Absorbing core body of paper diaper

Abstract

The utility model is suitable for the technical field of absorption cores, and provides an absorption core of a paper diaper, which comprises a lower layer non-woven fabric, a middle fluffy part is arranged at the top end of the lower layer non-woven fabric, a plurality of groups of SAP surface layers are arranged between the lower layer non-woven fabric and the middle fluffy part, and an upper layer non-woven fabric is arranged at the tops of the SAP surface layers; the middle fluffy part comprises multiple sets of middle protruding layers, and a middle pressing layer is arranged between every two sets of middle protruding layers. The paper diaper solves the problems that the utilization rate of the absorption core body is not high, a large amount of super absorbent resin (SAP) needs to be added to the whole surface for compensation, the whole texture of the paper diaper becomes stiff, and the cost is increased. The functions of improving the softness of the product, improving the utilization rate of the absorption core body, enlarging the absorption area, enhancing the softness, improving the absorption capacity, keeping dry and comfortable for a long time, locking urine, being good in air permeability, improving the wearing experience and reducing the production cost of the product are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of absorbent cores, and more specifically, to an absorbent core of a diaper. Background Art

[0002] The absorbent core is a key component in determining diaper product quality. It primarily absorbs and retains liquids, keeping the surface of the core in contact with the body relatively dry. Through technological advancements, the traditional fluff pulp core has evolved into a composite core. Composite cores typically have a five-layer structure: upper and lower nonwoven fabric layers, upper and lower SAP layers, and a center fluffy layer.

[0003] Currently, a prominent issue in the diaper market is the generally low utilization rate of the absorbent core. To achieve good absorption, large amounts of super absorbent polymer (SAP) are often added throughout the diaper surface to compensate for this deficiency. However, this approach comes with a number of drawbacks. The large amount of SAP added undoubtedly increases product cost. As a key raw material, SAP is not cheap. To ensure diaper absorption performance, companies must invest more in SAP, significantly increasing diaper production costs. These increased costs are ultimately passed on to consumers, leading to higher diaper prices and creating financial pressure. Furthermore, the large amount of SAP added can also result in a lack of softness. SAP expands and hardens after absorbing urine, and the large amount of SAP added throughout the diaper surface makes the overall texture of the diaper stiff. This not only reduces wearing comfort but can also cause friction and pressure on delicate skin, increasing the risk of skin problems. Furthermore, overly stiff diapers can impair freedom of movement, making them uncomfortable.

[0004] Therefore, an absorbent core of a diaper is proposed, which can improve the softness of the product, improve the utilization rate of the absorbent core, expand the absorption area, enhance the softness, improve the absorption capacity, keep dry for a long time, lock urine, and has good breathability, thereby improving the wearing experience and reducing the production cost of the product. Utility Model Content

[0005] In response to the shortcomings of the existing technology, the purpose of this utility model is to provide an absorbent core for diapers that improves product softness, increases the utilization rate of the absorbent core, expands the absorption area, enhances softness, improves absorption capacity, keeps dry for a long time, locks urine, has good breathability, improves the wearing experience, and reduces product production costs.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A diaper absorbent core comprises a lower layer of non-woven fabric, a middle fluffy portion is provided at the top of the lower layer of non-woven fabric, multiple groups of SAP surface layers are provided between the lower layer of non-woven fabric and the middle fluffy portion, and an upper layer of non-woven fabric is provided on top of the SAP surface layers; the middle fluffy portion comprises multiple groups of middle raised layers, and a middle pressing layer is provided between two groups of the middle raised layers.

[0008] By adopting this technical solution, the lower layer of non-woven fabric uses a 12-15g / ㎡ non-woven fabric, which can effectively prevent urine absorbed by the absorbent core from continuing to leak downward, ensuring that the urine is locked inside the diaper to avoid soiling clothing and bedding. The middle fluffy part uses a 40-45g / ㎡ non-woven fabric to expand the absorption area, enhance softness, improve absorption capacity, and keep the diaper dry for a long time.

[0009] The utility model is further configured as follows: the lower non-woven fabric layer and the middle raised layer are bonded together using a hot melt adhesive process, and the middle pressed layer is bonded using a heat-sealed mesh process.

[0010] The utility model is further configured as follows: a plurality of groups of the intermediate raised layers and the intermediate pressed layers are arranged alternately, and the tops thereof are arranged as a mesh raised structure.

[0011] The present invention is further configured as follows: the width of the middle raised layer is set to a, the value of a is 10 mm, and the width of the middle pressed layer is set to b, the value of b is 10 mm.

[0012] The utility model is further configured as follows: the length of the middle raised layer is set to c, the value of c is 100 mm, and the length of the middle pressed layer is set to d, the value of d is 100 mm.

[0013] By adopting the above technical solution, the middle raised layer and the middle pressed layer are staggered every 10 mm, and the length of 100 mm can effectively fit the human body, which can further improve the softness, improve the absorption capacity, keep dry for a long time, lock urine, and have good breathability, thereby improving the wearing experience.

[0014] The utility model is further configured as follows: a plurality of groups of SAP surface layers are arranged inside the middle raised layer, and the SAP surface layers and the upper non-woven fabric are bonded by hot melt adhesive technology.

[0015] By adopting this technical solution, the interlaced middle raised layer and the middle laminated layer effectively conform to the body, further improving softness and absorbency, and maintaining dryness for a long time. Adding the SAP top layer only within the middle raised layer reduces the amount of SAP used and reduces product production costs. The upper non-woven fabric prevents urine back-seepage and helps stabilize the SAP top layer, preventing it from shifting.

[0016] In summary, this application includes at least one of the following beneficial technical effects:

[0017] 1. The lower layer of non-woven fabric uses 12-15g / ㎡ non-woven fabric, which can effectively prevent urine absorbed by the absorbent core from continuing to leak downward, ensuring that the urine is locked inside the diaper to avoid soiling clothes and bedding. The middle fluffy part uses 40-45g / ㎡ non-woven fabric to expand the absorption area, enhance softness, improve absorption capacity, and keep the diaper dry for a long time.

[0018] 2. The middle raised layer and the middle pressed layer are staggered every 10mm, and the length of 100mm can effectively fit the human body, which can further improve the softness, improve the absorption capacity, keep dry for a long time, lock urine, and have good breathability, thereby improving the wearing experience.

[0019] 3. The interlaced middle raised layer and the middle laminated layer effectively conform to the body, further enhancing softness and absorbency, keeping the fabric dry for extended periods. Adding the SAP top layer only within the middle raised layer reduces the amount of SAP used and production costs. The top nonwoven fabric prevents urine back-seepage and helps stabilize the SAP top layer, preventing it from shifting. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic cross-sectional view of the absorbent core of the diaper of the present invention.

[0021] Figure 2 This is a schematic diagram of the dimensions of the absorbent core of the diaper of the present invention.

[0022] Figure 3 This is a front view of the absorbent core of the diaper of the present invention.

[0023] Description of reference numerals: 1, lower layer non-woven fabric;

[0024] 2. Middle fluffy part; 21. Middle raised layer; 22. Middle pressed layer;

[0025] 3. SAP surface;

[0026] 4. Upper layer of non-woven fabric. DETAILED DESCRIPTION

[0027] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0028] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0029] For example 1, please refer to Figure 1-2 , the utility model provides the following technical solutions:

[0030] Specifically refers to an absorbent core of a diaper, see Figure 1 , including a lower layer of non-woven fabric 1, the lower layer of non-woven fabric 1 can effectively prevent the urine absorbed by the absorbent core from continuing to leak downward, ensuring that the urine is locked inside the diaper to avoid soiling clothes and bedding. A middle fluffy part 2 is provided at the top, and the middle fluffy part 2 with a mesh structure can expand the absorption area, enhance softness, improve absorption capacity, and keep dry for a long time. Multiple groups of SAP surface layers 3 are provided between the lower layer of non-woven fabric 1 and the middle fluffy part 2, which can efficiently absorb urine and prevent backseepage. An upper layer of non-woven fabric 4 is provided on the top of the SAP surface layer 3. The upper layer of non-woven fabric 4 can prevent urine backseepage and assist in fixing the SAP surface layer 3 to avoid displacement.

[0031] See Figure 1 The middle fluffy portion 2 includes multiple sets of middle raised layers 21, with an intermediate lamination layer 22 positioned between two sets of middle raised layers 21. The lower nonwoven fabric 1 is bonded to the middle raised layers 21 using a hot melt adhesive process, while the middle lamination layer 22 is bonded using a heat-sealed mesh process. The multiple sets of middle raised layers 21 and the middle lamination layer 22 are interlaced, and their tops are configured with a mesh-like raised structure. Multiple sets of SAP surface layers 3 are positioned within the middle raised layers 21, and the SAP surface layers 3 are bonded to the upper nonwoven fabric 4 using a hot melt adhesive process.

[0032] Specifically, the lower layer of non-woven fabric 1 adopts a non-woven fabric with a specification of 12-15g / ㎡, which can effectively prevent the urine absorbed by the absorbent core from continuing to leak downward, ensuring that the urine is locked inside the diaper to avoid soiling clothes and bedding. The middle fluffy part 2 adopts a non-woven fabric of 40-45g / ㎡, which can expand the absorption area, enhance softness, improve absorption capacity, and keep dry for a long time. At the same time, the staggered arrangement of the middle raised layer 21 and the middle pressed layer 22 can effectively fit the human body, further improve softness, improve absorption capacity, and keep dry for a long time. Adding the SAP surface layer 3 only inside the middle raised layer 21 can reduce the amount of SAP surface layer 3 and reduce product production costs. The upper layer of non-woven fabric 4 can prevent urine from seeping back and assist in fixing the SAP surface layer 3 to avoid displacement.

[0033] See Figure 2 The width of the middle raised layer 21 is set to a, the value of a is 10 mm, the width of the middle pressed layer 22 is set to b, the value of b is 10 mm, the length of the middle raised layer 21 is set to c, the value of c is 100 mm, the length of the middle pressed layer 22 is set to d, the value of d is 100 mm.

[0034] Specifically, the middle raised layer 21 and the middle pressed layer 22 are staggered every 10 mm, and the length of 100 mm can effectively fit the human body, which can further improve the softness, improve the absorption capacity, keep dry for a long time, lock urine, and have good breathability, thereby improving the wearing experience.

[0035] Obviously, the embodiments described above are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

Claims

1. An absorbent core of a diaper, characterized in that: The invention comprises a lower non-woven fabric (1), wherein a middle fluffy portion (2) is provided at the top of the lower non-woven fabric (1), a plurality of SAP surface layers (3) are provided between the lower non-woven fabric (1) and the middle fluffy portion (2), and an upper non-woven fabric (4) is provided on the top of the SAP surface layer (3); The middle fluffy portion (2) comprises a plurality of groups of middle convex layers (21), and a middle pressing layer (22) is provided between two groups of the middle convex layers (21).

2. The absorbent core of a diaper according to claim 1, characterized in that: The lower non-woven fabric (1) and the middle raised layer (21) are bonded together using a hot melt adhesive process, and the middle pressed layer (22) is bonded using a heat-sealed mesh process.

3. The absorbent core of a diaper according to claim 2, characterized in that: A plurality of groups of the intermediate raised layers (21) and the intermediate pressed layers (22) are arranged alternately, and the tops thereof are arranged as a mesh raised structure.

4. The absorbent core of a diaper according to claim 1, characterized in that: The width of the middle raised layer (21) is set to a, and the value of a is 10 mm. The width of the middle pressed layer (22) is set to b, and the value of b is 10 mm.

5. The absorbent core of a diaper according to claim 4, characterized in that: The length of the middle raised layer (21) is set to c, the value of c is 100 mm, and the length of the middle pressed layer (22) is set to d, the value of d is 100 mm.

6. The absorbent core of a diaper according to claim 5, characterized in that: Multiple groups of the SAP surface layers (3) are arranged inside the middle raised layer (21), and the SAP surface layers (3) and the upper non-woven fabric (4) are bonded using a hot melt adhesive process.

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