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(12) Patent Application Publication (10) Pub. No.: US 2005/0101927 A1 Joseph Et Al

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(12) Patent Application Publication (10) Pub. No.: US 2005/0101927 A1 Joseph Et Al US 2005O101927A1 (19) United States (12) Patent Application Publication (10) Pub. No.: US 2005/0101927 A1 JOSeph et al. (43) Pub. Date: May 12, 2005 (54) ABSORBENT PRODUCTS COMPRISINGA (73) Assignee: Kimberly-Clark Worldwide, Inc. MOISTURIZING AND LUBRICATING COMPOSITION (21) Appl. No.: 10/659,969 (22) Filed: Sep. 11, 2003 (75) Inventors: Wael R. Joseph, Appleton, WI (US); Publication Classification Keisha Clarke, Appleton, WI (US); Duane G. Krzysik, Appleton, WI (US); (51) Int. Cl." ............................ A61F 13/15; A61F 13/20 Bernard J. Minerath III, Oshkosh, WI (52) U.S. Cl. .............................................................. 604/367 (US) (57) ABSTRACT The present invention is generally directed to absorbent Correspondence Address: products comprising a moisturizing and lubricating compo SENNIGER POWERS LEAVITT AND Sition. The moisturizing and lubricating composition com ROEDEL prises an emollient, a humectant, and immobilizing agent ONE METROPOLITAN SQUARE and a compatibilizing agent. Optionally, the moisturizing 16TH FLOOR and lubricating compositions can comprise a dispersing ST LOUIS, MO 63102 (US) agent, or other components. 40 38 Patent Application Publication May 12, 2005 Sheet 1 of 4 US 2005/0101927 A1 40 i. 44 30 50 L - - - - - - - - - - - - - - - - - - - - - - - - - - - | V 24 52 (^, | / 28 28 \\ / / \ , | f | \\ || | ||| 1 26 | I | | 2 | \ \ 46 //i? | \\ A./ | V WyV 42 N N 22 32 - 1 36 -1 - - - - - - - - - - - - - - 1. -- Patent Application Publication May 12, 2005 Sheet 2 of 4 US 2005/0101927 A1 FIG. 2 52 34 >N NYXNNNN 36 32 46 Patent Application Publication May 12, 2005 Sheet 3 of 4 US 2005/0101927 A1 FIG. 3 120 to --- —- - - 2 S 80 - D ?y 60 ls s 40 2O --- -L-- -- - - - O AL AK AB AC AG Formulation Patent Application Publication May 12, 2005 Sheet 4 of 4 US 2005/0101927 A1 FIG. 4 1809/o 1609/o 1409/6 1209/6 100% --- 80% 60% 40% ----- 209/6 O9/6 AK AL AG AC AB Control Formulation US 2005/0101927 A1 May 12, 2005 ABSORBENT PRODUCTS COMPRISINGA lations to date have proven to be unstable, even at slightly MOISTURIZING AND LUBRICATING elevated temperatures and have tended to migrate into the COMPOSITION product matrix prior to use where the formulation is only of minimal, if any benefit. Additionally, many formulations BACKGROUND OF THE INVENTION used to date have had very poor transfer rates from the product to the skin where it can be of use. AS Such, it is 0001. This invention is directed to moisturizing and lubri apparent that there is a commercial need for hydrophilic cating compositions which may be used on absorbent prod lubricating formulations Suitable for use in combination with ucts Such as disposable diapers, feminine napkins, tampons, absorbent products Such as disposable diaperS and inconti interlabial pads and/or interlabial devices. More particularly, nence products. It would be advantageous if the lubricating this invention is directed towards moisturizing and lubricat formulation could provide a moisturization benefit to alle ing compositions for use on the bodyfacing Surface of an Viate skin dryneSS, as well as present a Soft, aesthetically absorbent product, Such as an interlabial pad, which improve pleasing feel to reduce friction between the product and skin. the level of comfort to the wearer and may provide a skin Also, it would be advantageous if the lubricating formula health benefit. tions were formulated to be fluid during processing and 0002 The stratum corneum is the outer-most layer of the rapidly Solidify after application to the products. skin and is responsible for regulating skin water levels and functioning as a barrier against chemicals and other Stressors SUMMARY OF THE INVENTION found in the environment. The complex arrangement of 0007. The present invention is generally directed to mois lipids in the intercellular space of the Stratum corneum is turizing and lubricating compositions for use in combination responsible for the establishment of normal barrier function. with absorbent products Such as disposable diapers, incon Multi-layered Structures of cholesterol, ceramides, and fatty tinence garments, training pants, feminine pads, tampons, acids, as well as Some other minor lipids, provide the major and interlabial pads. The moisturizing and lubricating com barrier to the transport of hydrophilic Substances into or positions, which are hydrophilic, are introduced onto the through the skin. The link between the barrier function and body facing Surface of the disposable article. Upon use, the skin health is apparent from the skin inflammation caused by lubricating composition contacts the Skin and is at least lipid extraction from the skin. partially transferred onto the skin to improve skin health. 0.003 Skin barrier can be damaged due to a number of 0008. In one embodiment described herein, at least a mechanisms. One mechanism for damage is physical abra portion of the body facing Surface of a disposable absorbent Sion, which may be caused by repeated rubbing of dispos article comprises a hydrophilic composition which is Solid able absorbent articles on the skin. With physical abrasion, or semisolid at a temperature of about 30° C. to about 80 layers of the skin are Stripped away causing damage to the C. and comprises a humectant, an immobilizing agent, a Stratum corneum. Also, biological fluids, Such as urine, compatibilizing agent, and an emollient. Optionally, the feces, nasal and vaginal Secretions, may contain a variety of moisturizing and lubricating compositions of the present components that can damage the Stratum corneum. Some invention may comprise a skin barrier enhancing agent, Such Specific examples include proteases, lipases, bile acids, and as Sunflower oil or borage oil, and an antioxidant to Stabilize fatty acids. Once the Stratum corneum barrier is compro the Skin barrier enhancing agent. Additionally, a Sterol or mised, skin inflammation can occur. sterol derivative may be added to improve skin health. 0004 Excessive hydration of the skin can also have a 0009. The moisturizing and lubricating compositions of negative impact on Skin barrier. The hydration level of the present invention provide a reduction in the frictional diapered skin, for example, may reach between five and ten discomfort and dryneSS associated with the use of absorbent times that of undiapered skin. Frequent contact of diapered articles. skin with fluids Such as urine and feces may also contribute to increased hydration. Increased skin hydration disrupts 0010 Briefly, therefore, the present invention is directed skin lipid organization in the Stratum corneum, and may to an absorbent product comprising an absorbent Substrate increase the Skin permeability of irritants, thus increasing and a moisturizing and lubrication composition. The mois the risk of Skin inflammation. turizing and lubricating composition comprises from about 1% (by weight) to about 40% (by weight) of an emollient, 0005 Disposable absorbent articles such as diaper and from about 1% (by weight) to about 20% (by weight) of a incontinence garments are commonly used to absorb body humectant, from about 30% (by weight) to about 90% (by fluids and leave the Skin dry. These products, in addition to weight) an immobilizing agent, and from about 1% (by absorbing and wiping fluids, however, also abrade the skin weight) to about 40% (by weight) of a compatibilizing during use and frequently do not leave the skin completely agent. No more than about 50% (by weight) of the compo dry and free of the body fluid after use. During frequent use nents of the moisturizing and lubricating composition are of these products, the skin can become So dry and/or abraded liquid at room temperature and no less than about 50% of the as to appear red and be Sore to the touch. To reduce this components are Solid at room temperature. Also, at least problem, additive formulations have been applied to absor 85% (by weight) of the components of the moisturizing and bent articles to provide lubricity and moisture. Once depos lubricating composition form a single phase at a temperature ited on the skin, these products may provide a skin benefit of from about 45° C. to about 80° C. by occluding the skin and protecting the Stratum corneum until the damage is repaired. 0011. The present invention is further directed to an absorbent product comprising an absorbent Substrate and a 0006 To date, the formulations applied to absorbent moisturizing and lubrication composition. The moisturizing articles have not been completely Satisfactory. Many formu and lubricating composition comprises from about 1% (by US 2005/0101927 A1 May 12, 2005 weight) to about 40% (by weight) of a silicone, from about crotch region between the legs. The opposed side edges 28 1% (by weight) to about 20% (by weight) of a humectant, define leg openings for the diaper and generally are curvi from about 30% (by weight) to about 90% (by weight) an linear or contoured to more closely fit the legs of the wearer. immobilizing agent, from about 1% (by weight) to about The opposed end edges 30 define a waist opening for the 40% (by weight) of a compatibilizing agent and a dispersing diaper 20 and typically are Straight but may also be curvi agent. No more than about 50% (by weight) of the compo linear. nents of the moisturizing and lubricating composition are liquid at room temperature and no less than about 50% of the 0019 FIG. 1 is a representative plan view of the diaper components are Solid at room temperature. Also, at least 20 in a flat, non-contracted State. Portions of the structure are 85% (by weight) of the components of the moisturizing and partially cut away to more clearly show the interior con lubricating composition form a single phase at a temperature struction of the diaper 20, and the surface of the diaper of from about 45° C. to about 80° C. which contacts the wearer is facing the viewer. The diaper 20 includes a Substantially liquid impermeable outer cover 32, BRIEF DESCRIPTION OF THE DRAWINGS a porous, liquid permeable bodyside liner 34 positioned in facing relation with the Outer cover 32, and an absorbent 0012 FIG.
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