Paper diaper absorption core body with good absorption effect

By introducing a combination of diversion channels, hydrophilic nonwoven fabric, SAP particles, and polymer water-locking materials into the absorbent core of the diaper, the problem of insufficient absorption rate and capacity of traditional diaper absorbent cores is solved, achieving rapid absorption and water-locking effects, and preventing urine backflow and leakage.

CN224126184UActive Publication Date: 2026-04-17DONGGUAN TIANZHENG PAPER CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
DONGGUAN TIANZHENG PAPER CO LTD
Filing Date
2024-12-31
Publication Date
2026-04-17

AI Technical Summary

Technical Problem

Traditional diaper absorbent cores have limited absorption rate and capacity, making it difficult to quickly lock in urine, which can lead to potential backflow and leakage.

Method used

It adopts a transverse and longitudinal flow channel design on the flow guide layer, combined with the absorption layer structure of hydrophilic non-woven fabric, SAP particles and fluff pulp, as well as the water-locking layer of polymer water-locking material and reinforced non-woven fabric, to achieve rapid absorption and water-locking.

Benefits of technology

It achieves rapid dispersion and uniform absorption of urine, prevents local accumulation and backflow, ensures no urine leakage, and improves absorption efficiency and sealing performance.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of paper diapers, and discloses a paper diaper absorbing core body which is good in absorbing effect and comprises a core body, a flow guide layer, an absorbing layer and a water locking layer are arranged in the core body from top to bottom, and a plurality of transverse and longitudinal flow guide grooves are formed in the upper surface of the flow guide layer. And the lower end of the diversion trench is communicated with the upper end of the absorption layer. When the paper diaper absorption core body is used, urine can be quickly dispersed and guided to the absorption layer through the transverse flow guide grooves and the longitudinal flow guide grooves in the flow guide layer, the flow guide layer made of the hydrophilic non-woven fabric has good hydrophilicity and can quickly absorb the urine and guide the urine into the absorption layer, and the absorption layer is composed of SAP and fluff pulp, so that the absorption core body is convenient to use. By means of the combination, efficient absorption can be achieved, the SAP particles have high water absorption capacity and can rapidly absorb a large amount of urine and convert the urine into gel, and back seepage of the urine is prevented. The fluff pulp plays a role in supporting and guiding flow, so that the SAP is uniformly distributed, and the absorption efficiency is improved.
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Description

Technical Field

[0001] This utility model relates to the field of diaper technology, and in particular to a diaper absorbent core with good absorbency. Background Technology

[0002] As we all know, disposable diapers are a type of hygiene product primarily used to absorb urine and excrement from the human body (especially infants and adults with limited mobility). Their core component is the absorbent core, which locks in urine, transforming the liquid into a gel-like consistency to prevent leakage and keep the surface dry. The design of the absorbent core effectively disperses liquid, reducing skin-to-urine contact and thus lowering the risk of diaper rash and improving the baby's comfort. Furthermore, the structure and thickness of the core also affect the diaper's absorbency and lifespan.

[0003] However, traditional diaper absorbent cores typically use wood pulp and less efficient absorbent materials, resulting in limited absorption rate and capacity, making it difficult to quickly lock in urine. Therefore, technological improvements are urgently needed. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a superior absorbent core for diapers. During use, the absorbent core utilizes transverse and longitudinal channeling grooves on the distribution layer to rapidly disperse and guide urine to the absorbent layer. Upon contact with the diaper, these channeling grooves immediately function, acting as efficient channels to quickly divert urine and prevent localized accumulation. The hydrophilic non-woven fabric distribution layer possesses excellent hydrophilicity, enabling it to quickly absorb urine and guide it into the absorbent layer. The absorbent layer is composed of SAP (superabsorbent polymer) and fluff pulp. This combination achieves highly efficient absorption. The SAP particles have a strong water absorption capacity, rapidly absorbing large amounts of urine and transforming it into a gel-like state, preventing backflow. The fluff pulp provides support and guidance, ensuring even distribution of the SAP and improving absorption efficiency.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A diaper absorbent core with good absorption effect includes a core, and the core includes a flow guiding layer, an absorbent layer and a water-locking layer from top to bottom. The upper surface of the flow guiding layer has a plurality of transverse and longitudinal flow guiding grooves, and the lower end of the flow guiding grooves is connected to the upper end of the absorbent layer.

[0007] Compared with existing diaper absorbent cores, this diaper absorbent core, through the above technical solution, has a strong water-locking ability through the polymer water-locking material, which can firmly lock in the absorbed urine. Even when the baby is active or squeezed, there will be no backflow. The reinforced non-woven fabric increases the strength and sealing of the water-locking layer, ensuring that urine will not leak.

[0008] Furthermore, the outer walls of the front and rear ends of the core are fixedly connected with edge strips;

[0009] The above technical solution, through its edge-fitting design, can better fit the baby's body and prevent urine from leaking from both the front and back.

[0010] Furthermore, protective enclosures are fixedly connected to the middle of the outer walls on both sides of the core.

[0011] The above technical solution, through the enclosure design, can effectively prevent side leakage.

[0012] Furthermore, the flow guiding layer is made of hydrophilic non-woven fabric, and the flow guiding groove is a shallow groove with a depth of about 0.5-1 mm;

[0013] The above technical solution allows urine to be quickly drained through a diversion channel, preventing local urine accumulation.

[0014] Furthermore, the absorbent layer is composed of SAP and fluff pulp, wherein the SAP is granular and uniformly distributed in the fluff pulp;

[0015] Through the above technical solution, SAP particles have a strong water absorption capacity, which can quickly absorb a large amount of urine and transform it into a gel.

[0016] Furthermore, the water-locking layer is a composite layer of polymer water-locking material and reinforced non-woven fabric;

[0017] The above technical solution utilizes the powerful water-locking ability of polymer water-locking materials, while the reinforced non-woven fabric increases the strength and sealing of the water-locking layer.

[0018] This utility model has the following beneficial effects:

[0019] 1. This utility model proposes a diaper absorbent core with excellent absorption effect. Compared with existing diaper absorbent cores, this diaper absorbent core, when in use, can quickly disperse and guide urine to the absorbent layer through the horizontal and vertical guide channels on the guide layer. When urine comes into contact with the diaper, the guide channels immediately play their role, acting like efficient channels to quickly divert urine and avoid local urine accumulation. The guide layer, made of hydrophilic non-woven fabric, has good hydrophilicity and can quickly absorb urine and guide it into the absorbent layer. The absorbent layer is composed of SAP (super absorbent polymer) and fluff pulp, a combination that enables high-efficiency absorption. SAP particles have strong water absorption capacity and can quickly absorb large amounts of urine and transform them into a gel, preventing urine backflow. The fluff pulp plays a supporting and guiding role, ensuring that the SAP is evenly distributed and improving absorption efficiency.

[0020] 2. The present invention proposes a diaper absorbent core with good absorption effect. Compared with existing diaper absorbent cores, this diaper absorbent core has a strong water-locking ability through the polymer water-locking material, which can firmly lock in the absorbed urine. Even when the baby is active or squeezed, there will be no backflow. The reinforced non-woven fabric increases the strength and sealing of the water-locking layer, ensuring that urine will not leak. It has high practical performance. Attached Figure Description

[0021] Figure 1 This is an isometric view of an absorbent core for a diaper with good absorbency proposed in this utility model;

[0022] Figure 2 This is an axial cross-sectional view of an absorbent core for a diaper with good absorbency proposed in this utility model;

[0023] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0024] Legend:

[0025] 1. Core; 11. Flow guiding layer; 12. Flow guiding channel; 13. Absorption layer; 14. Water-locking layer; 15. Edge; 16. Protective enclosure. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Reference Figure 1-3The present invention provides an embodiment of a diaper absorbent core with good absorption effect, comprising a core 1, wherein the core 1 includes a flow guiding layer 11, an absorbent layer 13 and a water-locking layer 14 from top to bottom. The upper surface of the flow guiding layer 11 is provided with a plurality of transverse and longitudinal flow guiding grooves 12, and the lower end of the flow guiding grooves 12 communicates with the upper end of the absorbent layer 13.

[0028] Compared to existing diaper absorbent cores, this diaper absorbent core utilizes a high-polymer water-locking material with strong water-locking capabilities to firmly lock in absorbed urine. Even when the baby is active or squeezed, there will be no backflow. The reinforced non-woven fabric further enhances the strength and sealing of the water-locking layer 14, ensuring that urine will not leak.

[0029] The outer walls of the front and rear ends of the core 1 are fixedly connected with edge strips 15. The edge strips 15 are designed to better fit the baby's body and prevent urine from leaking from both ends. The middle of the outer walls on both sides of the core 1 is fixedly connected with a guard 16. The guard 16 is designed to effectively prevent side leakage. The diversion layer 11 is made of hydrophilic non-woven fabric. The diversion groove 12 is a shallow groove with a depth of about 0.5-1 mm. The diversion groove 12 quickly diverts urine and avoids local urine accumulation. The absorbent layer 13 is composed of SAP super absorbent resin and fluff pulp. The SAP is granular and evenly distributed in the fluff pulp. The SAP particles have a strong water absorption capacity and can quickly absorb a large amount of urine and turn it into a gel. The water-locking layer 14 is a composite layer of polymer water-locking material and reinforced non-woven fabric. The polymer water-locking material has a strong water-locking capacity, while the reinforced non-woven fabric increases the strength and sealing of the water-locking layer 14.

[0030] Working principle: When urine comes into contact with the diaper, it is first quickly dispersed and guided to the absorbent layer 13 by the guide channel 12 on the guide layer 11 and the hydrophilic non-woven fabric. The SAP and fluff pulp in the absorbent layer 13 work together to quickly absorb the urine and form a gel to lock in the moisture. The polymer water-locking material and the reinforced non-woven fabric composite layer of the water-locking layer 14 further prevent urine backflow. At the same time, the front and back edges 15 of the core 1 and the side guards 16 prevent urine from leaking from the front and back.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An absorbent paper diaper core body with good absorption effect, comprising a core body (1), characterized in that: The core (1) includes a flow guiding layer (11), an absorption layer (13) and a water-locking layer (14) from top to bottom. The upper surface of the flow guiding layer (11) is provided with a plurality of transverse and longitudinal flow guiding grooves (12), and the lower end of the flow guiding groove (12) is connected to the upper end of the absorption layer (13).

2. The paper diaper core body with good absorption effect according to claim 1, characterized in that: The outer walls of the front and rear ends of the core (1) are fixedly connected with edge (15).

3. The paper diaper core of claim 1, wherein the paper diaper core comprises: a first layer of absorbent material; a second layer of absorbent material; and a third layer of absorbent material. The core (1) has protective enclosures (16) fixedly connected to the middle of the outer walls on both sides.

4. The paper diaper core of claim 1, wherein the paper diaper core comprises: a first layer of absorbent material; a second layer of absorbent material; and a third layer of absorbent material. The flow guiding layer (11) is made of hydrophilic non-woven fabric, and the flow guiding groove (12) is a shallow groove with a depth of about 0.5-1 mm.

5. The paper diaper core of claim 1, wherein the paper diaper core comprises: a first layer of absorbent material; a second layer of absorbent material; and a third layer of absorbent material. The absorbent layer (13) is composed of SAP superabsorbent resin and fluff pulp, with SAP in granular form and evenly distributed in the fluff pulp.

6. The paper diaper core of claim 1, wherein the paper diaper core comprises: a first layer of a first material; a second layer of a second material; and a third layer of a third material. The water-locking layer (14) is a composite layer of polymer water-locking material and reinforced non-woven fabric.