An adult diaper absorbent core that improves absorption speed

Abstract

This utility model relates to the field of hygiene product technology, specifically to an adult diaper absorbent core that improves absorption speed. It includes an upper absorbent core layer, a middle absorbent core layer, and a lower absorbent core layer. The upper and lower absorbent core layers are fixedly connected to the upper and lower sides of the middle absorbent core layer, respectively. High-speed absorption grooves are provided at both the front and rear ends of the top of the upper absorbent core layer. A crotch ventilation groove is provided at the top of the upper absorbent core layer, located between the two sets of high-speed absorption grooves. A bottom layer is fixedly connected to the bottom of the lower absorbent core layer. The upper, middle, and lower absorbent core layers are all made of a mixture of wood pulp fiber and multiple sets of polymer particles. The upper and middle absorbent core layers each have a high-absorption zone and a low-absorption zone inside. This utility model, through a gender-differentiated zoned absorption design, significantly improves wearing comfort and reduces product costs while ensuring superior absorbency.

Description

Technical Field

[0001] This utility model relates to the field of hygiene products technology, specifically to an absorbent core for adult diapers that improves absorption speed. Background Technology

[0002] The number of elderly people in my country is increasing year by year, and the aging problem is becoming more and more serious. As a result, the demand for adult diapers is increasing year by year. Currently, adult diapers on the market are generally enlarged versions of the design of baby diapers, without taking into account the differences between adults and babies in terms of body structure, activity patterns, and usage. Adults excrete much more than infants and young children, so the hydrophilic and absorbent properties of adult diapers are much higher than those of baby diapers.

[0003] Currently, most diaper cores on the market still use a uniform mixing method for wood pulp and polymers. This method aims to solve the problems of core clumping or breakage. However, while pursuing uniformity, it neglects consumers' requirements for absorption speed. Due to the different urine discharge points of men and women, urine will be discharged in large quantities at the discharge point, resulting in some parts of the diaper being very wet while other parts are still dry. Because the local area is already very wet, the slow absorption speed of the diaper core can easily lead to side leakage, causing discomfort to the body.

[0004] Therefore, it is of great importance to design an absorbent core for adult diapers that can improve absorption speed in order to solve the above-mentioned defects. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention designs an absorbent core for adult diapers that improves absorption speed. This absorbent core aims to solve the technical problem that while existing adult diaper cores focus on solving clumping or tearing issues, the method of uniformly mixing wood pulp and polymers neglects the requirement for absorption speed, leading to localized over-wetting and easy side leakage, causing physical discomfort.

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

[0007] An adult diaper absorbent core for improving absorption speed includes an upper absorbent core layer, a middle absorbent core layer, and a lower absorbent core layer. The upper and lower absorbent core layers are respectively fixedly connected to the upper and lower sides of the middle absorbent core layer. High-speed absorption grooves are provided at both the front and rear ends of the top of the upper absorbent core layer. A crotch ventilation groove is provided at the top of the upper absorbent core layer and between the two sets of high-speed absorption grooves. A bottom layer is fixedly connected to the bottom of the lower absorbent core layer.

[0008] The upper, middle, and lower layers of the absorbent core are all made of wood pulp fiber and multiple groups of polymer particles. The upper and middle layers of the absorbent core are respectively provided with high absorption zones and low absorption zones. The number of polymer particles in the high absorption zone is greater than that in the low absorption zone. The polymer particles in the lower layer of the absorbent core are evenly distributed.

[0009] As a preferred embodiment of this utility model, breathable sealing edges are fixedly connected to the edges of the upper, middle and lower layers of the absorbent core, and breathable micropores are opened inside the multiple sets of breathable sealing edges.

[0010] As a preferred embodiment of this utility model, multiple sets of superabsorbent polymer strips are fixedly connected to the bottom of the high-speed absorption tank, and multiple sets of guide holes are opened at the bottom of the high-speed absorption tank and between the multiple sets of superabsorbent polymer strips.

[0011] As a preferred embodiment of this utility model, the guide hole is funnel-shaped, and the diameter of the guide hole decreases from top to bottom.

[0012] As a preferred embodiment of this utility model, multiple sets of spaced protrusions are fixedly connected to the bottom of the crotch ventilation groove, and multiple sets of ventilation grooves are opened on the top of the upper layer of the absorbent core and at both the left and right ends of the crotch ventilation groove.

[0013] As a preferred embodiment of this utility model, the multiple sets of spaced protrusions are evenly distributed inside the crotch ventilation groove, and the multiple sets of spaced protrusions are all made of wood pulp fiber and multiple sets of polymer particles.

[0014] As a preferred embodiment of this utility model, the bottom layer is made of a composite of a bottom film and a sanitary liner from bottom to top.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. In this utility model, through the coordinated design of the upper, middle and lower layers of the absorbent core, the core increases the number of polymer particles in the key absorption area to form a high absorption zone, which is designed for the characteristics of male and female urine discharge, so as to quickly absorb urine and reduce surface residue. In the non-critical area, i.e. the low absorption zone, the distribution of polymer particles is reduced to improve air permeability and reduce product cost.

[0017] 2. In this utility model, through the combined design of breathable edge sealing, high-speed absorption groove, crotch breathable groove and bottom layer, the microporous structure of the breathable edge sealing achieves the dual functions of improving the breathability of the edge area and preventing side leakage. The super absorbent polymer strip in the high-speed absorption groove, together with the funnel-shaped guide hole, forms a second-level absorption channel, which improves the absorption efficiency. The combination of the spaced protrusions and the ventilation groove in the crotch breathable groove enhances the breathability of the crotch area, helps to reduce the dampness and stuffiness in this area, and improves wearing comfort. The design of the spaced protrusions can also reduce the direct contact area between the diaper and the skin to a certain extent, thereby reducing friction and reducing skin irritation and damage. The bottom layer is made of a composite of bottom film and sanitary liner from bottom to top. The bottom film is made of microporous breathable PE film with good water-repellent properties, which can effectively prevent urine from seeping into the outside of the diaper and keep the wearer dry and clean. The sanitary liner has good softness and breathability, which improves the comfort when wearing. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the male absorbent core of this utility model;

[0020] Figure 3 This is a schematic diagram of the internal structure of the absorbent core for women's use in this utility model;

[0021] Figure 4 This is a schematic diagram of the spaced protrusion structure of this utility model.

[0022] In the diagram: 1. Upper layer of absorbent core; 101. Wood pulp fiber; 102. Polymer particles; 103. High absorption zone; 104. Low absorption zone; 105. Breathable edge seal; 2. Middle layer of absorbent core; 3. Lower layer of absorbent core; 4. High-speed absorption groove; 401. Polymer water-absorbing resin strip; 402. Drainage hole; 5. Crotch ventilation groove; 501. Interval protrusions; 502. Ventilation groove; 6. Bottom layer. Detailed Implementation

[0023] 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.

[0024] Example: Please refer to Figures 1-4 This utility model provides a technical solution:

[0025] An adult diaper absorbent core with improved absorption speed includes an upper absorbent core 1, a middle absorbent core 2, and a lower absorbent core 3. The upper absorbent core 1 and the lower absorbent core 3 are respectively fixedly connected to the upper and lower sides of the middle absorbent core 2. High-speed absorption grooves 4 are provided at both the front and rear ends of the top of the upper absorbent core 1. A crotch ventilation groove 5 is provided at the top of the upper absorbent core 1 and between the two sets of high-speed absorption grooves 4. A bottom layer 6 is fixedly connected to the bottom of the lower absorbent core 3.

[0026] First, please refer to Figures 2-3 The upper layer 1, middle layer 2, and lower layer 3 of the absorbent core are all made of wood pulp fiber 101 and multiple groups of polymer particles 102. The upper layer 1 and middle layer 2 are respectively provided with a high-absorption zone 103 and a low-absorption zone 104. The number of polymer particles 102 in the high-absorption zone 103 is greater than that in the low-absorption zone 104. The polymer particles 102 are evenly distributed in the lower layer 3. Because the contact points of male urine are close to the front and middle sections, the absorbent core... More polymer particles 102 are injected into the upper layer 1 and the front and middle sections of the middle layer 2 of the absorbent core to achieve rapid water absorption and reduce surface residue. Simultaneously, to deeply lock in water and prevent backflow, a certain number of polymer particles 102 are also distributed in the lower layer 3 of the absorbent core. A certain amount of polymer particles 102 are injected into the upper layer 1, middle layer 2, and lower layer 3 of the absorbent core for women. Since the contact points for urine in women are closer to the middle and rear sections, a certain amount of polymer particles 102 are injected into the upper layer of the absorbent core. More polymer particles 102 are injected into the middle and rear sections of the absorbent core middle layer 2 to achieve rapid water absorption and reduce surface residue. At the same time, in order to lock in water deeply and prevent backflow, a certain number of polymer particles 102 also need to be distributed in the lower absorbent core layer 3. The regional distribution of polymer particles 102 can concentrate more polymer particles 102 in key areas of the diaper. These areas are usually the first areas where urine comes into contact. The concentrated distribution of polymer particles 102 can quickly absorb urine and form a gel to lock in moisture, preventing urine diffusion and backflow. Through regional distribution, an absorbency gradient can be formed, making the distribution of urine inside the diaper more reasonable and avoiding leakage or discomfort caused by local overload. Reducing the distribution of polymer particles 102 in non-critical absorbent areas of the diaper can increase the breathability of these areas, help air circulation, and reduce stuffiness. Through regional distribution, the amount of polymer particles 102 used can be reduced while ensuring absorbency, thereby reducing product costs.

[0027] For further details, please refer to Figures 1-3The upper absorbent core 1, the middle absorbent core 2, and the lower absorbent core 3 are all fixedly connected with breathable sealing edges 105. The interior of multiple sets of breathable sealing edges 105 is provided with breathable micropores. These micropores can effectively enhance the breathability of the edge area of ​​the diaper, reduce the stuffiness when wearing, and improve the user's comfort. The breathable sealing edges 105 not only increase breathability, but also prevent urine from leaking from the side to a certain extent, thus improving the overall protective performance of the diaper.

[0028] Then, please see Figure 1 Multiple sets of super absorbent polymer strips 401 are fixedly connected to the bottom of the high-speed absorption tank 4. Multiple sets of guide holes 402 are opened at the bottom of the high-speed absorption tank 4 and between the multiple sets of super absorbent polymer strips 401. The guide holes 402 are funnel-shaped, and the diameter of the guide holes 402 decreases from top to bottom. The super absorbent polymer strips 401 can quickly absorb urine. Their strong water absorption capacity ensures that the urine is quickly guided and locked inside the core. The guide holes 402 between the super absorbent polymer strips 401 are funnel-shaped, and the diameter decreases from top to bottom. This structure is conducive to the rapid absorption of urine and prevents urine from accumulating on the surface, further improving the absorption efficiency and speed. Through the synergistic effect of the super absorbent polymer strips 401 and the guide holes 402, the urine is quickly absorbed and dispersed into the deep layer of the core, effectively reducing the possibility of urine backflow to the surface and keeping the surface of the diaper dry.

[0029] Secondly, please refer to Figure 1 and Figure 4 Multiple sets of spaced protrusions 501 are fixedly connected to the bottom of the crotch ventilation groove 5. Multiple sets of ventilation grooves 502 are opened on the top of the upper layer 1 of the absorbent core and at both ends of the crotch ventilation groove 5. The multiple sets of spaced protrusions 501 are evenly distributed inside the crotch ventilation groove 5. The multiple sets of spaced protrusions 501 are all made of wood pulp fiber 101 and multiple sets of polymer particles 102. The spaced protrusions 501 inside the crotch ventilation groove 5 and the ventilation grooves 502 at both ends of the crotch ventilation groove 5 together enhance the breathability of the crotch area, which helps to reduce the dampness and stuffiness in this area and improve the wearing comfort. The design of the spaced protrusions 501 can also reduce the direct contact area between the diaper and the skin to a certain extent, thereby reducing friction and reducing skin irritation and damage.

[0030] Finally, please see Figure 1 The bottom layer 6 is made of a bottom film and a sanitary liner from bottom to top. The bottom film is made of microporous breathable PE film with good water-repellent properties, which can effectively prevent urine from seeping into the outside of the diaper and keep the wearer dry and clean. The sanitary liner has good softness and breathability, which improves the comfort when wearing it.

[0031] In this embodiment, the specific implementation scenario is as follows: Considering the characteristics of male and female urine discharge, the core increases the number of polymer particles 102 in the key absorption area, forming a high-absorption zone 103 to quickly absorb urine and reduce surface residue. The non-critical area, i.e., the low-absorption zone 104, has a reduced distribution of polymer particles 102 to improve breathability. Multiple sets of breathable edge seals 105 have internal breathable micropores. These micropores effectively enhance the breathability of the diaper's edge area, reducing stuffiness and improving user comfort. The breathable edge seals 105 not only increase breathability but also prevent urine leakage from the sides to a certain extent, improving the overall protective performance of the diaper. The superabsorbent polymer strips 401 in the high-speed absorption groove 4 can quickly absorb urine. Their strong absorbency ensures that urine is quickly guided and locked inside the core. The guide holes 402 located between the superabsorbent polymer strips 401 are funnel-shaped, with the pore size decreasing from top to bottom. This structure facilitates rapid urine absorption, prevents urine accumulation on the surface, and further improves absorption efficiency. Through the synergistic effect of the super absorbent polymer strip 401 and the guide hole 402, urine is quickly absorbed and dispersed into the deep core, effectively reducing the possibility of urine backflow to the surface and keeping the diaper surface dry. The spaced protrusions 501 inside the crotch ventilation groove 5 and the ventilation grooves 502 located at both ends of the crotch ventilation groove 5 together enhance the breathability of the crotch area, helping to reduce the dampness and stuffiness in this area and improve wearing comfort. The design of the spaced protrusions 501 can also reduce the direct contact area between the diaper and the skin to a certain extent, thereby reducing friction and reducing skin irritation and damage. The bottom layer 6 is made of a bottom film and a sanitary liner from bottom to top. The bottom film is made of microporous breathable PE film with good water-repellent properties, which can effectively prevent urine from seeping to the outside of the diaper and keep the wearer dry and clean. The sanitary liner has good softness and breathability, improving wearing comfort. This utility model adopts a gender-differentiated zoning absorption design, which significantly improves wearing comfort and reduces product costs while ensuring super absorbency.

[0032] 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. An absorbent core for adult diapers with improved absorption speed, comprising an upper absorbent core layer (1), a middle absorbent core layer (2), and a lower absorbent core layer (3), characterized in that: The upper layer (1) and lower layer (3) of the absorbent core are respectively fixedly connected to the upper and lower sides of the middle layer (2) of the absorbent core. High-speed absorption grooves (4) are provided at both the front and rear ends of the top of the upper layer (1). A crotch ventilation groove (5) is provided at the top of the upper layer (1) and between the two sets of high-speed absorption grooves (4). The bottom layer (6) is fixedly connected to the bottom of the lower layer (3). The upper layer (1), middle layer (2) and lower layer (3) of the absorbent core are all made of wood pulp fiber (101) and multiple sets of polymer particles (102). The upper layer (1) and middle layer (2) of the absorbent core are respectively provided with a high absorption zone (103) and a low absorption zone (104). The number of polymer particles (102) in the high absorption zone (103) is greater than that in the low absorption zone (104). The polymer particles (102) in the lower layer (3) of the absorbent core are uniformly distributed.

2. The adult diaper absorbent core for improving absorption speed according to claim 1, characterized in that: The upper layer (1), middle layer (2) and lower layer (3) of the absorbent core are all fixedly connected with breathable sealing edges (105), and breathable micropores are opened inside the multiple sets of breathable sealing edges (105).

3. The adult diaper absorbent core for improving absorption speed according to claim 1, characterized in that: Multiple sets of superabsorbent polymer strips (401) are fixedly connected to the bottom of the high-speed absorption tank (4), and multiple sets of guide holes (402) are opened at the bottom of the high-speed absorption tank (4) and between the multiple sets of superabsorbent polymer strips (401).

4. The adult diaper absorbent core for improving absorption speed according to claim 3, characterized in that: The guide hole (402) has a funnel-shaped aperture, and the aperture of the guide hole (402) decreases from top to bottom.

5. The adult diaper absorbent core for improving absorption speed according to claim 1, characterized in that: The bottom of the crotch ventilation groove (5) is fixedly connected with multiple sets of spaced protrusions (501), and multiple sets of ventilation grooves (502) are opened at the top of the upper layer (1) of the absorbent core and at both the left and right ends of the crotch ventilation groove (5).

6. The adult diaper absorbent core for improving absorption speed according to claim 5, characterized in that: Multiple sets of the spaced protrusions (501) are evenly distributed inside the crotch ventilation groove (5), and the multiple sets of the spaced protrusions (501) are all made of wood pulp fiber (101) and multiple sets of polymer particles (102).

7. The adult diaper absorbent core for improving absorption speed according to claim 1, characterized in that: The bottom layer (6) is made of a composite of a bottom film and a sanitary liner from bottom to top.

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