Paper diaper capable of achieving rapid absorption

Abstract

The paper diaper comprises a paper diaper body, the paper diaper body comprises a surface layer, a flow guide layer, an absorption core body, a bottom layer and a waistline assembly, the absorption core body comprises a wrapping layer and an absorption body, an infiltration channel is formed in the middle of the absorption body, and the bottom layer is arranged on the surface of the surface layer. The two sides of the infiltration channel are sequentially connected with a first section, a bent part and a second section, the left side end and the right side end of the absorber are folded towards the lower surface of the absorber, the folded absorber and the wrapping layer form a first groove, liquid can be rapidly absorbed by the absorbing core body when entering the first groove, and the liquid can be rapidly absorbed by the absorbing core body when entering the first groove. The infiltration channel arranged in the middle of the absorber can enable infiltration of the liquid to be free of blocking, the surface layer non-woven fabric, the fluffy non-woven fabric layer and the bottom layer non-woven fabric in the infiltration channel of the core body can prevent reverse infiltration of the liquid in the first groove, and the surface of the paper diaper can still be kept dry when the paper diaper absorbs a large amount of liquid.

Description

Technical Field

[0001] The utility model relates to the field of disposable absorbent articles, in particular to a fast-absorbing diaper. Background Art

[0002] The main structure of diapers is composed of a surface layer, an absorbent core and a bottom layer. The performance of the diaper core is one of the key factors affecting the overall performance and quality of the diapers. The core's strong liquid absorption capacity can quickly and effectively absorb and store urine, thereby keeping the baby dry and comfortable. The inner core of conventional diapers is generally composed of a coating layer and a composite core wrapped in the coating layer. The composite core contains evenly distributed SAP particles. The inner core of conventional diapers has a more obvious disadvantage when used, that is, the liquid does not extend long enough in the inner core of the diaper, the core utilization efficiency is low, the local area carries a large amount of urine, and reverse osmosis is obvious. When babies wear such diapers, their skin is overhydrated, which can easily lead to frequent problems such as "red buttocks".

[0003] Based on the above situation, in the prior art, a patent with publication number CN109758305A discloses a diaper absorbent core and a preparation method thereof, wherein the absorbent core comprises a main body, and the main body comprises an upper covering layer, a first polymer absorbent layer, a fluffy cotton layer, a second polymer absorbent layer and a lower covering layer stacked in sequence from top to bottom, and the absorbent core is obtained by bending the two side ends of the main body toward the upper covering layer of the main body, and the two side ends are spaced relative to each other after bending, thereby forming a groove on the upper surface of the absorbent core. The absorbent core is an improvement on the absorbent core in the prior art, and the left and right ends of the absorbent core are bent so that the absorbent core presents a "C" shape as a whole, and a groove is formed on the upper surface to facilitate liquid diffusion, thereby solving the problem of side leakage of diapers caused by insufficient liquid diffusivity of the composite core of conventional diapers.

[0004] However, there are still some shortcomings in the use of the core. First, the polymer absorbent materials of the first polymer absorbent layer and the second polymer layer in the core are distributed in the same way, and the semicircular bending portion of the core does not reduce the spreading of SAP. After the core is folded back, hard and thick edges appear on the edges, which makes the overall core uneven, reducing the comfort of the baby when wearing diapers; second, the core is a non-upper and lower grooved core. When making diapers, the core still cannot achieve rapid liquid conduction at both ends and effectively improve the use efficiency of the core due to the lack of clear channels. Utility Model Content

[0005] In view of the technical defects existing in the background technology, the utility model proposes a fast-absorbing diaper, which can maintain the advantage of the existing core body that can absorb liquid in large quantities and quickly, while solving the problems of volatility and reverse osmosis of the existing core body after absorbing liquid. In order to further solve the above technical problems and meet actual needs, the specific technical solutions are as follows:

[0006] A fast-absorbing diaper, comprising a diaper body, wherein the diaper body comprises a surface layer, a guide layer, an absorbent core, a bottom layer and a waist assembly, wherein the surface layer, the guide layer, the absorbent core and the bottom layer are arranged in sequence from top to bottom along the thickness direction of the diaper body, and the waist assembly is arranged at both ends of the diaper body;

[0007] The absorbent core includes a covering layer and an absorbent body, an infiltration channel is provided in the middle of the absorbent body, and the two sides of the infiltration channel are connected to the first section, the bending part, and the second section in sequence. The absorbent core is bent toward the lower surface of the absorbent body at the bending part at the left and right side ends of the absorbent body, and the covering layer is surrounded by the outer periphery of the absorbent body after bending. The absorbent body contains absorbent particles, and the absorbent particles are arranged in different distribution amounts in the absorbent body.

[0008] Furthermore, after being bent, the left and right ends of the absorbent body are spaced a distance apart and parallel to each other, and are surrounded by the covering layer to form a first groove.

[0009] Furthermore, the absorbent body is provided with a surface non-woven fabric, a first absorbent layer, a fluffy non-woven fabric layer, a second absorbent layer, and a bottom non-woven fabric in sequence from top to bottom along the thickness direction, and the surface non-woven fabric, the first absorbent layer, the fluffy non-woven fabric layer, the second absorbent layer and the bottom non-woven fabric are bonded together by hot-melt adhesive.

[0010] Furthermore, the surface non-woven fabric and the bottom non-woven fabric are any one of hot air non-woven fabric, spunmelt non-woven fabric, and spunlace non-woven fabric.

[0011] Furthermore, the infiltration channel is vertically parallel to the first groove and is opposite to the first groove, and the infiltration channel and the first groove have the same size.

[0012] Furthermore, the bending parts on the left and right sides of the absorbent body form second grooves on the lower surfaces of the bending parts by reducing the addition of absorbent particles.

[0013] Furthermore, the absorbent particles are arranged in the first absorbent layer and the second absorbent layer, and the distribution amounts of the absorbent particles in the first absorbent layer and the second absorbent layer correspond to and are the same.

[0014] Furthermore, the distribution amount of the absorption particles in the first section and the second section is the same, and the distribution amount of the absorption particles in the bending part and the infiltration channel is smaller than the distribution amount in the first section and the second section.

[0015] The beneficial effects of the utility model are:

[0016] By folding the left and right side ends of the absorbent body toward the lower surface of the absorbent body, the folded absorbent body and the covering layer form a first groove, and the liquid can quickly diffuse laterally in the first groove, so that the liquid can be quickly absorbed by the absorbent core, thereby increasing the absorption performance of the absorbent core, so that the diaper can still keep the surface dry when absorbing a large amount of liquid. The infiltration channel arranged in the middle of the absorbent body can make the infiltration of the liquid unobstructed, so that the liquid can quickly infiltrate into the first groove. The first groove and the infiltration channel cooperate to enable the liquid to be quickly conducted at both ends, thereby effectively improving the use efficiency of the absorbent core. The bending part reduces the addition of absorbent particles. The edge of the folded absorbent core will not have hard edges and thick edges. The absorbent core is also flatter as a whole, thereby increasing the comfort of the baby when wearing the diaper. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the diaper main body in the thickness direction of the utility model.

[0018] Figure 2 This is a schematic diagram of the front structure of the diaper of the present invention.

[0019] Figure 3 This is a schematic diagram of the reverse structure of the diaper of the present invention.

[0020] Figure 4 This is a schematic diagram of the core structure of the utility model.

[0021] Figure 5 This is a schematic diagram of the absorber structure of the utility model.

[0022] Figure numerals: surface layer 1, guide layer 2, absorbent core 3, bottom layer 4, leak-proof partition 5, waist assembly 6, diaper body 7, covering layer 31, absorbent body 32, left end 321, right end 322, infiltration channel 323, second groove 324, first section 325, second section 326, bending portion 327, first groove 33, surface non-woven fabric 34, first absorbent layer 35, fluffy non-woven fabric layer 36, second absorbent layer 37, bottom non-woven fabric 38, absorbent particles 39, front waist circumference 61, waist patch 611, back waist circumference 62, Velcro 621, elastic waist circumference 63. DETAILED DESCRIPTION

[0023] The implementation methods of the present invention are described below in conjunction with the accompanying drawings and relevant embodiments. The implementation methods of the present invention are not limited to the following embodiments, and the present invention involves relevant necessary components in this technical field, which should be regarded as common knowledge in this technical field and can be known and mastered by technical personnel in this technical field.

[0024] like Figures 1 to 5 As shown, the utility model provides a technical solution: a fast-absorbing diaper, including a diaper body 7, the diaper body 7 includes a surface layer 1, a guide layer 2, an absorbent core 3, a bottom layer 4 and a waist assembly 6, the surface layer 1, the guide layer 2, the absorbent core 3, the bottom layer 4 are arranged in sequence from top to bottom along the thickness direction of the diaper body 7, the waist assembly 6 is arranged at both ends of the diaper body 7, the absorbent core 3 includes a coating layer 31 and an absorbent body 32, an infiltration channel 323 is provided in the middle of the absorbent body 32, and the two sides of the infiltration channel 323 are connected to a first section 325, a bending portion 327, and a second section 326 in sequence, the absorbent core 3 is formed by bending the left and right side ends of the absorbent body 32 at the bending portion 327 toward the lower surface of the absorbent body 32, and after bending, the coating layer 31 is surrounded by the outer periphery of the absorbent body 32, the absorbent body 32 contains absorbent particles 39, and the absorbent particles 39 are provided with different distribution amounts in the absorbent body 32.

[0025] The absorbent body 32 is bent at the bending portion 327, and the left end 321 and the right end 322 of the absorbent body 32 are folded toward the lower surface of the absorbent body 32 respectively. The first section 325 and the second section 326 of the folded absorbent body 32 overlap and are parallel to each other, so that the absorbent body 32 is in a "C" shape rotated 90° to the right. The folded absorbent body 32 and the covering layer 31 form a first groove 33, and the liquid can diffuse rapidly in the first groove 33 laterally, so that the liquid can be quickly absorbed by the absorbent core 3, thereby increasing the absorption performance of the absorbent core 3, thereby enhancing the overall performance and quality of the diaper. The infiltration channel 323 arranged in the middle position of the absorbent body 32 can make the infiltration of the liquid unobstructed, so that the liquid can quickly infiltrate into the first groove 33. The second groove 324 of the bending portion 327 can provide expansion space for the absorbent particles 39 in the bending portion 327, so that the absorbent core 3 does not deform after absorbing the liquid, thereby increasing the comfort of the baby wearing the diaper.

[0026] The infiltration channel 323 and the first groove 33 make the absorption core 3 form a core with upper and lower grooves, which can quickly conduct the liquid at both ends and effectively improve the use efficiency of the absorption core 3. The infiltration channel 323 is a through groove that is transparent from top to bottom, providing a clear channel for the infiltration of liquid. The first groove 33 provides a channel for the liquid to be quickly diffused and absorbed. When the absorption core 3 absorbs liquid, the liquid infiltrates into the first groove 33 along the infiltration channel 323. After entering the first groove 33, the liquid flows rapidly longitudinally along the groove direction of the first groove 33 and is dispersed in the first groove 33. Then, it is diffused and absorbed horizontally in the first groove 33, thereby increasing the utilization rate of the absorption core 3. The liquid is absorbed evenly and quickly by the absorbent core 3, thus effectively solving the problem of low efficiency of conventional cores and easy reverse osmosis caused by a large amount of urine in local areas, so that the diaper can still keep the surface dry when absorbing a large amount of liquid. At the same time, the surface non-woven fabric 34, fluffy non-woven fabric layer 36, and bottom non-woven fabric 38 in the infiltration channel 323 of the absorbent core 3 are sequentially attached to the top of the first groove 33, which can also block the reverse osmosis of the liquid in the first groove 33 to a certain extent.

[0027] like Figures 1 to 3 As shown, the surface layer 1, the guide layer 2, the absorbent core 3, and the bottom layer 4 can be bonded together by hot melt adhesive. The surface layer 1 and the guide layer 2 are made of non-woven fabrics, and the bottom layer 4 is composed of two materials: non-woven fabrics and PE film. The non-woven fabrics and the PE film are bonded by hot melt adhesive. The upper layer of the bottom layer 4 is PE film, and the lower layer is non-woven fabric. The upper surface of the surface layer 1 is symmetrically provided with leakproof edges 5. The leakproof edges 5 as a whole can prevent liquid from leaking from the side of the diaper. The leakproof edges 5 cooperate with the absorbent core 3 to further enhance the anti-side leakage capability of the diaper. The waist assembly 6 It includes a front waist circumference 61 and a rear waist circumference 62, which are respectively arranged at the two ends of the diaper body 7, and Velcro 62 is provided on both sides of the width direction of the rear waist circumference 62. The front waist circumference 61 is provided with a waist patch 611 that can be fitted with the Velcro 621. An elastic waist circumference 63 is sandwiched inside the waist circumference component 6. The elastic waist circumference 63 can make the waist circumference component 6 of the diaper elastic and can fit the baby's waist and abdomen more comfortably. The Velcro 621 is fitted with the waist patch 611, and the tightness of the waist circumference component 6 can be adjusted to make the baby more comfortable to wear.

[0028] As another preferred embodiment of the present invention, Figure 4As shown, after being bent, the left and right ends of the absorbent body 32 are spaced apart and parallel to each other, and are enclosed with the covering layer 31 to form a first groove 33. The first groove 33 is a rectangular groove extending along the length direction of the diaper body 7. The left end 321 and the right end 322 of the absorbent body 32 after being bent are tightly attached to the lower surface of the absorbent body 32. The left end 321 and the right end 322 of the absorbent body 32 respectively constitute the side walls of the first groove 33, and the covering layer 31 below the absorbent body 32 constitutes the bottom surface of the first groove 33.

[0029] As another preferred embodiment of the present invention, Figure 4 and Figure 5 As shown, the absorbent body 32 is provided with a surface non-woven fabric 34, a first absorbent layer 35, a fluffy non-woven fabric layer 36, a second absorbent layer 37, and a bottom non-woven fabric 38 in sequence from top to bottom along the thickness direction. The surface non-woven fabric 34, the first absorbent layer 35, the fluffy non-woven fabric layer 36, the second absorbent layer 37 and the bottom non-woven fabric 38 are bonded together by hot melt adhesive. When making the absorbent body 32, absorbent particles 39 are first bonded to the upper and lower surfaces of the fluffy non-woven fabric layer 36, and the absorbent particles 39 form an infiltration channel 323 in the middle section of the fluffy non-woven fabric layer 36. The absorbent particles 39 form a first absorbent layer 35 on the upper surface of the fluffy non-woven fabric layer 36, and the absorbent particles 39 form a second absorbent layer 37 on the lower surface of the fluffy non-woven fabric layer 36. The upper surface of the first absorbent layer 35 is bonded to the surface non-woven fabric 34, and the lower surface of the second absorbent layer 37 is bonded to the bottom non-woven fabric 38.

[0030] As another preferred embodiment of the present invention, Figure 4 and Figure 5 As shown, the surface non-woven fabric 34 and the bottom non-woven fabric 38 are any one of hot air non-woven fabric, spunmelt non-woven fabric and spunlace non-woven fabric. Hot air non-woven fabric, spunmelt non-woven fabric and spunlace non-woven fabric all have good air permeability and can provide good air circulation. When used in the production of the absorbent core 3, they can improve the comfort of the baby wearing diapers. At the same time, all three have anti-allergic properties and have little irritation to the skin, so they are suitable for people with sensitive skin such as babies. Hot air non-woven fabric has the characteristics of high fluffiness, good elasticity, soft hand feel, strong warmth retention and good air permeability. When used in the production of the absorbent core 3, it can improve the comfort of the diaper. The comfort and breathability can effectively reduce the occurrence of diaper rash and diaper rash. Spunmelt nonwoven fabrics and spunlace nonwoven fabrics have the characteristics of high water absorption, flexibility and good fit. When used in the production of the absorbent core 3, the high water absorption performance allows the absorbent core 3 to quickly absorb moisture from the baby's skin and keep it dry. The good flexibility and fit can make the absorbent core 3 softer and fit the baby's body contour. Spunmelt nonwoven fabrics are relatively thick, and the absorbent core 3 made of spunmelt nonwoven fabrics still feels relatively soft. The spunlace nonwoven fabrics are of moderate thickness, light and breathable, and are suitable for making light and thin absorbent cores 3 for use in summer.

[0031] As another preferred embodiment of the present invention, Figure 4 and Figure 5 As shown, the infiltration channel 323 is parallel to the first groove 33 in upper and lower directions and is opposite in position. The infiltration channel 323 has the same size as the first groove 33. The infiltration channel 323 is a rectangular channel arranged in the middle of the absorbent body 32 and extending along the length direction of the diaper body 7. The surface non-woven fabric 34, the fluffy non-woven fabric layer 36, and the bottom non-woven fabric 38 are horizontally interspersed in the infiltration channel 323 from top to bottom. The width of the infiltration channel 323 can be adjusted according to the width of the first groove 33 to ensure that when the liquid penetrates downward through the infiltration channel 323, it can quickly and accurately penetrate into the first groove 33. The first groove 33 can store a certain amount of liquid. The size of the first groove 33 determines the ability of the absorbent core 3 to instantly store a large amount of liquid. The width of the first groove 33 is proportional to its liquid storage capacity. Therefore, the absorbent core 3 with first grooves 33 of different widths can be designed according to the age of the baby.

[0032] As another preferred embodiment of the present invention, Figure 4 and Figure 5 As shown, the bending portions 327 on the left and right sides of the absorbent body 32 form second grooves 324 on the lower surface of the bending portions 327 by reducing the addition of absorbent particles 39. By reducing the addition of absorbent particles 39, a reserved space can be provided for the expansion of the absorbent particles 39, so as to avoid the deformation of the bending portions 327 after the absorbent particles 39 at the bending portions 327 expand due to liquid absorption, thereby ensuring that the absorbent core 3 does not deform. At the same time, the second grooves 324 of the bending portions 327 can also facilitate the folding of the left end 321 and the right end 322 of the absorbent body 32. When bending the absorbent body 32, it is only necessary to fold along the second grooves 324 so that the folded widths of the left end 321 and the right end 322 are the same after folding, thereby reducing the overall processing difficulty of the absorbent core 3. At the same time, since the bending portions 327 reduce the addition of SAP, the edges of the folded absorbent core 3 will not have hard edges and thick edges, and the absorbent core 3 is also flatter as a whole, thereby increasing the comfort of the baby when wearing the diaper.

[0033] As another preferred embodiment of the present invention, Figure 4 and Figure 5 As shown, the absorption particles 39 are arranged in the first absorption layer 35 and the second absorption layer 37, the distribution amounts of the absorption particles 39 in the first absorption layer 35 and the second absorption layer 37 correspond and are the same, the distribution amounts of the absorption particles 39 in the first section 325 and the second section 326 are the same, and the distribution amounts of the absorption particles 39 in the bending portion 327 and the infiltration channel 323 are smaller than the distribution amounts in the first section 325 and the second section 326.

[0034] The absorbent particles 39 are SAP, which are adhered to the surface of the fluffy non-woven fabric layer 36, and part of the SAP is embedded in the middle fluffy non-woven fabric layer 36. The absorbent particles 39 in the first absorbent layer 35 and the second absorbent layer 37 are arranged and distributed in the same manner, that is, the distribution amount of the absorbent particles 39 in the first absorbent layer 35 and the second absorbent layer 37 is the same in the same longitudinal section of the bending portion 327, the infiltration channel 323, the first section 325 and the second section 326, and the distribution amount of the absorbent particles 39 in the first absorbent layer 35 and the second absorbent layer 37 is the same in the absorbent layer 327, the infiltration channel 323, the first section 325 and the second section 326. The arrangement of the absorbent body 32 in different lateral sections is different, the distribution amount of the absorbent particles 39 in the first absorbent layer 35 and the second absorbent layer 37 in the first section 325 and the second section 326 is the same, the distribution amount of the absorbent particles 39 in the bending portion 327 is smaller than that in the first section 325 and the second section 326, the distribution amount of the absorbent particles 39 in the infiltration channel 323 is smaller than that in the first section 325 and the second section 326, or no absorbent particles 39 are added in the infiltration channel 323.

[0035] The purpose of reducing the amount of absorbent particles 39 added in the infiltration channel 323 or not adding absorbent particles 39 is to ensure that the infiltration channel 323 has sufficient permeability. When a small amount of absorbent particles 39 is added to the infiltration channel 323, a buffer can be provided for the absorption of a larger amount of liquid on the basis of ensuring the permeability of the infiltration channel 323, thereby reducing the working pressure of the first groove 33 when absorbing liquid. When a large amount of liquid infiltrates rapidly, the absorbent particles 39 in the infiltration channel 323 can absorb a part of the liquid, and the remaining part of the liquid continues to pass through the infiltration channel 323 into the first groove 33, and then enters the first groove 33. The amount of liquid absorbed in a groove 33 is less than the total amount of liquid, thereby alleviating the working pressure when the first groove 33 absorbs liquid, allowing the first groove 33 to quickly absorb the liquid in the groove, reducing the residence time of the liquid in the first groove 33, thereby enhancing the absorption capacity of the absorption core 3; when no absorbent particles 39 are added to the infiltration channel 39, the infiltration of the liquid is unobstructed, and the liquid can quickly pass through the infiltration channel 323 and reach the first groove 33, so that the liquid is diffused and absorbed in the first groove 33, so that the absorption core 3 has the ability to quickly absorb liquid.

[0036] The above is only a preferred embodiment of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A fast-absorbing diaper, comprising a diaper body (7), characterized in that: The diaper body (7) comprises a surface layer (1), a guide layer (2), an absorbent core (3), a bottom layer (4) and a waist assembly (6); the surface layer (1), the guide layer (2), the absorbent core (3) and the bottom layer (4) are arranged in sequence from top to bottom along the thickness direction of the diaper body (7); and the waist assembly (6) is arranged at both ends of the diaper body (7); The absorbent core (3) comprises a coating layer (31) and an absorbent body (32); an infiltration channel (323) is provided in the middle of the absorbent body (32); the two sides of the infiltration channel (323) are connected in sequence to a first section (325), a bending portion (327), and a second section (326); the absorbent core (3) is formed by bending the left and right side ends of the absorbent body (32) toward the lower surface of the absorbent body (32) at the bending portion (327); and after bending, the coating layer (31) is surrounded by the outer periphery of the absorbent body (32); the absorbent body (32) contains absorbent particles (39); and the absorbent particles (39) are arranged in different distribution amounts in the absorbent body (32).

2. A fast-absorbing diaper according to claim 1, characterized in that: After being bent, the left and right ends of the absorbent body (32) are spaced a distance apart and are parallel to each other, and are enclosed with the covering layer (31) to form a first groove (33).

3. A fast-absorbing diaper according to claim 1, characterized in that: The absorbent body (32) is provided with a surface non-woven fabric (34), a first absorbent layer (35), a fluffy non-woven fabric layer (36), a second absorbent layer (37), and a bottom non-woven fabric (38) in order from top to bottom along the thickness direction; the surface non-woven fabric (34), the first absorbent layer (35), the fluffy non-woven fabric layer (36), the second absorbent layer (37), and the bottom non-woven fabric (38) are bonded together by hot-melt adhesive.

4. A fast-absorbing diaper according to claim 3, characterized in that: The surface non-woven fabric (34) and the bottom non-woven fabric (38) are any one of hot air non-woven fabric, spunmelt non-woven fabric, and spunlace non-woven fabric.

5. A fast-absorbing diaper according to claim 2, characterized in that: The infiltration channel (323) is vertically parallel to the first groove (33) and is located opposite to the first groove (33); the infiltration channel (323) and the first groove (33) are of the same size.

6. A fast-absorbing diaper according to claim 3, characterized in that: The bent portions (327) on the left and right sides of the absorbent body (32) form second grooves (324) on the lower surface of the bent portions (327) by reducing the addition of absorbent particles (39).

7. A fast-absorbing diaper according to claim 3, characterized in that: The absorption particles (39) are arranged in the first absorption layer (35) and the second absorption layer (37), and the distribution amounts of the absorption particles (39) in the first absorption layer (35) and the second absorption layer (37) correspond and are the same.

8. A fast-absorbing diaper according to claim 7, characterized in that: The absorption particles (39) are distributed in the same amount in the first section (325) and the second section (326), and the absorption particles (39) are distributed in the bending portion (327) and the infiltration channel (323) less than the first section (325) and the second section (326).

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