RU2385168C1 - New absorbent product - Google Patents

Abstract

FIELD: medicine.

SUBSTANCE: present invention is related to medicine, specifically to absorbent product chosen from the group of diapers, panty liners, hygienic liners and means applied in incontinence; the absorbent product includes the first layer pervious to liquid to fit closely to the user's body, the second layer impervious to liquid turned outside from the user's body, and an internal part including an absorbing core between the first and second layers, differing that the aforementioned internal part is at least partially impregnated with a skin care preparation.

EFFECT: invention provides release of the skin care preparation when needed exactly.

8 cl, 12 dwg, 6 ex

Description

The present invention provides an absorbent article including a liquid permeable first layer, a liquid permeable second layer, and an interior located between the first and second layers. The interior consists of an absorbent core, which also contains a skin care product. In particular, a skin care substance can be introduced into a strip of nonwoven material in the interior somewhere between the first and second layers. Alternatively, the skin care agent may be incorporated into the lipid phase, preferably so that the granules are located between the absorbent core and the first and / or second layer.

State of the art

The main function of absorbent products, such as daily panty liners, sanitary towels, incontinence products, and diapers, is to absorb and retain body secretions. Thus, such products are intended to prevent body secretions from staining, moisturizing, and otherwise contaminating clothes, bedding, or other products coming into contact with the user.

In addition, the products are also designed to prevent such body secretions from accumulating on the skin of the user, which, among other things, can lead to skin irritations.

However, it is difficult to create absorbent articles that are leak resistant and suitable for every potential user. Another problem of such products is the friction of the product on the skin. Such friction can also cause skin irritation, and the problem is especially significant when the skin is wet.

The problem with the occurrence of absorbent products and the associated pollution and irritation of the skin could be at least partially solved by using lotions and skin care formulations for absorbent products. Such lotions and skin care products can be added to the skin to form a “barrier” so that body excretions do not adhere to the skin. Alternatively, such agents can directly prevent / treat skin irritation by adding skin-friendly lipid formulations and / or antibacterial formulations. WO 03/034965 discloses an insert intended for use with an absorbent article. The insert has a first surface impregnated with a skin care product and a second surface impervious to the aforementioned skin care product. Such an insert can be placed freely relative to the absorbent product, but it is much more difficult to use several products at a time compared to only one product. In addition, the solution according to WO 03/034965 can also produce more waste.

Similarly, DE-U-20117973 relates to a fabric that could be used as an insert for diapers. The fabric consists of a fleecy material coated with a solid skin care compound. Therefore, the object DE-U-20117973 is also more complex for the consumer to use and leads to more waste, because more components are used at the same time.

US, B2, 6426444 describes an absorbent disposable article, such as a diaper, where at least a portion of the liquid-permeable hydrophilic topcoat includes a lotion coating to reduce adherence of the stool to the wearer's skin. The lotion is applied to the top layer in the form of strips that are separated by stripes not containing lotion. Since the lotion is located on the outside of the product, there is a risk that the lotion layer will come off before the product wears out.

WO-00/124748 provides an absorbent article in which at least a portion of the article contains a skin care composition. The product also includes a barrier layer that is impregnated to reduce movement of the aforementioned skin care composition.

WO98 / 24931 discloses an absorbent article having barrier leg cuffs at the edges of the aforementioned article. At least part of the leg cuffs is coated with a lotion intended to be supplied to the user when using the product. Since the lotion is located on the outside of the product, there is a risk that the lotion layer will come off before the product wears out.

US, A, 20030100877 and US, A, 20040043049 relate to absorbent articles in which a skin care component is included in a binder used to make the articles. The binder is at least partially dissolved upon release of the aforementioned skin care component, which in turn can lead to a decrease in the strength of the absorbent article.

It is also known to include auxiliary components, such as systems for preventing the appearance of an undesirable odor in absorbent products. Such absorbent articles are described in US, A, 2004/0122387 and US, A, 2004/0127866. These documents reveal several alternatives to prevent unwanted odors. Odor can be absorbed, for example, by zeolites or oxidized by oxidizing agents, placed next to the absorbent core of the absorbent article. In this case, nothing is released from the unwanted odor warning system. Alternatively, gaseous aromatic substances may be released. Nothing is disclosed about the release of skin care formulations.

Accordingly, there is a need for improved methods for administering skin care compositions for absorbent products.

SUMMARY OF THE INVENTION

The aforementioned problems are solved according to the present invention by providing an absorbent article including a liquid permeable first layer, a liquid permeable second layer and an inner part located between the first and second layer, where the inner part is at least partially impregnated with a skin care product.

Definitions

The term “absorbent article” as used herein refers to an absorbent article selected from the group of daily panty liners, sanitary napkins, incontinence products, and diapers. The absorbent article consists of a liquid-permeable first layer intended to lie against the wearer's body and a liquid-permeable second layer intended to lie outward from the wearer's body.

The term “inner portion” as used herein refers to a portion of an absorbent article that is sandwiched between the first and second layers. The term “absorbent core” as disclosed herein refers to a portion of the interior that is capable of absorbing or retaining substantially all of the liquid absorbed by the absorbent article.

The term “skin care product” as used herein refers to an agent that has a beneficial effect on the skin. It can, for example, soften the skin, be useful for treating skin problems, etc.

The term "lipid phase" as disclosed herein refers to a water-insoluble organic phase with fatty properties. Lipids suitable for use in the lipid phase of the invention include petroleum derived lipids, synthetic lipids and lipids of animal and vegetable origin.

DETAILED DESCRIPTION OF THE INVENTION

As mentioned above, the present invention relates to an absorbent article selected from the group of daily panty liners, sanitary towels, incontinence agents, and diapers. The absorbent article consists of a liquid-permeable first layer intended to lie against the wearer's body and a liquid-permeable second layer intended to lie outward from the wearer's body.

The first layer is preferably pliable, soft and does not irritate the skin of the wearer of the article. Further, the first layer, as already mentioned, passing fluid, allows fluid (for example, secretions of the body, such as menstrual fluid and / or urine) to easily penetrate through it. A suitable first layer may be made from a wide range of materials, such as woven and non-woven materials (eg, non-woven network of fibers); polymeric materials, such as formed thermoplastic films with holes, plastic films with holes and hydroformed thermoplastic films; polystyrene, mesh polystyrene; mesh thermoplastic films; and thermoplastic canvases. Suitable woven and non-woven materials may consist of natural fibers (e.g., wood or cotton fibers), synthetic fibers (e.g., polymer fibers, such as polyester, polypropylene, or polyethylene) or a combination of natural and synthetic fibers. When the first layer includes a non-woven fabric, it can be obtained by a method using a high-speed air stream, carded, obtained by the method of wet laying, aerodynamic method from the melt, hydroplot, a combination of the above methods or the like.

As already mentioned, the second layer is impervious to liquids (for example, body secretions, such as menstrual fluid and / or urine) and is made from a thin plastic film or other flexible liquid-tight material known to one skilled in the art. The second layer prevents wetting of the articles in contact with the absorbent article, secretions absorbed and retained in the interior. Thus, the second layer may include a woven or non-woven material, polymer films, such as a thermoplastic film of polyethylene or polypropylene, or composite materials, such as a film-coated non-woven material. In addition, the second layer may allow fumes to escape from the inside (i.e., the second layer is breathable), while preventing the secretions from penetrating through the second layer. Such layers are known in the art.

The absorbent article also includes an inner part, which in turn consists of an absorbent core and an additional auxiliary component. The inner part is placed between the first and second layers.

The absorbent core is capable of absorbing or retaining fluids (e.g., body secretions, such as menstrual fluid and / or urine). The absorbent core is preferably compressible, malleable and does not irritate the skin of the wearer. Absorbent core can be made in a wide variety of sizes and shapes. The absorbent core may include any of a wide variety of liquid absorbent materials commonly used in absorbent products, such as air, creped cellulose wool, expanded polymers, chemically reinforced, modified or cross-linked cellulosic fibers, synthetic fibers, fabric, absorbent foams, super absorbent polymers or any equivalent material or combination of materials, or mixtures thereof. The configuration and design of the absorbent core may also vary in accordance with the state of the art.

An auxiliary component is a component that can store and release beneficial agents through the aforementioned first fluid-passing first layer. Examples of such auxiliary components are strips or lipid formulations.

The interior of the present invention is at least partially impregnated with a skin care agent.

Skin care products

The skin care products of the present invention are solid or more often semi-solid at 20 ° C, i.e. at ambient temperature. By “semi-solid” is meant that the composition of the skin care product has a rheology typical of pseudoplastic or plastic fluids.

When no shear occurs, the skin care compositions may have a semi-solid appearance, but may become fluid when the shear increases. This is due to the fact that while the skin care composition contains predominantly solid components, it also includes some minor liquid components.

The skin care compositions of the present invention are at least semi-solid at room temperature to minimize movement of the skin care agent. In addition, skin care formulations preferably have a final melting point (100% liquid) above potential “stressed” storage conditions, which may be greater than 45 ° C.

Preferably, 2-50% of the present skin care composition should be liquid at 20 ° C, and 25-95% of the composition should be liquid at 37 ° C. The final melting point should be above 38 ° C. In an even more preferred embodiment, 3-25% of the composition should be liquid at 20 ° C and 30-90% of the composition should be liquid at 37 ° C. In this embodiment, the final melting point should be above 45 ° C. Being solid or semi-solid at ambient temperature, these skin care products do not tend to flow and migrate to external surfaces from the inside of the diaper on which they are applied.

The compositions of the skin care products of the present invention may include: (1) an emollient (a); (2) an emollient binding agent (s); (3) optionally hydrophilic surfactant (s); and (4) other additional components.

The viscosity at 20 ° C of the prepared skincare formulations comprising an emollient, a binding agent and additional components should be as high as possible to prevent the lotion from flowing out of the interior of the absorbent article. Unfortunately, high viscosities can also lead to skincare formulations that are difficult to apply without technological problems. Therefore, a balance must be achieved so that the viscosity is high enough to hold the compositions of the skin care products at the desired locations in the absorbent article. Suitable viscosities for skincare formulations will typically vary from about 1 to about 5000 centipoises, preferably from about 5 to about 200 centipoises, more preferably from about 10 to about 100 centipoises, measured at 60 ° C.

The key active ingredient in these skin care formulations is one or more emollients. As used here, an emollient is a material that softens, soothes, makes smooth, envelops, lubricates, moisturizes or cleanses the skin. An emollient typically achieves several of these goals, such as soothing, moisturizing, and lubricating the skin. In the context of the present invention, these emollients have either a plastic or liquid consistency at 20 ° C, i.e. at ambient temperatures. This specific emollient consistency allows the composition of the skin care product to give a feeling of softness, smoothness like a lotion.

Emollients suitable for use in the present invention are also substantially free of water. Essentially free of water means that water was not intentionally added to the emollient. The addition of water to the emollient is not necessary in the preparation or use of the compositions of the skin care products of the present invention and might require an additional drying step. However, minor or residual amounts of water in the emollient that are collected as a result of, for example, ambient humidity can be tolerated without adverse effects. Generally, emollients used in the present invention contain about 5% or less water, preferably about 1% or less water, most preferably about 0.5% or less water.

The emollients suitable for use in the present invention may be based on oil, from the group of fatty acid esters, from the group of alkyl ethoxylate, ethoxylates of esters of fatty acids, from the group of fatty alcohols, from the group of polysiloxanes, or a mixture of these emollients. Suitable petroleum-based emollients include hydrocarbons or mixtures of hydrocarbons having chains of 16 to 32 carbon atoms in length. Petroleum-based hydrocarbons having chains of this length include mineral oil (also known as liquid petroleum jelly) and petroleum jelly (also known as mineral wax, petroleum jelly and petrolatum). Mineral oil usually refers to less dense mixtures of hydrocarbons having from 16 to 20 carbon atoms. Petroleum jelly usually refers to denser mixtures of hydrocarbons having from 16 to 32 carbon atoms. Vaseline and mineral oil are particularly preferred emollients for the skin care compositions of the present invention.

Suitable emollients of the fatty acid ester group include those derived from C ₁₂ -C ₂₈ fatty acids, preferably C ₁₆ -C ₂₂ saturated fatty acids, and short chain monohydric alcohols (C ₁ -C ₈ , preferably C ₁ -C ₃ ). Representative examples of such esters include methyl palmitate, methyl stearate, isopropyl laurate, isopropyl myristate, isopropyl palmitate, ethyl hexyl palmitate, and mixtures thereof.

Suitable emollients of the fatty acid ester group can also be prepared from longer chain fatty alcohol esters (C ₁₂ -C ₂₈ , preferably C ₁₂ -C ₁₆ ) and shorter chain fatty acids, for example, lactic acid such as lauryl lactate and cetillactate.

Suitable emollients of the alkyl ethoxylate group include C ₁₂ -C ₂₂ fatty alcohol ethoxylates having an average degree of ethoxylation of from about 2 to about 30. It is preferred that the alkyl ethoxylate emollients are selected from the group consisting of lauryl, cetyl and stearyl ethoxylates, and mixtures thereof having an average degree of ethoxylation ranging from about 2 to about 23.

Typical examples of such alkyl ethoxylates include laureth-3 (lauryl ethoxylate having an average degree of ethoxylation of 3), laureth-23 (lauryl ethoxylate, having an average degree of ethoxylation of 23), cetet-10 (cetyl alcohol ethoxylate having an average degree of ethoxylation of 10), and stearet -10 (stearyl alcohol ethoxylate having an average degree of ethoxylation of 10).

These emollients of the alkyl ethoxylate group are usually used in combination with petroleum-based emollients, such as petrolatum, in a weight ratio of alkyl ethoxylate emollients to oil-based emollients from about 1: 1 to about 1: 5, preferably from about 1: 2 to about 1A.

Suitable emollients of the fatty alcohol group include C ₁₂ -C ₂₂ fatty alcohols, preferably C ₁₆ -C ₁₈ fatty alcohols. Typical examples include cetyl alcohol and stearyl alcohol and mixtures thereof. These fatty alcohol emollients are typically used in combination with oil based emollients, such as petroleum jelly, in a weight ratio of fatty alcohol emollients to oil emollients from about 1: 1 to about 1: 5, preferably from about 1 : 1 to about 1: 2.

Other suitable emollient groups for use in the present invention include polysiloxane compounds. In general, polysiloxane materials suitable for use in the present invention include those having siloxane monomer units of the following structure: R1- (SiO ^- ) -R2, where R1 and R2 for each independent siloxane monomer unit each can independently be hydrogen or any alkyl , aryl, alkenyl, alkaryl, aralkyl, cycloalkyl, halogenated hydrocarbon or other radical. Any of these radicals may be substituted or unsubstituted. The radicals R1 and R2 of any individual monomer unit may differ from the corresponding functional groups of the next adjacent monomer unit. Additionally, the polysiloxane can be either straight chain or branched chain, or have a cyclic structure. The radicals R1 and R2 may additionally independently be other silaceous functional groups, such as, but not limited to, siloxanes, polysiloxanes, silanes and polysilanes. The radicals R1 and R2 may contain any variety of organic functional groups, including, for example, alcohol, carboxylic acid, phenyl and amine functional groups.

Examples of alkyl radicals are methyl, ethyl, propyl, butyl, pentyl, hexyl, octyl, decyl, octadecyl and the like. Examples of alkenyl radicals are vinyl, allyl, and the like. Examples of aryl radicals are phenyl, diphenyl, naphthyl, and the like. Examples of alkaryl radicals are tolyl, xylyl, ethyl phenyl and the like.

Examples of aralkyl radicals are benzyl, alpha-phenylethyl, beta-phenylethyl, alpha-phenylbutyl and the like. Examples of cycloalkyl radicals are cyclobutyl, cyclopentyl, cyclohexyl and the like. Examples of halogenated hydrocarbon radicals are chloromethyl, bromoethyl, tetrafluoroethyl, fluoroethyl, trifluoroethyl, trifluorotolyl, hexafluoroxyl, and the like.

The viscosity of suitable polysiloxanes can vary as widely as the viscosity of polysiloxanes generally changes while the polysiloxane is liquid or can be made liquid for use in an absorbent product. It includes, but is not limited to, a viscosity as low as 5 centistokes (at 37 ° C as measured with a glass viscometer) to about 20,000,000 centistokes. Preferably, the polysiloxanes have a viscosity at 37 ° C. ranging from about 5 to about 5,000 centistokes, more preferably from about 5 to about 2,000 centistokes, most preferably from about 1,000 centistokes. High viscosity polysiloxanes, which themselves are resistant to spreading, can be effectively placed in an absorbent product by methods such as, for example, emulsifying polysiloxane in a surfactant or providing polysiloxane in solution with a solvent such as hexane, which is provided for illustrative purposes only. Specific methods for using polysiloxane emollients in absorbent products are discussed in more detail below.

Preferred polysiloxane compounds for use in the present invention are disclosed in US 5,059,282. Particularly preferred polysiloxane compounds for use as emollients in lotion formulations of the present invention include phenyl-functional polymethylsiloxane compounds (e.g. Dow Coming 556 Cosmetic-Grade Fluid: polyphenylmethylsiloxane), dimethicone compounds, and cetyl or stearyl functionalized dimethicones, such as polysiloxane liquids Dow 2502 and Dow 2503, respectively. In addition to such a substitution with phenyl-functional or alkyl groups, an effective substitution can be made using amino, carboxyl, hydroxyl, ether, polyester, aldehyde, ketone, amide, ether and thiol groups. Of these effective substituent groups, a number of groups including phenyl, amino, alkyl, carboxyl, and hydroxyl groups are more preferred than others; and phenyl functional groups are most preferred.

In addition to petroleum-based emollients, emollients of the fatty acid ester group, fatty acid ester ethoxylates, emollients of the alkyl ethoxylates group, emollients of the fatty alcohol group, and polysiloxanes, emollients suitable for use in the present invention may include minor amounts (e.g. , up to about 10% of the total amount of emollients) of other, traditional emollients. These other conventional emollients include, but are not limited to, propylene glycol, glycerin, triethylene glycol, spermaceti or other waxes, fatty acids and esters of fatty alcohols having from 12 to 28 carbon atoms in their fat chain, such as stearic acid, propoxylated fatty alcohols; glycerides, acetoglycerides, and ethoxylated C ₁₂ -C ₂₈ fatty acid glycerides; other fatty esters of polyhydroxy alcohols; lanolin and its derivatives, and cod liver oil.

These other emollients should be included in such a way as to maintain the solid or semi-solid properties of the composition of the skin care products. The amount of emollient that may be included in the skin care product will depend on a variety of factors, including the particular emollient employed, the desired lotion-like effects, other ingredients in the composition, and similar factors. The composition of the skin care product may include from about 10 to about 95% emollient. Preferably, the composition comprises from about 20 to about 80%, most preferably from about 40 to about 75% of the emollient.

A key component of the skin care product formulations of the present invention is an agent capable of binding an emollient in an absorbent product in which a skin care composition is used. Since the emollient in the composition has a plastic or liquid consistency at 20 ° C, it tends to flow or migrate, even when subjected to slight crushing. Accordingly, in some situations, a binding agent must be added to achieve the melting characteristics of the skin care products of the present invention.

In addition to being miscible with (or soluble in) the emollient, the binding agent must have a melting point of at least about 35 ° C. This is to ensure that the binding agent itself does not tend to migrate or flow. Preferred binding agents will have a melting point of at least about 40 ° C. Typically, the binding agent will have a melting point in the range of from about 50 ° C to about 150 ° C.

Binding agents suitable for the present invention can comprise a member selected from the group consisting of fatty alcohols, C ₁₄ -C ₂₂ fatty acids, C ₁₂ -C ₂₂ fatty alcohol ethoxylates of C ₁₂ -C _22, having an average degree of ethoxylation within from 2 to about 30, and mixtures thereof. Preferred binding agents include C ₁₆ -C ₁₈ fatty alcohols, most preferably selected from the group consisting of cetyl alcohol, stearyl alcohol and mixtures thereof.

Mixtures of cetyl alcohol and stearyl alcohol are particularly preferred. Other preferred binding agents include C ₁₆ -C ₁₈ fatty acids, most preferably selected from the group consisting of palmitic acid, stearic acid and mixtures thereof. Mixtures of palmitic acid and stearic acid are particularly preferred. Still other preferred binding agents include fatty alcohol ethoxylates.

C ₁₆ -C ₁₈ having an average degree of ethoxylation ranging from about 5 to about 20. It is preferred that the fatty alcohols, fatty acids and fatty alcohol ethoxylates are linear.

It is important that these preferred binding agents, such as fatty alcohols

C ₁₆ -C ₁₈ increase the crystallization rate of the lotion, causing rapid crystallization of the lotion on the surface of the base. Therefore, a lower lotion content may be used or the sensation of using the lotion may be enhanced. Traditionally, large quantities of lotion have been needed to give softness due to the leakage of these fluids into the inside of the diaper.

Other groups of binding agents can be used either alone or in combination with the fatty alcohols, fatty acids and fatty alcohol ethoxylates described above. Examples of these other groups of binding agents include polyhydroxy fatty acid esters, polyhydroxy fatty acid amides, and mixtures thereof. Preferred esters and amides will have three or more free hydroxy groups on the polyhydroxy part and are usually non-ionic in nature. Due to the possible sensitivity of the skin of persons using diaper leg cuffs, on which the lotion is applied, these esters and amides should also be relatively soft and not irritate the skin.

Suitable polyhydroxy fatty acid esters for use in the present invention will have the formula: [R-COO] _n -Y, where R is a C ₅ -C ₃₁ hydrocarbyl group, preferably straight chain alkyl or C ₇ -C ₁₉ alkenyl, more preferably alkyl or straight chain alkenyl C ₉ -C ₁₇ , most preferably straight chain alkyl or C ₁₁ -C ₁₇ alkenyl, or a mixture thereof; Y is a polyhydroxyhydrocarbyl moiety having a hydrocarbyl chain with at least 2 free hydroxyls directly attached to the chain; and n is at least 1. Suitable Y groups can be obtained from polyols such as glycerol, pentaerythritol; sugars such as raffinose, maltodextrose, galactose, sucrose, glucose, xylose, fructose, maltose, lactose, mannose and erythrosis; sugar alcohols such as erythritol, xylitol, malitol, mannitol and sorbitol; and sugar alcohol anhydrides such as sorbitan.

One class of polyhydroxy fatty acid esters suitable for use in the present invention includes certain sorbitan esters, preferably sorbitan esters of saturated C ₁₆ -C ₂₂ fatty acids. Due to the method by which they are usually made, these sorbitan esters usually include mixtures of mono-, di-, tri-, etc. ethers. Typical examples of suitable sorbitan esters include sorbitan palmitates (e.g., SPAN 40), sorbitan stearates (e.g., SPAN 60), and sorbitan behenates, which include one or more mono-, di-, and triester versions of these sorbitan esters, e.g., sorbitan mono-, di- and tripalmitate, sorbitan mono-, di- and tristearate, sorbitan mono-, di- and tribehenate, as well as mixed fat of sorbitan mono-, di- and triesters of fatty acids.

Mixtures of various sorbitan esters such as sorbitan palmitates with sorbitan stearates can also be used. Particularly preferred sorbitan esters are sorbitan stearates, usually in the form of a mixture of mono-, di- and triesters (plus some tetraester), such as SPAN 60, and sorbitan stearates sold under the brand name GLYCOMUL-S by Lonza, Inc. Although these sorbitan esters usually contain mixtures of mono-, di- and triesters, plus some tetraester, mono- and diesters are usually the predominant species in these mixtures.

Another class of polyhydroxy fatty acid esters suitable for use in the present invention includes certain glyceryl monoesters, preferably glyceryl monoesters of saturated C ₁₆ -C ₂₂ fatty acids such as glyceryl monostearate, glyceryl monopalmitate and glyceryl monobegenate. In addition, like sorbitan esters, mixtures of glyceryl monoesters will usually contain a certain amount of di- and triesters. However, in order to be useful in the present invention, such mixtures should contain a predominant number of glyceryl monoesters.

Another class of polyhydroxy fatty acid esters suitable for use in the present invention includes certain sucrose fatty acid esters, preferably sucrose saturated C ₁₂ -C ₂₂ fatty acids. Sucrose monoesters and diesters are particularly preferred and include sucrose mono- and distearate and sucrose mono- and dilaurate.

Suitable polyhydroxy fatty acid amides for use in the present invention will have the formula: R ² CO-NR ¹ -Z, where R ¹ is H, hydrocarbyl C ₁ -C ₄ , 2-hydroxyethyl, 2-hydroxypropyl, methoxyethyl, methoxypropyl or a mixture thereof preferably C ₁ -C ₄ alkyl, methoxyethyl or methoxypropyl, more preferably C ₁ or C ₂ alkyl or methoxypropyl, most preferably C ₁ (i.e., methyl) or methoxypropyl; and R ² is a C ₅ -C ₃₁ hydrocarbyl group, preferably alkyl or alkenyl

Straight chain C ₇ -C ₁₉ , more preferably straight chain alkyl or alkenyl C ₉ -C ₁₇ , most preferably straight chain alkyl or alkenyl C ₁₁ -C ₁₇ , or a mixture thereof; and Z is a polyhydroxyhydrocarbyl moiety having a linear hydrocarbyl chain with at least 3 hydroxyls directly attached to the chain. See US 5174027, which discloses such polyhydroxy fatty acid amides, as well as their preparation.

The Z part will preferably be obtained from a reducing sugar in a reductive amination reaction; most preferably glycidyl. Suitable reducing sugars include glucose, fructose, maltose, lactose, galactose, mannose and xylose.

High dextrose corn syrup, high fructose corn syrup and high maltose corn syrup can be used in the same way as the individual sugars mentioned above. These corn syrups can form sugar component mixtures for the Z part.

The Z part will preferably be selected from the group consisting of: —CH ₂ - (CHOH) _n —CH ₂ OH, —CH (CH ₂ OH) - [(CHOH) _n -1] —CH ₂ OH, —CH ₂ OH- CH ₂ (CHOH) ₂ (CHOR ³ ) (CHOH) -CH ₂ OH, where n is an integer from 3 to 5, and R ³ is H or a cyclic or aliphatic monosaccharide. Most preferred are glycidyls, where n is 4, especially —CH ₂ - (CHOH) ₄ —CH ₂ OH.

In the above formula, R ¹ may be, for example, N-methyl, N-ethyl, N-propyl, N-isopropyl, N-butyl, N-2-hydroxyethyl, N-2-ethoxypropyl or N-2-hydroxypropyl.

R ² may be selected to provide, for example, cocoamides, stearamides, oleamides, lauramides, myristamides, capricamides, palmitamides, tallowamides, etc. The Z part may be 1-deoxyglycidyl, 2-deoxyfructidyl, 1-deoxymaltidyl, 1-deoxyylactidyl, 1-deoxygalactidyl, 1-deoxymanitil, 1-deoxymaltotriotidyl, etc. The most preferred polyhydroxy fatty acid amides have the general formula:

R ² —CO — NR ¹ —CH ₂ - [CHOH] ₄ —CH ₂ —OH,

where R ¹ is methyl or methoxypropyl; R ² is a straight chain alkyl or alkenyl group of C ₁₁ -C ₁₇ . These include N-lauryl-N-methyl glucamide, N-lauryl-N-methoxypropyl glucamide, N-cocoyl-N-methyl glucamide, N-cocoyl-N-methoxypropyl glucamide, N-palmityl-N-methoxypropyl glucamide, N-thaloyl- N-methyl glucamide, or N-thaloyl-N-methoxypropyl glucamide.

As previously noted, some of the binding agents require an emulsifier to solubilize in the emollient. Especially in the case of certain glucamides, such as N-alkyl-N-methoxypropyl glucamides having HLB values of at least about 7. Suitable emulsifiers will usually include those having HLB values below about 7. In this regard, the previously described sorbitan esters, such as sorbitan stearates having HLB values of about 4.9 or less, are suitable for solubilizing these glucamide binding agents in petrolatum. Other suitable emulsifiers include stearet-2 (stearyl alcohol polyethylene glycol esters which correspond to the formula CH ₃ (CH ₂ ) ₁₇ (OCH ₂ CH ₂ ) _n OH, where n has an average of 2), sorbitan tristearate, isosorbide laurate, and glyceryl monostearate. The emulsifier may be included in an amount sufficient to solubilize the binding agent in the emollient so that a substantially homogeneous mixture is obtained. For example, an approximately 1: 1 mixture of N-cocoyl-N-methyl glucamide and petroleum jelly, which will not usually melt into a single-phase mixture, will melt into a single-phase mixture after adding 20% 1: 1 mixture of Stareth-2 and sorbitan tristearate as an emulsifier.

Other groups of components that can be used as binding agents either alone or in combination with the aforementioned binding agents include waxes such as carnauba, bee, candelilla, paraffin, ceresin, esparto, ouricuri, rezowax, and other known waxes. Paraffin wax is the preferred wax.

An example of a particularly preferred solid paraffin is Parrafin S.P. 434 from Strahl and Pitsch Inc. P.O. Box 1098 West Babylon, NY 11704 (USA).

The amount of binding agent to be included in skin care products will depend on a variety of factors, including the particular emollient involved, the particular emulsifier used, the emulsifier that is required to solubilize the binding agent in the emollient, other components in the lotion and similar factors. The composition may include from about 5 to about 90% of a binding agent.

Preferably, the composition of the skin care product comprises from about 5 to about 50%, most preferably from about 10 to about 40% of a binding agent.

Depending on the specific binding agent used in the skin care product of the present invention, optionally additional hydrophilic surfactant (or a mixture of hydrophilic surfactants) can be arbitrarily used to improve processing suitability and / or stability of the compositions.

Suitable hydrophilic surfactants will be miscible with an emollient and a binding agent to form homogeneous mixtures. Due to the possible sensitivity of the skin of individuals using disposable absorbent products in which skin care products are used, these surfactants should also be relatively soft and not irritate the skin. Typically, these hydrophilic surfactants are non-ionic, not only in order not to irritate the skin, but also to avoid other undesirable effects on any splitting of the underlying tissue structure, for example, a reduction in tensile strength.

Suitable non-ionic surfactants can be substantially non-migratory after the lotion is applied to the legs of the diaper and will typically have HLB values in the range of from about 4 to about 20, preferably from about 7 to about 20. In order to be non-migratory, these non-ionic surfactants will usually have melt temperatures higher than those typically encountered during storage, transport, marketing and use of disposable absorbent products, for example at least iblizitelno 300 ° C. However, these non-ionic surfactants will preferably have melting points similar to the melting points of the previously described binding agents. Suitable nonionic surfactants for use in the lotion formulations of the present invention include alkyl glycosides; alkyl glycoside esters as described in US 4011389; alkyl polyethoxylated esters such as Pegosperse 1 OOOMS (available from Lonza, Inc., Fair Lawn, New Jersey, USA), ethoxylated sorbitan mono-, di- and / or triesters of C ₁₂ -C ₁₈ fatty acids having an average degree of ethoxylation of from about 2 to about 20, preferably from about 2 to about 10, such as TWEEN 60 (sorbitan esters of stearic acid having an average degree of ethoxylation of about 20) and TWEEN 61 (sorbitan esters of stearic acid having an average degree of ethoxylation of about 4), and products condensation of aliphatic alcohols with from about 1 to about 54 mol of ethylene oxide. The alkyl chain of an aliphatic alcohol is usually in a straight chain (linear) configuration and contains from about 8 to about 22 carbon atoms. Especially preferred are the condensation products of alcohols having an alkyl group containing from about 11 to about 22 carbon atoms with from about 2 to about 30 mol of ethylene oxide per mole of alcohol. Examples of such ethoxylated alcohols include condensation products of myristyl alcohol with 7 moles of ethylene oxide per mole of alcohol, condensation products of coconut alcohol (a mixture of fatty alcohols having alkyl chains varying in length from 10 to 14 carbon atoms) with about 6 moles of ethylene oxide. Many suitable ethoxylated alcohols are commercially available, including TERGITOL 15-S-9 (a condensation product of linear C ₁₁ -C ₁₅ alcohols with 9 moles of ethylene oxide) sold by Union Carbide Corporation; KYRO EOB (a condensation product of linear alcohols C ₁₃ -C ₁₅ with 9 moles of ethylene oxide) sold by The Procter & Gamble Co., surfactants of the NEODOL brand sold by Shell Chemical Co., in particular NEODOL 25-12 (a condensation product of linear alcohols C ₁₂ - C ₁₅ with 12 moles of ethylene oxide) and NEODOL 23-6.5T (a condensation product of linear alcohols C ₁₂ -C ₁₃ with 6.5 moles of ethylene oxide which was distilled (distilled) to remove certain impurities), and especially PLURAFAC surfactants sold by BASF Corp., in particular PLURAFAC A-38 (a condensation product of a straight chain C ₁₈ alcohol with 27 moles of ethylene oxide). (Certain hydrophilic surfactants, in particular ethoxylated alcohols, such as NEODOL 25-12, may also function as emollients of the alkyl ethoxylate group).

Other examples of preferred surfactants of the ethoxylated alcohol group include the Brij class of surfactants from ICI and mixtures thereof, Brij 72 (i.e., Stareth-2) and Brij 76 (i.e., Stareth-10) are particularly preferred. In addition, mixtures of cetyl alcohol and stearyl alcohol, ethoxylated to an average degree of ethoxylation from about to about 20, can also be used as a hydrophilic surfactant.

Another group of surfactants suitable for use in the present invention includes Aerosol OT, a sodium sulfasuccinic acid dioctyl ester sold by the American Cyanamid Company.

Another group of surfactants suitable for use in the present invention includes silicone copolymers such as General Electric SIF 1188 (a copolymer of polydimethylsiloxane and a polyoxyalkylene ester) and General Electric SF 1228 (a copolymer of silicone and polyester). These silicone surfactants can be used in combination with other groups of hydrophilic surfactants discussed above, such as ethoxylated alcohols. These silicone surfactants have been found to be effective at such low concentrations as 0.1%, more preferably from about 0.25 to about 1.0% by weight of the lotion composition.

The amount of hydrophilic surfactant required to improve the processing suitability and / or stability of the lotion composition will depend on the emollient group and the binding agent used, the HLB value of the surfactant used and similar factors. The lotion compositions of the present invention may optionally include from about 1 to about 50% hydrophilic surfactant, more preferably from about 1 to about 25% by weight of hydrophilic surfactant.

Skin care formulations may include other additional components typically found in the emollient, creams, and lotions of this group. Examples of such components include substances that adsorb irritating components in urine or excrement, such as clay mineral (bentonite, kaolin, montmorillonite, etc.), silica compounds (quartz, zeolites, water glass, etc.) or activated coal. Substances can be advantageously activated to increase the adsorbing properties through various treatments, for example, quaternary ammonium formulations.

Other such additional components are enzyme inhibitors. Examples of such inhibitors are iron or zinc metal salts, trace amounts of heavy metal ions such as copper or silver, ethylenediamine tetraacetyl acid (EDTA), soybean trypsin inhibitor, lima bean protease inhibitor, corn protease inhibitor, stearyl glycyrrhetinate, 30 glycerol triacetate, compositions of sulfobetaine, cholestyramine, para-guanidinobenzoates.

In addition, the compositions for skin care products may further include pH-regulating additives, for example organic or inorganic acids, such as adipic acid, ascorbic acid, benzoic acid, citric acid, malic acid, tartaric acid, lactic acid, phosphoric acid or hydrochloric acid. In addition, useful buffers are obtained from the aforementioned acids with corresponding salts. Buffers may also include polymeric acids, for example polyphosphoric acid or polyacrylic acid.

Skin care agent formulations may also further include probiotic microorganism additives that are characterized as antagonistic to undesirable microorganisms, such as urinary tract pathogens or skin infections pathogens. Examples of probiotic microorganisms that can be used are individual strains or mixtures of several strains of lactic acid bacteria taken from the species Lactobacillus acidophilus, Lactobacillus curvatus, Lactobacillus plantarum or Lactococis lactis. Skin care product formulations may also include more or less active substances, such as anti-inflammatory drugs, for example acetylsalicylic acid, allantoin, azulene, alpha bisabolol (chamomile), flavonoids, glycyrricic acid, ichthammol (Inotyol @)), tannins. Astringents (vasoconstrictors), for example TiO, ZnO (and other Zn 20 compounds), aluminum acetate solution, aluminum tartrate solution (and other Al compositions), ethanol or ethanol-based solutions.

In addition, additional components can be selected from alpha hydroxy acids (citric acid, tartaric acid, lactic acid, malic acid, etc.), ascorbic acid (vitamin C), vitamin A formulations (retinol, retinal, tretinoin and isotretinoin ), avocado sterols, betaine 25 (trimethylglycine), ceramides, grape seed extract, essential fatty acids, flavonoids, phytosphingosine, phytosterols, hyaluronic acid, yeast extract, chitosan, milk protein (Lactis proteinum), panthenol (provitamin B5, tocopherol (vita min E), ubiquinone (coenzyme Q10), pectin and urea.

In addition, additional components can be selected from perfume oils and also active components extracted from plants, for example a mixture of natural and synthetic aromas. Natural aromas include flower extracts such as aloe vera (Aloe barbadensis), seaweed extract, rosemary extract (lily, lavender, rose, jasmine, neroli, ylang-ylang), stems and leaves (geranium, patchouli, petigrene), fruits ( aniseed seeds, coriander, cumin, juniper), fruit peel (bergamot, lemon, orange), roots (nutmeg, angelica, celery, cardamom, costus, iris, calmus), wood (pine wood, sandalwood, guaiac wood, wood cedar, tropical red wood), herbs and grassy plants teny (tarragon, lemongrass, sage, thyme), needles and branches (spruce, pine, dwarf pine), resins and balsams (galbanum, elemi, benzoin, myrrh, olibanum, opoponaks). Also suitable are animal feedstocks such as, for example, cibetin and castoreum. Typical synthetic fragrances are ether products, esters, aldehydes, ketones, alcohols and a hydrocarbon group. Aromatic substances of the ester group are, for example, benzyl acetate, phenoxyethyl isobutyrate, para-tert-butylcyclohexyl acetate, linalyl acetate, dimethylbenzylcarbinyl acetate, phenylethyl acetate, linalylbenzoate, benzyl formate, ethylmethylphenylglycylpropyl benzylpropyl. Preferably, aloe vera is included in the formulations.

Esters include, for example, benzyl ethyl ester, aldehydes include, for example, linear alkanes having from 8 to 18 carbon atoms, citral, citronellal, citronyloxyacetaldehyde, cyclomenaldehyde, hydroxycytronellal, filial and bourgeonal, ketones include, for example, ionones, a-isomethylion methylcetyl ketone, alcohols include anethole, citronellol, eugenol, isoevgenol, geraniol, linalool, phenylethyl alcohol and terpineol, and hydrocarbons include mainly terpenes and balms.

Preference, however, is given to the use of mixtures of various flavors that together produce a pleasant aromatic note. Non-volatile essential oils, which are mainly used as flavor components, are also suitable as perfume oils, for example, sage oil, chamomile oil, clove oil, lemon balm oil, peppermint oil, cinnamon leaf oil, linden blossom oil, juniper berry oil vetiver oil; olibanum oil, galbanum oil, labolanum oil and lavender oil. Preference is given to using oil of bergamot, dihydromyrceneol, filial, lyral, citronellol, phenylethyl alcohol, hexyl cinnamaldehyde, geraniol, benzylacetone, cyclomenaldehyde, linalool, boisambrene forte, ambroxan, indole, hedione, sandelice, almond oil, lemon oil, lemon oil amyl glycolate, cyclovertal, lavender oil, clary sage oil, para-damaskone, geranium bourbon oil, cyclohexyl salicylate, Vertofix Coeur, Iso-E-Super, NP Fixolide, Evernyl, iraldein gamma, phenylacetic acid, geranyl acetate, benzyl acetate Romil lat, Irotyl and Floramat, alone or in mixtures.

A list of suitable components for skin care products can be obtained from CTFA (The Cosmetic, Toiletry and Fragrance Association).

In addition, antimicrobial agents may be included, for example, amorolfine, antibiotics, bacitracin, benzalkonium chloride, benzetonium chloride, cetrimide, fusidic acid, gentian violet (methylrosaniline chloride), hexachlorophene, hexylresorcinol, imidazole derivatives, for example, bifonazole, bifonazole miconazole), chlorhexidine, nystatin, povidone-iodine, terbinafine, triclosan and hydrogen peroxide.

In addition, antiviral agents, for example, acyclovir, imiquimod, podophyllotoxin, podophylox, cidofovir, penciclovir, vidarabine, idoxuridine, trifluuridine, thromantadine and lamivudine can be included.

Skin care formulations may also further include glucocorticoids, preferably of low activity, for example hydrocortisone, or antipruritic agents, for example antihistamines or local anesthetics (e.g. lidocaine).

Skin care formulations may also optionally include ready-made mixtures of skin ointments, creams, and lotions. For example, Necesse Lotion (components: water, propylene glycol, liquid paraffin, octyl octanoate, urea, PEG-8 distearate, stearet-2, stearet-21, betaine, lactic acid, tocopherol acetate, dimethicone, tromethamine, methyl paraben, propyl paraben, perfume) Necesse® skin cream (components: water, liquid paraffin, octyl stearate, sodium chloride, urea, glyceryl stearate, stearic acid, cetearyl alcohol, PEG-30 stearate, tocopherol acetate, tromethamine, dimethicone, methyl paraben, sorbic acid, propyl paraben, from Protective cream Necesse® (components: petroleum jelly, glyc serine, Arachis hypogaea, triethyl citrate, tocopherol acetate) or Necesse® Zinc Ointment (components: petrolatum, Arachis hypogaea, zinc oxide, retinyl palmitate, tocopherol). Necesse® products are commercially available through SCA Hygiene Products, Gothenburg, Sweden.

Other examples of some of the various substances that can be additionally used with the invention are described in part, inter alia, in the following documents: WO 96/16682, WO 96/16681, WO 97/05909, WO 99/45973, WO 99/45974, WO 99/45976 , DE 33 09 530 Cl, DE 41 36 540 Al, US 3489148 "Topsheet for disposable diapers" (Duncan et al.), WO 00/64502, WO 00/64501, WO 00/64500, WO 00/64503, and WO 99/22684.

Auxiliary component

Preferably, the skin care product is present only in the auxiliary component of the inside and is absent in the absorbent core.

In a preferred embodiment, the auxiliary component of the interior is a non-woven strip. The skin care agent may be continuously applied to the strip, or alternatively it may be applied to the strip in discrete positions. It is also preferred that the non-woven strip at least partially surrounds the absorbent core. The nonwoven strip may be made of the same materials as disclosed above in the description of the first layer.

As mentioned above, the auxiliary component may also be a lipid preparation or a lipid phase. In this case, the skin care product is included in the lipid phase. In addition, the skin care product binds in the lipid phase while the aforementioned phase is in the solid state, which means that unwanted spread of the skin care product can be avoided at a temperature below the melting temperature of the lipid phase. Accordingly, it is advantageous to use a phase that is substantially solid at a temperature of 25 ° C, and is preferably substantially in a liquid state at a temperature of 37 ° C. The lipid phase will then be solid during storage of the absorbent article, but it will melt during use and the skin care product will be released. Since the skin temperature of the user will be higher when the user is physically active, more skin care products will be released when more is required.

When the lipid phase is included as an auxiliary component, it is predominantly present in the form of granules in the absorbent article. Smaller granules melt faster in response to an increase in temperature than larger granules and whole layers, and therefore skin care products are released exactly when needed. Furthermore, it is relatively easy to distribute the granules at suitable positions in the absorbent article of the present invention.

Typically, the granule size is within the range of 0.5 mm to 5 mm.

In a preferred embodiment, the aforementioned inner part is impregnated with a skin care agent in a part intended to lie on the inside of the user's thigh.

In a preferred embodiment, the aforementioned interior is impregnated with a skin care agent at locations close to the edges or wings of the article.

The invention will now be described with reference to the attached figures, in which

figure 1 discloses an absorbent product according to the present invention, in particular a sanitary napkin in which strips impregnated with a skin care agent are located between the absorbent core and the liquid-permeable layer;

figure 2 presents a cross section along the line I-II of the sanitary napkins according to figure 1;

figure 3 relates to a daily lining in which granules of a lipid phase containing a skin care agent are located at the edges between a liquid permeable layer and a liquid permeable layer;

figure 4 presents a cross section along the line III-IV of the daily strip according to figure 3;

5 discloses a daily pad including both strips impregnated with a skin care agent located between an absorbent core and a liquid-permeable layer, and lipid granules containing a skin care agent located at the edges between a liquid-permeable layer and a non-liquid-permeable layer ;

figure 6 presents a cross section along the line V-VI of the daily strip according to figure 5;

Figure 7 describes a daily pad including strips soaked in skin care products along two edges;

figure 8 shows a cross section along the line VII-VIII of the daily strip according to figure 7;

Figure 9 discloses a daily liner in which granules of a lipid phase containing a skin care agent are located at the edges between a liquid permeable layer and a liquid permeable layer, from a relatively thicker central portion to thinner and more flexible end portions;

figure 10 shows a cross section along the line IX-X of the daily strip according to figure 9;

Figure 11 discloses a daily liner in which granules of a lipid phase containing a skin care agent are located at flexible edges between a liquid permeable layer and a liquid permeable layer; and

figure 12 presents a cross section along the line XI-XII daily strip according to figure 11.

Examples

The present invention will now be described with reference to the following examples, and the examples are provided for illustrative purposes only and are in no way intended to limit the scope of the invention.

Example 1

Figures 1 and 2 relate to a sanitary napkin 100 including a liquid-permeable first layer 112 intended to abut the wearer's body and a liquid-permeable second layer 110 intended to extend outward from the wearer's body. Strips 116 impregnated with a skin care agent are located between the absorbent core 114 and the first layer 112. The adhesive parts 106, 108 coated with detachable paper 102, 104 are located on the second layer 110 in the central part and on the wings 118.

Example 2

Figures 3 and 4 relate to the daily gasket 200, including a liquid-permeable first layer 202, designed to fit against the user's body, and a liquid-permeable second layer 208, designed to be located outside of the user's body. An absorbent core 206 is located in the center of the daily liner 200. The lipid phase granules 204 containing skin care products are located at the edges between the first layer 202 and the second layer 208 and are adjacent to the absorbent core 206.

Example 3

Figures 5 and 6 relate to the daily gasket 300, including a liquid-permeable first layer 302 intended to lie against the user's body, and a liquid-permeable second layer 308, designed to be located outside of the user's body. An absorbent core 310 is located at the center of the daily pad 300. Strips 306 impregnated with a skin care agent are located on top of the absorbent core 310 and below the first layer 302. The lipid phase granules 304 containing the skin care agent are located at the edges of the absorbent core 310 and between the first and second layers 302, 308.

Example 4

Figures 7 and 8 disclose a daily liner 400 including a fluid-permeable first layer 406 intended to abut the wearer's body and a liquid-permeable second layer 408 intended to extend outward from the wearer's body. An absorbent core 404 is located in the center of the daily panty liner 400. Strips 402 impregnated with a skin care agent are located along the long edges 410, 412 of the daily panty liner 400, adjacent to the absorbent core 404 and between the first and second layers 406, 408.

Example 5

Figures 9 and 10 show a daily gasket 500 including a fluid-permeable first layer 502 intended to abut the wearer's body and a liquid-permeable second layer 504 to be located outward from the wearer's body. An absorbent core 506 is located at the center of the daily pad 500. Granules 508 of the lipid phase containing the skin care agent are located at the edges of the absorbent core. Granules 508 are located both in the thicker portion 510 adjacent to the absorbent core and in the thinner portion 512 on the flexible edges 514 of the daily strip.

Example 6

Figures 11 and 12 disclose a daily liner 600 including a fluid-permeable first layer 602 designed to abut the wearer's body and a liquid-permeable second layer 604 intended to extend outward from the wearer's body. An absorbent layer 606 is located at the center of the daily liner 600. The granules 608 of the lipid phase containing the skin care agent are located at the edges of the absorbent core. Granules 608 are located in the thinner portion 610 on the flexible edges 612 of the daily strip.

Claims (8)

1. An absorbent article selected from the group of diapers, daily panty liners, sanitary napkins and incontinence products, wherein the absorbent article includes a liquid-permeable first layer intended to fit the wearer's body, a liquid-permeable second layer facing outward from the wearer's body and an inner part including an absorbent core located between the first and second layers, in which the aforementioned inner part is at least partially processed by the composition of means and for skin care, characterized in that the composition of the skin care products includes an emollient and a binding agent (s) for an emollient, the emollient having a plastic or liquid consistency at 20 ° C, and a binding agent for emollient the substance is miscible with an emollient and has a melting point of at least 35 ° C, while the composition of the skin care products is included in the lipid phase, which is solid at 25 ° C, and preferably is in a liquid state When a temperature of 37 ° C. 2. Absorbent product according to claim 1, characterized in that the inner part is formed of an absorbent core and at least one non-woven strip located between the first and second layers, and the strip is impregnated with skin care products. 3. The absorbent product according to claim 2, characterized in that the skin care product is applied to the strip continuously. 4. Absorbent product according to claim 2, characterized in that the skin care product is applied to the strip in discrete positions. 5. Absorbent product according to claim 2, characterized in that the non-woven strip at least partially surrounds the absorbent core. 6. Absorbent product according to claim 1, characterized in that the lipid phase is included in the form of one or more granules located between the absorbent core and the first and / or second layer. 7. Absorbent product according to claim 1, characterized in that the inner part is impregnated with a skin care product in a part intended to fit on the inside of the user's thigh. 8. The absorbent product according to claim 1, characterized in that the inner part is impregnated with a skin care product in locations close to the edges or wings of the product.

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