An improved waistband structure for panty-style diapers

Abstract

An improved waistband structure for panty-style diapers includes an absorbent core and an outer casing. The outer casing comprises an outer non-woven fabric layer, an elastic material layer, and an inner non-woven fabric layer. The outer casing, located in the front and back waistband areas, forms a waistband elastic device. The liquid-impermeable bottom layer of the absorbent core is bonded to the inner non-woven fabric layer of the outer casing at least in the front and back waistband areas. The front and back waistband areas are joined together along their transverse side edges to form a side seal. A waistband device is provided, which is connected to the back waistband. The waistband device has hooks at both ends along its length and is elastically stretchable. The hooks can be detachably attached to the outside of the outer casing. This panty-style diaper not only retains the original elastic band function but also adds extra protection, solving the problem of limited size adjustment range in traditional panty-style diapers. The introduction of the waistband device provides a wider size adjustment range and better fit for panty-style diapers, enhancing the product's adaptability and functionality.

Description

Technical Field

[0001] This application relates to the field of disposable absorbent products, and more specifically, to an underwear-style diaper with an improved waistband structure. Background Technology

[0002] Disposable pant-style diapers, such as baby diapers, adult diapers, and women's period pant pants, are widely used personal hygiene products. The main function of these products is to absorb and contain bodily waste while preventing it from soiling clothing or other contact items, such as bedding. Pant-style diapers typically feature a 3D pant-like design with elastic throughout the waistband to provide a comfortable wearing experience and a reliable fit.

[0003] Currently, most underwear-style diapers on the market have a separate elastic waistband design. During manufacturing, two layers of non-woven fabric are first laminated with an elastic stretching element and then glued together. This is then separated into front and back waistband sections. During assembly, a certain gap is maintained between the front and back waist areas before the absorbent core is attached. While this design method is simple and direct, it still has limitations in some aspects.

[0004] Pant-style diapers are worn by inserting the wearer's legs into the leg openings and then pulling the diaper up to the appropriate position around the wearer's lower body. This design is particularly suitable for children undergoing toilet training and for wearers who are becoming more active, making traditional adhesive absorbent products difficult to apply. However, existing pant-style diapers still have some structural shortcomings.

[0005] Current designs primarily rely on highly stretchable elastic bands to accommodate different body shapes. While this method provides a degree of comfort and fit, its adjustment range is limited. Introducing additional protective measures while maintaining the basic function of the elastic bands remains a technical challenge. For example, how to improve the product's leak-proof performance without compromising overall comfort, or how to increase the product's ease of wear and removal while ensuring a good fit, are problems that existing technologies need to address.

[0006] Furthermore, existing underwear-style diapers often lack personalized adjustment features. Different users have different body types and activity habits, and a single elastic design cannot meet everyone's needs. How to provide users with more personalized options while ensuring the product's basic functions is also an urgent problem to be solved.

[0007] To address the aforementioned issues, existing technologies urgently need improvement. Summary of the Invention

[0008] The purpose of this application is to provide an underwear-style diaper with an improved waistband structure, which has the advantages of improving the product's leak-proof performance, increasing ease of putting on and taking off, and providing personalized adjustment functions.

[0009] This application provides an improved waistband structure for a panty-style diaper. The technical solution is as follows: The diaper has a front waistband area, a back waistband area, and a crotch area between the front and back waistband areas in the longitudinal direction. It has an absorbent body and an outer body. The absorbent body has a liquid-permeable surface layer, a liquid-impermeable bottom layer, and an absorbent core layer between the liquid-permeable surface layer and the liquid-impermeable bottom layer that absorbs and contains liquid. The outer body includes an outer non-woven fabric layer, an elastic material layer, and an inner non-woven fabric layer. The outer body in the front and back waistband areas constitutes a waistband elastic device. The liquid-impermeable bottom layer of the absorbent body is joined to the inner non-woven fabric layer of the outer body at least in the front and back waistband areas. The front and back waistband areas are joined together along their transverse side edges to form a side seal, creating an absorbent item with one waist opening and two leg openings. A waistband device is provided, with its center length connected to the back waistband. Magic hook devices are provided at both ends of the waistband device. The waistband device has elastic stretchability in its length direction, and the magic hook devices are detachably attached to the outside of the outer body.

[0010] Furthermore, this application also proposes that the waistband device of the panty-style diaper has a longitudinal dimension of 30%-90% of the elastic waist circumference of the back waist area in the longitudinal direction.

[0011] Furthermore, this application also proposes that the two sides of the front waistband area of ​​the underwear-style diaper are respectively provided with longitudinal dotted cut lines, the dotted cut lines being 5-25mm away from the side seal, and a fastening device is provided. The fixed end of the fastening device is fixedly engaged with the side seal, and the free end is provided with a magic hook that fits into the front waistband area. The fastening device is used to detachably join the front and back waistband areas.

[0012] Furthermore, this application also proposes that the waistband device of the panty-style diaper has a length in the longitudinal direction of the panty-style diaper that is 10%-80% of the length in the longitudinal direction of the fastening device of the panty-style diaper. Before the panty-style diaper is used, the two ends of the waistband device are attached to the fastening device by a magic hook device.

[0013] Furthermore, this application also proposes that the peeling force between the magic hook on the waistband device of the panty-style diaper and the fastening device is less than the peeling force between the magic hook on the fastening device and the waistband nonwoven fabric.

[0014] Furthermore, this application also proposes that the back waistband of the panty-style diaper has a waistband channel between the inner and outer nonwoven fabric layers for the waistband device to pass through, and the outer nonwoven fabric of the waistband on both sides of the back waistband area has an opening for the waistband device to pass through. The transverse center of the waistband device is located in the waistband channel between the inner and outer nonwoven fabric layers of the waistband, and both ends of the waistband device extend out through the openings in the outer nonwoven fabric of the back waistband.

[0015] Furthermore, this application also proposes that the waist belt device is not fixedly connected to the inner and outer nonwoven fabric layers of the waistband.

[0016] Furthermore, this application also proposes that no elastic waistband is provided at the waistband device location in the rear waistband area.

[0017] Furthermore, this application also proposes that the middle position of the waistband device is joined to the outer nonwoven fabric of the waistband by one of the following methods: hook, adhesive bonding, or heat pressing.

[0018] Furthermore, this application also proposes that there is an intermediate nonwoven fabric layer between the elastic material layer and the outer nonwoven fabric of the outer body, and there is a waist belt channel between the intermediate nonwoven fabric and the outer nonwoven fabric of the back waistband for the waist belt device to pass through. The outer nonwoven fabric of the waistband on both sides of the back waistband area is provided with an opening for the waist belt device to pass through. The transverse center of the waist belt device is located in the waist belt channel between the intermediate and outer nonwoven fabrics of the waistband, and both ends of the waist belt device extend out through the opening of the outer nonwoven fabric of the back waistband.

[0019] As described above, the improved waistband structure of this application provides a pant-style diaper with a waistband device. The waistband device is connected to the back waistband at its center and has hook-and-loop fasteners at both ends. It is elastic and stretchable along its length and can be detachably attached to the outside of the outer casing. This design increases the product's leak-proof performance and fit through the adjustable waistband device, while also providing personalized adjustment functionality, making the product easier to put on and take off. This solves the problems existing in the prior art and has the advantages of improved leak-proof performance, increased ease of use, and personalized adjustment functionality. Attached Figure Description

[0020] Figure 1 A schematic diagram provided for this application; Figure 2 A three-dimensional schematic diagram provided for this application; Figure 3 A schematic diagram of its use provided in this application; Figure 4 for Figure 2 A cross-sectional view along the HH direction; Figure 5 for Figure 2 Another schematic diagram of the cross-sectional view in the HH direction; Figure 6 for Figure 2 Another schematic diagram of the cross-sectional view in the HH direction.

[0021] In the diagram, 1 represents an underwear-style diaper, 2 represents the absorbent core, 21 represents the liquid-permeable outer layer, 22 represents the absorbent core layer, 23 represents the liquid-impermeable bottom layer, 3 represents the outer casing, 31 represents the inner non-woven fabric layer, 32 represents the elastic material layer, 33 represents the outer non-woven fabric layer, 34 represents the middle non-woven fabric layer, 36 represents the waistband channel, 4 represents the fastening device, 41 represents the fixed end of the fastening device, 42 represents the free end of the fastening device, 43 represents the magic hook of the fastening device, 5 represents the waistband device, 51 represents the middle of the waistband device length, 52 represents the two ends of the waistband device length, 53 represents the magic hook device on the waistband device, 6 represents the side seal, 7 represents the waist opening, 8 represents the leg opening, 9 represents the dotted cut line, A represents the front waist area, B represents the crotch area, and C represents the back waist area. Detailed Implementation

[0022] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of this application, and not all embodiments. The components of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application. Example 1

[0023] Panty-style diapers, such as baby diapers, adult diapers, and women's menstrual pants, are well-known. The main function of these disposable diapers is to absorb and contain bodily waste, and to prevent it from soiling, wetting, or otherwise contaminating clothing or other items in contact with the wearer, such as bedding. Panty-style diapers generally have a three-dimensional pant-like design with an elastic waistband. Currently, most panty-style diapers design the elastic waistband as a separate section, consisting of two layers of non-woven fabric bonded together with adhesive, then divided into front and back waistband sections, separated before being joined to the absorbent core. Panty-style diapers are designed to be worn by inserting the wearer's legs into the leg openings and pulling the diaper up to the appropriate position around the wearer's lower body. Panty-style absorbent products have become popular for children who can walk and are often undergoing toilet training, as well as for wearers who are becoming more active and find the application of adhesive absorbent products more difficult. However, existing panty-style diapers have some structural limitations. They typically offer only a limited range of size adjustment, relying primarily on highly stretchable elastic bands to accommodate different body types. While this design provides a comfortable wearing experience and a reliable fit, introducing additional protection while maintaining the basic function of the elastic bands remains a challenge.

[0024] like Figures 1-4 As shown, an improved waistband structure for a panty-style diaper 1 includes a front waistband area A, a back waistband area C, and a crotch area B located between the front waistband area A and the back waistband area C in the longitudinal direction. It has an absorbent core 2 and an outer body 3. The absorbent core 2 has a liquid-permeable surface layer 21, a liquid-impermeable bottom layer 23, and an absorbent core layer 22 located between the liquid-permeable surface layer and the liquid-impermeable bottom layer to absorb and contain liquid. The outer body 3 includes an inner non-woven fabric layer 31, an elastic material layer 32, and an outer non-woven fabric layer 33. The outer body structure in the front and back waistband areas... The absorbent material 23, consisting of an elastic waistband, is bonded at least in the front and back waistband areas to the inner nonwoven fabric of the outer casing. The front and back waistband areas are joined together along their transverse sides to form a side seal 6, creating an absorbent item with one waist opening 7 and two leg openings 8. A waistband device 5 is provided, with its center length connected to the back waistband. Both ends 52 of the waistband device 5 are equipped with hook devices. The waistband device is elastically stretchable along its length, and the hook devices can be detachably attached to the outside of the outer casing. The length direction of the waistband device is consistent with the transverse direction of the diaper and perpendicular to the longitudinal direction of the diaper.

[0025] Traditional panty-style diapers have limitations in their structural design, failing to provide sufficient size adjustment range and relying mainly on elastic bands to accommodate different body shapes. By introducing a waistband device that connects to the back waistband, the problem of limited size adjustment range is solved. The waistband device 5 has hook devices 53 at both ends 52, which can be detachably attached to the outside of the outer casing 3. During use, the waistband device's length can be adjusted by stretching it, and the hook devices can be detachably attached to the appropriate position on the outside of the outer casing 3, thus achieving more flexible size adjustment and a better fit.

[0026] The absorbent core 2 includes a liquid-permeable outer layer 21, a liquid-impermeable inner layer 23, and an absorbent core layer 22 located between the two. The outer body 3 consists of an inner non-woven fabric 31, an elastic material layer 32, and an outer non-woven fabric 33. The outer body in the front and back waist areas constitutes a waist elastic device. The central portion 52 of the waistband device 5 is connected to the back waistband, and the hook-and-loop fasteners at both ends of its length can be detachably attached to the outside of the outer body. Thus, the waistband device 5 provides additional size adjustment functionality, enhancing wearing comfort and adaptability.

[0027] The improved panty-style diaper 1, through the introduction of the waistband device 5, provides a more flexible size adjustment method. The elasticity of the waistband device 5 and the detachable engagement of the magic hook device 53 allow the wearer to adjust it according to their own needs, improving the wearing experience. Compared with the prior art, the improved panty-style diaper not only retains the original elastic band area function but also adds extra protective measures, solving the problem of limited size adjustment range of traditional panty-style diapers.

[0028] By adding a waistband device 5 to the panty-style diaper 1 and setting magic hook devices 53 at both ends of the waistband device, the waistband device 5 can be detachably engaged with the outer side of the outer body. The elasticity of the waistband device 5 allows it to adapt to wearers of different body types, providing a wider range of size adjustment. Specifically, the central part of the waistband device 5 is connected to the back waistband, and the magic hook devices 53 at both ends of the length can be detachably engaged with the outer side of the outer body, thereby achieving flexible size adjustment and better fit. Through this design, the improved panty-style diaper not only improves wearing comfort but also enhances the product's adaptability and functionality.

[0029] The improved panty-style diaper solves the problem of limited size adjustment range in traditional panty-style diapers by introducing a waistband device 5. The elasticity of the waistband device and the detachable connection of the magic hook device allow the wearer to adjust it to their needs, improving the wearing experience. Compared to existing technologies, the improved panty-style diaper not only retains the original elastic band function but also adds extra protective measures, resolving the problem of limited size adjustment range in traditional panty-style diapers. The introduction of the waistband device provides a wider size adjustment range and better fit for the panty-style diaper, enhancing the product's adaptability and functionality.

[0030] Furthermore, this application also proposes that there is a specific proportional relationship between the size of the waistband device in the longitudinal direction of the panty-style diaper (i.e., the width of the waistband device) and the length of the elastic waistband in the longitudinal direction of the panty-style diaper, i.e., the width of the waistband device is 30% to 90% of the length of the elastic waistband in the back waistband area.

[0031] This design solves the problem of mismatched length ratios between the waistband device and the elastic waistband in existing technologies, allowing the waistband device to provide sufficient support and comfort while working in harmony with the elastic waistband. By setting the length ratio between the waistband device and the elastic waistband, it ensures that the panty-style diaper fits the wearer's waist more closely when worn, providing better comfort and stability.

[0032] Specifically, the length or width of the waistband can be adjusted to suit the needs of different wearers. For example, for baby diapers, the waistband width can be set between 50% and 70% of the elastic waistband's length in the longitudinal direction to ensure adequate support and comfort; for adult diapers, the waistband width can be set between 30% and 50% of the elastic waistband's length in the longitudinal direction to accommodate different body types. Through this adjustable design, panty-style diapers can better adapt to changes in the body shape of different wearers, providing a more personalized wearing experience.

[0033] Through the above design, this application provides an improved waistband structure that can provide additional support and stability while maintaining the basic function of the elastic waistband, solving the problem of the disharmony between the waistband device and the length of the elastic waistband in the prior art, and improving the comfort and applicability of panty-style diapers.

[0034] Furthermore, this application also proposes that on both sides of the front waist area A of the underwear-style diaper, there are dotted cut lines 9, the dotted cut lines 9 are 5-25mm away from the side seal 6, and there is a fastening device 4. The fixed end 41 of the fastening device 4 is fixedly engaged with the side seal 6, and the free end 42 is provided with a magic hook 43. The magic hook 43 is attached to the front waist area A. The fastening device 4 is used to connect or join the front and back waist areas A and C in a separable manner.

[0035] The technical solution of this application provides dotted cut lines 9 on both sides of the front waist area, allowing the fastening device to be torn along the dotted cut lines of the underwear-style diaper when needed, thus separating the front waist area and the back waist area. Figure 2 As shown. This design solves the problem of limited size adjustment range in existing underwear-style diapers, providing greater flexibility and comfort. The fastening device 4 has a fixed end 41 that is fixedly engaged with the side seal 6, and a free end 42 equipped with a magic hook 43. The magic hook 43 can fit into the front waist area. This detachable engagement method allows the wearer to easily adjust the tightness of the waistband.

[0036] The dummy cut lines 9 can be implemented in various ways, such as by pre-setting weakening lines on the material at both sides of the front waistband, or by laser cutting. These dummy cut lines 9 do not affect the overall strength of the diaper during normal use, but can be cut by applying appropriate force when the waistband needs to be adjusted. The fastening device 4 can be made of various materials and structures, such as the left and right waistband system of a high-strength unfoldable diaper.

[0037] The technical solution of this application, by setting a dotted cut line and a fastening device in the front waist area, increases the adjustability and flexibility of the waistband of the panty-style diaper while maintaining its original function, enabling it to better adapt to wearers of different body types. Compared with the prior art, the design of this application not only improves the comfort and convenience of wearing, but also extends the service life of the diaper to a certain extent.

[0038] Furthermore, this application also proposes that the waistband device 5, in the longitudinal direction of the panty-style diaper 1, is 10%-80% of the longitudinal direction dimension of the fastening device 5 of the panty-style diaper. Before use, the two ends of the waistband device are attached to the fastening device 4 via the magic hook device 53. Figure 1 As shown.

[0039] As mentioned in the background section, disposable panty-style diapers, such as baby diapers, adult diapers, and women's menstrual pants, primarily function to absorb and contain bodily excrement, preventing it from soiling, wetting, or contaminating clothing or other items. Panty-style diapers generally feature a three-dimensional pant-like design with elasticity throughout the waistband. Existing panty-style diapers have structural limitations, typically offering only a limited range of size adjustment, relying mainly on highly stretchable elastic bands to accommodate different body types. The technical solution of this application solves the problem of limited size adjustment in existing technologies by setting a waistband device 5, where the waistband device 5's dimension in the longitudinal direction of the panty-style diaper is 10%-80% of the dimension of the fastening device in the longitudinal direction of the panty-style diaper. Before use, it is attached to the fastening device 4 via a magic hook device 53, thereby addressing the issue of limited size adjustment in existing technologies.

[0040] The newly added technical features or steps include the waistband device having a longitudinal dimension in the panty-style diaper that is 10%-80% of the longitudinal dimension of the fastening device in the panty-style diaper, and being attached to the fastening device by a hook-and-loop fastener before use. Specifically, the waistband device can be made of various materials, such as elastic fabric, rubber, or other elastic and stretchable materials. The hook-and-loop fastener can be fixed to both ends of the waistband device and the fastening device by means of sewing, gluing, or heat pressing.

[0041] The technical solution of this application adds a waistband device to the panty-style diaper, which is then attached to the fastening device via a magic hook device before use. This allows the panty-style diaper to better adapt to wearers of different body types. Compared with the prior art, the waistband device and fastening device of the panty-style diaper of this application work together to achieve a synergistic effect, providing a wider range of waist size adjustment and improving wearing comfort and fit.

[0042] Furthermore, this application proposes that the peel force between the magic hook 53 on the waist belt device 5 and the fastening device 4 is less than the peel force between the magic hook 43 on the fastening device 4 and the waistband nonwoven fabric. The technical solution is to design the peel force between the magic hook on the waist belt device and the fastening device to be less than the peel force between the magic hook on the fastening device and the waistband nonwoven fabric, thereby achieving a more stable connection. Specifically, the magic hook on the waist belt device can be more easily separated from the fastening device during use, while the magic hook on the fastening device is more firmly fixed to the waistband nonwoven fabric. This design ensures that the waist belt device will not easily fall off during use, providing better stability and comfort. The implementation of the new technical feature includes optimizing the selection and design of the magic hook material to ensure that its peel force meets the requirements. For example, different combinations of magic hook materials can be selected, their peel force tested, and a suitable combination selected for the waist belt device and the fastening device. In addition, the required peel force characteristics can also be achieved by adjusting the size, shape, and distribution density of the magic hook. As a preferred implementation, the adhesive force of the magic hook can be strictly controlled during the production process to ensure that its peeling force meets the design requirements.

[0043] This application optimizes the peeling force between the magic hook and the fastening device on the waistband device, enabling the waistband device to be more stably and reliably fixed to the underwear-style diaper during use. Compared with the prior art, this design not only improves the comfort and stability of the underwear-style diaper but also provides a better user experience, especially for users who need to frequently put on and take off the diaper, such as infants, adults, and women during menstruation. Therefore, the technical solution of this application addresses the limitations of the prior art while providing a more practical and effective improvement.

[0044] Furthermore, this application proposes a waistband channel 36 between the inner nonwoven fabric 31 and the outer nonwoven fabric 33 of the back waistband C of the underwear-style diaper, through which a waistband device can pass. The outer nonwoven fabric of the waistband on both sides of the back waistband area has an opening for the waistband device to pass through. The transverse center of the waistband device is located in the waistband channel between the inner and outer nonwoven fabrics of the waistband. Both ends of the waistband device extend through the openings in the outer nonwoven fabric of the back waistband, and the center of the waistband device in the longitudinal direction is connected to the back waistband by passing through the waistband channel. The inner nonwoven fabric 31 and the outer nonwoven fabric 33 are not connected within the waistband channel. Outside the waistband channel, the inner nonwoven fabric 31 and the outer nonwoven fabric 33 are connected together by hot melt adhesive, ultrasonic waves, or other methods. This application solves the problem of limited size adjustment range in the prior art by providing a waistband channel 36 between the inner nonwoven fabric 31 and the outer nonwoven fabric 33 of the back waistband for the waistband device to pass through. Specifically, the outer layer of non-woven fabric on both sides of the back waist area has an opening, and the horizontal center of the waist belt device is located between the inner and outer layers of non-woven fabric. The two ends of the waist belt device extend out through the openings. This design allows the waist belt device to be adjusted as needed during wear, providing better adaptability and comfort.

[0045] The waistband channel 36 of the waistband device 5 can be achieved by fixing the inner and outer nonwoven fabric portions together during the manufacturing process to form a closed waistband channel space. The openings of the waistband device 5 can be formed on the outer nonwoven fabric through cutting or other methods. The two ends of the waistband device 5 extend through these openings and can be adjusted according to the wearer's needs, ensuring the comfort and fit of the diaper. Figure 3 As shown, during use, the waist belt device 5 can be stretched to separate the fastening devices at both ends of the waist belt device, and the waist belt device can be stretched to connect the two ends of the waist belt device to the front waist area through the magic hook device of the waist belt device according to the wearer's body condition.

[0046] This design provides an improved waistband structure, which increases the flexibility of size adjustment for panty-style diapers while maintaining their original functions, thus solving the problem of limited size adjustment range in existing technologies. Compared with existing technologies, the technical solution provided by this application can better adapt to wearers of different body types, providing a more comfortable and reliable wearing experience.

[0047] Furthermore, this application proposes that the waist belt device has no fixed connection or relative connection with the inner nonwoven fabric 31 and the outer nonwoven fabric 33 of the waistband. This design primarily solves the problem of fixing the waist belt device between the inner and outer nonwoven fabrics of the waistband. By designing the waist belt device to have no fixed connection with the inner and outer nonwoven fabrics of the waistband, the flexibility and adjustability of the waist belt device can be increased while maintaining the elasticity of the waistband. This design without a fixed connection allows the waist belt device to be freely adjusted according to the wearer's body shape and movements, providing better comfort and fit. Specifically, the waist belt device 5 can move freely during use without being restricted by fixed points. This design not only improves wearing comfort but also simplifies the product manufacturing process. The waist belt device can be easily inserted into or passed through the waist belt channel in the back waistband area without additional fixing steps. Furthermore, this design also reduces friction and wear between the waist belt device and other components, extending the product's service life. By employing this non-fixed waistband device, the improved waistband structure of this application for pant-style diapers provides a good fit while increasing product flexibility and comfort. Compared with existing technologies, this design not only improves the wearing experience but also simplifies the manufacturing process, making it highly practical.

[0048] like Figure 1 , 4 As shown, no elastic material is provided at the waistband device location in the back waist area. In existing panty-style diapers, the waist area typically has an elastic device to provide a good fit and comfort. However, this application aims to create a waistband channel 36 for the elastic waistband by eliminating the elastic waistband at the waistband device location in the back waist area. Example 2

[0049] like Figure 5 As shown, this application further proposes that there is an intermediate nonwoven fabric 34 between the elastic material layer 32 and the outer nonwoven fabric 33 of the outer body, and there is a waist belt channel 36 between the intermediate nonwoven fabric 34 and the outer nonwoven fabric 33 of the back waistband for the waist belt device to pass through. The outer nonwoven fabric of the waistband on both sides of the back waistband area is provided with an opening for the waist belt device to pass through. The transverse center of the waist belt device is located between the intermediate and outer nonwoven fabrics of the waistband, and both ends of the waist belt device extend out through the opening of the outer nonwoven fabric of the back waistband.

[0050] The technical solution of this application solves the structural limitations of existing underwear-style diapers, especially the limited size adjustment range. By adding an intermediate non-woven fabric layer between the elastic material layer of the outer body and the outer non-woven fabric layer, and setting a waistband channel between the intermediate non-woven fabric layer and the outer non-woven fabric layer in the back waistband, the waistband device can pass through the waistband channel, thereby achieving flexible adjustment and fixation of the waistband device.

[0051] Specifically, the waistband extends through an opening in the back waist area, with its horizontal center positioned between the middle and outer non-woven fabric layers of the waistband. This design not only ensures the stability and reliability of the waistband but also increases the adjustability and adaptability of the waistband. Both ends of the waistband can be secured and adjusted using hook-and-loop fasteners to accommodate wearers of different body types, thus providing a better wearing experience and comfort.

[0052] This design effectively addresses the shortcomings of existing panty-style diapers in terms of size adjustment, providing a more flexible and comfortable solution. By adding a middle layer of non-woven fabric and incorporating waistband channels, the installation and adjustment of the waistband device become more convenient, thereby improving the overall product performance and user experience. Example 3

[0053] Furthermore, this application also proposes that the middle position of the waistband device is joined to the outer nonwoven fabric of the waistband using one of the following methods: hook and loop fastener, adhesive bonding, or heat pressing. Figure 6 As shown. The technical solution of this application relates to an improved waistband structure for a pant-style diaper, particularly achieving better fixation through the connection method between the middle position of the waistband device and the outer non-woven fabric of the waistband. The waistband device can be connected to the outer non-woven fabric of the waistband at the middle position via a hook, adhesive, or heat-pressing, making the waistband device more stable during use and less prone to displacement or detachment. This improves the wearing comfort and stability of the pant-style diaper. Compared with the prior art, the technical solution of this application solves the problem of easy displacement or detachment of the waistband device in existing pant-style diapers by improving the fixation method, thus improving wearing stability and comfort. Furthermore, by providing multiple connection methods, this technical solution has greater flexibility and adaptability, meeting the needs of different users and usage environments.

[0054] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. An improved waistband structure for underwear-style diapers, comprising a front waistband area, a back waistband area, and a crotch area between the front and back waistband areas in the longitudinal direction, having an absorbent body and an outer body, the absorbent body having a liquid-permeable surface layer, a liquid-impermeable bottom layer, and an absorbent core layer between the liquid-permeable surface layer and the liquid-impermeable bottom layer for absorbing and containing liquid, the outer body comprising an inner non-woven fabric layer, an elastic material layer, and an outer non-woven fabric layer, the outer body located in the front and back waistband areas constituting a waistband elastic device, the liquid-impermeable bottom layer of the absorbent body being joined to the inner non-woven fabric layer of the outer body at least in the front and back waistband areas, the front and back waistband areas being joined together along their two transverse edges to form a side seal, forming an absorbent article with one waist opening and two leg openings, characterized in that: There is a waist belt device, which is connected to the back waist at the center of its length. The waist belt device has magic hook devices at both ends of its length. The waist belt device has elasticity in its length direction. The magic hook devices are detachably attached to the outside of the outer body.

2. The improved waistline structure panty-type diaper according to claim 1, characterized by: The waist belt device has a longitudinal dimension of 30%-90% of the elastic waist circumference of the back waist area in the longitudinal direction.

3. The improved waistline structure panty-type diaper according to claim 1, wherein: The front waist area has longitudinal dotted cut lines on both sides. The dotted cut lines are 5-25mm away from the side seal. There is a fastening device. One end of the fastening device is fixedly connected to the side seal, and the other end is provided with a magic hook. The magic hook is attached to the front waist area. The fastening device is used to connect the front and back waist areas in a separable manner.

4. The improved waistline structure panty-type diaper according to claim 3, wherein: The waistband device's longitudinal dimension in the panty-style diaper is 10%-80% of the fastening device's longitudinal dimension in the panty-style diaper. Before use, the two ends of the waistband device are attached to the fastening device via a magic hook device.

5. The improved waistline structure panty-type diaper according to claim 3, wherein: The peeling force between the magic hook on the waist belt device and the fastening device is less than the peeling force between the magic hook on the fastening device and the non-woven fabric of the waistband.

6. The improved waistline structure panty-type diaper according to claim 1, wherein: There is a waistband channel between the inner and outer nonwoven fabrics of the back waistband, through which the waistband device can pass. The outer nonwoven fabric of the waistband on both sides of the back waistband area has an opening through which the waistband device can pass. The lateral center of the waistband device is located in the waistband channel between the inner and outer nonwoven fabrics of the waistband. Both ends of the waistband device extend out through the opening in the outer nonwoven fabric of the back waistband.

7. The improved waistline structure panty-style diaper according to claim 6, characterized by: The waistband device is not fixedly connected to the inner and outer non-woven fabric layers of the waistband.

8. The improved waistline structure panty-type diaper according to claim 6, wherein: There is no elastic waistband at the waistband device location in the back waist area.

9. The improved waistline structure panty-type diaper according to claim 3, wherein: Between the elastic material layer and the outer nonwoven fabric of the outer body, there is an intermediate nonwoven fabric layer. There is a waist belt channel between the intermediate nonwoven fabric layer and the outer nonwoven fabric layer of the back waistband, through which the waist belt device can pass. The outer nonwoven fabric layer of the waistband on both sides of the back waistband area has an opening through which the waist belt device can pass. The lateral center of the waist belt device is located in the waist belt channel between the intermediate and outer nonwoven fabric layers of the waistband. Both ends of the waist belt device extend out through the opening in the outer nonwoven fabric layer of the back waistband.

10. The improved waistline structure panty-type diaper according to claim 3, wherein: The waistband device is attached to the outer non-woven fabric of the waistband in the middle by one of the following methods: hook and loop fastener, adhesive bonding, or heat pressing.

Images