Rear leakage prevention pull-ups

Abstract

The rear leakage prevention pull-ups comprise a front waistline structure, a rear waistline structure and a crotch part, and the two ends of the crotch part are connected with the front waistline structure and the rear waistline structure respectively; the rear waistline structure comprises a first waistline layer, a first elastic body, a second waistline layer, a third waistline layer, a fourth waistline layer, a second elastic body and a fifth waistline layer which are sequentially stacked from outside to inside, the first elastic body and the second elastic body are arranged in a staggered and spaced mode, and the first elastic body and the second elastic body both protrude in the direction away from the first waistline layer. A groove structure is formed between the first elastic body and the second elastic body, and the first elastic body and the second elastic body are arranged in a staggered and spaced mode and both protrude in the direction away from the first waistline layer to form the groove structure. By means of the groove structure, when a user moves or lies down, the waist and hip curves of the user can be better adapted, the problem of rear leakage caused by the fact that urine is accumulated on the rear side of the waist is solved, and therefore the rear leakage prevention effect is remarkably improved.

Description

Technical Field

[0001] This disclosure relates to the field of hygiene products, specifically to a type of pull-up diaper that prevents back leakage. Background Technology

[0002] The traditional pull-up diapers commonly found on the market today are mostly constructed by simply bonding the inner and outer non-woven fabrics together in their waistband design. When the user is lying down to sleep, due to the special position of the body, urine is prone to accidentally leaking from the rear edge of the pull-up diaper, which increases the risk of leakage and brings inconvenience to the user's comfort and care.

[0003] A search reveals that existing technologies, such as patent CN202122262646.5, disclose a pull-up trouser, comprising a trouser body with an outermost layer of non-woven fabric. The trouser body includes a front waistband, a back waistband, and a crotch area. The two ends of the crotch area connect the front waistband and the back waistband. Both the front and back waistbands are provided with an elastic fabric and an inner non-woven fabric. The elastic fabric is attached to the outer non-woven fabric, and the inner non-woven fabric is located on the side of the elastic fabric away from the outer non-woven fabric. The crotch area has an absorbent pad, the outer side of which is attached to the outer non-woven fabric, and the two ends of the absorbent pad are located between the elastic fabric and the inner non-woven fabric. However, the above-mentioned pull-up trousers have the following drawbacks in practical applications:

[0004] Both the front and back waist areas are lined with elastic fabric and an inner non-woven fabric, with an outermost non-woven fabric layer. This structure, with an elastic fabric between the two non-woven fabric layers, may make it easier for urine to seep out from the gap between the elastic fabric and the inner non-woven fabric, especially in the back waist area, when the user moves or changes sleeping position, leading to frequent posterior leakage. Utility Model Content

[0005] To address the problems existing in the prior art, the present disclosure aims to provide a back-leakage-proof pull-up diaper. The back-leakage-proof pull-up diaper has a grooved structure that better adapts to the baby's waist and hip curves when the user is active or lying down, reducing back leakage caused by urine accumulation at the back of the waist.

[0006] The present disclosure describes a back-leaking pull-up panty, which includes a front waistband structure, a back waistband structure, and a crotch area, wherein the two ends of the crotch area are respectively connected to the front waistband structure and the back waistband structure;

[0007] The back waist structure includes a first waist layer, a first elastic body, a second waist layer, a third waist layer, a fourth waist layer, a second elastic body, and a fifth waist layer stacked sequentially from the outside to the inside. The first elastic body and the second elastic body are staggered and spaced apart, and both the first elastic body and the second elastic body protrude away from the first waist layer, so that a groove structure is formed between the first elastic body and the second elastic body.

[0008] Preferably, the first elastomer is a PE film.

[0009] Preferably, the second elastomer is spandex filament.

[0010] Preferably, the first waist layer, the second waist layer, the third waist layer, the fourth waist layer and the fifth waist layer are all non-woven fabrics.

[0011] Preferably, the width of the second waist layer is smaller than the width of the first waist layer, and the widths of the first waist layer, the third waist layer, the fourth waist layer, and the fifth waist layer are equal.

[0012] Preferably, the middle part of the crotch area is provided with an absorbent core.

[0013] Preferably, a plurality of adhesive application zones are arranged at intervals along the width direction of the rear waist structure between the third waist layer and the fourth waist layer, and an adhesive for bonding the third waist layer and the fourth waist layer is sprayed in the adhesive application zones, so that the third waist layer and the fourth waist layer have an intermittent adhesive structure.

[0014] Preferably, a glue-free zone is formed between adjacent glue application zones, and the width of the glue-free zone is less than or equal to the width of the absorbent core.

[0015] Preferably, the ratio of the area of ​​the first elastomer to the area of ​​the rear waist structure is 1:3.

[0016] The advantages of the anti-leakage pull-up pants disclosed herein are:

[0017] This disclosure discloses a back-leakage-proof pull-up diaper comprising a front waistband structure, a back waistband structure, and a crotch area. The two ends of the crotch area are respectively connected to the front waistband structure and the back waistband structure. The back waistband structure includes, from the outside to the inside, a first waistband layer, a first elastic body, a second waistband layer, a third waistband layer, a fourth waistband layer, a second elastic body, and a fifth waistband layer, stacked sequentially. The first and second elastic bodies are staggered and spaced apart, and both protrude away from the first waistband layer, forming a groove structure between them. This groove structure better adapts to the user's waist and hip curves when the user is active or lying down, reducing back leakage caused by urine accumulation at the back of the waist and effectively preventing urine from leaking backward under gravity, thus significantly improving the back-leakage prevention effect. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of a back-leaking prevention pull-up pant as described in this disclosure;

[0019] Figure 2 This is a cross-sectional view of the back waistband structure of a pull-up trouser designed to prevent back leakage, as described in this disclosure.

[0020] Explanation of reference numerals in the attached figures:

[0021] 10-Front waist structure;

[0022] 20- Rear waist structure; 201- First waist layer; 202- First elastomer; 203- Second waist structure; 204- Third waist structure; 205- Fourth waist structure; 206- Second elastomer; 207- Fifth waist structure;

[0023] 30 - Crotch area; 301 - Absorbent core. Detailed Implementation

[0024] like Figure 1 - Figure 2 As shown, the pull-up pants that prevent back leakage according to this disclosure include a front waistband structure 10, a back waistband structure 20 and a crotch 30, with the two ends of the crotch 30 connected to the front waistband structure 10 and the back waistband structure 20 respectively.

[0025] The back waist structure 20 includes a first waist layer 201, a first elastic body 202, a second waist layer 203, a third waist layer 204, a fourth waist layer 205, a second elastic body 206, and a fifth waist layer 207 stacked sequentially from the inside to the outside. The first elastic body 202 and the second elastic body 206 are staggered and spaced apart, and both the first elastic body 202 and the second elastic body 206 protrude away from the first waist layer 201, so that a groove structure is formed between the first elastic body 202 and the second elastic body 206.

[0026] The groove structure formed between the first elastic body 202 and the second elastic body 206 can better adapt to the curves of the user's waist and hips when the user is active or lying down, reducing the problem of back leakage caused by urine accumulation on the back of the waist, effectively preventing urine from leaking backward under the action of gravity, thereby significantly improving the back leakage prevention effect.

[0027] Furthermore, in this embodiment, the first elastomer 202 is a PE film; the PE film has excellent waterproof performance, which can effectively prevent urine penetration and keep the user's skin dry and comfortable. The PE film also has a certain degree of breathability, which helps to reduce the user's skin moisture and reduce the risk of skin problems such as diaper rash.

[0028] In other alternative embodiments, the first elastomer 202 may be selected as a highly water-resistant nonwoven fabric.

[0029] Furthermore, in this embodiment, the second elastomer 206 is spandex filament; the optimal number of spandex filaments is 4, and the number of spandex filaments can be adjusted according to the actual situation;

[0030] Spandex yarn is polymerized from PTMEG (polytetramethylene ether glycol) and MDI (diisocyanate). Spandex yarn has excellent elasticity and elastic recovery rate, which makes the fabrics made from it have good stretch and recovery properties. Spandex yarn has fine fineness and high strength, which can meet a variety of textile processing needs.

[0031] Furthermore, in this embodiment, the first waist layer 201, the second waist layer 203, the third waist layer 204, the fourth waist layer 205 and the fifth waist layer 207 are all non-woven fabrics; the non-woven fabrics can be heat-sealed non-woven fabrics or spunlace non-woven fabrics.

[0032] Thermally bonded nonwoven fabric is made by adding fibrous or powdered hot-melt adhesive reinforcing materials to a fiber web, and then heating, melting and cooling to reinforce it into a fabric. This type of nonwoven fabric has high strength and durability.

[0033] Spunlace nonwoven fabric is made by spraying high-pressure micro-water jets onto one or more layers of fiber web, causing the fibers to entangle together and thus strengthening the web. Spunlace nonwoven fabric is soft and skin-friendly.

[0034] Furthermore, in this embodiment, the width of the second waist layer 203 is smaller than the width of the first waist layer 201, and the widths of the first waist layer 201, the third waist layer 204, the fourth waist layer 205, and the fifth waist layer 207 are equal.

[0035] Furthermore, in this embodiment, the middle part of the crotch 30 is provided with a water-absorbing core 301 for absorbing liquid.

[0036] Furthermore, in this embodiment, multiple adhesive application areas are arranged at intervals along the width direction of the back waist structure 20 between the third waist layer 204 and the fourth waist layer 205. Adhesive for bonding the third waist layer 204 and the fourth waist layer 205 is sprayed in the adhesive application areas, resulting in an intermittent adhesive structure between the third waist layer 204 and the fourth waist layer 205. The intermittent adhesive structure increases the softness and breathability of the back waist structure 20 to a certain extent, which can reduce friction and pressure, improve wearing comfort, and allow for a certain amount of stretch space between the waist layers, which can better adapt to changes in the user's body shape and reduce the feeling of restraint and discomfort caused by changes in body shape. From a production perspective, the intermittent adhesive structure can reduce the amount of adhesive used compared to a fully bonded structure, thereby reducing production costs. At the same time, this adhesive application method also simplifies the production process and improves production efficiency and product qualification rate.

[0037] The adhesive can be a hot melt adhesive, which has good adhesion, heat resistance and water resistance; in other alternative embodiments, glue can also be sprayed.

[0038] Furthermore, in this embodiment, a glue-free area is formed between adjacent glue application areas. The width of the glue-free area is less than or equal to the width of the absorbent core 301, which can reduce the impact of glue application on the core and reduce the impact of excessive glue application on the composite effect of the third waist layer 204 and the fourth waist layer 205.

[0039] Furthermore, in this embodiment, the ratio of the area of ​​the first elastic body 202 to the area of ​​the rear waist structure 20 is 1:3.

[0040] In summary, the specific manufacturing process of the back waist structure 20 is as follows:

[0041] The first waist layer 201 is the outer waist, and the second waist layer 203 is the inner waist. The width of the second waist layer 203 is smaller than the width of the first waist layer 201. A first elastomer 202 is composited on the inner side of the first waist layer 201. The first elastomer 202 is selected as PE film, and the ratio of the area of ​​the first elastomer 202 to the area of ​​the rear waist structure 20 is 1:3.

[0042] Next, a second elastic body 206 is bonded at a certain interval of the first elastic body 202. The second elastic body 206 is close to one end of the first waist layer 201. Then, a second waist layer 203 is bonded. The second waist layer 203 and the second elastic body 206 are bonded together in a staggered manner, and the second waist layer 203 covers the first elastic body 202.

[0043] Then, the first waist layer 201 is folded over at one end near the second elastic body 206 to cover the second elastic body 206 and cover it to the second waist layer 203 to form the third waist layer 204.

[0044] Finally, a second fold is performed, during which intermittent adhesive spraying is applied. After folding, a fourth waist layer 205, a second elastomer 206, and a fifth waist layer 207 are formed. Multiple adhesive application zones are spaced apart along the width of the rear waist structure 20 between the third waist layer 204 and the fourth waist layer 205. Adhesive for bonding the third waist layer 204 and the fourth waist layer 205 is sprayed onto these application zones, resulting in an intermittent adhesive structure between them. Adhesive-free zones are formed between adjacent application zones, with the width of these zones less than or equal to the width of the absorbent core 301. This ultimately forms a first waist layer 201 and a first elastomer 202 stacked sequentially from the inside out. The rear waist structure 20 of the second waist layer 203, the third waist layer 204, the fourth waist layer 205, the second elastic body 206, and the fifth waist layer 207 allows the first elastic body 202 and the second elastic body 206 to be staggered and spaced apart. Both the first elastic body 202 and the second elastic body 206 protrude away from the first waist layer 201, forming a groove structure between the first elastic body 202 and the second elastic body 206. When the user is active or lying down, the groove structure can better adapt to the user's waist and hip curves, reducing the problem of back leakage caused by urine accumulation on the back of the waist, effectively preventing urine from leaking backward under the action of gravity, thereby significantly improving the back leakage prevention effect.

[0045] In the description of this disclosure, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings and is only for the convenience of describing this disclosure and simplifying the description. Unless otherwise stated, these directional terms 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, and therefore should not be construed as a limitation on the scope of protection of this disclosure.

[0046] For those skilled in the art, various other corresponding changes and modifications can be made based on the technical solutions and concepts described above, and all such changes and modifications should fall within the protection scope of the claims disclosed herein.

Claims

1. A type of back-leaking pull-up diaper, characterized in that, It includes a front waist structure (10), a back waist structure (20) and a crotch (30), with the two ends of the crotch (30) connected to the front waist structure (10) and the back waist structure (20) respectively; The rear waist structure (20) includes a first waist layer (201), a first elastic body (202), a second waist layer (203), a third waist layer (204), a fourth waist layer (205), a second elastic body (206), and a fifth waist layer (207) stacked sequentially from the outside to the inside. The first elastic body (202) and the second elastic body (206) are staggered and spaced apart, and both the first elastic body (202) and the second elastic body (206) protrude away from the first waist layer (201), so that a groove structure is formed between the first elastic body (202) and the second elastic body (206).

2. The anti-leakage pull-up pants according to claim 1, characterized in that, The first elastomer (202) is a PE film.

3. The anti-leakage pull-up pants according to claim 1, characterized in that, The second elastomer (206) is spandex filament.

4. The anti-leakage pull-up pants according to claim 1, characterized in that, The first waist layer (201), the second waist layer (203), the third waist layer (204), the fourth waist layer (205) and the fifth waist layer (207) are all non-woven fabrics.

5. The anti-leakage pull-up pants according to claim 1, characterized in that, The width of the second waist layer (203) is smaller than the width of the first waist layer (201), and the widths of the first waist layer (201), the third waist layer (204), the fourth waist layer (205), and the fifth waist layer (207) are equal.

6. The anti-leakage pull-up pants according to claim 1, characterized in that, The crotch (30) is provided with a water-absorbing core (301) in the middle part.

7. The anti-leakage pull-up pants according to claim 6, characterized in that, Multiple adhesive application zones are arranged at intervals along the width direction of the rear waist structure (20) between the third waist layer (204) and the fourth waist layer (205). Adhesive for bonding the third waist layer (204) and the fourth waist layer (205) is sprayed in the adhesive application zones, so that the third waist layer (204) and the fourth waist layer (205) have an intermittent adhesive structure.

8. The anti-leakage pull-up pants according to claim 7, characterized in that, Adhesive-free zones are formed between adjacent glued zones, and the width of the adhesive-free zones is less than or equal to the width of the absorbent core (301).

9. The anti-leakage pull-up pants according to claim 1, characterized in that, The ratio of the area of ​​the first elastic body (202) to the area of ​​the rear waist structure (20) is 1:3.

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