Underpants type paper diaper with improved waistline structure
By adopting an improved waist structure in panty-type diapers, including a belt device and a magic hook device, the problems of limited size adjustment range, insufficient leakage protection performance and lack of personalized adjustment functions in the prior art are solved, and higher leakage protection performance, fit and easy to put on and take off are achieved.
Patent Information
- Application Number
- CN202510258918.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-06
- Publication Date
- 2025-05-02
AI Technical Summary
The existing underwear-style diapers have problems in structurally limited size adjustment range, insufficient leakage protection performance and lack of personalized adjustment functions.
An improved waist structure is adopted, including a front waist area, a rear waist area and a crotch area in the longitudinal direction, combining the absorbing body and the outer body. The outer body is composed of an inner non-woven fabric, an elastic material layer and an outer non-woven fabric. The length center of the waist belt device is connected to the rear waist area. A magic hook device is arranged at both ends of the length, which is elastic and elastic, and can be separated and joined to the outside of the outer body.
It improves the leakage resistance and fit of the product, provides personalized adjustment functions, makes the product easier to put on and take off, and solves the shortcomings in the prior art.
Smart Images
Figure CN119908904A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of disposable absorbent products, in particular to a pant-type diaper with an improved waist structure. Background Art
[0002] Disposable panty diapers, such as baby diapers, adult diapers and women's menstrual pants, are widely used personal hygiene products. The main function of this type of product is to absorb and contain body excrement while preventing the excrement from contaminating clothing or other contact items such as bedding. Panty diapers usually adopt a three-dimensional pants design with elasticity throughout the waist area to provide a comfortable wearing experience and a reliable fit.
[0003] Most panty-type diapers on the market currently have elastic waistbands designed as separate parts. During the manufacturing process, two layers of non-woven fabrics are first compounded with elastic stretch parts and sprayed with glue, and then cut into front waistband and back waistband parts. During assembly, a certain distance is maintained between the front and back waist areas, and then the upper absorbent is joined. Although this design method is simple and direct, it still has limitations in some aspects.
[0004] Panty diapers are put on 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 who are undergoing toilet training and those who become more active, making it difficult to apply traditional adhesive absorbent products. However, existing panty diapers still have some structural deficiencies.
[0005] Existing designs mainly rely on highly stretchable elastic bands to adapt to different body shapes. Although this method can provide a certain degree of comfort and fit, the adjustment range is limited. Introducing additional protection measures while maintaining the basic functions of the elastic band remains a technical challenge. For example, how to improve the product's leak-proof performance without affecting overall comfort, or how to increase the product's ease of wearing and taking off while ensuring fit are all problems that existing technologies need to solve.
[0006] In addition, existing underwear-style diapers often lack personalized adjustment functions. Different users have different body shapes and activity habits, and a single elastic design is difficult to meet the needs of everyone. How to provide users with more personalized choices while ensuring the basic functions of the product is also an urgent problem to be solved.
[0007] In view of the above problems, the existing technology is in urgent need of improvement. Summary of the invention
[0008] The purpose of the present application is to provide a panty-type diaper with an improved waist structure, which has the advantages of improving the leakage-proof performance of the product, increasing the ease of putting on and taking off, and providing personalized adjustment functions.
[0009] The present application provides an underpants-type diaper with an improved waist structure, and the technical solution is as follows: It has a front waist area, a rear waist area and a crotch area between the front waist area and the rear waist area in the longitudinal direction, 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 for absorbing and containing liquid located between the liquid-permeable surface layer material and the liquid-impermeable bottom layer, the outer body includes an outer non-woven fabric, an elastic material layer, and an inner non-woven fabric, the outer body located in the front and rear waist areas constitutes a waist elastic device, the liquid-impermeable bottom layer of the absorbent body is joined to the inner non-woven fabric of the outer body at least in the front and rear waist areas, the front and rear waist areas are joined together along the two lateral side edges to form a side sealing portion, forming an absorbent article with a waist opening and two leg openings, a belt device, the center of the length of the belt device is relatively connected to the rear waist, and magic hook devices are arranged at both ends of the length of the belt device. The belt device has elastic stretchability in its length direction, and the magic hook device is detachably joined to the outside of the outer body.
[0010] Furthermore, the present application also proposes that the dimension of the waistband device of the underwear-type diaper in the longitudinal direction is 30%-90% of the length of the elastic waist in the rear waist region in the longitudinal direction.
[0011] Furthermore, the present application also proposes that the two side edges of the front waist area of the underwear-type diaper are respectively provided with longitudinal virtual cutting lines, and the lateral distance between the virtual cutting lines and the side sealing part is 5-25mm. There is a fastening device, the fixed end of the fastening device is fixedly engaged with the side sealing part, and the free end is provided with a magic hook, which is attached to the front waist area. The fastening device is used to detachably connect the front and rear waist areas.
[0012] Furthermore, the present application also proposes that the dimension of the waistband device of the underpants-type diaper in the longitudinal direction of the underpants-type diaper is 10%-80% of the dimension of the fastening device in the longitudinal direction of the underpants-type diaper, and before the underpants-type diaper is used, the two ends of the length of the waistband device are attached to the fastening device through a magic hook device.
[0013] Furthermore, the present application also proposes that the peeling force between the magic hook on the waistband device of the underwear-type diaper and the fastening device is smaller than the peeling force between the magic hook on the fastening device and the waist non-woven fabric.
[0014] Furthermore, the present application also proposes that a belt channel is provided between the inner non-woven fabric and the outer non-woven fabric of the rear waistline of the underwear-type diaper, through which a belt device can pass; the outer non-woven fabric of the waistline at both side edges of the rear waistline region is provided with an opening through which the belt device can pass; the lateral center of the belt device is located in the belt channel between the inner and outer non-woven fabrics of the waistline, and the two ends of the belt device extend out through the openings of the outer non-woven fabric of the waistline at the rear waistline.
[0015] Furthermore, the present application also proposes that the waist belt device has no fixed connection with the inner and outer non-woven fabrics of the waist.
[0016] Furthermore, the present application also proposes that no elastic waist is provided at the position of the waist belt device in the rear waist region.
[0017] Furthermore, the present application also proposes that the middle position of the waistband device is joined to the outer non-woven fabric of the waist by a joining method such as magic hook, adhesive bonding, and heat pressing.
[0018] Furthermore, the present application also proposes that there is an intermediate layer of non-woven fabric between the elastic material layer and the outer layer of non-woven fabric of the outer body, a belt channel for the belt device to pass through is provided between the intermediate layer of non-woven fabric and the outer layer of non-woven fabric of the rear waistline, and an opening for the belt device to pass through is provided on the outer layer of non-woven fabric of the waistline at both side edges of the rear waistline area, and the lateral center of the belt device is located in the belt channel between the intermediate layer and the outer layer of non-woven fabric of the waistline, and both ends of the belt device extend out through the openings of the outer waistline non-woven fabric of the rear waistline.
[0019] As can be seen from the above, the present application provides an improved waist structure underwear diaper, which has a waist belt device, the waist belt device is connected to the back waist in the middle of the length, and magic hook devices are provided at both ends of the length, which are elastic and retractable in the length direction, and the magic hook devices can be detachably connected to the outside of the outer body. This design increases the leakage-proof performance and fit of the product through the adjustable waist belt device, and at the same time provides a personalized adjustment function, making the product easier to put on and take off, thereby solving the problems existing in the prior art, and has the advantages of improving the leakage-proof performance of the product, increasing the ease of putting on and taking off, and providing a personalized adjustment function. BRIEF DESCRIPTION OF THE DRAWINGS
[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 use provided for this application; Figure 4 for Figure 2 A cross-sectional view in the HH direction; Figure 5 for Figure 2 Another schematic diagram of a 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 figure, 1 is a panty-type diaper, 2 is an absorbent body, 21 is a liquid-permeable surface layer, 22 is an absorbent core layer, 23 is a liquid-impermeable bottom layer, 3 is an outer body, 31 is an inner nonwoven fabric, 32 is an elastic material layer, 33 is an outer nonwoven fabric, 34 is an intermediate nonwoven fabric, 36 is a waistband channel, 4 is a fastening device, 41 is a fixed end of the fastening device, 42 is a free end of the fastening device, 43 is a magic hook of the fastening device, 5 is a waistband device, 51 is the middle of the waistband device length, 52 is the two ends of the waistband device length, 53 is a magic hook device on the waistband device, a side sealing part 6, a waist opening 7, a leg opening 8, a virtual cutting line 9, A is a front waist area, B is a crotch area, and C is a back waist area. DETAILED DESCRIPTION
[0022] The technical solutions in the present application will be clearly and completely described below in conjunction with the drawings in the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The components of the present application generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the present application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application. Example 1
[0023] Underpants diapers, such as baby diapers, adult diapers, and women's menstrual pants, are well known. The main function of this type of disposable diapers is to absorb and contain body excrement, and is also used to prevent body excrement from soiling, wetting or otherwise contaminating clothing or other items in contact with the wearer, such as bedding. Underpants diapers generally have a three-dimensional pants design, and the entire waist area is elastic. At present, most underpants diapers are designed with elastic waist as a separate part, and the elastic elastic parts after spraying are compounded by two layers of non-woven fabrics and then cut into the front waist and rear waist parts, and then the front and rear waist areas are separated by a distance, and then the upper absorbent is joined. Underpants diapers can be worn as products that stretch the wearer's legs into the leg openings and pull the underpants diapers to the appropriate position around the wearer's lower body to wear. For children who can walk and are often undergoing toilet training, and for wearers who become more active in sports and make the application of adhesive absorbent products more difficult, pants-type absorbent products have become popular. However, existing panty-type diapers have some structural limitations. They usually only provide a limited size adjustment range, relying mainly on highly stretchable elastic bands to adapt to different body shapes. Although this design can provide a comfortable wearing experience and a reliable fit, it is still a challenge to introduce additional protection while maintaining the basic function of the elastic band.
[0024] like Figure 1-Figure 4 As shown, an underpants-type diaper 1 with an improved waist structure has a front waist region A, a rear waist region C and a crotch region B located between the front waist region A and the rear waist region C in the longitudinal direction, an absorbent body 2 and an outer body 3, the absorbent body 2 has a liquid-permeable surface layer 21, a liquid-impermeable bottom layer 23 and an absorbent core layer 22 for absorbing and holding liquid located between the liquid-permeable surface layer material and the liquid-impermeable bottom layer, the outer body 3 includes an inner nonwoven fabric 31, an elastic material layer 32, and an outer nonwoven fabric 33, the outer body structure located in the front and rear waist regions The absorbent article has a waist elastic device, the liquid-impermeable bottom material 23 of the absorbent body is joined to the inner non-woven fabric of the outer body at least in the front and rear waist regions, and the front and rear waist regions are joined together along the transverse side edges to form a side sealing portion 6, forming an absorbent article with a waist opening 7 and two leg openings 8, and a waist belt device 5, the waist belt device 5 is relatively connected to the rear waist in the middle of the length, and magic hook devices are provided at both ends 52 of the length of the waist belt device 5, the waist belt device has elasticity in its length direction, and the magic hook device can be detachably joined to the outside of the outer body. The length direction of the waist belt device is consistent with the transverse direction of the underpants-type diaper, and the length direction of the waist belt device is perpendicular to the longitudinal direction of the underpants-type diaper.
[0025] Traditional panty-type diapers have limitations in structural design and cannot provide a sufficient size adjustment range. They mainly rely on elastic belt areas to adapt to different body shapes. By introducing a waistband device and connecting it to the rear waistline, the problem of limited size adjustment range is solved. Magic hook devices 53 are set at both ends 52 of the length of the waistband device 5, which can be detachably connected to the outside of the outer body 3. When in use, the elongation of the waistband device is adjusted by stretching, and the magic hook device is detachably connected to a suitable position on the outside of the outer body 3, thereby achieving more flexible size adjustment and better fit.
[0026] The absorbent body 2 includes a liquid-permeable surface layer 21, a liquid-impermeable bottom layer 23, and an absorbent core layer 22 located therebetween. The outer body 3 is composed of an inner nonwoven fabric 31, an elastic material layer 32, and an outer nonwoven fabric 33. The outer body in the front and rear waist regions constitutes a waist elastic device. The central portion 52 of the belt device 5 is relatively connected to the rear waist, and the magic hook devices at both ends of the length are detachably connected to the outer side of the outer body. As a result, the belt device 5 provides an additional size adjustment function, which enhances the comfort and adaptability of wearing.
[0027] The improved panty-type diaper 1 provides a more flexible size adjustment method by introducing the waistband device 5. The elasticity of the waistband device 5 and the detachable engagement method of the magic hook device 53 enable the wearer to adjust the size according to his or her own needs, thereby improving the wearing experience. Compared with the prior art, the improved panty-type diaper not only maintains the original elastic belt function, but also adds additional protection measures, thereby solving the problem of limited size adjustment range of traditional panty-type diapers.
[0028] By adding a belt device 5 to the underpants-type diaper 1 and providing magic hook devices 53 at both ends of the length of the belt device, the belt device 5 can be detachably engaged with the outer side of the outer body. The elasticity of the belt device 5 enables it to adapt to wearers of different body shapes and provides a larger size adjustment range. Specifically, the central part of the belt device 5 is relatively connected to the rear waistline, 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 underpants-type diaper not only improves the comfort of wearing, but also enhances the adaptability and functionality of the product.
[0029] The improved panty-type diaper solves the problem of limited size adjustment range of traditional panty-type diapers by introducing a waistband device 5. The elasticity of the waistband device and the detachable engagement mode of the magic hook device enable the wearer to adjust according to their own needs, thereby improving the wearing experience. Compared with the prior art, the improved panty-type diaper not only maintains the original elastic belt area function, but also adds additional protection measures, thereby solving the problem of limited size adjustment range of traditional panty-type diapers. The introduction of the waistband device provides the panty-type diaper with a larger size adjustment range and better fit, thereby enhancing the adaptability and functionality of the product.
[0030] Furthermore, the present application also proposes that there is a specific proportional relationship between the size of the waistband device in the longitudinal direction of the underwear-type diaper (i.e., the width of the waistband device) and the length of the elastic waist in the longitudinal direction of the underwear-type diaper, i.e., the width of the waistband device is 30% to 90% of the length of the elastic waist in the rear waist region.
[0031] This design solves the problem of the inconsistency between the length ratio of the waistband device and the elastic waistband in the rear waistband area in the prior art, so that the waistband device can work in coordination with the elastic waistband while providing sufficient support and comfort. By setting the length ratio of the waistband device and the elastic waistband, it can be ensured that the panty-type diaper fits the wearer's waist better when worn, providing better comfort and stability.
[0032] Specifically, the length or width range of the waistband device can be adjusted according to the needs of different wearers. For example, for baby diapers, the width of the waistband device can be set between 50% and 70% of the length of the elastic waist in the longitudinal direction to ensure proper support and comfort; for adult diapers, the width of the waistband device can be set between 30% and 50% of the length of the elastic waist in the longitudinal direction to accommodate the needs of different body shapes. Through this adjustable design, panty diapers can better adapt to the changes in body shape of different wearers and provide a more personalized wearing experience.
[0033] Through the above design, the present application provides an improved waist structure, which can provide additional support and stability while maintaining the basic function of the elastic waist, solves the problem of the inharmonious length ratio between the waistband device and the elastic waist in the prior art, and improves the comfort and applicability of the underwear-type diaper.
[0034] Furthermore, the present application also proposes that virtual cutting lines 9 are respectively provided on both side edges of the front waist region A of the underwear-type diaper, and the virtual cutting line 9 is 5-25 mm away from the side sealing portion 6 in a lateral direction. There is a fastening device 4, and the fixed end 41 of the fastening device 4 is fixedly engaged with the side sealing portion 6, and the free end 42 is provided with a magic hook 43, and the magic hook 43 is attached to the front waist region A. The fastening device 4 is used to connect or engage the front and rear waist regions A and C in a detachable manner.
[0035] The technical solution of the present application provides virtual cutting lines 9 on both sides of the front waist area, so that the fastening device can be torn along the virtual cutting lines of the underwear-type diaper when needed, that is, the front waist area and the back waist area are separated. Figure 2 As shown. This design solves the problem of limited size adjustment range of existing underwear-type diapers and provides greater flexibility and comfort. The fixed end 41 of the fastening device 4 is fixedly engaged with the side sealing portion 6, and the free end 42 is provided with a magic hook 43, which can be attached to the front waist area. This detachable engagement method allows the wearer to easily adjust the tightness of the waist.
[0036] The virtual cut-off line 9 can be realized in a variety of ways, for example, a weakened line can be pre-set on the material of the two side edges of the front waistline, or formed by laser cutting. These virtual cut-off lines 9 will not affect the overall strength of the diaper during normal use, but can be cut off by applying appropriate force when the waistline needs to be adjusted. The fastening device 4 can be made of a variety of materials and structures, for example, a high-strength left and right waist tape system of an unfolded diaper can be used.
[0037] The technical solution of the present application provides a virtual cut-off line and a fastening device in the front waist area, so that the underwear-type diaper can maintain its original function while increasing the adjustability and flexibility of the waist, and can better adapt to wearers of different body shapes. Compared with the prior art, the design of the present application not only improves the comfort and convenience of wearing, but also prolongs the service life of the diaper to a certain extent.
[0038] Furthermore, the present application also proposes that the dimension of the waistband device 5 in the longitudinal direction of the underpants-type diaper 1 is 10%-80% of the dimension of the fastening device 5 in the longitudinal direction of the underpants-type diaper. Before the underpants-type diaper is used, the two ends of the waistband device are attached to the fastening device 4 through the magic hook device 53. Figure 1 shown.
[0039] It is mentioned in the background technology that the main function of disposable panty-type diapers, such as baby diapers, adult diapers, and women's menstrual pants, is to absorb and contain body excrement to prevent body excrement from soiling, wetting or contaminating clothing or other items. Panty-type diapers generally have a three-dimensional pants-shaped design, and the entire waist area is elastic. Existing panty-type diapers have some limitations in structure and usually can only provide a limited size adjustment range, mainly relying on highly stretchable elastic belt areas to adapt to different body shapes. The technical solution of the present application is to set a belt device 5 so that the size of the belt device 5 in the longitudinal direction of the panty-type diaper is 10%-80% of the size of the fastening device in the longitudinal direction of the panty-type diaper, and before use, it is attached to the fastening device 4 through a magic hook device 53, thereby solving the problem of limited size adjustment range in the prior art.
[0040] The newly added technical features or steps include that the size of the waistband device in the longitudinal direction of the panty-type diaper is 10%-80% of the size of the fastening device in the longitudinal direction of the panty-type diaper, and that the waistband device is attached to the fastening device by a magic hook device before use. Specifically, the waistband device can be made of a variety of materials, such as elastic fabric, rubber or other elastic and stretchable materials. The magic hook device can be fixed to the two ends of the waistband device and the fastening device by sewing, bonding or heat pressing.
[0041] The technical solution of the present application adds a belt device to the panty-type diaper, and fits it to the fastening device through a magic hook device before use, so that the panty-type diaper can better adapt to wearers of different body shapes. Compared with the prior art, the belt device and the fastening device of the panty-type diaper of the present application cooperate to play a coordinated and synergistic role, provide a larger waist size adjustment range, and improve wearing comfort and fit.
[0042] Furthermore, the present application also proposes that the peeling force between the magic hook 53 on the belt device 5 and the fastening device 4 is less than the peeling force between the magic hook 43 on the fastening device 4 and the waist non-woven fabric. The technical solution is to design the peeling force between the magic hook on the belt device and the fastening device so that it is less than the peeling force between the magic hook on the fastening device and the waist non-woven fabric, thereby achieving a more stable connection effect. Specifically, the magic hook on the 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 on the waist non-woven fabric. Such a design can ensure that the belt device will not fall off easily during use, providing better stability and comfort. The implementation method of the newly added technical features includes optimizing the selection and design of the magic hook material to ensure that its peeling force meets the requirements. For example, different magic hook material combinations can be selected, their peeling forces can be tested, and suitable combinations can be selected for the belt device and the fastening device. In addition, the required peeling force characteristics can be achieved by adjusting the size, shape and distribution density of the magic hook. As a preferred embodiment, 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] The present application optimizes the peeling force between the magic hook on the waistband device and the fastening device, so that the waistband device can be more stably and reliably fixed on the underwear-type diaper during use. Compared with the prior art, this design not only improves the comfort and stability of the underwear-type diaper, but also provides a better user experience, especially for users who need to put on and take off frequently, such as infants, adults and female menstrual users. Therefore, the technical solution of the present application provides a more practical and effective improvement solution while solving the limitations of the prior art.
[0044] Furthermore, the present application also proposes that there is a waistband passage 36 between the inner non-woven fabric 31 and the outer non-woven fabric 33 of the rear waistband C of the panty-type diaper, through which a waistband device can pass, and the waistband outer non-woven fabrics at both sides of the rear waistband area are respectively provided with an opening through which a waistband device can pass, and the transverse center of the waistband device is located in the waistband passage between the inner and outer non-woven fabrics of the waistband, and the two ends of the waistband device extend out through the openings of the outer waistband non-woven fabric of the rear waistband, and the center of the waistband device in the longitudinal direction is connected to the rear waistband by passing through the waistband passage. In the waistband passage, the inner non-woven fabric 31 and the outer non-woven fabric 33 are not connected, and in the area other than the waistband passage, the inner non-woven fabric 31 and the outer non-woven fabric 33 are connected together by hot melt adhesive, ultrasound, etc. The present application solves the problem of limited size adjustment range in the prior art by providing a waistband passage 36 between the inner non-woven fabric 31 and the outer non-woven fabric 33 of the rear waistband. Specifically, the outer non-woven fabrics at both sides of the rear waistline are respectively provided with an opening, the transverse center of the waistband device is located between the inner and outer non-woven fabrics of the waistline, and the two ends of the waistband device extend out through the opening. This design allows the waistband device to be adjusted as needed when worn, providing better adaptability and comfort.
[0045] The waistband channel 36 of the waistband device 5 can be realized by fixing the inner and outer nonwoven fabric parts together during the production process to form a closed waistband channel space. The openings of the waistband device 5 can be formed on the outer nonwoven fabric by cutting or other means. The two ends of the waistband device 5 extend through these openings and can be adjusted according to the needs of the wearer to ensure the comfort and fit of the diaper. Figure 3 As shown, during use, the belt device 5 can be stretched, the fastening devices at both ends of the belt device can be peeled off, and the belt device can be stretched, and the two ends of the belt device can be connected to the front waist area through the magic hook device of the belt device according to the wearer's physical condition.
[0046] Through this design, the present application provides an improved waist structure, which increases the flexibility of size adjustment while maintaining the original function of the underwear-type diaper, and solves the problem of limited size adjustment range in the prior art. Compared with the prior art, the technical solution provided by the present application can better adapt to wearers of different body shapes and provide a more comfortable and reliable wearing experience.
[0047] Furthermore, the present application also proposes that the belt device has no fixed connection or relative connection with the inner non-woven fabric 31 and the outer non-woven fabric 33 of the waist. The technical solution of this design mainly solves the problem of fixing the belt device between the inner and outer non-woven fabrics of the waist. By designing the belt device to have no fixed connection with the inner and outer non-woven fabrics of the waist, the flexibility and adjustability of the belt device can be increased while maintaining the elasticity of the waist. This design without fixed connection allows the belt device to be freely adjusted according to the body shape and movements of the wearer, providing better comfort and fit. Specifically, the belt device 5 can move freely during use without being restricted by the fixed points. This design not only improves the comfort of wearing, but also simplifies the manufacturing process of the product. The belt device can be realized by simply inserting or passing through the belt channel of the rear waist area, without the need for additional fixing steps. Furthermore, this design also reduces the friction and wear between the belt device and other components, extending the service life of the product. By adopting this non-fixed belt device, the improved waist structure underwear diaper of the present application provides good fit while increasing the flexibility and comfort of the product. Compared with the prior art, this design not only improves the wearing experience, but also simplifies the manufacturing process, and has high practical value.
[0048] like Figure 1 , 4 As shown in the figure, no elastic material is provided at the waistband device position in the rear waist region. In the existing pant-type diapers, the waist region is usually provided with elastic devices to provide good fit and comfort. However, the present application eliminates the elastic waistband at the waistband device position in the rear waist region, and aims to form a waistband channel 36 of the elastic waistband in this region. Example 2
[0049] like Figure 5 As shown, further, the present application also proposes that there is an intermediate layer of non-woven fabric 34 between the elastic material layer 32 of the outer body and the outer layer of non-woven fabric 33, and there is a belt channel 36 for the belt device to pass through between the intermediate layer of non-woven fabric 34 and the outer layer of non-woven fabric 33 of the rear waistline, and the outer layer of non-woven fabric of the waistline at both side edges of the rear waistline area is provided with an opening for the belt device to pass through, and the lateral center of the belt device is located between the intermediate layer and the outer layer of non-woven fabric of the waistline, and the two ends of the belt device extend out through the openings of the outer waistline non-woven fabric of the rear waistline.
[0050] The technical solution of the present application solves the structural limitations of existing underwear-type diapers, especially the problem of limited size adjustment range. By adding an intermediate non-woven fabric between the elastic material layer of the outer body and the outer non-woven fabric, and providing a belt channel between the intermediate non-woven fabric and the outer non-woven fabric at the rear waist, the belt device can pass through the belt channel, thereby realizing flexible adjustment and fixation of the belt device.
[0051] Specifically, the waist belt device extends through the opening of the rear waist area, and its transverse center is located between the waist middle layer and the outer non-woven fabric. This design not only ensures the stability and reliability of the waist belt device, but also increases the adjustability and adaptability of the waist. The two ends of the waist belt device can be fixed and adjusted by magic hook devices to adapt to wearers of different body shapes, thereby providing better wearing experience and comfort.
[0052] This design can effectively solve the shortcomings of the existing panty-type diapers in size adjustment, and provide a more flexible and comfortable solution. By adding a middle layer of non-woven fabric and setting a waistband channel, the installation and adjustment of the waistband device are more convenient, thereby improving the overall performance of the product and user experience. Example 3
[0053] Furthermore, the present application also proposes that the middle position of the waistband device is joined to the outer non-woven fabric of the waist by a magic hook, adhesive bonding, or heat pressing. Figure 6 As shown. The technical solution of the present application relates to an underpants-type diaper with an improved waist structure, particularly to a better fixing effect achieved by joining the middle position of the waistband device with the outer non-woven fabric of the waistband. The waistband device can be joined to the outer non-woven fabric of the waistband at the middle position by means of magic hooks, adhesive bonding or heat pressing, so that the waistband device is more stable during use and is not prone to displacement or falling off. As a result, the wearing comfort and stability of the underpants-type diaper are improved. Compared with the prior art, the technical solution of the present application solves the problem of the easy displacement or falling off of the waistband device of the existing underpants-type diapers during use by improving the fixing method of the waistband device, thereby improving the stability and comfort of wearing. Furthermore, by providing a variety of joining methods to choose from, the technical solution has higher flexibility and adaptability, and can meet the needs of different users and usage environments.
[0054] The above description is only an embodiment of the present application and is not intended to limit the protection scope of the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. An underpants-type diaper with an improved waist structure, which has a front waist region, a rear waist region and a crotch region between the front waist region and the rear waist region in the longitudinal direction, and has an absorbent body and an outer body, wherein the absorbent body has a liquid-permeable surface layer, a liquid-impermeable bottom layer and an absorbent core layer for absorbing and containing liquid between the liquid-permeable surface layer and the liquid-impermeable bottom layer, the outer body comprises an inner non-woven fabric, an elastic material layer and an outer non-woven fabric, the outer body located in the front and rear waist regions constitutes a waist elastic device, the liquid-impermeable bottom layer of the absorbent body is joined to the inner non-woven fabric of the outer body at least in the front and rear waist regions, the front and rear waist regions are joined together along the transverse side edges to form a side sealing portion, forming an absorbent article with a waist opening and two leg openings, characterized in that: A waist belt device is provided, the middle of the waist belt device is connected to the back waistline, and magic hook devices are arranged at both ends of the waist belt device. The waist belt device has elasticity in the length direction, and the magic hook devices are detachably connected to the outer side of the outer body.
2. The underwear-type diaper with improved waist structure according to claim 1, characterized in that: The dimension of the waistband device in the longitudinal direction is 30%-90% of the length of the elastic waist in the rear waist region in the longitudinal direction.
3. The underwear-type diaper with improved waist structure according to claim 1, characterized in that: The two side edges of the front waistline area are respectively provided with longitudinal virtual cutting lines, and the horizontal distance between the virtual cutting lines and the side sealing part is 5-25mm. There is a fastening device, one end of the fastening device is fixedly engaged with the side sealing part, and the other end is provided with a magic hook, which is attached to the front waistline area. The fastening device is used to connect the front and rear waistline areas in a detachable manner.
4. The underwear-type diaper with improved waist structure according to claim 3, characterized in that: The dimension of the waistband device in the longitudinal direction of the underpants-type diaper is 10%-80% of the dimension of the fastening device in the longitudinal direction of the underpants-type diaper. Before the underpants-type diaper is used, the two ends of the waistband device are attached to the fastening device through magic hook devices.
5. The underwear-type diaper with improved waist structure according to claim 3, characterized in that: The peeling force between the magic hook on the waistband device and the fastening device is smaller than the peeling force between the magic hook on the fastening device and the waist non-woven fabric.
6. The underwear-type diaper with improved waist structure according to claim 1, characterized in that: A belt channel is provided between the inner and outer non-woven fabrics of the rear waistband, through which the belt device passes; an opening is provided on the outer non-woven fabric of the waistband at both side edges of the rear waistband area, through which the belt device passes; the transverse center of the belt device is located in the belt channel between the inner and outer non-woven fabrics of the waistband, and both ends of the belt device extend out through the openings of the outer non-woven fabric of the waistband of the rear waistband.
7. The underwear-type diaper with improved waist structure according to claim 6, characterized in that: The waist belt device has no fixed connection with the inner and outer non-woven fabrics of the waist.
8. The underwear-type diaper with improved waist structure according to claim 6, characterized in that: There is no elastic waistband provided at the location of the waistband arrangement in the rear waistband area.
9. The underwear-type diaper with improved waist structure according to claim 3, characterized in that: There is also a middle layer of non-woven fabric between the elastic material layer and the outer layer of non-woven fabric of the outer body, a belt channel for the belt device to pass through is provided between the middle layer of non-woven fabric and the outer layer of non-woven fabric of the rear waistline, and an opening for the belt device to pass through is provided on the waistline outer layer of non-woven fabric at both side edges of the rear waistline area, the lateral center of the belt device is located in the belt channel between the middle layer of the waistline and the outer layer of non-woven fabric, and both ends of the belt device extend out through the openings of the outer waistline non-woven fabric of the rear waistline.
10. The underwear-type diaper with improved waist structure according to claim 3, characterized in that: The middle position of the waistband device is joined to the outer non-woven fabric of the waist by a joining method of magic hook, adhesive bonding, or heat pressing.