Coated leakage-proof absorption core body

Abstract

The utility model relates to the technical field of absorption products, and discloses a coated leakproof absorption core body, which comprises a liquid guide layer, two absorption layers, a permeation layer and a liquid pulling diffusion layer, and is characterized in that the liquid guide layer wraps the absorption layer and the permeation layer, the number of the absorption layers is two, the absorption layers are respectively arranged on two opposite sides of the permeation layer, and the liquid pulling diffusion layer is arranged between the two absorption layers. An opening is formed in the surface of one side of the liquid guide layer, and the opening of the liquid guide layer is connected with one of the absorption layers; the liquid guide layer is adopted to wrap the absorption layer, the permeation layer and the liquid pulling diffusion layer, the two ends of the liquid guide layer and the liquid pulling diffusion layer are connected in a closed mode through the discontinuous dispensing layers, use of materials can be effectively reduced, water absorption objects are prevented from being exposed, meanwhile, the permeation layer is provided with a plurality of breathable protruding points, and therefore the water absorption effect is improved. Therefore, the air permeability is enhanced under the condition of absorption.

Description

Technical Field

[0001] The utility model relates to the technical field of absorbent products, in particular to a coated leak-proof absorbent core. Background Art

[0002] The absorbent core is an indispensable technical component of a disposable absorbent product. In the past, the core was a composite core, in which a layer of spunbond cloth was used to wrap and place the polymer on the outside, and the spunbond cloth used for wrapping was fully coated on the top and bottom with a glue application process. This technology affects the absorption of the absorbent core and its breathability after washing hands.

[0003] Publication number CN218305334U is a Chinese utility model patent, which discloses a diaper with a breathable and leak-proof bottom layer, including a surface layer, a guide layer, a core body and a bottom layer that are tightly connected in sequence from the inner side close to the user's skin to the outside, and a breathable layer is arranged between the core body and the bottom layer. The breathable layer includes an upper layer formed by wrapping a water-absorbent inner core in a folded spunbond meltblown fabric arranged close to the surface layer, and a lower layer formed by a hydrophilic layer and a water-repellent layer arranged close to the bottom layer. The utility model avoids the use of PE film, so that the air permeability of the bottom area is not affected. At the same time, the breathable layer structure is arranged in a way of alternating and compounding multiple layers of water-absorbent and water-repellent materials, and the anti-leakage performance is also guaranteed, thereby improving the wearing comfort and reliability of the diaper.

[0004] Combined with the above structure, the above structure reduces the use of PE film and can enhance the air permeability of the core. The air-permeable layer structure adopts a multi-layer water-absorbing and water-repellent material alternating composite method to achieve the effect of multiple water absorption. However, after the air-permeable layer absorbs water, due to the sealing setting, after absorbing water, the core expands, causing the liquid absorption channel to be blocked and leaking, and the structure consumes a lot of materials in the combination structure of the materials. Therefore, it is necessary to develop a side leakage-proof core that can also provide good air permeability after absorbing water and can also reduce the absorption of the material. Utility Model Content

[0005] In view of the technical defects existing in the background technology, the utility model proposes a coated leak-proof absorbent core, which solves the above technical problems and meets the actual needs. The specific technical solution is as follows:

[0006] A coated leak-proof absorbent core comprises: a liquid conducting layer, an absorption layer, a permeable layer and a liquid pulling and diffusion layer, wherein the liquid conducting layer wraps the absorption layer and the permeable layer, the absorption layer is provided with two layers, and the absorption layers are respectively provided on two opposite sides of the permeable layer, an opening is provided on the surface of one side of the liquid conducting layer, and the opening of the liquid conducting layer is connected to one of the absorption layers; an intermittent glue layer is provided between the liquid conducting layer and the surface of one of the absorption layers; a plurality of water-absorbing materials are interspersed in each layer of the absorption layer; a plurality of breathable convex points are provided on a surface of the permeable layer adjacent to the two absorption layers; a sealing edge is provided at the front and rear ends of the liquid conducting layer, the absorption layer, the permeable layer and the liquid pulling and diffusion layer respectively.

[0007] As a further technical solution of the utility model, the liquid conducting layer wraps the absorption layer and the permeation layer, and the two ends extend to the outside of the liquid pulling diffusion layer respectively, and the two ends of the liquid conducting layer are respectively bent and wrapped to the lower surface of the liquid pulling diffusion layer; the inner surface of the liquid conducting layer is connected to one of the two absorption layers; the liquid conducting layer is made of one of wood pulp dust-free paper, viscose polyester spunlace cloth, viscose wood pulp spunlace cloth and polyester wood pulp spunlace cloth.

[0008] As a further technical solution of the utility model, each of the absorbent layers is hollow, and each of the absorbents is arranged in a straight line in the lateral direction of the absorbent layer; both ends of each of the absorbents are fixedly connected to each corresponding edge sealing; each of the absorbents is made of a polymer absorbent resin.

[0009] As a further technical solution of the utility model, the edges of both sides of the permeable layer are respectively fixed in the liquid-conducting layer, and are on two opposite sides.

[0010] As a further technical solution of the utility model, one side surface of the liquid-drawing diffusion layer is in contact with the other absorption layer; the other surface of the liquid-drawing diffusion layer is connected to the two ends of the liquid-conducting layer, and the plurality of discontinuous glue layers arranged between the surface of the liquid-drawing diffusion layer and the liquid-conducting layer are arranged in sequence and in a straight line along the extension direction of the liquid-drawing diffusion layer and the liquid-conducting layer. The edge sealing structure of the liquid-conducting layer, the absorption layer, the permeation layer and the front and rear ends of the liquid-drawing diffusion layer is any one of hot pressing sealing, ultrasonic sealing and adhesive sealing.

[0011] The beneficial effects of the utility model are:

[0012] The liquid conducting layer is used to wrap the absorption layer, the penetration layer and the liquid pulling diffusion layer, and the two ends of the liquid conducting layer are closed and connected with the liquid pulling diffusion layer by discontinuous glue layers, which can effectively reduce the use of materials and avoid the exposure of absorbent materials. At the same time, the penetration layer is provided with a number of breathable convex points, which can enhance the breathability of the utility model when absorbing.

[0013] The plurality of protrusions respectively arranged on the upper and lower sides of the permeable layer can provide sufficient expansion space for the absorbent, and the strip-shaped arrangement of the absorbent can increase the absorption speed and dryness after absorption, while also providing breathability. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of a coated leak-proof absorbent core.

[0015] Figure 2 It is a schematic diagram of a three-dimensional structure of a coated leak-proof absorbent core.

[0016] Figure 3 A schematic diagram of the arrangement of discontinuous glue-dot layers covering a leak-proof absorbent core.

[0017] Figure 4 The present invention is a schematic diagram of the combined structure of a permeable layer and breathable convex points covering a leak-proof absorbent core.

[0018] Among them: a liquid conducting layer 1, an absorption layer 2, a penetration layer 3, a liquid pulling diffusion layer 4, a discontinuous glue dot layer 5, a water absorbent 21, and breathable protrusions 31. DETAILED DESCRIPTION

[0019] The implementation methods of the present invention are described below in conjunction with the accompanying drawings and relevant embodiments. The implementation methods of the present invention are not limited to the following embodiments, and the present invention involves relevant necessary components in this technical field, which should be regarded as common knowledge in this technical field and can be known and mastered by technical personnel in this technical field.

[0020] Combination Figures 1 to 4 As shown, a coated leak-proof absorbent core comprises: a liquid conducting layer 1, an absorbent layer 2, a permeable layer 3 and a liquid pulling diffusion layer 4, wherein the liquid conducting layer 1 wraps the absorbent layer 2 and the permeable layer 3, the absorbent layer 2 is provided with two layers, and the absorbent layers 2 are respectively provided on two opposite sides of the permeable layer 3, an opening is provided on the surface of one side of the liquid conducting layer 1, and the opening of the liquid conducting layer 1 is connected to one of the absorbent layers 2; an intermittent dotted glue layer 5 is provided between the inside of the liquid conducting layer 1 and the surface of one of the absorbent layers 2; a plurality of absorbents 21 are interspersed in each layer of the absorbent layer 2; a plurality of breathable convex points 31 are provided on a surface of the permeable layer 3 adjacent to the two layers of the absorbent layers 2; a sealing edge is provided at the front and rear ends of the liquid conducting layer 1, the absorbent layer 2, the permeable layer 3 and the liquid pulling diffusion layer 4, respectively.

[0021] The liquid conducting layer 1 is used to wrap the absorption layer 2, the permeation layer 3 and the liquid pulling diffusion layer 4, and the two ends of the liquid conducting layer 1 are closed and connected with the liquid pulling diffusion layer 4 by discontinuous glue layers 5, which can effectively reduce the use of materials and avoid the exposure of the absorbent 21. At the same time, the permeation layer 3 is provided with a plurality of breathable protrusions 31, which can enhance the breathability of the utility model when absorbing.

[0022] The plurality of protrusions respectively arranged on the upper and lower sides of the permeable layer 3 can provide sufficient expansion space for the water absorbent 21, and the strip-shaped arrangement of the water absorbent 21 can increase the absorption speed and dryness after absorption, while also providing air permeability.

[0023] After adopting the above structure, it needs to be further explained that the liquid conducting layer 1 is used to wrap the absorption layer 2, the permeation layer 3 and the liquid pulling diffusion layer 4, and the two ends of the liquid conducting layer 1 are closed and connected with the liquid pulling diffusion layer 4 by discontinuous glue layers 5, which can effectively reduce the use of materials and avoid the exposure of the absorbent 21. At the same time, the permeation layer 3 is provided with a plurality of breathable protrusions 31, which can enhance the breathability of the utility model when absorbing.

[0024] The plurality of protrusions respectively arranged on the upper and lower sides of the permeable layer 3 can provide sufficient expansion space for the water absorbent 21, and the strip-shaped arrangement of the water absorbent 21 can increase the absorption speed and dryness after absorption, while also providing air permeability.

[0025] After adopting the above structure, it needs to be further explained that the absorption layer 2, the permeation layer 3 and the liquid-pulling diffusion layer 4 wrapped by the liquid-conducting layer 1 can avoid the absorption layer 2, the permeation layer 3 and the liquid-pulling diffusion layer 4 from being exposed, and the wrapping setting can also reduce the combination of multiple layers, thereby saving the use of materials.

[0026] The permeable layer 3 fixed in the liquid-conducting layer 1 has a plurality of convex points evenly arranged above and below, which are used to provide sufficient expansion space for the water absorbent 21 after absorbing water, and the strip-shaped water absorbent 21 effectively provides more all-round water absorption, while also providing water absorption speed and dryness after absorption. There are gaps between several water absorbent strips 21, so there are certain gaps in the absorption layer 2, so that the absorption layer 2 has a certain air permeability, and there is also sufficient air permeability space after the strip-shaped water absorbent 21 absorbs water.

[0027] An opening arranged on the surface of one side of the liquid-conducting layer 1 is used for contact with the human body, so the opening leaks out the liquid-drawing diffusion layer 4, and the liquid-drawing diffusion layer 4 evenly guides the water running out of the human body into the two absorption layers 2, and absorbs the water through the absorbent 21 in the two absorption layers 2, wherein the penetration layer 3 arranged between the two absorption layers 2 is used to provide the water overflowing from the first absorption layer 2 to penetrate into the next absorption layer 2, so as to avoid the water in the first absorption layer 2 from overflowing outwards and causing side leakage, and the utility model wraps the two absorption layers 2, so as to avoid the water flowing into the two absorption layers 2 from seeping outwards due to external shaking.

[0028] The liquid conducting layer 1 wraps the absorption layer 2 and the permeation layer 3, and the two ends extend to the outside of the liquid drawing diffusion layer 4 respectively, and the two ends of the liquid conducting layer 1 are respectively bent and wrapped to the lower surface of the liquid drawing diffusion layer 45; the inner surface of the liquid conducting layer 1 is connected to one of the two absorption layers 2; the liquid conducting layer 1 is made of one of wood pulp dust-free paper, viscose polyester spunlace cloth, viscose wood pulp spunlace cloth and polyester wood pulp spunlace cloth.

[0029] After adopting the above structure, it needs to be further explained that the opening provided in the liquid conducting layer 1 is used to provide liquid inflow. After the liquid conducting layer 1 wraps the absorption layer 2 and the permeation layer 3, the two ends of the liquid conducting layer 1 are pulled toward the surface of the liquid diffusion layer 4 to fit it so that an opening for introduction is left, and the absorption layer 2 and the permeation layer 3 can also be wrapped.

[0030] The liquid guide layer 1 is made of one of wood pulp dust-free paper, viscose polyester spunlace fabric, viscose wood pulp spunlace fabric and polyester wood pulp spunlace fabric, and the gram weight is 30gsm-60gsm.

[0031] Each of the absorbent layers 2 is hollow, and each of the absorbents 21 is arranged in a straight line in the transverse direction of the absorbent layer 2; both ends of each of the absorbents 21 are fixedly connected to each corresponding edge sealing; each of the absorbents 21 is made of high molecular absorbent resin.

[0032] After adopting the above structure, it needs to be further explained that the water absorbent 21 is made of a high molecular water absorbent resin with a gram weight of 50gsm-200gsm, and the gap distance between a plurality of water absorbents 21 is 15mm-30mm.

[0033] When the gap between the water absorbents 21 is less than 15 mm, water cannot penetrate into the other absorbent layer 2, resulting in water accumulation in one absorbent layer 2 and overflowing to the outside, affecting its absorption effect.

[0034] When the gap between the water absorbents 21 is greater than 30 mm, water flows in from the first water absorbent layer 2. Because the gap is too large, when the water contacts the first gap, the infiltrated water cannot overflow out of the gap because the gap is too large, so the water is concentrated in one gap and flows out. When the water is concentrated in one gap and seeps out, it is easy for the gap to absorb too much water. When the water absorption limit is reached, water will overflow from the gap, while the remaining gaps lack the water absorption effect.

[0035] The two side edges of the permeable layer 3 are respectively fixed in the liquid-conducting layer 1 and are on two opposite sides.

[0036] The permeable layer 3 and the plurality of breathable protrusions 31 are integrally arranged, so each breathable protrusion 31 is hollow inside to provide a breathable effect for the permeable layer 3, and the coverage rate of the plurality of breathable protrusions 31 arranged on the upper and lower surfaces of the permeable layer 3 is 50%-90%.

[0037] When the coverage of the breathable protrusions 31 is less than 50%, the breathability performance is deviated and the novel breathability effect cannot be achieved.

[0038] When the coverage rate of the breathable protrusions 31 is greater than 50%, it can provide air permeability, but it is easy to cause the water flowing from the permeable layer 3 to the next water-absorbing layer 2 to be concentrated at a certain breathable protrusion 31 as a water outlet, and the water cannot be evenly discharged from the permeable layer 3 to the next water-absorbing layer 2.

[0039] One side surface of the liquid pulling diffusion layer 4 is in contact with the other absorption layer 2; the other surface of the liquid pulling diffusion layer 4 is connected to the two ends of the liquid conducting layer 1, and a plurality of discontinuous glue dot layers 5 are arranged between the surface of the liquid pulling diffusion layer 4 and the liquid conducting layer 1, and are arranged in sequence and in a straight line along the extension direction of the liquid pulling diffusion layer 4 and the liquid conducting layer 1.

[0040] After adopting the above structure, it needs to be further explained that the liquid-drawing diffusion layer 4 adopted in the present invention is an absorption layer 2 that has the function of absorbing water and diverting the water to the other side.

[0041] The width of the discontinuous glue layer 5 is 2 mm-6 mm, and it is sequentially and discontinuously applied on one side of the liquid diffusion layer 4 , and the bent end of the liquid guide layer 1 is bonded through the discontinuous glue layer 5 .

[0042] If the width of the discontinuous glue layer 5 is less than 2 mm, the connection strength between the diffusion layer 4 and the liquid-conducting layer 1 will be insufficient, which may easily cause the layers to fall off and scatter.

[0043] If the width of the discontinuous glue-dispensing layer 5 is greater than 6 mm, it is easy to consume too much glue, and the glue-dispensing layer that is too wide and too wide is easy to affect the penetration surface of the liquid-conducting layer 1 and occupy a part of the penetration space of the liquid-conducting layer 1.

[0044] The edge sealing structure at the front and rear ends of the liquid conducting layer 1, the absorbing layer 2, the permeable layer 3 and the liquid pulling and diffusion layer 4 is any one of heat pressing sealing, ultrasonic sealing and adhesive sealing.

[0045] After adopting the above structure, it needs to be further explained that the width of the utility model after assembly is 90mm-130mm.

[0046] 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 protection scope of the present invention.

Claims

1. A coated leak-proof absorbent core, comprising: A liquid conducting layer, an absorption layer, a permeation layer and a liquid pulling and diffusion layer, wherein the liquid conducting layer wraps the absorption layer and the permeation layer, the absorption layer has two layers, and the absorption layers are respectively arranged on two opposite sides of the permeation layer, an opening is provided on the surface of one side of the liquid conducting layer, and the opening of the liquid conducting layer is connected to one of the absorption layers; A discontinuous glue layer is provided between the inside of the liquid-conducting layer and the surface of one of the absorbing layers; Each of the absorbent layers is interspersed with a plurality of water absorbents; The permeable layer is provided with a plurality of breathable convex points on a surface adjacent to the two absorption layers; The front and rear ends of the liquid-conducting layer, the absorbing layer, the permeating layer and the liquid-pulling diffusion layer are respectively provided with a sealing edge.

2. A coated leak-proof absorbent core according to claim 1, characterized in that: The liquid conducting layer wraps the absorption layer and the permeation layer, and both ends of the liquid conducting layer extend to the outside of the liquid drawing diffusion layer, and both ends of the liquid conducting layer are bent and wrapped to the lower surface of the liquid drawing diffusion layer; The inner surface of the liquid-conducting layer is connected to one of the two absorption layers; The liquid guide layer is made of one of wood pulp dust-free paper, viscose polyester spunlace fabric, viscose wood pulp spunlace fabric and polyester wood pulp spunlace fabric.

3. The coated leak-proof absorbent core according to claim 1, characterized in that: Each of the absorbent layers is hollow, and each of the absorbents is arranged in a straight line in sequence along the transverse direction of the absorbent layer; Both ends of each of the water absorbents are fixedly connected to each corresponding edge seal; Each of the water absorbents is made of high molecular water absorbent resin.

4. The coated leak-proof absorbent core according to claim 1, characterized in that: The edges of both sides of the permeable layer are respectively fixed in the liquid-conducting layer, and are on two opposite sides.

5. The coated leak-proof absorbent core according to claim 1, characterized in that: One side surface of the liquid diffusion layer is in contact with the other absorption layer; The other surface of the liquid pulling diffusion layer is connected to the two ends of the liquid guiding layer, and a plurality of discontinuous glue dot layers are arranged between the surface of the liquid pulling diffusion layer and the liquid guiding layer, and are arranged in sequence and in a straight line along the extension direction of the liquid pulling diffusion layer and the liquid guiding layer.

6. The coated leak-proof absorbent core according to claim 1, characterized in that: The edge sealing structures at the front and rear ends of the liquid conducting layer, the absorption layer, the permeation layer and the liquid pulling and diffusion layer are any one of heat pressing sealing, ultrasonic sealing and adhesive sealing.

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