Absorbent article with functional layer

Abstract

The embodiment of the present application provides a kind of absorbent article with functional layer, including body, body includes the surface layer, absorbent layer and bottom layer of laminated arrangement, surface layer and bottom layer are combined along a outer edge portion, body also includes middle part area and side area, outer edge portion includes a outward bulge in side area Bulge, body is folded and forms folded body along a first fold line passing through bulge in a way that surface layer becomes inner surface, folded body also includes a connecting portion located in bulge and located on the surface layer on both sides of first fold line, body also includes functional layer arranged between surface layer and absorbent layer, the functional layer is liquid-impermeable material, on the one hand, no longer set notch portion on absorbent layer, so that absorbent layer has greater absorption area, while reducing polymerization phenomenon, on the other hand, when there is a large amount of emulsion overflow, emulsion enters gap area, because functional layer is liquid-impermeable material, so that emulsion will not overflow to cause discomfort, thereby improving use comfort.

Description

Technical Field

[0001] This invention relates to the field of absorbent products, specifically to an absorbent product. Background Technology

[0002] Absorbent products are widely used in people's lives. Among them, breast pads are a common type of absorbent product used to prevent breast milk leakage in breastfeeding women. As people's living standards continue to improve, they are receiving more and more attention. When using absorbent products, they need to be kept in close contact with the breast. Since the breast is hemispherical, absorbent products also need to be designed to be hemispherical to adapt to the shape of the breast and thus improve comfort.

[0003] To achieve a hemispherical shape, several technologies have been developed: For example, a flat circular material is formed on the outer surface layer using heat-deformable materials such as polyethylene. This flat circular material is then heated and pressed onto a hemispherical mold for heat molding. Such products have poor shape retention. Once the hemispherical shape deforms, its adhesion will deteriorate, resulting in positional displacement. For example, the technical solution disclosed in document JP1992209802A - Elastic Breast Pads is to provide a converging part made of elastic body such as rubber bands on one or both sides of a circular or nearly circular product in its longitudinal direction, thereby forming a hemispherical shape with better shape retention. However, because rubber bands are provided on both sides, these rubber bands often cause constriction or friction on the user's skin, causing discomfort to the user. For example, the technical solution disclosed in document CN101299936A, "Breast Milk Liner and its Manufacturing Method," involves setting notches on one side or opposite sides of the absorbent layer, connecting the surface layers at the notches along the center line of the notches in a mutually adhering direction, and forming a bond between the surface layers to create a hemispherical three-dimensional shape. This method, because it requires setting notches on the absorbent layer, leads to a reduction in absorption capacity. Furthermore, the top of the notch is adjacent to the emulsion leakage area, affecting emulsion absorption. In addition, because an opening needs to be made in the absorbent layer, polymer precipitation is likely to occur at the top of the notch after bonding.

[0004] In addition, existing absorbent products still have problems when there is a large amount of bodily fluid leakage. The instantaneous absorption capacity is insufficient, causing the bodily fluid to flow down the surface layer, resulting in discomfort. Furthermore, their ability to cope with repeated spitting up or leakage of bodily fluid is still insufficient. Summary of the Invention

[0005] Therefore, the present invention provides an absorbent product with a functional layer to solve the above-mentioned technical problems.

[0006] An absorbent product with a functional layer includes a body comprising a top layer, an absorbent layer, and a bottom layer stacked together. The top layer and the bottom layer are joined together along an outer periphery. The body also includes a central region and a side region. The outer periphery includes an outwardly protruding portion in the side region. The body is folded along a first fold line passing through the protruding portion, with the top layer becoming the inner surface, to form a folded body. The folded body also includes a joining portion located at the protruding portion and connecting the side layers located on both sides of the first fold line. The body also includes a functional layer disposed between the top layer and the absorbent layer, the functional layer being a liquid-impermeable material.

[0007] The aforementioned protrusions are in pairs, and the outer peripheral portion includes an outer connecting portion connecting the pair of protrusions. The absorbent layer includes a first edge line corresponding to the protrusions and a second edge line corresponding to the outer connecting portion. The first edge line is either straight or protruding outward.

[0008] The main body includes a lower side area, the isolation area is located in the lower side area, and the functional layer includes an upper edge line, which is spaced apart from the middle area.

[0009] The upper edge line is a straight line and is parallel to the first fold line, or the upper edge line is an arc protruding away from the central area, making the functional layer crescent-shaped.

[0010] The upper edge line is an arc shape that bulges away from the central area. The upper edge line includes a midpoint and endpoints on both sides. The midpoint is the point with the greatest distance between the upper edge line and the first broken line. Meanwhile, the endpoints are located on the first broken line.

[0011] The upper edge line is a straight line. Let D be the distance between the upper edge line and the first broken line. Then 40mm ≥ D ≥ 10mm.

[0012] The functional layer has a first additional layer on the side facing the absorption layer.

[0013] The first additional layer includes microcapsules, which include a wall material and a core material, wherein the wall material is a water-soluble material.

[0014] The main body also has a diffusion layer in the central region, which is disposed between the surface layer and the absorption layer, and the diffusion layer and the functional layer include an overlapping area.

[0015] The first additional layer further includes a surfactant, and / or the absorbent layer is further provided with a second additional layer, the second additional layer including a surfactant, and / or the diffusion layer is provided with a surfactant.

[0016] Beneficial Effects: This invention provides an absorbent product comprising a body, which includes a top layer, an absorbent layer, and a bottom layer stacked together. The top layer and the bottom layer are joined along an outer periphery. The body also includes a central region and a side region. The outer periphery includes an outwardly protruding portion in the side region. The body is folded along a first fold line passing through the protruding portion, with the top layer becoming the inner surface, to form a folded body. The folded body also includes a joining portion located at the protruding portion and connecting the side layers located on both sides of the first fold line. The body also includes a functional layer disposed between the top layer and the absorbent layer. The functional layer is made of a liquid-impermeable material. On the one hand, the absorbent layer no longer has gaps, allowing it to have a larger absorption area and reducing polymer exudation. On the other hand, when a large amount of emulsion overflows, the emulsion enters the gap area. Because the functional layer is made of a liquid-impermeable material, the emulsion will not overflow and cause discomfort, thereby improving user comfort. Attached Figure Description

[0017] Figure 1 A front view of the main body of the first embodiment of the present invention; Figure 2 for Figure 1 A schematic diagram of the folded body formed by folding the main body along the first fold line; Figure 3 for Figure 2 Schematic diagram of the AA section; Figure 4 This is a front view of the main body according to the second embodiment of the present invention; Figure 5 for Figure 4 BB cross-sectional diagram; Figure 6 This is a front view of the main body of the third embodiment of this invention; Explanation of component symbols in the diagram: Body 10, 20; Folded body 100; Central region 101; Side region 102; First fold line 103, 303; Surface layer 11, 21; Absorbing layer 12, 22; First edge line 121; Second edge line 122; Bottom layer 13, 23; Functional layer 14, 24, 34; Gap region 140; Upper edge line 141, 341; First additional layer 142, 242; Outer peripheral region 15; Outer connecting region 151; Protrusion 152; Joint 153; Diffusion layer 26; Overlapping region 261; Second additional layer 221; Midpoint 322; Endpoint 323. Detailed Implementation

[0018] Please refer to the attached document. Figure 1-3The first embodiment of this application provides an absorbent product with a functional layer, including a body 10. The body 10 includes a top layer 11, a bottom layer 13, and an absorbent layer 12 sandwiched between the top layer 11 and the bottom layer 13. The absorbent product shown in this embodiment is a breast pad. This structure can also be applied to products such as panty liners and sanitary napkins, which will not be described in detail here.

[0019] The surface layer 11 is disposed on the side close to the user's skin. Since it is in contact with the skin, it is preferably made of a sheet material with low irritation and softness, such as gauze, cotton, spunlace nonwoven fabric, hot air nonwoven fabric, etc., with a unit area weight of 10-60 g / m2. More preferably, it is a hot air nonwoven fabric made of thermoplastic synthetic fibers.

[0020] As the synthetic fibers constituting the above-mentioned hot air nonwoven fabric, polyethylene (PE) fibers, polyolefin fibers such as polypropylene (PP) fibers, polyester fibers, polyamide fibers such as nylon, etc. can be used. In some optional embodiments, natural fibers or viscose fibers can also be added at the same time to further reduce skin irritation. These natural fibers can include wood fibers, cotton fibers, etc.

[0021] The absorbent layer 12 is disposed between the top layer 11 and the bottom layer 13. Specifically, the absorbent layer 12 is a three-dimensional network structure formed by several entangled fibers connected appropriately. Several pores are distributed between the three-dimensional network structure, and superabsorbent polymer (SAP) is contained between the three-dimensional network structure. Liquid can be absorbed and diffused through these pores, and liquid can be absorbed and retained through the superabsorbent polymer. The fibers can be fluff pulp.

[0022] In some embodiments, the absorbent layer 12 further includes a coating layer covering the three-dimensional network structure. The coating layer is typically disposed on the upper and lower sides of the three-dimensional network structure to prevent the superabsorbent polymer material between the three-dimensional network structures from precipitating out through the pores to the surface of the absorbent layer 12 and to prevent the superabsorbent polymer material from being lost with the airflow under negative pressure during the manufacturing process of the absorbent layer 12, thereby reducing the adsorption effect of the absorbent layer 12.

[0023] The bottom layer 13 is positioned away from the user's skin. To prevent liquid from seeping through the top layer 11 and contaminating the user's clothing, the bottom layer 13 is typically made of a water-repellent material, such as a PE film or SMS non-woven fabric. Preferably, the bottom layer 13 allows gas, such as water vapor, to pass through while preventing liquid from passing through, thus preventing stuffiness during use.

[0024] The main body 10 includes a central area 101 and side areas 102 located on the left and right sides of the central area 101. The central area 101 refers to the area corresponding to the nipple. It can be understood that the central area 101 also includes an upper side area and a lower side area in the vertical direction. In actual use, the lower side area is located below the central area 101 when the absorbent is attached to the breast, the upper side area is located above the central area 101 when the absorbent is attached to the breast, and the side areas 102 are located to the left or right of the central area 101 when the absorbent is attached to the breast.

[0025] The body 10 includes an outer peripheral portion 15. The surface layer 11 and the bottom layer 13 are combined into a whole in the outer peripheral portion 15. It can be understood that after the surface layer 11 and the bottom layer 13 are combined, a hollow accommodating space is formed. The absorbent layer 12 is accommodated in this accommodating space. The combination refers to the connection of the materials to form a whole. Usually, it can be formed by hot melting or bonding. Hot melting can be achieved by heating the material itself to reach its melting point temperature, then locally melting and solidifying to form a connection. Alternatively, external energy such as ultrasound can be applied to the material to cause local high-temperature melting and solidification to form a connection.

[0026] The outer peripheral portion 15 is provided near the outer edge of the body 10, including a pair of protrusions 152 respectively provided in the side region 102 and an outer connecting portion 151 connecting the pair of protrusions 152. The protrusions 152 protrude outward. It can be explained that outward means away from the central region 101, and inward means towards the central region 101. The meaning of protruding outward is that the curvature of the outer edge line of the protrusion 152 is greater than the curvature of the connecting portion, so that the entire protrusion 152 has an outward protruding shape.

[0027] It is understood that there is a pair of side regions 102, which are respectively arranged on both sides of the central region 101, and there is also a pair of protrusions 152, which are symmetrically arranged along a center line perpendicular to the first fold line 103.

[0028] The main body 10 is folded along a first fold line 103 passing through the protrusion 152 with the surface layer 11 as the inner surface to form a folded body 100. The folded body 100 also includes a joint portion 153 located at the protrusion 152 and connecting the surface layers 11 located on both sides of the first fold line 103. It is understood that the joint portion 153 can be formed by welding or bonding.

[0029] Understandably, after the connecting part 153 is connected to the surface layer 11, a fixed connection is formed, so that the folded body 100 forms a hemispherical shape after being unfolded.

[0030] Furthermore, the joint portion 153 includes a joint edge line, which is inclined to the first fold line 103.

[0031] Furthermore, the connecting edge line extends from the outer edge line of the protrusion 152 to the first fold line 103.

[0032] The absorption layer 12 does not have a notch recessed into the central region 101 in the area corresponding to the protrusion 152. Specifically, the absorption layer 12 includes a first edge line 121 and a second edge line 122. The first edge line 121 is the edge line of the area corresponding to the protrusion 152 of the absorption layer 12, and the second edge line 122 is the edge line of the area corresponding to the outer connecting part 151 of the absorption layer 12. The first edge line 121 is either straight or protruding outward.

[0033] Understandably, when the first edge line 121 protrudes outward, it can be in the shape of an outward-protruding arc.

[0034] In addition, in this embodiment, the second edge line 122 is an arc shape that protrudes away from the central region 101. However, the second edge line 122 can also be in other shapes, which are not limited here.

[0035] Furthermore, the first edge line 121 is perpendicular to the first broken line 103.

[0036] The body 10 also includes a functional layer 14 disposed between the surface layer 11 and the absorbent layer 12, wherein the functional layer 14 is a liquid-impermeable material.

[0037] More specifically, a gap region 140 is included between the functional layer 14 and the absorbent layer 12. The functional layer 14 is located in the lower region and includes an upper edge line 141. The upper edge line 141 is spaced apart from the middle region 101 so that when the absorbent is attached to the breast, the nipple is directly opposite the middle region 101, while the functional layer 14 is located on the lower side of the breast and is separated from the nipple. This allows the middle region 101, which is directly opposite the nipple, to absorb milk when it leaks from the nipple. When a large amount of milk leaks out, the milk flows downward under the action of gravity and enters the gap region 140. Since the functional layer 14 is made of a liquid-impermeable material, it will not flow or overflow directly onto the surface layer 11, thus preventing discomfort.

[0038] In one specific embodiment, the absorbent material of the present invention is compared with the existing breast pads shown in CN101299936A. The test method of QB / T 5049-2017 Breast Pads is used. Under the condition that the absorbent body diameter is the same and the surface and bottom layer materials are basically the same, the total absorption capacity is increased by more than 8% and the reabsorption capacity is reduced by more than 15%.

[0039] Understandably, the functional layer 14 covers a portion of the absorption layer 12 to form a covered area. Preferably, the area of ​​the covered area is less than 45% of the area of ​​the absorption layer 12. More preferably, the area of ​​the covered area is greater than 15% of the area of ​​the absorption layer 12. Even more preferably, the area of ​​the covered area is 20%-40% of the area of ​​the absorption layer 12.

[0040] Furthermore, the upper edge line 141 is a straight line, and the upper edge line 141 is parallel to the first fold line 103, so that when the user opens the absorbent product and unfolds it into a hemispherical shape, the functional layer 14 is located on the lower side of the absorbent product.

[0041] Furthermore, if the distance between the upper edge line 141 and the first fold line 103 is D, then D≥10mm, more preferably, D≥12mm. Meanwhile, in order to allow the emulsion to easily enter the space between the functional layer 14 and the absorbent layer 12, D≤40mm.

[0042] Furthermore, a first additional layer 142 may be provided on the functional layer 14. The functional layer includes functional components for releasing functional components when the emulsion enters the gap region 140.

[0043] Furthermore, the functional component is a microcapsule, which includes a wall material and a core material. The wall material is a water-soluble material, and the core material is a flavoring agent, antibacterial agent, or other components. When the emulsion comes into contact with the microcapsule, the wall material dissolves and releases the core material components.

[0044] Furthermore, the wall material can be one of gum arabic, gelatin, and sodium alginate.

[0045] Furthermore, when the core material is an antibacterial agent, the antibacterial agent is preferably a natural antibacterial agent, specifically such as seaweed extract, aloe vera extract, amino acids, sodium lactate, urea, hyaluronic acid, sodium pyrrolidone carboxylate, ceramide, collagen, chitin derivatives, mucopolysaccharides, chondroitin sulfate, lactic acid and its salts (such as sodium lactate), corn steep liquor, hydrolyzed starch hydrolysis product urea, triglycerides, palmitic acid, myristic acid, stearic acid, silicone, sodium pyrrolidone carboxylate, etc.

[0046] Furthermore, the first additional layer 142 is disposed on the surface of the functional layer 14 facing the absorbent layer 12. With this arrangement, on the one hand, the first additional layer 142 can be protected by the surface layer 11 and the functional layer 14, and will not come into unexpected contact with the liquid or be released unexpectedly, thereby extending the shelf life of the functional component. On the other hand, the first functional component can quickly come into contact with the emulsion and be released. Compared with the conventional method of setting the functional component on the surface layer 11 or directly on the absorbent layer 12, its effective shelf life can be extended by more than 15%, and the release time can be shortened by more than 5%.

[0047] It is understood that the first additional layer 142 can be applied to the functional layer 14 by coating or spraying.

[0048] In addition, the functional layer 14 can be made of materials such as PE, PP or SMS.

[0049] Please refer to this as well. Figure 4 and Figure 5 ,exist Figure 4 and Figure 5 The image shows the absorbent body 20 of the second embodiment, which also has a diffusion layer 26 in the central region for faster diffusion of the emulsion in the permeable surface layer 21. Typically, the diffusion layer 26 is also referred to as the ADL layer and is usually a breathable bonded combed fiber web. In one specific embodiment, the diffusion layer 26 is formed by mixing 40% of 6 denier polyester fiber and 60% of 3 denier polypropylene / polyethylene core-sheath bicomponent fiber.

[0050] In this embodiment, the diffusion layer 26 is circular in shape and includes an overlapping area 261 that overlaps with the functional layer 24. The overlapping area 261 is located between the functional layer 24 and the absorption layer 22. By setting the diffusion layer 26 in this way, the overflowing emulsion is quickly absorbed by the absorption layer 22 or enters the gap area and is absorbed by the absorption layer 22, thus avoiding the emulsion from seeping back through the surface layer 21 and causing discomfort to the user.

[0051] Furthermore, a second additional layer 221 may be provided on the side opposite to the functional layer 24 of the absorbent layer 22. The second additional layer 221 is provided with functional ingredients for releasing functional ingredients. The functional ingredients may be one of moisturizers, fragrances, and antibacterial agents.

[0052] Furthermore, the second additional layer 221 may also include a surfactant. When the second additional layer 221 is a surfactant, it can accelerate the inward penetration when the emulsion passes through, reducing the risk of the emulsion overflowing to the surface layer. Similarly, the first attachment layer 221 may also include a surfactant. Furthermore, the diffusion layer 26 is also provided with a surfactant to achieve multi-layered guidance of the liquid to flow and be absorbed into the absorption layer.

[0053] The above settings enable the emulsion to flow and diffuse quickly, increasing the diffusion speed by more than 20% compared to conventional absorbent products.

[0054] Furthermore, the functional components of the second additional layer 221 are different from those of the first additional layer 242, so as to achieve different functions.

[0055] Please refer to this as well. Figure 6 , Figure 6 The body of the absorbent article of the third embodiment is shown, in which the upper edge line 341 of the functional layer 34 is an arc shape that protrudes away from the central region, so that the entire functional layer 34 is crescent-shaped.

[0056] It is understood that the upper edge line 341 includes a midpoint 322 and endpoints 323 located on both sides. The midpoint 322 is the point with the largest distance between the upper edge line 341 and the first broken line 303, and the endpoints 323 are located on the first broken line 303.

[0057] Furthermore, the functional layer 34 extends to the protrusion, that is, the protrusion includes a layered surface layer, the functional layer 34 and the bottom layer. When the joint is formed and the folded body is formed by hot melting or ultrasonic welding, the protrusion has a relatively thicker thickness, thereby facilitating entry into the joint area or facilitating the application of pressure by the welding device.

[0058] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. An absorbent product with a functional layer, comprising a body, said body comprising a top layer, an absorbent layer, and a bottom layer stacked together, said top layer and bottom layer being bonded together along an outer periphery, characterized in that, The body further includes a central region and a side region. The outer peripheral portion includes an outwardly protruding portion in the side region. The body is folded along a first fold line passing through the protruding portion, with the surface layer becoming the inner surface, to form a folded body. The folded body also includes a joint portion located at the protruding portion and connecting the side layers located on both sides of the first fold line. The body also includes a functional layer disposed between the surface layer and the absorbent layer. The functional layer is made of a liquid-impermeable material. The functional layer includes an upper edge line, which is spaced apart from the central region. A gap region is included between the functional layer and the absorbent layer. The functional layer is located in the lower side region. The body also has a diffusion layer disposed in the central region. The diffusion layer is disposed between the surface layer and the absorbent layer, and an overlap region is included between the diffusion layer and the functional layer. The overlap region is located between the functional layer and the absorbent layer. A first additional layer is disposed on the side of the functional layer facing the absorbent layer. The first additional layer includes a functional component, which is a microcapsule. The microcapsule includes a wall material and a core material, wherein the wall material is a water-soluble material.

2. The absorbent article as described in claim 1, characterized in that, The protrusions are a pair, and the outer peripheral portion includes an outer connecting portion connecting the pair of protrusions. The absorbent layer includes a first edge line corresponding to the protrusions and a second edge line corresponding to the outer connecting portion. The first edge line is either straight or protruding outward.

3. The absorbent article as described in claim 2, characterized in that, The upper edge line is a straight line and is parallel to the first fold line, or the upper edge line is an arc protruding away from the central area, making the functional layer crescent-shaped.

4. The absorbent article as described in claim 3, characterized in that, The upper edge line is an arc shape that bulges away from the central area. The upper edge line includes a midpoint and endpoints on both sides. The midpoint is the point with the greatest distance between the upper edge line and the first broken line. At the same time, the endpoints are located on the first broken line.

5. The absorbent article as described in claim 3, characterized in that, The upper edge line is straight. Let D be the distance between the upper edge line and the first broken line. Then 40mm ≥ D ≥ 10mm.

6. The absorbent article as described in claim 1, characterized in that, The first additional layer further includes a surfactant, and / or the absorbent layer is further provided with a second additional layer, the second additional layer including a surfactant, and / or the diffusion layer is provided with a surfactant.

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