Capillary effect surface layer and paper diaper having the same

Abstract

The utility model relates to paper diaper technical field, concretely relates to a kind of capillary effect surface layer and paper diaper thereof, including paper diaper surface layer, the paper diaper surface layer is sequentially composed of hydrophobic surface layer, absorption surface layer and hydrophilic surface layer from top to bottom, the inside of the hydrophobic surface layer is equipped with liquid collecting cavity, the inside of the hydrophobic surface layer and located inside the liquid collecting cavity are fixedly connected with multiple groups of seepage prevention paddy;The absorption surface layer is made of multiple groups of hollow short fibers, at least one group of capillary through holes is equipped in the inside of the hollow short fiber, the inside pore size of the single hollow short fiber is 3 μm-10 μm, the thickness of the hollow short fiber is 1.0-8.0 dtex, the length of the hollow short fiber is 25-65mm, the utility model is diffused by design to realize urine rapid absorption and with the aid of capillary effect, effectively avoid baby hip damp, reduce skin problem risk.

Description

Technical Field

[0001] This utility model relates to the field of diaper technology, specifically to a diaper with a capillary effect surface layer and the same. Background Technology

[0002] In the field of infant care products, diapers have always received much attention as an important product to ensure the daily comfort and health of infants. Diapers are mainly composed of a top layer, absorbent core, bottom film, and some auxiliary structures (such as elastic waistbands and leak-proof side panels). Among them, the diaper top layer is in direct contact with the baby's delicate skin and undertakes the key task of initial urine treatment, making it a key focus of research and development. A well-designed and fully functional diaper top layer plays an important role in improving the baby's comfort, preventing skin problems, and ensuring good urine absorption and treatment.

[0003] However, the surface layer of ordinary diapers is not ideal in terms of urine absorption and conduction. It cannot quickly transfer urine from the contact surface of the baby's buttocks to the underlying absorbent core. Since most of the surface layers of existing diapers are made of solid fibers, the solid fiber structure is dense and lacks effective liquid transport channels inside. When urine comes into contact with the surface layer, the solid fibers can only rely on their own surface to absorb the urine, which is quite limited. This causes the urine to stay on the surface layer for a long time, resulting in the baby's buttocks being in a moist environment for a long time. This moist environment not only makes the baby feel uncomfortable and affects their sleep and activity, but also greatly increases the likelihood of the baby developing skin problems such as diaper rash.

[0004] Therefore, it is of great importance to design a diaper with a capillary effect surface layer to solve the above-mentioned defects. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model designs a diaper with a capillary effect surface layer. This diaper with a capillary effect surface layer aims to solve the technical problem that ordinary diapers in the prior art use solid fibers for the surface layer, which has significant limitations in urine absorption and conduction, resulting in the baby's buttocks being easily kept in a moist environment and causing discomfort.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A capillary effect surface layer includes a diaper surface layer, which is composed of a hydrophobic surface layer, an absorbent surface layer and a hydrophilic surface layer from top to bottom. The hydrophobic surface layer has a liquid collection cavity inside, and multiple sets of anti-leakage funnels are fixedly connected inside the hydrophobic surface layer and inside the liquid collection cavity.

[0008] The absorbent surface layer is made of multiple sets of hollow short fibers, and the hollow short fibers have at least one set of capillary pores inside.

[0009] As a preferred embodiment of this utility model, the internal pore size of a single hollow short fiber is 3μm-10μm.

[0010] As a preferred embodiment of this utility model, the hollow short fiber has a fineness of 1.0-8.0 dtex.

[0011] As a preferred embodiment of this utility model, the length of the hollow short fiber is 25-65mm.

[0012] As a preferred embodiment of this utility model, the hydrophobic surface layer is made of nonwoven fabric impregnated with hydrophobic spinning solution, and the hydrophilic surface layer is made of nonwoven fabric impregnated with hydrophilic spinning solution.

[0013] As a preferred embodiment of this utility model, the inside of the liquid collection chamber is fixedly connected with multiple sets of supporting rubber columns, and the inside of each of the multiple sets of seepage-proof buckets is fixedly connected with seepage-proof baffles.

[0014] This utility model also provides a diaper, comprising the capillary effect surface layer as described in any one of the above claims, and further comprising:

[0015] The diaper body has an elastic waistband fixedly connected to its rear end, and water-repellent and leak-proof side panels fixedly connected to both the left and right ends of the diaper body. The diaper body is composed of an absorbent composite core, a breathable bottom film, and a bottom non-woven fabric from top to bottom. The diaper surface layer is fixedly connected to the top of the absorbent composite core.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. In this invention, through the design of the water-conveying surface layer, after urine comes into contact with the hydrophobic surface layer, due to its hydrophobicity, the urine permeates into the collection chamber through the micropores inside the hydrophobic surface layer or the gaps in the fabric. The urine is then quickly guided to the absorbent surface layer through the anti-seepage funnel, which is funnel-shaped with a large opening at the top and a small opening at the bottom. This special shape allows the urine in the collection chamber to flow rapidly towards the bottom opening, playing a guiding role and enabling the urine to quickly reach the absorbent surface layer below from the collection chamber. The multiple sets of supporting adhesive columns inside the collection chamber are made of hot melt adhesive and are used for maintenance... The stable structure of the collection chamber prevents deformation under external pressure, which could affect the flow and collection effect. The anti-seepage block strengthens the overall structure of the anti-seepage bucket. The TPE material itself has a certain degree of flexibility and elasticity. When the collection chamber is subjected to external pressure or vibration and impact caused by the baby's daily activities, the anti-seepage block can work with the anti-seepage bucket to buffer the flow and resist structural deformation to a greater extent. At the same time, it ensures that urine only enters the absorbent surface layer through the bottom opening of the anti-seepage bucket in a one-way channel, effectively improving the anti-leakage performance of the structure.

[0018] 2. In this invention, through the design of the absorbent surface layer and the combined design of the hydrophilic surface layer, when urine is quickly guided to the absorbent surface layer through the seepage prevention funnel, it is rapidly absorbed within the absorbent surface layer and diffuses outwards under the capillary effect of the capillary pores of the hollow short fibers. The hydrophilic surface layer, based on its hydrophilicity, allows urine to pass smoothly and be transferred to the absorbent composite core below. The polymer and fluff pulp in the absorbent composite core absorb and store a large amount of urine, storing it for a long time and avoiding frequent movement of urine within the diaper, which could irritate the baby's skin. It also prevents urine from accumulating in certain areas and forming large damp areas. This highly efficient absorption and diffusion capability further reduces the chance of prolonged contact between the baby's buttocks and urine, providing better protection for the baby's skin health. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the diaper body structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the diaper of this utility model;

[0021] Figure 3 This is a schematic diagram of the surface layer structure of the diaper of this utility model;

[0022] Figure 4 This is a schematic diagram of the hollow short fiber structure of this utility model.

[0023] In the diagram: 1. Diaper top layer; 2. Hydrophobic top layer; 3. Absorbent top layer; 301. Hollow short fiber; 302. Capillary pores; 4. Hydrophilic top layer; 5. Liquid collection chamber; 501. Supporting adhesive column; 6. Leak-proof funnel; 601. Leak-proof baffle; 7. Diaper body; 701. Absorbent composite core; 702. Breathable bottom film; 703. Bottom non-woven fabric; 8. Elastic waistband; 9. Water-repellent and leak-proof side panels. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0025] Example: Please refer to Figures 1-4 This utility model provides a technical solution:

[0026] A capillary effect surface layer includes a diaper surface layer 1, which is composed of a hydrophobic surface layer 2, an absorbent surface layer 3 and a hydrophilic surface layer 4 from top to bottom. A liquid collection cavity 5 is opened inside the hydrophobic surface layer 2 and multiple sets of anti-leakage funnels 6 are fixedly connected inside the hydrophobic surface layer 2 and inside the liquid collection cavity 5.

[0027] In this embodiment, the absorbent surface layer 3 is made of multiple sets of hollow short fibers 301. Each hollow short fiber 301 has at least one set of capillary pores 302 inside. The internal pore diameter of a single hollow short fiber 301 is 3μm-10μm, the thickness of the hollow short fiber 301 is 1.0-8.0 dtex, and the length of the hollow short fiber 301 is 25-65mm. The number of capillary pores 302 inside the hollow short fiber 301 can be single, four, seven, or more, and the pore shape of the hollow short fiber 301 is complete, with a porosity of 100% and a hollowness of 16%-50%. When urine comes into contact with the hydrophobic surface layer 2, due to its hydrophobicity, the urine permeates into the collection chamber 5 through the micropores inside the hydrophobic surface layer 2 or the gaps in the fabric. The urine is then quickly guided to the absorbent surface through the anti-seepage funnel 6. In layer 3, urine is rapidly absorbed and diffused in the absorbent surface layer 3 under the capillary effect of the capillary pores 302 of the hollow short fibers 301. Through these capillary pores 302, the baby's urine is quickly conducted to the lower layer. The finer the capillary pores 302, the faster the absorption, making the diaper surface, i.e. the surface in contact with the baby's bottom, drier and with less residual liquid. The specific specifications of the hollow short fibers 301 provide structural guarantee for efficient capillary action, allowing the absorbent surface layer 3 to quickly absorb and diffuse urine by relying on the capillary effect of the hollow short fibers 301, avoiding the accumulation of urine in local areas and forming a large wet area. This efficient absorption and diffusion ability further reduces the chance of prolonged contact between the baby's buttocks and urine, providing better protection for the baby's skin health.

[0028] Furthermore, the hydrophobic surface layer 2 is made of nonwoven fabric impregnated with hydrophobic spinning solution, and the hydrophilic surface layer 4 is made of nonwoven fabric impregnated with hydrophilic spinning solution. When urine comes into contact with the hydrophobic surface layer 2, due to its hydrophobicity, the urine permeates into the collection cavity 5 through the micropores inside the hydrophobic surface layer 2 or the gaps in the fabric. The hydrophilic surface layer 4, based on its hydrophilicity, allows the urine to pass through smoothly and be transferred to the lower part.

[0029] Furthermore, multiple sets of supporting rubber columns 501 are fixedly connected inside the collection chamber 5, and multiple sets of anti-seepage hoppers 6 are each fixedly connected with anti-seepage baffles 601. The anti-seepage hoppers 6 and anti-seepage baffles 601 are integrally molded from thermoplastic elastomer (TPE) material. The anti-seepage hoppers 6 are funnel-shaped with a large opening at the top and a small opening at the bottom. This special shape allows the urine in the collection chamber 5 to flow quickly towards the bottom opening, playing a guiding role and enabling the urine to quickly reach the absorbent surface layer 3 below from the collection chamber 5. The multiple sets of supporting rubber columns 501 inside the collection chamber 5 are made of hot melt adhesive and are used to maintain... The structure of the collection chamber 5 is stable, preventing deformation under external pressure and affecting the flow and collection effect. The anti-seepage block 601 can strengthen the structural strength of the entire anti-seepage hopper 6. The TPE material itself has a certain degree of flexibility and elasticity. When the collection chamber 5 is subjected to external pressure or vibration and impact caused by the baby's daily activities, the anti-seepage block 601 can work with the anti-seepage hopper 6 to play a buffering role, resisting structural deformation to a greater extent. At the same time, it ensures that urine will only enter the unidirectional channel of the absorbent surface layer 3 through the bottom opening of the anti-seepage hopper 6, effectively improving the anti-seepage performance of the structure.

[0030] This utility model also provides a diaper, including a capillary effect surface layer, and further comprising:

[0031] The diaper body 7 is a disposable absorbent product formed by hot melt adhesive bonding of all its components. An elastic waistband 8 is fixedly connected to the rear end of the diaper body 7, and water-repellent and leak-proof side panels 9 are fixedly connected to both ends. From top to bottom, the diaper body 7 consists of an absorbent composite core 701, a breathable bottom film 702, and a bottom non-woven fabric 703. The diaper top layer 1 is fixedly connected to the top of the absorbent composite core 701. Urine quickly absorbed by the diaper top layer 1 is conducted to the lower layer. The superabsorbent polymer and fluff pulp in the absorbent composite core 701 absorb and store large amounts of urine, providing long-term urine retention. To prevent frequent movement of urine inside the diaper from irritating the baby's skin, the breathable bottom film 702 is located at the bottom of the diaper body 7 throughout the urine handling process, allowing air to enter and expel moisture and odors, keeping the internal air fresh and at a suitable humidity. The bottom non-woven fabric 703 fully wraps and supports the internal structural components at the bottom of the diaper body 7, withstanding various external forces and friction, ensuring the integrity and stability of the overall structure. At the same time, the elastic waistband 8 is fixed at the back of the diaper body 7, and when worn, it fits comfortably around the baby's waist and stretches with body movements. Water-repellent and leak-proof side panels 9 are set at both ends of the diaper body 7 to prevent urine from leaking out.

[0032] In this embodiment, the specific implementation scenario is as follows: After urine comes into contact with the hydrophobic surface layer 2, due to its hydrophobicity, the urine permeates into the collection cavity 5 through the micropores inside the hydrophobic surface layer 2 or the gaps in the fabric. The urine is then quickly guided to the absorbent surface layer 3 through the anti-seepage funnel 6. The anti-seepage funnel 6 is funnel-shaped with a large opening at the top and a small opening at the bottom. This special shape allows the urine in the collection cavity 5 to flow quickly towards the bottom opening, thus playing a guiding role and enabling the urine to quickly reach the absorbent surface layer 3 below from the collection cavity 5. The multiple sets of supporting adhesive pillars 501 inside the collection cavity 5 are made of hot melt adhesive and are used to maintain the structural stability of the collection cavity 5. To prevent deformation under external pressure and other conditions that could affect the drainage and collection effect, the leak-proof baffle 601 strengthens the overall structural strength of the leak-proof hopper 6. The TPE material itself has a certain degree of flexibility and elasticity. When the collection chamber 5 is subjected to external pressure or vibration and impact from the baby's daily activities, the leak-proof baffle 601, together with the leak-proof hopper 6, acts as a buffer, greatly resisting structural deformation. Simultaneously, it ensures that urine only enters the absorbent surface layer 3 through the bottom opening of the leak-proof hopper 6 in a one-way channel, effectively improving the leak-proof performance of the structure. Urine is then quickly guided to the absorbent surface layer 3 via the leak-proof hopper 6. During urine processing, under the capillary effect of the capillary pores 302 of the hollow short fibers 301, urine is rapidly absorbed within the absorbent surface layer 3 and diffuses outwards. The hydrophilic surface layer 4, due to its hydrophilicity, allows urine to pass smoothly and be transferred to the absorbent composite core 701 below. The polymers and fluff pulp in the absorbent composite core 701 absorb and store large amounts of urine, preserving it for an extended period and preventing frequent movement of urine within the diaper that could irritate the baby's skin. Throughout the urine processing, the breathable bottom film 702, located at the bottom of the diaper body 7, allows air to enter and expel moisture and odors, maintaining internal air permeability. With a fresh and suitable humidity, the bottom non-woven fabric 703 fully wraps and supports all internal structural components at the bottom of the diaper body 7, withstanding various external forces and friction to ensure the integrity and stability of the overall structure. At the same time, the elastic waistband 8 is fixed to the back of the diaper body 7, and when worn, it fits comfortably around the baby's waist and stretches with the body's movements. Water-repellent and leak-proof side panels 9 are set at both ends of the diaper body 7 to prevent urine from leaking out. The entire operation process is simple and convenient. This utility model achieves rapid urine absorption and diffusion through capillary effect, effectively preventing the baby's buttocks from getting wet and reducing the risk of skin problems.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A capillary effect surface layer, comprising a diaper surface layer (1), characterized in that: The diaper surface layer (1) is composed of a hydrophobic surface layer (2), an absorbent surface layer (3) and a hydrophilic surface layer (4) from top to bottom. The hydrophobic surface layer (2) has a liquid collection cavity (5) inside. Multiple sets of anti-leakage funnels (6) are fixedly connected inside the hydrophobic surface layer (2) and inside the liquid collection cavity (5). The absorbent surface layer (3) is made of multiple sets of hollow short fibers (301), and at least one set of capillary pores (302) are opened inside the hollow short fibers (301).

2. The capillary effect surface layer according to claim 1, characterized in that: The hollow short fiber (301) has an internal pore size of 3μm-10μm per fiber.

3. The capillary effect surface layer according to claim 1, characterized in that: The hollow short fiber (301) has a fineness of 1.0-8.0 dtex.

4. A capillary effect surface layer according to claim 1, characterized in that: The hollow short fiber (301) has a length of 25-65 mm.

5. A capillary effect surface layer according to claim 1, characterized in that: The hydrophobic surface layer (2) is made of nonwoven fabric impregnated with hydrophobic spinning solution, and the hydrophilic surface layer (4) is made of nonwoven fabric impregnated with hydrophilic spinning solution.

6. A capillary effect surface layer according to claim 1, characterized in that: The liquid collection chamber (5) is fixedly connected to multiple sets of support columns (501), and the internal parts of the multiple sets of seepage prevention buckets (6) are all fixedly connected to seepage prevention blocks (601).

7. A diaper, characterized in that... The surface layer with capillary effect as described in any one of claims 1-6 further includes: The diaper body (7) has an elastic waistband (8) fixedly connected to its rear end, and water-repellent and leak-proof side panels (9) fixedly connected to both the left and right ends of the diaper body (7). The diaper body (7) is composed of an absorbent composite core (701), a breathable bottom film (702), and a bottom non-woven fabric (703) from top to bottom. The diaper surface layer (1) is fixedly connected to the top of the absorbent composite core (701).

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