc., to improve the hygiene performance of sanitary napkins and the comfort of users.

[0028] Structural design: The structural design of the absorption layer 1 adopts a multi-layer arrangement to improve the absorption efficiency and uniformity of liquid distribution:

[0029] The upper layer 11 is composed of a thin layer of highly absorbent resin and fiber mixture, which can quickly absorb liquid and prevent surface re-seepage.

[0030] The middle layer 12 is mainly composed of cellulose fibers and highly absorbent resin arranged in an alternating manner to form a porous structure to increase the liquid storage capacity.

[0031] The lower layer 13 is made of a mixture of highly absorbent resin and a small amount of fiber, which further enhances the water absorption capacity and is closely combined with the quick-drying layer 3.

[0032] Processing technology: The processing of the absorption layer 1 adopts advanced technology to ensure the uniform distribution of materials and the stability of the structure:

[0033] Air-laying: The air-laying technology is used to evenly mix the super absorbent resin and fibers to form a sheet structure.

[0034] Thermal pressing: Thermal pressing technology is used to enhance the strength and stability of the absorption layer 1 and ensure close bonding between the layers.

[0035] Pore ​​structure: The absorbent layer 1 has an optimized pore structure, and the pore size and distribution density are carefully designed to ensure that the liquid can penetrate quickly and be evenly distributed, thereby improving the overall absorption efficiency.

[0036] Other features:

[0037] High absorption rate: can absorb a large amount of liquid in a short time, reducing side leakage and overflow.

[0038] Liquid retention capacity: The absorbent layer 1 can retain the absorbed liquid for a long time, prevent the liquid from seeping back, and improve the user's dry experience.

[0039] Detailed description of the guide layer 2

[0040] Material composition: The guide layer 2 is made of highly liquid-permeable materials, which have the following characteristics:

[0041] Non-woven fabrics: including but not limited to polypropylene (PP), polyester (PET) and other materials. These non-woven fabrics have good liquid permeability and softness.

[0042] Perforated film: Use perforated film to increase liquid permeability and ensure that liquid can quickly penetrate into the absorption layer 1 through the guide layer 2.

[0043] Fiber mesh: It is composed of a fiber mesh structure to further improve the flow rate and uniform distribution of the liquid.

[0044] Structural design: The structural design of the guide layer 2 focuses on rapid penetration and uniform distribution of liquid:

[0045] Single-layer structure: It is composed of a single layer of highly liquid-permeable non-woven fabric or perforated membrane to ensure that liquid can pass through quickly.

[0046] Multilayer structure: including two or more layers of non-woven fabric or perforated membrane, which can enhance the diversion effect and ensure the rapid conduction and diffusion of liquid between different layers.

[0047] Processing Technology The processing of the guide layer 2 adopts advanced technology to ensure the uniform distribution of materials and the stability of the structure:

[0048] Thermal pressing: Use thermal pressing technology to tightly combine multiple layers of materials to form a stable guide layer 2 structure to ensure the tightness between the layers.

[0049] Ultrasonic welding: Ultrasonic welding technology is used to enhance the overall strength and durability of the guide layer 2.

[0050] Pore ​​structure: The drainage layer 2 has an optimized pore structure, and the pore size and distribution density are carefully designed to ensure that the liquid can penetrate quickly and be evenly distributed:

[0051] Large pore area: mainly located in the central part of the guide layer 2 to ensure that the liquid can pass through quickly.

[0052] Small aperture area: mainly located at the edge of the guide layer 2, to assist in the uniform distribution of the liquid and prevent side leakage.

[0053] Other features:

[0054] High liquid permeability: The guide layer 2 can quickly guide the liquid to the absorbent layer 1, reducing the surface wet time.

[0055] Softness: Ensure that the guide layer 2 fits closely with the absorbent layer 1, while providing a comfortable touch and avoiding irritation to the user's skin.

[0056] Durability: It has good mechanical strength and durability, ensuring that it is not easily damaged or deformed during use.

[0057] Detailed description of quick-drying layer 3

[0058] The quick-drying layer 3 is one of the core components of "a soft and breathable sanitary napkin", and its main function is to quickly absorb liquid and keep the surface dry. The quick-drying layer 3 includes the following components and characteristics:

[0059] Material composition: Quick-drying layer 3 uses highly absorbent and quick-drying materials that have the following properties:

[0060] Microfiber materials: including but not limited to polyester (PET) or nylon (PA) microfibers, which have a large specific surface area and help to quickly absorb and evaporate liquids.

[0061] Super absorbent polymer (SAP): Usually mixed with fiber materials to improve overall absorbency and quick-drying properties.

[0062] Cellulosic fibers: Such as wood pulp fibers, these fibers have good water absorption and air permeability.

[0063] Structural design: The structural design of the quick-drying layer 3 focuses on rapid absorption and drying of liquids:

[0064] Porous structure: Use porous or mesh structure to increase the air permeability of the material and the speed of liquid transmission.

[0065] Layered design: The internal structure is divided into different functional layers, such as absorption layer 1 and drying layer, to ensure that the surface can dry quickly after the liquid is quickly absorbed.

[0066] Processing technology: The processing of quick-drying layer 3 adopts advanced technology to ensure the uniform distribution of materials and the stability of the structure:

[0067] Heat pressing: Use heat pressing technology to tightly combine different material layers to form a stable quick-drying layer 3 structure.

[0068] Spraying process: Spray highly absorbent resin on the surface of the fiber material to enhance the quick-drying effect.

[0069] Pore ​​structure: The pore structure of the quick-drying layer 3 has been carefully designed to ensure that liquids can quickly penetrate and evaporate quickly:

[0070] Microporous structure: The tiny pore size design helps to quickly absorb liquid and increase the evaporation surface area.

[0071] Gradient pore structure: The pore size gradually increases from the surface to the inside, ensuring that the liquid can spread inward quickly and the surface remains dry.

[0072] Other features:

[0073] High absorbency: Quick-drying layer 3 can quickly absorb large amounts of liquid, prevent back-seepage, and keep the surface dry.

[0074] Breathability: It has good breathability, helps liquid evaporate and enhances the drying effect.

[0075] Softness: Provides a comfortable touch and avoids irritation to the user's skin.

[0076] Antimicrobial: Certain quick-dry layer 3 materials have natural or added antimicrobial properties, further improving hygiene performance.

[0077] Detailed description of leakproof backing layer 4

[0078] Material composition: The leakproof back layer 4 is made of waterproof and breathable materials, which have the following characteristics:

[0079] Polyethylene (PE) film: Commonly used to provide waterproof properties and prevent liquids from penetrating into clothing.

[0080] Breathable polyurethane (PU) film: has a microporous structure that allows air to pass through while preventing liquid penetration.

[0081] Composite material: combines the advantages of PE and PU films, which is both waterproof and breathable.

[0082] Structural design: The structural design of the leakproof back layer 4 focuses on liquid barrier and air permeability:

[0083] Multi-layer composite structure: Multi-layer composite materials are used to ensure that liquids are effectively blocked while maintaining a certain degree of breathability.

[0084] Edge sealing design: The edge of the sanitary napkin is sealed to prevent liquid from leaking from the sides.

[0085] Processing technology: The processing of the leakproof back layer 4 adopts advanced technology to ensure the waterproofness and breathability of the material:

[0086] Heat sealing process: Heat sealing technology is used to tightly combine the leak-proof back layer 4 with other parts of the sanitary napkin to form a sealed edge.

[0087] Microporous molding: Micropores are formed on the PU film to achieve breathability.

[0088] Porous structure: The porous structure of the leakproof backing layer 4 has been carefully designed to ensure that it is impermeable to liquids while allowing air to circulate:

[0089] Microporous structure: The tiny pore size design facilitates air circulation while preventing liquid penetration.

[0090] Gradient pore structure: The pore size changes gradually from the surface to the inside, ensuring that the liquid is effectively blocked.

[0091] Other features:

[0092] Softness: Provides a comfortable touch and avoids irritation to the user's skin.

[0093] Stretchability: It has a certain degree of elasticity to adapt to users of different body shapes and improve the fit.

[0094] Quietness: The material produces little noise when moving, improving user comfort.

[0095] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0096] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A soft and breathable sanitary napkin, characterized in that: include: The absorbent layer (1) and the guide layer (2) heat-pressed on the absorbent layer (1) quickly guide the liquid to the absorbent layer (1). The absorbent layer (1) is bonded to the quick-drying layer (3) by an adhesive. The quick-drying layer is used to accelerate the transfer of liquid to the absorbent layer (1) and promote surface drying. The anti-leakage back layer (4) is heat-pressed on the bottom of the quick-drying layer to prevent the liquid from penetrating to the outside.

2. The soft breathable sanitary napkin according to claim 1, characterized in that: The absorbent layer (1) is composed of a three-layer structure. The upper layer (11) is composed of a thin layer of super absorbent resin and fiber mixture, which can quickly absorb liquid and prevent surface re-seepage. The middle layer (12) is composed of cellulose fibers and super absorbent resin arranged in an alternating manner to form a porous structure to increase the liquid storage capacity. The lower layer (13) is composed of a mixture of absorbent resin and a small amount of fiber to further enhance the water absorption capacity and is closely combined with the quick-drying layer.

3. The soft breathable sanitary napkin according to claim 1, characterized in that: The guide layer (2) is formed by hot pressing non-woven fabric, perforated film and fiber net. The central part and edge part of the guide layer are both provided with a plurality of holes. The diameter of the holes in the central part is larger than that in the edge part, so as to ensure that liquid can pass through quickly and be evenly distributed to prevent side leakage.

4. The soft breathable sanitary napkin according to claim 1, characterized in that: The quick-drying layer (3) is a mesh structure, and polyester, resin and cellulose fibers are combined together by heat pressing, so that the surface can dry quickly after the liquid is absorbed.

5. The soft breathable sanitary napkin according to claim 1, characterized in that: The anti-leakage back layer (4) is formed by heat-sealing a polyethylene film and a polyurethane film.

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