Disposable underpants

Abstract

The utility model discloses disposable underpants which are provided with an underpants body, a first sheet, a second sheet and a plurality of elastic plied yarns, wherein the first sheet and the second sheet are arranged in a front waistline area, a rear waistline area and a crotch area, and the elastic plied yarns are arranged between the first sheet and the second sheet and extend in the transverse direction. The denier number of the elastic plied yarns is 20-300 deniers, the multiple elastic plied yarns are arranged at intervals, and the average plied yarn interval is 0.5-3 mm; the elastic bodies are arranged in the front waistline area and the rear waistline area and used for improving the elasticity of the waist; and a skin-friendly sheet fixed to the crotch region. The elastic plied yarns in the underpants body are arranged by adopting the elastic plied yarns far lower than the existing elastic dart and far lower than the existing average spacing, namely the denier number of the elastic plied yarns is 20-300 deniers, and the average spacing of the plied yarns is 0.5-3mm, so that the fitting effect is obviously improved, and the air permeability is good.

Description

Technical Field

[0001] This patent relates to the field of clothing, and is particularly applicable to disposable underwear products with non-woven fabrics as the main fabric. Background Art

[0002] Underwear is a common garment worn next to the skin and is generally not exposed to the outside, so its design is based on comfort and convenience. Because underwear is worn directly next to the skin and is in direct contact with sensitive skin, it needs to be changed and washed frequently, but it is difficult to ensure timely change and washing of underwear when traveling. Therefore, a disposable underwear that is easy to change and does not require washing has appeared on the market. In the prior art, disposable underwear with non-woven fabric as the main fabric is mostly made of ordinary non-woven fabric, and the material does not have elasticity, so the overall comfort and fit are poor, and it does not fit the human body curve well when worn, and the skin-fitting effect is not ideal. In addition, when the existing ultrasonic equipment welds the side, the sealing width is generally more than 5mm and the feel is hard, which seriously affects the appearance and comfort of the product.

[0003] For example, Chinese patent announcement number CN219182835U discloses a disposable underpants, which is provided with an elastic body at the front waistline and the rear waistline, and the elastic body is a plurality of thin-denier elastic bands arranged at intervals, the number of which is 8-10. Although the above patents make it fit the human body by the provision of the elastic body, since the underpants body itself is not elastic, it is necessary to separately configure elastic elements in the inner layer, so the fit effect with the human body is poor. The use of the existing known high-decite and relatively large elastic spacing elastomer will lead to increased skin marks and reduced comfort. In addition, the use of the existing known elastic film complex can greatly improve the fit effect, but the air permeability is not ideal.

[0004] For another example, Chinese patent publication number CN211153825U discloses a composite elastic disposable underwear. This patent composites an elastic non-woven fabric layer on the inner side of a non-woven fabric outer layer and utilizes the elastic force of the elastic non-woven fabric layer to make the main structure of the disposable underwear elastic and enhance the fit of the product. However, the use of the existing known high-decitex and relatively large elastic spacing elastomer will lead to increased skin marks and reduced comfort. Utility Model Content

[0005] The utility model aims to provide a disposable underwear product which is highly comfortable, breathable and can meet the requirements of batch and automatic production.

[0006] The utility model solves the technical problem by adopting the following technical scheme: disposable underwear has mutually orthogonal front-back direction, lateral direction and up-down direction, and has front waist region, back waist region and crotch region, waist opening is formed by the front waist region and back waist region, and leg opening is formed by the front waist region, back waist region and crotch region, and has: underwear body, which has first sheet material and second sheet material arranged in the front waist region, back waist region and crotch region, and multiple elastic strands arranged between the first sheet material and the second sheet material and extending in the lateral direction, the denier of the elastic strands is 20 denier-300 denier, the multiple elastic strands are arranged at intervals, and the average strand spacing is 0.5mm-3mm; elastic body, which is arranged in the front waist region and the back waist region and is used to improve waist elasticity; and skin-friendly sheet, which is fixed in the crotch region. By adopting the above technical solution, the elastic strands in the underwear body are arranged with elastic strands with much lower elastic decimeter than the existing ones and much lower than the existing average spacing, so that the fitting effect is significantly improved, and the breathability is better than that of the existing elastic film material. The underwear body composed of the first sheet material, the second sheet material, and a plurality of elastic strands can directly use the elastic material that has been composited, or it can be manufactured online. If it is necessary to increase the stiffness of the product, other sheets can be added between the first and second sheets to increase the gram weight of the body while increasing the stiffness of the product. Furthermore, the material gram weight range of the underwear body is 30g / m 2 -160g / m 2 Compared with low-weight materials, high-weight underwear has higher stiffness, while low-weight underwear has thin and soft characteristics. The elastic strands can be fixed by ultrasonic waves, hot melt adhesive or a combination thereof.

[0007] As one embodiment of the present invention, the material weight of the underwear body is 65g / m 2 -75g / m 2 As another embodiment of the present invention, the material weight of the underwear body is 100g / m 2 -120g / m 2 Since the latter has a larger square grammage than the former, it can be achieved by selecting different materials, applying glue, or the number of material layers, or a combination thereof.

[0008] Affected by factors such as the reduction in the average strand spacing, the air permeability of the underwear body material will be weakened to a certain extent, so the air permeability of the underwear body material is less than 3m / s. However, this degree of weakening does not have a significant impact on the comfort when wearing, so the air permeability is not less than 0.075m / s. As one embodiment of the utility model, the air permeability of the underwear body material is less than 2m / s; as another embodiment of the utility model, the air permeability of the underwear body material is less than 1m / s. Furthermore, the tensile strength of the underwear body material is greater than or equal to 1kN / m.

[0009] Since a skin-friendly sheet is also arranged in the crotch area, in order to prevent the edge of the crotch area from curling, the elasticity of the underwear body in the crotch area should be smaller than that in the front waist area and the back waist area. This can be achieved by using processes such as tension-free conveying, tension release or local point breaking in the crotch area.

[0010] Furthermore, after the panty body is sealed at both sides of the front and rear waist regions, a sealing edge is formed, which is formed by heat pressing welding or ultrasonic welding. When the sealing edge is formed by ultrasonic welding, the width of the sealing edge is preferably 1mm-3mm.

[0011] Furthermore, in order to further improve the elasticity of the waist, an additional elastic body needs to be applied, so the underwear body can be wrapped with spandex, or an additional layer of material can be added to cover the spandex. In addition, other elastic materials can be used to improve the elasticity of the waist, such as elastic film or elastic fabric to replace spandex. In summary, the elastic body uses any one of spandex, elastic film or elastic fabric, or a combination thereof.

[0012] Furthermore, the shape of the skin-friendly sheet can be roughly matched with the outline of the leg opening, and of course other shapes can be used, such as rectangular, oval or special shapes, etc. The front and rear ends of the skin-friendly sheet are preferably fixed by ultrasonic method.

[0013] Furthermore, the underwear body is elastic in the lateral direction, but not elastic in the front-to-back direction and the up-down direction.

[0014] Beneficial effects of the utility model: The utility model adopts elastic strands with much lower elastic decimeters and much lower average spacing in the underwear body, that is, the elastic strand denier is 20-300 deniers, and the average strand spacing is 0.5mm-3mm, so that the fitting effect is significantly improved and the air permeability is good. The lateral sides of the waist area of ​​the underwear body are welded by ultrasonic welding and cutting technology, which ensures the welding strength while controlling the sealing edge width to 1mm-3mm, greatly improving the aesthetics and softness of the product.

[0015] The present invention will be described in more detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a product diagram of the present utility model.

[0017] Figure 2 It is an expanded view of the utility model.

[0018] Figure 3 for Figure 2 sectional view of .

[0019] Figure 4 for Figure 3 A partial enlarged view of . DETAILED DESCRIPTION

[0020] This embodiment describes in detail an underpants body having a larger number of elastic strands with lower denier and smaller spacing. The disposable underpants manufactured using the underpants body have better fit and breathability and can meet the requirements of batch and automated production.

[0021] The following terms can help understand this application.

[0022] The "disposable underwear" in this application refers to underwear products that are made of non-woven fabrics as the main material and are not reused. According to the hygiene requirements, they are divided into ordinary grade and sterilization grade. Children's disposable underwear should also meet the relevant requirements of GB 31701.

[0023] "Decitex", symbolized as dtex or "denier", is a measurement used in the textile industry, which refers to the weight of 10,000 meters of fiber or yarn at a specified moisture regain.

[0024] "Average strand spacing" refers to the distance between the two ends of the elastic strands in the same cross section, divided by the number of strands in the cross section minus one.

[0025] "Tensile strength" refers to the maximum tension that a sample per unit width can withstand before breaking. The "tensile strength" in this application refers specifically to the average tensile strength of the sample in the longitudinal and transverse directions. The tensile strength is measured in accordance with GB / T 12914, with an effective clamping distance of 100 mm, a sample width of 15 mm, and a constant speed tensile method.

[0026] "Air permeability" refers to the rate at which air flows vertically through a specified test area within a certain period of time under a specified pressure difference. Air permeability is measured in accordance with GB / T 28005, with a pressure drop of 100Pa and a sample area of ​​20cm 2 .

[0027] Embodiment 1,

[0028] Please also read Figures 1 to 4The disposable underpants 100 have mutually orthogonal front and rear directions, lateral directions and up and down directions, and have a front waist region 101, a rear waist region 102 and a crotch region 103. The front waist region 101 and the rear waist region 102 form a waist opening 104, and the front waist region 101, the rear waist region 102 and the crotch region 103 form a leg opening 105. The disposable underpants 100 include an underpants body 1, an elastic body 2 and a skin-friendly sheet 3.

[0029] The underpants body 1 has a first sheet 11 and a second sheet 12 arranged in the front waist region 101, the rear waist region 102 and the crotch region 103, and a plurality of elastic strands 13 arranged between the first sheet 11 and the second sheet 12 and extending in the transverse direction. The denier of the elastic strands 13 is 100 deniers, and the plurality of elastic strands 13 are arranged in parallel and spaced apart, and the average strand spacing is 1 mm. After the underpants body 1 is sealed at both lateral sides of the front waist region 101 and the rear waist region 102, a sealing edge is formed, and the sealing edge is formed by ultrasonic welding, and the width of the sealing edge (not shown in the figure) is 2 mm. The material weight of the underpants body 1 is 70±5 g / m 2 , tensile strength is greater than 1kN / m, and material air permeability is 1.5m / s-2m / s.

[0030] The elastic body 2 is arranged on the front waist region 101 and the back waist region 102 by folding the underwear body 1 inward. The elastic body 2 can be a structure of multiple spandex yarns, where the spacing between the multiple spandex yarns is greater than or equal to the average strand spacing of the elastic strands in the underwear body 1. Figure 3 , 4 As shown, the elastic strands 13 at the fold of the underwear body 1 are not shown.

[0031] The skin-friendly sheet 3 is fixed on the crotch area near the wearer's contact side. Before the skin-friendly sheet 3 is combined with the panty body 1 in the crotch area, the area should be in a tension-free state to avoid curling around the periphery as much as possible. At the same time, the skin-friendly sheet 3 also has a shape that is generally compatible with the contour of the leg opening. The front and rear ends of the skin-friendly sheet 3 are fixed by ultrasound, and most of the area is fixed by gluing.

[0032] Embodiment 2,

[0033] In order to improve the stiffness of the product, the underwear body 1 has at least one layer of breathable third sheet material disposed between the first sheet material 11 and the second sheet material 12 in addition to the first sheet material 11, the second sheet material 12 and the plurality of elastic strands 13 in Example 1. The material weight of the underwear body 1 is 110±10 g / m 2 , the air permeability of the material is less than 1m / s. The width of the sealing edge is 3mm. The rest is the same as in Example 1.

[0034] The above is an exemplary description of the utility model in conjunction with the accompanying drawings. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model; or the above concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A disposable underpants having mutually orthogonal front-back direction, lateral direction and up-down direction, and having a front waist region, a rear waist region and a crotch region, a waist opening formed by the front waist region and the rear waist region, and a leg opening formed by the front waist region, the rear waist region and the crotch region, characterized in that: have: The underwear body comprises a first sheet material and a second sheet material disposed in a front waist region, a rear waist region and a crotch region, and a plurality of elastic strands disposed between the first sheet material and the second sheet material and extending in a transverse direction; the denier of the elastic strands is 20-300 deniers, the plurality of elastic strands are arranged at intervals, and the average strand spacing is 0.5 mm-3 mm; Elastic bodies are arranged in the front waistline area and the back waistline area to improve the elasticity of the waist; and a skin-friendly sheet fixed to the crotch area.

2. The disposable underwear according to claim 1, characterized in that: The material weight range of the underwear body is 30g / m 2 -160 g / m 2 .

3. The disposable underwear according to claim 1, characterized in that: The material weight of the underwear body is 65g / m 2 -75g / m 2 .

4. The disposable underwear according to claim 1, characterized in that: The material weight of the underwear body is 100g / m 2 -120g / m 2 .

5. The disposable underwear according to claim 2, characterized in that: The air permeability of the material of the underwear body is less than 3m / s.

6. The disposable underwear according to claim 3, characterized in that: The air permeability of the material of the underwear body is less than 2m / s.

7. The disposable underwear according to claim 4, characterized in that: The air permeability of the material of the underwear body is less than 1m / s.

8. The disposable underpants according to any one of claims 1 to 7, characterized in that: The material tensile strength of the underwear body is greater than or equal to 1 kN / m.

9. The disposable underwear according to claim 8, characterized in that: The underwear body further has at least one third sheet material disposed between the first sheet material and the second sheet material.

10. The disposable underwear according to claim 8, characterized in that: The underwear body is sealed at both lateral sides of the front waistline area and the back waistline area to form a sealed edge, and the width of the sealed edge is 1mm-3mm.

11. The disposable underpants according to claim 8, characterized in that: The elasticity of the underwear body in the crotch area is smaller than that in the front waist area and the back waist area.

12. The disposable underwear according to claim 1, characterized in that: The elastic body is any one of spandex yarn, elastic film or stretch fabric or a combination thereof.

13. The disposable underpants according to claim 1, characterized in that: The underwear body is elastic in the transverse direction, but not elastic in the front-back direction and the up-down direction.

14. The disposable underpants according to claim 1, characterized in that: The skin-friendly sheet is rectangular, oval or has a shape that matches the contour of the leg opening.

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