Female disposable underpants
By using an independently produced leak-proof edging structure and standardized processes to widen the crotch area, the problem of constriction and friction caused by the narrow crotch area of traditional disposable underwear is solved, achieving efficient and comfortable leak-proof effect and low-cost production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANG DONG ZHONG KE RUN HU LI YONG PIN YOU XIAN GONG SI
- Filing Date
- 2025-04-28
- Publication Date
- 2026-04-24
AI Technical Summary
Traditional disposable underwear has a narrow crotch area, which leads to a feeling of constriction and friction. It is also expensive to produce and fails to meet consumers' needs for comfortable wear.
The leak-proof edging structure is produced independently, including the connecting part, the edging and the adjustment support part. The crotch is widened by adhesive, sewing and heat pressing processes. It uses pure cotton non-woven fabric and is designed as a one-piece cut structure. Combined with S-shaped elastic and abrasion reduction holes, it achieves standardized production.
Effective control of material and labor costs, increased crotch width, reduced friction and leakage risks, improved wearing comfort and leak-proof effect, rapid response to market demand, and reduced production modification costs.
Smart Images

Figure CN224155154U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of disposable underwear technology, specifically a disposable women's underwear. Background Technology
[0002] Traditional disposable underwear is a convenient everyday wear item that can meet users' temporary and convenient needs, such as during travel, menstruation, postpartum care, and other special occasions.
[0003] However, traditional disposable underwear often suffers from an overly narrow crotch area. This narrow crotch design can create a feeling of constriction during wear, affecting not only freedom of movement but also potentially causing skin discomfort and even health problems such as redness and itching due to friction. This discomfort is particularly pronounced during prolonged wear or vigorous activity, severely impacting the user's wearing experience and satisfaction.
[0004] Because the production process of disposable underwear relies heavily on customized production equipment and cutting molds, manufacturers need to spend a significant amount of money to redesign and manufacture these molds and equipment to produce disposable underwear with the appropriate crotch width. This cost is often prohibitive, resulting in a relatively small number of disposable underwear products with wider crotches on the market, failing to meet the growing demand for comfortable wear from consumers. Utility Model Content
[0005] To address the aforementioned shortcomings, this invention proposes a disposable women's underwear where the leak-proof crotch band can be produced independently of the main body of the underwear. This utilizes standardized and large-scale production methods, effectively controlling material and labor costs. Furthermore, the adhesive bonding, sewing, and heat-pressing processes are mature and easy to implement, requiring no large-scale modifications to existing production lines. This results in high production flexibility and the ability to quickly respond to changes in market demand. This invention solves the problem of needing to invest heavily in custom-made production equipment to produce disposable underwear with a wide crotch area.
[0006] To achieve this objective, the present invention adopts the following technical solution:
[0007] A disposable women's underwear includes a main body, the main body including a front waistband, a crotch, and a back waistband, the crotch connecting the front waistband and the back waistband;
[0008] The left and right sides of the front waist and the back waist are bonded together to form a ring structure, and the left and right sides of the crotch are provided with leak-proof edging.
[0009] The leak-proof edging includes a connecting part, an edging, and an adjusting support part. The connecting part is used to connect with the crotch area. The outer side of the connecting part is connected to the inner side of the edging. The outer side of the edging is connected to the adjusting support part. The edging has an arc-shaped structure. There is a gap between the two ends of the arc-shaped structure and the adjusting support part. The edging is used to widen the crotch area.
[0010] The connecting part, the surrounding edge, and the adjusting support part are an integrally cut structure.
[0011] The outer surface of the support adjustment part is provided with a rough surface area and a hook surface area from the inside to the outside.
[0012] The adjustment support has a near-circular structure.
[0013] The leak-proof edging is made of pure cotton non-woven fabric.
[0014] Both the front waist and the rear waist near the crotch are provided with S-shaped elastic bands.
[0015] Both the front waist and the back waist have elastic waistbands at the ends furthest from the crotch.
[0016] The overlapping area of the front waist and the rear waist is provided with friction-reducing holes at intervals, which are used to reduce the hardness of the overlapping area of the front waist and the rear waist.
[0017] The main body comprises, from the inside out, an inner nonwoven fabric lining, a supporting nonwoven fabric, an absorbent lining, and an outer nonwoven fabric layer.
[0018] The outer nonwoven fabric is folded inward to form a folded section, and the inner wall of the folded section is bonded to the inner wall of the inner nonwoven fabric. The waist elastic is provided in the folded section.
[0019] The technical solution of this utility model can include the following beneficial effects:
[0020] 1. The production of the leak-proof crotch band can be carried out independently of the main body of the underwear, adopting a standardized and large-scale production method to effectively control material and labor costs. Meanwhile, the adhesive, sewing, and heat-pressing processes are mature and easy to implement, requiring no large-scale modification of existing production lines. This results in high production flexibility and the ability to quickly respond to changes in market demand. This invention solves the problem of needing to spend a lot of money customizing production equipment to produce disposable underwear with a wide crotch area.
[0021] 2. The wider crotch area of disposable underwear can also increase the adhesive area of sanitary napkins, making them fit more tightly to the crotch area of the disposable underwear, reducing the risk of displacement or falling off due to activity or friction, and preventing side leakage or back leakage. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of a disposable underwear according to one embodiment of the present invention;
[0023] Figure 2 This is an unfolded view of a disposable underwear according to one embodiment of this utility model;
[0024] Figure 3 This is a cross-sectional view of a disposable underwear according to one embodiment of the present invention;
[0025] Figure 4 This is a schematic diagram of a leak-proof edging according to one embodiment of the present invention;
[0026] Among them, 01, inner non-woven fabric lining; 02, supporting non-woven fabric; 03, absorbent lining; 04, outer non-woven fabric; 1, front waist; 2, crotch; 3, back waist; 4, leak-proof edging; 41, connecting part; 42, edging; 43, adjusting support part; 431, textured surface area; 432, hook surface area; 5, S-shaped elastic band; 51, waist elastic band; 52, abrasion reduction hole. Detailed Implementation
[0027] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.
[0028] In the description of this utility model, it should be understood that the terms "length", "middle", "upper", "lower", "left", "right", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "assembly," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0031] The following is combined with Figures 1 to 4This describes a disposable women's underwear according to an embodiment of the present utility model.
[0032] A disposable women's underwear includes a main body, the main body including a front waistband 1, a crotch 2 and a back waistband 3, the crotch 2 connecting the front waistband 1 and the back waistband 3;
[0033] The left and right sides of the front waist 1 and the rear waist 3 are bonded together to form a ring structure, and the left and right sides of the crotch 2 are provided with leak-proof edging 4.
[0034] The leak-proof edging 4 includes a connecting part 41, an edging 42, and an adjusting support part 43. The connecting part 41 is used to connect with the crotch 2. The outer side of the connecting part 41 is connected to the inner side of the edging 42. The outer side of the edging 42 is connected to the adjusting support part 43. The edging 42 has an arc-shaped structure. A gap 44 is formed between the two ends of the arc-shaped structure and the adjusting support part 43. The edging 42 is used to widen the width of the crotch 2.
[0035] Compared to directly customizing production equipment and cutting molds, the manufacturer can pre-produce the leak-proof edging 4, which is narrow at the front and back and wide in the middle, and then set the leak-proof edging 4 on the left and right sides of the crotch 2 through processes such as gluing, sewing, and hot pressing.
[0036] The production of the leak-proof crotch band 4 can be carried out independently of the main body of the underwear, adopting a standardized and large-scale production method to effectively control material and labor costs. Meanwhile, the adhesive, sewing, and heat-pressing processes are mature and easy to implement, requiring no large-scale modification of existing production lines, resulting in high production flexibility and the ability to quickly respond to changes in market demand. This invention solves the problem of traditionally requiring expensive custom-made production equipment to produce disposable underwear with a wide crotch area 2.
[0037] The connecting part 41 ensures a reliable connection with the crotch area 2, guaranteeing that the leak-proof gusset 4 is securely fixed in the crotch area 2. The gusset 42 plays a primary role in preventing leaks by widening the crotch area 2, effectively blocking secretions and other fluids from leaking out. By folding and adjusting the support part 43, the thickness of the gusset 2 can be flexibly increased, allowing the widened crotch area 2 to better conform to the curves of a woman's body and reduce gaps between the crotch area 2 and the body. This not only makes the underwear fit better and more comfortably when worn, without feeling tight or leaving marks, but also further enhances the leak-proof effect, as the more fitted crotch area 2 can better contain and retain liquids, reducing the risk of leakage. In addition, adjusting the outer edge of the support part 43 to fold onto the outer side of the gusset and crotch area can strengthen the gusset 42 and reduce the risk of leakage due to gusset deformation.
[0038] Furthermore, gaps 44 are formed between the two ends of the edging 42 and the adjustment support 43. The edging 42 can naturally bend along the curvature of the groin. The presence of gaps 44 avoids excessive friction between the edging 42 and the skin of the groin, reducing problems such as redness, itching, or even damage caused by friction. At the same time, it ensures that the edging 42 can fit tightly against the groin, effectively preventing leakage of secretions.
[0039] Furthermore, the widened crotch area 2 of the disposable underwear can increase the adhesive area of the sanitary napkin, allowing it to fit more tightly to the crotch area 2 of the disposable underwear, reducing the risk of displacement or falling off due to activity or friction, and preventing side or back leakage.
[0040] The connecting part 41, the surrounding edge 42, and the adjusting support part 43 are an integrally cut structure.
[0041] The integrated design of the connecting part 41, the surrounding part 42 and the adjusting support part 43 not only reduces the risk of leakage at the seam and ensures the reliability of the leak-proof effect, but also further improves the user's experience and prevents the seam from rubbing against the inner thigh, which can lead to redness, swelling, pain or even skin breakage.
[0042] The outer surface of the support adjustment part 43 is provided with a rough surface area 431 and a hook surface area 432 from the inside to the outside.
[0043] It is worth noting that the surface of the hook layer has tiny hook-like structures, while the surface of the napped layer has a soft fibrous ring structure. Therefore, when the hook layer and the napped layer come close to each other, the hook-like structures can hook onto the fibrous ring structure, thereby forming a mechanical bond. The outer side of the adjustment support can be folded up without glue, thereby adjusting the width of the crotch 2.
[0044] When the width of the widened part 42 needs to be adjusted, the widened part 42 can be torn outward to quickly separate the outer side of the widened part 42 from the outer side of the crotch part 2, achieving a repeated opening and closing effect, avoiding the problem of traditional adhesive failure after use, and extending the product's service life.
[0045] Furthermore, since the hook-and-loop areas and the looped areas have a certain area range, users can flexibly choose the bonding position of the hook and loop according to their actual needs and body feel, thereby achieving precise adjustment of the crotch width. For example, during periods of heavy menstrual flow, the folding range of the support adjustment part 43 can be appropriately reduced to enhance the leak-proof effect; during daily wear, the folding range of the support adjustment part 43 can be increased to avoid the feeling of constriction caused by an overly wide crotch 2.
[0046] The adjustment support part 43 has a near-circular structure.
[0047] In traditional underwear production, if an irregularly shaped or complex adjustable support section is used, a significant amount of waste material will inevitably be generated during the material cutting process to fit its contour. In contrast, a near-circular structure is relatively regular and can be more closely arranged on the raw material during cutting, maximizing the utilization of the raw material's surface area.
[0048] The leak-proof edging 4 is made of pure cotton non-woven fabric.
[0049] Pure cotton nonwoven fabric has excellent skin-friendliness. Its fiber structure is soft and delicate, and it will not cause friction or irritation when in contact with the skin, providing women with a safe and comfortable wearing experience. It is especially suitable for people with sensitive skin or women during special periods such as menstruation.
[0050] Moreover, the texture of pure cotton non-woven fabric is soft and lightweight, and you can hardly feel its presence when it comes into contact with the skin. Unlike some hard or rough materials, it will not bring a sense of restraint or discomfort to the body, further improving the user experience.
[0051] Both the front waist 1 and the rear waist 3 are provided with S-shaped elastic bands 5 at the end near the crotch 2;
[0052] Both the front waist 1 and the rear waist 3 are provided with waist elastic bands 51 at the ends away from the crotch 2.
[0053] The S-shaped elastic band 5, with its curved structure, naturally conforms to the transition area between the crotch 2 and the buttocks, abdomen, and crotch 2, avoiding the pressure felt by traditional straight elastic bands on the crotch 2 and reducing friction and discomfort. The waist elastic band 51 provides high-elasticity support, ensuring that the upper edge of the underwear fits snugly against the waist skin, preventing it from slipping or shifting. When the user walks or sits, the S-shaped elastic band and the waist elastic band 51 work together to dynamically adjust the fabric tension, reducing discomfort caused by changes in body posture.
[0054] The overlapping area of the front waist part 1 and the rear waist part 3 is provided with wear-reducing holes 52 at intervals. The wear-reducing holes 52 are used to reduce the hardness of the overlapping area of the front waist part 1 and the rear waist part 3.
[0055] The anti-friction perforation 52 cleverly reduces the stiffness at the overlap of the front waistband 1 and the back waistband 3, making the underwear softer and more body-hugging when worn. When women are active, the overlap of the front waistband 1 and the back waistband 3 will not put excessive pressure and friction on the skin, reducing discomfort caused by friction and making the wearing experience more comfortable and free.
[0056] The main body comprises, from the inside out, an inner nonwoven fabric 01, a supporting nonwoven fabric 02, an absorbent lining 03, and an outer nonwoven fabric 04.
[0057] The inner non-woven fabric 01 is preferably made of pure cotton, enhancing tactile comfort and making it especially suitable for sensitive skin. The supporting non-woven fabric 02 provides three-dimensional support, maintaining the underwear's shape and preventing deformation or sagging due to the expansion of the absorbent layer, thus enhancing the fit. The absorbent lining 03 efficiently absorbs and locks in liquids while keeping the surface dry and reducing stuffiness. The outer non-woven fabric 04 not only prevents liquid spills but also prevents the fabric from sticking to clothing, improving the overall neatness of the garment.
[0058] The outer nonwoven fabric 04 is folded inward to form a folded part, and the inner wall of the folded part is bonded to the inner wall of the inner nonwoven fabric 01. The waist elastic band 51 is provided in the folded part.
[0059] The folded part of the outer non-woven fabric 04 is attached to the inner wall of the inner non-woven fabric 01, which is equivalent to adding a reinforcing structure to the edge of the fabric to prevent the fabric from loosening or deforming due to body movement or washing, thus extending the product's service life.
[0060] The waist elastic band 51 is located inside the folded part. The folded part can evenly distribute the elasticity of the waist elastic band 51 to the waist area, avoiding localized tightness and further improving overall comfort.
[0061] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without any inventive effort, and these embodiments will all fall within the scope of protection of this utility model.
Claims
1. A disposable women's underwear, characterized in that, Includes a main body, which includes a front waist, a crotch, and a back waist, with the crotch connecting the front waist and the back waist; The left and right sides of the front waist and the back waist are bonded together to form a ring structure, and the left and right sides of the crotch are provided with leak-proof edging. The leak-proof edging includes a connecting part, an edging, and an adjusting support part. The connecting part is used to connect with the crotch area. The outer side of the connecting part is connected to the inner side of the edging. The outer side of the edging is connected to the adjusting support part. The edging has an arc-shaped structure. There is a gap between the two ends of the arc-shaped structure and the adjusting support part. The edging is used to widen the crotch area.
2. The disposable women's underwear according to claim 1, characterized in that, The connecting part, the surrounding edge, and the adjusting support part are an integrally cut structure.
3. The disposable women's underwear according to claim 1, characterized in that, The outer surface of the adjustment support is provided with a rough surface area and a hook surface area from the inside to the outside.
4. The disposable women's underwear according to claim 2, characterized in that, The adjustment support has a near-circular structure.
5. A disposable women's underwear according to claim 1, characterized in that, The leak-proof edging is made of pure cotton non-woven fabric.
6. A disposable women's underwear according to claim 1, characterized in that, Both the front waist and the rear waist near the crotch are provided with S-shaped elastic bands. Both the front waist and the back waist have elastic waistbands at the ends furthest from the crotch.
7. A disposable women's underwear according to claim 1, characterized in that, The overlapping area of the front waist and the rear waist is provided with friction-reducing holes at intervals, which are used to reduce the hardness of the overlapping area of the front waist and the rear waist.
8. A disposable women's underwear according to claim 6, characterized in that, The main body comprises, from the inside out, an inner nonwoven fabric lining, a supporting nonwoven fabric, an absorbent lining, and an outer nonwoven fabric layer.
9. A disposable women's underwear according to claim 8, characterized in that, The outer nonwoven fabric is folded inward to form a folded section, and the inner wall of the folded section is bonded to the inner wall of the inner nonwoven fabric. The waist elastic is provided in the folded section.