Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
  • A61Q17/00—Barrier preparations; Preparations brought into direct contact with the skin for affording protection against external influences, e.g. sunlight, X-rays or other harmful rays, corrosive materials, bacteria or insect stings
  • A61Q17/005—Antimicrobial preparations
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
  • A61K8/0208—Tissues; Wipes; Patches
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/92—Oils, fats or waxes; Derivatives thereof, e.g. hydrogenation products thereof
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
  • A61Q19/00—Preparations for care of the skin

Definitions

• Absorbent paper products such as hand towels are commonly used to absorb fluids applied to the skin of a user during hand washing.
• the paper products are designed to absorb fluids from the skin and leave the skin dry.
• the soap ingredients often used to cleanse a person's hands or skin can remove oils, lipids, and natural skin conditioners and moisturizers from the stratum corneum of the person, leaving the skin excessively dry and subject to various skin problems, such as erythema, scales, flakes, and fissures.
• many people commonly wash their hands in environments susceptible to various diseases caused by the spread or growth of microbes, such as bacteria and viruses.
• the present invention is directed to a paper product that can dry and condition the skin of a user.
• a lotion composition is applied to the paper product that contains a variety of components.
• the add-on level of the lotion composition is between about 1 % to about 10% by weight of the paper product.
• the lotion composition can generally contain a variety of components.
• the lotion composition contains an oil component in an amount up to about 70% by weight of the lotion composition.
• the oil component can include a variety of different ingredients, such as oils, oil-soluble skin-conditioning agents, etc.
• petrolatum can be used as an oil.
• caprylic/capric triglyceride may be utilized as an oil-soluble skin conditioning agent.
• the lotion composition also includes a solid component (i.e., a solid at or below about 25°C) in an amount up to about 60% by weight of the lotion composition.
• the solid component can include a number of different ingredients.
• the solid component can include one or more fatty alcohols, such as cetyl alcohol, stearyl alcohol, cetearyl alcohol, arachidyl alcohol, behenyl alcohol, or combinations thereof.
• the solid component may also include one or more waxes, such as natural waxes, petroleum waxes, silicone waxes, synthetic waxes, or combinations thereof.
• the lotion also includes an optional water-soluble skin conditioning component in an amount up to about 80% by weight of the lotion composition.
• the water-soluble skin conditioning component can include a humectant, such as glycerin.
• an optional emulsifier component can also be utilized in conjunction with the water-soluble skin conditioning component in an amount up to about 35% by weight of the lotion.
• the emulsifier component can include one or more emulsifiers that have an HLB number less than about 5.
• an emulsifier is glyceryl stearate.
• a process for producing a paper product for drying and conditioning the skin of a user includes forming a fibrous web, through-drying the web to remove water therefrom, and thereafter treating the dried web with a lotion composition such that the lotion has an add-on level of between about
• the lotion composition can be printed onto the paper web.
• the lotion composition can also be sprayed onto the paper web.
• any given range presented herein is intended to include any and all lesser included ranges.
• a range of from 45-90 would also include 50-90; 45-80; 46-89 and the like.
• the range of 95% to 99.999% also includes, for example, the ranges of 96% to 99.1%, 96.3% to 99.7%, and 99.91 to 99.999%.
• the present invention is directed to a paper product that contains a lotion useful for treating a person's skin.
• the lotion contains an oil component and a solid component, an optional water-soluble skin conditioning component, an optional emulsifier component, and other various ingredients, such as other skin-conditioning agents, anti-microbial agents, etc.
• the particular selection and amount of ingredients utilized in the lotion of the present invention can provide a synergistic effect when applied to a paper product.
• the lotion of the present invention can be applied at relatively low add-on levels to a paper product such that the resulting paper product can remain absorbent.
• the paper product of the present invention can dry a person's skin after washing, while simultaneously imparting certain benefits to the skin, such as inhibiting microbial growth, skin disease, skin dryness, etc.
• Paper products made in accordance with the present invention can include various types of products, such as towels, wipes, napkins, facial and bath tissue, and the like.
• the paper product can generally be produced from paper webs having one or multiple layers.
• the paper product can contain one or multiple plies where each ply can contain one or more layers.
• the basis weight of the paper products can vary dependent on the particular application. In some embodiments, for example, the paper product can have a basis weight from about 1 to about 50 pounds per 2,880 square feet (i.e., ream), and in some embodiments, between about 5 to about 45 pounds per square ream.
• paper towels can sometimes be formed to have a basis weight of from about 10 to about 45 pounds per ream, and in some embodiments, between about 20 to about 30 pounds per ream.
• the paper product of the present invention is applied with a lotion that contains a variety of components.
• the lotion contains an oil component that contains one or more oils and/or oil-soluble ingredients, such as oil-soluble skin conditioning agents, etc.
• the amount of the oil component in the composition can generally vary.
• the amount of the oil component can be up to 70% by weight of the composition, in some embodiments between about 20% to about 60% by weight of the composition, and in some embodiments, between about 30% about 50% by weight of the composition.
• oils that can be used in the present invention include, but are not limited to, petroleum or mineral oils, such as petrolatum; animal oils, such as mink oil and lanolin oil; plant oils, such as soy sterol, sunflower oil, and avocado oil; and silicone oils, such as alkyl methyl silicones.
• petroleum or mineral oils such as petrolatum
• animal oils such as mink oil and lanolin oil
• plant oils such as soy sterol, sunflower oil, and avocado oil
• silicone oils such as alkyl methyl silicones.
• the use of petrolatum, sunflower seed oil, and/or soy sterol as oils has been determined to be particularly effective in the present invention.
• the amount of oil utilized can be up to 70% by weight of the composition, and in some embodiments between about 10% to about 60% by weight of the composition.
• oil-soluble skin conditioning agents can also be utilized in some embodiments.
• a skin conditioning agent generally refers to any material that can enhance certain properties of the skin, such as by moisturizing the skin, softening the skin, protecting the skin, and the like.
• skin conditioning agents can further moisturize a person's skin to inhibit excessive dryness and various related skin diseases.
• the amount of the oil-soluble skin conditioning agents utilized can be up to 15% by weight of the composition, and in some embodiments between about 1% to about
• oil-soluble skin conditioning agents include, but are not limited to, capric acid, caproic acid, caprylic acid, caprylic/capric mixed acids, caprylic/capric triglyceride (e.g., Crodamol GTCC sold by Croda, Inc.), cholesterol, lauric acid, magnesium stearate, myristic acid, oleic acid, palmitic acid, pentaerythritol, sorbitol, stearic acid, stearols (vegetable), methyl gluceth 20 benzoate, linear primary alkyl esters of benzoic acid, such as C 12 -C 15 alkyl benzoate (e.g., Finsolv® TN sold by Finetex, Inc.), ethoxylated cetyl stearyl alcohol, Finsolv® SLB 101 or SLB 201 (sold by Finitex Corp.), etc.
• caprylic/capric mixed acids e.g., Crodamol GTCC sold by Croda,
• an oil component such as described above, can provide a number of benefits to the lotion composition formed therefrom.
• the ingredients of the oil component can act as moisturizing agents when applied to the skin of a user.
• the ingredients of the oil component can, in some cases, enhance the ability of a user's skin to retain water even after using the paper product. By retaining water, a user's skin will be less prone to becoming excessively dry, as well as being inhibited from developing certain skin problems, such as erythema.
• the ingredients of the oil component can also help to maintain the soft, smooth, and pliable appearance of the skin by remaining on the skin surface or in the stratum corneum to act as a lubricant, to reduce flaking, and to improve the skin's appearance.
• the lotion of the present invention can also contain a variety of other materials.
• the lotion of the present invention also typically contains a solid component that includes one or more ingredients that are a solid at or below about 25°C.
• some solid ingredients that can be utilized in the present invention include, but are not limited to, fatty alcohols, waxes, and the like.
• the amount of the solid component can vary depending on the amount of the oil component utilized.
• the amount of the solid component in the composition can be up to about 60% by weight of the composition, in some embodiments between about 10% to about 50% by weight of the composition, and in some embodiments, between about 15% to about 40% by weight of the composition.
• Other suitable fatty alcohols are described in U.S. Patent Nos. 5,830,487 to Klofta. et al. and 5,871 ,763 to Luu. et al.. which are incorporated herein in their entirety by reference thereto for all purposes.
• the fatty alcohol ingredients can generally be present in various amounts, such as up to about 50% by weight of the composition, in some embodiments between about 5% to about 40% by weight of the composition, and in some embodiments, between about 10% to about 30% by weight of the composition.
• the solid component can also include a variety of wax ingredients.
• suitable waxes include, but are not limited to, natural waxes, such as beeswax and carnauba wax; petroleum waxes, such as paraffin and ceresine wax; silicone waxes, such as alkyl methyl siloxanes; or synthetic waxes, such as synthetic beeswax and synthetic sperm wax.
• the wax ingredients can generally be present within the composition in various amounts.
• the wax ingredients may be present in an amount up to about 20% by weight of the composition, in some embodiments, between about 1% to about 15% by weight of the composition, and in some embodiments, between about 5% to about
• the solid component of the lotion can, in some embodiments, inhibit the ingredients of the oil component from substantially migrating into the interior of the paper when deposited onto the surface of the paper product.
• a greater percentage of the resulting lotion of the present invention is retained on the surface of the paper product where it can contact and transfer to the user's skin to provide various benefits.
• the ingredients of the solid component can also impart a soothing feel to the skin of a user.
• a lower add-on level can be used to deliver the same benefits at a lower cost because of the efficient placement of the composition substantially at the surface of the product.
• cetyl alcohol and/or stearyl alcohol can be utilized in conjunction with one or more waxes, such as ceresin wax.
• the cetyl alcohol can be present in an amount up to about 30% by weight of the lotion, and particularly between about 5% to about 15% by weight of the lotion, while the stearyl alcohol can be present in an amount up to about 20% by weight of the lotion, and particularly, between about 5% to about 15% by weight of the lotion.
• the wax ingredient(s) can be present, in this embodiment, in an amount between about 5% to about 10% by weight of the composition.
• a lotion of the present invention can also include an optional water-soluble skin conditioning component that contains one or more water-soluble skin conditioning agents.
• water-soluble refers to a compound that has a hydrophilic-lipophilic balance (HLB) number of 7 or greater.
• the HLB index is well known in the art and is a scale that measures the balance between the hydrophilic and lipophilic solution tendencies of a compound.
• the HLB scale ranges from 1 to approximately 100, with the lower numbers representing highly lipophilic tendencies and the higher numbers representing highly hydrophilic tendencies.
• the amount of the water-soluble skin conditioning component can be up to about 80% by weight of the lotion composition, in some embodiments up to about 60% by weight of the composition, and in some embodiments, between about 10% to about 40% by weight of the composition.
• the water-soluble skin conditioning component can include a humectant (i.e., a compound that has an affinity for water).
• a humectant can generally provide a number of benefits to a lotion of the present invention.
• a lotion applied to a paper product can be transferred to a person's hand after use.
• the lotion contains a humectant, which has an affinity for water, it can further enhance the retention of moisture on the person's skin and inhibit transepidermal water loss.
• the amount of humectant utilized in the lotion composition can vary.
• the amount of humectant can be up to about 35% by weight of the lotion composition, in some embodiments up to about 20% by weight of the composition, and in some embodiments, between about 5% to about 20% by weight of the composition.
• glycerin may be particularly useful in moisturizing the skin of a user and protecting it from excessive drying and other problems with the skin.
• glycerin can utilized in an amount up to about 35% by weight of the lotion composition, in some embodiments up to about 20% by weight of the composition, and in some embodiments, between about 10% to about 20% by weight of the composition.
• other skin conditioning agents can also be utilized in the lotion composition.
• some skin conditioning agents that may be suitable for use in the present invention include, but are not limited to, dimethicone, phospholipid SV (i.e., stearamidopropyl PG-dimonium chloride phosphate and cetyl alcohol), etc. Still other suitable skin conditioning agents are described in U.S. Patent No. 4,559,157 to Smith et al., 4,690,821 to Smith et al.. 5,830,487 to Klofta. et al.. and 5,871,763 to Luu. et al.. which are incorporated herein in their entirety by reference thereto for all purposes. It should also be understood that any of the ingredients mentioned above or below (e.g., oils, fatty alcohols, emulsifiers etc.) and/or other ingredients can also act as skin conditioning agents as well.
• any of the ingredients mentioned above or below e.g., oils, fatty alcohols, emulsifiers etc.
• other ingredients can also act as skin conditioning agents
• the lotion composition can also include an optional emulsifier component that contains one or more emulsifiers.
• an emulsifier can help stabilize certain ingredients within the lotion.
• the emulsifier component can generally be present in an amount up to about 35% by weight of the composition, in some embodiments between about 1% to about 30% by weight of the composition, and in some embodiments, between about 5% to about 25% by weight of the composition.
• suitable emulsifiers that can be used in the present invention include, but are not limited to, alkylene oxide esters of fatty acids, alkylene oxide diesters of fatty acids, alkylene oxide ethers of fatty acids, etc.
• emulsifiers include, but are not limited to, ceteth-2, ceteth-6, ceteth-10, ceteth-12, ceteareth-6, ceteareth-10, ceteareth-12, ceteareth-20, steareth-2, steareth-6, steareth-10, steareth-12, steareth-12, steareth-20, steareth-21 , PEG-6 stearate, PEG-10 stearate, PEG-100 stearate, PEG-12 stearate, PEG- 10 glyceryl stearate, PEG-20 glyceryl stearate, PEG-80 glyceryl tallowate, PEG-200 glyceryl tallowate, PEG-30 glyceryl cocoate, PEG- 80 glyceryl cocoate, PEG-8 dilaurate, PEG-10 distearate, glycol stearate, propylene glycol stearate, glycol distea
• Still other suitable emulsifiers can include laureth-4, polyethylene glycol 20 sorbitan monolaurate (Polysorbate 20), polyethylene glycol 5 soya sterol, PPG-2 methyl glucose ether distearate, Polysorbate 80, cetyl phosphate, potassium cetyl phosphate, diethanolamine cetyl phosphate, Polysorbate 60, polyoxyethylene 20 sorbitan trioleate (Polysorbate 85), sorbitan monolaurate, sorbitan tristearate, sorbitan stearate, sucrose distearate, sorbitan oleate, polyoxyethylene 4 lauryl ether sodium stearate, polyglyceryl-4 isostearate, and mixtures thereof.
• laureth-4 polyethylene glycol 20 sorbitan monolaurate (Polysorbate 20), polyethylene glycol 5 soya sterol, PPG-2 methyl glucose ether distearate, Polysorbate 80, cetyl phosphate, potassium cetyl
• emulsifiers Besides the emulsifiers mentioned above, still other types of emulsifiers can also be utilized. For instance, other suitable emulsifiers that can be utilized in accordance with the present invention are described in U.S. Patent No. 6,001 ,377 to SaNo ⁇ ueira. Jr... et al.. which is incorporated herein in its entirety by reference thereto for all purposes. In one embodiment, it has been discovered that emulsifier(s) having a relatively low HLB number, such as less than about 5, can be used to stabilize one or more ingredients of the water-soluble skin conditioning component.
• HLB number such as less than about 5
• emulsifiers having a relatively low HLB number can also enhance the ability of the lotion to absorb water during use to enhance the absorption characteristics of a paper product of the present invention.
• suitable emulsifiers that have a relatively low HLB number include, but are not limited to, glyceryl stearate, sucrose distearate, steareth-2, sorbitan stearate, glycol stearate, glycol distearate, propylene glycol stearate, ceteth-2, sorbitan tristearate, glyceryl laurate, glyceryl oleate, etc.
• emulsifier(s) having a relatively low HLB number can be present in various amounts, such as up to about 35% by weight of the composition, in some embodiments between about 1% to about 30% by weight of the composition, and in some embodiments, between about 5% to about 25% by weight of the composition.
• glyceryl stearate may be particularly useful as a relatively low HLB number emulsifier to stabilize water-soluble ingredient(s), such as glycerin.
• glyceryl stearate can help moisturize the skin of a user.
• glyceryl stearate can be utilized in an amount between about 10% to about 25% by weight of the composition.
• emulsifiers having a relatively low HLB number it should also be understood that emulsifiers having a relatively high HLB number, such as above about 5, can used to stabilize certain water- soluble and/or water-insoluble ingredients contained within the lotion of the present invention.
• an antimicrobial agent i.e., an additive that is capable of inhibiting the growth of viruses, bacteria, fungi, and other microbes
• an antimicrobial agent utilized in the present invention is biocompatible.
• the antimicrobial agent can be soluble in the oil components or can reside in the oil as a suspension.
• some suitable antimicrobial agents that can be used in the present invention include, but are not limited to, chlorohexidine gluconate; parachiorometaxylenol (PCMX); benzylthoneium chloride; chitosan, such as chitosan pyrrolidone carboxylate; 2,4,4'-trichloro-2'- hydroxydiphenyl ether (triclosan), etc.
• PCMX parachiorometaxylenol
• benzylthoneium chloride chitosan, such as chitosan pyrrolidone carboxylate; 2,4,4'-trichloro-2'- hydroxydiphenyl ether (triclosan), etc.
• Other suitable antimicrobial agents are described in U.S. Patent Nos. 5,871 ,763 to Luu. et al.. 5,334,388 to Hoan ⁇ . et al.. and 5,686,089 to Mitra. et al..
• the amount of an antimicrobial agent(s) utilized in the lotion composition of the present invention can generally vary.
• the amount of the antimicrobial agent(s) can be up to about 20% by weight of the composition, in some embodiments up to about 10% by weight of the composition, and in some embodiments, between about 0.01 % to about 5% by weight of the composition.
• the lotion can also contain one or more preservatives.
• the preservative(s) can inhibit the growth of certain microbes on the paper product before and/or after use. Moreover, when the lotion composition is transferred to the skin of a user, the prese ⁇ tative(s) can further inhibit the growth of microbes thereon.
• the amount of the preservative(s) utilized in the lotion composition of the present invention can generally vary. For example, in some embodiments, the amount of the preservative(s) can be up to about 5% by weight of the composition, in some embodiments up to about 3% by weight of the composition, and in some embodiments, between about 0.1% to about 2% by weight of the composition.
• Suitable preservatives include, but are not limited to, Mackstat H 66 (available from Mclntyre Group, Chicago, IL), DMDM hydantoin (e.g., Glydant PlusTM, Lonza, Inc., Fair Lawn, NJ), iodopropynyl butylcarbonate, Kathon (Rohm and Hass, Philadelphia, PA), methylparaben, propylparaben, 2- bromo-2-nitropropane-1 ,3-diol, benzoic acid, amidazolidinyl urea, diazolidinyl urea, and the like.
• Mackstat H 66 available from Mclntyre Group, Chicago, IL
• DMDM hydantoin e.g., Glydant PlusTM, Lonza, Inc., Fair Lawn, NJ
• iodopropynyl butylcarbonate e.g., Glydant PlusTM, Lonza,
• a preservative obtained under the name "Phenonip” from NIPA Hardwick can be utilized.
• Other suitable preservatives includes those sold by Sutton Labs, such as “Germall 115” (amidazolidinyl urea), “Germall M” (diazolidinyl urea), and “Germall Plus” (diazolidinyl urea and iodopropynyl butylcarbonate).
• ingredients can also be used.
• some classes of ingredients that can be used include, but are not limited to: antiacne actives (a drug product used to reduce the number of acne blemishes, acne pimples, blackheads, and whiteheads); antifoaming agents (reduce the tendency of foaming during processing); antiseptic actives; antioxidants (product integrity); astringents-cosmetic (induce a tightening or tingling sensation on skin); astringents-drug (a drug product which checks oozing, discharge, or bleeding when applied to skin or mucous membrane and works by coagulating protein); biological additives (enhance the performance or consumer appeal of the product); colorants (impart color to the product); deodorants (reduce or eliminate unpleasant odor and protect against the formation of malodor on body surfaces); external analgesics (a topically applied drug that has a topical analgesic, anesthetic, or antipruritic effect by depressing
• Aloe Vera powder can be utilized in an amount between about 0.0005% to about
• an oil utilized in the lotion of the present invention may also act as a skin conditioning agent.
• the lotion composition of the present invention is also anhydrous, i.e., generally free of water.
• the resulting composition can sometimes be more easily retained on the surface of the paper product for transfer to the skin of a user.
• the utilization of lower amounts of water can inhibit the growth of various , .. , stencil -...
• the lotion composition contains water in an amount less than about 5% by weight of the paper product, in some embodiments less than about 1 % by weight of the paper product, and in some embodiments, less than about 0.5% by weight of the paper product.
• the paper product may be formed from any papermaking process known in the art.
• a papermaking process of the present invention can utilize creping, embossing, wet-pressing, double creping, calendering, as well as other known steps in forming the paper web.
• One particular embodiment of the present invention utilizes a non-compressive drying technique, such as uncreped through-drying, to form the paper product.
• an uncreped through-dried paper product may have good absorbency and wet-resiliency characteristics.
• uncreped through-drying techniques are disclosed in U.S. Patent Nos. 5.048.589 to Cook, et al.; 5.399.412 to Sudall. et al.; 5,510,001 to Hermans, et al.: 5.591.309 to Ru ⁇ owski. et al.: and 6,017,417 to
• uncreped through-drying generally involves the steps of: (1) forming a furnish of cellulosic fibers, water, and optionally, other additives, such as debonders and wet-strength agents; (2) depositing the furnish on a traveling foraminous belt, thereby forming a fibrous web on top of the traveling foraminous belt; (3) subjecting the fibrous web to through-drying to remove the water from the fibrous web; and (4) removing the dried fibrous web from the traveling foraminous belt.
• the lotion composition described above can then be applied.
• the lotion composition of the present invention can be applied to the paper product using a variety of methods.
• the composition can be applied to the surface of the paper product using rotogravure printing, either direct or indirect (offset). Rotogravure printing can sometimes offer better control of the distribution and transfer rate of the composition onto the paper product.
• other application methods such as flexographic printing, spraying (e.g., WEKO), hot melt adhesive spraying (e.g., Nordson), blade, saturant, coating, droplet throw, and foam applications, can be used.
• the lotion composition can be applied to one or both outer surfaces of the product after the product has been dried.
• the lotion composition can be applied after the plies are brought together or prior to bringing the plies together.
• the individual plies can be layered or blended (homogeneous), creped or uncreped, through-dried or wet-pressed.
• the paper product is an uncreped through-dried paper product.
• some ingredients of the lotion can be first entrapped within a porous delivery vehicle before being applied to the paper product such that the ingredients can be controllably released during drying and after the lotion is transferred to a user's skin.
• some delivery vehicles that can be used include, but are not limited to, microsponges, microcapsules, cyclodextrins and their derivatives, liposomes, polymeric sponges, and spray-dried starch.
• the lotion composition may contain microcapsules in an amount of up to about 25% by weight of the lotion, in some embodiments up to about 10% by weight of the lotion, and in some embodiments, between about 0.2% to about 5% by weight of the lotion.
• microsponges are described in U.S. Pat. No. 4,690,825 to Won, which is incorporated herein in its entirety by reference thereto for all purposes.
• Another delivery vehicle that may be useful is a sponge-like material, such as POLY-PORE® L200.
• a microcapsule that may be suitable for use in the present invention is POLY-PORE® E200 (Chemdal Corp., Arlington Heights, IL), which is a delivery agent having soft, hollow spheres that can contain an additive at over 10 times the weight of the delivery vehicle.
• the add-on level of the lotion can generally vary depending on the desired effect of the composition on the product attributes and the specific composition.
• the term "add-on level" refers to the weight of a paper product treated with the lotion composition subtracted by the weight of the paper product prior to treatment, wherein this calculated weight is divided by the weight of the treated paper product and then multiplied by 100.
• the add-on level of the composition can be from about 1 to about 10 weight percent, in some embodiments from about 1 to about 6 weight percent, in some embodiments, from about 1 to about 5 weight percent, and in some embodiments, from about 1 to about 3 weight percent, based on the weight of the paper product.
• the present invention may be better understood with reference to the following examples.
• EXAMPLE 1 The ability to form lotions for use on a paper product in accordance with the present invention was demonstrated.
• three lotions labeled A, B, and C were formed having the following characteristics: Table 1 : Components of the Lotion Compositions
• the lotion compositions were prepared by mixing all of the components at a temperature of about 75°C until melted.
• a lotion was first formed having the following composition: Table 2: Components of the Lotion Composition
• the lotion composition was prepared by mixing all of the components at a temperature of about 75°C until melted. Thereafter, the resulting lotion was manually applied with a hand operated printing roll to an uncreped through-dried hand towel that was formed in a manner such as described above such that the add-on level was 6% by weight of the hand towel.
• the towel was formed from recycled fibers in an amount of 50% by weight of the web and from Pictou northern softwood fibers in an amount of 50% by weight of the web.
• the Pictou fibers were refined for 8 minutes using conventional refining techniques.
• the furnishes were then supplied to a machine chest and blended.
• a Kymene® 557H wet strength agent from Hercules, Inc. was also added to the machine chest in an amount of 20 pounds per ton.
• a Witco C-6001 imidazoline-based softener was applied to the machine chest thereafter in an amount of 1.5 pounds per ton.
• the fibrous furnish was then formed into a paper web and dried using a through-air dryer.
• the resulting hand towel had a basis weight of 25 pounds per ream.
• the properties of the treated hand towel were compared to an untreated hand towel using the following procedure. Initially, 14 nurses washed their hands four times with IVORY® Bar Soap and dried them with the untreated towel that was folded. During each wash, the hands of the nurses were thoroughly washed and lathered for 15 seconds.
• Table 3 reflects the percent of those tested who only used the corresponding number of towels to dry their hands after the first and fourth washes for the untreated sample.
• Table 4 reflects the percent of those tested who only used the corresponding number of towels to dry their hands after the first and fourth washes for the treated sample.
• the addition of the lotion composition onto a hand towel did not substantially affect the ability of the towel to dry a person's hands.
• the percentage of the subjects that needed four towels to dry their hands for the first wash only increased from 7.0% to 14.0%.
• the hand towel of the present invention can impart a number of beneficial affects to the user of a skin when used.
• the ability of the lotion to affect the moisture and skin barrier properties of skin was also tested.
• nine subjects were first acclimated in a controlled room set at 70°F and 50% relative humidity for 20 minutes. Upon acclimation, each subject had four 63 cm 2 test sites outlined on their volar forearm using a standard template. A series of baseline measurements were then taken from each test site with a Skicon-200 Conductance Meter (measurement of skin hydration) and a DermaLab® Systems Instrument (measurement of skin barrier damage). With the Skicon Meter, five conductance readings were taken for each 63 cm 2 test site and averaged. With the DermaLab® Instrument, four readings per second were taken at each test site and averaged.
• test sites were then washed with Ivory® Bar soap and dried with the appropriate hand towel (untreated and treated with the lotion of Table 2).
• the technician wet the site for 10 seconds, lathered for 30 seconds with Ivory® soap using a circular motion with the first two fingers, rinsed for 15 seconds or more if necessary until site was completely free of soap.
• each towel was folded into quarters and then folded into eighths.
• the test site was wiped using a downward motion with one side of the vertically held towel turned over to wipe with other side.
• the technician started at the top of each site with hands adjacent to each other to make a downswing motion to assure that as much of the towel contacted the test site as possible.
• the site was wet with water (for 5 seconds) and the towel then turned to the next % area. Drying steps were repeated 3 more times, as described above, to ensure that the entire towel was used.
• Tables 6 and 7 represents the average percent change from the Day 1 base line, before washing each day (referred to as “b") and after the final wash of a day (referred to as "a"), over the five-day time period for the untreated and treated towels.
• a decrease in SkiCon values from the baseline represents a decrease in skin hydration properties
• an increase in DermaLab® values from the baseline represents an increase in skin barrier damage.
• the towel treated according to the present invention exhibited improved moisture conductance compared to the untreated towel. For instance, after five days, the untreated towel had 21% less moisture conductance than the initial baseline moisture conductance, while the treated towel remained the same.
• the towel treated according to the present invention exhibited improved skin barrier properties compared to the untreated towel. For instance, after five days, the untreated towel had a 314% increase in skin barrier damage from the initial baseline reading, while the treated towel had an increase of only 211%.
• a lotion was first formed having the following composition:
• the lotion composition was prepared by mixing all of the components at a temperature of about 75°C until melted. Thereafter, the resulting lotion was manually applied with a hand operated printing roll to an uncreped through-dried hand towel that was formed in a manner such as described above such that the add-on level was 6% by weight of the hand towel.
• the towel was formed as described in Example 2.
• the properties of the hand towel of the present invention were compared to an untreated hand towel using the following procedure. Initially, 14 nurses washed their hands four times with IVORY® Bar Soap and dried them with the untreated towel that was folded. During each wash, the hands of the nurses were thoroughly washed and lathered for 15 seconds.
• Table 9 reflects the percent of those tested who only used the corresponding number of towels to dry their hands after the first and fourth washes for the untreated sample.
• Table 10 reflects the percent of those tested who only used the corresponding number of towels to dry their hands after the first and fourth washes for the treated sample.
• Table 10 Towel Usage (treated sample)
• the addition of the lotion composition onto a hand towel did not substantially affect the ability of the towel to dry a person's hands.
• the percentage of the subjects that needed four towels to dry their hands for the fourth wash only increased from 0.0% to 3.0%.
• the hand towel of the present invention can impart a number of beneficial affects to the user of a skin when used.
• Example 2 the ability of the lotion to affect the moisture conductance of skin was also tested.
• an untreated towel and treated towel were tested for moisture conductance in the manner set forth in Example 2.
• the Skicon and DermLab® results are shown below in Tables 12 and 13.
• the data shown in Tables 12 and 13 represents the average percent change from the Day 1 base line, before washing each day (referred to as "b") and after the final wash of a day (referred to as "a"), over the five-day time period for the untreated and treated towels.
• a decrease in SkiCon values from the baseline represents a decrease in skin hydration properties
• an increase in DermaLab® values from the baseline represents an increase in skin barrier damage.
• the towel treated according to the present invention exhibited improved moisture conductance compared to the untreated towel. For instance, after five days, the untreated towel had 21% less moisture conductance than the initial baseline moisture conductance, while the treated towel had only 3% less moisture conductance than the initial baseline moisture conductance.
• Table 13 DermLab® Results (Skin Barrier Damage Properties)
• the towel treated according to the present invention exhibited improved skin barrier properties compared to the untreated towel. For instance, after five days, the untreated towel had a 314% increase in skin barrier damage from the initial baseline reading, while the treated towel had an increase of only 183%.
• a paper product of the present invention can provide numerous benefits to a user.
• the particular selection and amount of ingredients utilized in the lotion of the present invention can provide a synergistic effect when applied to a paper product.
• the lotion applied to the paper product can help moisturize the skin of a user during use, as well as remaining on a user's hands for continued moisturizing affects.
• the lotion can enhance the ability of a user's skin to retain water even after using the paper product. By retaining water, a user's skin can be prevented from becoming excessively dry, as well as being inhibited from developing certain skin problems, such as erythema.
• the lotion can help to maintain the soft, smooth, and pliable appearance of the skin by its ability to remain on the skin surface or in the stratum corneum to act as a lubricant, to reduce flaking, and to improve the skin's appearance.
• the lotion can even help disinfect the skin of a user to inhibit the growth and/or spreading of various microbes.
• a paper product formed therewith can also retain the ability to dry a person's skin.
• a person can initially wash his/her hands using conventional soap. Thereafter, the person can utilize a paper product of the present invention for drying the wetted skin.

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• 2001
  • 2001-11-15 AU AU2002228714A patent/AU2002228714A1/en not_active Abandoned
  • 2001-11-15 WO PCT/US2001/045521 patent/WO2002041868A2/en not_active Application Discontinuation
  • 2001-11-15 EP EP01989836A patent/EP1335703A2/en not_active Withdrawn
  • 2001-11-15 KR KR10-2003-7006785A patent/KR20030062348A/ko not_active Application Discontinuation
  • 2001-11-15 JP JP2002544047A patent/JP2004513961A/ja active Pending
  • 2001-11-15 CA CA002427329A patent/CA2427329A1/en not_active Abandoned
  • 2001-11-15 CN CNA018192661A patent/CN1476324A/zh active Pending
  • 2001-11-15 BR BR0115555-5A patent/BR0115555A/pt not_active IP Right Cessation
  • 2001-11-15 MX MXPA03004418A patent/MXPA03004418A/es unknown
• 2003
  • 2003-04-29 ZA ZA200303293A patent/ZA200303293B/en unknown

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