Sanitary napkin capable of achieving rapid absorption

Abstract

The utility model relates to a sanitary towel capable of absorbing quickly, which comprises a surface layer and a flow guide layer, the flow guide layer is arranged below the surface layer, the surface layer is combined with the flow guide layer in an ultrasonic heating mode, the surface layer is made of hot air non-woven fabric, hot rolling non-woven fabric or spunlace non-woven fabric, and the flow guide layer is made of hot air non-woven fabric or hot rolling non-woven fabric. The sanitary towel has the advantages that the non-woven fabric, such as the hot-air non-woven fabric, the hot-rolled non-woven fabric or the spunlace non-woven fabric, with thermoplastic fibers accounting for a certain proportion is used, and the heat bonding technology, such as the ultrasonic heating or hot rolling technology, is combined, so that partial structures, such as the surface layer, the flow guide layer, the leakage-proof partition edge and the surface layer, of the sanitary towel capable of being rapidly absorbed are achieved; according to the sanitary napkin, the core body and the flow guide layer are thermally combined, hot melt adhesive does not need to be adopted between the structures, the use experience of the sanitary napkin with the rapid absorption function is improved, cost expenditure is reduced, and then the cost performance of the sanitary napkin with the rapid absorption function is improved.

Description

Technical Field

[0001] The utility model relates to the field of sanitary products, in particular to a fast-absorbing sanitary napkin. Background Art

[0002] At present, the surface layer, guide layer and core of conventional sanitary napkin products are fixed with hot melt adhesive. All layers of sanitary napkin materials are bonded and reinforced by hot melt adhesive. Hot melt adhesive itself is water-repellent. Each layer of glue applied between the core and the surface layer of the sanitary napkin product will reduce the liquid infiltration rate of the sanitary napkin, thereby affecting the sanitary napkin's absorption effect on liquids. In addition, hot melt adhesive itself is a rubber or petroleum product, which has a certain odor. Especially during high-temperature transportation, it is more likely to have an unpleasant odor, affecting the user experience.

[0003] The Chinese utility model patent with announcement number CN212730166, which was announced on March 19, 2021, and the patent name is "A medical gauze cotton sanitary napkin", announced a medical gauze cotton sanitary napkin, including a surface layer, a leakproof partition, a guide layer, an absorbent layer, an impermeable bottom layer, a release paper and a film, the leakproof partition has two and is symmetrically arranged on both sides of the surface layer, the guide layer is arranged below the surface layer, the absorbent layer is arranged below the guide layer, the impermeable bottom layer is arranged below the absorbent layer, the release paper is arranged below the impermeable bottom layer, the film is arranged below the release paper, and the surface layer is composed of a first cotton layer, a second cotton layer, and a gauze layer arranged between the first cotton layer and the second cotton layer. However, the sanitary napkin disclosed in the utility model uses a cotton layer and a gauze layer. In order to assemble the sanitary napkin, hot melt adhesive must be used, which affects the user experience. Utility Model Content

[0004] In order to solve the problems existing in the above-mentioned prior art, the purpose of the utility model is to provide a fast-absorbing sanitary napkin, which can reduce the use of hot-melt adhesive and improve the user experience of the sanitary napkin.

[0005] The utility model discloses a fast-absorbing sanitary napkin, comprising: a surface layer and a guide layer, wherein the guide layer is arranged below the surface layer, the surface layer is combined with the guide layer by ultrasonic heating, the surface layer is made of hot air non-woven fabric, hot-rolled non-woven fabric or spunlace non-woven fabric, and the guide layer is made of hot air non-woven fabric or hot-rolled non-woven fabric.

[0006] Preferably, the fast-absorbing sanitary napkin also includes leak-proof edges, which are two and symmetrically arranged on both sides of the surface layer, bonded to the surface layer by hot rolling or ultrasonic heating, and are made of hot air non-woven fabric or hot rolled non-woven fabric.

[0007] Preferably, the fast-absorbing sanitary napkin further comprises a core body, the core body is combined with the guide layer by hot rolling, the core body comprises a wrapping layer and a core layer wrapped by the wrapping layer, and the wrapping layer is made of hot air non-woven fabric.

[0008] Preferably, the length of the wrapping layer is greater than the length of the core layer; the width of the wrapping layer is greater than the width of the core layer, and the wrapping layer is bent along the width direction of the core layer and wraps the core layer; or a wrapping layer is respectively arranged above and below the core layer, and the width of the wrapping layer extends along the two width directions of the core layer and exceeds both sides of the width direction of the core layer.

[0009] Preferably, the core body, the guide layer and the surface layer are provided with a common first guide groove, the widest width of the first guide groove is not less than the width of the core layer, and the longest length of the first guide groove is not less than the length of the core body.

[0010] Preferably, the hot air non-woven fabric is made of ES material.

[0011] Preferably, the core layer is made of SAP material, cellulose fiber, ES fiber or SAF fiber, and the wrapping layer is made of hot air non-woven fabric composed of ES fiber or SAF fiber.

[0012] Preferably, the fast-absorbing sanitary napkin further comprises a bottom film, wherein the bottom film is glued to the bottom of the core.

[0013] Preferably, the base film is made of PE material.

[0014] Preferably, the fast-absorbing sanitary napkin further comprises a release paper, and the release paper is glued under the base film.

[0015] Preferably, the fast-absorbing sanitary napkin further comprises a wrapping film, and the wrapping film is glued under the release paper.

[0016] Beneficial Effects

[0017] The advantage of the fast-absorbing sanitary napkin described in the utility model is that the fast-absorbing sanitary napkin uses a non-woven fabric in which thermoplastic fibers account for a certain proportion, such as hot air non-woven fabric, heat-rolled non-woven fabric or spunlace non-woven fabric, combined with thermal bonding technology, such as ultrasonic heating or hot rolling technology, to achieve partial structures of the fast-absorbing sanitary napkin, such as the surface layer and the guide layer, the leak-proof partition edge and the surface layer, and the thermal bonding between the core body and the guide layer. There is no need to use hot melt adhesive between the above structures, which improves the user experience of the fast-absorbing sanitary napkin, reduces cost expenditure, and thus improves the cost-effectiveness of the fast-absorbing sanitary napkin. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the cross-sectional structure of a fast-absorbing sanitary napkin described in the utility model;

[0019] Figure 2 This is a schematic diagram of the core of a fast-absorbing sanitary napkin described in the utility model. Figure 1 ;

[0020] Figure 3 This is a schematic diagram of the core of a fast-absorbing sanitary napkin described in the utility model. Figure 2 .

[0021] Description of reference numerals:

[0022] 100 surface layer 110 first guide groove 200 guide layer

[0023] 300 leakproof edge 310 three-piece embossed 400 core

[0024] 410 wrapping layer 420 core layer 500 base film

[0025] 600 Release paper 700 Film wrapping DETAILED DESCRIPTION

[0026] like Figure 1 As shown, the fast-absorbing sanitary napkin described in the utility model includes: a surface layer 100 and a guide layer 200, the guide layer 200 is arranged below the surface layer 100, the surface layer 100 is combined with the guide layer 200 by ultrasonic heating, the surface layer 100 is made of hot air non-woven fabric, hot-rolled non-woven fabric or spunlace non-woven fabric, and the guide layer 200 is made of hot air non-woven fabric or hot-rolled non-woven fabric.

[0027] During specific implementation, the hot air nonwoven fabric, the hot rolled nonwoven fabric or the spunlace nonwoven fabric adopts the hot air nonwoven fabric, hot rolled nonwoven fabric or spunlace nonwoven fabric in the prior art. Those skilled in the art can select the hot air nonwoven fabric, hot rolled nonwoven fabric or spunlace nonwoven fabric in the prior art according to actual needs. Specifically, the content of thermoplastic fibers in the hot air nonwoven fabric, the hot rolled nonwoven fabric and the spunlace nonwoven fabric can be more than 25%. Therefore, the thermoplastic fibers in the surface layer 100 and the thermoplastic fibers in the guide layer 200 can be melted and bonded together under the action of ultrasonic heating, so that the guide layer 200 is tightly combined under the surface layer 100, so that the use of hot melt adhesive to bond the surface layer 100 and the guide layer 200 can be avoided, which affects the user experience. Since there is no need to use hot melt adhesive, this reduces the cost expenditure and improves the cost performance of the fast-absorbing sanitary napkin.

[0028] According to the above technical solution, further, Figure 1As shown, it also includes leak-proof partition edges 300. The leak-proof partition edges 300 are two and symmetrically arranged on both sides of the surface layer 100. They are bonded to the surface layer 100 by hot rolling or ultrasonic heating, and are made of hot air non-woven fabric or hot rolled non-woven fabric.

[0029] In specific implementation, the hot air nonwoven fabric or the hot rolled nonwoven fabric adopts the hot air nonwoven fabric or the hot rolled nonwoven fabric in the prior art, and the technicians in this field can select the hot air nonwoven fabric or the hot rolled nonwoven fabric in the prior art according to actual needs. Specifically, the hot air nonwoven fabric or the hot rolled nonwoven fabric contains thermoplastic fibers, and the content thereof can be more than 25%. Therefore, during the hot rolling process or the ultrasonic heating process, the thermoplastic fibers in the leakproof partition 300 and the thermoplastic fibers in the surface layer 100 are melted and bonded together, so that the leakproof partition 300 is tightly combined with the surface layer 100. Specifically, because the longitudinal rolling method can be used when the hot rolling operation is performed on the leakproof partition 300, the three-piece embossing 310 is opened on the leakproof partition 300 by rolling, and the deepest part of the three-piece embossing 310 reaches or passes through the surface layer 100, and reaches or passes through the guide layer 200. Adopting hot rolling or ultrasonic heating method to bond the leakproof partition 300 and the surface layer 100 can avoid using hot melt adhesive to bond the surface layer 100 and the leakproof partition 300, which affects the user experience. Since hot melt adhesive is not needed, the cost expenditure is reduced, and the cost performance of the fast-absorbing sanitary napkin is improved.

[0030] According to the above technical solution, further, Figure 1 As shown, it also includes a core body 400, which is combined with the guide layer 200 by hot rolling. The core body 400 includes a wrapping layer 410 and a core layer 420 wrapped by the wrapping layer 410, and the wrapping layer 410 is made of hot air non-woven fabric.

[0031] During specific implementation, the hot air non-woven fabric adopts the hot air non-woven fabric in the prior art, and those skilled in the art can select the hot air non-woven fabric in the prior art according to actual needs. Specifically, the content of thermoplastic fibers in the hot air non-woven fabric can be more than 25%. Therefore, the thermoplastic fibers in the wrapping layer 410 and the thermoplastic fibers in the guide layer 200 are melted and bonded together during the hot rolling process. The core layer 420 is made of a strong absorbent material, and the strong absorbent material adopts the strong absorbent material in the prior art. Those skilled in the art can select the strong absorbent material in the prior art according to actual needs. The above design avoids the use of hot melt adhesive to affect the user experience. Since there is no need to use hot melt adhesive, this reduces cost expenditure and improves the cost performance of the fast-absorbing sanitary napkin.

[0032] According to the above technical solution, further, the length of the wrapping layer 410 is greater than the length of the core layer 420; Figure 3 As shown, the width of the wrapping layer 410 is greater than the width of the core layer 420, and the wrapping layer 410 is bent along the width direction of the core layer 420 and wraps the core layer 420; or, as shown Figure 2 As shown, the wrapping layer 410 is disposed above and below the core layer 420 , respectively. The width of the wrapping layer 410 extends along the two width directions of the core layer 420 and exceeds the two sides of the width direction of the core layer 420 .

[0033] In specific implementation, the length of the wrapping layer 410 is greater than the length of the core layer 420 because the hot rolling method is hot rolling along the length direction, for example, the longitudinal rolling method is adopted. Only when the length of the wrapping layer 410 is greater than the length of the core layer 420, the first guide groove 110 generated by the longitudinal rolling of the core body 400 can pass through the entire core layer 420, which not only realizes a good guide function, but also avoids the instability of the combination of the core body 400 with the surface layer 100 and the guide layer 200 caused by insufficient longitudinal rolling length. The width of the wrapping layer 410 is greater than the width of the core layer 420. There are two schemes for the wrapping layer 410 to wrap the core layer 420, one is to use a single wrapping layer 410 to bend and wrap the core layer 420 along the width direction of the core layer 420, and the other is to use two wrapping layers 410 to be respectively arranged above and below the core layer 420, and both sides of the width direction of each wrapping layer exceed the width direction side of the core layer 420.

[0034] According to the above technical solution, further, Figure 1 As shown, the core body 400 , the guide layer 200 and the surface layer 100 are provided with a common first guide groove 110 , the widest width of the first guide groove 110 is not less than the width of the core layer 420 , and the longest length of the first guide groove 110 is not less than the length of the core body 400 .

[0035] In a specific implementation, after the guide layer 200 and the surface layer 100 are combined by ultrasonic heating, the core 400 is combined with the combination of the guide layer 200 and the surface layer 100 by hot rolling. The core 400 is arranged below the guide layer 200. During hot rolling, the longitudinal rolling method can be used to hot roll the surface layer 100 in the length direction, and the first guide groove 110 is opened by hot rolling. The above-mentioned thermal bonding method can not only open the first guide groove 110, but also make the thermoplastic fibers in the core 400, the guide layer 200 and the surface layer 100 melt and bond together. Since the core 400, the guide layer 200 and the surface layer 100 are hot rolled at the same time, the first guide groove 110 generated by hot rolling is shared by the three. The outer periphery of the first guide groove 110 is a rectangular, rounded rectangular or other frame-shaped structure, which may be one or more. In order to efficiently and fully guide the flow, the widest width of the first guide groove 110 located at the outermost side of all the first guide grooves 110 is not less than the width of the core layer 420, and the longest length of the first guide groove 110 located at the outermost side of all the first guide grooves 110 is not less than the length of the core body 400.

[0036] According to the above technical solution, further, the hot air non-woven fabric is made of ES material.

[0037] In a specific implementation, when the surface layer 100, the guide layer 200 and the leakproof partition 300 are made of the hot air non-woven fabric, the hot air non-woven fabric is made of ES material. The ES material is a polyolefin fiber material. In the utility model, the ES material is an ES material in the prior art. Those skilled in the art can select the ES material in the prior art according to actual needs.

[0038] According to the above technical solution, further, the core layer 420 is made of SAP material, cellulose fiber, ES fiber or SAF fiber, and the wrapping layer 410 is made of hot air non-woven fabric composed of ES fiber or SAF fiber.

[0039] During specific implementation, the core layer 420 is made of a material with strong absorption function. Specifically, it can be made of SAP. The SAP material is a highly water-absorbent material. In the utility model, the SAP material adopts the SAP material in the prior art. Those skilled in the art can select the SAP material in the prior art according to actual needs. As mentioned above, the ES fiber is a polyolefin fiber. The cellulose fiber refers to fibers composed of cellulose such as fluff pulp, pure cotton, and viscose. The cellulose fiber adopts the cellulose fiber in the prior art. Those skilled in the art can select the cellulose fiber in the prior art according to actual needs. The SAF fiber is a highly water-absorbent fiber. The SAF fiber in the prior art is adopted. Those skilled in the art can select the SAF fiber in the prior art according to actual needs.

[0040] According to the above technical solution, further, Figure 1 As shown, it also includes a bottom film 500, which is glued under the core 400 and is made of PE material or degradable material.

[0041] In a specific implementation, in order to separate the core 400 and clothing when the fast-absorbing sanitary napkin is used, the bottom film 500 is made of PE material and is glued under the core 400. The PE material is polyethylene material. In the utility model, the PE material is a PE material in the prior art, and those skilled in the art can select a PE material in the prior art according to actual needs.

[0042] According to the above technical solution, further, Figure 1 As shown, a release paper 600 is also included, and the release paper 600 is glued under the base film 500.

[0043] In a specific implementation, the release paper 600 is adhered to the bottom of the base film 500 by self-adhesive glue, so that it is easy to tear off.

[0044] According to the above technical solution, further, Figure 1 As shown, it also includes a packaging film 700 , and the packaging film 700 is glued under the release paper 600 .

[0045] In a specific implementation, the packaging film 700 is used to package the fast-absorbing sanitary napkin, so the packaging film is adhered to the bottom of the release paper 600 by a self-adhesive adhesive and is torn off when the package is unpacked.

[0046] The preparation process of the fast-absorbing sanitary napkin is as follows:

[0047] The surface layer 100 is arranged on the guide layer 200, and then the surface layer 100 and the guide layer 200 are compositely reinforced by ultrasonic heating to form a first composite layer;

[0048] The two leak-proof partition edges 300 are respectively arranged on both sides of the surface layer 100 and are compounded with the first composite layer by hot rolling or ultrasonic heating processing to form a second composite layer;

[0049] After the core body 400 passes through the inner cutter, it is composite-reinforced with the second composite layer by hot rolling to form a third composite layer;

[0050] Then the base film 500 is glued and then reinforced together with the third composite layer by gluing;

[0051] Then the release paper 600 is reinforced onto the product by scraping glue, and finally, after being sealed and cut outwardly, it is compounded with the packaging film 700 to form the fast-absorbing sanitary napkin.

[0052] In the description of the present disclosure, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present disclosure and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present disclosure.

[0053] For those skilled in the art, various other corresponding changes and deformations can be made according to the technical solutions and concepts described above, and all of these changes and deformations should fall within the protection scope of the claims of the present disclosure.

Claims

1. A fast-absorbing sanitary napkin, characterized in that: include: A surface layer (100) and a guide layer (200), wherein the guide layer (200) is arranged below the surface layer (100), the surface layer (100) is combined with the guide layer (200) by ultrasonic heating, the surface layer (100) is made of hot air non-woven fabric, hot rolled non-woven fabric or spunlace non-woven fabric, and the guide layer is made of hot air non-woven fabric or hot rolled non-woven fabric.

2. The fast-absorbing sanitary napkin according to claim 1, characterized in that: It also includes leakproof partition edges (300), which are two and symmetrically arranged on both sides of the surface layer (100), bonded to the surface layer (100) by hot rolling or ultrasonic heating, and are made of hot air non-woven fabric or hot rolled non-woven fabric.

3. The fast-absorbing sanitary napkin according to claim 2, characterized in that: It also includes a core body (400), the core body (400) is combined with the guide layer (200) by hot rolling, the core body (400) includes a wrapping layer (410) and a core layer (420) wrapped by the wrapping layer (410), and the wrapping layer (410) is made of hot air non-woven fabric.

4. The fast-absorbing sanitary napkin according to claim 3, characterized in that: The length of the wrapping layer (410) is greater than the length of the core layer (420); the width of the wrapping layer (410) is greater than the width of the core layer (420), and the wrapping layer (410) is bent along the width direction of the core layer (420) and wraps around the core layer (420); or a wrapping layer (410) is provided above and below the core layer (420), respectively, and the width of the wrapping layer (410) extends along both width directions of the core layer (420) and exceeds both sides of the width direction of the core layer (420).

5. The fast-absorbing sanitary napkin according to claim 4, characterized in that: The core body (400), the guide layer (200) and the surface layer (100) are provided with a common first guide groove (110), the widest width of the first guide groove (110) is not less than the width of the core layer (420), and the longest length of the first guide groove (110) is not less than the length of the core body (400).

6. The fast-absorbing sanitary napkin according to claim 1 or 2, characterized in that: The hot air nonwoven fabric is made of ES material.

7. The fast-absorbing sanitary napkin according to claim 3, characterized in that: The core layer (420) is made of SAP material, cellulose fiber, ES fiber or SAF fiber, and the wrapping layer (410) is made of hot air non-woven fabric composed of ES fiber or SAF fiber.

8. The fast-absorbing sanitary napkin according to claim 3, characterized in that: It also includes a bottom film (500), the bottom film (500) is glued under the core (400), and the bottom film (500) is made of PE material.

9. The fast-absorbing sanitary napkin according to claim 8, characterized in that: It also includes a release paper (600), and the release paper (600) is glued under the base film (500).

10. The fast-absorbing sanitary napkin according to claim 9, characterized in that: It also includes a packaging film (700), and the packaging film (700) is glued under the release paper (600).

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