Sanitary underpants

Abstract

The utility model relates to a sanitary underpants, including body, basic core and replacement core, the body is comfortable breathable disposable underpants, and the basic core and replacement core all are the absorption core of latex material containing SAP granule in the inside, and the basic core is located in the lower part in the body, and the basic core is equipped with the limiting structure, and the replacement core can manually replace and be equipped in the limiting structure of basic core. The sanitary underpants of the utility model can use the disposable underpants of pure cotton material as the body, and the comfort degree is higher, and safe and sanitary, and need not to wash, and the core absorption performance is good, can better lock the liquid, prevents the side leakage, and the overall thickness is thin, and the wearing is comfortable and ventilative, the sanitary underpants of the utility model can configure multiple replacement cores, and a set of sanitary underpants can satisfy the use demand of user a day, can greatly reduce the use cost of sanitary underpants.

Description

Technical Field

[0001] This utility model relates to the field of underwear technology, and in particular to a sanitary underwear for women to use during menstruation. Background Technology

[0002] Women need to use sanitary napkins during menstruation. Current sanitary napkins are usually glued to underwear. These napkins have poor breathability, the glue can irritate the skin, and may stain the underwear. Furthermore, heavy menstrual flow can lead to leakage, further soiling the underwear and making it difficult to wash. With the fast pace of life, some working women and adolescent girls may not have time to wash their underwear due to work or study pressure. Infrequent washing or using a washing machine to wash underwear can negatively impact health.

[0003] Patent CN2204590Y discloses a sanitary napkin underwear. This solution sews the sanitary napkin onto the bottom inside of a non-woven fabric body, with the shape of the sanitary napkin matching the bottom shape of the body. However, both the sanitary napkin and the underwear can only be used once, resulting in high costs. Furthermore, the sanitary napkin uses ordinary paper, which still has relatively poor breathability and comfort during use, thus requiring improvement. Summary of the Invention

[0004] The purpose of this invention is to address the problems existing in the prior art by providing a low-cost, comfortable sanitary underwear that can be used for one to two days with several replacement cores.

[0005] The first type of sanitary underwear of this utility model includes a main body, a basic core, and a replacement core. The main body is a comfortable and breathable disposable underwear. Both the basic core and the replacement core are absorbent cores made of latex material containing SAP particles. The basic core is located in the lower middle part of the main body. The basic core is provided with a limiting structure. The replacement core is manually replaceable and is located within the limiting structure of the basic core.

[0006] In the above design, the base core is fixedly disposed in the lower middle part of the main body. This arrangement ensures that the position of the base core within the main body is fixed, preventing displacement of the base core during movement.

[0007] In the above solution, the limiting structure is a recessed replacement core groove located in the middle of the base core. The shape of the replacement core corresponds to the shape of the replacement core groove, and the replacement core is embedded within the replacement core groove. By setting the replacement core groove, the replacement core can be limited and fixed, which facilitates the connection between the replacement core and the base core, effectively prevents the replacement core from moving relative to the base core, and eliminates the need for irritating substances such as glue, thus preventing skin irritation to the user. In this solution, the thickness of the base core is relatively large, usually greater than the thickness of the replacement core groove. For example, the thickness of the base core can be designed to be twice the thickness of the replacement core. When the replacement core is not in use, the replacement core groove in the middle of the base core can better absorb liquid, while the outer part of the replacement core groove can better prevent liquid leakage.

[0008] In the above solution, the limiting structure is a raised limiting edge located in the middle of the base core. The shape of the limiting edge corresponds to the shape of the replacement core, and the replacement core is embedded within the limiting edge. This design eliminates the need to thicken the base core; simply setting a raised limiting edge on the surface of the base core is sufficient to limit and fix the replacement core. The structure is simpler, and the base core is thinner, resulting in better air permeability. Furthermore, when the replacement core is not used and liquid is absorbed solely through the base core, the raised limiting edge also helps prevent side leakage.

[0009] In the above scheme, the replacement core is cartoon-shaped. In practical applications, the shape of the replacement core can be set as needed, and the cartoon character can be selected based on popular cartoon characters. This design allows for an irregularly shaped positioning surface between the replacement core slot and the replacement core, which not only makes the connection between the replacement core and the fixed core more stable but also makes the shape of the replacement core more interesting, appealing to women and adolescent girls.

[0010] In the above solution, the bottom of the replacement core is provided with a connector, through which the replacement core is fixedly connected to the base core. This design makes the connection between the replacement core and the base core more stable. The connector can be selected as needed; for example, it can be Velcro or adhesive strips. Velcro can be single-sided or double-sided. Single-sided Velcro needs to be pre-fixed to the bottom surface of the replacement core, while double-sided Velcro can connect the replacement core and the base core from both sides respectively. If adhesive strips are used, the replacement core and the base core can be bonded together. The adhesive strips can be made of natural materials to avoid irritating the user's skin.

[0011] In the above scheme, the edge of the base core is provided with a leak-proof protrusion. By setting the protrusion, the leak-proof function of the base core can be improved. The protrusion can be designed at the left and right sides of the base core, or it can be designed at the entire edge of the base core.

[0012] Another type of sanitary underwear according to this utility model includes a main body, a basic core, and a replacement core. The main body is a comfortable and breathable disposable underwear. Both the basic core and the replacement core are absorbent cores made of latex material containing SAP particles. The basic core is located in the lower middle part of the main body. The bottom of the replacement core is provided with a connector, and the replacement core is fixedly connected to the basic core through the connector.

[0013] In the above design, the base core is fixedly connected to the lower middle part of the main body. This arrangement ensures that the position of the base core within the main body is fixed, preventing displacement of the base core during movement.

[0014] In the above scheme, the edge of the base core is provided with a leak-proof protrusion. By setting the protrusion, the leak-proof function of the base core can be improved. The protrusion can be designed at the left and right sides of the base core, or it can be designed at the entire edge of the base core.

[0015] This invention has the following positive effects: 1) The sanitary underwear of this invention can be made of a breathable and comfortable material, such as existing disposable cotton underwear. This makes the sanitary underwear more comfortable to use, and it can be changed daily, with used underwear discarded directly without washing. This greatly meets the needs of adolescent girls and working women. 2) Both the basic core and the replacement core of this sanitary underwear use absorbent cores made of latex material containing SAP particles. Compared with existing sanitary napkins, it offers better comfort and breathability, and better locks in liquid, preventing side leakage and avoiding embarrassment for women during menstruation. 3) Both the basic core and the replacement core of this sanitary underwear use absorbent cores made of latex material containing SAP particles, resulting in better liquid absorption and breathability. Even when the replacement core and the basic core are used together, the overall thickness is relatively thin, ensuring comfortable and breathable wear. 4) The sanitary underwear of this utility model is designed with a basic core and a replacement core. The number of replacement cores can be designed according to needs. For example, a set of sanitary underwear can be equipped with 1-5 replacement cores. The replacement cores can be used first, and the basic core can be used last. After the basic core is used up, it can be discarded directly. Compared with the existing technology of sewing sanitary napkins onto underwear, a set of sanitary underwear of this utility model can meet the user's needs for one to two days, which can greatly reduce the cost of using sanitary underwear. Attached Figure Description

[0016] Figure 1 This is a structural diagram of the sanitary underwear of this utility model.

[0017] Figure 2a This is a structural diagram of the disassembled sanitary underwear of Embodiment 1 of this utility model.

[0018] Figure 2b for Figure 2a A schematic diagram of the AA-direction section.

[0019] Figure 2c This is a schematic diagram of the structure of the sanitary underwear of Embodiment 1 of this utility model when no replacement core is installed on the basic core.

[0020] Figure 3a This is a structural diagram of the disassembled sanitary underwear of Embodiment 2 of this utility model.

[0021] Figure 3b for Figure 3a Schematic diagram of the BB-direction section.

[0022] Figure 3c This is a schematic diagram of the structure of the sanitary underwear of Embodiment 2 of this utility model when the replacement core is not installed on the basic core.

[0023] Figure 4a This is a structural diagram of the disassembled sanitary underwear of Embodiment 3 of this utility model.

[0024] Figure 4b for Figure 4a A schematic diagram of the CC-direction section.

[0025] Figure 4c This is a schematic diagram of the structure of the sanitary underwear of Embodiment 3 of this utility model when the replacement core is not installed on the basic core.

[0026] Figure 5a This is a structural diagram of the disassembled sanitary underwear of Embodiment 4 of this utility model.

[0027] Figure 5b for Figure 5a Schematic diagram of the DD section.

[0028] Figure 5c This is a schematic diagram of the structure of the sanitary underwear of Embodiment 4 of this utility model when the replacement core is not installed on the basic core.

[0029] Figure 6a This is a structural diagram of the disassembled sanitary underwear of Embodiment 5 of this utility model.

[0030] Figure 6b for Figure 6aEE-directed sectional view diagram.

[0031] Figure 6c This is a schematic diagram of the structure of the sanitary underwear of Embodiment 5 of this utility model when the replacement core is not installed on the basic core.

[0032] Figure 7a This is a structural diagram of the disassembled sanitary underwear of Embodiment 6 of this utility model.

[0033] Figure 7b for Figure 7a A schematic diagram of the FF section.

[0034] Figure 7c This is a schematic diagram of the structure of the sanitary underwear of Embodiment 6 of this utility model when the replacement core is not installed on the basic core.

[0035] The reference numerals in the figure are: body 1, base core 2, protruding edge 21, replacement core groove 22, limiting edge 23, replacement core 3, and connector 4. Detailed Implementation

[0036] The technical solution of this utility model will be clearly and completely described below through embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0037] Example 1

[0038] like Figure 1 As shown, the sanitary underwear of this utility model includes a main body 1, a basic core 2, and a replacement core 3.

[0039] The main body 1 can be made of pure cotton disposable underwear, or other comfortable and breathable disposable underwear materials, such as other commonly used underwear materials, such as lyocell fiber fabric, cotton linen fabric, or ice silk fabric, etc.

[0040] The shape of the main body 1 can be selected as needed, for example, it can be selected as follows: Figure 1 The underwear shown is narrower in the front than in the back, or you can choose underwear with similar widths in the front and back.

[0041] Both the base core 2 and the replacement core 3 can be absorbent cores made of latex material containing SAP particles, such as the absorbent core disclosed in patent publication number CN 118267238 A. This absorbent core has advantages such as softness, breathability, and strong absorbency. When made into a base core, it can be thinner than existing sanitary napkins, making it more comfortable to wear as underwear and providing better leak-proof performance.

[0042] like Figure 2a , Figure 2b , Figure 2c As shown, the shape of the basic core 2 can be designed as needed, for example, it can be designed as follows: Figure 2a The shape shown is narrow in the front and wide in the back. The left and right sides of the base core 2 are designed as arc-shaped and curved inwards, which are adapted to the shape of the crotch of the underwear.

[0043] The basic core 2 is sheet-shaped, and its thickness can be selected as needed.

[0044] The base core 2 does not need to be fixedly connected to the main body because the outer surface of the base core 2 is made of latex material, which has a strong adhesion to the disposable underwear made of pure cotton. When the base core 2 is placed inside the disposable underwear for wearing, the base core 2 is not easy to slip. Moreover, the sanitary underwear can fit the body closely and is not easy to slip when worn. Therefore, the base core 2 can be used normally even if it is not fixedly connected to the main body 1.

[0045] Preferably, the base core 2 is fixedly connected to the lower middle part of the inner side of the body 1, and the front and rear sides of the base core 2 extend to a suitable height on the body 1. The base core 2 can be sewn and fixed to the body 1, or fixed to the body 1 with hot melt adhesive or other non-irritating adhesive, or fixed and connected in other safe and non-irritating ways.

[0046] A limiting structure is provided on the base core 2. The limiting structure is a recessed replacement core groove 22 located in the middle of the base core 2. The shape of the replacement core 3 corresponds to the shape of the replacement core groove 22. The replacement core 3 is placed in the replacement core groove 22, and the replacement core 3 is limited by the replacement core groove 22. When the sanitary underwear is worn on the human body, it can better limit the replacement core 3 and make the replacement core 3 fit the human body better.

[0047] The base core 2 can be a single piece or a base core composed of several stacked cores. When manufacturing the base core, a corresponding foaming mold can be used to create a replacement core groove on the surface of the formed base core. Alternatively, a base core composed of several stacked cores can be used; in this case, only the corresponding parts of the upper core layers need to be cut to shapes corresponding to the replacement core grooves.

[0048] The replacement core 3 can be a one-piece molded sheet or a multi-layered sheet. Its shape corresponds to the shape of the replacement core groove 22. The thickness of the replacement core 3 can be selected as needed, and can be greater than, equal to or less than the depth of the replacement core groove 22.

[0049] To further improve the positional stability of the replacement core 3 within the base core slot, the replacement core 3 and the base core slot 22 can be connected by a connector 4. The connector 4 can be selected as needed, for example, using Velcro or adhesive strips. The Velcro can be single-sided or double-sided. Single-sided Velcro needs to be pre-fixed to the bottom surface of the replacement core, while double-sided Velcro can connect the replacement core and the base core on both sides respectively. If adhesive strips are used, the replacement core and the base core can be bonded together. The adhesive strips can be made of natural materials to avoid irritating the user's skin.

[0050] The shapes of the replacement core 3 and the replacement core slot 22 can be designed as needed, for example, they can be designed as a long strip shape corresponding to the central shape of the basic core 2, or other ergonomic shapes. For example, Figure 2a As shown, the front and rear ends of the replacement core 3 can be designed as approximately arc-shaped, with the width of the rear end being greater than the width of the front end. The left and right sides of the replacement core 3 are curved inwards.

[0051] During packaging, the number of replacement cores 3 can be set as needed. Preferably, one set of sanitary underwear can be equipped with 1-5 replacement cores 3. The packaging method can be selected as needed. For example, if the base core 2 is not fixedly connected to the body 1, the body 1, base core 2, and replacement cores 3 can be packaged separately, or a replacement core 3 can be pre-placed in the replacement core slot 22 of the base core 2 for packaging together, while the body 1 and replacement cores 3 are packaged separately. If the base core 2 is fixedly connected to the body 1, the base core 2 and body 1 can be packaged together, and the replacement cores 3 can be packaged separately. Alternatively, a replacement core 3 can be pre-placed on the base core 2 before packaging, while the remaining replacement cores 3 are packaged separately.

[0052] When using the product, a replacement core 3 can be placed in the replacement core slot 22 on the base core 2. After a period of use, the replacement core 3 can be manually removed from the replacement core slot 22, and another replacement core 3 can be inserted until all the replacement cores 3 are used up, or when the sanitary underwear is nearing its expiration date. For example, if the sanitary underwear 1 is meant to be used for one day, when the usage time is close to one day, the replacement core 3 can be removed, and the base core 2 can be used to absorb menstrual blood until the base core 2 is used up. After that, the sanitary underwear can be discarded. Alternatively, when the user returns home, the replacement core 3 can be removed, and the base core 2 can be used directly to absorb menstrual blood. After use, the sanitary underwear can be discarded. If there are any spare replacement cores 3, these can be used in conjunction with other sanitary underwear of the same model.

[0053] Example 2

[0054] like Figure 3a , Figure 3b , Figure 3c As shown, based on Embodiment 1, the shape of the replacement core 3 can be designed as a cartoon shape, which can be an animal or a popular cartoon character. Correspondingly, the shape of the replacement core groove 22 on the base core 2 matches the shape of the replacement core 3. This arrangement allows for an irregularly shaped positioning surface between the replacement core groove 22 and the replacement core 3, making the connection between the replacement core 3 and the base core 2 more stable and giving the replacement core 3 a more interesting shape, appealing to women and adolescent girls.

[0055] Example 3

[0056] like Figure 4a , Figure 4b , Figure 4c As shown, based on Embodiment 1, the difference is that the limiting structure on the base core 2 is a raised limiting edge 23 located in the middle of the base core 2. The shape of the limiting edge 23 corresponds to the shape of the replacement core 3. In use, the replacement core 3 is embedded in the limiting edge 23. With this setting, it is not necessary to thicken the base core 2. Only a raised limiting edge needs to be set on the surface of the base core 2 to limit and fix the replacement core 3. The structure is simpler. This solution makes the base core 2 thinner, thus providing better air permeability during use. Moreover, when the replacement core 3 is not used and liquid is absorbed solely through the base core 2, the raised limiting edge 23 can also prevent liquid leakage.

[0057] The replacement core 3 can be a one-piece molded sheet or a sheet assembled from multiple layers. Its shape corresponds to the shape of the limiting edge 23. The thickness of the replacement core 3 can be selected as needed, and can be greater than, equal to or less than the depth of the limiting edge.

[0058] Among them, the basic core 2 with the protruding limiting edge 23 can be foamed by a corresponding mold during processing.

[0059] As a preferred option, a leak-proof protrusion 21 can also be provided on the edge of the base core 2. By providing the protrusion 21, the leak-proof function of the base core 2 can be improved. The protrusion 21 can be designed on the left and right sides of the base core 2, or it can be designed on the entire edge of the base core 2.

[0060] Example 4

[0061] like Figure 5a , Figure 5b , Figure 5cAs shown, based on Embodiment 3, a further improvement to the sanitary underwear is that the replacement core 3 has a cartoon shape, and the shape of the limiting edge 23 corresponds to the shape of the replacement core 3. This design allows for an irregularly shaped positioning surface between the limiting edge 23 and the replacement core 3, which not only makes the connection between the replacement core 3 and the base core 2 more stable but also makes the shape of the replacement core 3 more interesting, appealing to women and adolescent girls.

[0062] Example 5

[0063] like Figure 6a , Figure 6b , Figure 6c As shown, the sanitary underwear of this utility model includes a main body 1, a basic core 2, and a replacement core 3.

[0064] The main body 1 can be made of pure cotton disposable underwear, or other comfortable and breathable disposable underwear materials, such as other commonly used underwear materials, such as lyocell fiber fabric, cotton linen fabric, or ice silk fabric, etc.

[0065] The shape of the main body 1 can be selected as needed, for example, it can be selected as follows: Figure 1 The underwear shown is narrower in the front than in the back, or you can choose underwear with similar widths in the front and back.

[0066] Both the base core 2 and the replacement core 3 can be absorbent cores made of latex material containing SAP particles, such as the absorbent core disclosed in the patent with publication number CN 118267238 A.

[0067] The shape of the basic core 2 can be designed as needed, for example, it can be designed as follows: Figure 6a The shape shown is narrow in the front and wide in the back. The left and right sides of the base core 2 are designed as arc-shaped and curved inwards, which are adapted to the shape of the crotch of the underwear.

[0068] The basic core 2 is sheet-shaped, and its thickness can be selected as needed.

[0069] The base core 2 does not need to be fixedly connected to the main body because the outer surface of the base core 2 is made of latex material, which has a strong adhesion to the disposable cotton underwear. When the base core is placed inside the disposable underwear for wearing, the base core is not easy to slip. Moreover, the sanitary underwear can fit the body closely and is not easy to slip when worn. Therefore, the base core 2 can be used normally even if it is not fixedly connected to the main body 1.

[0070] Preferably, the base core 2 is fixedly connected to the lower middle part of the inner side of the body 1, and the front and rear sides of the base core 2 extend to a suitable height on the body 1. The base core 2 can be sewn and fixed to the body 1, or fixed to the body 1 with hot melt adhesive or other non-irritating adhesive, or fixed and connected in other safe and non-irritating ways.

[0071] The replacement core 3 can be a one-piece molded sheet or a multi-layered sheet. Its thickness can be selected as needed, and can be greater than, equal to or less than the depth of the replacement core groove.

[0072] To improve the positional stability of the replacement core 3 and the base core 2, the replacement core 3 and the base core 2 can be connected by a connector 4. The connector 4 can be selected as needed, for example, it can be Velcro or adhesive strip. Velcro can be single-sided or double-sided. Single-sided Velcro needs to be pre-fixed to the bottom surface of the replacement core 3. Double-sided Velcro can be used to connect the replacement core 3 and the base core 2 on both sides respectively. If adhesive strip is used, the replacement core 3 and the base core 2 can be bonded together. The adhesive strip can be made of natural materials to avoid irritating the user's skin.

[0073] The shape of the replacement core 3 can be designed as needed, for example, it can be designed as a long strip shape corresponding to the central shape of the basic core 2, or other ergonomic shapes. For example, Figure 6a As shown, the front and rear ends of the replacement core can be designed as approximately arc-shaped, with the rear end being wider than the front end. The left and right sides of the replacement core are curved inwards. The replacement core can also be designed in various cartoon shapes.

[0074] Example 6

[0075] like Figure 7a , Figure 7b , Figure 7c As shown, based on embodiment 5, a leak-proof protrusion 21 can be provided on the edge of the base core 2. By providing the protrusion 21, the leak-proof function of the base core 2 can be improved. The protrusion 21 can be designed at the left and right sides of the base core 2, or it can be designed at the entire edge of the base core 2.

[0076] To further enhance the leak-proof function, a raised edge can also be designed on the edge of the replacement core 3. The raised edge can be designed on the left and right sides of the replacement core 3, or it can be designed on the entire edge of the replacement core 3.

[0077] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A type of sanitary underwear, characterized in that: It includes a main body, a base core, and a replacement core. The main body is a comfortable and breathable disposable underwear. Both the base core and the replacement core are absorbent cores made of latex material containing SAP particles. The base core is located in the lower middle part of the main body and has a limiting structure. The replacement core is manually replaceable and located within the limiting structure of the base core.

2. The sanitary underwear according to claim 1, characterized in that: The basic core is fixedly installed in the lower middle part of the main body.

3. The sanitary underwear according to claim 1, characterized in that: The limiting structure is a recessed replacement core groove located in the middle of the base core. The shape of the replacement core corresponds to the shape of the replacement core groove, and the replacement core is embedded in the replacement core groove.

4. The sanitary underwear according to claim 1, characterized in that: The limiting structure is a raised limiting edge located in the middle of the base core. The shape of the limiting edge corresponds to the shape of the replacement core, and the replacement core is embedded in the limiting edge.

5. The sanitary underwear according to any one of claims 1-4, characterized in that: The replacement core is in the shape of a cartoon character.

6. The sanitary underwear according to any one of claims 1-4, characterized in that: The bottom of the replacement core is provided with a connector, and the replacement core is fixedly connected to the base core through the connector.

7. The sanitary underwear according to any one of claims 1-4, characterized in that: The edge of the base core is provided with a leak-proof protrusion.

8. A type of sanitary underwear, characterized in that: It includes a main body, a base core, and a replacement core. The main body is a comfortable and breathable disposable underwear. Both the base core and the replacement core are absorbent cores made of latex material containing SAP particles. The base core is located in the lower middle part of the main body. The replacement core has a connector at the bottom and is fixedly connected to the base core through the connector.

9. The sanitary underwear according to claim 8, characterized in that: The basic core is fixedly connected to the lower middle part of the body.

10. The sanitary underwear according to claim 8, characterized in that: The edge of the base core is provided with a leak-proof protrusion.

Images