MX2008006972A - Lotion-treated tissue and towel - Google Patents

Abstract

A paper towel includes:(a) a cellulosic towel web;and (b) a lotion emulsion disposed on the towel web. The lotion emulsion is substantially liquid at room temperature and includes a polar emollient and a non-polar emollient as well as a surfactant composition comprising a nonionic surfactant;wherein the emollients and surfactant composition are selected such that the lotion emulsion is immobilized on the towel web in a semi-solid or solid state and the lotion emulsion is capable of forming an aqueous gel upon contact with water. Preferably, the lotion emulsion is a waterless micro-emulsion which is also capable of forming an aqueous micro-emulsion with water.

Description

LOTION TREATED PAPER TOWEL AND TISSUE PRIORITY CLAIM This application is a continuation of part of the co-pending US application Serial No. 10 / 141,442 entitled "aterless Lotion and Lotion-treated Substrate" [Anhydrous Lotion and Substrate Treated with Lotion ], (Attorney File No. 12216) filed on May 7, 2002. The disclosure of US Patent Application Serial No. 10 / 141,442 is hereby incorporated in its entirety in this application by reference and is hereby incorporated by reference. claims priority of the same in accordance with 37 CFR 1.78. TECHNICAL FIELD The present invention relates to a towel and tissue with a skin conditioning lotion therein which consists predominantly of an emollient composition and a surfactant composition. In a preferred embodiment, the lotion is an anhydrous microemulsion lotion substantially liquid at room temperature and becomes semi-solid or solid upon contact with the towel such that the lotion is immobilized on the surface of the towel. The immobilized lotion emulsion is capable of forming an aqueous gel upon contact with water when the towel is used. More preferably, the lotion can also form an aqueous emulsion when mixed with water. BACKGROUND OF THE INVENTION Adequate skin care is a simple and effective way to maintain not only healthy skin but also general health. A damaged skin does not protect against toxic substances, irritants and germs that are in the environment. Cleaning, moisturizing, and nourishing the skin is therefore very important. In fact, the literature is full of cleansing lotions and moisturizing lotions to restore and maintain the state of skin health. Skin care is especially important in the case of food service employees and health workers who must wash their hands frequently. Cellulose substrates coated with lotions are well known in the art. For example, U.S. Patent No. 5,665,426 to Krzysik et al. it refers to a lotion formula that can be applied to a tissue that transfers the lotion to the wearer's skin in order to reduce irritation and redness. The lotion composition of 26 is in the solid state at room temperature and is applied to substrates by a rotogravure printing process. U.S. Patent No. 5,871,763 to Luu et al. , also refers to a lotion formula that has to be melted before its application on a substrate for skin care treatment. The lotion composition of 763 is melted by the heat produced by the hands of a user of the cellulosic substrate to allow the transfer of the lotion to the user's skin. Another lotion-treated substrate is described in US Application No. 10 / 483,633 (Publication No. US 2005/0031847), wherein two separate and distinct phases, a lipid phase and an aqueous phase, are applied on a substrate with the subject to facilitate the cleaning of the skin. In addition, it is described in U.S. Patent No. 4,987,632 to Rowe et al. , a cleaning cloth treated with a composition containing a detergent, which is leached upon contact with water. See also US Patent No. 5,525,345 to Warner et al. There are also known lotions containing antimicrobial agents and pH balancing agents to protect and condition the skin. For example, U.S. Patent No. 6,238,682 to Klofta et al. , refers to a paper tissue treated with an anhydrous skin lotion which is in a semi-solid state at room temperature, which contains antimicrobial components as well as hydrophilic solvents and surfactants. See also U.S. Patent No. 6,352,700 to Luu al. , which refers to a substrate treated with a lotion, which is in the solid state at room temperature and contains a pH balance compound of the skin to maintain a coating of appropriate acid from the skin. Other lotions containing antimicrobial agents include U.S. Patent Application No. 10 / 608,661 (Publication No. US 2004/0039353), which refers to wet rags containing a cassava species extract and an antimicrobial agent; US Patent Application No. 09 / 851,273 (Publication No. US 2002/0031486), which relates to an antimicrobial cleaning composition, which contains little volatile alcohol or does not contain volatile alcohol, which can be used alone or in combination with lotions and the like; US Patent Application No. 09 / 738,365 (Publication No. US 2002/0002124), which relates to an antimicrobial cleaning composition having a pH of from about 2 to about 5.5; U.S. Patent No. 6,383,505 to Kaiser et al. , which refers to an antimicrobial lotion for topical use in the form of an oil-in-water emulsion; in addition, similar subject matter is disclosed in US Patent No. 6,482,423 to Beerse al.; U.S. Patent No. 6,488,943 to Beerse al al.; U.S. Patent No. 6,284,259 to Beerse et al.; US Patent No. 6,258,368 to Beerse al al.; U.S. Patent No. 6,183,763 to Beerse et al.; and US Patent No. 6,210,695 to Beerse al al. , as well . Lotions that are in solid or semi-solid state solid at room temperature and require melting before application on substrates, which are also known as "hot" lotions, present numerous drawbacks. On the one hand, semisolid or solid lotions require a costly and problematic heating system such as melting tanks and heated equipment to supply the lotion to the substrate. In addition, the cleaning of the accumulation and solidification of lotion on the conveyor roller of the production line during and after the application process is another costly and problematic procedure incurred in relation to what are known as "hot" lotions. The incorporation of water-based additives in such lotions is difficult, due to the phase separation and lack of uniform distribution of the additive in the lotion, either before or after application on the product substrate. In addition, "hot" lotions tend to become stiff when an excess of lotion is used, and the final products tend to leave stains when used. It has been found in accordance with the present invention that an emulsion lotion can be applied on a paper towel at room temperature and can be immobilized on the surface of the towel. The emulsion composition is selected such that it forms an aqueous gel lotion when mixed with water, said gel is easily transferred to the wearer's skin when the product COMPENDIUM OF THE INVENTION The present invention offers a towel and lotion paper tissue with enhanced microbial activity and improved skin care. Numerous attributes make the lotion products of the present invention especially suitable for towels used by workers in the food and health sector. An anhydrous microemulsion is immobilized on the substrate, but can easily return to a transferable form when it is humidified. Therefore, when in contact with wet hands, for example, the lotion can be easily transferred to the hands of a user. The lotion also forms a glutinous gel when mixed with water; a highly desirable feature for a lotion. Preferred lotions do not substantially affect the absorption capacity of base sheet, but increase AR times. This feature promotes the transfer of lotion to the skin as well, since a user will rub for a longer time with the towel when they dry their hands. When an antimicrobial activity is desired, an effective transfer is extremely important as can be observed by a person skilled in the art. Accordingly, a substrate treated with a suitable lotion for a towel or a towel is provided in one aspect of the invention. paper handkerchief, which includes: a) a cellulose fabric; and b) a lotion emulsion placed on the fabric, the lotion emulsion includes a polar emollient and a non-polar emollient as well as a surfactant composition comprising a non-ionic surfactant; c) wherein the lotion emulsion is in a substantially liquid state at room temperature; d) the emollients and the surfactant composition are selected such that the lotion emulsion is immobilized on the towel fabric in a semi-solid or solid state; and e) wherein in addition the lotion emulsion can form an aqueous gel upon contact with water. Typically, the emollient composition comprises a polar emollient such as a polar polyhydroxy emollient selected from propylene glycol, glycol, glycerol, sorbitol, diethylene glycol, methylene glycol, polypropylene glycol, polyethylene glycol, as well as a compatible non-polar emollient. The non-polar emollient can be selected from an aromatic or linear ester, Guerbet ester, mineral oil, squalane, squalene, and liquid paraffin. The surfactant composition typically comprises a non-ionic surfactant which may be selected from PEG-20 methyl glucose sesquistearate, PPG-20 methyl glucose ether, PPG-20 methyl glucose ether distearate, PEG-20 methyl glucose distearate, PEG-120 methyl glucose dioleate, and ethoxylated methyl glucose having from about 10 to about 20 repeating ethoxy units, as well as a co-surfactant. He Co-surfactant may be a fatty alcohol selected from C 2 -C 8 fatty alcohols, behenyl alcohol, iso-cetyl alcohol, and iso-stearyl alcohol. The lotion emulsion consists predominantly, 50% by weight or more, of emollient and surfactant in a preferred embodiment. In another preferred embodiment, the lotion emulsion is an anhydrous microemulsion and the fabric is treated with the lotion emulsion in an amount of about 0.1% to about 25% by weight of the dried fiber. In most cases, the fabric is treated with a lotion emulsion in an amount of about 0.5% to about 20% by weight of the dried fiber. The lotion emulsion may further comprise an antimicrobial agent such as for example 2,4,4'-trichloro-2 '-hydroxydiphenyl ether (triclosan), 3,4,4'-trichlorocarbanilide (triclocarban), 3,4,4' - trifluoromethyl-4,4'-dichlorocarbanilide (cloflucarban), 5-chloro-2-methyl-4-isothiazolin-3-one, iodopropynylbutylcarbamate, 8-hydroxyquinoline, 8-hydroxyquinoline citrate, 8-hydroxyquinoline sulfate, 4-chloroquinoline 3, 5-xylenol (chloroxylenol), 2-bromo-2-nitropropan-l, 3-diol, butoconazole, nystatin, terconazole, nitrofurantoin, phenazopyridine, acyclovir, chlrtrimazole, chloroxylenol, chlorhexidine, chlorhexidine gluconate, miconazole, terconazole, butylparaben , ethylparaben, methylparaben, methylchloroiso-thiazoline, methylisothiazoline, mixture thereof and the like. The microemulsion lotion optionally includes an additive selected from the group consisting of fragrances, preservatives, medicinal agents, humectants, natural therapeutic oils, botanical extracts, natural or synthetic powders and softening agents and the fabric may include a wet strength agent . In another aspect of the invention, a substrate treated with a suitable lotion for a towel or tissue is provided, comprising: (a) a cellulosic fabric; and (b) an anhydrous lotion microemulsion substantially liquid at room temperature immobilized in the tissue in a semi-solid or solid state; c) wherein the anhydrous microemulsion consists essentially of a polar emollient, a non-polar emollient and a surfactant composition comprising a non-ionic surfactant; and d) wherein the anhydrous microemulsion can form an aqueous microemulsion in contact with water. In another aspect of the invention, a substrate treated with lotion suitable for a towel or tissue is produced comprising: (a) a cellulosic fabric; and b) an anhydrous lotion microemulsion which is in a substantially liquid state at room temperature, immobilized in the tissue in a semi-solid state or in a solid state; wherein the microemulsion comprises a polar emollient, a non-polar emollient, a co-surfactant and a non-ionic surfactant. In another aspect of the invention there is provided a method for preparing a lotion treated substrate suitable for a towel or tissue, comprising: (a) preparing a lotion emulsion that includes a polar emollient, a non-polar emollient and a surfactant composition comprising a non-ionic surfactant; (b) treating a cellulose fabric with the lotion emulsion; wherein the emollient composition and the surfactant composition is selected such that the lotion emulsion is immobilized on the towel fabric in a solid state or in a semi-solid state wherein the lotion emulsion can form an aqueous gel upon entry in contact with water. Typically, the microemulsion is applied to the tissue by spraying or printing at room temperature. It will be understood that both the foregoing general description and the following detailed description are merely examples of the invention and are contemplated to provide a general perspective or structure for understanding the nature and character of the claimed invention. The attached drawings are included for the purpose of offering a further understanding of the invention and are incorporated in this specification and form part of it. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a partial phase diagram of the composition of Example 1 showing the phase characteristics of an anhydrous microemulsion; and Figure 2 is a partial phase diagram of the composition of Example 1 with water showing the phase behavior of a mixture of the composition of Example 1 with water. DETAILED DESCRIPTION OF THE INVENTION The invention is described below with details in order to illustrate it only. Modifications within the spirit and scope of the invention, set forth in the appended claims, will be readily apparent to a person skilled in the art. As used here, terminology and abbreviations have their usual meaning, for example, "cps" refers to centipoises; "aqueous gel" refers to viscous lotion / water compositions typically having at room temperature a viscosity greater than about 500 cps and typically above about 1,000 cps at room temperature. Preferred lotion compositions form gels of more than 1,500 cps at room temperature as shown in Table 2 below. The invention relates, in part, to a substrate treated with an anhydrous microemulsion lotion which is in a substantially liquid state at room temperature. For the purposes of the present invention, the temperature The environment is a temperature from about 20 ° C to about 25 ° C. The lotion lotion formula of the present invention is subjected to an in situ phase change from a liquid state to a semi-solid state, finely divided, uniformly dispersed upon entering. in contact with the substrate, for example, the fibers of the fabric. This property is important to avoid migration of the liquid lotion on the substrate or in the package, and to improve the lubricant, soft, non-greasy feel of the lotion substrate. The lotion on the substrate is easily transferred to the user's skin by friction with rubbing, body heat and addition of water in order to offer the benefits to the surface of the skin. In addition, this lotion formula is also known as "cold" lotion since it is in a liquid state at room temperature. The term "hot" or "cold" lotion refers to whether the shape of the lotion is "hot" or "liquid" solid at room temperature and the application temperature of the lotion is either "hot" or "hot". "cold" room temperature. The application of a cold lotion does not require the complicated and expensive equipment of heated supply. On the contrary, the lotion can be easily applied through any available technology such as spraying, printing, coating, extrusion or other techniques. The microemulsion or "cold" lotion contains a non-polar emollient or external continuous polar, a non-polar emollient or internal discontinuous polar, a surfactant and a mixture of co-surfactants of fatty alcohols. The lotion may also contain optional ingredients, including plant extracts, perfumes and a medicinal agent. The lotion of the invention mitigates handling / application problems associated with a "hot" lotion and improves the softness of the product and the absorbency of the substrate treated with the lotion. This is achieved by the "cold" hydrophilic, anhydrous lotion present in the liquid state at room temperature, which can be applied to the substrate without heating equipment. The lotion may present a phase change in itself from a liquid form to a semi-solid form upon contact with the tissue fibers which, when loaded, prevent the free flow and migration of the lotion. In addition to these advantages compared to a "hot" lotion, the lotion product of the present invention also offers a lubricating, mild, non-greasy feel, a smooth and effective cleansing, skin healing and moisturizing benefit to the user's skin . In addition, the lotion composition may incorporate typical cosmetic additives, preservatives and antibacterial agents regardless of the water solubility of the additive. Finally, the products of paper handkerchief For the face made from the "hot" lotion are usually not recommended to clean transparent materials such as glasses, because the "hot" lotion leaves a translucent or opaque spot. The present substrates treated with the "cold" lotion do not have this drawback. The present invention relates, in part, to a substrate treated with an anhydrous microemulsion lotion, which is in the liquid state at room temperature. The composition preferably includes four basic components: a polar emollient, a non-polar emollient, a co-surfactant, and a non-ionic surfactant. Preferred polar emollients include a polyhydroxy emollient. Preferred polyhydroxy emollients include propylene glycol, glycol, glycerol, sorbitol, diethylene glycol, methylene glycol, polypropylene glycol, polyethylene glycol, and the like. Preferred non-polar emollients include an aromatic or linear ester, Guerbet ester, mineral oil, squalane, squalene, liquid paraffin and the like. The polar or non-polar emollient is either in the continuous external phase or in the discontinuous internal phase of the microemulsion. Preferred co-surfactants include fatty alcohols. Preferred fatty alcohols include C 2 -C 8 fatty alcohols, behenyl alcohol, isocetyl alcohol, and iso-stearyl alcohol. Preferred nonionic surfactants include PEG-20 methyl glucose sesquistearate, PPG-20 methyl glucose ether, PPG-20 methyl glucose ether distearate, PEG-20 methyl glucose distearate, PEG-120 methyl glucose dioleate, ethoxylated methyl glucose having from about 10 to about 20 repeated ethoxy units, and the like. The compositions of the present invention are preferably selected to be within the microemulsion region of a given formulation. All percentages, proportions and ratios between the ingredients within the compositions of the present invention are determined by the microemulsion region of a ternary phase diagram of the polar emollient / non-polar emollient / co-surfactant / nonionic surfactant formulation ( PE / NPE / COS / NIS). Outside the microemulsion region on the low percent side of the polar or non-polar emollients, a solid or semi-solid region is preferably present (see Figure 1). A microemulsion is thermodynamically stable and essentially transparent in the visible region of the spectrum, which typically indicates that the particle size diameter is preferably less than about 0.1 miera. When the particle size diameter is greater than about 3,200 A (approximately 0.32 microns), the liquid is no longer considered a microemulsion but is a emulsion that can often have a cloudy appearance and be thermodynamically unstable. The micelle structure of a microemulsion is either a "direct" type (head out / tail inside) or a "reverse" type (head in / tail out). The liquid microemulsion increases the surface area of the lipophilic constituent in such a way that it contributes significantly to the usefulness of the present composition in pure form. Fluidity in the surface of the skin, small particle size, high surface area and high hydrophilic character, are highly desirable properties for cleaning purposes either when the substrate is used per se or when lotion products are rehumidified with water. Any combination or proportion of these ingredients that produces a microemulsion can be used. An important aspect of this invention is that when the liquid lotion comes into contact with the fibers or non-woven substrate, it is subjected to a phase change in situ from a liquid form to a liquid form to a semi-solid or solid form. This change is obtained when the fibers of the substrate tissue surface absorb the continuous external phase of the microemulsion, while the continuous external phase of the microemulsion can be a non-polar or polar emollient. Accordingly, the percentage of the external phase of the microemulsion within the composition is reduced, which results in an increase in the percentage of the internal phase of the microemulsion. This change in micro-emulsion composition can be seen in Figure 1. The original microemulsion is in substantially liquid form at room temperature and is indicated by point A, which is located within the microemulsion region in Figure 1. A Once the percentage of the internal microemulsion layer rises and the overall composition of the microemulsion changes, the phase of the microemulsion changes. The new state of the microemulsion is indicated by points B and C located in the semi-solid region of Figure 1. This unique and special feature of phase change represents an advantage of the invention, in contrast to the lotion of the prior art, both in the process of application and in product performance. In the application process, the lotion of the present invention uses a simple and inexpensive technology compared to the prior art since it is anhydrous and substantially liquid at room temperature. In contrast, most lotions used to treat paper handkerchief or nonwoven substrate in the prior art are in semisolid or solid form at room temperature, which requires heating equipment to provide the lotion to the substrate. In addition, any available supply technology can be easily used for the application of the lotion of the present invention without heating equipment, such as for example a spray coating with atomization of air, a brush applicator, a curtain-type applicator, and a direct or out-of-phase engraving application. The cleaning of the production line during or after the lotion application process due to the accumulation and solidification of lotion on the conveyor roller is also a major problem with "hot" type lotions. This problem is minimized with the lotion of the present invention; and in addition, in the conversion line, the liquid lotion can act as a lubricant and prevent adhesion of "stickiness" (sticky deposits from the recycling fiber base sheet) on the embossing rolls to improve the conversion process and the production speed. The microemulsion is in the liquid state at room temperature, but when it comes into contact with the paper or the non-woven substrate, the lotion phase changes to a semi-solid form. This unique property provides the advantages of a liquid "cold" lotion that relate primarily to a "hot" type lotion, such as: (1) retention of a greater amount of lotion on the substrate surface; (2) impeding the penetration of the lotion into the tissue without requiring an immobilizing agent; (3) reduction of the amount of applied lotion required to improve product performances; and (4) reducing the impact of the lotion on the physical properties of the tissue. In addition, if necessary, a higher level of addition of the present lotion on the substrate can be applied compared to the "hot" type lotion due to the liquid form of the "cold" type lotion at room temperature. In this case, the hydrophilic nature of the "cold" lotion product will remain which results in better cleansing or enhanced skin care benefits, in contrast to the "hot" hydrophobic lotion. These cold lotions do not have the usual drawbacks of hot lotions with which it has been observed that the use of an excessive amount of "hot" lotion can cause the rigidity of the product. The ability of the continuous external phase to include either polar or non-polar components offers advantages to the present invention. Both polar and non-polar emollients contribute to the ability of the present invention to allow a wide range of compatibility with various additives such as preservatives, antibacterial agents, natural therapeutic oils, softening agents, whether or not they are soluble in the polar emollient or not. polar. In other words, the formulations of the present invention can be designed to effectively promote numerous benefits for the consumer. For example, in a rag product containing a high level of addition (100% to 300%) of the present lotion for cleaning oil-based grease or dirt on the skin, the preferred lotion composition includes an external emollient phase. polar / internal phase of non-polar oil / hydrophilic surfactant with fatty alcohol C? 4 a Cie co-surfactant. After the application of the microemulsion on the cellulosic substrate, the percentage by weight of the external phase polar emollient is preferably very low compared to the non-polar internal phase emollient since the polar phase is strongly absorbed by the cellulosic fibers. In the cleaning of oily skin surfaces, the product releases the non-polar emollient (as vehicle) and the non-ionic surfactant. This combination emulsifies the dirt based on oil or grease on the skin and, by encapsulating it in the structure of micelles after cleaning, takes it towards the internal phase of the cleaning formulation without leaving a non-polar oil phase in the skin . The formulation is very suitable for cleaning oils. We prefer that the external phase be polar since the grease or oil pass in the non-polar phase in the rag and can therefore be removed. This microemulsion with a polar external phase is considered better for cleaning oil from the surface of the skin than the use of an external phase lotion formulation. non-polar oil emollient / polar emollient internal phase / non-ionic surfactant plus co-surfactant since lotions having a non-polar continuous phase micelle structure come into contact with the skin with the oily phase, therefore the external phase does not Polar only dissolves the contaminant and, therefore, can leave both the oil-based contaminant and the non-polar oil phase on the surface of the skin. Accordingly, products treated with formulations having continuous non-polar phases are less desirable for removing oils and fatty materials since the non-polar liquid is often left on the skin after cleaning. Conventional liquid lotions for a tissue paper substrate (oil in water emulsion) are well known in the art, but generally have 70-80% water in the formula. The water in the lotion formula is undesirable for the subsequent treatment of the tissue product because: (1) it limits the amount of lotion that can be applied to the substrate because the lotion has a low percentage of solids; (2) the great negative impact on the physical properties of the product and the problems encountered in the treatment line due to water rewet and paper weakening; and (3) the need to install an oven, or other drying device, in the treatment line for water removal in the substrate. The present formula is anhydrous but still retains the ability to incorporate water-soluble additives in the polar phase, plus the easy addition of oil-soluble additives in the non-polar phase of the lotion. This ability is also an advantage of the "cold" lotion compared to the "hot" lotion. The incorporation of water-based additives into a "hot" lotion is very difficult due to the phase separation and loss of even distribution of the additive in the lotion, either before or after application in the product substrate. The water content in the "hot" lotion of up to 10% or 15% can eliminate the problem of phase separation, but the control and maintenance of the water content in a high temperature lotion formulation (approximately 75 ° C) at approximately 90 ° C) during application can be a difficult task. This disadvantage is avoided through the "cold" lotion of the present invention. The invention relates to a napkin, towel or tissue, optionally with wet strength, or cloth or non-woven material, such as what is used for diapers, incontinence pad and menstrual pad treated with a lotion. not greasy feeling. The lotion has the effect of causing the treated substrate to have a non-greasy feel, reduces friction and irritation when the substrate is applied to the skin, and it provides a lubricating sensation. The skin care benefits of the lotion substrate are expressed as whether the invention is used in the dry state or pre-wetted with water. The lotion may optionally include a therapeutic amount of a medicinal agent. Medicinal agents include drugs, antipathogenic agents, antimicrobial agents, antibacterial agents, antiviral agents, disinfectants, analgesics, other types of drug with suitable medicinal properties, and the like. For example, an antibacterial agent may be present in an amount from about 0.01% to about 10%, preferably from about 0.05% to about 5%, of the lotion. Suitable antimicrobial agents include agents effective against human pathogens, such as for example Escherichia coli, Staphylococcus a ureus, Salmonella chloreraesuis, Salmonella typhi, Pseudomonas aeruginosa, Pseudomonas cepacia, and Candida species, including albicans. Specific antimicrobial agents suitable for use in the lotion of the invention include 2, 4, 4 '-trichloro-2' -hydroxydiphenyl ether (triclosan), 3,4,4'-trichlorocarbanilide (triclocarban), 3, 4, 4 ' -trifluoromethyl-4,4'-dichlorocarbanilide (cloflucarban), 5-chloro-2-methyl-4-isothiazolin-3-one, iodopropynyl-butyl carbamate, 8-hydroxyquinoline, 8-hydroxyquinoline citrate, sulfate 8-hydroxyquinoline, 4-chloro-3,5-xylenol (chloroxylenol), 2-bromo-2-nitropropan-l, 3-diol, diazolidinylurea; butoconazole; nystatin; terconazole; nitrofurantoin; phenazopyridine; acyclovir; clortrimazole; chloroxylenol; chlorhexidine; Chlorhexidine gluconate; miconazole; terconazole; Butylparaben; ethylparaben; methylparaben; methylchloroisothiazoline; methylisothiazoline; a mixture of 1,3-bis (hydroxymethyl) -5,5-dimethylhydantoin and 3-iodo-2-propynyl butyl carbamate; oxyquinoline; EDTA; Tetrasodium EDTA; p-hydroxyl benzoic acid ester; alkyl pyridinium compounds; quaternary ammonium compounds, such as, for example, coconut chloride phosphatidyl PG-dimonium; mixtures thereof; and similar. Other preferred antimicrobial agents include substituted N-alkyl imidazoline derivatives disclosed in DE Walker North American Patent No. 4,078,071, issued March 7, 1978, which is incorporated herein by reference in its entirety. An antiviral agent may be present in an amount from about 0.025% to about 5%, preferably from about 0.05% to about 2.5% of the lotion. Suitable antiviral agents include those that are effective or at least retard Corona virus, Picorna virus, Rhino virus, Herpes simplex, Genital herpes, Cold sore, Respiratory syncytial virus (RSV), For influenza, Cytomegalovirus, Adenovirus, Condyloma and certain conditions of Synergistic diseases that may involve a virus and a protozoan or a virus and any harmful enzyme, for example, protease, lipase and amylase, which cause a compromised skin as the precursor state of a viral infection. Specific antiviral agents suitable for use in the lotion of the present invention include bioflavonoids such as hesperitin, naringin, catechin and certain selected amino acids of leguminous origin such as for example L-canavanine and an analogue of L-arginine; dicarboxylic acids such as malonic, glutaric, citric, succinic, and diglycolic acid; alpha-hydroxycarboxylic acid such as for example D-galacturonic acid of Sterculia urens; neem seed oil (Azadirachta indica) in its non-denatured form; sandalwood oil (Santalum album L.) in its non-denatured form. Optionally, the antiviral agent could be mixed with at least about 50% by weight of the antiviral agent of a protease inhibitor such as zinc oxide or other suitable zinc salt. The lotion may optionally include a fragrance. The fragrance may be present in an amount from 0.01% to about 2%. Suitable fragrances include volatile aromatic esters, non-aromatic esters, aromatic aldehydes, non-aromatic aldehydes, aromatic alcohols, non-aromatic alcohols, heterocyclic chemical flavors, and natural floral fragrances, such as for example florescence, carnation, gardenia, geranium, lily, hawthorn, hyacinth and jasmine. The lotion may optionally include natural or synthetic powder such as talc, mica, boron nitride, silicone, or mixtures thereof. The substrate fabric of the present invention optionally includes a wet strength agent. The resistance agent includes wet, temporary and permanent resistance agents. Suitable wet strength agents include dioxal; glutaraldehyde, unchanged chemical moieties selected from the group consisting of dialdehydes, polyols containing aldehydes, polymers containing unchanged aldehydes, and cyclic ureas and mixtures of the foregoing, and cationic starch containing aldehyde; mixtures of polyvinyl alcohol and salts of multivalent anions such as, for example, zirconium ammonium carbonates or boric acid; glyoxalated polyacrylamide; polyamide-epichlorohydrin, polyamine-epichlorohydrin; urea-formaldehyde; melamine-formaldehyde; polyethyleneimine; and latex emulsions. The lotion composition may include other optional components typically present in lotions of this type. These optional components include a botanical extract, such as aloe extract, avocado oil, basil extract, sesame oil, olive oil, jojoba oil, chamomile extract, eucalyptus extract, mint extract, as well as animal oils such as emu oil, cod liver oil, orange clock oil, oil of mink and the like. The lotion of the present invention may optionally also include a humectant. Moisturizers are hygroscopic materials with a double wetting action that includes water retention and water absorption. Moisturizers prevent the loss of moisture from the skin and help attract moisture from the environment. Preferred humectants include glycerol, hydrolyzed silk, ammonium lactate, hydrolyzed silk with hydroxypropyltrimonium, hydroxypropylchitosan, wheat protein hydrolyzed with hydroxypropyltrimonium, lactamidopropyltrimonium chloride, and hydrolyzed silk ethyl ester. The botanical extract, animal oil or humectant is preferably present in an amount of less than about 3% when used in the base formulation of the lotion. Additional optional components include a skin refreshing agent such as water encapsulated in oil, eucalyptus oil and menthol oil. All of these optional materials are well known in the art as additives for such formulations and can be employed in appropriate amounts in the lotion compositions of the present invention by part of the people with knowledge in the matter. The fabric of the present invention can be any suitable cellulose substrate fabric, optionally with wet strength, and may optionally include synthetic fibrous material such as meltblown polyethylene, polypropylene, polyethylene copolymer and, in addition to cellulosic fibers. The substrate can also be embossed. The present invention includes a fabric of cellulosic fibers treated on at least one side thereof, preferably in an amount of from about 0.1% to about 25%, more preferably from about 0.5% to about 20% by weight of the fiber fabric dried with the lotion of the present invention. The cellulosic substrate can be prepared in accordance with conventional processes (including TAD, CWP and variants thereof) known to the person skilled in the art. The substrate can be creped or not creped. The lotion can be applied on the substrate in accordance with conventional methods of application known to those skilled in the art. Examples Formulations of the anhydrous lotion were prepared in the which components, their proportions and the conditions selected to provide microemulsion subject to in situ phase change upon contact with a cellulosic substrate were varied as shown in the following examples. In the preparation of each formulation the following general procedure was used. Propylene glycol in polar phase was mixed with surfactant and co-surfactant in a vessel heated to a temperature of about 60 ° C to about 70 ° C until complete melting of the chemicals. The non-polar oil phase was added to the mixture with moderate agitation for about 10 minutes, then it was cooled to room temperature. At this point, the lotion was in clear liquid form and ready to be applied on the substrate. The microemulsion formed spontaneously without the need for a high-cut mechanical device and is indefinitely stable. Examples 1-7 Examples 1 to 7 were prepared in accordance with the present invention. These lotion formulas were liquid at room temperature, transparent, very stable and according to the proportions of lotion ingredients were within the microemulsion region of phase diagrams as shown in Figure 1 which is a partial phase diagram of the composition from example 1. Surprisingly, the lotion of the present invention is characterized in that it has a good feeling to the touch and a non-greasy manual sensation which is believed to be due to the particle size of the microemulsion which is too small to be detected in the oil phase by the tip of the fingers . Table 1 (1) Finsolv TN: C 2 -C 5 alkyl benzoate ester from Finetex Inc. (2 > Carnation: mineral oil from Witco Corp. (3) Lambert CE 2000 - tri-octilodecyl-citrate (Guerbet ester) from Lambert Technologies. () Kalcol 1618: 50/50 blend of cetyl alcohol (C16) and alcohol stearilic (C18) from Kao Corp. <5) Glucam P-120 Disterate: PEG-20 methyl glucose distearate from Amer-chol. 161 Glucamate SSE-20: PEG-20 methyl glucose sesquistearate from Amer-chol. Example 8 The lotion prepared in Example 1 was applied on a paper tissue base sheet at an addition level of 5%, and then converted into a two-fold paper tissue product. The product was tested for the amount of lotion transferred to the skin. The results were compared with commercially available lotion paper tissues by comparing the reflection of the residual cold lotion light on glass in relation to the light reflection of two other products. The diffusion of light caused by the lotion that appeared on the glass microscope stage was measured by using UV / visible photometer spectrum in the wavelength region from 700 nm to 400 nm. The lotion was transferred to the stage by holding it between two layers of tissue paper with lotion for 30 seconds and then rubbing the handkerchief. paper on the stage 20 times in 15 seconds. The glass plate stained with the lotion was placed in the sample beam of a UV / visible dual-beam spectrometer to measure the light scattering. The results show that the diffusion of the light caused by the lotion spread on the platen rubbed with the tissue paper treated with the lotion in example 1 had an appearance identical to the control (untreated paper tissue). However, the two commercially available lotion face paper tissue products tested produced a significant amount of light scattering compared to the tissue with the lotion of the present invention. In fact, the containers for these commercial products specifically indicate "not recommended for cleaning glasses". In addition, from the laboratory test result, the amount of lotion transferred by the lotion substrate of the present invention to the skin was average at approximately 4.2 mg / cm2. The lotion substrate product of the present invention was able to transfer lotion to the skin to enhance the skin care benefits, while also being able to "clean spectacles and maintain a clear view". These properties of the present invention represent significant advantages compared to paper tissues for Face with lotion of the prior art.

Anhydrous emulsion compositions of the present invention have numerous attributes which make them already especially suitable for paper towels. On the one hand, anhydrous microemulsions form low viscosity aqueous microemulsions with relatively small amounts of water such that a lotion immobilized on the substrate can be restored to be easily transferable when humidified or mixed with water. Accordingly, when in contact with the wet hands of the user of a paper towel, for example, the lotion is easily transferred from the towel to the wearer's skin. Another unique feature of the invention is that lotion emulsions can form glutinous gels with water as the amount of water mixed with the lotion rises. Glutinous gels are generally more viscous and firm than liquids, and are therefore more desirable as hand lotions. Details of these characteristics appear in examples 9-16 below. Examples 9-16 The composition of Example 1 was mixed with water and tested for viscosity using a Brookfield Digital Viscometer at a temperature of 23 ° C (73 ° F). Examples 9, 10, 11 and 16 were tested with a spindle No. 2 while Examples 12. 13, 14 and 15 were tested with a spindle No.

. Details of the composition and testing conditions appear in Table 2 below. Table 2 - Aqueous Phase Properties It can be seen in Table 2 that the water / emulsion mixtures remained in microemulsion to a water concentration comprised between 10% and 15% by weight of the composition (Examples 9-12). At a water concentration of 15 & amp;, the lotion emulsion became a viscous gel, which became even more viscous with the addition of additional water. At a water concentration of 20%, the composition was an elastic gel having a viscosity of 22,000 cps, making it difficult to measure the viscosity. At a water concentration of 30% (Example 14), the gel exhibited a certain opacity and appeared to have a certain crystalline structure with an almost brittle appearance. Due to the difficulty of measuring the viscosity as well as due to the elastic and adhesive properties of the elastic gel of Example 13, the actual viscosity difference between Examples 13 and 14 may be lower than indicated in Table 2. At a concentration 50% water by weight, viscosity It fell dramatically and the composition appeared to be a turbid, viscous, relatively translucent gel. While the viscosities of Examples 12 and 15 were similar, the composition of Example 14 exhibited considerably higher turbidity. At a water concentration of 80%, the viscosity was low again; however, the composition no longer had a clear appearance but presented the form of a relatively cloudy emulsion. The phase behaviors of the mixtures of Table 2 are illustrated in the partial phase diagram of Figure 2 where it can be seen that Examples 9, 10 and 11 are within the microemulsion region of the phase diagram. Examples 12, 13, 14 and 15 are in "semi-solid" form while Example 16 is a two-phase liquid. Example 17 and Comparative Example A Further features of the present invention that are highly desirable include a WAR delay that promotes the transfer of lotion to the skin and an antimicrobial action of the paper towel. These characteristics are appreciated from the following comments. A towel base sheet was prepared using 100% Douglas-fir Kraft fiber in the form of a fabric crepe / Yankee drying process of the kind disclosed in co-pending US Patent Application No. 60 / 693,699, entitled "Fabric-Creped Sheet for Dispensing", filed on June 24, 2005 (No. of Attorney's Record 20079; GP-05-10) whose disclosure is incorporated herein by reference in its entirety. On the base sheet a 2.54 centimeter (1 inch) strip lotion was applied along the machine direction (alternating with 2.54 centimeter (1 inch) bands of no-lotion towel) using a Dynatec ™ applicator of the kind observed in US Patent Nos. 5,904,298; 5,902,540; and 5,882,573, the disclosures of which are incorporated herein by reference. The lotion formulation of Example 1 was used which additionally contained 2% by weight of an antimicrobial compound of triclosan, 2,4-trichloro-2-hydroxydiphenyl ether. Additional details are presented in Table 3 below. The towel was treated for antimicrobial properties by placing a sample disc moistened with a towel in a petri dish on inoculated agar. The antimicrobial properties are classified as "negative" if microbial contamination is observed on or on the towel after incubation and "positive" if a ring is observed around the test sample indicating that the microbial growth was inhibited by the towel. The results of the antimicrobial test also appear Table 3. Table 3 - Antimicrobial Properties of the Towel It is observed in Table 3 that the antimicrobial lotion was effective against Staphylococcus aureus, E. coli and Salmonella sps. It is also observed that, with the absorption capacity (SAT) of the control towel and the towel with lotion remaining substantially the same, the WAR times, or absorption rates were considerably lengthened, possibly due to gel blocking; which is consistent with the data in Table 2 above. Higher WAR values are generally not desirable; However, the glutinous gel sensation and the initial "humidity" experienced by the user of the towel is a positive consequence, compensating the lower absorption rates measured and encouraging a greater drying action in such a way that the antimicrobial lotion is more effective to prevent or improve pollution. The apparent gel block also appeared to increase the DC wet tension, a common source of towel failure. While the invention has been described in connection with numerous examples, modifications to these examples within the spirit and scope of the present invention will be readily apparent to those skilled in the art. Taking into account the previous discussion, the relevant knowledge of the technique and the references that include co-pending requests discussed above, whose disclosures are incorporated herein by reference, it is considered that an additional description is not necessary.

Claims (31)

1. CLAIMS 1. A substrate treated with a lotion suitable for a towel or tissue, comprising: (a) a cellulosic fabric; and (b) a lotion emulsion placed on the fabric, the lotion emulsion includes a polar emollient and a non-polar emollient as well as a surfactant composition comprising a non-ionic surfactant; (c) wherein the lotion emulsion is in a substantially liquid state at room temperature; (d) the emollients and the surfactant composition are selected such that the lotion emulsion is immobilized in the tissue in a semi-solid or solid state; and (e) wherein the lotion emulsion can form an aqueous gel upon contact with water.
2. 2. The lotion treated substrate according to claim 1, wherein the polar emollient includes a polar polyhydroxy emollient selected from propylene glycol, glycol, glycerol, sorbitol, diethylene glycol, methylene glycol, polypropylene glycol and polyethylene glycol.
3. 3. The lotion treated substrate according to claim 1, wherein the non-polar emollient is selected from an aromatic or linear ester, Guerbet ester, mineral oil, squalane, squalene and paraffin. liquid
4. 4. The lotion treated substrate according to claim 1, wherein the lotion emulsion consists predominantly of emollient and surfactant.
5. 5. The lotion treated substrate according to claim 1, wherein the surfactant composition comprises a non-ionic surfactant selected from PEG-20 methyl glucose sesquistearate, PPG-20 methyl glucose ether, PPG-20 methyl glucose ether distearate, PEG- Methyl glucose distearate, PEG-120 methyl glucose dioleate and ethoxylated methyl glucose having from about 10 to about 20 repeating ethoxy units.
6. 6. The lotion treated substrate according to claim 1, wherein the surfactant composition comprises a co-surfactant.
7. 7. The lotion-treated substrate according to claim 6, wherein the co-surfactant is a fatty alcohol selected from grades C 2 -C 8 alcohol, behenyl alcohol, isocetyl alcohol and isostearyl alcohol.
8. 8. The lotion treated substrate according to claim 1, wherein the lotion emulsion is an anhydrous microemulsion.
9. 9. The lotion treated substrate according to claim 1, wherein the fabric is treated with the lotion emulsion in an amount of about 0.1% a about 25% by weight of the dried fiber.
10. 10. The lotion treated substrate according to claim 1, wherein the fabric is treated with the lotion emulsion in an amount of about 0.5% to about 20% by weight of the dried fiber.
11. 11. The lotion treated substrate according to claim 1, wherein the lotion emulsion further comprises an antimicrobial agent.
12. 12. The lotion treated substrate according to claim 11; comprising an antimicrobial agent selected from: 2,4,4'-trichloro-2'-hydroxydiphenyl ether; 3,4,4'-trichlorocarbanilide; 3,4,4'-trifluoromethyl-4,4'-dichlorocarbanilide; 5-chloro-2-methyl-4-isothiazolin-3-one; iodopropynylbutylcarbamate; 8-hydroxyquinoline; 8-hydroxyquinoline citrate; 8-hydroxyquinoline sulfate; 4-chloro-3,5-xylenol; 2-bromo-2-nitropropan-l, 3-diol; butoconazole; nystatin; terconazole; nitrofurantoin; phenazopyridine; acyclovir; clortrimazole; chloroxylenol; chlorhexidine; Chlorhexidine gluconate; miconazole; terconazole; Butylparaben; ethylparaben; methylparaben; methylchloroisothiazoline; methylisothiazoline; and mixtures thereof.
13. 13. The lotion treated substrate according to claim 1, wherein the lotion emulsion further comprises an additive selected from the group consisting of of fragrances, preservatives, medicinal agents, moisturizers, natural therapeutic oils, botanical extracts, natural or synthetic powders, and softening agents.
14. 14. The lotion treated substrate according to claim 13, wherein the additive comprises a fragrance.
15. 15. The lotion treated substrate according to claim 1, wherein the fabric comprises a wet strength agent.
16. 16. A substrate treated with a suitable lotion for a towel or tissue, comprising: (a) a cellulose fabric; (b) a substantially liquid anhydrous microemulsion at room temperature immobilized in the tissue in a semi-solid or solid state; (c) wherein the anhydrous microemulsion consists essentially of a polar emollient, a non-polar emollient, and a surfactant composition comprising a non-ionic surfactant; and (d) wherein also the anhydrous microemulsion can form an aqueous microemulsion upon contact with water.
17. 17. The lotion treated substrate according to claim 16, wherein the anhydrous microemulsion it comprises a polar polyhydroxy emollient selected from propylene glycol, glycol, glycerol, sorbitol, diethylene glycol, methylene glycol, polypropylene glycol and polyethylene glycol.
18. 18. The lotion treated substrate according to claim 16, wherein the anhydrous microemulsion comprises a non-polar emollient selected from aromatic or linear ester, Guerbet ester, mineral oil, squalane, squalene and liquid paraffin.
19. 19. The lotion treated substrate according to claim 16, wherein the anhydrous microemulsion comprises a non-ionic surfactant selected from PEG-20 methyl glucose sesquistearate, PPG-20 methyl glucose ether, PPG-20 methyl glucose ether distearate, PEG- Methyl glucose distearate, PEG-120 methyl glucose dioleate and ethoxylated methyl glucose having from about 10 to about 20 repeating ethoxy units.
20. 20. A substrate treated with a lotion suitable for a towel or tissue, comprising: (a) a cellulosic fabric; (b) a substantially liquid anhydrous microemulsion at room temperature immobilized in the tissue in a semi-solid or solid state; wherein the microemulsion comprises a polar emollient, a non-polar emollient, a co-surfactant and a non-ionic surfactant.
21. 21. The lotion treated substrate according to claim 20, wherein the co-surfactant is a fatty alcohol.
22. 22. The lotion treated substrate according to claim 21, wherein the fatty alcohol is selected from C 2 -C 8 fatty alcohols, behenyl alcohol, isocetyl alcohol and isostearyl alcohol.
23. 23. A method for making a lotion treated substrate suitable for a towel or tissue, comprising: (a) preparing a lotion emulsion including a polar emollient and a non-polar emollient as well as a surfactant composition comprising a non-polar surfactant. ionic; (b) treating a cellulosic fabric with the lotion emulsion; wherein the emollient composition and the surfactant composition are selected such that the lotion emulsion is immobilized on the towel fabric in a semi-solid or solid state, and wherein the lotion emulsion can form an aqueous gel upon entering contact with water. The method for manufacturing a lotion treated substrate according to claim 23, wherein the lotion emulsion is applied to the fabric by spraying or printing. 25. The method for making a substrate treated with lotion of according to claim 23, wherein the emollient composition comprises a polar polyhydroxy emollient selected from propylene glycol, glycol, glycerol, sorbitol, diethylene glycol, methylene glycol, polypropylene glycol and polyethylene glycol. 26. The method for making a lotion treated substrate according to claim 23, wherein the emollient composition comprises a non-polar emollient selected from an aromatic or linear ester, Guerbet ester, mineral oil, squalane, squalene and liquid paraffin. The method for making a lotion treated substrate according to claim 23, wherein the surfactant composition comprises a nonionic surfactant selected from PEG-20 methyl glucose sesquistearate, PPG-20 methyl glucose ether, PPG-20 methyl glucose ether distearate, PEG-20 methyl glucose distearate, PEG-120 methyl glucose dioleate and ethoxylated methyl glucose having from about 10 to about 20 repeating ethoxy units. The method for manufacturing a lotion treated substrate according to claim 23, wherein the surfactant composition comprises a co-surfactant selected from C 2 -C 8 fatty alcohols, behenyl alcohol, isocetyl alcohol and isostearyl alcohol. 29. The method for manufacturing a lotion treated substrate according to claim 23, wherein the emulsion of Lotion also comprises an additive selected from the group consisting of preservatives, medicinal agents, moisturizers, fragrances, natural therapeutic oils, botanical extracts, natural or synthetic powders, and softening agents. 30. The method for manufacturing a lotion treated substrate according to claim 23, which comprises treating the cellulosic fabric with lotion emulsion in an amount from about 0.1% to about 25% by weight of the dried fiber. 31. The method for manufacturing a lotion treated substrate according to claim 23, which comprises treating the cellulosic fabric with a lotion emulsion in an amount of about 0.5% to about 20% by weight of the dried fiber.