Slotted absorption article with diffusion nodes in multi-stage arrangement

Abstract

The invention relates to the technical field of baby diapers, in particular to a diffusion node multi-stage arranged slotted absorption article which comprises a surface layer, a core body and a bottom layer which are sequentially compounded into a whole, the core body is at least composed of wrapping cloth and an absorption body wrapped by the wrapping cloth, the core body is provided with a flow guide groove in the length direction of the core body, and the flow guide groove is communicated with the bottom layer. A liquid storage diffusion groove is further formed in the position, close to the end of the flow guide groove or located at the end of the flow guide groove, of each flow guide groove in an expanded mode. According to the invention, the flow guide grooves with the liquid storage diffusion groove structures are formed, so that the absorption area of the core body in the middle area is increased, the absorption speed is increased, the flow guide grooves and the liquid storage diffusion grooves play a temporary buffering role when facing large flow, enough time is gained for liquid absorption of the core body, the absorption utilization rate of the core body is increased, and the service life of the core body is prolonged. The contact time and area of the skin and excrement of a user are reduced, and the user can feel dry and comfortable in the using process.

Description

Technical Field

[0001] The invention relates to the technical field of baby diapers, and in particular to a grooved absorbent product with multi-level arrangement of diffusion nodes. Background Art

[0002] The surface layer of existing absorbent products is generally made of non-woven fabrics, chemical fibers and other non-natural materials, and most of them are not pure cotton surface layers. If such materials are not processed properly, the surface touch is relatively poor. In addition, in order to improve the strength of the absorbent product structure and make it less likely to be torn, higher density materials are generally used to improve the structural strength and surface fineness.

[0003] However, if the high-density surface layer is not properly treated, its surface penetration capacity is relatively insufficient. Specifically, the amount of liquid excreted by the user suddenly increases, resulting in the surface layer diversion speed not being able to keep up with the liquid outflow speed. The core below has no time to absorb the liquid, and the liquid will diffuse laterally along the surface of the surface layer. If the leak-proof partition does not have a reasonable structure at this time, the liquid will obviously cause side leakage problems, causing great inconvenience to the user.

[0004] Based on the above situation, some new products choose to groove the surface of the core from the perspective of increasing the temporary storage performance of the core liquid, so that the core has a certain physical space as a space to limit the lateral diffusion of the liquid, prolong the residence time of the liquid in the core, and then cooperate with a surface layer with good conductivity to minimize the side leakage caused by untimely absorption. However, the existing core groove method often sets one or more straight grooves in the middle. If the liquid continues to penetrate at both ends of the groove extension direction, the liquid flow will not slow down in the state of lying down, affecting the absorption speed of the core. If it cannot be absorbed by the core in time, the problem of exudation will still occur, resulting in leakage from the front and back. Summary of the invention

[0005] In view of the technical defects existing in the background technology, the present invention proposes a slotted absorbent product with multi-level arrangement of diffusion nodes, which solves the above technical problems and meets the actual needs. The specific technical solution is as follows: A slotted absorbent product with a multi-level arrangement of diffusion nodes comprises a surface layer, a core body and a bottom layer which are sequentially composited into an integral whole, wherein the core body is composed of at least a covering cloth and an absorbent body wrapped in the covering cloth, and the core body is provided with one or more guide grooves along the length direction of the core body, and each guide groove is further expanded to provide a total of at least two liquid storage diffusion grooves near its end and / or at its end.

[0006] Preferably, the covering cloth comprises a lower covering cloth wrapped from bottom to top on the bottom and both sides in the width direction of the absorbent body and an upper covering cloth covering the top of the absorbent body, and the upper covering cloth is attached to the inner walls of the guide groove and the liquid storage diffusion groove.

[0007] Preferably, the surface layer covers the top of the upper covering cloth and is compounded with the upper covering cloth only at the guide groove and the liquid storage diffusion groove.

[0008] Preferably, an ADL layer and / or a second absorbent body is compounded between the surface layer and the upper covering cloth.

[0009] Preferably, the liquid storage diffusion groove is any one of quadrilateral, circular, elliptical, triangular, V-shaped or a combination of several thereof; the cross section of the liquid storage diffusion groove is rectangular or trapezoidal, and the width of the liquid storage diffusion groove is 6mm-30mm.

[0010] Preferably, the guide groove is expanded to form a liquid storage diffusion groove between the liquid storage diffusion grooves at both ends, and the distances between the liquid storage diffusion grooves at both ends and the liquid storage diffusion grooves at both ends are different.

[0011] Preferably, at least one end of the guide groove extends to the end of the core in the length direction, the cross-section of the guide groove is rectangular or trapezoidal, and the width of the guide groove is 2 mm-20 mm.

[0012] The present invention increases the absorption area of ​​the core in the middle area and improves the absorption speed by providing a guide groove with a liquid storage diffusion groove structure having two or more nodes. When facing a large flow rate, the liquid storage diffusion grooves at each point play a temporary buffering role, especially changing the unidirectional flow of liquid into a four-way diffusion trend, which significantly reduces the liquid storage in a unit area, buys enough time for the core to absorb liquid, improves the absorption utilization rate of the core, and forms a multi-level arrangement trend.

[0013] And because the guide groove covers both ends of the core, the liquid can also be fully absorbed in this area, and the leakage from the front and back is also significantly alleviated. The time and area of ​​contact between the user's skin and excrement are reduced, and the user can feel dry and comfortable during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the cross-sectional structure of the present invention.

[0015] Figure 2 It is a schematic diagram of the top structure of the present invention.

[0016] Figure 3 It is a schematic cross-sectional structural diagram of embodiment A of the present invention.

[0017] Figure 4 It is a schematic cross-sectional structural diagram of embodiment B of the present invention.

[0018] Figure 5 It is a schematic cross-sectional structural diagram of Example C of the present invention.

[0019] Figure 6 It is a schematic cross-sectional structural diagram of embodiment D of the present invention.

[0020] Figure 7 Schematic diagram of the shape type of the liquid storage diffusion tank.

[0021] Figure 8 A is a schematic diagram of an extended form of the guide groove.

[0022] Fig. 9 FIG. 4 is a schematic diagram B of an extended form of the guide groove.

[0023] Fig.10 Schematic diagram C of the extended form of the guide groove.

[0024] Fig.11 FIG. 4 is a schematic diagram D of an extended form of the guide groove.

[0025] Fig.12 It is a schematic diagram of the morphology of multiple groups of guide grooves and liquid storage diffusion grooves.

[0026] Fig.13 It is a schematic diagram of the groove cross-section shape type of the guide groove / liquid storage diffusion groove.

[0027] in: 1- surface layer 1; 2-core; 20-covering cloth; 20A-lower covering cloth; 20B-upper covering cloth; 21-absorbent body; 22-ADL layer; 23-second absorbent body; 3- bottom layer; 4- diversion trough; 5-liquid storage diffusion tank; 6-PE film layer. DETAILED DESCRIPTION

[0028] The implementation modes of the present invention are described below in conjunction with the accompanying drawings and relevant embodiments. The implementation modes of the present invention are not limited to the following embodiments, and the present invention relates to relevant necessary components in the technical field, which should be regarded as the known technology in the technical field and can be known and mastered by the technical personnel in the technical field.

[0029] Combination Figures 1 to 13 As shown, the present invention discloses a slotted absorbent product with a multi-level arrangement of diffusion nodes, including a surface layer 1, a core 2 and a bottom layer 3 which are sequentially composited into an integral body, the core 2 is composed of at least a covering cloth 20 and an absorbent body 21 wrapped by the covering cloth 20, the core 2 is provided with one or more guide grooves 4 along the length direction of the core, and each guide groove 4 is further expanded to provide a total of at least two liquid storage diffusion grooves 5 near its end and / or at its end.

[0030] As a supplementary explanation, the slotted absorbent product described in the present invention can usually also add a PE film layer 6 between the core 2 and the bottom layer 3 to further prevent leakage and provide a certain degree of breathability as an auxiliary layer structure for optimizing the leakage-proof performance of the absorbent product. The structure of the present invention is used in wearable absorbent products such as diapers, pull-on pants, sanitary napkins, etc., and when used in the above-mentioned different types of absorbent products, the slotted absorbent product described in the present invention will also be adaptively provided with structures such as front and rear waist stickers, elastic waistbands or side wings, anti-side leakage partitions, etc., so as to adaptively configure them based on the principle of satisfying the functions of the absorbent product, and will not affect the absorbent product described in the present invention in correctly performing the basic functions of the guide groove 4 and the liquid storage diffusion groove 5 when used.

[0031] In addition, the shape of the core 2 can also be freely selected based on the differences in specific product types, such as straight strips, 8-shaped, gourd-shaped or wedge-shaped, without affecting the main technical solution of the present invention. This is directly related to the main technical solution of the present invention that acts on the absorbent body 21 in the main functional area of ​​the core 2 rather than the external covering cloth 20.

[0032] Specific combination Figure 1 and Figure 2 As shown, when the present invention is in use, when the human body discharges urine onto the absorbent article, the liquid will pass through the surface layer 1 to reach the core 2 below. Under the guidance of the guide groove 4, the liquid will penetrate the side wall of the guide groove 4 while flowing along the length direction of the guide groove 4, thereby accelerating the penetration speed of the liquid on the core 2. When the liquid is drained to the end of the guide groove 4, it will be gathered at the end of the guide groove 4. Since the guide groove 4 has a certain liquid storage capacity, the liquid will also penetrate toward the cores 2 on both sides during the process of flowing to the end of the guide groove 4. When the liquid reaches the end of the guide groove 4, the total amount is much less than when it just contacts the core 2, so that the accumulation of liquid at the end of the guide groove 4 is significantly suppressed, and the side leakage of liquid is also controlled.

[0033] At the same time, because the absorbent product will be in a bent state when in use, unless the liquid is extremely large and causes a surge, it will eventually converge toward the middle area of ​​the core 2 along the arc-shaped guide groove 4 or the surface of the core 2. In other words, regardless of whether there are signs of front and back leakage, under the storage and buffering effect of the guide groove 4, the liquid can hardly penetrate to the two ends of the core, thereby avoiding the occurrence of front and back leakage.

[0034] More importantly, combined with Figure 2 , Figures 7 to 12As shown, the guide groove 4 forming a dispersed node of the present invention is also provided with a liquid storage diffusion groove 5 near its own end or at the end. The liquid storage diffusion groove 5 is an auxiliary liquid caching space structure with a relatively open local area formed by further expanding the groove width and depth of the original guide groove 4 in the width or length direction of the core 2. From the morphological point of view, the liquid storage diffusion groove 5 is not limited to a single form, but must meet the basic requirement that the width W2 of the liquid storage diffusion groove 5 is greater than the width W1 of the guide groove 4. In the present invention, the width ratio of the liquid storage diffusion groove 5 to the guide groove 4 floats in the range of 3:1~3:2, avoiding the area of ​​the guide groove 4 and the liquid storage diffusion groove 5 being too large to reduce the total amount of the absorbent body 21 in disguise and prevent the effective absorption area from becoming smaller. Furthermore, the absorbent body 21 is composed of a material with absorption performance, and its type is single or composite, including but not limited to SAP, fluff pulp, water-absorbent fiber and other materials.

[0035] When the liquid flows along the guide groove 4, there is less obstruction from the surface layer 1 or the covering cloth 20 material. However, when it flows to the liquid storage diffusion groove 5 at the dispersion node, the flow rate of the liquid will be significantly reduced due to the sudden increase in width. The potential energy of the flow will be released by the liquid storage diffusion groove 5, and then the liquid will penetrate along the surface plane direction of the core 2 at the position of the liquid storage diffusion groove 5. The setting of the liquid storage diffusion groove 5 of the present invention helps to improve the diversion and side leakage prevention / front and rear leakage prevention performance of the core 2.

[0036] More specifically, when the liquid flows from the longitudinally uniform guide groove 4 to the liquid storage diffusion grooves 5, the liquid that originally tended to flow in one direction suddenly has no restrictions on both sides, so that the potential energy originally stored in the liquid is released, and the liquid in the area suddenly diffuses in four directions, so that the liquid inventory in the unit area is significantly reduced, and the buffering effect of the multi-level groove body is more obvious. This is a significant difference compared to the existing guide groove products. As a preferred embodiment, the liquid storage diffusion groove 5 has three node positions on one groove according to the physiological characteristics of the human body, so that the liquid output at each position can be buffered in time. The existing straight groove guide groove products do not have this specific storage diffusion groove structure at the corresponding position, so the effect is naturally slightly inferior.

[0037] Furthermore, the number of the guide grooves 4 and the liquid storage diffusion grooves 5 of the present invention is not unique. Fig.12As shown, as needed, 1, 2, 3 or more guide grooves 4 and attached liquid storage and diffusion grooves 5 can be opened on the surface of the core 2 to form a buffer structure with more levels. For users with larger liquid flow rates, a larger number of guide grooves 4 and liquid storage and diffusion grooves 5 can multiply the liquid diversion, storage and caching performance of the core 2. When excretion occurs, although the overall absorption capacity of the product for such users is slightly lower than that of products with fewer grooves, the performance of preventing side leakage / front and rear leakage per unit time is improved. Technical personnel in this field can select an appropriate combination of grooves in appropriate products based on specific user needs.

[0038] Combination Figure 3 As shown, as a preferred embodiment A of the present invention, the covering cloth 20 includes a lower covering cloth 20A wrapped from bottom to top on the bottom and both sides in the width direction of the absorbent body 21, and an upper covering cloth 20B covering the top of the absorbent body 21, and the upper covering cloth 20B is attached to the inner walls of the guide groove 4 and the liquid storage diffusion groove 5. In this structure, the absorbent body 21 in the core body 2 is wrapped by a complete covering cloth 20 structure, including an upper covering cloth 20B and a lower covering cloth 20A, wherein the upper covering cloth 20B is tightly attached to the groove-shaped inner walls of the guide groove 4 and the liquid storage diffusion groove 5. Since the material of the covering cloth is usually also composed of a fabric with good conduction performance, the liquid can be diverted and penetrated immediately after contacting the upper covering cloth 20B, and the absorbent body 21 also obtains a faster response time.

[0039] Combination Figure 4 As shown, as a preferred embodiment B of the present invention, the surface layer 1 covers the top of the upper covering cloth 20B, and is compounded with the upper covering cloth 20B only at the guide groove 4 and the liquid storage diffusion groove 5. The surface layer 1 in this form is more inclined to a product structure that focuses on a light, thin and fluffy experience. This surface layer 1 has more breathable space. When the liquid passes through the surface layer 1 and contacts the core body 1 below, due to the rapid guidance and caching of the guide groove 4 and the liquid storage diffusion groove 5 of the present invention, the position of the surface layer 1 on both sides of the groove structure is more easily separated from the influence of the liquid, and this part of the space provides assistance for ventilation and also becomes a channel for assisting liquid infiltration.

[0040] Preferably, combined Figure 5 In the preferred embodiment C shown in the figure, an ADL layer 22 is further provided between the surface layer 1 and the upper covering cloth 20B. Figure 6The preferred embodiment D shown is, and / or is also provided with a second absorbent body 23. The addition of the former can further improve the penetration ability of the liquid, so that the surface layer 1 can better maintain a dry touch. With the help of the ADL layer 22, the liquid will contact the groove structure on the surface of the core body 2 more quickly, and through the good flow guidance, storage, caching, and lateral diffusion and penetration of the groove structure, the absorbent product can obtain a fast absorption effect. The second absorbent body 23 can be set with reference to the material of the absorbent body 21, or a single material with a relatively simple structure can be used as an auxiliary absorption structure to increase the overall liquid absorption capacity of the absorbent product, and can absorb part of the liquid in a targeted manner to improve the liquid retention performance.

[0041] Combination Figure 2 and Figure 7 As shown, the shape of the liquid storage diffusion tank 5 of the present invention is not limited to a single type as described above. Figure 2 The liquid storage diffusion tank 5 shown is a quadrilateral. Figure 7 The liquid storage diffusion tank 5 shown in a is circular or elliptical. Figure 7 The liquid storage diffusion tank 5 shown in b is triangular. Figure 7 The liquid storage diffusion tank 5 shown in c is V-shaped. Further, the tank shape of the liquid storage diffusion tank 5 can be any one or a combination of several thereof, such as Figure 7 In b, a triangle and a quadrilateral appear at the same time; in the above shapes, since the liquid storage diffusion grooves 5 are all beyond the area of ​​the core body 2, the integrity and closure of the entire guide groove 4 structure are guaranteed.

[0042] Further, combined with Fig.13 As shown, the cross section of the liquid storage diffusion groove 5 is rectangular or trapezoidal. When the shape of the liquid storage diffusion groove 5 is trapezoidal, it can be used in one of the two forms of isosceles regular trapezoid and isosceles inverted trapezoid. In the case of a rectangle, the penetration rate of the liquid should be basically the same at each thickness position of the core 2. However, if an isosceles regular trapezoid is selected, the liquid is more likely to be firstly buffered and stored in the liquid storage diffusion groove 5 before being absorbed. At this time, although the liquid is not absorbed in the core 2 in time, it is also separated from the surface layer 1 structure in time, so the surface dryness performance of the absorbent article is improved. Preferably; on the contrary, if an isosceles inverted trapezoidal shape is adopted, since the liquid will contact the side wall of the groove faster when penetrating vertically, the core 2 will absorb the liquid earlier, which is equivalent to increasing the absorption speed of the core 2. For users, the absorbent product will show stronger absorption performance rather than storage performance; further, the width of the liquid storage diffusion groove 5 is 6mm-30mm, and the width is adaptively adjusted according to the size specifications of the absorbent product and the user group. The width required by infant users is lower, while the width required by adult users is higher.

[0043] Combination Figure 2 , Figures 7 to 12 As shown, as a more preferred implementation of the multi-stage structure of the liquid storage diffusion slot 5, the guide slot 4 is further expanded to form a liquid storage diffusion slot 5 between the liquid storage diffusion slots 5 at both ends, and the liquid storage diffusion slots 5 between the liquid storage diffusion slots 5 at both ends are at different distances from the liquid storage diffusion slots 5 at both ends. Specifically, the absorbent product is distinguished between the positive and negative directions when in use, and the core 2 portion of the guide slot 4 where the distance between the end liquid storage diffusion slot 5 and the middle liquid storage diffusion slot 5 is shorter is the positive direction of the absorbent product. The liquid storage diffusion groove 5 at the front (positive) end position can be regarded as the enhanced diffusion zone 1, which covers the urine point position of baby boys and adult men, and can diffuse and absorb the liquid as soon as the urine is excreted. At the same time, especially when the baby boy is in a prone sleeping position, it provides a temporary storage space for urine to reduce the risk of urine leakage in front; the liquid storage diffusion groove 5 located in the middle can be regarded as the enhanced diffusion zone 2, which is the urine point position of baby girls or adult women. Combined with the above-mentioned principles, this area can also solve the problem of large liquid discharge in the local area of ​​the user; the liquid storage diffusion groove 5 at the rear (reverse) end position can be regarded as the enhanced diffusion zone 3, which is the concentrated absorption area for excretion in the user's anal area, and is also the position where liquid gathers when the user lies on his back. The liquid storage diffusion groove 5 is set in this area, which can have a better anti-back leakage effect and provide a temporary storage space for urine.

[0044] like Figure 3 As shown, diaper rash of infants and young children often occurs in the area near and between the two excretion ports. Therefore, when the liquid storage and diffusion grooves 5 are arranged at intervals, the distance L1 is smaller than the distance L2. From another perspective, it can also be regarded that the number of enhanced diffusion areas within the L1 range is greater than that within the L2 range, so as to reduce the contact area between the user's skin and excrement and moisture in the L1 area, increase the air circulation space, improve dryness, and reduce the probability of diaper rash; hot melt adhesive is applied to the upper covering layer 20B (non-woven fabric or toilet paper) and the lower covering layer 20A (non-woven fabric or toilet paper) at the position of the guide groove 4 and the liquid storage and diffusion groove 5, so that the two are bonded together in the space without absorbent material, and then a secondary reinforcement is performed by pressurization, heat pressing or ultrasonic means through an additional pressure roller device, so that the shape and diversion ability of the guide groove can be continuously maintained during the long-term use of urine immersion, so that it can continue to work.

[0045] The surface layer 1 can also be applied with hot melt adhesive through the same process, and then reinforced for a second time by pressurization, heat pressing or ultrasound through an additional roller device, combined with the core 2, and maintain the same shape as the guide groove 4 and the liquid storage diffusion groove 5 to maintain the performance and experience of the final product.

[0046] Combination Figures 8 to 11 As shown, preferably, at least one end of the guide groove 4 extends to the end of the core 2 in the length direction, such as Figure 8As shown, the guide groove 4 extends a distance beyond the liquid storage diffusion groove 5 at the reverse end of the absorbent article. At the same time, the extension direction can also be the direction of the liquid storage diffusion groove 5 at the forward end. Fig.10 The positive and negative ends are extended by one end. The guide groove 4 and the liquid storage diffusion groove 5 in the above embodiment are both in the area of ​​the core 2, which is a closed structure. The absorption and guide effect is the most ideal; and Fig. 9 and Fig.11 As shown, the guide groove 4 extends to the end of the length direction of the core 2, so that the guide groove 4 and the liquid storage diffusion groove 5 form a semi-open state compared to the core 2. However, at this time, due to the binding effect of the lower covering layer 20A and the upper covering layer 20B, the core can still ensure the integrity of the structure. For occasions where the amount of absorbent body 21 needs to be saved, as long as the designed absorption amount can meet the usage needs of the target users, the occurrence of front and rear leakage can also be avoided, and the liquid will be completely absorbed by the core 2 before flowing out of the core 1 area.

[0047] Further, combined with Fig.13 As shown, with reference to the aforementioned embodiments of the liquid storage diffusion groove 5, the cross-section of the guide groove 4 can also be rectangular or trapezoidal. In the case of a trapezoid, it can also be a positive isosceles trapezoid or a negative isosceles trapezoid. The effect obtained is similar to that of the liquid storage diffusion groove 5, so the effects are not repeated here. Similarly, based on the proportional relationship between the widths of the guide groove 4 and the liquid storage diffusion groove 5, the width of the guide groove 4 ranges from 2mm to 20mm. For the same reason, the width can also be adaptively adjusted according to the size specifications of the absorbent product and the user group.

[0048] In general, the guide groove with a plurality of liquid storage diffusion groove structures provided in the present invention increases the absorption area of ​​the core in the middle area, improves the absorption speed, can play a temporary buffering role when facing a large flow rate, buys enough time for the core to absorb liquid, and significantly improves the absorption utilization rate of the core.

[0049] Moreover, since the effective area of ​​the guide groove covers both ends of the core, the liquid at both ends can also be fully absorbed, which makes the leakage of the absorbent product from the front and back significantly alleviated and controlled, and the contact time and area between the user's skin and excrement are reduced, making the user feel drier and more comfortable during use. Especially for infants and young children, the good wearing experience brought by the above functions can reduce the probability of diaper rash, skin allergies, eczema, etc. encountered in infant care, and reduce the various costs of infant care.

[0050] The above is only a preferred embodiment of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A slotted absorbent article with a multi-level arrangement of diffusion nodes, comprising a surface layer, a core body and a bottom layer which are sequentially composited to form an integral body, wherein the core body is composed of at least a covering cloth and an absorbent body wrapped therein by the covering cloth, characterized in that: The core body is provided with guide grooves along the length direction of the core body, and each guide groove is further expanded to provide at least two liquid storage diffusion grooves at a position close to its end and / or located at its end.

2. The grooved absorbent article with multi-level diffusion nodes according to claim 1, characterized in that: The covering cloth comprises a lower covering cloth wrapped from bottom to top on the bottom and both sides in the width direction of the absorbent body and an upper covering cloth covering the top of the absorbent body, and the upper covering cloth is attached to the inner walls of the guide groove and the liquid storage diffusion groove.

3. The grooved absorbent article with multi-level diffusion nodes as claimed in claim 2, characterized in that: The surface layer covers the top of the upper covering cloth and is compounded with the upper covering cloth only at the guide groove and the liquid storage diffusion groove.

4. The grooved absorbent article with multi-level diffusion nodes according to claim 2, characterized in that: An ADL layer and / or a second absorbent body are also compounded between the surface layer and the upper covering cloth.

5. The grooved absorbent article with multi-level diffusion nodes according to claim 1, characterized in that: The liquid storage diffusion groove is any one of quadrilateral, circular, elliptical, triangular, and V-shaped or a combination of several of them; the cross section of the liquid storage diffusion groove is rectangular or trapezoidal, and the width of the liquid storage diffusion groove is 6mm-30mm.

6. The grooved absorbent article with multi-level diffusion nodes according to claim 1, characterized in that: The guide groove is further expanded to form a liquid storage diffusion groove between the liquid storage diffusion grooves at both ends, and the distances between the liquid storage diffusion grooves at both ends and the liquid storage diffusion grooves at both ends are different.

7. The grooved absorbent article with multi-level diffusion nodes according to claim 1, characterized in that: At least one end of the guide groove extends to the end of the core body in the length direction, the cross section of the guide groove is rectangular or trapezoidal, and the width of the guide groove is 2mm-20mm.

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