A flow guide structure for a diaper

Abstract

This application provides a flow-guiding structure for diapers, including a diaper body. The diaper body includes a top layer, an absorbent layer, and a bottom film layer. The top layer includes a skin-friendly fabric and a backflow-proof fabric that are adhered to each other. The skin-friendly fabric has uniformly distributed air pores, and the backflow-proof fabric has uniformly distributed micropores. When liquid is located in the top layer, it permeates into the absorbent layer through the cooperation of the air pores and micropores. Since the skin-friendly fabric has side guard strips on both sides, when liquid accumulates in a single location and side leakage occurs, the side guard strips can guide the liquid, allowing the liquid to flow evenly to different locations on the top layer. At the same time, the backflow-proof fabric has several spaced protrusions that form flow-guiding channels. Liquid located in the backflow-proof fabric flows further through the flow-guiding channels, preventing liquid from accumulating in the same location. This avoids the lack of flow-guiding effect in traditional diapers, which can lead to local saturation and affect the overall wearing experience.

Description

Technical Field

[0001] This application relates to the field of diaper technology, and more particularly to a flow guiding structure for diapers. Background Technology

[0002] Disposable diapers are hygiene products made of highly absorbent materials, mainly used for infants, incontinent adults, or special medical scenarios. They keep the skin dry by quickly absorbing and locking in liquid. However, existing disposable diapers lack liquid guidance, causing liquid to accumulate at the contact points while other areas are not absorbed enough, leading to side leakage or local saturation. Furthermore, because urine cannot be evenly distributed throughout the absorbent core, the part of the diaper surface in contact with the skin remains damp for a long time, thus affecting the overall wearing experience. Utility Model Content

[0003] The purpose of this invention is to provide a flow guiding structure for diapers in order to solve the above-mentioned problems.

[0004] The technical solution of this application is implemented as follows:

[0005] This application provides a flow-guiding structure for diapers, including a diaper body, the diaper body including a surface layer, an absorbent layer and a bottom film layer, the surface layer including a skin-friendly fabric and a reverse-leakage fabric that are adhered to each other, the skin-friendly fabric having air pores evenly distributed on it, and the reverse-leakage fabric having micropores evenly distributed on it, and when the skin-friendly fabric and the reverse-leakage fabric are attached together, the air pores and micropores are interconnected.

[0006] The pore size of the vent is larger than that of the micropore;

[0007] The reverse osmosis cloth is provided with raised strips, and several raised strips are provided and distributed at intervals along the length of the reverse osmosis cloth. Several raised strips form a flow guide groove on the reverse osmosis cloth.

[0008] The skin-friendly fabric has edge strips on both sides, and a hollow groove is provided on the opposite side of the two sets of edge strips;

[0009] The absorbent layer is filled with an absorbent core, which has several spaced protrusions. The reverse osmosis fabric has grooves corresponding to the positions of the protrusions. When the absorbent layer is attached to the surface layer, the protrusions are embedded in the grooves.

[0010] The absorbent layer is located between the top layer and the bottom film layer.

[0011] In one embodiment, the skin-friendly fabric is provided with two sets of spaced-apart blocking strips, which are located between the two sets of edge-blocking strips and abut against each other.

[0012] The outer perimeter of the blocking strip abuts against the end face of the edge guard strip;

[0013] Two sets of blocking strips and edge strips form a flow guiding area.

[0014] In one embodiment, a protective edge is provided inside the hollow groove, and the two ends of the protective edge are fitted to the two ends of the inner wall of the hollow groove, so that an accommodating area is formed between the protective edge and the hollow groove.

[0015] The accommodating area is filled with an absorbent portion;

[0016] Overflow holes are evenly distributed along the perimeter of the enclosure, which, in combination, allow the containment area to connect with the outside.

[0017] In one embodiment, a bending groove is provided on the side of the edge strip away from the hollow groove, and the bending groove is provided to make the two ends of the edge strip approach or move away from each other.

[0018] When the end guard strips come close to each other, the guard edge folds.

[0019] In one embodiment, a fluffing agent is filled between the base film layer and the absorbent layer.

[0020] In one embodiment, the main body of the diaper has waist tabs on both sides, and each end of the waist tabs has Velcro.

[0021] The advantages or beneficial effects of the above technical solutions include at least the following:

[0022] This application discloses a flow-guiding structure for disposable diapers. When urine is produced while wearing the diaper, the liquid permeates the skin-friendly fabric on the surface layer. Because the skin-friendly fabric has breathable pores that communicate with the micropores in the reverse-leakage fabric, the liquid can flow through the pores and micropores into the absorbent layer and be absorbed by the absorbent core. Since the skin-friendly fabric has side guards on both sides, when liquid accumulates at a single contact point and spreads to both sides, the side guards can block the liquid and guide the liquid through the hollow grooves in the side guards, allowing the liquid to flow to different positions on the skin-friendly fabric. Furthermore, since the reverse-leakage fabric has several spaced protrusions that form flow-guiding grooves, when liquid is on the reverse-leakage fabric, the flow-guiding grooves further guide the liquid, allowing the liquid to be evenly distributed in different positions, thereby solving the problem of liquid accumulation in a single position, which leads to a decrease in wearing comfort. Attached Figure Description

[0023] The accompanying drawings illustrate exemplary embodiments of the present application and, together with the description thereof, serve to explain the principles of the present application. These drawings are included to provide a further understanding of the present application and are incorporated in and constitute a part of this specification.

[0024] Figure 1 A structural schematic diagram of the diaper according to an embodiment of this application is shown from one perspective;

[0025] Figure 2 A structural schematic diagram of the diaper according to another embodiment of this application is shown;

[0026] Figure 3 A schematic diagram of the structure of a diaper according to an embodiment of this application is shown from a partial cross-sectional view.

[0027] Figure 4 A structural schematic diagram of the diaper according to another partial cross-sectional view of the present application is shown;

[0028] Figure 5 Examples of this application are presented. Figure 2 Enlarged view of point A in the middle;

[0029] Figure 6 Examples of this application are presented. Figure 4 Enlarged view of point B in the middle;

[0030] Reference numerals: 1. Surface layer; 11. Skin-friendly fabric; 111. Breathable hole; 112. Edge guard strip; 1121. Hollowed-out groove; 1122. Protective edge; 1123. Absorbent section; 1124. Bending groove; 113. Barrier strip; 12. Reverse permeability fabric; 121. Micropores; 122. Raised strip; 123. Groove;

[0031] 2. Absorbent layer; 21. Absorbent core; 211. Protrusion;

[0032] 3. Base film layer;

[0033] 4. Fluff pulp;

[0034] 5. Waist area; 51. Velcro. Detailed Implementation

[0035] Embodiments of this application will now be described in more detail with reference to the accompanying drawings. While some embodiments of this application are shown in the drawings, it should be understood that this application can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this application. It should be understood that the drawings and embodiments of this application are for illustrative purposes only and are not intended to limit the scope of protection of this application.

[0036] It should be noted that, where there is no conflict, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0037] It should be understood that the term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to". The term "based on" means "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc., mentioned in this application are used only to distinguish different devices, modules, or units, and are not intended to limit the order of functions performed by these devices, modules, or units or their interdependencies.

[0038] It should be noted that the terms "a" and "a number" used in this application are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0039] The names of the messages or information exchanged between multiple devices in the embodiments of this application are for illustrative purposes only and are not intended to limit the scope of these messages or information.

[0040] Reference Figures 1-5 A flow-guiding structure for disposable diapers includes a diaper body, which comprises a top layer 1, an absorbent layer 2, and a bottom film layer 3. The top layer 1 is the side of the diaper that directly contacts the skin. The absorbent layer 2 is used to absorb liquid. The top layer 1 includes a skin-friendly fabric 11 and a reverse-leakage fabric 12 that are adhered to each other. The skin-friendly fabric 11 is made of non-woven fabric or pure cotton. The reverse-leakage fabric 12 is made of polyethylene or polypropylene and can be made into a film with a special microporous structure. The skin-friendly fabric 11 has uniformly distributed air pores 111, which serve as liquid inlets, quickly receiving and initially dispersing the liquid, reducing surface stagnation. The reverse osmosis fabric 12 has micropores 121 evenly distributed on it. When the skin-friendly fabric 11 is attached to the reverse osmosis fabric 12, the vent 111 and the micropores 121 are interconnected. The pore diameter of the vent 111 is larger than that of the micropores 121. When the liquid is on the surface layer 1, the liquid enters the absorption layer 2 through the vent 111 and the micropores 121. The size setting of the micropores 121 allows the liquid to penetrate downward into the absorption layer 2. At the same time, the difference in pore size inhibits reverse osmosis, keeps the surface dry, and the interconnected pore structure allows air to circulate inside and outside the surface layer 1, expelling hot and humid gases and improving wearing comfort.

[0041] The reverse osmosis fabric 12 is provided with raised strips 122, and several raised strips 122 are provided and spaced apart along the length of the reverse osmosis fabric 12. Several raised strips 122 form guide grooves on the reverse osmosis fabric 12. The skin-friendly fabric 11 is provided with side guards 112 on both sides. The side of the two sets of side guards 112 opposite each other is provided with a hollow groove 1121. The side guards 112 serve as a three-dimensional structure of the edge of the surface layer 1, forming a preliminary seal along the inner side of the baby's thigh to prevent liquid from overflowing to both sides. The guide grooves between the raised strips 122 form a guide channel, allowing liquid to flow along the guide grooves to the absorbent layer. 2. The middle and rear diffuse the liquid, balancing the absorption pressure, thereby guiding the liquid to flow rapidly along the longitudinal direction of the diaper and avoiding local accumulation. At the same time, the three-dimensional structure of the raised strip 122 increases the contact area between the reverse seepage cloth 12 and the absorbent layer 2, increasing the liquid seepage speed. When the raised strip 122 is close to the two side edges, it can work with the edge guard strip 112 to restrict the lateral flow of liquid, forcing the liquid to concentrate in the central absorption area, thus playing a guiding role. Both the edge guard strip 112 and the raised strip 122 are made of elastic non-woven fabric, forming protrusions on the skin-friendly cloth 11 and the reverse seepage cloth 12.

[0042] The absorbent layer 2 is filled with an absorbent core 21, which is made of highly absorbent resin. It has strong water retention and stable water absorption performance. After absorbing water, it will expand into a gel-like state, which can lock in urine and prevent backflow. The absorbent core 21 has several spaced protrusions 211. The reverse osmosis cloth 12 is provided with grooves 123 corresponding to the positions of the protrusions 211. When the absorbent layer 2 is attached to the surface layer 1, the protrusions 211 are embedded in the grooves 123. The engagement of the protrusions 211 and the grooves 123 prevents the surface layer 1 and the absorbent layer 2 from sliding relative to each other, ensuring that the grooves 123 and the absorbent core 21 are accurately aligned, avoiding the failure of flow guidance due to displacement. In addition, the spaced distribution of the protrusions 211 makes the absorbent core 21 form point support, creating gap channels inside the absorbent layer 2, which facilitates the lateral diffusion of liquid in the core.

[0043] The absorbent layer 2 is located between the top layer 1 and the bottom film layer 3. Liquid adhering to the top layer 1 is absorbed by the interior of the absorbent layer 2. The bottom film layer 3 is a thin film made of polyethylene or polypropylene. The top layer 1, absorbent layer 2 and bottom film layer 3 are bonded together by a thermal bonding process. The bonding process ensures that the three layers are tightly bonded, avoiding delamination due to friction or liquid weight during use, maintaining the integrity of the drainage path, and the layers work together to improve the overall tensile strength and folding resistance of the diaper, making it less prone to cracking.

[0044] Based on the above structure, when the diaper body is worn, the skin-friendly fabric 11 in the surface layer 1 comes into direct contact with the skin. When urine is on the skin-friendly fabric 11, the side strips 112 on both sides of the skin-friendly fabric 11 can block the urine. Furthermore, when urine enters the perforated groove 1121, it can flow along the trajectory of the perforated groove 1121, thereby achieving a urine drainage effect and preventing side leakage. Simultaneously, the combination of the breathable holes 111 and the micropores 121 allows urine to seep into the anti-leakage fabric 12, and through the numerous... The guide groove formed by the protruding strip 122 further diffuses the liquid, guiding it through the guide groove. During the flow, the liquid enters the absorbent layer 2 and comes into contact with the absorbent core 21. The absorbent core 21 adsorbs the liquid after contact. Through the side strip 112 on the skin-friendly fabric 11 and the protruding strip 122 inside the reverse seepage fabric 12, the liquid on the diaper can be guided, thus solving the problem that traditional diapers lack the guiding effect, resulting in liquid concentration and affecting the wearing experience.

[0045] In one embodiment, reference is made to Figure 1 and Figure 2 The skin-friendly fabric 11 has two sets of spaced-apart blocking strips 113. The blocking strips 113 can be made of soft PU material. The blocking strips 113 are located between the two sets of side guard strips 112 and abut against each other. The blocking strips 113 and side guard strips 112 are located around the center of the diaper. The outer periphery of the blocking strip 113 abuts against the end face of the side guard strip 112. The two sets of blocking strips 113 and side guard strips 112 form a flow guiding area. The geometric area formed by the side guard strips 112 and blocking strips 113 forms a flow guiding area through physical separation, guiding urine to diffuse along a preset path to the center of the absorbent layer 2, preventing liquid from randomly penetrating to the sides and reducing the risk of side leakage. In addition, the spaced distribution of the blocking strips 113 can control the lateral flow range of liquid, so that the liquid is concentrated in the flow guiding area, playing a guiding role and accelerating the penetration speed into the absorbent layer 2.

[0046] In one embodiment, reference is made to Figure 1 , Figure 4 and Figure 6The hollow groove 1121 is provided with a protective edge 1122. The two ends of the protective edge 1122 are attached to the two ends of the inner wall of the hollow groove 1121, so that a receiving area is formed between the protective edge 1122 and the hollow groove 1121. When the wearer wears it, the side strip 112 is located on both sides of the root of the thigh. The receiving area is filled with an absorbent part 1123. The absorbent part 1123 and the absorbent core 21 are made of the same material. Overflow holes are evenly distributed on the protective edge 1122. Through the cooperation of the overflow holes, the receiving area is connected to the outside. The receiving area formed by the protective edge 1122 and the hollow groove 1121 serves as a side absorption unit, which can quickly capture the liquid flowing in through the overflow hole, forming a secondary interception of side leakage. At the same time, the absorbent part 1123 directly contacts the liquid in the receiving area, shortening the liquid conduction path and improving the overall absorption speed and capacity.

[0047] In one embodiment, reference is made to Figure 1 , Figure 4 and Figure 6 The side of the edge strip 112 away from the hollow groove 1121 is provided with a bending groove 1124. The bending groove 1124 makes the two ends of the edge strip 112 move closer or further apart. When the two ends of the edge strip 112 move closer together, the protective edge 1122 folds. The bending groove 1124 gives the edge strip 112 adjustable mechanical properties. When worn, the distance between the two ends can be manually or automatically adjusted according to the baby's leg shape so that the protective edge 1122 fits different leg sizes, avoiding leakage due to being too loose or marks due to being too tight, and improving the sealing effect.

[0048] In one embodiment, reference is made to Figures 1-3 Between the bottom film layer 3 and the absorbent layer 2, there is a fluff pulp 4. As a traditional absorbent material, the fluff pulp 4 has a porous structure, which can quickly absorb liquid and diffuse it to the surroundings, and distribute it evenly to the entire absorbent layer 2, avoiding local saturation that leads to backflow. Its interwoven fiber structure can also store a large amount of liquid, increasing the absorbency of the diaper. Furthermore, the fluff pulp 4 fills the space between the two layers, forming a soft and strong support layer, preventing the absorbent layer 2 from falling due to the weight of the liquid, accelerating the conduction of liquid from the skin-friendly cloth 11 to the bottom film, and reducing surface residue.

[0049] In one embodiment, reference is made to Figure 1 , Figure 2 and Figure 4 The main body of the diaper has waist tabs 5 on both sides. The waist tabs 5 allow the main body of the diaper to be installed on the wearer. Both ends of the waist tabs 5 are equipped with Velcro 51. The Velcro 51 allows the wearer to adjust the position of the Velcro according to the wearer's waist size, ensuring that the waist fit is not loose, while avoiding skin pressure caused by being too tight, thus improving wearing comfort.

[0050] In the description of this application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0051] Those skilled in the art should understand that the above embodiments are merely for illustrative purposes and are not intended to limit the scope of this application. Those skilled in the art can make other changes or modifications based on the above disclosure, and these changes or modifications still fall within the scope of this application.

Claims

1. A flow-guiding structure for disposable diapers, comprising a disposable diaper body, the disposable diaper body comprising a top layer, an absorbent layer, and a bottom film layer, characterized in that: The surface layer includes a skin-friendly fabric and a reverse osmosis fabric that are adhered to each other. The skin-friendly fabric has air pores evenly distributed on it, and the reverse osmosis fabric has micropores evenly distributed on it. When the skin-friendly fabric and the reverse osmosis fabric are attached together, the air pores and the micropores are interconnected. The diameter of the vent is larger than the diameter of the micropore; The reverse osmosis cloth is provided with protruding strips, and several protruding strips are provided and distributed at intervals along the length direction of the reverse osmosis cloth. Several protruding strips form a flow guide groove on the reverse osmosis cloth. The skin-friendly fabric has edge strips on both sides, and the two sets of edge strips have a hollow groove on the opposite side. The absorbent layer is filled with an absorbent core, and the absorbent core has several spaced protrusions. The reverse osmosis fabric has grooves corresponding to the positions of the protrusions. When the absorbent layer is attached to the surface layer, the protrusions are embedded in the grooves. The absorbent layer is located between the surface layer and the bottom film layer.

2. The flow-guiding structure for diapers according to claim 1, characterized in that: The skin-friendly fabric is provided with two sets of spaced-apart blocking strips, which are located between the two sets of edge-blocking strips and abut against each other. The outer periphery of the blocking strip abuts against the end face of the edge guard strip; The two sets of blocking strips and the edge strips form a flow guiding area.

3. The flow-guiding structure for diapers according to claim 1, characterized in that: A protective edge is provided inside the hollow groove, and the two ends of the protective edge are attached to the two ends of the inner wall of the hollow groove, so that an accommodating area is formed between the protective edge and the hollow groove. The accommodating area is filled with an absorbent portion; Overflow holes are evenly distributed along the edge of the enclosure, allowing the accommodating area to communicate with the outside through the interaction of the overflow holes.

4. The flow-guiding structure for diapers according to claim 3, characterized in that: The side of the edge guard strip away from the hollow groove is provided with a bending groove, and the two ends of the edge guard strip are brought closer to each other or moved away from each other by the setting of the bending groove. When the end guard strips come close to each other, the guard edge folds.

5. The flow-guiding structure for diapers according to claim 1, characterized in that: The space between the bottom film layer and the absorbent layer is filled with fluff pulp.

6. The flow-guiding structure for diapers according to claim 1, characterized in that: The main body of the diaper has waist tabs on both sides, and each end of the waist tabs has Velcro.

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