MXPA98006912A - Absorbent article disposable with barriers inter - Google Patents

Abstract

The present invention relates to a disposable absorbent article such as disposable diapers for babies, disposable diapers for adult incontinent or feminine sanitary napkins, which has internal anti-runoff barriers consisting of two strips of material that can be waterproof, hydrophobic, resistant to passage of the liquids, etc., placed adjacent to the longitudinal edges of the absorbent core at least in the crotch region between the inner layer and the outer layer of the absorbent article so as to avoid any type of run-off from the lateral edges of the absorbent article. core absorb

Description

ABSORBENT ARTICLE DISPOSABLE WITH INTERNAL BARRIERS BACKGROUND OF THE INVENTION Disposable absorbent articles have become indispensable in the daily life of any family. For this reason, the industry of disposable absorbent articles has developed considerably in relation to the infinity of technical proposals aimed at improving said articles. However, despite considerable efforts in research and development, some problems continue to arise in disposable absorbent articles, which it has not been possible to correct in its entirety. Among these problems, it is relevant to the lateral draining of liquids, which are presented in the disposable absorbent articles and which refer to liquids that drain to the sides thereof without being able to be absorbed and retained by the absorbent core. A multitude of proposals have arisen to correct the lateral draining of liquids on the surface of the layer that is in contact with the user, but despite the fact that many inventions have largely eliminated this problem, they have not been able to solve it. full. This is because the internal side runoff occurring in the absorbent core between the permeable layer and the impermeable layer and which are solved with the present invention had not been considered. The main function of the disposable absorbent articles, such as disposable diapers for babies, disposable diapers for incontinent adults and feminine sanitary napkins, is to absorb and retain the body exudates of the users. A disposable diaper typically consists of an outer layer impervious to liquids, a liquid permeable inner layer, an absorbent core lying between the two layers, which are usually cotermines and are sealed in their peripheral outline around the absorbent core; in addition, a diaper has at the ends two elastic bands that are in the longitudinal center for adjustment at the user's waist at the time of use; two tape tabs placed on the back adhered to the inner and outer layers near the corners of the diaper and one or more bands of tape on the waterproof layer on the front, the previous elements forming a fastening system for placing the diaper in the user; one or more elastic strands or bands in the crotch region to adjust this region to the user's legs during use by creating a barrier or seal around the user's legs. The diaper may further have two lateral barriers placed on the inner layer thereof throughout the length of the diaper positioned adjacent the longitudinal edges of the absorbent material at least in the crotch region. As the inner layer of the permeable diaper, liquids pass through it to be absorbed and retained by the absorbent core; As is logical, the crotch part of the absorbent core is the one that works the most and once it is saturated, the liquid begins to distribute to other parts of it. Many attempts have been made to achieve a good distribution of the fluids within the absorbent core; However, the discharge of liquids is always in the central part of the absorbent core and once this part is saturated, the liquid begins to distribute to the other parts of the same, most of the time reaching the lateral parts of the latter. in the crotch section before the liquid is distributed to the other parts thereof, thus causing runoff through the lateral parts of the diaper, since the liquid once it reaches the longitudinal edges of the absorbent core, flows rapidly towards the edges of the diaper, making the clothes that are in contact with it dirty. In fact, an optimal solution to solve this problem has not yet been found. In this order of ideas, some systems have been developed focused on avoiding the passage to the longitudinal edges of the diaper of liquid or semi-liquid exudates that are not quickly absorbed and remain floating on the inner layer of the diaper. Examples of this type of systems are described in the Mexican patents numbers 161,292; 161,320 and 185,778. The barriers disclosed in these patents are external lateral barriers and they are placed on the inner layer of the diaper and have a border fixed to the inner layer thereof and an elastic element placed on the other edge to separate it from the inner layer. These barriers have been shown to be effective in retarding significantly the passage of liquid exudates or liquids to the longitudinal edges of the absorbent article; however, the exudates that have already passed into the absorbent core and tend to leave the longitudinal edges thereof do not encounter any barrier and flow easily to the longitudinal edges of the diaper, with the risk of soiling the clothing in contact with the same. . US Patent No. 5,192,606 to Kimberly Clark Corporation, issued March 9, 1993, discloses a disposable absorbent article comprising a backing layer, a front waist section, a rear waist section and a crotch section interconnecting the section of front waist with the rear waist section, an absorbent core, an intermediate transfer layer, which is liquid permeable, and a body side liner, the body side lining comprising a bonded carded fabric, composed of fibers bi-components having a denier per fiber of 1.0 to 3.0. The absorbent structure of the present invention provides a liner, which can provide an uptake of body exudates and can maintain the collection range after the absorbent structure has been previously moistened with one or more liquid discharges. The cited invention can help prevent the return of liquids to the surface of the permeable top layer, avoiding contact with the user's skin and more quickly transmitting the liquid from the contact surface with the user's skin into the structure absorbent, but does not solve the problem of the containment of liquids inside the absorbent core, avoiding leaks or leaks by means of the liquid-permeable top layer, nor does it solve the problem of internal leaks presented on the longitudinal edges of the core absorbent when it has been saturated and which are resolved with the present invention. EP-0,329,160 of Uni-Charm Corporation, published on August 23, 1989, discloses a disposable absorbent garment comprising a liquid-permeable upper sheet, an absorbent core, a liquid-impermeable back sheet, and placed on these sheets side flaps comprising a first sheet and a second sheet extending outward from the opposite lateral edges of the absorbent core, having a first elastic member incorporated within each of the side barriers adjacent to the lateral edge of the flap and a second elastic member within each of the lateral fins between the union of the first elastic member and the location adjacent the joined lateral edge of the core. The second elastic member is fixed only to the first sheet so that a portion of the first sheet occupied by the second elastic member protrudes and allows it to contract. In this patent, a double-layered barrier is disclosed in the lateral part of the diaper, where the lateral flaps are located outward from the lateral edges of the absorbent core and which are made of a porous material impermeable to the liquid, but the problem of giving a complete seal, avoiding internal leakage of liquids. Mexican patent number 174,128 discloses another type of barriers that are integral to the lateral fins of the absorbent article. In this type of barriers, the inner layer ends in one of the edges of the barrier (near shore) and the distant edge of the barrier has an elastic element to create a channel that prevents the passage of liquids that can float over the inner layer of the diaper, so that a type of external bers are formed that will be in contact with the skin of the user, delaying the passage of liquid or semi-liquid exudates through them. These bers have seal means that join the proximal edge of the ber to the inner part of the outer layer of the diaper and to the inner layer thereof, this joint or seal being placed adjacent to the elastics of the fins, between them and the longitudinal edges of the matrix. As in the previous cases, the bers retard but do not impede the passage of liquids; furthermore, as mentioned in the body thereof, liquids may leak and infiltrate beyond the joint or seal along the proximal edge, reaching the longitudinal edges of the absorbent article. On the other hand, it has been observed in practice that this type of external lateral barriers can hurt the user, since the elastic part thereof is directly in contact with the skin of the user. By the present invention, a definitive solution to the problems of runoff through the lateral edges of the absorbent core is achieved by placing two strips of a material preferably liquid impervious along the longitudinal edges thereof, at least in the crotch region, extending outwardly from the longitudinal edge of the absorbent core and ending inwardly of the longitudinal edge of the disposable absorbent article, between the inner and outer layers of the absorbent article and sealing these strips to the inner part of the outer layer thereof. at least in the crotch region, so that effective internal lateral barriers are formed along the longitudinal edges of the absorbent core at least in the crotch region through which definitely no exudate will pass to the longitudinal edges of the absorbent article.

Objectives of the Invention One objective of the invention is to provide a definitive solution to the problem of run-off through the longitudinal edges of a core of a disposable absorbent article. Yet another object of the invention is to create an internal barrier along the longitudinal edges of the core of the disposable absorbent article, at least in the crotch region, which avoids any leakage of liquid or semi-liquid exudates through it. . A further objective of the invention is that, because it is an internal barrier, it will not be in contact with the skin of the user, avoiding the risk of chafing or irritation by the barrier itself. Another objective of the invention is to create an integral anti-runoff system by working together the internal lateral barriers with the external lateral barriers. Another object of the invention is that the solution is feasible and easy to apply during the production of the disposable absorbent article. Brief Description of the Drawings Figure No. 1 shows a diaper with all its components, to which the internal side barriers of the present invention have been incorporated. Figure No. 2 is a section along the line A -A 'of Figure No. 1. Figure No. 3 shows another embodiment of the invention, in which the upper end of the internal side barriers is sealed on the inner side of the liquid-permeable layer. In Figure No. 4 another mode for the internal barriers of the present invention is illustrated. Figure No. 5 shows a diaper with both internal and external barriers. Figure No. 6 shows the outer layer, the absorbent core of straight shape and the internal barriers. Figure No. 7 shows the outer layer, the absorbent core anatomically and the internal barriers. Figure No. 8 illustrates another modality of internal barriers, in which the barriers only work in the crotch zone. Figure No. 9 illustrates a feminine sanitary napkin to which the internal barriers of the present invention have been incorporated. Figure No. 10 illustrates another embodiment of the invention, in which an arrangement of the internal side barriers is shown, with the anchor section adhered to the inner part of the liquid impervious layer, toward the center of the absorbent core, while the terminal barrier section is on the absorbent core, folded towards the center thereof. Figure No. 11 illustrates another embodiment of the invention, in which an arrangement of the lateral anti-runoff barriers is shown. In Figure No. 12, a further embodiment of the invention is illustrated, in which an arrangement of the lateral anti-runoff barriers with the anchoring section adhered on the inner part of the liquid impermeable layer and bent towards the center of the absorbent core, while the terminal barrier section is adhered to the inner part of the liquid permeable layer and also bent towards the center of the absorbent core. Detailed Description of the Invention The term "disposable absorbent article" refers to articles that absorb and contain exudates from the body and that are discarded after use. The present description will be made for a disposable baby diaper, it being understood that it can also be applied to other types of disposable absorbent articles, such as disposable diapers for incontinent adults and feminine sanitary napkins. Referring to Figure No. 1, there is shown a disposable diaper constituted by an internal layer (20) permeable to liquids, an outer layer (22) impervious to liquids, an absorbent core (24) placed between both internal layers and external, a pair of tabs of tapes (36) adhered to the inner and outer layers in the rear waist portion of the diaper and which together with the band or bands (38) that are in the front and on the outer layer, form the diaper fastening system; crotch elastics (40), one or more elastic waist members (42) and internal anti-runoff barriers (50). All diaper components are joined using conventional techniques, well known to those skilled in the art. For example, the components can be joined by means of thermal or ultrasonic joints; however, the most common method for joining them involves the use of pressure sensitive hot adhesives. The inner and outer layers have the same dimensions and are longer and wider than the absorbent core. The protruding part of the absorbent core forms the outline of the diaper (44) and the cut that is given to this contour will be the final shape of the diaper. In the figure a form of I is shown, but it can be given any other form, as is well known in the art. The two longitudinal edges (46) and the crotch part (48) of the diaper, as well as the longitudinal edges of the absorbent core (52) can also be seen in Figure No. 1. The liquid permeable inner layer (20) should be soft and not irritate the user's skin. There is a wide variety of films that serve this purpose; Generally, films composed of synthetic polymer filaments are used. This inner layer can be engraved and / or perforated so that the liquid penetrates quickly and does not return to the surface thereof; In a preferred embodiment, the liquid permeable inner layer is a non-woven fabric. The outer layer impermeable to liquids (22) must be flexible and thin to allow the movements of the user, and this layer must also be impermeable to liquids in order to stop the passage of any type of exudate. A low density polyethylene film is usually used as the outer layer of the diaper; this film should have, in a preferred embodiment, a maximum caliper of 3 mils and a maximum weight of 30 g / m2, in order that the user can move easily and at the same time decrease the noise of the material caused by the movement. On the other hand, it is desirable that the cover or outer layer (22) have the appearance of fabric, in order to increase comfort for the user and eliminate the risk that any plastic material is in contact with the skin and occasion ne irritation; for this reason, non-woven fabric films of different characteristics, laminated with low density polyethylene, have been used. In this way, the double purpose of the film being waterproof and on the other hand having the appearance of desirable fabric by consumers, which associate it with a diaper more comfortable for the user and of better quality is achieved. On the other hand, another desirable feature for the outer layer is that it is impermeable to liquids but permeable to vapor, that is capable of breathing. For this purpose a microporous polyethylene film or a laminate of this microporous polyethylene film with non-woven fabric can be used. The absorbent core (24) can be manufactured in a wide variety of shapes and sizes, among which the rectangular, I-shaped, anatomical, etc. forms stand out. Generally, it consists of defibrated cellulose that can be mixed with synthetic fibers, but it can also include superabsorbent material mixed with the rest of the fibers or positioned in specific areas in order to improve the absorption, distribution and retention of liquids within the absorbent core. The absorbent core may be composed of one or more layers and the specific densities and weights of the various layers within it may be varied so as to achieve optimum performance. The absorbent core (24) can also include one or several layers of paper that help to better distribute the liquids and maintain their integrity. The diaper may carry one or more elastic strands (40) which are attached to the diaper along the entire crotch portion (48) on both sides of the diaper. Such elastic threads (40) serve to compress the crotch portions and fit the user's legs when the diaper is in use to form a seal between the diaper and the legs. The diaper may also include one or more elastic waist members (42), in order to compress the waist parts of the same and that these conform to the waist of the user, thus preventing exudates from leaving this part of the diaper. It is important that these elastic systems, both crotch and waist, are designed in such a way that adjust the diaper towards the user without hurting or irritating the skin thereof. The system by means of which the diaper is to be fastened on the wearer is formed by a pair of positioning tapes (36) which are on the back waist part of the diaper attached to the inner and outer layers and one or more strips of anchoring (38) placed on the front waist portion by the outer part of the outer layer of the diaper. In the fastening system, the positioning tapes (36) can be adhesive tapes or any type of tapes that are used for this purpose; as well as the anchoring strips (38) can be plastic strips or any other type of strips where the positioning strips can be anchored, such as hook and loop systems, snaps, etc. As mentioned, in a diaper with the described characteristics there may be risk of run-off on the side edges of the diaper (46), since liquid or semi-liquid exudates are transported through the inner layer and can pass through the elastomers of the diaphragm. leg (40) coming to the clothes that are in contact with the diaper. Even when it has external anti-runoff side barriers (60), as shown in Figure No. 5, liquids may pass under the barrier to the longitudinal edges of the diaper (46). For this reason, a completely effective anti-drip system has been developed, consisting of placing two internal anti-drip barriers (50), preferably impermeable along the lateral edges of the absorbent core (52) between the inner layer and the outer layer of the diaper, at least in the crotch region; these barriers (50) are constituted, in a presently preferred embodiment, by three sections, an anchoring section (62), a terminal barrier section (64) and a barrier section (66), the anchoring section, as shown in Figure No. 2, which is a cut through line AA 'of Figure No. 1, being attached to the inner part of the impermeable outer layer of the diaper at least in the crotch region. . This attachment is preferably made with adhesive (54), but can be made by any other joining member known in the industry, such as heat sealing, ultrasonic bonding or any other known method. This anchoring section (62) has a minimum width of 0.2 mm in its narrowest part, since if the absorbent core is straight, the width of the anchoring section is constant along the same, as can be seen in Figure No. 6; On the other hand, if it is an absorbent core with anatomical shape, the anchoring section (62) of the internal anti-drip barriers is wider in the crotch and narrower in the ear sections of the absorbent core, as can be seen in Figure No. 7. The barrier section (66) covers the side portions of the absorbent core (52) at least in the crotch section (48), so that it stops the passage of any type of fluid out of it. In a preferred embodiment, the barrier section (66) covers the entire side portions of the absorbent core (52), regardless of the shape thereof, as shown in Figure No. 7. The barrier section of each of the internal leakage barriers (50) must cover at least the entire thickness of the absorbent core, ie the barrier section must have a minimum width equal to the thickness of the absorbent core, preferably the end section of the absorbent core. barrier (64) of each of the internal barriers terminates above the absorbent core, covering up to about 2 cm of the upper part thereof, measured from each of the lateral edges of the absorbent core (52) in the section Crotch In this way, the liquid or semi-liquid exudates that want to leave the edges of the absorbent core towards the longitudinal edges of the diaper will be permanently stopped, forcing them to take other paths and in this way to take advantage of the total capacity of absorption and retention of the absorbent core and not only in the crotch part thereof, as usually occurs during use. In this order of ideas, the present invention contributes to a large extent to make the absorbent core more efficient in a simple and effective way, which contrasts with the complicated designs of absorbent core that have been developed precisely for this purpose. On the other hand, like the anchoring section (62), the barrier section (66) has a constant width when the absorbent core is straight, as can be seen in Figure No. 6; if the absorbent core is not straight, the width of the barrier section varies along the core, as shown in Figure No. 7. The anchoring section (62) of each of the internal leakage barriers (50), in the case of an absorbent core with straight side edges, it has a minimum width of about 0.2 mm along the entire length of the core; in the case of an anatomically shaped core, the anchoring section (62) of each of the internal leakage barriers (50) has a minimum width of about 0.2 mm in the widest part of the absorbent core. The material of the lateral anti-runoff barriers 50 is preferably impermeable, although they can also be made of a hydrophobic material, a microporous material, a microperforated material, any type of lamination of a permeable material with a waterproof , of a permeable material with a hydrophobe or of a permeable material with a microporous. In a presently preferred embodiment, the material of the internal anti-runoff side barriers (50) is a low density polyethylene with a maximum weight of 40 g / m2. In one embodiment of the present invention shown in Figure No. 3, the barrier end section (64) of each of the internal leakage barriers (50) is attached to the inner part of the permeable inner layer of the diaper so that the terminal part of the barriers separates from the upper part of the absorbent core (62) and can more effectively stop the liquids arriving at the barrier. Another embodiment of the internal leakage barriers of the present invention is shown in Figure No. 4. As can be seen, an elastic element (58) has been placed in the terminal part of each of the barriers in order to Separate them from the upper part of the absorbent core (24) and thus make their barrier function more effectively by containing the exudates that float on the upper part of the absorbent core. In Figure No. 5 a section is shown along line A-A 'of Figure No. 1 of a diaper with external anti-runoff side barriers (60). This method ensures completely that liquid or semi-liquid exudates will never reach the longitudinal edges of the diaper, soiling clothes that are in contact with it., since the exudates that pass to the absorbent core and want to escape through the longitudinal edges thereof are contained by the lateral anti-runoff barriers (50) and the exudates that are not absorbed quickly and float on the permeable inner layer (20) of the diaper are contained by the external anti-runoff barriers (60), which each have to open them at their distant edge with an elastic separation element (68), which is wrapped by the terminal part of the barrier that is attached on the barrier itself by means of an adhesive (70), ensuring between the internal and external barriers a complete containment of liquid or semi-liquid exudates. In a preferred embodiment of the invention, the anchoring section (62) of the internal anti-runoff side barriers (50) is attached to the inner part of the liquid impervious layer, by means of an adhesive (54), leaving the absorbent core surrounded by impermeable material, except for the upper liquid receiving area. The end barrier section (64) should be on the absorbent core towards the central area thereof, within a range of about 0.5 cm to about 2 cm, measured from each of the longitudinal side ends of the absorbent core , at least in the crotch area and preferably all along the longitudinal length of the absorbent core, while the anchoring section (62) of the lateral anti-runoff barriers (50) will have a fixing or sealing width of at least about 0.2 mm. As a variation of the above-described embodiment, the same diaper barrier (60), placed on the permeable inner layer (20), at the height of the barrier end section (64) of the side barriers can also include the same diaper. anti-runoff (50), obtaining a complete seal both on the longitudinal side ends of the liquid permeable layer (20) and on the longitudinal side ends of the absorbent core placed between the permeable and liquid impermeable layers, eliminating run-off caused by leaks of liquids through the fluid-permeable layer. In another preferred embodiment of the invention, the disposable absorbent article has lateral anti-draining side barriers (50), placed on the longitudinal side ends of the absorbent core (20), where the flange of the anchoring section (62) of each of the anti-runoff side barriers (50) is adhered by means of an adhesive (54), bent towards the absorbent core on the inner side of the liquid impervious layer, while the barrier end section (64) of each of the lateral anti-run-off side barriers (50) is mounted on the absorbent core, as shown in Figure No. 10. In another embodiment of the present invention, which is shown in Figure No. 11 , there is a disposable absorbent article with lateral anti-runoff barriers (50), placed on the longitudinal side ends of the absorbent core (24), where the flange of the section of a nclaje (62) of each of the barriers is adhered by means of an adhesive (54), bent out of the absorbent core on the inner side of the impermeable layer (22) to the liquids, while the barrier end section ( 64) of each of the lateral anti-runoff barriers (50) is adhered by means of an adhesive (56), bent out of the absorbent core on the inner side of the permeable layer (20) to the liquids. In another embodiment of the present invention, which is shown in Figure No. 12, there is a disposable absorbent article with lateral barriers against internal draining. (50), placed on the longitudinal ends of the absorbent core (24), where the flange of the anchoring section (62) of each of the barriers is adhered by means of an adhesive (54), bent inwards of the absorbent core on the inner side of the impermeable layer (22) to the liquids, while the end barrier section (64) of each of the internal anti-spill side barriers (50) is adhered by means of an adhesive (56). ), bent inwardly of the absorbent core on the inner side of the permeable layer (20) to the liquids. Another embodiment of the present invention is shown in Figure No. 8, where it can be seen that the lateral anti-runoff barriers (50) work only in the crotch section of the absorbent core (24), since in the wider parts of the core the material of the barriers remains on it. Finally, the present invention can also be applied to another type of disposable absorbent articles, such as feminine sanitary napkins, as shown in Figure No. 9, in which a feminine sanitary napkin to which it has been incorporated is appreciated. the internal anti-runoff barriers (50) of the present invention. In this type of articles, the modalities shown in figures 2, 3, 4, 5, 10, 11, and 12 can also be applied. Although the invention has been described according to the embodiments thereof, they are currently preferred. , it is clear that those skilled in the art will be able to devise changes or modifications, it being intended that such changes or modifications be included within the scope and spirit of the invention, as defined in the following claims.

Claims (28)

1. CLAIMS 1. A disposable absorbent article, consisting of a permeable inner layer, an impermeable outer layer, an absorbent core placed between both layers, elastics in the lateral fins, elastic waist bands and fastening system, characterized in that it has two lateral barriers anti-internal drains placed between the inner layer and the outer layer of the diaper, which are anchored adjacent to the longitudinal edges of the absorbent core, covering said longitudinal edges of the absorbent core and thus avoiding any type of leakage through and beyond them .
2. 2. A disposable absorbent article, according to claim 1, characterized in that the lateral anti-runoff barriers are arranged at least in the crotch area.
3. 3. A disposable absorbent article, according to claim 1, characterized in that the internal anti-runoff side barriers have an anchoring section that is attached to the inner part of the liquid impervious layer, a barrier section that covers the minus the longitudinal side edges of the absorbent core and a terminal barrier section mounted on the absorbent core.
4. 4. A disposable absorbent article, according to any of the preceding claims, characterized in that the end part of the barrier section of each of the lateral anti-runoff barriers is attached to the inner part of the liquid-permeable layer. .
5. 5. A disposable absorbent article, according to claims 2 and 3, characterized in that the anchoring section has a width of at least about 0.2 mm in the crotch region of the absorbent article.
6. 6. A disposable absorbent article according to claim 3, characterized in that the anchoring section has a width of at least about 0.2 mm in the widest part of the absorbent core.
7. 7. A disposable absorbent article, according to claim 3, characterized in that the barrier section of each of the internal anti-runoff side barriers has a minimum width equal to the thickness of the absorbent core.
8. 8. A disposable absorbent article, according to claim 3, characterized in that the end part of the barrier section of each of the internal antisurface side barriers is disposed on the upper part of the absorbent core, covering a maximum width of about 2 cm of it, measured from the longitudinal edge of the absorbent core and towards the longitudinal center thereof in the crotch region.
9. 9. A disposable absorbent article, according to claims 1 to 4 and 7 to 8, characterized in that the end part of the barrier section of each of the lateral anti-runoff barriers has an elastic element that separates it from the barrier. upper part of the absorbent core.
10. 10. A disposable absorbent article, according to claim 1, 3 and 8, characterized in that the flange of the anchoring section of each of the barriers is adhered folded towards the absorbent core on the internal part of the layer impermeable to the liquids, while the terminal section of the barrier section of each of the barriers is mounted on the absorbent core.
11. 11. A disposable absorbent article, according to claim 1, 3 and 4, characterized in that the flange of the anchoring section of each of the barriers is adhered bent out of the absorbent core on the inner part of the impermeable layer the liquids, while the terminal barrier section of each of the internal anti-curing side barriers is adhered folded out of the absorbent core on the inner part of the liquid permeable layer.
12. 12. A disposable absorbent article, according to claim 1, 3 and 4, characterized in that the flange of the anchoring section of each of the barriers is adhered folded towards the absorbent core on the inner part of the liquid impervious layer, while the terminal section of the barrier section of each of the barriers is adhered bent towards the absorbent core on the inner part of the liquid-permeable layer.
13. 13. A disposable absorbent article, according to any of the preceding claims, characterized in that the material of the internal side barriers is impermeable to the liquid.
14. 14. A disposable absorbent article according to any of claims 1 to 12, characterized in that the material of the internal anti-runoff side barriers is hydrophobic.
15. 15. A disposable absorbent article according to any of claims 1 to 12, characterized in that the lateral anti-runoff barriers are made of a non-woven fabric with a hydrophobic treatment.
16. 16. A disposable absorbent article, according to any of claims 1 to 12, characterized in that the material of the internal side barriers is microporous.
17. 17. A disposable absorbent article according to any of claims 1 to 12, characterized in that the internal anti-wringing side barriers are made of a microporous nonwoven fabric.
18. 18. A disposable absorbent article according to any of claims 1 to 12, characterized in that the material of the internal side barriers is a laminate of a waterproof material with a permeable one.
19. 19. A disposable absorbent article according to any of claims 1 to 12, characterized in that the material of the internal side barriers is a laminate of a hydrophobic material with a permeable one.
20. 20. A disposable absorbent article according to any of claims 1 to 12, characterized in that the material of the internal side barriers is a laminate of a permeable material with a microporous one.
21. 21. A disposable absorbent article according to any of claims 1 to 12, characterized in that the impermeable material of the internal barriers is a polyethylene.
22. 22. A disposable absorbent article according to any of claims 1 to 12, characterized in that the permeable material of the lateral anti-runoff side barriers is preferably a nonwoven.
23. 23. A disposable absorbent article, according to the previous claims, characterized in that it also has two lateral anti-runoff barriers that together with the internal anti-drip barriers placed between the inner layer and the outer layer of the diaper covering the edges The longitudinal absorbent core forms an integral system that prevents any leakage of liquid or solid exudates from the disposable diaper.
24. 24. A disposable absorbent article, according to claims 1 and 23, characterized in that the lateral anti-runoff barriers placed on the longitudinal side ends of the absorbent core between the permeable and liquid impervious layers, together with the side barriers anti-external runoff placed on the liquid permeable layer above the sealing area of the terminal section of the internal barriers, eliminating any type of leakage.
25. 25. A disposable absorbent article, according to claims 1 to 7 and 9 to 22, characterized in that the lateral anti-draining side barriers are arranged in a female sanitary napkin.
26. 26. A disposable absorbent article, according to claims 1, 8, 23 and 24, characterized in that the lateral anti-runoff barriers are placed in conjunction with an absorbent core in a non-straight manner.
27. 27. A disposable absorbent article, according to claims 1, 8, 23 and 24, characterized in that the lateral anti-runoff barriers are placed in conjunction with an absorbent core anatomically.
28. 28. A disposable absorbent article, according to claims 1, 8, 23 and 24, characterized in that the lateral anti-runoff barriers are placed in conjunction with an absorbent core in the form of an I.