MXPA98010294A - Absorbent article disposable anti-rosadu - Google Patents

Abstract

A disposable absorbent article, such as a disposable baby diaper, a disposable diaper for incontinent adults, a trainer brief or a sanitary napkin, characterized in that an anti-chafing composition that does not cover the pores is incorporated in one or several components of the article. of the materials from which the disposable absorbent article is made, said composition comprising ingredients selected from the group consisting of aromatic alcohols and their non-phenolic derivatives, salts of citric acid and its derivatives, derivatives, alcohol derivatives of higher fatty acids, and triglyceride acid esters and their derivatives, to avoid chafing in users

Description

'ABSORBENT ARTICLE DISPOSABLE ANTI-RUBBINGS BACKGROUND OF THE INVENTION E - & n, X la? Extensive, dynamic and innovative industry of disposable absorbent articles, it has been possible to solve an infinite number of problems to obtain better results as regards the containment of the liquid, solid and semi-solid waste emitted by the users Some of them have been focused around the absorbent core, others to the external lateral barriers, others to the crotch springs, etc. However, few have focused on solving the problem that represents the prolonged contact of users with their waste, causing the skin to suffer chafing. Chafing is one of the most important and common problems that occur when using disposable diapers. The skin of the user of this type of articles. usually it always ends up getting irritated, among other reasons for the following: - The low degree of softness of the inner layer. • ^ '* "- r_The presence of substances or compounds with certain "*» Degree of acidity or alkalinity (eg, ammonia "" "* * produced by urea from urine and / or feces). -. > -L-a p.Vie "-l" remains moist and without perspiration for long periods of time. - "" 'The presence of microorganisms that cause irritation- "? H * -»' 'X * > jjl..1 c cíon *. - Allergies to the chemical compounds that form the super - absorbent gel used in the core of disposable diapers. - The sensitivity of the "skin." - The return of liquids to the surface of the inner layer Some efforts have been made to reduce and / or delay chafing during the use of disposable diapers, of which the following stand out: US Patent Nos. 5,525,364 and 5,436,007, by Abbott Laboratories, describe the use of a lotion that impregnates a porous film, which is used as an inner layer of disposable diapers.The main feature of this lotion is its buffering action of pH, It neutralizes t-i acid or alkaline substances and thus delays the appearance of chafing during the use of disposable diapers.The aforementioned lotion is based on a linear polymer of polydimethylsiloxane, a non-ionic emulsifier, and in addition It contains emollients such as aloe vera to protect and lubricate the skin.The lotion has a pH of around 5.2 and a viscosity in the range of 10 to ^ 0.000 centipoise. WO 97/38735 from Enviroderm Pharmaceuticals, Inc. discloses a method of preventing skin irritation caused by fecal enzymes, which comprises incorporating into the diaper an organophilic clay that makes contact with the skin in sensitive areas, said clay organophil supposedly effective in inactivating faecal proteolytic enzymes. WO 92/09289 of Biolab Pharmaceuticals, Inc. discloses a method of treating chafing by coating the affected area with a composition containing a copolymer of a lower alkyl vinyl ether and maleic acid, or a derivative of said copolymer. WO 81/01643, by Molecular Sieve Systems, Inc., discloses an ion exchange material that is used in diapers to exchange ammonium ions from urine, as well as incorporation into diapers of materials that remove bacteria and toxic proteins from the body exudates. In particular, various zeolites are described as ion exchange material. WO 96/16682, from The Procter & Gamble Company, describes a diaper that contains a liquid permeable inner sheet or layer coated with a lotion composition. It is said that the lotion composition reduces the adhesion of the exudates to the user's skin, thereby improving the ease of cleaning of such exudates. The lotion composition comprises a plastic or fluid emollient such as mineral oil or petrolatum, an immobilizing agent such as a fatty alcohol or paraffin wax, to immobilize the emollient on the surface of the sheet or inner layer of the diaper; and optionally a hydrophilic surfactant to improve the wettability of the coated inner sheet or layer. It is said that because the emollient is immobilized in the manner indicated, less lotion is required to impart the desired therapeutic or protective benefits. WO 97/05909, from The Procter & Gamble Company, describes a diaper similar to that of the publication WO 96/16682, in which the lotion composition comprises a liquid polyester polyol and an immobilizing agent such as a fatty alcohol or paraffin wax, with supposed benefits similar to those of the publication WO 96/16682. U.S. Patent No. 4,996,238, to Neutrogena Corporation, discloses a method of treating scuffing caused by diapers by the use of a composition exhibiting water repellency and conditioning effects, and including aliphatic waxes and hydrophobic silicones in a non-allergenic carrier, non-toxic, cosmetically acceptable. US Patent No. 5,192,277, to Lucky Ltd., discloses a disposable diaper comprising a flavonoid and a ceramic material that radiates in the far infrared portion of the spectrum, which supposedly has bacterial inhibition and deodorizing characteristics. The flavonoid and the ceramic material are incorporated in the sheet or inner layer of the diaper, in the absorbent core, and / or in the backing sheet.

U.S. Patent No. 5,091,193, Roussel Uclaf, discloses a composition for preventing or treating chafing caused by the use of diapers, comprising an effective amount of zinc oxide, phytic acid, an additional, optional anti-enzymatic agent, and an inert pharmaceutical carrier. U.S. Patent No. 5,137,525, by Jacob Glassman, discloses a scratch-resistant diaper, ripping of the diaper by operating to allow hot air to escape from the absorbent core, and the absorbent material to dry and cool, to prevent chafing. . EP 0202126 Al, by The Procter & Gamble Company, describes disposable absorbent articles that have a sheet or inner layer with ion exchange properties, and that particularly release protons when exposed to body exudates, which results in reducing the pH of the skin and thus reduce the possibility of chafing EP 0311344 Al, from The Procter & Gamble Company, refers to disposable absorbent articles that contain both an acid-deadening agent and a non-volatile, non-toxic, non-irritating anti-microbial agent. The acid buffering agent is also preferably a gelation agent with superabsorbent characteristics. It is said that such absorbent articles are adapted to maintain the pH of the body exudates discharged to the article at a value less than about 7.5, in order to prevent or reduce chafing and control the odors caused by the production of ammonia. EP 0117613 Al, from The Procter & Gamble Company, describes methods for the treatment and prevention of chafing and dermatitis, as well as disposable absorbent articles that employ the topical application of a minimum inhibitory concentration of a lipase inhibiting agent, such as ZnCl 2, which is applied with a vehicle similar to barrier. It is clear from the brief review above of relevant documents of the patent literature, that a definitive solution to the problem of chafing caused by the use of diapers has not yet been found, and particularly by the contact of body exudates with the skin of the user. The approaches that have been used to address the problem are varied, and are generally based on the development of compositions that are applied to the user's skin, and in more limited cases, the incorporation of said compositions into one or more components of the diaper. . However, while there are many and very diverse compositions on the market to treat chafing, disposable absorbent articles that are effective in preventing and / or treating chafing do not yet exist therein. The foregoing is due, among other reasons, to the fact that it has been difficult and unsuccessful to incorporate anti-chafing agents into the components of the disposable absorbent articles, and particularly into the sheet, or inner layer, or higher thereof. In fact, there are documented efforts to incorporate anti-chafing compositions into disposable absorbent articles that, when applied topically, are effective, but are totally inefficient, and in some cases harmful, when they are incorporated into the upper or inner sheet or layer. of a diaper. Therefore, the present invention was raised to develop an effective composition to prevent and / or treat chafing caused by exudates discharged by the user of a disposable diaper, which additionally has the ability to be incorporated into one or more components of a diaper disposable to be able to perform its function during its use. Furthermore, the present invention also proposes the development of a disposable absorbent article with the intrinsic ability to prevent and / or treat chafing. Finally, the present invention proposes the development of a method that allows incorporating efficiently, and without \ \ loss of properties and characteristics, a non-scratch composition in a disposable absorbent article. In this order of ideas, the anti-chafing composition of the present invention comprises pH buffers and emollients to protect the skin, a bacteriostatic agent that temporarily stops microbiological growth, preventing the putrefaction of organic matter and the bad ones. odors generated by the conversion of urea into ammonia, as well as a hypoallergenic agent that prevents irritation due to allergies. In the same way, the composition of the present invention includes a fabric softener that functions to align the fibers of the materials from which the components of the disposable absorbent article are made, particularly the materials of the top or inner sheet. The emollients used in the composition according to the present invention, particularly triglyceride acid esters and their derivatives, allow the transpiration of the skin, which does not happen when using as emollients compounds such as silicone or petrolatum, identified in the literature of patents commented above, that while protecting the skin, create a layer that blocks the escape of water vapor (sweat) and carbon dioxide, as they block the pores of the user avoiding the passage of water vapor fluids. Additionally, emollients of the state of the art also have the disadvantage of blocking non-woven fabrics used in the manufacture of disposable absorbent articles. The anti-chafing composition of the present invention imparts to the diaper extremely desirable characteristics, never before present in commercial products, such as softness, protection against allergies, bacteriostatic protection, damping of alkalinity and acidity, and also protection of the skin with an emollient that It does not drain, it does not cover the pores of the user and it is not greasy. Because of this, the anti-chafing composition of the present invention is fully and distinctly distinguished from those documented in the patent literature and those in commercial use today. On the other hand, the anti-chafing composition of the present invention is designed to not only solve the problem of chafing caused by the discharge of body exudates by the user of a disposable absorbent article, but also to be able to be incorporated without loss of functions , qualities and characteristics, in one or more components of a disposable absorbent article, particularly the upper or inner layer or sheet thereof. The incorporation of the anti-chaffing composition of the present invention into one or several components of a disposable absorbent article is achieved thanks to a method that allows to impart to the component or components of a disposable absorbent article the characteristics and desirable properties of the anti-abrasion composition. rubs of the present invention. OBJECTIVES OF THE INVENTION One objective of the invention is to prevent, delay and reduce the problem of chafing presented on the skin of users of disposable absorbent articles, by incorporating an anti-aging composition in the inner layer or other component thereof. chafing as defined in the present invention. Another object of the invention is to soften the top layer of a disposable absorbent article with the composition of the present invention by aligning the textile fibers. Another objective of the invention is to neutralize the ammonia generated from urea, which is the main component of urine, the main cause of chafing and bad odor. A further objective of the invention is to inhibit microbiological growth, thereby avoiding the putrefaction of organic matter and the bad odors generated by it. Another objective of the invention is to stop the growth of bacteria, such as but not exclusively Brevibacterium ammoniagenes, which is the microorganism mainly involved in the reaction that transforms urea into ammonia. Another object of the invention is to prevent allergies, inhibiting the formation of antigens by the composition of the present invention, which comprises alcoholic derivatives of higher fatty acids, among other active agents. Another objective of the invention is to protect the wearer's skin from disposable absorbent articles, with an emollient or intracellular lubricant that softens the skin, allowing its perspiration. A further object of the invention is to apply the composition of the present invention so that it adheres to the upper layer without draining or being greasy. Yet another objective of the invention is that with the application of the composition of the present invention the fibers of the inner layer are softened to avoid roughness. Yet another objective of the invention is that with the application of the composition of the present invention the skin cells of the user are lubricated providing a barrier against the irritating agents while allowing the respiration of the same giving rise to that water vapor (sweat) and carbon dioxide can pass freely. Another object of the invention is that the composition applied on the disposable absorbent article contains an emollient that does not drain or block the pores of the user. BRIEF DESCRIPTION OF THE DRAWINGS Figure No. 1 shows a disposable diaper with all its components, in which it can be seen clearly how the inner layer is the one that will be in contact with the skin of the wearer during its use. Detailed Description of the Invention As is well known, disposable absorbent articles have become an indispensable part in the daily life of any family. Therefore, the industry of disposable absorbent articles has developed considerably based on an infinity of proposals tending to constantly improve said articles. However, despite considerable efforts in research and development, some problems continue to arise in the disposable absorbent articles, which it has not been possible to correct in its entirety. Among these problems, the chafing (irritation) of the user's skin, due to the prolonged contact with the body exudates retained by the disposable absorbent articles, stands out. The main function of the disposable absorbent articles, such as disposable diapers for babies, disposable diapers for incontinent adults and training pants, is to absorb and retain the body exudates of the users. The present description will be made according to a disposable baby diaper, it being understood that it can be applied to any type of disposable absorbent article. A disposable diaper, such as that shown in Figure No. 1, is composed of an outer layer (22) impervious to liquids, an inner layer (20) permeable to liquids which is the one directly in contact with the liquid. the wearer's skin, an absorbent core (24) that lies between both layers, which are usually cotermines and are sealed in their peripheral contour around the absorbent core; in addition, the diaper has two elastic bands (26) located at the ends that are in the longitudinal center for adjusting the user's waist at the time of use; two tape tabs (28) placed on the back adhered to the inner and outer layers near the corners of the diaper and one or more bands of tape (30) on the waterproof layer on the front, the above elements forming a system of fastening to place the diaper on the wearer; one or more elastic strands (32) 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 can further have two external lateral barriers (34) placed on the inner layer thereof along the length of the diaper placed adjacent to the longitudinal edges of the absorbent material at least in the crotch region and two internal anti-seizure barriers (36) placed between the inner and outer layers along the diaper adjacent to the longitudinal edges of the absorbent core, at least in the crotch region. The inner layer (20) permeable to liquids 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 filaments of synthetic polymers are used. This inner layer can be engraved and / or perforated so that the liquid penetrates quickly and does not return to the surface of the same; In a preferred embodiment, the inner layer is a non-woven fabric. The characteristics of this inner layer are of great importance to reduce or delay the irritation in the user's skin (chafing) since it is the one that will directly be in contact with the skin during use. In the present invention, the inner layer of the disposable absorbent article is treated with an anti-chafing composition developed specifically for this purpose so as to impart to the layer characteristics of softness, which retards and considerably reduces the appearance of chafing on the skin, avoiding the blocking of the pores of the user. The above is achieved by using a composition that is preferably sprayed on the inner layer of the disposable diaper, thereby obtaining neutralization of the ammonia generated from the urea, the main component of urine, which is the main cause of chafing, as well how to stop the microbiological growth, avoiding with it the putrefaction of the organic matter and the bad odors generated by it. This composition is formed of aromatic alcohols and their non-phenolic derivatives, salts and their derivatives of citric acid, triglyceride acid esters and their derivatives and alcoholic derivatives of higher fatty acids, components that make up a composition that protects the user from their urine by means of the neutralization of ammonia by the salts and their citric acid derivatives; This ammonia, which is irritating, toxic and produces a bad smell, is formed by the bacterium Brevibacterium aminiagenes that feeds on urea and produces ammonia; aromatic alcohols and their non-phenolic derivatives act as bacteriostatic agents that stop the action of this type of micro-organisms, as well as pyrogenic microorganisms such as Candida albicans, causing extreme discomfort and putrefaction of organic matter that generates bad odors. The composition also contains emollients such as triglyceride acid esters and their derivatives, which lubricate the skin cells, providing a barrier against the irritants, while allowing respiration thereof, resulting in the vapor of water (sweat) and carbon dioxide can pass freely; Due to its low surface tension and its chemical structure, this compound spreads easily in a pure and adherent film (not greasy) that imparts a smooth and even touch to the skin. The esters of triglyceride acids and their derivatives also soften textile fibers, aligning them and removing the roughness of the upper layer of the diaper. Finally, the alcoholic derivatives of higher fatty acids contained in the composition inhibit the formation of antigens that induce allergies. This composition can be applied to the upper layer during the manufacturing process thereof or during the production of the disposable diapers. If applied during the manufacture of the top layer, the composition is sprayed onto the film at the end of the manufacturing process, ie once the film is formed, and before the film winding process. The recommended application for the composition to work properly can vary from 0.5 to 1.5 g / m2. If the composition is applied during the production of disposable diapers, it is sprayed on the top layer no matter at what stage of the process it is applied; it can be applied when the film is unwound or once it has been joined to the rest of the materials of the disposable diaper. The recommended diaper application can vary in the range of 0.08 to 0.25 g per diaper. In a preferred embodiment, the anti-chafing composition will be applied to the inner layer of the article. In another embodiment, the anti-chaffing composition may be applied on the absorbent core of the article. In yet another embodiment, the anti-chafing composition may be applied over the external lateral anti-drip barriers of the article. In a further embodiment, the anti-chafing composition may be applied on the inner layer, on the absorbent core and on the external lateral anti-wringing barriers of the article. In another additional embodiment, the anti-chaffing composition may be applied to the entire article. Usually and for commercial purposes, a certain amount of perfume is added to the disposable diapers to impart a pleasant aroma that the buyer likes, as well as to hide as much as possible the bad odors of the urine or feces during the use thereof. This perfume is generally sprayed either on the absorbent core or on the inner layer of the diaper during the manufacture thereof. A further advantage of the anti-chaffing composition of the present invention is that the perfumes generally used for diapers are soluble therein, i.e., the perfume can be added to the anti-chafing composition and applied simultaneously to the diaper. or in the inner layer, without affecting neither the characteristics of the anti-chaff composition nor those of the perfume. However, regardless of the perfume, the anti-chaffing composition of the present invention makes it possible to avoid the use of a perfume, since it provides the disposable absorbent article with features that combat odors, as described above. In the preferred embodiment, the anti-chafing composition is applied on the inner layer of the diaper; however, there are other application possibilities, for example on the absorbent core, on the external anti-runoff barriers or on the diaper itself once it has been completely formed, that is, once it has all its components; in this case, when spraying the anti-chafing composition on the diaper, this will be impregnated on the inner layer and on the external lateral barriers (34) that will also be, in use, in contact with the user's skin. A further alternative is to spray the anti-chaffing composition once the inner layer has been attached to the absorbent core, but before placing the external side barriers. The application of the anti-chaffing composition is by means of a spraying on one or several components of the disposable absorbent article. It should be emphasized in particular that the possibility of incorporating the anti-chafing composition of the present invention into disposable absorbent articles by spraying thereof is a very important aspect, since if they were to spray the anti-chaffing compositions of the state of the technique to the raw materials or to the components of the disposable absorbent articles, it would result in the pores of the non-woven fabrics used in said articles being covered, by virtue of the known ingredients of said compositions of the state of the art, which in practice has been translated, even before the development of the present invention, into the null efficiency of disposable absorbent articles treated with anti-chaffing compositions of the state of the art. Although the invention has been described according to the embodiments of the invention that 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 fall within the scope and scope of the invention. spirit of the invention, as defined in the following claims.

Claims (24)

1. CLAIMS 1. A disposable absorbent article, such as a disposable baby diaper, a disposable diaper for incontinent adults, a trainer pant or a sanitary towel, characterized in that one or several components of the article is incorporated in a non-scratch composition that does not covers the pores of the materials from which the disposable absorbent article is made, said composition comprising ingredients selected from the group consisting of aromatic alcohols and their non-phenolic derivatives; salts of citric acid and its derivatives; alcoholic derivatives of higher fatty acids, and triglyceride acid esters and their derivatives, to avoid chafing in users.
2. 2. A disposable absorbent article as claimed in claim 1, characterized in that the anti-chafing composition is applied on the inner layer of the article.
3. 3. A disposable absorbent article as claimed in claim 1, characterized in that the anti-chafing composition is applied on the absorbent core of the article.
4. 4. A disposable absorbent article as claimed in claim 1, characterized in that the anti-chafing composition is applied on the external lateral anti-wrinkle barriers of the article.
5. 5. A disposable absorbent article as claimed in claim 1, characterized in that the anti-chafing composition is applied on the inner layer, on the absorbent core and on the external lateral anti-wringing barriers of the article.
6. 6. A disposable absorbent article as claimed in claim 1, characterized in that the anti-chafing composition is applied to the entire article.
7. 7. A disposable absorbent article, as claimed in claim 1, characterized in that the anti-chafing composition is applied to the inner layer thereof during the manufacture of the disposable absorbent article, before it is attached to the absorbent core.
8. 8. A disposable absorbent article, as claimed in claim 1, characterized in that the anti-chafing composition is applied on the inner layer thereof during the manufacture of the disposable absorbent article, once it has been attached to the absorbent core. and before the external lateral barriers are attached to the inner layer.
9. 9. A disposable absorbent article, as claimed in claim 1, characterized in that the anti-chafing composition is applied on the internal surface thereof during the period of time. manufacture of the disposable absorbent article, once the inner layer has been attached to the absorbent core and the external lateral barriers have been attached to the inner layer. .
10. 10. A disposable absorbent article, as claimed in any of the preceding claims, characterized in that the anti-chafing composition is incorporated in the article in an amount ranging in the range of 0.08 to 0.25 g per diaper.
11. 11. A disposable absorbent article, as claimed in claim 1, characterized in that the anti-chafing composition is applied to the internal layer thereof during the manufacturing process thereof, once it has been formed and before wind it.
12. 12. A disposable absorbent article, as claimed in claim 2, characterized in that the anti-chafing composition is applied in an amount that varies between

    0. 5 and 1.5 g / m2.
13. 13. A disposable absorbent article, as claimed in any of the preceding claims, characterized in that it optionally comprises a fragrance incorporated in the anti-chafing composition in a compatible manner.
14. 14. A disposable absorbent article, as claimed in claims 2, 3, 4, 5, 6, 7, 8, 9 and 11, characterized in that the anti-chafing composition has inhibitory action of pyrogenic microorganisms such as Candida albicans and Brevibacterium ammoniagenes.
15. 15. A disposable absorbent article, as claimed in claims 2, 3, 4, 5, 6 ~, 7, 8, 9, 11 and 14, characterized in that the anti-chafing composition applied on one or several components of the article does not cover the pores of the user , does not run off and is easily incorporated into the components of the disposable absorbent article.
16. 16. A disposable absorbent article, as claimed in claims 2, 3, 4, 5, 6, 7, 8, 9, 11, 14 and 15, characterized in that the anti-chafing composition applied to one or several components of the article has bacte-riostatic action.
17. 17. A disposable absorbent article, as claimed in claims 2, 3, 4, 5, ~ 6, 7, 8, 9, 11, 14, 15 and 16, characterized in that the anti-chafing composition applied on one or Several components of the article avoids the conversion to ammonia of the urea produced by the urine.
18. 18. A disposable absorbent article, as claimed in claims 2, 3, 4, 5, 6, 7, 8, 9, 11, 14, 15, 16 and 17, characterized in that the anti-chafing composition applied on one or several components of the article have an inhibitory action of allergies.
19. 19. A disposable absorbent article, as claimed in claims 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 14, 15, 16, 17 and 18, characterized in that the anti-chaffing composition is applied on one or several components of the article by means of a spray.
20. 20. An anti-chafing composition, for use in disposable absorbent articles, characterized in that it comprises ingredients selected from the group consisting of aromatic alcohols and their non-phenolic derivatives; salts of citric acid and its derivatives; alcoholic derivatives of higher fatty acids, and triglyceride acid esters and their derivatives.
21. 21. A method for manufacturing a disposable absorbent article with anti-chaffing characteristics, comprising applying to the disposable absorbent article the composition of claim 20.
22. 22. A method for manufacturing a disposable absorbent article with anti-chaffing characteristics, in accordance with Claim 21, which comprises applying the anti-chaffing composition to one or more components thereof.
23. 23. A method for manufacturing a disposable absorbent article with anti-chafing characteristics, according to claim 21, wherein the anti-chafing composition is applied to the top or inner sheet or layer of the disposable absorbent article.
24. 24. A method for manufacturing a disposable absorbent article with anti-chafing characteristics, according to claim 23, wherein the anti-chafing composition is applied to the material from which the upper or inner sheet or layer of the disposable absorbent article is formed.