Absorption product

Abstract

The utility model relates to an absorption product which comprises a surface layer, a flow guide layer, a bottom film layer and an absorption core body. The surface layer is arranged on one side close to a human body; the flow guide layer is arranged below the surface layer; the bottom film layer is arranged on the side far away from the human body and is constructed to be located below the flow guide layer; the absorption core body is arranged between the flow guide layer and the bottom film layer; the absorption core body is formed by compounding a weak affinity layer, an absorption layer and a diffusion layer; wherein the absorption layer is arranged below the weak affinity layer; the absorbing layer comprises an absorbing material; a diffusion layer disposed below the absorption layer and configured to be made of a melt-blown material; the hydrophilicity of the diffusion layer is higher than that of the weak hydrophilic layer; the flowability of a liquid in the diffusion layer is at least greater than its flowability in the weakly hydrophilic layer. And the liquid can be quickly diffused after being absorbed to the bottom by the absorption core body and cannot reversely permeate upwards, so that the dryness of the surface of the absorption product is improved.

Description

Technical Field

[0001] The present disclosure relates to the field of sanitary products, and in particular to an absorbent product. Background Art

[0002] In the prior art, absorbent cores for absorbent products have a variety of different structures. These cores can have varying numbers of layers, such as three, five, or seven. They can also be made from a variety of raw materials, such as polymers, dust-free paper, fluffy nonwovens, spunlace nonwovens, and wet-strength paper. Absorbent cores constructed from multiple layers of these materials are typically relatively heavy, weighing approximately 180-500 gsm, resulting in a poor user experience.

[0003] Furthermore, existing absorbent cores are mostly made of short fibers, resulting in poor diffusion. Liquid is absorbed in the center of the absorbent core and cannot diffuse further toward the ends, resulting in material waste. In absorbent cores made of hydrophilic materials, the absorption capacity of the upper and lower layers is similar, preventing the formation of an absorption gradient. This makes the absorbent core susceptible to reverse osmosis after absorbing liquid, making it difficult to maintain a dry surface. Utility Model Content

[0004] In order to solve the problems existing in the prior art, the present disclosure provides an absorbent product.

[0005] According to a first aspect of the present disclosure, there is provided an absorbent article comprising:

[0006] The surface layer is arranged on the side close to the human body;

[0007] a guide layer, arranged below the surface layer;

[0008] a bottom film layer, arranged on a side away from the human body and configured to be located below the guide layer;

[0009] An absorbent core, the absorbent core being disposed between the guide layer and the bottom film layer; the absorbent core being constructed by a composite of a weak affinity layer, an absorbent layer, and a diffusion layer;

[0010] Wherein, the absorption layer is arranged below the weak affinity layer; the absorption layer comprises an absorption material;

[0011] The diffusion layer is arranged below the absorption layer and is constructed of a meltblown material; the hydrophilicity of the diffusion layer is higher than that of the weakly hydrophilic layer; and the fluidity of the liquid in the diffusion layer is at least greater than its fluidity in the weakly hydrophilic layer.

[0012] In one embodiment of the present disclosure, the weak affinity layer is a meltblown non-woven fabric; the water absorption rate of the meltblown non-woven fabric is 5-15, and the gram weight is 15-80 gsm.

[0013] In one embodiment of the present disclosure, the weakly affinity layer includes a water-repellent spunbond non-woven fabric and a hydrophilic spunbond non-woven fabric; the water-repellent spunbond non-woven fabric is arranged above the hydrophilic spunbond non-woven fabric.

[0014] In one embodiment of the present disclosure, a plurality of flow guide holes are provided on the weakly affinity layer, and the flow guide holes are constructed to penetrate the water-repellent spunbond non-woven fabric and the hydrophilic spunbond non-woven fabric.

[0015] In one embodiment of the present disclosure, the absorbent material is at least one of a high molecular water-absorbing resin or a super absorbent fiber; and the gram weight of the absorbent material is higher than 10 gsm.

[0016] In one embodiment of the present disclosure, the diffusion layer has a water absorption rate of 5-20 and a gram weight of 15-250 gsm.

[0017] In one embodiment of the present disclosure, the diffusion layer has a water absorption rate of 8-15 and a gram weight of 60-300 gsm.

[0018] In one embodiment of the present disclosure, a side protection layer is further included, wherein the side of the side protection layer adjacent to the absorbent core is constructed to cover the side edge of the surface layer, and the side away from the absorbent core is constructed to be compounded on top of the bottom film layer.

[0019] In one embodiment of the present disclosure, the surface layer and / or the absorption core contains one of tea polyphenols, tea tree essential oil, bamboo charcoal fiber, plant tannin, grapefruit extract, apigenin, aloe vera, chitosan, chamomile, quaternary ammonium salt, graphene, activated carbon, probiotics, cnidium monnieri, purslane, prickle fruit, sophora flavescens, dipotassium glycyrrhizate, Centella asiatica, gentian, mugwort, sodium hyaluronate, ceramide, and scutellaria baicalensis.

[0020] In one embodiment of the present disclosure, the absorbent core has a grammage of 100-450 gsm.

[0021] One beneficial effect of the present disclosure is that by providing a weakly hydrophilic layer with low hydrophilicity and poor diffusivity on the side of the absorbent core close to the surface layer, and providing a diffusive layer with high hydrophilicity and strong diffusivity on the side of the absorbent core close to the base film layer, an absorption gradient is formed within the absorbent core. After being absorbed into the absorbent core, liquid can diffuse rapidly without back-osmosis upward, thereby improving the dryness of the absorbent product surface and enhancing the user experience.

[0022] Other features and advantages of the present disclosure will become apparent from the following detailed description of exemplary embodiments of the present disclosure with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0024] Figure 1 is a schematic diagram of the cross-sectional structure of the absorbent product provided in the first embodiment of the present disclosure;

[0025] Figure 2 is a schematic diagram of the cross-sectional structure of an absorbent product provided in Example 2 of the present disclosure;

[0026] Figure 3 yes Figure 2 A partial enlarged view of point A in the middle;

[0027] Figure 4 It is a schematic diagram of the cross-sectional structure of the absorbent product provided in Example 3 of the present disclosure.

[0028] Figures 1 to 4 The one-to-one correspondence between the component names and the reference numerals is as follows:

[0029] 1. Surface layer; 211. Meltblown non-woven fabric; 212. Water-repellent spunbond non-woven fabric; 213. Hydrophilic spunbond non-woven fabric; 214. Diversion holes; 22. Absorbent material; 23. Diffusion layer; 24. Composite layer; 3. Bottom film layer; 4. Edge protection layer; 5. Diversion layer. DETAILED DESCRIPTION

[0030] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present disclosure.

[0031] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present disclosure, its application, or uses.

[0032] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0033] It should be noted that like reference numerals and letters refer to like items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0034] In this document, “upper”, “lower”, “front”, “back”, “left”, “right”, etc. are only used to indicate the relative position relationship between related parts, rather than to limit the absolute positions of these related parts.

[0035] In this article, "first", "second", etc. are only used to distinguish each other, and do not indicate the importance and order, or the prerequisite for each other's existence.

[0036] In this document, “equal”, “same”, etc. are not strictly limited in a mathematical and / or geometric sense, but also include errors that can be understood by those skilled in the art and are allowed in manufacturing or use.

[0037] The present disclosure provides an absorbent product, which may be a baby diaper, a baby diaper, a baby pull-up pants, an adult diaper, an adult care product, a sanitary napkin, a sanitary pad or a menstrual pants, etc. In the embodiments of the present application, the absorbent product is a sanitary napkin as an example for specific description.

[0038] The absorbent product provided by the present disclosure includes: a surface layer, a guide layer, a bottom film layer and an absorbent core. Among them, the surface layer is arranged on the side close to the human body. Specifically, the surface layer is a material that is directly close to the human body and is usually made of a soft, skin-friendly, and liquid-conducting material. The guide layer is arranged below the surface layer. The guide layer is conducive to quickly guiding the liquid downward from the surface layer, and helps to make the liquid flow in one direction, and can prevent the liquid from back to the surface layer. The bottom film layer is arranged on the side away from the human body and is constructed to be located below the guide layer. The bottom film layer is made of a water-repellent material. When the liquid flows downward to the bottom film layer in the absorbent product, it will be blocked, thereby preventing the liquid from leaking from the bottom of the absorbent product.

[0039] The absorbent core is arranged between the guide layer and the bottom film layer. The liquid can be absorbed by the absorbent core after passing through the surface layer and the guide layer and stored in the absorbent core. The absorbent core has a certain thickness and can absorb and store a certain amount of liquid. The absorbent core of the present application is constructed to be formed by a composite of a weak affinity layer, an absorption layer and a diffusion layer, wherein the weak affinity layer is located on the side adjacent to the guide layer, the absorption layer is arranged below the weak affinity layer, and the diffusion layer is arranged below the absorption layer, that is, on the side adjacent to the bottom film layer.

[0040] The absorbent layer includes an absorbent material, specifically at least one of a polymeric absorbent resin or a super absorbent fiber. Specifically, polymeric absorbent resin (SAP) is a functional polymer material with exceptional water absorption and high water retention. It can absorb hundreds or even thousands of times its own weight in water and retains a strong water retention capacity. Furthermore, SAP is non-toxic, harmless, and non-polluting, making it a safe and reliable material. Super absorbent fiber (SAF) is a fibrous super absorbent material. SAF polymer is first dried and solidified to form filaments, which are then cooled and cut into short fibers of a specific length, resulting in a fiber material with exceptionally high water absorption capacity.

[0041] The diffusion layer is constructed from a meltblown material. Hydrophilicity can be increased by spraying the diffusion layer with a hydrophilic oil or by adding a hydrophilic masterbatch to the diffusion layer. The fluidity of the liquid in the diffusion layer is at least greater than that in the weakly hydrophilic layer.

[0042] The present invention forms an absorption gradient within the absorbent core by configuring the side of the absorbent core near the surface layer as a weakly hydrophilic layer with low diffusivity, and the side of the absorbent core near the base film layer as a diffusion layer with high hydrophilicity and high diffusivity. This allows liquid to quickly diffuse after being absorbed into the absorbent core, rather than seeping upwards. This improves the dryness of the absorbent product's surface and enhances the user experience.

[0043] The specific implementation of the present disclosure is described below with reference to the accompanying drawings and three embodiments.

[0044] Example 1

[0045] refer to Figure 1 This embodiment provides an absorbent article comprising: a surface layer 1, a fluid distribution layer 5, a base film layer 3, and an absorbent core. The surface layer 1 is disposed on the side closest to the human body. Specifically, the surface layer 1 is the material that comes into direct contact with the human body and is typically made of a soft, skin-friendly, and fluid-conducting material. Specifically, the surface layer 1 in this embodiment is made of a hot air nonwoven fabric.

[0046] The guide layer 5 is positioned below the surface layer. It facilitates the rapid downward flow of liquid from the surface layer 1 and helps maintain unidirectional liquid flow, preventing liquid from seeping back into the surface layer 1. The guide layer 5 can be made of materials such as air-through nonwoven fabric, dust-free paper, spunlace nonwoven fabric, and spunbond nonwoven fabric. The guide layer 5 enhances the absorbent product's absorption performance.

[0047] The bottom film layer 3 is arranged on the side away from the human body and is constructed to be located below the guide layer 5. The bottom film layer 3 is made of water-repellent material. Specifically, the bottom film layer 3 in this embodiment uses a PE breathable film. When the liquid flows downward to the bottom film layer 3 in the absorbent product, it will be blocked, thereby preventing the liquid from leaking from the bottom of the absorbent product.

[0048] The absorbent core is arranged between the guide layer 5 and the bottom film layer 3. The liquid can be absorbed by the absorbent core after passing through the surface layer 1 and the guide layer 5 and stored in the absorbent core. The absorbent core has a certain thickness and can absorb and store a certain amount of liquid. Figure 1 As shown, the absorption core of the present application is constructed to be composed of a weak affinity layer, an absorption layer and a diffusion layer 23, wherein the weak affinity layer is located on the side adjacent to the guide layer 5, the absorption layer is arranged below the weak affinity layer, and the diffusion layer 23 is arranged below the absorption layer, that is, on the side adjacent to the bottom film layer 3.

[0049] The weakly affinitive layer can partially absorb liquid, and the liquid is not easily diffused in the weakly affinitive layer, but will quickly flow downward to the absorption layer. In one embodiment of the present disclosure, the weakly affinitive layer is a meltblown non-woven fabric 211. Specifically, this embodiment uses a hydrophilic oil agent to give the meltblown non-woven fabric 211 a weakly affinitive property. The hydrophilic oil agent can be sprayed onto the lower layer of the meltblown non-woven fabric 211, and the hydrophilic oil agent can be completely immersed in the meltblown non-woven fabric 211, thereby giving it a weakly affinitive property. The water absorption rate of the meltblown non-woven fabric 211 is 5-15, and the gram weight is 15-80 gsm.

[0050] The absorbent layer includes absorbent material 22. Specifically, the absorbent material 22 is at least one of a polymeric absorbent resin or a super absorbent fiber. Specifically, polymeric absorbent resin (SAP) is a functional polymer material with exceptional water absorption and high water retention; super absorbent fiber (SAF) is a fibrous super absorbent material. In one embodiment of the present disclosure, the absorbent material 22 has a grammage exceeding 10 gsm. Using polymeric absorbent resin (SAP) and / or super absorbent fiber (SAF) as the absorbent layer effectively improves the overall water absorption rate of the absorbent core, trapping liquid in the fluid flow and thus ensuring the absorbent core's liquid absorption function.

[0051] The diffusion layer 23 is constructed of a meltblown material. A hydrophilic oil can be sprayed onto the diffusion layer, or a hydrophilic masterbatch can be added to the diffusion layer to increase the hydrophilicity of the diffusion layer 23 compared to the less hydrophilic layer. In this embodiment, 5%-10% of the hydrophilic masterbatch can be added to the diffusion layer 23, or a large amount of the hydrophilic oil can be sprayed onto at least the side of the diffusion layer 23 facing the surface layer 1, thereby imparting a strong hydrophilic property to the diffusion layer 23.

[0052] In one embodiment of the present disclosure, the diffusion layer 23 has a water absorption rate of 5-20 and a grammage of 15-250 gsm. Preferably, the diffusion layer 23 has a water absorption rate of 8-15 and a grammage of 60-300 gsm.

[0053] The fluidity of the liquid in the diffusion layer 23 is at least greater than its fluidity in the weak affinity layer. Liquid flowing downward from the absorbent layer into the diffusion layer 23 diffuses rapidly, allowing the liquid to be fully and evenly absorbed. The diffused liquid is less likely to seep upward, thus keeping the surface layer 1 dry. For the entire absorbent core, the liquid diffusion area in the upper layer (i.e., the weak affinity layer) is smaller, while the liquid diffusion area in the lower layer (i.e., the diffusion layer 23) is larger. This creates a single-point infiltration effect, allowing liquid to flow unidirectionally within the absorbent core to the lower layer.

[0054] The present invention forms an absorption gradient within the absorbent core by providing a weakly hydrophilic layer with low hydrophilicity and poor diffusivity on the side of the absorbent core close to the surface layer 1, and providing a diffusion layer 23 with high hydrophilicity and strong diffusivity on the side of the absorbent core close to the base film layer 3. This allows liquid to diffuse rapidly after being absorbed into the absorbent core without back-osmosis upward, thereby improving the dryness of the absorbent product surface and enhancing the user experience.

[0055] In one embodiment of the present disclosure, the weak affinity layer, the absorption layer, and the diffusion layer 23 are glued together to form a complete absorbent core. The three layers of the absorbent core are firmly fixed and connected, and are not prone to lumping, ensuring the integrity and deformation resistance of the absorbent core.

[0056] In one embodiment of the present disclosure, the absorbent core has a grammage of 100-450 gsm. Compared to the 180-500 gsm absorbent cores of the prior art, the present disclosure reduces the overall grammage of the absorbent core by providing a relatively thin three-layer structure while ensuring absorption efficiency, thereby reducing the weight of the absorbent product. The absorbent product is lighter and thinner, improving the user experience.

[0057] In one embodiment of the present disclosure, Figure 1 As shown, the absorbent article further includes an edge protection layer 4, the side of the edge protection layer 4 adjacent to the absorbent core is constructed to cover the side of the surface layer 1, and the side away from the absorbent core is constructed to be compounded on the top of the bottom film layer 3. The edge protection layer 4 can be made of hot air non-woven fabric. There can be two edge protection layers 4, and the two edge protection layers 4 respectively cover the two side edges of the surface layer 1. The sides of the two edge protection layers 4 away from the absorbent core extend outward to be compounded with the bottom film layer 3, thereby completely wrapping the absorbent core therein. It is understandable that when a user wears an absorbent article such as a sanitary napkin, the absorbent core will be squeezed, and under the action of pressure, the liquid in the absorbent core is likely to leak from the side. The present disclosure seals the edge of the absorbent core through the edge protection layer 4, thereby achieving a leak-proof effect.

[0058] In one embodiment of the present disclosure, the surface layer 1 and / or the absorbent core contain at least one of tea polyphenols, tea tree essential oil, bamboo charcoal fiber, plant tannin, grapefruit extract, apigenin, aloe vera, chitosan, chamomile, quaternary ammonium salt, graphene, activated carbon, probiotics, Cnidium monnieri, Portulaca oleracea, Prinus utilis, Sophora flavescens, dipotassium glycyrrhizate, Centella asiatica, Gentiana scabra, Artemisia argyi, sodium hyaluronate, ceramide, and Scutellaria baicalensis. It is understandable that menstrual blood contains nutrients such as protein, amino acids, rich enzymes and antibodies, which are very easy to breed bacteria. If the user changes the sanitary napkin at a long interval, the menstrual blood accumulated on the sanitary napkin is likely to produce an odor. In addition, when the sanitary napkin is worn for a long time, users with sensitive skin are prone to mild allergic reactions. Therefore, antibacterial, deodorizing and anti-allergic ingredients can be added to the surface layer 1 and / or the absorbent core. For example, a polymer absorbent resin (SAP) or super absorbent fiber (SAF) containing deodorizing ingredients (such as tea polyphenols, tea tree essential oil, bamboo charcoal fiber, plant tannin, grapefruit extract, activated carbon, etc.) can be added to the absorbent layer of the absorbent core. Antibacterial ingredients (such as apigenin, aloe vera, chitosan, chamomile, quaternary ammonium salts, graphene, tea polyphenols, probiotics, etc.) can be added to the weak affinity layer and / or diffusion layer 23. Anti-allergic ingredients such as Cnidium monnieri, Portulaca oleracea, Prinus utilis, Sophora flavescens, chamomile, dipotassium glycyrrhizate, Centella asiatica, Gentiana scabra, Artemisia argyi, sodium hyaluronate, ceramide, and Scutellaria baicalensis can also be added to the surface layer 1 or the absorbent core. It should be noted that the deodorizing, antibacterial, and anti-allergic ingredients are not limited to the above ingredients. These ingredients can slow the growth of bacteria, remove odors, prevent user allergies, and enhance the user experience.

[0059] Example 2

[0060] This embodiment also provides an absorbent product. The difference between this embodiment and embodiment 1 is that the material and structure of the weak affinity layer in the absorbent core are different. The other structures are exactly the same as those in embodiment 1 and will not be repeated here.

[0061] refer to Figure 2 and Figure 3 The weak affinity layer of this embodiment includes a water-repellent spunbond non-woven fabric 212 and a hydrophilic spunbond non-woven fabric 213. The water-repellent spunbond non-woven fabric 212 is arranged above the hydrophilic spunbond non-woven fabric 213. In other words, the water-repellent spunbond non-woven fabric 212 is arranged on the side close to the guide layer 5, and the hydrophilic spunbond non-woven fabric 213 is arranged on the side close to the absorbent layer. The structure of the water-repellent spunbond non-woven fabric 212 and the hydrophilic spunbond non-woven fabric 213 arranged up and down makes the weak affinity layer have an absorption gradient, and the liquid can flow toward the more hydrophilic material, thereby making it easy for the liquid to flow from the surface layer 1 to the absorbent layer. The liquid in the absorbent core is not prone to reverse osmosis, and the surface layer 1 can remain dry.

[0062] In one embodiment of the present disclosure, Figure 3 As shown, the weakly hydrophilic layer is provided with a plurality of guide holes 214, which are configured to penetrate the water-repellent spunbond nonwoven fabric 212 and the hydrophilic spunbond nonwoven fabric 213. The guide holes 214 can be formed by embossing, and the liquid can be guided through the guide holes 214, so that the liquid can be absorbed downward more quickly.

[0063] It is understandable that the water-repellent spunbond nonwoven fabric 212 itself has poor water absorption performance. If the guide holes 214 structure is not provided, the absorption efficiency of the absorbent core may be low, and the liquid accumulated in the surface layer 1 may be easily leaked. To improve the absorption efficiency, the present application provides guide holes 214 on the weakly affinity layer. The diameter of the guide holes 214 is very small and will not affect the water-locking function of the absorbent core.

[0064] Example 3

[0065] This embodiment also provides an absorbent product. The difference between this embodiment and the first embodiment is that the structure of the absorbent core is different. The other structures are exactly the same as those of the first embodiment and will not be repeated here.

[0066] refer to Figure 4 The absorbent core of this embodiment includes a composite layer 24 and a diffusion layer 23. The composite layer 24 is located on a side adjacent to the guide layer 5, and the diffusion layer 23 is arranged below the composite layer 24, that is, on a side adjacent to the bottom film layer 3.

[0067] In one embodiment of the present disclosure, the composite layer 24 may be a composite core material formed by a composite of multiple layers of materials, with a grammage of 120 gsm or more. Specifically, the composite layer 24 may include an upper layer of dust-free paper, a middle SAP material, and a lower layer of dust-free paper; or, the composite layer 24 may include an upper layer of wet-strength paper, an upper-middle SAP material, a lower-middle fluff pulp layer, and a lower layer of dust-free paper; or, the composite layer 24 may include an upper layer of dust-free paper, an upper-middle SAP material, and a lower-middle meltblown non-woven fabric layer. The composite layer 24 may also have other composite structures, which are not specifically limited in the present disclosure. The composite layer 24 may absorb liquid, and a large amount of liquid can be stored in the composite layer 24.

[0068] A diffusion layer 23 is provided below the composite layer 24. The diffusion layer 23 is constructed of a meltblown material with strong hydrophilic properties. The fluidity of the liquid in the diffusion layer 23 is greater than its fluidity in the composite layer 24. The liquid flowing downward from the composite layer 24 to the diffusion layer 23 can diffuse quickly, so that the liquid is fully and evenly absorbed. The diffused liquid is not easy to reversely seep upward, thereby keeping the surface layer 1 dry. For the entire absorbent core, the liquid diffusion area of ​​the composite layer 24 is small, and the liquid diffusion area of ​​the diffusion layer 23 is large, thereby forming a single-point infiltration effect, and the liquid can be unidirectionally guided to the lower layer in the absorbent core.

[0069] The present invention forms an absorption gradient within the absorbent core by providing a composite layer 24 with poor diffusivity on the side of the absorbent core close to the surface layer 1, and a diffusion layer 23 with strong diffusivity on the side of the absorbent core close to the base film layer 3. This allows liquid to diffuse rapidly after being absorbed into the absorbent core without back-osmosis upward, thereby improving the dryness of the absorbent product's surface and enhancing the user experience.

[0070] Comparative Example

[0071] 1. Test materials:

[0072] Test group: absorbent article provided in Example 1.

[0073] Control group: an absorbent product, the core of which is a common core made of fluff pulp, and the other structures of the absorbent product are exactly the same as those in Example 1.

[0074] 2. Weight comparison test

[0075] The absorbent products in the test group and the control group were weighed using an electronic balance. The weighing results are as follows:

[0076] The absorbent articles in the test group had a grammage of 145 gsm;

[0077] The absorbent article of the control group had a grammage of 155 gsm.

[0078] As can be seen, the absorbent product provided by the present application reduces the overall weight of the absorbent core by providing a relatively light and thin three-layer structure, thereby reducing the weight of the absorbent product. Compared with traditional absorbent products, the absorbent product provided by the present application is lighter and thinner, improving the user experience.

[0079] 3. Diffusion comparison test

[0080] Test method: Pour equal amounts of pure water or synthetic standard liquid on the absorbent products in the test group and the control group, and measure the liquid diffusion length on the two absorbent products after the liquid is completely absorbed.

[0081] The test specifically includes three groups: pouring 10 ml of pure water, pouring 5 ml of synthetic standard solution, and pouring 15 ml of synthetic standard solution. Each group of experiments should be carried out at least three times, and the average value of the diffusion length results of multiple measurements is taken. The test results are shown in Table 1:

[0082] Table 1: Diffusion length comparison test results

[0083]

[0084] As shown in Table 1, the liquid in the control group's absorbent article was less diffusive than that in the test group, and the liquid diffused more easily in the test group's absorbent article. Furthermore, when measuring the diffusion length, the experimenters touched the surface layers of the absorbent articles in both the test and control groups. The surface layers of the test group's absorbent article were dry, while the surface layers of the control group's absorbent article had a noticeably wet feel. This demonstrates that the absorbent article provided by this application has strong diffusivity. By providing an absorbent core with an absorption gradient, liquid can diffuse rapidly after absorption, preventing upward osmosis. This allows the surface of the absorbent article to remain dry, improving the user experience.

[0085] The embodiments of the present disclosure have been described above. The above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terms used herein are selected to best explain the principles of the embodiments, their practical applications, or technical improvements in the marketplace, or to enable other persons skilled in the art to understand the embodiments disclosed herein. The scope of the present disclosure is defined by the appended claims.

Claims

1. An absorbent product, characterized in that include: A surface layer (1) is provided on a side close to the human body; A guide layer (5) is provided below the surface layer (1); A bottom film layer (3) is arranged on a side away from the human body and is configured to be located below the guide layer (5); An absorption core, the absorption core being arranged between the guide layer (5) and the bottom film layer (3); the absorption core being constructed by combining a weak affinity layer, an absorption layer and a diffusion layer (23); Wherein, the absorption layer is arranged below the weak affinity layer; the absorption layer comprises an absorption material (22); The diffusion layer (23) is arranged below the absorption layer and is constructed of a melt-blown material; the hydrophilicity of the diffusion layer (23) is higher than that of the weakly hydrophilic layer; and the fluidity of the liquid in the diffusion layer (23) is at least greater than its fluidity in the weakly hydrophilic layer.

2. The absorbent article according to claim 1, wherein The weak affinity layer is a meltblown nonwoven fabric (211); the meltblown nonwoven fabric (211) has a water absorption rate of 5-15 and a gram weight of 15-80 gsm.

3. The absorbent article according to claim 1, wherein The weakly hydrophilic layer comprises a water-repellent spunbond non-woven fabric (212) and a hydrophilic spunbond non-woven fabric (213); the water-repellent spunbond non-woven fabric (212) is arranged above the hydrophilic spunbond non-woven fabric (213).

4. The absorbent article according to claim 3, wherein A plurality of flow guide holes (214) are provided on the weakly hydrophilic layer, and the flow guide holes (214) are configured to penetrate the water-repellent spunbond non-woven fabric (212) and the hydrophilic spunbond non-woven fabric (213).

5. The absorbent article according to claim 1, wherein The absorbent material (22) is at least one of a high molecular weight water-absorbing resin or a super absorbent fiber; and the gram weight of the absorbent material (22) is higher than 10 gsm.

6. The absorbent article according to claim 1, wherein The diffusion layer (23) has a water absorption ratio of 5-20 and a gram weight of 15-250 gsm.

7. The absorbent article according to claim 6, wherein The diffusion layer (23) has a water absorption ratio of 8-15 and a gram weight of 60-300 gsm.

8. The absorbent article according to claim 1, wherein It also includes an edge protection layer (4), wherein the side of the edge protection layer (4) adjacent to the absorbent core is constructed to cover the side of the surface layer (1), and the side away from the absorbent core is constructed to be composited above the bottom film layer (3).

9. The absorbent article according to claim 1, wherein The surface layer (1) and / or the absorption core contain one of tea polyphenols, tea tree essential oil, bamboo charcoal fiber, plant tannin, grapefruit extract, apigenin, aloe vera, chitosan, chamomile, quaternary ammonium salt, graphene, activated carbon, probiotics, Cnidium monnieri, Portulaca oleracea, Prinus prisma, Sophora flavescens, dipotassium glycyrrhizate, Centella asiatica, Gentiana scabra, Artemisia argyi, sodium hyaluronate, ceramide, and Scutellaria baicalensis.

10. The absorbent article according to claim 1, wherein The absorbent core has a grammage of 100-450 gsm.

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