Pull-ups with backflow-proof and leakage-proof pocket structure

Abstract

The invention discloses pull-ups with an anti-backflow leakage-proof pocket structure, and belongs to the technical field of absorption products, the pull-ups comprise a pull-ups body and leakage-proof pockets, and the pull-ups body is composed of a surface layer, an absorption core body, a leakage-proof bottom film, a bottom layer non-woven fabric, a leakage-proof partition edge and a waistline part; a pocket-shaped partition edge is arranged on the waistline portion at one end or two ends of the pull-up pants body, a leakage-proof pocket is formed between the pocket-shaped partition edge and the surface layer, an inner absorption core is arranged at the position, opposite to the leakage-proof pocket, between the surface layer and the leakage-proof bottom film, and an inner cavity is formed between the bottom of the inner absorption core and the leakage-proof bottom film. The inner absorption core is composed of an upper coating layer, an inner absorption layer and a lower coating layer, a plurality of liquid inlets are formed in the surface of the upper coating layer, and liquid inlet channels matched with the liquid inlets are formed in the inner absorption layer; according to the pull-up pants, the retention time of excrement in the leakage-proof pocket can be shortened, and therefore the situation that the excrement flows back outwards from the leakage-proof pocket is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of absorbent articles, in particular to a pull-up diaper with a back leakage-proof leakage-proof pocket structure. BACKGROUND

[0002] In the process of raising babies, paper diapers, pull-up diapers and other absorbent articles are essential, so parents will pay attention to whether the absorbability and other capabilities of the absorbent articles can cover different scenarios in the daily life of the baby, especially when the baby is sleeping, absorbent articles with excellent absorbability and good comfort can improve the sleep quality of the baby, but when the baby is sleeping in a prone or lying position and excretes, the excrement will quickly flow to the front or back waist, which is easy to cause the excrement to leak out from the waist of the absorbent article.

[0003] Based on the above situation, the Chinese patent document with publication (announcement) number CN222777424U discloses an absorbent article with a back pocket leakage-proof function, which comprises a main body and a waist structure arranged at the length direction end of the main body, the waist structure comprises a waist inner layer and a waist outer layer, the waist inner layer and the waist outer layer are integrally folded and formed from non-woven fabric, thereby forming a hollow interlayer, the length direction end of the hollow interlayer is provided with an adhesive area; the middle part of the main body is provided with an absorbent structure extending along the length direction of the main body, the two sides corresponding to the absorbent structure are provided with leakage-proof side edges, the length direction end of the leakage-proof side edge is clamped between the waist inner layer and the waist outer layer, and extends into the adhesive area in the hollow interlayer; the position close to the end of the absorbent structure of the hollow interlayer is clamped with a pocket cloth, and the length direction end of the pocket cloth is adhesively fixed with the leakage-proof side edge, thereby forming a first leakage-proof cavity between the pocket cloth and the absorbent structure.

[0004] The above patent document discloses an absorbent article that prevents excrement from leaking out by setting a leakage-proof cavity, which can be used during the sleep of the baby, and can prevent excrement from leaking out from the waist, but since the leakage-proof cavity is located close to the waist, which is also at the edge of the absorbent core inside the absorbent article, the efficiency of the absorbent core in absorbing the excrement inside the leakage-proof cavity is low, which is easy to cause the excrement to stay in the leakage-proof cavity for a long time, and if the baby using the absorbent article changes the sleeping posture at this time, the excrement inside the leakage-proof cavity is easy to flow back, and the excrement is easy to adhere to the skin surface of the baby during the backflow process, which causes the skin of the baby to be in a wet state for a long time, increases the risk of health problems of the baby's skin and affects the comfort during the use of the absorbent article, based on the above defects of the absorbent article, it can be seen that the absorbent article still has room for improvement. SUMMARY

[0005] In view of the technical defects in the background art, the present application provides a pull-up diaper with an anti-reflux and anti-leak pocket structure, which solves the above technical problems and meets the actual needs, and the specific technical scheme is as follows: A pull-up diaper with an anti-reflux and anti-leak pocket structure, comprising a pull-up diaper body, an anti-leak pocket, the pull-up diaper body is composed of a surface layer, an absorbent core, an anti-leak bottom film and a bottom layer of non-woven fabric in sequence along the thickness direction, the surface layer is provided with anti-leak side edges on both sides of the pull-up diaper body in the width direction, and the bottom layer of non-woven fabric is extended outward at both ends of the pull-up diaper body in the length direction and forms a waist circumference part; The waist circumference part of one end or both ends of the pull-up diaper body is provided with a pocket-shaped side edge facing the surface center of the surface layer, an anti-leak pocket is formed between the pocket-shaped side edge and the surface layer, an inner absorbent core is arranged at the position opposite to the anti-leak pocket between the surface layer and the anti-leak bottom film, the position of the bottom edge of the inner absorbent core is bonded and fixed with the anti-leak bottom film, and an inner cavity is formed between the bottom of the inner absorbent core and the anti-leak bottom film; The inner absorbent core is composed of an upper cladding layer, an inner absorbent layer and a lower cladding layer in sequence along the thickness direction of the pull-up diaper body, the upper cladding layer is located on the side close to the surface layer and is provided with a plurality of liquid inlet ports on the surface, the inner absorbent layer forms a liquid inlet channel extending from the liquid inlet port to the surface of the lower cladding layer, and the upper cladding layer is provided with a liquid blocking part extending from the edge of the liquid inlet port to the surface of the lower cladding layer along the liquid inlet channel; The upper cladding layer has hydrophobicity, the lower cladding layer has hydrophilicity, the inner absorbent layer is formed by filling water-absorbing material between the upper cladding layer and the lower cladding layer, and a plurality of areas without water-absorbing material in the inner absorbent layer form liquid inlet channels.

[0006] As a further technical scheme of the present application, a plurality of hydrophobic fibers are filled between the liquid blocking part and the water-absorbing material of the inner absorbent layer, the hydrophobic fibers uniformly wrap the inner wall of the liquid inlet channel and form a hydrophobic layer, and the hydrophobic fibers have hydrophobicity.

[0007] As a further technical scheme of the present application, the diameter of the liquid inlet channel is 0.5mm-2mm, and the thickness of the hydrophobic layer is 0.2mm-1mm.

[0008] As a further technical scheme of the present application, the position of the surface of the upper cladding layer opposite to the liquid inlet channel is formed by cutting at least two interlaced cutting ports, at least four liquid blocking parts are formed at the same time as the cutting ports are formed, the liquid blocking parts are embedded in the inner part of the liquid inlet channel, and the top parts of a plurality of liquid blocking parts jointly form liquid inlet ports.

[0009] As a further technical scheme of the present application, the bottom layer non-woven fabric is folded upwards at both ends along the length direction of the pull-up diaper body to form folding parts, the folding parts and the bottom layer non-woven fabric together form waistline parts, and a plurality of waistline spandex filaments extending along the width direction of the pull-up diaper body are arranged inside the waistline parts. The two waistline parts at both ends along the length direction of the pull-up diaper body are connected in sequence and form a waistline structure in the shape of a ring.

[0010] As a further technical scheme of the present application, the pocket-shaped barrier edge is composed of two pieces of barrier non-woven fabric, one end of each of the two pieces of barrier non-woven fabric is fixed between the folding part and the surface layer, and the other end of each of the two pieces of barrier non-woven fabric extends towards the center of the surface layer, and a plurality of barrier spandex filaments extending along the width direction of the pull-up diaper body are arranged between the two pieces of barrier non-woven fabric.

[0011] As a further technical scheme of the present application, the waistline non-woven fabric is arranged between the folding part and the bottom layer non-woven fabric, the waistline spandex filaments are arranged between the waistline non-woven fabric and the bottom layer non-woven fabric, and the upper and lower surfaces of the waistline spandex filaments are fixedly connected with the waistline non-woven fabric and the bottom layer non-woven fabric respectively through intermittent adhesive coating.

[0012] As a further technical scheme of the present application, the absorbent core body is composed of, in sequence along the thickness direction of the pull-up diaper body, an upper layer non-woven fabric, an upper absorbent material layer, a fluffy cotton layer, a lower absorbent material layer, and a lower layer non-woven fabric.

[0013] As a further technical scheme of the present application, the leakage-proof barrier edge is composed of two pieces of leakage-proof non-woven fabric, both ends of each of the two pieces of leakage-proof non-woven fabric are fixedly connected with the two waistline parts, and a plurality of leakage-proof spandex filaments extending along the length direction of the pull-up diaper body are arranged between the two pieces of leakage-proof non-woven fabric.

[0014] As a further technical scheme of the present application, one piece of the leakage-proof non-woven fabric of the leakage-proof barrier edge extends to the edge in the width direction of the bottom layer non-woven fabric, and a plurality of leg girth spandex filaments extending along the length direction of the pull-up diaper body are arranged between the piece of leakage-proof non-woven fabric and the bottom layer non-woven fabric.

[0015] The present application has the beneficial effects that: The application discloses a pull-up diaper capable of preventing excrement from flowing back in a leak-proof pocket structure, which blocks excrement from passing through the leak-proof pocket to contain the excrement through a pocket-shaped separation edge, avoids excrement from leaking outward from a waistline, and absorbs the excrement in the leak-proof pocket through an inner absorption core matched with the leak-proof pocket; before the inner absorption core absorbs the excrement, the excrement is first transferred to the inside of an inner cavity through a liquid inlet channel, and then is absorbed by an inner absorption layer; after the inner absorption layer absorbs the excrement and expands, the liquid inlet channel is closed, so that the excrement in the inner cavity does not flow back into the leak-proof pocket; and the pull-up diaper can shorten the time for which the excrement stays in the leak-proof pocket, thereby reducing the occurrence of the excrement flowing back outward from the leak-proof pocket. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a sectional view of a pull-up diaper with a leak-proof pocket structure capable of preventing backflow Figure 1 .

[0017] Figure 2 is a sectional view of a pull-up diaper with a leak-proof pocket structure capable of preventing backflow Figure 2 .

[0018] Figure 3 is a sectional view of an absorption core of a pull-up diaper with a leak-proof pocket structure capable of preventing backflow.

[0019] Figure 4 is Figure 1 a partial schematic view of A in FIG.

[0020] Figure 5 is a schematic view of an inner absorption core of a pull-up diaper with a leak-proof pocket structure capable of preventing backflow before and after expansion.

[0021] Figure 6 is a schematic view of a pull-up diaper with a leak-proof pocket structure capable of preventing backflow, in which a liquid inlet is formed on the surface of an upper cladding layer.

[0022] 1-pull-up diaper body, 11-surface layer, 12-absorption core, 121-upper layer of non-woven fabric, 122-upper absorption material layer, 123-puffed cotton layer, 124-lower absorption material layer, 125-lower layer of non-woven fabric, 13-leak-proof bottom film, 14-bottom layer of non-woven fabric, 15-leak-proof separation edge, 151-leak-proof non-woven fabric, 152-leak-proof spandex filament, 16-waistline part, 161-folding part, 162-waistline spandex filament, 163-waistline non-woven fabric, 17-legline spandex filament, 2-leak-proof pocket, 3-pocket-shaped separation edge, 31-separation edge non-woven fabric, 32-separation edge spandex filament, 4-inner absorption core, 41-upper cladding layer, 42-inner absorption layer, 43-lower cladding layer, 44-liquid inlet, 45-liquid inlet channel, 46-liquid blocking part, 47-hydrophobic layer, 48-cutting opening, 5-inner cavity. DETAILED DESCRIPTION

[0023] The embodiments of the present application are described below in connection with the associated drawings and examples, and the embodiments of the present application are not limited to the following examples, and the present application relates to the necessary components in the related art, which should be regarded as the known technology in the art, and is known and mastered by the person skilled in the art.

[0024] The pull-up diaper with the anti-reflux and leakage-proof pocket structure comprises a pull-up diaper body 1, a leakage-proof pocket 2, the pull-up diaper body 1 is sequentially composed of a surface layer 11, an absorbent core 12, a leakage-proof bottom film 13 and a bottom layer non-woven fabric 14 in the thickness direction, the surface layer 11 is provided with leakage-proof side edges 15 on both sides of the pull-up diaper body 1 in the width direction, and the bottom layer non-woven fabric 14 is extended outward at both ends of the pull-up diaper body 1 in the length direction and forms a waist circumference part 16. The present application discloses a pull-up diaper for preventing the reflux of excrement in a leakage-proof pocket structure, referring to Figure 1 、 Figure 2 The pull-up diaper mainly comprises a pull-up diaper body 1 and a leakage-proof pocket 2, the pull-up diaper body 1 is sequentially stacked by a surface layer 11, an absorbent core 12, a leakage-proof bottom film 13 and a bottom layer non-woven fabric 14 in the thickness direction and is fixed by a common pull-up diaper manufacturing process, wherein the surface layer 11 is preferably hot air non-woven fabric, the surface layer 11 directly contacts the human body during the use of the pull-up diaper, the use of the hot air non-woven fabric can improve the comfort when contacting the human body, and the fluffy structure can improve the efficiency of the downward penetration of excrement; the leakage-proof bottom film 13 is preferably a waterproof and breathable PE film, which can avoid the penetration of urine in the pull-up diaper to the outer surface of the pull-up diaper, maintain the dryness of the outer surface of the pull-up diaper and ensure the breathability of the pull-up diaper; the bottom layer non-woven fabric 14 is preferably SMS non-woven fabric, which can ensure the surface strength of the pull-up diaper while improving the softness and touch comfort of the surface of the pull-up diaper; Further, referring to Figure 3The absorbent core 12 is composed of, in sequence along the thickness direction of the pull-up diaper body 1, an upper layer of non-woven fabric 121, an upper absorbent material layer 122, a fluffy cotton layer 123, a lower absorbent material layer 124, and a lower layer of non-woven fabric 125. The upper layer of non-woven fabric 121 and the lower layer of non-woven fabric 125 are preferably dust-free paper, which can promote liquid diffusion. When urine penetrates through the surface layer 11 to the upper layer of non-woven fabric 121, the upper layer of non-woven fabric 121 further promotes the diffusion of urine, thereby increasing the effective contact area of urine with the absorbent core 12. The upper absorbent material layer 122 and the lower absorbent material layer 124 are preferably water-absorbing resin, which can absorb a large amount of liquid and lock it inside, thereby ensuring the absorption performance of the pull-up diaper. The fluffy cotton layer 123 is preferably a reticular structure layer made of fluffy cotton, which can constrain and fix the upper absorbent material layer 122 and the lower absorbent material layer 124, thereby preventing the occurrence of phenomena such as delamination and lumping inside the absorbent core 12 after it absorbs urine. The fluffy cotton layer 123 can also improve the efficiency of the diffusion of urine inside the absorbent core 12. Further, the bottom layer of non-woven fabric 14 is folded upward at both ends along the length direction of the pull-up diaper body 1 to form folding portions 161. The folding portions 161 and the bottom layer of non-woven fabric 14 together form waist portions 16, and the waist portions 16 are provided with a plurality of waist elastics 162 extending along the width direction of the pull-up diaper body 1. The two waist portions 16 at both ends along the length direction of the pull-up diaper body 1 are connected end to end along the width direction to form a waist structure in the shape of a ring. After the end portions of the bottom layer of non-woven fabric 14 along the length direction are folded upward to form the folding portions 161, a space for wrapping the waist elastics 162 is formed between the bottom layer of non-woven fabric 14 and the folding portions 161. The waist elastics 162 are preferably fine denier elastic elastics. After the waist elastics 162 are fixed inside the waist portions 16 by glue, the two waist portions 16 at both ends of the pull-up diaper body 1 are connected end to end by hot pressing or the like to form a waist structure in the shape of a ring. When a baby wears the pull-up diaper, the waist structure surrounds the waist of the baby in the shape of a ring, and the waist elastics 162 provide elastic restraint for the waist structure, thereby preventing the pull-up diaper from sliding down from the baby. Further, the folding portions 161 and the bottom layer of non-woven fabric 14 are provided with waist non-woven fabrics 163, and the waist elastics 162 are arranged between the waist non-woven fabrics 163 and the bottom layer of non-woven fabric 14. The waist elastics 162 are fixedly connected to the waist non-woven fabrics 163 and the bottom layer of non-woven fabric 14 by intermittent adhesive coating on the upper and lower surfaces of the waist elastics 162. The waist nonwoven fabric 163 is preferably an SMS nonwoven fabric, and the waist elastics 162 are fixed to the waist nonwoven fabric 163 and the bottom nonwoven fabric 14 by intermittent adhesive coating in the stretched state, that is, the surface of each waist elastic 162 is fixed to the waist nonwoven fabric 163 and the bottom nonwoven fabric 14 at intervals. When the waist elastics 162 shrink, the originally flat surfaces of the waist nonwoven fabric 163 and the bottom nonwoven fabric 14 form wavy wrinkles. These wrinkles play a buffering role between the waist elastics 162 and the human skin, reduce the tightness of the waist structure, and thus improve the comfort of the waist structure.

[0025] As a further structure of the pull-up diaper of the present application, with reference to Figure 1 , Figure 4 , the waist portion 16 of one end or both ends of the pull-up diaper body 1 is provided with a pocket-shaped barrier 3 facing the surface center of the surface layer 11, and a leakage-proof pocket 2 is formed between the pocket-shaped barrier 3 and the surface layer 11. An inner absorbent core 4 is provided between the surface layer 11 and the leakage-proof bottom film 13 at a position opposite to the leakage-proof pocket 2. The position of the bottom edge of the inner absorbent core 4 is adhesively fixed to the leakage-proof bottom film 13, and an inner cavity 5 is formed between the bottom of the inner absorbent core 4 and the leakage-proof bottom film 13. The pocket-shaped barrier 3 is mainly composed of a waterproof nonwoven fabric. The leakage-proof pocket 2 between the pocket-shaped barrier 3 and the surface layer 11 is mainly used to contain the excreta flowing on the surface of the surface layer 11 towards the waist portion 16. The excreta is blocked from flowing further towards the waist portion 16 by the water-impermeable characteristic of the pocket-shaped barrier 3, thereby avoiding the excreta from leaking outwards from the waist structure of the pull-up diaper body 1. These excreta penetrate into the inner cavity 5 after penetrating through the inner absorbent core 4 through the surface layer 11 inside the leakage-proof pocket 2, thereby avoiding the excreta from staying in the leakage-proof pocket 2 for a long time, and thus avoiding the excreta from flowing back and staining the baby's skin surface; As a further structure of the pull-up diaper of the present application, with reference to Figure 5 , the inner absorbent core 4 is sequentially composed of an upper cladding layer 41, an inner absorbent layer 42, and a lower cladding layer 43 along the thickness direction of the pull-up diaper body 1. The upper cladding layer 41 is located close to the surface layer 11 and is provided with a plurality of liquid inlet ports 44 on the surface. The inner absorbent layer 42 is internally formed with a liquid inlet channel 45 extending from the liquid inlet port 44 to the surface of the lower cladding layer 43. The upper cladding layer 41 is provided with a liquid blocking portion 46 extending from the edge of the liquid inlet port 44 along the liquid inlet channel 45 to the surface of the lower cladding layer 43. The upper cladding layer 41 has a hydrophobic property, and the lower cladding layer 43 has a hydrophilic property. The inner absorbent layer 42 is formed by filling the space between the upper cladding layer 41 and the lower cladding layer 43 with a water-absorbing material. A plurality of areas in the inner absorbent layer 42 without the water-absorbing material are formed as the liquid inlet channel 45. The inner absorption core 4 is the main structure for absorbing the excrement in the leakage-proof pocket 2. The upper cover layer 41 is preferably a waterproof non-woven fabric. The water-absorbing material filled in the inner absorption layer 42 is preferably water-absorbing resin. The lower cover layer 43 is preferably dust-free paper. When the excrement enters the inside of the leakage-proof pocket 2, it penetrates downward through the surface layer and contacts the upper cover layer 41. The excrement penetrates the upper cover layer 41 directly into the inner absorption core 4, but penetrates downward to the surface of the lower cover layer 43 through the liquid inlet channel 45 and then penetrates the lower cover layer 43 into the inner cavity 5. That is, the inner cavity 5 replaces the leakage-proof pocket 2 and stores the excrement, which can shorten the time of the excrement staying in the leakage-proof pocket 2, thereby reducing the occurrence of the excrement refluxing out of the leakage-proof pocket 2; It should be noted that after the excrement enters the inner cavity 5, it diffuses through the lower cover layer 43 and is gradually absorbed by the inner absorption layer 42. The water-absorbing resin in the inner absorption layer 42 gradually expands after absorbing water and gradually extrudes the liquid inlet channel 45, so that the diameter of the liquid inlet channel 45 gradually decreases until it disappears. At the same time, the liquid blocking part 46 is gradually covered at the liquid inlet 44 from the inside by the water-absorbing resin. With the disappearance of the liquid inlet channel 45 and the covering of the liquid inlet 44 by the liquid blocking part 46, the excrement in the inner cavity 5 cannot reflux into the leakage-proof pocket 2. The storage of the excrement in the inner cavity 5 and the absorption of the excrement by the inner absorption core 4 reduce the amount of excrement in the leakage-proof pocket 2 or make all the excrement in the leakage-proof pocket 2 be quickly absorbed, which is conducive to reducing the occurrence of the excrement refluxing out of the leakage-proof pocket 2; It should be further noted that in the prior art, when the excrement enters the inside of the leakage-proof pocket, the core in the absorbent article can absorb the excrement, but the excrement in the leakage-proof pocket diffuses toward the center of the absorbent article through the surface layer non-woven fabric, rather than diffusing from the center of the absorbent article toward the two ends close to the waistline. Therefore, the diffusion efficiency of the excrement is low. Therefore, the water-absorbing material close to the leakage-proof pocket of the core is saturated with liquid in a short time. In addition, the leakage-proof pocket is not located above the core but inside the waistline. The core absorbs the excrement in the leakage-proof pocket slowly, which leads to the excrement in the leakage-proof pocket that is not absorbed by the core temporarily and stays in the leakage-proof pocket. These excrement can easily contaminate the skin surface of the baby during the reflux process; And the technical scheme of the present application improves the above-mentioned defects, in the technical scheme of the present application, after the excrement enters the inside of the leakage-proof pocket 2, it will enter the inside of the inner cavity 5 through the liquid inlet channel 45, this process is to transfer the excrement in the leakage-proof pocket 2 to the inside of the inner cavity 5, when the excrement enters the leakage-proof pocket 2, the baby is in a lying or crouching posture, the inner cavity 5 is located below the leakage-proof pocket 2, the excrement is more likely to enter the inside of the inner cavity 5 through the liquid inlet channel 45 under the action of gravity, the excrement in the inner cavity 5 is gradually absorbed by the inner absorption layer 42 through the diffusion effect of the lower cladding layer 43, when the inner cavity 5 is filled with excrement, the top of the excrement in the inner cavity 5 will contact the bottom of the inner absorption layer 42, at this time, the inner absorption layer 42 will absorb the excrement faster, and the water-absorbing resin in the inner absorption layer 42 can expand rapidly to the saturation or near saturation of the excrement, and then the liquid inlet channel 45 disappears through extrusion, and the liquid blocking part 46 blocks the liquid inlet 44, so that the excrement in the inner cavity 5 cannot flow back to the leakage-proof pocket 2; In the technical scheme of the present application, the inner absorption core 4 is similar to the part of the core body close to the waist circumference in the common absorbent product, and the main difference is that when the inner absorption core 4 absorbs the excrement to saturation, a certain amount of excrement is still stored in the inner cavity 5 between the bottom of the inner absorption core 4 and the leakage-proof bottom film 13, if the leakage-proof pocket 2 of the pull-up diaper of the present application contains the same volume of excrement as the leakage-proof pocket of the common absorbent product, in addition to reducing the amount of excrement in the leakage-proof pocket 2 by the absorption capacity of the inner absorption core 4, the present application also stores excrement in the inner cavity 5, so that the excrement in the leakage-proof pocket 2 is absorbed or transferred in a shorter time, and the time of excrement staying in the leakage-proof pocket 2 is shortened; The technical scheme of the present application aims to improve the problem of excrement backflow in the leakage-proof pocket 2, but the pull-up diaper in the technical scheme needs to handle a relatively common volume of excrement in a normal use scenario, and has similar absorption performance to common absorbent products, if the volume of excrement is significantly larger than the absorption capacity of the absorbent product, it is also normal that the absorbent product cannot normally absorb such excrement, that is, when there is a large amount of excrement entering the leakage-proof pocket 2 and the volume of excrement exceeds the absorption capacity of the inner absorption core 4 and the capacity of the inner cavity 5, there will still be excrement staying in the leakage-proof pocket 2, but compared with the common absorbent product, the pull-up diaper of the present application can reduce the amount of excrement staying in the leakage-proof pocket 2 and shorten the time of staying, thereby reducing the occurrence of excrement backflow from the leakage-proof pocket 2, which is the main improvement of the technical scheme of the present application over the existing absorbent products.

[0026] As one of the preferred embodiments of the present application, refer to Figure 5, the liquid blocking part 46 and the water absorbing material of the inner absorbing layer 42 are filled with a plurality of hydrophobic fibers, the hydrophobic fibers are uniformly wrapped in the inner wall of the liquid inlet channel 45 and form a hydrophobic layer 47, and the hydrophobic fibers have hydrophobicity; the hydrophobic fibers are preferably polypropylene short fibers with a length of less than 1mm and impregnated with common hydrophobic agents on the surface, and after the hydrophobic layer 47 is formed on the inner wall of the liquid inlet channel 45 by the hydrophobic fibers, the hydrophobic layer 47 can be used as a structure for blocking the water absorbing material in the inner absorbing layer 42 from the excrement in the process of the excrement in the leakage-proof pocket 2 passing through the liquid inlet channel 45 into the inner cavity 5, so as to avoid the excrement from being absorbed in the liquid inlet channel 45 and make the water absorbing material swell too early, and when the water absorbing material swells and presses the liquid inlet channel 45, the hydrophobic fibers will cover the original liquid inlet 44 with the liquid blocking part 46, thereby improving the waterproof performance of the original liquid inlet 44 after being closed, and improving the anti-back seepage effect of the inner absorbing core 4; Further, the diameter of the liquid inlet channel 45 is 0.5mm-2mm, and the thickness of the hydrophobic layer 47 is 0.2mm-1mm; the diameter of the liquid inlet channel 45 is usually matched with the diameter of the liquid inlet 44, and by adjusting the diameter of the liquid inlet channel 45, the speed of the excrement passing through the liquid inlet channel 45 and the time required for the liquid inlet channel 45 to be closed can be adjusted; the larger the diameter of the liquid inlet channel 45, the faster the excrement passes through the liquid inlet channel 45, and at the same time, a higher swelling rate of the inner absorbing layer 42 is required to close the liquid inlet channel 45, at this time, the inner absorbing core 4 can absorb more excrement and transfer more excrement to the inner cavity 5; in addition, the larger the diameter of the liquid inlet channel 45, the thicker the hydrophobic layer 47 needs to be, which is to have enough hydrophobic fibers covering the original liquid inlet 44 when the liquid inlet channel 45 is closed; Further, referring to Figure 6 The surface of the upper covering layer 41 relative to the position of the liquid inlet channel 45 is formed with at least two interlaced cutting openings 48 by cutting, and at least four liquid blocking parts 46 are formed at the same time, the liquid blocking parts 46 are embedded in the liquid inlet channel 45, and the top of the plurality of liquid blocking parts 46 together forms the liquid inlet 44; the upper covering layer 41 is preferably cut in a cross shape to form the cutting openings 48 and the four liquid blocking parts 46, and the four liquid blocking parts 46 are embedded in the liquid inlet channel 45 to allow the liquid inlet channel 45 to allow the excrement to pass through, and since the liquid blocking part 46 is formed by cutting the upper covering layer 41, the surface of the liquid blocking part 46 also has hydrophobicity, so the liquid blocking part 46 can also prevent the excrement from penetrating into the inner absorbing layer 42 when the excrement passes through the liquid inlet channel 45, in addition, when the inner absorbing layer 42 swells and presses to push the liquid blocking part 46 to cover the inside of the liquid inlet 44, the four liquid blocking parts 46 can completely cover the liquid inlet 44; It should be noted that in the process of making the inner absorption core 4, first, the non-woven fabric as the upper cover layer 41 is transported and cut by cross cutting to form the cut opening 48, then the upper cover layer 41 is transported to the conveyor belt with a plurality of protruding structures on the surface, the shape of the protruding structure on the surface of the conveyor belt matches the liquid inlet channel 45, the number and position of the protruding structure on the surface of the conveyor belt match the cut opening 48 on the surface of the upper cover layer 41, the protruding structure is inserted from the bottom of the upper cover layer 41 along the cut opening 48 and protrudes from the surface of the upper cover layer 41, the four liquid blocking parts 46 are wrapped on the surface of the protruding structure, at this time the hydrophobic fibers are applied around the protruding structure to form a hydrophobic layer, then the water-absorbing resin is applied on the surface of the upper cover layer 41 to form the inner absorption layer 42, the water-absorbing resin does not cover the position of the protruding structure, so that a plurality of liquid inlet channels 45 without filling the water-absorbing resin are formed inside the inner absorption layer 42, finally the non-woven fabric as the lower cover layer 43 is covered on the surface of the inner absorption layer 42 and is bonded and fixed, and finally the protruding structure is separated from the liquid inlet channel to obtain the inner absorption core 4; in addition, the side of the lower cover layer 43 close to the inner absorption layer 42 is preferably coated with water-soluble adhesive before being covered on the surface of the inner absorption layer 42, so that the lower cover layer 43 can be bonded and fixed with the inner absorption layer 42, the hydrophobic layer 47 and the liquid blocking part 46, and when the inner absorption core 4 absorbs the excrement, the water-soluble adhesive can be dissolved in the excrement, so that the liquid blocking part 46 and the hydrophobic layer 47 can move and cover inside the liquid inlet 44.

[0027] As one of the preferred embodiments of the present application, referring to Figure 1 、 Figure 4 , the bag-shaped barrier 3 is composed of two pieces of barrier non-woven fabric 31, one end of each of the two pieces of barrier non-woven fabric 31 is fixed between the folding part 161 and the surface layer 11, and the other end of each of the two pieces of barrier non-woven fabric 31 extends towards the center of the surface of the surface layer 11, and a plurality of barrier spandex filaments 32 extending along the width direction of the diaper body 1 are arranged between the two pieces of barrier non-woven fabric 31; the barrier non-woven fabric 31 is preferably waterproof non-woven fabric, and the barrier spandex filament 32 is preferably fine denier elastic spandex filament, in the bag-shaped barrier 3, the barrier spandex filament 32 is wrapped inside by the same piece of barrier non-woven fabric 31 after being folded, one end of the bag-shaped barrier 3 along the length direction of the diaper body 1 is fixed between the surface layer 11 and the folding part 161 by adhesive, and both ends of the bag-shaped barrier 3 along the width direction of the diaper body 1 are fixed at both ends of the waist circumference part 16 by adhesive, the barrier spandex filament 32 makes the surface of the bag-shaped barrier 3 better adhere to the surface of the baby's skin through elasticity, avoiding excrement from leaking outward between the bag-shaped barrier 3 and the baby's skin, thereby improving the anti-leakage effect of the bag-shaped barrier 3.

[0028] As one of the preferred embodiments of the present application, referring to Figure 1 、 Figure 2The leakage-preventing baffle 15 is composed of two pieces of leakage-preventing non-woven fabric 151, the two ends of the two pieces of leakage-preventing non-woven fabric 151 are fixedly connected with the two waist circumference portions 16 respectively, and a plurality of leakage-preventing spandex filaments 152 extending along the length direction of the pull-up pants body 1 are arranged between the two pieces of leakage-preventing non-woven fabric 151; the leakage-preventing non-woven fabric 151 is preferably waterproof non-woven fabric, and the leakage-preventing spandex filament 152 is preferably fine denier elastic spandex filament; in the leakage-preventing baffle 15, the leakage-preventing spandex filament 152 is wrapped in the same piece of leakage-preventing non-woven fabric 151 after being folded, and the two ends of the leakage-preventing baffle 15 along the length direction of the pull-up pants body 1 are fixedly connected between the surface layer 11 and the folded portion 161 by means of the adhesive, the bottom of the leakage-preventing baffle 15 is fixedly connected with the edge of the absorbent core body 12 by means of the adhesive, and the leakage-preventing spandex filament 152 can make the surface of the leakage-preventing baffle 15 better adhere to the skin surface of the baby through elasticity, so as to avoid the excrement from leaking outward between the leakage-preventing baffle 15 and the skin of the baby, thereby improving the side leakage prevention effect of the leakage-preventing baffle 15.

[0029] As one of the preferred embodiments of the present application, referring to Figure 2 One piece of leakage-preventing non-woven fabric 151 of the leakage-preventing baffle 15 extends to the edge of the width direction of the bottom layer non-woven fabric 14, and a plurality of leg circumference spandex filaments 17 extending along the length direction of the pull-up pants body 1 are arranged between the piece of leakage-preventing non-woven fabric 151 and the bottom layer non-woven fabric 14; the leg circumference spandex filament 17 is preferably fine denier spandex filament; by arranging the leg circumference spandex filament 17 between the piece of leakage-preventing non-woven fabric of the leakage-preventing baffle 15 and the bottom layer non-woven fabric 14, the pull-up pants body 1 forms an elastic leg circumference structure, which can make the position of the pull-up pants body 1 close to the root of the thigh of the baby better adhere to the skin surface, can avoid the excrement on the surface of the surface layer 11 from leaking outward from the leg circumference position, and is beneficial to improving the side leakage prevention effect of the pull-up pants body 1.

[0030] In summary, the present application discloses a pull-up pants capable of preventing the backflow of excrement in the leakage-preventing pocket structure, which blocks the excrement from passing through the leakage-preventing pocket 2 to contain the excrement by means of the pocket-shaped baffle 3, avoids the excrement from leaking outward from the waist circumference, and further absorbs the excrement in the leakage-preventing pocket 2 by means of the inner absorbent core 4 matched with the leakage-preventing pocket 2; before the inner absorbent core 4 absorbs the excrement, the excrement is first transferred to the inner cavity 5 by means of the liquid inlet channel 45, and then is absorbed by means of the inner absorbent layer 42; after the inner absorbent layer 42 absorbs the excrement and expands, the liquid inlet channel 45 is closed, so as to avoid the excrement in the inner cavity 5 from backflowing into the leakage-preventing pocket 2; the pull-up pants of the present application can shorten the time for the excrement to stay in the leakage-preventing pocket 2, thereby reducing the occurrence of the backflow of the excrement from the leakage-preventing pocket 2.

[0031] The above merely describes the preferred embodiments of the present application, and it should be pointed out that, for those skilled in the art, several improvements and refinements can be made without departing from the principles of the present application, and these improvements and refinements should also be considered as falling within the protection scope of the present application.

Claims

1. A pull-up trouser with an anti-backflow and anti-leakage pocket structure, comprising a pull-up trouser body (1) and an anti-leakage pocket (2), characterized in that, The pull-up pants body (1) is composed of a top layer (11), an absorbent core (12), a leak-proof bottom film (13), and a bottom non-woven fabric (14) in sequence along the thickness direction. The top layer (11) is provided with leak-proof partitions (15) on both sides of the width direction of the pull-up pants body (1). The bottom non-woven fabric (14) extends outward at both ends along the length direction of the pull-up pants body (1) to form a waistband (16). The waistband (16) of one or both ends of the pull-up pants body (1) is provided with a pocket-shaped partition (3) facing the center of the surface of the outer layer (11). The pocket-shaped partition (3) and the outer layer (11) form a leak-proof pocket (2). The outer layer (11) and the leak-proof bottom film (13) are provided with an inner absorbent core (4) at a position relative to the leak-proof pocket (2). The bottom edge of the inner absorbent core (4) is bonded and fixed to the leak-proof bottom film (13). An inner cavity (5) is formed between the bottom of the inner absorbent core (4) and the leak-proof bottom film (13). The inner absorbent core (4) is composed of an upper covering layer (41), an inner absorbent layer (42), and a lower covering layer (43) in sequence along the thickness direction of the pull-up pants body (1). The upper covering layer (41) is located on the side close to the surface layer (11) and has a plurality of liquid inlets (44) on its surface. The inner absorbent layer (42) forms a liquid inlet channel (45) extending from the liquid inlet (44) to the surface of the lower covering layer (43). The upper covering layer (41) is provided with a liquid-blocking part (46) extending from the edge of the liquid inlet (44) along the liquid inlet channel (45) to the surface of the lower covering layer (43). The upper coating layer (41) is hydrophobic, and the lower coating layer (43) is hydrophilic. The upper coating layer (41) and the lower coating layer (43) are filled with absorbent material to form an inner absorbent layer (42). The inner absorbent layer (42) has several areas inside that are not filled with absorbent material, and each of these areas forms a liquid inlet channel (45).

2. The pull-up trousers with an anti-backflow and anti-leakage pocket structure according to claim 1, characterized in that, A plurality of hydrophobic fibers are filled between the liquid-blocking part (46) and the water-absorbing material of the inner absorbent layer (42). The hydrophobic fibers are uniformly wrapped around the inner wall of the liquid inlet channel (45) and form a hydrophobic layer (47). The hydrophobic fibers are hydrophobic.

3. The pull-up trousers with an anti-backflow and anti-leakage pocket structure according to claim 2, characterized in that, The diameter of the liquid inlet channel (45) is 0.5 mm to 2 mm, and the thickness of the hydrophobic layer (47) is 0.2 mm to 1 mm.

4. The pull-up trousers with an anti-backflow and anti-leakage pocket structure according to claim 1, characterized in that, The position of the upper coating layer (41) relative to the liquid inlet channel (45) is formed by cutting at least two intersecting cuts. At the same time as the cuts are formed, at least four liquid-blocking parts (46) are formed. The liquid-blocking parts (46) are all embedded inside the liquid inlet channel (45), and the tops of several liquid-blocking parts (46) together form the liquid inlet (44).

5. The pull-up trousers with an anti-backflow and anti-leakage pocket structure according to claim 1, characterized in that, The bottom nonwoven fabric (14) is folded upward at both ends along the length of the pull-up pants body (1) to form a folded part (161). The folded part (161) and the bottom nonwoven fabric (14) together form a waist part (16). The waist part (16) is provided with a number of waist spandex filaments (162) extending along the width direction of the pull-up pants body (1). The two waist sections (16) located at both ends of the length direction of the pull-up pants body (1) are connected end to end in width to form a ring-shaped waist structure.

6. The pull-up trousers with an anti-backflow and anti-leakage pocket structure according to claim 5, characterized in that, The pocket-shaped partition (3) is composed of two partition non-woven fabrics (31). One end of each of the two partition non-woven fabrics (31) is fixed between the fold (161) and the surface layer (11), and the other end extends toward the center of the surface layer (11). A number of partition spandex filaments (32) extending along the width direction of the pull-up pants body (1) are provided between the two partition non-woven fabrics (31).

7. The pull-up trousers with an anti-backflow and anti-leakage pocket structure according to claim 5, characterized in that, A waistband nonwoven fabric (163) is provided between the folded part (161) and the bottom nonwoven fabric (14). The waistband spandex filament (162) is provided between the waistband nonwoven fabric (163) and the bottom nonwoven fabric (14). The waistband spandex filament (162) is fixedly connected to the waistband nonwoven fabric (163) and the bottom nonwoven fabric (14) respectively by intermittently coating adhesive on both the upper and lower sides.

8. The pull-up trousers with an anti-backflow and anti-leakage pocket structure according to claim 1, characterized in that, The absorbent core (12) is composed of an upper nonwoven fabric (121), an upper absorbent material layer (122), a fluffy cotton layer (123), a lower absorbent material layer (124), and a lower nonwoven fabric (125) in sequence along the thickness direction of the pull-up pants body (1).

9. The pull-up trousers with an anti-backflow and anti-leakage pocket structure according to claim 1, characterized in that, The leak-proof partition (15) is composed of two pieces of leak-proof non-woven fabric (151). The two ends of the two pieces of leak-proof non-woven fabric (151) are fixedly connected to two waistbands (16) respectively. A number of leak-proof spandex filaments (152) extending along the length direction of the pull-up pants body (1) are provided between the two pieces of leak-proof non-woven fabric (151).

10. The pull-up trousers with an anti-backflow and anti-leakage pocket structure according to claim 9, characterized in that, One of the leak-proof nonwoven fabrics (151) of the leak-proof partition (15) extends to the edge of the bottom nonwoven fabric (14) in the width direction, and a plurality of leg spandex filaments (17) extending along the length direction of the pull-up pants body (1) are provided between the leak-proof nonwoven fabric (151) and the bottom nonwoven fabric (14).

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