Tampon and preparation method

Abstract

The embodiment of the invention provides a tampon which comprises a main body with a middle hole and a pulling-out component, the main body comprises a plurality of stacked absorption sheet bodies, each absorption sheet body comprises a base body and an inner hole formed in the base body, the inner holes of the absorption sheet bodies are communicated to form the middle hole, and the pulling-out component is arranged in the middle hole. At least one part of the extraction part penetrates through the middle hole and is arranged on the main body in a sleeving mode, the extraction part is used for fixing the stacked absorption sheets, through the arrangement, high-viscosity body fluid can be diffused along the holes between the layers, low-viscosity body fluid can be rapidly absorbed and diffused by the absorption sheets, and the absorption effect of the absorption sheets is improved. Compared with a conventional winding type, the whole absorption and diffusion rate is greatly improved, meanwhile, when body fluid is absorbed, the absorption sheet body is mainly swelled in the axial direction and swelled in the radial direction, the use comfort of a user is greatly improved, and the embodiment of the invention further provides a preparation method for preparing the tampon.

Description

Technical Field

[0001] The present invention relates to a tampon and a preparation method thereof. Background Art

[0002] Menstrual tampons for intravaginal use have been widely used because they are hygienic, non-bulky and comfortable to wear.

[0003] Existing tampons are usually made of absorbent sheets wound into a cylindrical shape, and are also provided with external grooves or channels on the outside to increase the surface of the tampon for absorption, such as the structures and forms shown in documents such as CN1531415A, DE102005050514A1, EP0149155A2, and US8834439B2.

[0004] Due to the form of winding and radial compression, current tampons have the following two problems during use: first, its radially compressed structure and the multi-layer structure formed in the radial direction make it difficult for body fluids to diffuse radially, resulting in a low absorption rate. In particular, for the high-viscosity menstrual blood of some people, the absorption rate is even lower, causing inconvenience in use. Second, this wound and radially compressed structure causes the tampon to expand in the radial direction after absorbing body fluids, causing discomfort during use.

[0005] Therefore, a new technical solution is needed to solve the above technical problems. Summary of the Invention

[0006] The present invention provides a tampon to solve the above technical problems.

[0007] A tampon comprises a main body with a central hole and a pull-out component, wherein the main body comprises a plurality of stacked absorbent sheets, the absorbent sheets comprising a base and an inner hole provided on the base, the inner holes of the absorbent sheets being connected to form the central hole, and at least a portion of the pull-out component passes through the central hole and is sleeved on the main body to fix the stacked absorbent sheets.

[0008] The absorbent sheet forming the main body has a thickness that gradually decreases from the inner hole toward the edge, and a density that gradually increases.

[0009] Wherein, the main body includes an insertion end, the insertion end is in a cone shape, and the cone angle of the cone is 12°-30°.

[0010] Among them, the pulling-out component includes a ring-shaped portion sleeved on the main body and a grasping portion located on the outside of the main body for the user to grab and pull. The ring-shaped portion includes a penetration section penetrated in the middle hole, a wrapping section located on the outside of the main body and a joint portion that consolidates the penetration section and the wrapping section. The penetration section and the wrapping section are combined to form a ring-shaped portion.

[0011] Wherein, the main body further includes a receiving groove arranged on the side, and at least a part of the wrapping section is located in the receiving groove.

[0012] The present invention also provides a method for preparing a tampon, comprising the following steps: S100: forming an absorbent sheet, wherein the absorbent sheet includes an inner hole; S200: stacking absorbent sheets to form a main body, and aligning and connecting the inner holes of the absorbent sheets to form a central hole; S300: inserting a pull-out component into the middle hole.

[0013] In step S200, the absorbent sheets are stacked through a positioning seat, the positioning seat includes a base and a center column, wherein the center column is vertically arranged on the base, the center column includes a center hole, and the absorbent sheets are stacked one by one in the form of inner holes arranged on the center column, and the inner holes of each absorbent sheet are aligned and connected to form a center hole.

[0014] In step S300, the extraction component is inserted into the middle hole in the following steps: S301: The extraction component is passed through the central hole in a manner of air flow guidance; S302: withdrawing from the positioning seat, and the withdrawing component forms a penetration section and a wrapping section; S303: combining the penetration section and the wrapping section to form a joint portion.

[0015] Before step 302 , the method further includes: applying pressure to the main body along the length direction of the main body by a pressure plate.

[0016] Wherein, the pressure plate includes a tapered portion and a central through hole. When the pressure plate is used to apply pressure to the main body along the length direction of the main body, the central through hole is configured to correspond to the central column.

[0017] Beneficial effects: An embodiment of the present invention provides a tampon, comprising a main body with a central hole and a pull-out component, wherein the main body is formed by stacking a plurality of absorbent sheets, the absorbent sheet comprising a base and an inner hole arranged on the base, the inner holes of each absorbent sheet are connected to form the central hole, at least a portion of the pull-out component passes through the central hole and is sleeved on the main body, for fixing the stacked absorbent sheets, through this arrangement, high-viscosity body fluids can diffuse along the pores between layers, and low-viscosity body fluids can be quickly absorbed and diffused by the absorbent sheet, so that the overall absorption and diffusion rate is greatly improved compared with the conventional winding type, and at the same time, when the body fluid is absorbed, the absorbent sheet mainly swells in the axial direction, and the radial swelling is small, so that the user comfort is greatly improved. An embodiment of the present invention also provides a preparation method for the tampon. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic cross-sectional view of a tampon according to an embodiment of the present invention; Figure 2 for Figure 1 Schematic diagram of the absorbent sheet; Figure 3-Figure 9 Schematic diagram of the process for preparing tampons.

[0019] Description of component symbols: Main body 10; absorbent sheet 11; absorbent sheet 110; base 111; inner hole 112; center hole 12; extraction component 20; annular sleeve portion 21; penetration section 211; wrapping section 212; coupling portion 213; gripping portion 22; sleeve 30; positioning seat 40; chassis 41; center column 42; center hole 420; pressing plate 50; center through hole 51; tapered portion 52. DETAILED DESCRIPTION

[0020] Please refer to Figure 1-Figure 2 An embodiment of the present invention provides a tampon, which is designed to be inserted into the female vaginal cavity to intercept and absorb body fluids and prevent these body fluids from leaving the vaginal cavity and contaminating the skin or clothing. The body fluids specifically include menstruation, blood and other body fluids.

[0021] The tampon comprises a main body 10 and a pull-out component 20, wherein the main body 10 is substantially cylindrical. It is understandable that the cross-section of the main body 10 can be specifically circular, square, polygonal or other suitable shapes.

[0022] In addition, the main body 10 includes an insertion end and a withdrawal end, and the main body 10 has 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 withdrawal end or from the withdrawal end to the insertion end in the extension direction along the center line, and the width refers to the maximum transverse cross-sectional dimension perpendicular to the center line.

[0023] The main body 10 includes a central hole 12, which extends from the insertion end to the withdrawal end. At the same time, in this embodiment, the central hole 12 is located at the center of the main body 10. More specifically, the axis of the central hole 12 is collinear with the axis of the main body 10.

[0024] The main body 10 includes a plurality of stacked absorbent sheets 11 . The absorbent sheets 11 include a base 111 and an inner hole 112 provided on the base 111 . The inner holes 112 of the absorbent sheets 11 are connected to form the middle hole 12 .

[0025] Specifically, the absorbent sheet 11 is a three-dimensional network structure mainly composed of absorbent fibers connected by appropriate means, and the absorbent sheet 11 is generally in the form of a thin sheet. The appropriate connection can be entanglement, interweaving, bonding or welding.

[0026] Specifically, the absorbent fibers may include, but are not limited to, natural fibers and synthetic fibers, specifically, polyester; acetate; nylon; cellulose fibers, such as a mixture of wood pulp, cotton, rayon, viscose or 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, coniferous wood pulp and hardwood wood pulp. At the same time, the wood pulp may also be modified to improve the inherent properties of the fiber and its processability, such as by curling, bending and / or hardening. In addition, it is understood that the absorbent fibers may include a blend of the various fibers mentioned above, such as, may be formed from cellulose fibers such as cotton and rayon, and the ratio of the blended fibers may be selected according to actual needs.

[0027] In addition, the absorbent fibers may have a fiber length of from about 5, 10, 15, or 20 mm to about 30, 40, or 50 mm. Furthermore, the absorbent fibers may have a fiber size of from about 15 microns to about 28 microns, and the absorbent fibers may have a denier of 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 that looks like a dog bone, while a trilobal configuration may have a cross-sectional profile that looks like a "Y."

[0028] It can be understood that when the absorbent fibers are formed into a three-dimensional network structure by bonding or welding, the absorbent sheet 11 also includes heat-fusible fibers dispersed between the absorbent fibers. These heat-fusible fibers have components that will bond or fuse to the absorbent fibers. For the convenience of description, these heat-fusible fibers are referred to as welding fibers. The welding fibers can be natural fibers or synthetic fibers, wherein the synthetic fibers include but are not limited to polyolefins, polyamides, polyesters, rayon, acrylic resins, viscose fibers, regenerated cellulose, etc.

[0029] It will be appreciated that the ratio of absorbent fibers to hot-melt fibers may be any suitable ratio. For example, in a specific embodiment, the absorbent sheet 11 may comprise from about 70% or 80% to about 90% or 95% by weight of absorbent fibers and from about 5% or 10% to about 20% or 30% by weight of binder fibers.

[0030] It is understandable that the absorbent sheet 11 can be formed by processing methods such as air laying, carding, wet laying, needle punching, mechanical entanglement, hydroentanglement, etc.

[0031] At the same time, the absorbent sheet 11 has a basis weight of 10 to 300 gsm and a thickness of 0.5 to 5 mm. The absorbent sheet 11 is stacked layer by layer to form the main body 10. Preferably, each absorbent sheet 11 has the same size and thickness and is stacked layer by layer to form a columnar shape. At the same time, the inner holes 112 of each absorbent sheet 11 are aligned and connected to form a central hole 12.

[0032] It can be understood that by stacking the absorbent sheet 11 layer by layer, on the one hand, when the body fluid flows from the insertion end to the withdrawal end along the central hole 12, since there are relatively large pores between the layers, and the absorbent sheet 11 itself has relatively small pores, the high-viscosity body fluid can diffuse along the pores between the layers, and the low-viscosity body fluid can be quickly absorbed and diffused by the absorbent sheet 11, so that the overall absorption and diffusion rate is increased by an average of more than 45% compared with the conventional wound absorbent core of the same size. On the other hand, when the body fluid diffuses from the central hole 12 to the outside, the absorbent sheet 11 mainly swells in the axial direction (i.e., the length direction), and the radial (i.e., the width direction) swelling rate is less than 5%, which greatly improves the user's comfort, especially when there is a large amount of body fluid or multiple menstrual blood discharges, the discomfort is reduced by 17%.

[0033] Furthermore, the thickness of the absorbent sheet 11 forming the main body 10 gradually decreases from the inner hole 112 toward the edge, and its density gradually increases, so that the density of the area of the main body 10 adjacent to the middle hole 12 is less than the density of the area outside the main body 10. Through this arrangement, the insertion end of the main body 10 is cone-shaped. On the one hand, it is convenient for the main body 10 to be inserted into the vaginal cavity. On the other hand, the density at the center is small and the density at the outside is large, so that the diameter of the capillary tube on the outside is smaller than the diameter of the capillary tube at the center. For menstrual blood or similar high-viscosity body fluids, the body fluid can diffuse smoothly during the diffusion process from the center to the outside without being blocked and affecting absorption and diffusion.

[0034] Furthermore, when the insertion end is in a conical shape, the cone angle is 12°-30°. In this case, the density on the outside is 15-30% higher than the density at the center. In this arrangement, the absorption and diffusion of high-viscosity body fluids and the absorption and diffusion of low-viscosity body fluids are taken into account at the same time. Compared with the case where the cone shape is not arranged, the absorption rate is further increased by 13.5%. At the same time, when the cone angle is less than 12°, the insertion resistance increases, and when it is greater than 30°, the density gradient effect is weakened.

[0035] At least a portion of the pull-out component 20 passes through the middle hole 12 and is sleeved on the main body 10 to fix the stacked absorbent sheet 110. Specifically, in this embodiment, the pull-out component 20 can be a pull-out rope, including a loop portion 21 sleeved on the main body 10 and a grasping portion 22 located on the outside of the main body 10 for the user to grab and pull. It can be understood that the user can remove the main body 10 from the vaginal cavity by pulling the grasping portion 22.

[0036] At the same time, the annular portion 21 includes a penetration section 211 penetrated in the central hole 12, a wrapping section 212 located on the outside of the main body 10, and a joint portion 213 for consolidating the penetration section 211 and the wrapping section 212. The penetration section 211 and the wrapping section 212 are combined to form an annular shape through the combination of the joint portion 213. It can be understood that by forming an annular shape, on the one hand, the stacked absorption sheet 11 can be formed into a whole and will not loosen, especially after the absorption sheet 11 absorbs menstrual blood, it can maintain its shape through the fixation of the annular portion 21. On the other hand, in the process of pulling the main body 10, the annular portion 21 can apply force to the main body 10, so that the main body 10 can be pulled out smoothly.

[0037] Furthermore, the coupling portion 213 may be formed with a knot, so that the penetration section 211 and the wrapping section 212 are fixed in place through the knot.

[0038] Furthermore, the coupling portion 213 is fixed by bonding or welding.

[0039] Furthermore, the main body 10 also includes a receiving groove (not shown) arranged on the side, and at least a portion of the wrapping section 212 is located in the receiving groove. By providing the receiving groove and arranging the wrapping section 212 in the receiving groove, the relatively hard pull-out component 20 is prevented from being exposed to the outside and causing discomfort in use.

[0040] Furthermore, the main body 10 includes a cover 30 that is disposed over the main body 10 to further prevent discomfort caused by the wrapping section 212. The cover 30 covers the main body 10 and secures its shape. Furthermore, the cover 30 prevents the fibers comprising the main body 10 from directly contacting the inner wall of the female vaginal cavity. Furthermore, the cover 30 reduces the chance of parts or components (e.g., fibers) of the main body 10 falling off the main body 10, or further prevents such a situation from occurring.

[0041] Please refer to Figure 3-Figure 9 , Figure 3-Figure 9 The preparation process of the tampon is shown, and the tampon of the present invention is further described below in conjunction with the preparation method.

[0042] S100 : forming an absorbent sheet 11 , wherein the absorbent sheet 11 includes an inner hole 112 .

[0043] Specifically, the absorbent sheet 11 may be formed by directly forming the absorbent fiber into the absorbent sheet 11 or by forming the absorbent fiber into the absorbent sheet 110 and then cutting the absorbent sheet 110 into the absorbent sheet 110 .

[0044] The process of directly forming the absorbent sheet 11 from the absorbent fibers specifically includes: S101: Defibrating absorbent fiber raw materials into discrete fibers; S102: forming the discrete fibers into an absorbent sheet 11 in a mold; S103: Demolding to form the absorbent sheet 11.

[0045] Among them, the discrete fibers are formed into an absorbent sheet 11 in a mold through a molding device, which includes a molding box, a molding cylinder connected to a negative pressure, and a transfer roller for transferring the absorbent sheet 11 from the molding cylinder to a conveying device. A mold with a structure corresponding to the shape of the absorbent sheet 11 is fixed on the molding cylinder, and the discrete fibers are spread onto the mold through the molding box to form the absorbent sheet 11.

[0046] After the absorbent fibers are formed into the absorbent sheet 110, the absorbent sheet 11 is cut from the absorbent sheet 110 to form the absorbent sheet body 11, which specifically includes: S111: defibrillating the absorbent fiber raw material into discrete fibers; S112: forming a continuous absorbent sheet 110 by air-laying the discrete fibers; S113: The absorbent sheet 110 is cut by a cutter assembly to form the absorbent sheet body 11.

[0047] It can be understood that the cutter assembly includes a cutter corresponding to the shape of the absorbent sheet 11 , thereby cutting out the absorbent sheet 11 from the absorbent sheet 110 .

[0048] The absorbent sheet can also be formed by carding, wet-laid web formation, needle punching, mechanical entanglement, hydroentanglement, and the like.

[0049] S200 : stacking the absorbent sheets 11 to form the main body 10 , and aligning the inner holes 112 of the absorbent sheets 11 to connect to form the middle hole 12 .

[0050] In this embodiment, the absorbent sheet 11 is stacked by a positioning seat 40, and the positioning seat 40 includes a chassis 41 and a center column 42, wherein the chassis 41 includes a reference plane, and the center column 42 includes a central axis, and the central axis is perpendicular to the reference plane, so that the center column 42 is arranged on the chassis 41 in a vertical manner. At the same time, the center column 42 includes a center hole 420, so that the center column 42 is tubular, and the absorbent sheet 11 is stacked one by one in the form of an inner hole 112 arranged on the center column 42, so that the inner holes 112 of each absorbent sheet 11 are aligned and connected to form a middle hole 12.

[0051] S300 : inserting the extraction component 20 into the middle hole 12 .

[0052] Specifically, the following steps are included: S301: The extraction component 20 is passed through the central hole 420 in a manner of airflow guidance.

[0053] It can be understood that the airflow guidance specifically refers to that when one end of the pull-out component 20 is fixed, the flow direction of an airflow is along the extension direction of the center hole 420, and the other end of the pull-out component 20 moves along with the airflow. When the airflow is aligned with the center hole 420, the pull-out component 20 moves along the extension direction of the center hole 420 with the airflow and passes through the center hole 420.

[0054] S302 : withdrawing from the positioning seat 40 and forming the penetrating section 211 and the wrapping section 212 .

[0055] After the pull-out component 20 completely passes through the center hole 420 , the main body 10 is fixed and withdrawn from the positioning seat 40 , so that the pull-out component 20 is located in the center hole 12 . It can be understood that the pull-out component 20 located in the center hole 12 is the penetration section 211 .

[0056] S303 : combining the penetrating section 211 and the wrapping section 212 to form a combined portion 213 .

[0057] It can be understood that the joint 213 can be a knot.

[0058] Furthermore, before step 302, the method further includes: S301a: applying pressure to the main body 10 along the length direction of the main body 10 via a pressing plate 50 .

[0059] The pressing plate 50 applies pressure to the main body 10 so as to reduce the gaps between the absorbent sheets 11 stacked on the main body 10 and improve the integrity of the main body 10 to prevent it from spreading after absorbing menstrual blood.

[0060] Furthermore, the pressure plate 50 includes a conical portion 52 and a central through hole 51, which is used to make the insertion end present a conical shape. It can be understood that the central through hole 51 is configured to correspond to the central column 42. On the one hand, it is used to enable the pressure plate 50 to smoothly apply pressure to the main body 10, that is, to make room for the central column 42. On the other hand, a guiding effect is formed by the central column 42 and the central through hole 51, so that the main body 10 can be pressed more stably.

[0061] It can be understood that the density gradient is achieved by differentially compressing the absorbent sheet 11 through the tapered portion 52 of the pressing plate 50 .

[0062] Furthermore, when the main body 10 is compressed by the pressing plate 50, the compression rate is 20-35%, so that on the one hand the main body 10 is formed into a suitable length size, and on the other hand, suitable pores are formed between the absorbent sheets 11 in the main body 10 and in the absorbent sheets 11 themselves, while at the same time preventing the absorbent sheets 11 from being too dense and causing a decrease in absorption performance.

[0063] The above description is only an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A tampon, characterized in that: The invention comprises a main body with a central hole and a pull-out component, wherein the main body comprises a plurality of stacked absorbent sheets, the absorbent sheets comprise a base and an inner hole arranged on the base, the inner holes of the absorbent sheets are connected to form the central hole, and at least a portion of the pull-out component passes through the central hole and is sleeved on the main body to fix the stacked absorbent sheets.

2. The tampon according to claim 1, wherein The absorbent sheet forming the main body has a thickness that gradually decreases from the inner hole toward the edge, and a density that gradually increases.

3. The tampon according to claim 2, wherein The main body includes an insertion end, and the insertion end is in a cone shape, and the cone angle of the cone is 12°-30°.

4. The tampon according to claim 1, wherein The pull-out component includes a ring portion that is sleeved on the main body and a grasping portion located on the outside of the main body for the user to grab and pull. The ring portion includes a penetration section that is penetrated into the central hole, a wrapping section located on the outside of the main body, and a joint portion that consolidates the penetration section and the wrapping section. The penetration section and the wrapping section are combined to form a ring shape.

5. The tampon according to claim 4, wherein The main body further comprises a receiving groove arranged on the side, and at least a portion of the wrapping section is located in the receiving groove.

6. A method for preparing a tampon, characterized in that: The steps include: S100: forming an absorbent sheet, wherein the absorbent sheet includes an inner hole; S200: stacking absorbent sheets to form a main body, and aligning and connecting the inner holes of the absorbent sheets to form a central hole; S300: inserting a pull-out component into the middle hole.

7. The preparation method according to claim 6, wherein In step S200, the absorbent sheets are stacked through a positioning seat, wherein the positioning seat includes a base and a center column, wherein the center column is vertically arranged on the base, and the center column includes a center hole. The absorbent sheets are stacked one by one in the form of inner holes arranged on the center column, and the inner holes of each absorbent sheet are aligned and connected to form a center hole.

8. The preparation method according to claim 7, wherein In step S300, the extraction component is inserted into the middle hole in the following steps: S301: The extraction component is passed through the central hole in a manner of air flow guidance; S302: withdrawing from the positioning seat, and the withdrawing component forms a penetration section and a wrapping section; S303: combining the penetration section and the wrapping section to form a joint portion.

9. The preparation method according to claim 8, wherein Before step 302 , the method further includes: applying pressure to the main body along the length direction of the main body by a pressing plate.

10. The preparation method according to claim 9, characterized in that The pressure plate includes a tapered portion and a central through hole. When the pressure plate is used to apply pressure to the main body along the length direction of the main body, the central through hole is configured to correspond to the central column.

Images