CN113599083A

CN113599083A - Omnibearing leakage-proof absorption article and forming process thereof

Info

Publication number: CN113599083A
Application number: CN202110843069.0A
Authority: CN
Inventors: 林笛; 高奇晖
Original assignee: Quanzhou Hanwei Machinery Manufacturing Co Ltd
Current assignee: Quanzhou Hanwei Machinery Manufacturing Co Ltd
Priority date: 2021-07-26
Filing date: 2021-07-26
Publication date: 2021-11-05
Anticipated expiration: 2041-07-26
Also published as: CN113599083B

Abstract

The invention relates to the field of disposable sanitary products, in particular to an all-dimensional leakage-proof absorption article which comprises a body, an upper-layer absorption body arranged in the body, and leg surrounding parts arranged on the body and positioned at two sides of the upper-layer absorption body in the width direction, wherein the leg surrounding parts comprise at least two leg surrounding material layers and leg surrounding elastic bodies clamped between the two leg surrounding material layers, the body is provided with a longitudinal direction along the length direction and a transverse direction along the width direction, a lower-layer absorption body is arranged below the upper-layer absorption body in the body, the width of the lower-layer absorption body is larger than that of the upper-layer absorption body, the lower-layer absorption body respectively extends into the leg surrounding parts along two transverse sides of the body to form absorption retaining edges, the middle parts of the absorption retaining edges are not bonded with the upper absorption body, and the flow guide direction of the middle parts of the absorption retaining edges is along the longitudinal direction or the transverse direction. It has solved the current technical problem that prevents that the edge leakage effect is not enough. A forming process of the omnibearing leakage-proof absorption article is also provided.

Description

Omnibearing leakage-proof absorption article and forming process thereof

Technical Field

The invention relates to the field of disposable sanitary products, in particular to an all-dimensional leakage-proof absorption article and a forming process thereof.

Background

Wherein features having an upper absorber and a lower absorber are disclosed. In the existing disposable absorbent article, how to achieve effective side leakage prevention and reduce the side leakage risk is an important index, and various manufacturers also make a great deal of research on the side leakage prevention absorbent article, such as chinese patent application No.: CN201280030608.8 discloses an absorbent article having improved leakage protection when the wearer of the absorbent article lies on his side. The absorbent article has a surge layer in liquid communication with a portion of the garment facing region of the absorbent core and a portion of the side edges of the absorbent core. But its side leakage preventing effect is still insufficient

In addition, in the existing disposable absorbent articles, the effective collection is also realized by adopting a double-absorber mode, such as the Chinese patent application No.: CN201380043482.2 discloses an absorbent article, wherein an absorbent body (4) includes a lower absorbent body (41) extending over the entire length of a diaper (1A) and an upper absorbent body (42) extending from only a stomach portion (a) to a crotch portion (C), and the absorbent body (4) is divided into a main absorbent region (4M) where the upper absorbent body (42) overlaps with the lower absorbent body (41) and a sub-absorbent region (4E) other than the main absorbent region. The grammage of the absorbent polymer of the lower layer absorbent body (41) is greater in the main absorbent region (4M) than in the sub-absorbent region (4E). The grammage of the absorbent polymer of the upper layer absorbent body (42) is smaller than that of the lower layer absorbent body (41). The indicator coating region (60) is disposed in the main absorbent region (4M), and the end (60B) of the indicator coating region (60) on the back side (B) side is located in the vicinity of the end (4Mb) of the main absorbent region (4M) on the back side (B) side.

The applicant has made corresponding studies based on the basis of the side leakage prevention and the double-layer absorber.

Disclosure of Invention

Therefore, in order to solve the above problems, the present invention provides an all-directional leakproof absorbent article, which solves the technical problem of insufficient side leakage prevention effect in the prior art. And a forming process of the omnibearing leakage-proof absorption article based on the same invention concept is also provided.

In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides an all-round leak protection absorbed article, includes the body, locates this internal upper absorber, locates the leg portion of enclosing that lies in upper absorber width direction both sides on the body, the leg portion of enclosing includes at least two-layer leg material layer and centre gripping in wherein the leg between two-layer leg material layer encloses the elastomer, the body has along length direction's vertically, has along width direction's transversely, this internal below that lies in upper absorber is provided with lower floor's absorber, lower floor's absorber is greater than upper absorber along the horizontal width of body, lower floor's absorber extends into leg portion of enclosing respectively along the horizontal both sides of body and forms the absorbability flange, the middle part and the last absorber of absorbability flange do not adhere, the water conservancy diversion direction at the middle part of absorbability flange is along vertically or transversely.

Further, the absorbent rib is clamped between the two leg surrounding material layers.

Further, the body includes by the hydrophobic non-woven fabrics, PE membrane, the surface course of supreme range upon range of setting up down, the upper absorber is located between surface course and the PE membrane, lower floor's absorber is located between upper absorber and the PE membrane, hydrophobic non-woven fabrics, PE membrane, surface course upwards buckle respectively along the horizontal both sides of body respectively and extend and compound formation extension, lower floor's absorber centre gripping is between PE membrane and surface course.

Furthermore, the water-repellent non-woven fabric and the PE film are upwards extended continuously by the extension part and then are turned inwards to form a turning part, and the leg surrounding elastic bodies are arranged at the turning part and clamped between the water-repellent non-woven fabric and the PE film.

Furthermore, the leg surrounding elastic bodies are rubber bands, the number of the elastic bodies is two, and the elastic bodies are respectively arranged at the end parts of the folding parts and the turning parts of the folding parts.

Further, the upper absorber comprises an upper diffusion layer, an upper fluffy non-woven fabric and an upper diffusion non-woven fabric which are stacked from top to bottom, and SAP particles are distributed on the upper fluffy non-woven fabric.

Further, the vertical imbibition climbing rate of the upper diffusion layer or the upper diffusion non-woven fabric is more than 100 mm/min.

Further, the lower-layer absorber comprises a lower diffusion layer, a lower fluffy non-woven fabric and a lower diffusion non-woven fabric which are stacked from top to bottom, and lower SAP particles are distributed on the lower fluffy non-woven fabric.

Further, the vertical imbibition climbing rate of the lower diffusion layer or the lower diffusion non-woven fabric is more than 200 mm/min.

Furthermore, the absorptive flanges are folded inwards at the two longitudinal ends of the upper layer absorber and cover the upper layer absorber to form bonding parts.

Further, the water absorption performance of the bonding part is larger than that of the rest positions of the absorption ribs.

The invention relates to a forming process of an all-dimensional leakproof absorption article based on the same invention concept, which comprises the following steps:

the method comprises the following steps of firstly, respectively forming an upper layer absorber and a lower layer absorber, wherein the width of the lower layer absorber is larger than that of the upper layer absorber, and the excess part forms an excess area;

and secondly, clamping the excess area between two leg surrounding material layers, enabling the leg surrounding material layers to form leg surrounding parts on two sides of the upper-layer absorber, then compounding the leg surrounding parts on the body, or turning over two sides of the body to cover the excess area, and forming the leg surrounding parts on two sides of the upper-layer absorber.

By adopting the technical scheme, the invention has the beneficial effects that:

1. this scheme utilization lower floor's absorbent cigarette body horizontal width is greater than the upper absorber along the horizontal width of body, thereby make the lower floor's absorbent extend into leg portion of enclosing formation absorptivity flange along the horizontal both sides of body respectively, this flange has actually become the partly of leg portion of enclosing, thereby the production of the absorbency of leg portion of enclosing has been realized, can effectively realize the leak-proof effect, when actually wearing, the absorptivity flange can be followed the leg and enclosed and carried out the buckling, form and upper absorber are close to the vertically state, this kind of state can effectively guarantee stopping to the side leakage, absorb. It should be noted that the part of the lower layer absorbent body that exceeds the upper layer absorbent body is not limited in size, and it is only necessary to form the absorbent rib, that is, the absorbent rib may form a certain included angle with the upper layer absorbent body. In addition, since the leg-surrounding portions are of a certain width, the lower absorbent body does not need to cover the width completely, but may extend halfway or more, depending on factors such as material costs and the need for leakage properties. In addition, the leg surrounding material layer can be set according to actual needs, for example, the conventional single-layer or multi-layer non-woven fabric is folded to form, the material can adopt hot air non-woven fabric to be matched with water-repellent non-woven fabric, and can also adopt PE film to be matched with the hot air non-woven fabric.

This scheme can be applicable to diaper formula panty-shape diapers or pants formula panty-shape diapers.

In actual wearing, when the wearer lies on the side, the flow direction of the liquid is rotated by 90 degrees compared with the normal posture, so that the absorption can be effectively enhanced by arranging a lower layer of the absorption body which is turned by 90 degrees. Here, the liquid diffusion direction of the lower absorbent body may be set to diffuse in the longitudinal direction of the main body, may be set to diffuse in the lateral direction of the main body, and may be set to a diffusion direction and a diffusion efficiency as needed. The absorption performance of the lower layer absorber is not critical in practice, and the key point is that the lower layer absorber can effectively enhance the capillary effect, so that liquid can be quickly diffused to the crossed area of the upper layer absorber and the lower layer absorber and then is respectively absorbed by the upper layer absorber and the lower layer absorber. Thereby effectively reducing the occurrence of the side leakage phenomenon.

2. The absorptive flanges are clamped between the two leg surrounding material layers, and the absorptive flanges can be better fixed and can be effectively bent when being worn.

3. Refuse water non-woven fabrics, PE membrane, surface course and upwards buckle respectively along the horizontal both sides of body respectively and extend and compound formation extension, lower floor's absorber centre gripping is between PE membrane and surface course, can effectively realize the absorptive realization of side leakage of lower floor's absorber like this to the cooperation is refused water non-woven fabrics, PE membrane and is realized better preventing the side leakage. The surface layer can be made of hot air non-woven fabric or other non-woven fabric materials which can permeate water.

4. Refuse water non-woven fabrics and PE membrane and upwards continue to extend to turn over the formation in the back by the extension and turn over a portion, the leg encloses the elastomer and locates to turn over a portion and centre gripping between refusing water non-woven fabrics and PE membrane, such mode of setting up can be so that refuse water non-woven fabrics, PE membrane, surface course formation better leg and enclose the portion to through the implementation of turning over a portion, can effectively realize the travelling comfort of health contact, effectively realize preventing the edge leakage. In addition, the leg surrounding elastic bodies are rubber bands, the number of the leg surrounding elastic bodies is two, the leg surrounding elastic bodies are respectively arranged at the end parts of the turning parts and the turning parts of the turning parts, the rubber bands are arranged, so that when the absorbent article is worn, the leg surrounding parts can obtain a better inward turning three-dimensional effect, and the stretching rates of all the groups are different, so that the three-dimensional effect is better realized.

5. The setting of upper absorber, lower floor's absorber can be so that absorptive effect is better, and the perpendicular imbibition climbing rate through upper diffusion layer or upper diffusion non-woven fabrics is greater than 100mm/min, and the perpendicular imbibition climbing rate of lower diffusion layer or lower diffusion non-woven fabrics is greater than 200mm/min, can realize better absorption and diffusion. In addition, the adjustment of the performance such as the infiltration efficiency and the absorption efficiency can be realized by setting the thicknesses of the upper layer absorber and the lower layer absorber, the density distribution of the SAP particles, and the like. Wherein, the infiltration efficiency of the upper layer absorber can be larger than that of the lower layer absorber, and the absorption performance of the lower layer absorber can be larger than that of the upper layer absorber. The upper layer absorber can be provided with infiltration channels, such as holes, gaps, grooves and the like.

Drawings

FIG. 1 is a schematic view of the expanded configuration of the present invention;

FIG. 2 is a schematic view of the expanded perspective structure of the present invention;

FIG. 3 is a schematic view of the configuration of the upper layer absorbent body in cooperation with the lower layer absorbent body;

FIG. 4 is a schematic cross-sectional view of the mating of an upper absorbent body with a lower absorbent body;

FIG. 5 is a schematic cross-sectional view of a combination of an upper absorber and a lower absorber with the addition of a cover;

FIG. 6 is a schematic view of a stacking arrangement of the present invention;

FIG. 7 is a schematic view of the leg hole portion formed in a stacked manner shown in FIG. 6;

FIG. 8 is a schematic structural view of another manner of mating an upper absorbent layer with a lower absorbent layer;

FIG. 9 is a schematic view of the area of the lower core body with SAP particles dispersed therein;

FIG. 10 is a schematic view of the third zone of FIG. 9 with flow directed in the longitudinal direction;

FIG. 11 is a schematic view of the third region of FIG. 9 with flow directed in the cross direction;

FIG. 12 is a schematic illustration of the overreach package of FIG. 9;

fig. 13 is a schematic cross-sectional structure of fig. 1.

Description of reference numerals:

1. a body; 2. an upper layer absorber; 21. an upper diffusion layer; 22. fluffy non-woven fabrics are arranged; 23. upper diffusion non-woven fabric; 24. upper SAP particles; 25. applying toilet paper; 3. a lower layer absorber; 31. a lower diffusion layer; 32. fluffy non-woven fabrics are put; 33. a lower diffusion non-woven fabric; 34. a lower SAP particle; 35; putting toilet paper; 4. a leg-surrounding part; 3a, an excess area; 3b, a first broadcast area; 3c, a second broadcast area; 3d, a third area; 41. an extension portion; 42. a folding part; 43. a leg elastic body; 5. an absorbent rib; 51. an adhesive portion; 6. water-repellent non-woven fabric; 7. a PE film; 8. a surface layer; 9. and (4) glue.

Detailed Description

The invention will now be further described with reference to the accompanying drawings and detailed description.

Referring to fig. 1 to 4, the present embodiment provides an all-directional leakage-proof absorbent article, including a body 1, an upper layer absorbent body 2 disposed in the body 1, and leg surrounding portions 4 disposed on the body 1 and located on both sides of the width direction of the upper layer absorbent body 2, wherein the leg surrounding portions 4 include at least two leg surrounding material layers and leg surrounding elastic bodies 43 sandwiched between the two leg surrounding material layers, the body 1 has a longitudinal direction along a length direction and a transverse direction along the width direction, a lower layer absorbent body 3 is disposed in the body 1 below the upper layer absorbent body 2, the transverse width of the lower layer absorbent body 3 along the body 1 is greater than the transverse width of the upper layer absorbent body 2 along the body 1, and as shown in fig. 2, the exceeding portion is a exceeding region 3 a. The lower layer absorber 3 extends into the leg surrounding parts 4 along the two transverse sides of the body 1 to form an absorbing flange 5. The absorbent rib 5 is clamped between two of the leg surrounding material layers. The upper absorber 2 comprises an upper diffusion layer 21, an upper fluffy non-woven fabric 22 and an upper diffusion non-woven fabric 23 which are stacked from top to bottom, SAP particles 24 are distributed on the upper fluffy non-woven fabric 22, and the layers can be bonded by glue 9. The vertical imbibition climbing efficiency of the upper diffusion layer 21 or the upper diffusion non-woven fabric 23 is more than 100 mm/min. The lower layer absorber 3 comprises a lower diffusion layer 31, a lower fluffy non-woven fabric 32 and a lower diffusion non-woven fabric 33 which are stacked from top to bottom, lower SAP particles 34 are distributed on the lower fluffy non-woven fabric 32, and the layers can be bonded by glue 9. The vertical imbibition climbing efficiency of the lower diffusion layer 31 or the lower diffusion non-woven fabric 33 is more than 200 mm/min.

In practical applications, the upper absorbent body 2 may also be coated with an upper toilet paper 25, as shown in fig. 5. The lower absorbent body 3 may be covered with the lower toilet paper 35. And the specific layer arrangement of the upper layer absorber and the lower layer absorber can be changed according to the actual requirement as long as the purpose of absorption can be realized.

The scheme is represented by a pants-type diaper, which may be a diaper-type diaper.

Referring to fig. 6 and 7 again, it mainly shows another kind of forming mode of leg portion, body 1 includes the non-woven fabrics 6 of refusing water, PE membrane 7, surface course 8 by lower supreme range upon range of setting, upper absorber 2 locates between surface course 8 and PE membrane 7, lower floor's absorber 3 locates between upper absorber 2 and PE membrane 7, the non-woven fabrics 6 of refusing water, PE membrane 7, surface course 8 are upwards buckled respectively along the horizontal both sides of body 1 respectively and are extended and compound and form extension 41, lower floor's absorber 3 centre gripping is between PE membrane 7 and surface course 8. The water-repellent non-woven fabric 6 and the PE film 7 are further extended upwards by the extension portion 41 and then folded inwards to form a folded portion 42, and the leg-surrounding elastic body 43 is arranged at the folded portion 42 and clamped between the water-repellent non-woven fabric 6 and the PE film 7. The leg elastic bodies 43 are two groups of rubber bands, and are respectively arranged at the end of the folding part 42 and the turning part of the folding part 42.

In the scheme, the laminated style can be increased or decreased according to actual needs, and the leg surrounding parts can be arranged according to needs. The leg-surrounding portions may be disposed in a conventional manner, but need only be wrapped around the absorbent rib portions of the lower absorbent member.

Referring again to fig. 13, the present solution is a schematic cross-sectional view of fig. 1, which shows a different leg-surrounding portion structure, which is formed by folding a nonwoven fabric, and the lower layer absorber is clamped therein. In this scheme, the concrete structure of body 1 can set up according to actual needs, and leg surrounding material layer centre gripping lower floor's absorber upwards extends along the side of upper absorber, has formed extension 41 equally, has then turned over again, has formed turnover portion 42 equally, utilizes the interval setting of multiunit leg surrounding elastomer 43 to the shaping of a three-dimensional absorptivity flange has been reached. The scheme is only a structural form of the leg surrounding parts.

Referring to fig. 8 again, the absorbent ribs 5 are folded inward at both ends of the upper layer absorbent body 2 in the longitudinal direction and cover the upper layer absorbent body 2 to form bonding portions 51, and the middle portions of the absorbent ribs 5 are not bonded to the upper layer absorbent body. The length of lower floor's absorber along the body is vertical in this scheme can set up as required, and upper absorber relatively can be shorter, equal or slightly long. Fig. 8 shows the equal state, and fig. 3 shows the shorter state.

Referring again to fig. 9, the lower absorbent body can be positioned for SAP distribution to form an i-shaped configuration. Wherein the polymer spreading region at the overlapping portion of the lower layer absorber 3 and the upper layer absorber is a first spreading region 3b, wherein the four polymer spreading regions at the portion of the lower layer absorber 3 beyond the upper layer absorber 2 are second spreading regions 3c, and the region of the lower layer absorber 3 beyond the upper layer absorber 2 without polymer spreading is a third region 3 d.

In the third area 3d, the diversion effect can be set according to actual needs, as shown in fig. 10, the third area 3d can be set to mainly divert along the longitudinal direction, and the diversion direction is diversion from the middle of the longitudinal direction of the third area 3d to both sides, as shown in fig. 11, the third area 3d can be set to mainly divert along the transverse direction, and the diversion direction is diversion from both sides of the transverse direction of the third area 3d to the upper layer absorber. The setting of third region 3d is also in order to prevent that the solid is protected the too much comfort level that influences of imbibition, does not set up behind the SAP granule, and it becomes the water conservancy diversion and not imbibition, can improve the travelling comfort greatly.

Referring again to fig. 12, which is a state after being folded, specifically, referring to fig. 8, after being folded, a bonding portion 51 (shown in a manner of thickening lines for easy recognition) is formed, in which two polymer spreading regions actually exist, that is, the second spreading region 3c overlaps the first spreading region 3b to form a reinforced absorption region, which has a reinforced absorption effect when a liquid flows along the thighs in a side-lying posture to the front and rear ends.

secondly, the excess area is clamped between two leg surrounding material layers, and the leg surrounding material layers form leg surrounding parts on two sides of the upper layer absorber, and then are compounded on the body, as shown in the state of fig. 13.

The second step can also be replaced by: both sides of the body are folded over to cover the excess area, and leg-surrounding portions are formed on both sides of the upper layer absorber, as shown in fig. 7.

The invention has the beneficial effects that:

4. Refuse water non-woven fabrics and PE membrane and upwards continue to extend to turn over the formation in the back by the extension and turn over a portion, the leg encloses the elastomer and locates to turn over a portion and centre gripping between refusing water non-woven fabrics and PE membrane, such mode of setting up can be so that refuse water non-woven fabrics, PE membrane, surface course formation better leg and enclose the portion to through the implementation of turning over a portion, can effectively realize the travelling comfort of health contact, effectively realize preventing the edge leakage. In addition, the leg surrounding elastic bodies are two groups of rubber bands which are respectively arranged at the end parts of the folding parts and the folding parts, and the arrangement of the rubber bands can ensure that the leg surrounding parts can obtain better three-dimensional effect when the absorbing article is worn.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides an all-round leak protection absorbent article, includes body (1), locates upper absorber (2) in body (1), locates lower floor's absorber (3) that lie in upper absorber (2) below in body (1) and locates leg portion of enclosing (4) that lie in upper absorber (2) width direction both sides on body (1), leg portion of enclosing (4) encloses elastomer (43) including at least two-layer leg material layer and the leg of centre gripping between wherein two-layer leg material layer, body (1) has along length direction vertically, has along width direction's transversely, its characterized in that: lower floor's absorber (3) are greater than upper absorber (2) along the horizontal width of body (1) in body (1), lower floor's absorber (3) extend into leg portion of enclosing (4) formation absorbability flange (5) respectively along the horizontal both sides of body (1), the middle part and the last absorber of absorbability flange (5) do not adhere, the water conservancy diversion direction at the middle part of absorbability flange (5) is along vertically or transversely.

2. The all-round leak-proof absorbent article of claim 1, wherein: the absorbent ribs (5) are clamped between the two leg surrounding material layers.

3. The all-round leak-proof absorbent article of claim 2, wherein: the body (1) includes by the hydrophobic non-woven fabrics (6), PE membrane (7), surface course (8) of lower supreme range upon range of setting, upper absorber (2) are located between surface course (8) and PE membrane (7), lower floor's absorber (3) are located between upper absorber (2) and PE membrane (7), hydrophobic non-woven fabrics (6), PE membrane (7), surface course (8) are upwards buckled respectively along the horizontal both sides of body (1) respectively and are extended and compound formation extension (41), lower floor's absorber (3) centre gripping is between PE membrane (7) and surface course (8).

4. The all-round, leak-proof absorbent article of claim 3, wherein: the water repellent non-woven fabric (6) and the PE film (7) are upwards continued to extend by the extension portion (41) and then are turned inwards to form a turning portion (42), and the leg surrounding elastic body (43) is arranged at the turning portion (42) and clamped between the water repellent non-woven fabric (6) and the PE film (7).

5. The all-round, leak-proof absorbent article of claim 4, wherein: the leg surrounding elastic bodies (43) are rubber bands, the number of the elastic bodies is two, and the elastic bodies are respectively arranged at the end part of the folding part (42) and the turning part of the folding part (42).

6. An all-around leak-proof absorbent article as defined in any of claims 1 to 5, wherein: the upper-layer absorber (2) comprises an upper diffusion layer (21), an upper fluffy non-woven fabric (22) and an upper diffusion non-woven fabric (23) which are stacked from top to bottom, and SAP particles (24) are arranged on the upper fluffy non-woven fabric (22).

7. The all-round, leak-proof absorbent article of claim 6, wherein: the vertical imbibition climbing rate of the upper diffusion layer (21) or the upper diffusion non-woven fabric (23) is more than 100 mm/min.

8. An all-around leak-proof absorbent article as defined in any of claims 1 to 5, wherein: the lower layer absorber (3) comprises a lower diffusion layer (31), a lower fluffy non-woven fabric (32) and a lower diffusion non-woven fabric (33) which are stacked from top to bottom, and lower SAP particles (34) are arranged on the lower fluffy non-woven fabric (32).

9. An all-around leak-proof absorbent article as defined in any of claims 1 to 5, wherein: the absorptive flanges (5) are folded inwards at the two longitudinal ends of the upper layer absorber (2) and cover the upper layer absorber (2) to form bonding parts (51).

10. A process for forming an all-dimensional leakproof absorbent article as claimed in any one of claims 1 to 5, comprising the steps of: