Absorption core and disposable underpants

Abstract

The utility model discloses an absorption core body and disposable underpants, the absorption core body comprises a surface layer, an absorption layer and an impermeable layer, the surface layer has hydrophilicity and hydrophobicity, and can rapidly absorb liquid and conduct the liquid downwards; the absorbing layer is made of a sheet-shaped absorbing material with a certain thickness and is used for receiving liquid from the surface layer and absorbing and storing the liquid; the sheet-shaped absorbing material is formed by mixing and solidifying a fiber high-absorptivity material and non-woven fabric fibers; and the impermeable layer is prepared from a semi-permeable barrier material which can allow water vapor to penetrate but cannot allow liquid to penetrate and is resistant to certain hydrostatic pressure, and is used for blocking liquid leakage. The disposable underpants adopting the absorption core body as the absorption piece have the advantages of being high in wearing comfort and good in air permeability, have certain absorption capacity, can meet the requirements of people with mild incontinence, and can be widely applied to the field of disposable sanitary products.

Description

Technical Field

[0001] This utility model relates to the field of underwear technology, and in particular to a disposable underwear designed for patients with mild urinary incontinence, which has high absorbency, good breathability, comfortable fit and is easy to wear. Background Technology

[0002] While mild urinary incontinence does not affect a patient's ability to take care of themselves in daily life, frequent changes of underwear or pads can be inconvenient and can easily lead to skin infections. Most disposable diapers on the market are designed for severe urinary incontinence, focusing on absorbing large amounts of urine, making them thick and unsuitable for those with mild incontinence. For patients with mild urinary incontinence, the common method is to attach absorbent pads / sheets to their regular underwear to absorb leaked urine, which can lead to over-absorption, lack of breathability, and discomfort. Utility Model Content

[0003] The purpose of this invention is to provide an absorbent core and disposable underwear using the absorbent core. The disposable underwear using the absorbent core has certain absorbency, good breathability and wearing comfort, thereby meeting the needs of people with mild incontinence.

[0004] The technical solution adopted by this utility model to solve its technical problem is: an absorbent core, comprising a surface layer, an absorbent layer and a seepage-proof layer arranged in sequence;

[0005] The surface layer is both hydrophilic and hydrophobic, enabling it to quickly absorb liquid and conduct it downwards.

[0006] The absorbent layer is composed of sheet-like absorbent material of a certain thickness, used to receive and absorb liquid from the surface; the sheet-like absorbent material is formed by mixing and solidifying a highly absorbent fibrous material with non-woven fibers.

[0007] The impermeable layer is made of a semi-permeable barrier material that allows water vapor to pass through but prevents liquid from passing through, and is used to prevent liquid leakage.

[0008] Preferably, the sheet-like absorbent material has a thickness of 0.5–2 mm and a basis weight of 30–100 g / m²; the ratio of the fibrous superabsorbent material to the nonwoven fiber material is between 1:9 and 7:3; the fibrous superabsorbent material is a sodium polyacrylate polymer, a CMC-Na graft copolymer superabsorbent resin, or a high molecular weight alginate-glycerol mixture; the nonwoven fiber is a bicomponent fiber of PE / PET, arranged in a core-sheath, island-like, or orange-segment shape.

[0009] To improve the water absorption of the intermediate layer, the nonwoven fibers are more hydrophilic than the surface material.

[0010] Preferably, the surface material is non-woven fabric, and the constituent fibers of the non-woven fabric may be partially or wholly made of natural fibers such as cotton fiber, bamboo fiber, regenerated fiber fiber, and silk fiber, with the content of natural fibers being 10% to 100%.

[0011] To improve breathability, the surface of the nonwoven fabric is provided with air pores or has an uneven surface.

[0012] To improve the dryness of the surface layer on the side in contact with the skin and enhance wearing comfort, the fibers of the surface nonwoven fabric have a hydrophilic gradient in the thickness direction, with the fibers further away from the skin contact side exhibiting higher hydrophilicity.

[0013] Preferably, the geomembrane has a basis weight of 10-40 g / m², a moisture permeability of 1500-5000 g / m², and a hydrostatic pressure resistance of 10-30 cmH₂O; the material of the geomembrane is SMMMS nonwoven fabric.

[0014] To improve air permeability, the surface layer and the impermeable layer are of equal area and size, while the area of ​​the intermediate absorbent layer is smaller than or equal to that of the two layers, and the area of ​​the absorbent layer accounts for 30% to 100% of the area of ​​the two layers.

[0015] This utility model also discloses a disposable underwear, comprising an underwear body and an absorbent component, which are fixedly connected to form a disposable underwear with an integral structure; the absorbent component adopts the aforementioned absorbent core.

[0016] The underwear body includes a waistband, a front panel, a back panel, a leg panel, and a crotch. The front panel and the back panel are connected to the front and rear ends of the waistband, respectively. The crotch is located between the lower parts of the front panel and the back panel and connects the two. The absorbent element is fixed to the skin side of the crotch.

[0017] As one embodiment of the underwear body, the waistband, front crotch, back crotch, leg crotch, and crotch are made of textile fabric, which is cut separately and then sewn together with sewing thread.

[0018] As another embodiment of the underwear body, the waistband, front panel, back panel, leg panel and crotch are made of non-woven composite material, which is cut separately and then bonded together by a suitable method such as hot pressing, ultrasonic bonding or adhesive bonding.

[0019] Preferably, the components of the aforementioned underwear body can be assembled into one piece, cut in one piece at once, and finally sewn together with the waistband.

[0020] To improve the elasticity of the underwear body and thus improve the fit between the underwear body and the human body, the nonwoven composite material includes an upper nonwoven fabric, a lower nonwoven fabric, and a group of linear elastic materials located between the upper and lower nonwoven fabrics and arranged at a certain interval.

[0021] As another embodiment, the nonwoven composite material includes an upper nonwoven fabric, a lower nonwoven fabric, and an elastic film or elastic fabric located between the upper and lower nonwoven fabrics.

[0022] To improve the fit between the leg circumference and the leg, the edge of the leg circumference is provided with an elastic leg circumference member.

[0023] To improve the breathability and comfort of the underwear, the non-woven elastic composite material has uniformly distributed through holes.

[0024] Preferably, the absorbent element is bonded to the crotch area of ​​the underwear body by means of heating and pressure, adhesive, or ultrasound; the area of ​​the absorbent element accounts for 15% to 100% of the crotch area of ​​the underwear body.

[0025] The beneficial effects of this invention are as follows: The absorbent core of this invention uses a sheet-like absorbent material formed by blending fibrous highly absorbent material with non-woven fibers. The highly efficient absorbent material exists in fibrous form, making it easier to contact, wet, and conduct liquids compared to traditional granular materials. These materials can quickly absorb and lock in large amounts of liquid, exhibiting higher absorption efficiency and faster conduction speed compared to traditional materials. Simultaneously, the sheet-like absorbent material formed by blending the fibrous highly absorbent material with non-woven fibers has an appearance and feel similar to non-woven sheets, without the granular feel of traditional absorbent cores. The numerous fiber pores between the fibers make the crotch area of ​​the underwear softer, thinner, more breathable, and less revealing. Users do not need to worry about privacy leaks due to visible shape when wearing the underwear. The fibrous sheet-like absorbent material of the absorbent component has a smaller area than the surface and waterproof layers and is cut into a shape that better conforms to the human body structure. This not only reduces the crotch area coverage and improves breathability but also reduces friction and makes it more comfortable to wear due to its body-fitting shape. This absorbent core is lightweight and combines absorbency with breathability, thus meeting the needs of people with mild incontinence.

[0026] The absorbent component is firmly bonded to the underwear body through methods such as heating and pressure, environmentally friendly adhesives, and ultrasound, forming an integrated structure that improves stability and durability. This design avoids the problem of absorbent components easily shifting or falling off in traditional underwear, ensuring that it always fits the wearer's body during use and improving wearing comfort.

[0027] The present invention will be described in more detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0028] Figure 1 A cross-sectional view of the absorber core in this utility model. Figure 1 .

[0029] Figure 2A cross-sectional view of the absorber core in this utility model. Figure 2 .

[0030] Figure 3 This is a schematic diagram of the shape of the absorption layer in this utility model.

[0031] Figure 4 This is a schematic diagram of the structure of the disposable underwear in this utility model. Figure 1 .

[0032] Figure 5 This is a schematic diagram of the structure of the disposable underwear in this utility model. Figure 2 .

[0033] Figure 6 This is a partial cross-sectional view of the underwear body in Embodiment 3 of this utility model.

[0034] Figure 7 This is a schematic diagram showing the arrangement of the waist elastic component in this utility model.

[0035] Figure 8 This is a partial cross-sectional view of the underwear body in Embodiment 4 of this utility model.

[0036] Figure 9 This is a structural diagram of the disposable underwear in its unfolded state according to this utility model. Detailed Implementation

[0037] Example 1: As Figure 1 , Figure 2 As shown, an absorbent core is used in the field of disposable absorbent hygiene products, especially suitable for underwear-type disposable hygiene products. Its function is to absorb bodily secretions, thereby improving the wearing comfort of disposable hygiene products. The absorbent core includes a surface layer 1, an absorbent layer 2, and a leak-proof layer 3, stacked sequentially. The surface layer 1 is hydrophilic and hydrophobic, capable of quickly absorbing liquid and conducting it downwards. The absorbent layer 2 is composed of a sheet-like absorbent material of a certain thickness, used to receive and absorb liquid from the surface layer; the sheet-like absorbent material is formed by mixing highly absorbent fibrous materials with non-woven fibers and then solidifying them. The leak-proof layer 3 is made of a semi-permeable barrier material that allows water vapor to pass through but prevents liquid from passing through, and is resistant to a certain hydrostatic pressure, used to prevent liquid leakage.

[0038] The surface layer 1 can be made of various textile fabrics or non-woven materials commonly used in the textile industry. The textile fabrics are preferably made from natural sources such as pure cotton, bamboo fiber, regenerated fiber, and silk. The non-woven material used in the surface layer 1 can be any type of non-woven material known within the industry's technical scope, including but not limited to hot-air non-woven fabric, spunbond non-woven fabric, and spunlace non-woven fabric. The non-woven fibers constituting the surface layer 1 can be partially or entirely made from natural sources such as cotton fiber, bamboo fiber, regenerated fiber, and silk fiber, with the natural fiber content ranging from 10% to 100%.

[0039] To improve the breathability of the surface layer, the surface of the non-woven fabric is provided with ventilation holes or has an uneven vertical structure. The ventilation holes may penetrate the entire surface layer 1 or not. This structural design creates an air circulation channel between the skin and the surface layer 1 of the absorbent core, improving breathability when worn.

[0040] To improve the dryness of the surface layer 1 in contact with the skin, the fibers of the surface nonwoven fabric exhibit a hydrophilic gradient along the thickness direction of surface layer 1, with higher hydrophilicity towards the skin contact side. For example, the upper layer 101 of the surface nonwoven fabric is made of 2D ordinary hydrophilic ES hot-air fiber, and the lower layer 102 is made of 4-6D polyphilic ES coarse denier fiber. Figure 2 As shown. This creates a continuous dispersion of liquid in the thickness direction, which quickly guides the absorbed urine / secretions to the absorbent layer 2, while the fibers on the side in direct contact with the skin, due to their relatively low hydrophilicity, further improve the surface dryness during use.

[0041] The absorbent material 2 uses a sheet-like absorbent material, which is a sheet-like material of a certain thickness formed by mixing and solidifying fibrous highly absorbent material with non-woven fibers. Because the absorbent layer uses fibrous highly absorbent material, it is indistinguishable from ordinary non-woven materials in appearance and feel, without the granular foreign body sensation associated with granular absorbent materials. Furthermore, this sheet-like absorbent material has a three-dimensional spatial mesh structure, which greatly improves breathability during use. At the same time, it feels lighter and more comfortable, without the foreign body sensation and heaviness found in traditional absorbent materials using fluff pulp, and conforms more closely to the body.

[0042] The sheet-like absorbent material has a thickness of 0.5–2 mm and a basis weight of 30–100 g / m². The ratio of fibrous superabsorbent material to nonwoven fiber material ranges from 1:9 to 7:3. The fibrous superabsorbent material is composed of substances with good hydrophilicity and excellent absorption performance, such as sodium polyacrylate polymers with a certain degree of crosslinking, CMC-Na grafted copolymer superabsorbent resins, and high molecular weight alginate-glycerol mixtures. The nonwoven fiber serves as the skeletal support structure of the sheet-like absorbent material, providing attachment points for the superabsorbent fiber and three-dimensional space for expansion after absorption. The nonwoven fiber is a bicomponent fiber composed of PE / PET, and its arrangement can be core-sheath, island-shaped, or orange-segment-shaped. Furthermore, the nonwoven fiber can be composed of two or more fibers of different thicknesses. The nonwoven fiber undergoes hydrophilic treatment, and its hydrophilicity is slightly higher than that of the surface layer 1 material.

[0043] The impermeable layer 3 uses a semi-permeable barrier material that allows water vapor to pass through but prevents liquid from passing through, ensuring air circulation and reducing moisture accumulation. When using such a sheet, a comfortable wearing experience is achieved because moisture can permeate. Generally, the impermeable layer 3 can use a stretched PE cast film material containing calcium carbonate particles. Preferably, a special barrier nonwoven material, such as SMMMS nonwoven fabric, is used. The impermeable layer 2 has a basis weight of 10–40 g / m², a moisture permeability of 1500–5000 g / m², and a hydrostatic pressure resistance of 10–30 cmH₂O.

[0044] The surface layer 1, absorbent layer 2, and impermeable layer 3 can be bonded together through heating and pressure, adhesives, or ultrasonic waves to form a robust, integrated absorbent component. To improve air permeability, the surface layer 1 and impermeable layer 3 are of equal area and size, while the area of ​​the intermediate absorbent layer 2 is smaller than or equal to that of the two layers. Overall, the area of ​​the absorbent layer 2 accounts for 30% to 100% of the total area of ​​the two layers. When a design structure is adopted in which the area of ​​the absorbent layer 2 is smaller than that of the two layers, the shape can be hourglass-shaped, triangular sector-shaped, or rectangular, etc. (Refer to...) Figure 3 Through a well-designed shape, the wearer experiences less discomfort and a better fit, while the smaller coverage area enhances breathability.

[0045] Example 2: A disposable pair of underwear, such as Figure 4 , Figure 9As shown, it has intersecting (orthogonal) "vertical," "left-right," and "front-back" directions. In the vertical direction, when the wearer is wearing disposable underwear, the side corresponding to the wearer's waist is the "upper side," and the side corresponding to the wearer's crotch is the "lower side." In the front-back direction, the side corresponding to the wearer's abdomen is the "front side," and the side corresponding to the wearer's back is the "back side." Furthermore, when the wearer is wearing the underwear-type absorbent item 1, the side in contact with the wearer's skin is the "skin side," and the opposite side is the "non-skin side."

[0046] The disposable underwear includes an underwear body 10 and an absorbent element 20. The absorbent element 20 adopts the absorbent core structure described in Example 1 and is used to absorb liquids excreted by the human body. The underwear body 10 is stacked on the absorbent element 20 in the front-to-back direction and joined together by a bonding process to form a disposable underwear with an integral structure.

[0047] The underwear body 10 includes a waistband 11, a front panel 12, a back panel 13, leg openings 14, and a crotch area 15. The waistband 11 is located at the top of the disposable underwear and includes a front waistband 111 corresponding to the wearer's abdomen and a back waistband 112 corresponding to the wearer's back. The left and right sides of the front waistband 111 and back waistband 112 are sealed together, forming a ring-shaped waist opening on the disposable underwear. The front panel 12 is connected below the front waistband 111, and the back panel 13 is connected below the back waistband 112. The front panel 12 and back panel 13 are sealed together on the sides aligned with the front waistband 111 and back waistband 112. The crotch area 15 is located below and between the front panel 12 and back panel 13 and connects the front panel 12 and back panel 13. The leg portion 14 includes a left leg portion 141 extending from the lower edge of the left sealing portion of the front panel 12 toward the crotch portion 15 and passing through the left edge of the crotch portion 15 to the lower edge of the left sealing portion of the rear panel 13, and a right leg portion 142 extending from the lower edge of the right sealing portion of the front panel 12 toward the crotch portion 15 and passing through the right edge of the crotch portion 15 to the lower edge of the right sealing portion of the rear panel 13.

[0048] The waistband 11, front panel 12, back panel 13, leg panel 14, and crotch 15 are made of textile fabric, each cut separately and then sewn together. Alternatively, they can be cut into one piece along the edge of the disposable underwear and then sewn together using the waistband.

[0049] Specifically, the connection method employs sewing, including edge sealing followed by sewing. This edge sealing and sewing method is the same as those used in the garment manufacturing industry and is well-known and mastered. The waistband 11 of the underwear body 10 is provided with a waist elastic member 16, and the leg opening 14 of the underwear body 10 is provided with a leg elastic member 17 to ensure a close fit when worn. The waist elastic member 16 and leg elastic member 17 are preferably made of linear or strip-shaped elastic bands. The upper edge of the waistband 11 is folded inward to enclose the waist elastic member 16 and sewn together with sewing thread. Similarly, the edge of the leg opening 14 is folded inward to enclose the leg elastic member 17 and sewn together with sewing thread.

[0050] The absorbent element 20 is positioned and sewn to the crotch area 15 of the underwear body 10 via a sewing machine, and the waterproof layer 3 of the absorbent element 20 is in close contact with the underwear body 10. The size and area of ​​the absorbent element 20 are equal to the size of the crotch area 15 of the underwear body 10. The absorbent element 20, which is the same size as the crotch area 15, can absorb approximately 3-5 ml of urine. Because this disposable underwear is a product with low absorbency designed for mild urinary incontinence, while ensuring that the absorbent element has a certain ability to absorb liquid and keep the inside dry, it is also important to ensure that the overall thickness of the absorbent element is relatively thin, so as to better fit the positioning of the underwear and ensure wearing comfort.

[0051] Because the absorbent element 20 and the underwear body 10 are integrated into one piece, the user can wear it directly without needing to attach absorbent materials to the underwear, making it particularly convenient to use and providing a more intimate and discreet fit. Furthermore, because the absorbent core of the absorbent element 20 uses a sheet-like absorbent material, the thickness of the absorbent element 20 is significantly reduced, greatly minimizing the feeling of bulges or foreign objects in the crotch area during wear. In addition, the absorbent layer 2 material has a more porous structure, allowing airflow to pass through more easily, thereby improving breathability and comfort during use.

[0052] Example 3: A disposable pair of underwear, such as Figure 5 , Figure 9 As shown, the underwear includes a main body 10 and an absorbent element 20. The main body 10 includes a waistband 11, a front panel 12, a back panel 13, leg openings 14, and a crotch area 15. The main body 10 is made of a non-woven composite material, comprising an upper non-woven fabric 1001, a lower non-woven fabric 1002, and a group of linear elastic materials 1003 arranged at certain intervals between the upper and lower non-woven fabrics 1001 and 1002. Figure 6As shown, spandex yarn is preferably used. The linear elastic material 1003 extends along the left-right direction of the underwear body 10. The linear elastic material 1003 is bonded and fixed to the upper non-woven fabric 1001 and the lower non-woven fabric 1002 by hot melt adhesive spraying. To improve the breathability of the underwear body 10, the non-woven composite material has uniformly distributed through holes 18, such as... Figure 6 As shown.

[0053] The waist section 11, front panel 12, rear panel 13, leg section 14, and crotch section 15 can be cut as a whole in one go, and then sewn together by waist stitching or cut separately and then bonded together by suitable methods such as heat pressing, ultrasonic bonding, or adhesive bonding.

[0054] The front waistband 111 folds inward along its edge away from the crotch 15 to form a front waistband fold 113. The rear waistband 112 folds inward along its edge away from the crotch 15 to form a rear waistband fold 114. Elastic waistband members 16 are provided between the front waistband fold 113 and the front waistband 111, and between the rear waistband fold 114 and the rear waistband 112, thereby facilitating proper coverage of the elastic body. (Reference) Figure 7 The waist elastic member 16 is preferably made of coarse denier spandex yarn, which has greater elasticity than linear elastic material 1003, and the number of elastomers is 6-12. This provides sufficient elasticity and a close fit to the waist area, preventing it from slipping down during use.

[0055] The absorbent element 20 is bonded to the crotch area 15 of the underwear body 10 by means of heating and pressure, adhesives, or ultrasound. Other aspects are the same as in Embodiment 2.

[0056] Example 4: A disposable pair of underwear, such as Figure 5 , Figure 9 As shown, the underwear includes a panty body 10 and an absorbent element 20. The panty body 10 includes a waistband 11, a front panel 12, a back panel 13, leg openings 14, and a crotch area 15. The panty body 10 is made of a non-woven composite material, comprising an upper non-woven fabric 1001, a lower non-woven fabric 1002, and an elastic film or elastic fabric 1004 located between the upper and lower non-woven fabrics 1001 and 1002, such as... Figure 8 As shown. This structure allows the entire underwear body to have good and uniform elasticity, which helps to better fit the human body and increase the wrapping effect when worn, thereby improving wearing comfort. Preferably, the upper non-woven fabric 1001 and the lower non-woven fabric 1002 are fixedly connected to the inner elastic film or elastic fabric 1004 by ultrasonic waves. Other aspects are the same as in Embodiment 3.

[0057] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention; or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. An absorbent core, characterized in that, It includes a surface layer, an absorbent layer, and a waterproof layer that are stacked sequentially; The surface layer is both hydrophilic and hydrophobic, enabling it to quickly absorb liquid and conduct it downwards. The absorbent layer is composed of sheet-like absorbent material of a certain thickness, used to receive and absorb liquid from the surface; the sheet-like absorbent material is formed by mixing and solidifying a highly absorbent fibrous material with non-woven fibers. The impermeable layer is made of a semi-permeable barrier material that allows water vapor to pass through but prevents liquid from passing through, and is used to prevent liquid leakage.

2. The absorbent core as described in claim 1, characterized in that: The sheet-like absorbent material has a thickness of 0.5~2mm and a basis weight of 30~100g / ㎡.

3. The absorbent core as described in claim 1, characterized in that: The ratio of the highly absorbent fiber material to the nonwoven fiber ranges from 1:9 to 7:

3.

4. The absorbent core as described in claim 1, characterized in that: The highly absorbent fiber material is a sodium polyacrylate polymer, a CMC-Na grafted copolymer highly absorbent resin, or a high molecular weight alginate-glycerol mixture.

5. The absorbent core as described in claim 1, characterized in that: The nonwoven fabric fibers are bicomponent fibers composed of PE / PET, and are arranged in a core-sheath, island-like, or orange-segment shape.

6. The absorbent core as described in claim 5, characterized in that: The nonwoven fibers have higher hydrophilicity than the surface material.

7. The absorbent core as described in claim 1, characterized in that: The surface material is non-woven fabric. The constituent fibers of the non-woven fabric can be partially or wholly made of any one of the natural fibers selected from cotton fiber, bamboo fiber, regenerated fiber, and silk fiber, with the content of natural fibers ranging from 10% to 100%.

8. The absorbent core as described in claim 7, characterized in that: The surface of the nonwoven fabric is provided with air pores or has an uneven surface.

9. The absorbent core as described in claim 7, characterized in that: The fibers of the surface nonwoven fabric have a hydrophilic gradient in the thickness direction, and the fibers further away from the skin contact side have higher hydrophilicity.

10. The absorbent core as described in claim 1, characterized in that: The impermeable layer has a basis weight of 10~40g / ㎡, a moisture permeability of 1500~5000g / ㎡, and a hydrostatic pressure resistance of 10~30cmH2O.

11. The absorbent core as described in claim 10, characterized in that: The material of the impermeable layer is SMMMS nonwoven fabric.

12. The absorbent core as described in claim 1, characterized in that: The surface layer and the impermeable layer have the same area, while the area of ​​the intermediate absorbent layer is smaller than or equal to that of the two layers, and the area of ​​the absorbent layer accounts for 30% to 100% of the area of ​​the two layers.

13. A disposable pair of underwear, characterized in that: The underwear comprises two parts: the main body and the absorbent component, which are fixedly connected to form a disposable underwear with an integral structure; the absorbent component adopts the absorbent core as described in any one of claims 1 to 11. The underwear body includes a waistband, a front panel, a back panel, a leg panel, and a crotch. The front panel and the back panel are connected to the front and rear ends of the waistband, respectively. The crotch is located between the lower parts of the front panel and the back panel and connects the two. The absorbent element is fixed to the skin side of the crotch.

14. The disposable underwear as described in claim 13, characterized in that: The waist, front, back, leg, and crotch areas are made of textile fabric, which is cut separately and then sewn together with sewing thread.

15. The disposable underwear as described in claim 13, characterized in that: The waist, front, back, leg, and crotch sections are made of non-woven composite material, which is cut separately and then bonded together by hot pressing, ultrasonic bonding, or adhesive bonding.

16. The disposable underwear as described in claim 15, characterized in that: The aforementioned components of the underwear body can be assembled into one piece, cut in one piece at once, and finally sewn together at the waist.

17. The disposable underwear as described in claim 15, characterized in that: The nonwoven composite material includes an upper nonwoven fabric, a lower nonwoven fabric, and a group of linear elastic materials located between the upper and lower nonwoven fabrics and arranged at a certain interval.

18. The disposable underwear as described in claim 15, characterized in that: The nonwoven composite material includes an upper nonwoven fabric, a lower nonwoven fabric, and an elastic film or elastic fabric located between the upper and lower nonwoven fabrics.

19. The disposable underwear as described in claim 13, characterized in that: The edge of the leg circumference is provided with a leg circumference elastic member.

20. The disposable underwear as described in any one of claims 15 to 18, characterized in that: The nonwoven composite material has uniformly distributed through holes.

21. The disposable underwear as described in claim 13, characterized in that: The absorbent element is bonded to the crotch area of ​​the underwear body by heating and pressing, using adhesives, or ultrasonic waves.

22. The disposable underwear as described in claim 13, characterized in that: The area of ​​the absorbent element accounts for 15-100% of the crotch area of ​​the underwear body.

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