Scale stacking tampon based on inner support

Abstract

The embodiment of the invention provides a scaled laminated tampon based on an inner support, which comprises a main body, and the main body comprises an inner support, an outer support and a plurality of through holes, and the inner support is provided with a hollow space and is provided with a plurality of through holes; the main absorption part is accommodated in the hollow space and is formed by winding a main absorption sheet; the outer absorption part comprises a plurality of outer absorption sheets; wherein one end of each outer absorption piece is fixed on the inner support, the other end of each outer absorption piece extends towards the adjacent outer absorption piece and is stacked on the adjacent outer absorption piece, the main absorption part is in contact with the outer absorption pieces through the through holes, and the main absorption part is limited by the inner support through the arrangement. Therefore, the use discomfort caused by the increase of circumferential volume due to swelling or swelling is prevented; meanwhile, the fish-scale-shaped stacked structure is formed, so that the body fluid can conveniently flow downwards, and the viscous body fluid can be diffused inwards along gaps of the fish-scale-shaped stacked structure, and therefore, the fish-scale-shaped body fluid absorption device is suitable for absorption of high-viscosity or low-viscosity body fluid.

Description

TECHNICAL FIELD

[0001] The present application relates to an inner support based scale-by-scale laminated sanitary tampon. BACKGROUND

[0002] Menstrual sanitary tampons for intravaginal use have been widely used due to their hygiene, non-protrusion and comfort.

[0003] Sanitary tampons are generally made of absorbent fibers, generally in the shape of a cylinder, and provided with outer grooves or channels on the outside to increase the surface of the sanitary tampon for absorption, which can be formed by compressing the main body of the sanitary tampon, such as the structures and forms shown in documents CN1531415A, DE102005050514A1, EP0149155A2, US8834439B2, etc.

[0004] It has been found that even when equipped with these grooves or channels, users still face the problem of insufficient absorption capacity of the sanitary tampon, and one solution is to add materials with high absorption capacity such as SAP inside the sanitary tampon, but generally, after adding SAP inside the sanitary tampon, due to the water absorption and swelling of the SAP, two problems arise, one is that the water absorption and swelling of the SAP cause some areas to bulge or cause the external shape of some areas to change, thereby causing the user to feel uncomfortable, and the other is that the water absorption and swelling of the SAP cause the overall structure of the sanitary tampon to change, causing the structure to further loosen or some structures to peel off when pulling the withdrawal string, causing inconvenience to use.

[0005] In document CN120392426A, it is proposed to use softer materials inside the main body, and the SAP is covered in these softer materials, and at the same time, the inner and outer absorbent sheets are formed with wrinkle spaces to provide space for swelling, thereby providing expansion space for the swelling of the SAP, reducing the probability of external bulging, and improving comfort of use, but this solution still has a probability of external bulging, especially when the amount of SAP is further increased, the external bulging phenomenon is significantly increased.

[0006] Therefore, there is a need for a new technical solution to solve the above technical problems. SUMMARY

[0007] The present application provides an inner support based scale-by-scale laminated sanitary tampon to solve the above technical problems.

[0008] An inner support based scale-by-scale laminated sanitary tampon, comprising a main body, the main body comprising: an inner support having a hollow space and provided with a plurality of through holes; a main absorption part accommodated in the hollow space and formed by winding a main absorption sheet; outer absorption parts, comprising a plurality of outer absorption pieces; Wherein, one end of each outer absorption piece is fixed on the inner support, and the other end extends to the direction of the adjacent outer absorption piece and is stacked on the adjacent outer absorption piece, and the main absorption part is in contact with the outer absorption piece through the through hole.

[0009] Wherein, the inner support comprises a center line, and a plurality of first support parts arranged along the extension direction of the center line, the first support part comprises a pair of spaced cylindrical parts and a plurality of first ribs connecting the pair of cylindrical parts.

[0010] Wherein, the pair of cylindrical parts comprises a first cylindrical part and a second cylindrical part, the first cylindrical part and the second cylindrical part are thin-walled cylindrical, the first rib is connected to the first cylindrical part and the second cylindrical part at both ends respectively, and the first cylindrical part, the second cylindrical part and the pair of spaced first ribs form a through hole.

[0011] Wherein, the first support part is at least two, and the adjacent first support parts are spaced, a plurality of second ribs are arranged between the adjacent first support parts, and a through hole is formed between the adjacent second ribs.

[0012] Wherein, the second rib is arranged in a staggered manner with the first rib.

[0013] Wherein, the second rib is arranged in parallel with the first rib.

[0014] Wherein, the outer absorption piece comprises a first outer absorption piece and a second outer absorption piece, wherein the first outer absorption piece comprises a first end and a second end, wherein the first end is fixed on the inner support, and the second end extends to the direction of the second outer absorption piece and is stacked on the second outer absorption piece.

[0015] Wherein, the first outer absorption piece is fixed on the first rib.

[0016] Wherein, the second outer absorption piece is fixed on the second rib.

[0017] Wherein, the main absorption piece is wound to form a plurality of layers, SAP is arranged between the adjacent two layers, and the main absorption part is in an extruded state.

[0018] Beneficial Effects: This invention provides a tampon comprising a main body, the main body including: an inner support having a hollow space and a plurality of through holes; a main absorbent portion housed within the hollow space and formed by winding a main absorbent sheet; and an outer absorbent portion including a plurality of outer absorbent sheets; wherein one end of each outer absorbent sheet is fixed to the inner support, and the other end extends toward and overlaps the adjacent outer absorbent sheet, and the main absorbent portion contacts the outer absorbent sheets through the through holes. This arrangement ensures that the main absorbent portion is confined by the inner support, thereby preventing swelling or bulging that could lead to an increase in circumferential volume and discomfort during use. Simultaneously, the formation of a fish-scale-like layered structure allows bodily fluids to flow conveniently downwards, and allows viscous bodily fluids to diffuse inwards along the gaps in the fish-scale-like layered structure, thus accommodating the absorption of high-viscosity or low-viscosity bodily fluids. Attached Figure Description

[0019] Figure 1 Schematic diagram of a tampon according to an embodiment of the present invention; Figure 2 for Figure 1 Schematic diagram of the cross section at point AA; Figure 3 for Figure 2 Enlarged diagram of area B in the middle; Figure 4 This is a three-dimensional schematic diagram of the internal support structure.

[0020] Explanation of component symbols in the illustration: Main body 10; main absorbent part 11; main absorbent sheet 111; inner support 12; center line 1200; hollow space 1201; side wall 1202; first support part 121; first cylindrical part 1211; second cylindrical part 1212; first rib 1213; through hole 1214; second rib 1223; outer absorbent part 13; first outer absorbent sheet 131; first end 1311; second end 1312; second outer absorbent sheet 132; pull-out component 20. Detailed Implementation

[0021] Please refer to Figures 1-4 This invention provides a tampon designed for insertion into a woman's vagina to capture and absorb bodily fluids and prevent these fluids from leaving the vagina and contaminating the skin or clothing. The bodily fluids specifically include menstrual blood, blood, and other bodily fluids.

[0022] The aforementioned tampons include a main body 10 and an extraction component 20. In this embodiment, the extraction component 20 is an extraction cord that is set on the main body and extends outward from the main body. When needed, the user can pull the main body 10 out of the vaginal cavity by grasping the extraction cord. In a specific embodiment, the extraction cord also has a knot for the convenience of the user.

[0023] The main body 10 is generally cylindrical. It can be understood that, in specific embodiments, the cross-section of the main body 10 can be circular, square, polygonal or other suitable shapes. Preferably, the cross-section of the main body 10 is centrally symmetrical and has a center of symmetry, such that the main body 10 has a center line passing through the center of symmetry.

[0024] In addition, the main body 10 includes an insertion end and an extraction end, the extraction rope extending outward from the extraction end, and the main body 10 having a length of about 30 mm to about 60 mm and a width of about 8 mm to about 30 mm. The length specifically refers to the length from the insertion end to the extraction end or from the extraction end to the insertion end along the extension direction of the center line, and the width refers to the maximum transverse cross-sectional dimension perpendicular to the center line.

[0025] The main body 10 includes an inner support 12, a main absorption part 11, and an outer absorption part 13.

[0026] The inner support 12 includes a sidewall 1202 and a hollow space 1201 enclosed by the sidewall 1202. A plurality of through holes 1214 are provided on the sidewall 1202. Specifically, the hollow space 1201 is cylindrical and includes a centerline 1200. It is understood that the centerline 1200 is collinear with the centerline of the main body 10. The inner support 12 includes a plurality of first support portions 121, which are sequentially arranged along the extension direction of the centerline 1200. Each first support portion 121 includes a pair of spaced-apart... The cylindrical portion and a plurality of first ribs 1213 connecting the pair of cylindrical portions are provided. In this embodiment, the pair of cylindrical portions includes a first cylindrical portion 1211 and a second cylindrical portion 1212. The first cylindrical portion 1211 is thin-walled and the second cylindrical portion 1212 is also thin-walled. The two ends of the first ribs 1213 are respectively connected to the first cylindrical portion 1211 and the second cylindrical portion 1212, and a through hole 1214 is formed by the first cylindrical portion 1211, the second cylindrical portion 1212 and the pair of first ribs 1213.

[0027] Furthermore, the first rib 1213 is straight, and the through hole 1214 is a rectangular hole.

[0028] Furthermore, several of the first ribs 1213 are arranged in a circumferential array along the centerline 1200 to form through holes 1214 equal in number to the number of ribs.

[0029] Understandably, the sidewall 1202 is a rigid structure so that the inner support 12 has a stable structure. Preferably, the sidewall 1202 is made of paper with a basis weight of 40g / m² or more. In addition, the first cylindrical part 1211 and the second cylindrical part 1212 have a width of more than 2mm, and the first rib 1213 has a width of more than 3mm.

[0030] Furthermore, adjacent first support portions 121 are spaced apart, and second ribs 1223 are provided between adjacent first support portions 121, and through holes 1214 are formed between adjacent second ribs 1223.

[0031] Furthermore, the second rib 1223 is offset from the first rib 1213. The offset means that the extension of the second rib 1223 toward the first cylindrical portion 1211 is offset from the first rib 1213. More specifically, the extension of the second rib 1223 toward the first cylindrical portion 1211 is located in the area of ​​the through hole 1214.

[0032] Furthermore, the second rib 1223 is arranged parallel to the first rib 1213.

[0033] The main absorbent portion 11 is housed within the hollow space 1201 and is formed by winding a main absorbent sheet 111. The main absorbent sheet 111 is a three-dimensional network structure composed of absorbent fibers connected by appropriate means. The appropriate means of connection can be entanglement, interlacing, bonding or welding.

[0034] Specifically, the absorbent fibers may include, but are not limited to, natural and synthetic fibers. Specifically, they may include polyester; acetate; nylon; and cellulose fibers such as wood pulp, cotton, rayon, viscose, or mixtures of other cellulose fibers. Natural fibers may include, but are not limited to, wool, cotton, flax, hemp, and wood pulp. Wood pulp may include, but is not limited to, softwood pulp and hardwood pulp. Furthermore, the wood pulp may be modified to improve the inherent properties and processability of the fiber, such as through crimping, bending, and / or hardening. Additionally, it is understood that absorbent fibers may include blends of the aforementioned fibers, such as those formed from cellulose fibers like cotton and rayon, and the proportions of the blended fibers can be selected according to actual needs.

[0035] Additionally, the absorbent fibers may have a fiber length from about 5, 10, 15, or 20 mm to about 30, 40, or 50 mm. Simultaneously, the absorbent fibers may have a fiber size from about 15 micrometers to about 28 micrometers, and the absorbent fibers may have a fineness from about 1 or 2 to about 6 denier. Furthermore, the absorbent fibers may have a circular, bilobal, or trilobal cross-sectional configuration, or any other configuration known to those skilled in the art. A bilobal configuration may have a cross-sectional profile resembling a dog bone, while a trilobal configuration may have a cross-sectional profile resembling a "Y".

[0036] Understandably, when the absorbent fibers form a three-dimensional network structure by bonding or welding, the main absorbent sheet 111 also includes heat-fusible fibers dispersed between the absorbent fibers. These heat-fusible fibers have components that can bond or fuse to the absorbent fibers. For ease of description, these heat-fusible fibers are referred to as welded fibers. The welded fibers can be natural fibers or synthetic fibers. The synthetic fibers include, but are not limited to, polyolefins, polyamides, polyesters, rayon, acrylic resins, viscose fibers, regenerated cellulose, etc.

[0037] It is understood that the ratio of absorbent fiber to hot melt fiber can be any suitable ratio. For example, in a specific embodiment, the main absorbent sheet 111 may include from about 70% or 80% by weight to about 90% or 95% by weight of absorbent fiber and from about 5% or 10% by weight to about 20% or 30% by weight of binder fiber.

[0038] Understandably, the main absorbent sheet 111 can be formed through processing methods such as air-laid web formation, combing, wet web formation, needle punching, mechanical entanglement, and hydroentangling.

[0039] Meanwhile, the main absorbent sheet 111 has a basis weight of 10-300 gsm and a thickness of 1-5 mm, and is wound to form the main absorbent part 11. The winding refers to the main absorbent sheet 111 rotating around a rotation center and then wrapping itself in a spiral shape, forming a roughly cylindrical shape after winding. In this embodiment, the main absorbent sheet 111 is wound around the center line. It can be understood that the main absorbent sheet 111 is formed into several layers by winding, and each layer is defined as a complete ring body composed of the main absorbent sheet 111.

[0040] Furthermore, SAP (Super Absorbent Polymer) can be provided between two adjacent layers. SAP, also known as super absorbent resin, refers to a water-absorbing material capable of absorbing tens or even hundreds of times its own weight in water / saline solution. Typically, the super absorbent resin is a salt of polyacrylic acid, such as a suitable polymer of at least one acrylic monomer and a vinyl monomer. In further specific embodiments, it may include, but is not limited to, polysulfethyl acrylate, poly(2-hydroxyethyl acrylate), polyacrylamide, polyacrylic acid and its alkali metal salts, poly(alkali metal salt of acrylate), starch-modified polyacrylic acid and its alkali metal salts, poly(starch-modified alkali metal salt of acrylate), hydrolyzed polyacrylonitrile and its alkali metal salts, poly(hydrolyzed polyacrylonitrile alkali metal salt), poly(vinyl alcohol acrylate alkali metal salt) and its salts and mixtures thereof. The most preferred super absorbent polymer is poly(alkali metal salt of acrylate), such as poly(sodium acrylate).

[0041] In this embodiment, the SAP has a water absorption capacity greater than 50 g / g and a particle size of 50 μm-300 μm. The particle size refers to the average particle size of the SAP. Specifically, in this invention, the particle size of the SAP can be obtained by referring to the "GB / T19077-2016 Particle Size Analysis Laser Diffraction Method", which will not be elaborated here.

[0042] The external absorption section 13 includes a plurality of external absorption sheets, wherein one end of each external absorption sheet is fixed on the inner support 12, and the other end extends toward the adjacent external absorption sheet and is stacked on the adjacent external absorption sheet to form a scale-like stacked shape. The main absorption section 11 contacts the external absorption sheets through the through hole 1214.

[0043] Specifically, the outer absorbent sheet includes a first outer absorbent sheet 131 and a second outer absorbent sheet 132. The first outer absorbent sheet 131 includes a first end 1311 and a second end 1312. The first end 1311 is fixed on the inner support 12, and the second end 1312 extends toward the second outer absorbent sheet 132 and is placed on the second outer absorbent sheet 132 to form a scale-like layered arrangement.

[0044] Furthermore, the first external absorbent sheet 131 is fixed to the first rib 1213.

[0045] Furthermore, the second outer absorbent sheet 132 is fixed on the second rib 1223, so that the position of the first outer absorbent sheet 131 fixed on the inner support 12 is staggered from the position of the second outer absorbent sheet 132 fixed on the inner support 12.

[0046] Understandably, through the above configuration, on the one hand, the main absorbent part 11 is housed within the hollow space 1201 and is defined by the inner support 12. That is, after the main absorbent part 11 absorbs body fluid, the inner support 12 limits the circumferential swelling, thereby preventing swelling protrusion or swelling leading to an increase in circumferential volume and causing discomfort during use. On the other hand, by forming a fish-scale-like layered structure for the outer absorbent sheets, strip-shaped grooves can be naturally formed at the ends of the outer absorbent sheets. Moreover, the extension direction of the strip-shaped grooves is parallel to the centerline 1200, allowing body fluid to flow conveniently downwards. At the same time, the capillaries formed at the ends of the outer absorbent sheets allow body fluid to be quickly absorbed and diffused by the outer absorbent sheets. Meanwhile, the body fluid can be absorbed by the main absorbent part 11 located inside the inner support 12 through the through hole 1214. In addition, the fish-scale-like layered structure forms gaps between adjacent outer absorbent sheets, allowing viscous body fluid to diffuse inwards along the gaps, thereby adapting to the absorption of high-viscosity or low-viscosity body fluids.

[0047] Furthermore, the outer absorbent sheet is formed of a nonwoven material or a perforated membrane. The nonwoven material may include, but is not limited to, materials such as natural fibers, synthetic fibers, or blends of natural and synthetic fibers. Natural fibers may include, but are not limited to, rayon, cotton, wood pulp, flax, hemp, and cannabis. Synthetic fibers may include, but are not limited to, fibers such as polyester, polyolefins, nylon, polypropylene, polyethylene, polyacrylate, vinyl polyacetate, polyacrylate, cellulose acetate, or bicomponent fibers, such as bicomponent polyethylene and polypropylene fibers.

[0048] Furthermore, the opening ratio of the through hole 1214 on the inner support 12 is greater than or equal to 70%, so that the main absorption part 11 can have a larger contact area with the outer absorption part 13.

[0049] Furthermore, the main absorption section 13 is compressed within the hollow space 120.

[0050] Further research revealed that by using the above-mentioned setup and the main body only employing the same setup as the main absorbent section with a 3mm external groove, discomfort caused by unexpected external bulges or protrusions due to SAP decreased by 18.7%, while the absorption rate of high-viscosity menstrual blood increased by 7.5%.

[0051] 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. A layered sanitary tampon based on an internal support, characterized in that, The subject includes: The inner support has a hollow space and several through holes; The main absorbent section is housed within the hollow space and formed by winding a main absorbent sheet. The external absorption section includes several external absorption sheets; In this configuration, one end of each outer absorber sheet is fixed to the inner support, and the other end extends toward the adjacent outer absorber sheet and is stacked on the adjacent outer absorber sheet. Furthermore, the main absorber portion contacts the outer absorber sheet through a through hole.

2. The tampon as described in claim 1, characterized in that, The inner support includes a centerline and a plurality of first support portions arranged along the extension direction of the centerline. Each first support portion includes a pair of spaced-apart cylindrical portions and a plurality of first ribs connecting the pair of cylindrical portions.

3. The tampon as described in claim 2, characterized in that, A pair of cylindrical portions includes a first cylindrical portion and a second cylindrical portion, both of which are thin-walled cylindrical. The two ends of the first rib are respectively connected to the first cylindrical portion and the second cylindrical portion, and the first cylindrical portion, the second cylindrical portion and the pair of spaced first ribs surround to form a through hole.

4. The tampon as described in claim 3, characterized in that, There are at least two first support parts, and adjacent first support parts are spaced apart. Several second ribs are provided between adjacent first support parts, and through holes are formed between adjacent second ribs.

5. The tampon as described in claim 4, characterized in that, The second rib is offset from the first rib.

6. The tampon as described in claim 5, characterized in that, The second rib is arranged parallel to the first rib.

7. The tampon as described in claim 5, characterized in that, The external absorbent sheet includes a first external absorbent sheet and a second external absorbent sheet. The first external absorbent sheet includes a first end and a second end. The first end is fixed on the inner support, and the second end extends toward the second external absorbent sheet and rests on the second external absorbent sheet.

8. The tampon as described in claim 7, characterized in that, The first external absorbent sheet is fixed to the first rib.

9. The tampon as described in claim 8, characterized in that, The second external absorbent sheet is fixed to the second rib.

10. The tampon as described in claim 9, characterized in that, The main absorbent sheet is wound into several layers, with SAPs disposed between adjacent layers, and the main absorbent part is in a compressed state.

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