CN1946903A - Fibrous structures comprising a transferable agent - Google Patents

Abstract

Fibrous structures comprising a transferable agent, single- or multi-ply sanitary tissue products made therefrom and processes for making same are provided.

Description

Fibrous structure containing transferable agent

field of invention

The present invention relates to fibrous structures comprising a transferable agent, single or ply sanitary tissue products made therefrom, and methods of making them. More specifically, the present invention relates to fibrous structures comprising a user-contacting surface comprising a transferable agent, wherein the transferable agent is associated with the fibrous structure (either directly or indirectly on the surface of the fibrous structure and/or present in the fibrous structure) such that greater than about 6% by weight of the transferable agent is transferred from the fibrous structure to the surface during use by a user (eg, contact with the fibrous structure).

Background of the invention

Humans are plagued by colds and allergies and their associated watery eyes and runny nose. In addition to causing difficulty breathing, seeing, speaking, and dealing with nasal discharge, individuals often afflicted with these discomforts must contend with painful and irritated discomfort in and around the nose, which is often red and Inflamed, thereby calling attention to its plight to others. Irritation and inflammation -- redness -- can have several causes. The main one is of course the necessity to blow the nose frequently with a tissue or cloth and to wipe the nasal discharge from the nose and surrounding area. The degree of irritation and inflammation caused by blowing and wiping is very much related to the surface roughness of the items used. The degree of irritation and inflammation is also closely related to the number of times the nose and surrounding area must be in contact with the item; using a relatively less durable and relatively non-absorbent item versus using a stronger or more absorbent item that can hold a large amount of nasal discharge Compared with the number of times of touching the face.

There have been many previous attempts to address the irritation and inflammation caused by blowing and wiping. Embodiments of these previous attempts have included the incorporation of lotions and/or beneficial skin chemicals into the fibrous structure. However, these previous attempts have been found to be unable to transfer and/or effectively transfer these lotions and/or chemicals to the user's skin in sufficient, eg, clinically beneficial, amounts to provide a clinically beneficial effect.

Accordingly, there remains a need for a fibrous structure comprising a transferable agent associated with the fibrous structure such that the transferable agent is sufficiently and/or effectively transferred to provide the desired benefit, such as improved user Conditions of irritated skin.

Summary of the invention

The present invention meets the above needs by providing a fibrous structure comprising a transferable agent that is sufficiently and/or efficiently transferred to an opposing surface to provide the desired benefit.

In one embodiment of the present invention there is provided a fibrous structure comprising a transferable agent, wherein said transferable agent is associated with said fibrous structure such that during use by a user greater than about 6% by weight and/or Or greater than about 7% and/or greater than about 9% and/or greater than about 11% and/or greater than about 15% and/or greater than about 17% of the transferable agent is transferred from the fibrous structure to the surface.

In another embodiment of the present invention there is provided a single or ply sanitary tissue product comprising the fibrous structure according to the present invention.

In another embodiment of the present invention, a method of treating a fibrous structure includes the step of associating a transferable agent with a fibrous structure in need of treatment such that greater than about 6% by weight of the transferable agent during use by a user Transfer from the fibrous structure to the surface.

Accordingly, the present invention provides fibrous structures comprising transferable agents, products made therefrom, and methods of making them.

Figure overview

Fig. 1 is the schematic diagram of fiber structure as described in the present invention;

Figure 2 is a cross-sectional view of Figure 1 taken along line 2-2;

Fig. 3 is a cross-sectional view of another embodiment of the fiber structure according to the present invention;

Fig. 4 is a cross-sectional view of another embodiment of the fiber structure according to the present invention;

Figure 5 is a cross-sectional view of another embodiment of the fiber structure according to the present invention;

Fig. 6 is a schematic diagram of another embodiment of the fiber structure according to the present invention.

Detailed description of the invention

definition

As used herein, "fiber" refers to elongated particles having an apparent length substantially in excess of their apparent diameter, ie, a length-to-diameter ratio of at least about 10. Fibers with non-circular cross-sections are common; "diameter" in this case can be considered to be the diameter of a circle with a cross-sectional area equal to the cross-sectional area of the fiber. More specifically, "fiber" as used herein refers to papermaking fibers. The present invention contemplates the use of a variety of papermaking fibers, such as, for example, natural fibers or synthetic fibers, or any other suitable fibers, and any combination thereof.

Natural papermaking fibers useful in the present invention include animal fibers, mineral fibers, vegetable fibers, and mixtures thereof. Animal fibers may be selected from, for example: wool, silk, and mixtures thereof. The plant fibers may be derived, for example, from plants selected from the group consisting of wood, cotton, cotton linters, flax, sisal, abaca, hemp, yucca, jute, bamboo, bagasse, kudzu, corn, sorghum, calabash, dragon Tongues, loofahs, and mixtures thereof.

Wood fibers, commonly referred to as wood pulp, include chemical wood pulps such as kraft (sulphate) and sulphite wood pulps, and mechanical and semi-chemical wood pulps, including, for example, groundwood, thermodynamic wood pulp, chemi-mechanical wood pulp ( CMP), chemical thermodynamic wood pulp (CTMP), neutral semichemical sulfite wood pulp (NSCS). However, chemical wood pulps may be preferred because they impart a better feel of softness to facial tissue sheets made from them. Wood pulp derived from deciduous trees (hereinafter also referred to as "hardwood") and coniferous trees (hereinafter also referred to as "softwood") may also be utilized. Hardwood and softwood fibers may be blended, or alternatively, may be deposited as layers to provide layered and/or layered webs. US Patent 4,300,981 and US Patent 3,994,771 are incorporated herein by reference for the disclosure of delamination of hardwood and softwood fibers. Also applicable to the present invention are fibers derived from recycled paper, which may contain any or all of the above categories, as well as other non-fibrous materials such as fillers and binders used to facilitate primary papermaking.

Wood pulp fibers can be short (typically hardwood fibers) or long (typically softwood fibers). Non-limiting examples of staple fibers include fibers derived from fiber sources selected from the group consisting of acacia, eucalyptus, maple, oak, poplar, birch, cottonwood, alder, ash, cherry, Elm, hickory, poplar, rubber, walnut, locust, sycamore, beech, catalpa, sassafras, catalpa, acacia, acacia, and magnolia. Non-limiting examples of long fibers include fibers derived from pine, spruce, fir, larch, hemlock, cypress, and cedar. Softwood fibers derived from the kraft pulp process and originating from more northern climates may be preferred. These are commonly referred to as northern softwood kraft (NSK) wood pulps.

Synthetic fibers may be selected from wet spun fibers, dry spun fibers, melt spun (including meltblown) fibers, synthetic wood pulp fibers, and mixtures thereof. Synthetic fibers may be composed, for example, of cellulose (often referred to as "rayon"); cellulose derivatives such as esters, ethers or nitrous acid derivatives; polyolefins (including polyethylene and polypropylene); polyesters (including poly Polyethylene terephthalate); polyamides (often referred to as "nylons"); acrylic resins; non-cellulosic polymeric carbohydrates (such as starch, chitin, and chitin derivatives such as chitosan); their mixture.

As used herein, the term "fibrous structure" refers to a structure comprising one or more fibers. Non-limiting examples of methods of making fibrous structures include known wet-laid and air-laid papermaking methods. These processes typically include the steps of: preparing a fiber composition, often referred to as a fiber slurry in a wet-laid process, either wet or dry; and then depositing a plurality of fibers onto a forming wire or belt such that a rudimentary fiber structure is formed ; drying and/or bonding the fibers together such that a fibrous structure is formed; and/or further processing the fibrous structure such that a finished fibrous structure is formed. For example, in a typical papermaking process, the finished fibrous structure is the fibrous structure that is wound on a reel at the end of papermaking, but before it is converted into sanitary tissue products.

A "sanitary tissue product" includes one or more converted or unconverted fibrous structures that are useful as wiping articles for post-defecation cleansing (toilet tissue), ear, nose, and throat discharge (facial tissue) and/or disposable handkerchiefs) and multipurpose absorbent and cleansing uses (absorbent wipes). In one embodiment, there is provided a multi-ply disposable handkerchief comprising a lotion composition according to the present invention having a thickness of from about 0.1 mm to about 0.4 mm.

The term "ply" as used herein refers to an individual finished fibrous structure, optionally disposed in substantially adjacent face-to-face relationship with other plies to form a multi-ply finished fibrous structure product and/or sanitary tissue product. It is also contemplated that a single fibrous structure may effectively form two or more layers by, for example, being folded upon itself.

As used herein, the term "fibrous structure surface" refers to that portion of the fibrous structure that is exposed to the external environment. In other words, the surface of the fiber structure is that part of the fiber structure that is not completely surrounded by other parts of the fiber structure.

As used herein, the term "user contact surface" refers to that portion of the fibrous structure and/or transferable agent and/or surface treatment composition and/or detergent that is present directly and/or indirectly on the surface of the fibrous structure exposed to the external environment. agent composition. In other words, it is formed by a fibrous structure, that surface which contacts the opposite surface when in use by the user, said fibrous structure including any surface treatment composition and/or lotion present directly or indirectly on the surface of the fibrous structure combination. For example, it is formed by a fibrous structure that contacts that surface of the user's skin when the user wipes his/her skin with the fibrous structure of the present invention, said fibrous structure including being directly and/or indirectly present on the surface of the fibrous structure any surface treatment composition and/or lotion composition.

In one embodiment, the user-contacting surface may comprise raised and recessed regions of the fibrous structure, particularly for textured and/or structured fibrous structures, such as air-dried and/or embossed fibrous structures . In the case of an air-dried, patterned dense fibrous structure, the raised areas can be bulges and the recessed areas can be pillows, or vice versa. Thus, the bulk may directly and/or indirectly contain the lotion composition, while the pillow may contain the surface treatment composition, and vice versa, so that when the user contacts the user's skin with the fibrous structure, the lotion composition and Surface treatment compositions all come into contact with the skin of the user. A similar situation is true for embossed fibrous structures, where the embossed areas may directly and/or indirectly comprise the lotion composition, while the non-embossed areas may comprise the surface treatment composition, and vice versa.

In one embodiment, the user contacting surface must comprise an area of sufficient size that, in use, two or more different areas (comprising different compositions) are exposed to the opposing surface. In other words, are substantially covered (on the microscopic scale) by the lotion composition, and are completely covered by such lotion composition on the macroscopic scale, so that the user's skin is only contacted by the fibrous structure of the lotion composition A surface that does not contain two distinct regions in its user contact surface. In one embodiment, the user contacting surface may comprise an outer layer of a multilayer fibrous structure, wherein the outer layer may comprise a surface treatment composition and/or a lotion composition.

The user contacting surface may be present on the fibrous structure and/or the sanitary tissue product prior to user use, and/or the user contacting surface may be created before and/or during user use of the fibrous structure and/or sanitary tissue product /Formation, such as occurs/forms when the user applies pressure to the fibrous structure and/or the sanitary tissue product when the user brings the user's skin into contact with the fibrous structure and/or the sanitary tissue product.

All percentages and ratios are calculated by weight unless otherwise indicated. All percentages and ratios are calculated based on the total composition unless otherwise specified.

Unless otherwise indicated, all component or composition levels are in reference to the active level of that component or composition and do not include impurities such as residual solvents or by-products that may be present in commercially available sources.

fiber structure

The transferable agent of the present invention may be present in the surface treatment composition and/or the lotion composition and/or may be present directly or indirectly on and/or in the fibrous structure.

Figure 1 is a schematic diagram of a fiber structure according to the present invention. As shown in FIG. 1 , the fibrous structure 10 includes a user-contacting surface 12 that includes a first region 14 and a second region 16 . The user contact surface 12 is associated with a surface 18 of the fibrous structure. As shown, the surface 18 of the fibrous structure may include one or more fibers 20 .

The first region 14 and/or the second region 16 may be present on (associated with) the surface 18 of the fibrous structure. When the first region 14 and/or the second region 16 are present on the surface 18 of the fibrous structure, one or both may be in the form of a continuous or substantially continuous network and/or in a plurality of discrete regions (sometimes referred to as "islands") are present on the surface 18 of the fibrous structure.

When present on the surface 18 of the fibrous structure, the first region 14 and/or the second region 16 may contact and/or cover the entire or substantially the entire surface area of the surface 18 of the fibrous structure. In one embodiment, the first region 18 contacts and/or covers the entire or substantially entire surface area of the fibrous structure surface 18 .

When present on the surface 18 of the fibrous structure, the first region 14 and/or the second region 16 may contact and/or cover less than the entire or substantially the entire surface area of the surface 18 of the fibrous structure. In one embodiment, the second region 16 contacts and/or covers less than the entire or substantially entire surface area of the fibrous structured surface 18 . When any one region covers less than substantially the entire surface area of the fibrous structured surface 18, that region may be in the form of a plurality of discrete regions.

As shown in FIG. 2 , the first region 14 contacts and/or covers substantially the entire surface area of the fibrous structure surface 18 , while the second region 16 contacts and/or covers less than substantially the entire surface area of the fibrous structure surface 18 . The first region 14 may be in the form of a continuous or substantially continuous web, while the second region 16 may be in the form of a plurality of discrete regions distributed throughout the continuous or substantially continuous web of the first region 14 .

Either region may be in contact with another region. As shown in FIG. 3 , the second region 16 is in contact with the first region 14 such that the first region 14 is located between the second region 16 and the surface 18 of the fibrous structure. The second region 16 may exist over less than the entire surface area of the first region 14 . The second region 16 may exist on the first region 14 in the form of one or more discrete regions. As shown in Figures 1, 4 and 5, some portion of the second region 16 is in contact with the first region 14 such that both the second region 16 and the first region 14 are in direct contact with the surface 18 of the fibrous structure. As also shown in FIGS. 4 and 5 , a portion of the second region 16 is not in contact with the first region 14 .

4 and 5 also show that less than substantially the entire surface area of the fibrous structure surface 18 is contacted or covered by the first region 14 and the second region 16 . In these embodiments, the user-contacting surface 12 includes a third region, a fibrous structured surface 18 , and a first region 14 and a second region 16 .

Fig. 6 is a schematic diagram of another embodiment of the fiber structure according to the present invention. The fibrous structure 10 includes a user contacting surface 12 comprising a first region 14, a second region 16 and a third region, in this case the third region comprising one or more fibers 20. Fiber structured surface 18 .

The first zone 14 contains a surface treatment composition.

The second zone 16 contains a lotion composition.

In one embodiment, the surface treatment composition and/or lotion composition may be present at a higher level by weight on the surface 18 of the fibrous structure than within the fibrous structure.

In another embodiment, the surface treatment composition and/or lotion composition may be present in a higher amount by weight within the fibrous structure than on the surface 18 of the fibrous structure.

The surface area coverage of the surface treatment composition on the surface of the fibrous structure may be greater than about 10% and/or greater than about 30% and/or greater than about 50% to about 100% and/or to about 90% and/or to about 85% %.

The surface area coverage of the lotion composition on the surface of the fibrous structure may be greater than about 1% and/or greater than about 5% and/or greater than about 10% and/or greater than about 20% to about 99% and/or to about 90% % and/or to about 75% and/or to about 50%.

In one embodiment, the surface area of the fibrous structure and/or sanitary tissue product comprises greater than about 10% and/or greater than about 20% and/or greater than about 50% and/or greater than about 70% and/or greater than about 80% % and/or greater than about 90% of the surface treatment composition, and comprising 0 to about 90% and/or 0 to about 80% and/or 0 to about 50% and/or 0 to about 30% and/or 0 to About 20% and/or 0 to about 10% of the lotion composition. When the surface area of the fibrous structure and/or the surface of the sanitary tissue product contains 0% of the lotion composition, then the lotion may be within the fibrous structure and/or within the sanitary tissue product, such as in the sanitary tissue product between the two layers.

In another embodiment, the surface area of the user-contacting surface comprises from about 20% to about 97% and/or from about 50% to about 97% and/or from about 80% to about 97% of the surface treatment composition, and comprises From about 3% to about 80% and/or from about 3% to about 50% and/or from about 3% to about 20% and/or from about 3% to about 15% of a lotion composition.

The surface area coverage of the fibrous structure and/or sanitary tissue product can be determined by the "Surface Area Coverage Test Method" described herein.

Each region may exhibit within itself a different concentration of their respective composition, and/or a different height (protrusion from the surface of the fibrous structure) of their respective composition.

The user contact surface area may comprise greater than about 10% and/or greater than about 30% and/or greater than about 50% to about 100% and/or to about 90% and/or to about 85% of the surface treatment composition, and /or greater than about 1% and/or greater than about 5% and/or greater than about 10% and/or greater than about 20% to about 99% and/or to about 90% and/or to about 75% and/or to about 50% lotion composition.

The combination of the surface treatment composition and the lotion composition in the user contacting surface was shown to have greater softness than the user contacting surface comprising either the surface treatment composition or the lotion composition alone.

The user contacting surface may be flat, or may have protrusions of either surface treatment composition and/or lotion composition such that the user contacting surface appears to have different heights.

In another embodiment, the user-contacting surface may include areas of greater concentration and/or greater concentration of lotion composition, areas of lesser concentration and/or lesser concentration of lotion composition, and surface treatment composition Area.

The surface treatment composition and the lotion composition may comprise one or more similar and/or identical ingredients, so long as the user contact surface comprises a first region comprising a different composition than that present in a second region (at least one ingredient in the composition is different).

Non-limiting types of fibrous structures according to the present invention include conventional felted fibrous structures; patterned dense fibrous structures and high bulk, uncompacted fibrous structures. The fibrous structure may be of uniform or multi-ply (two-ply or three-ply or multi-ply) construction; and sanitary tissue products made therefrom may be of single-ply or multi-ply construction.

The fibrous structure may be post-processed, such as by embossing and/or calendering and/or folding and/or printing images thereon.

The fibrous structure may be an air-dried fibrous structure or a conventionally dried fibrous structure.

The fibrous structure can be creped or uncreped.

^The fibrous structures and/or sanitary tissue products of the present invention exhibit a basis weight of from about 10 g/m ² to about 120 g/m 2 , and/or from about 12 g/m ² to about 80 g/m ² , and/or from about 14 g /m ² to about 65 g/m ² .

The fibrous structures and/or sanitary tissue products of the present invention exhibit a total dry tensile strength that can be greater than about 59 g/cm (150 g/in) and/or about 78 g/cm (200 g/in) and/or about 98 g/cm (250g/in) to about 1182g/cm (3000g/in) and/or to about 984g/cm (2500g/in) and/or to about 787g/cm (2000g/in) and/or to about 394g/cm ( 1000g/in) and/or to about 335g/cm (850g/in).

The fibrous structures and/or sanitary tissue products of the present invention can exhibit a density of less than about 0.60 g/cm ³ , and/or less than about 0.30 g/cm ³ , and/or less than about 0.20 g/cm ³ , and /or less than about 0.10 g/cm ³ , and/or less than about 0.07 g/cm ³ , and/or less than about 0.05 g/cm ³ , and/or from about 0.01 g/cm ³ to about 0.20 g/cm ³ , and /or from about 0.02 g/cm ³ to about 0.10 g/cm ³ .

The fibrous structures and/or sanitary tissue products of the present invention may exhibit an average lint value greater than about 0.1 and/or greater than about 0.5 and/or greater than about 1.0 and/or greater than about 1.5 and/or greater than about 2.0 and /or greater than about 3.0 to about 20 and/or to about 15 and/or to about 13 and/or to about 10 and/or to about 8.

transferable agent

The fibrous structures of the present invention may comprise by weight less than about 50% and/or less than about 40% and/or less than about 30% and/or less than about 20% and/or less than about 10% and/or less than about 5% to From about 0.01% and/or to about 0.1% and/or to about 1% transferable agent.

The transferable agent can be an anti-inflammatory compound, a lipid, an inorganic anion, an inorganic cation, a protease inhibitor, a chelating agent, and mixtures thereof.

In one embodiment, the transferable agent is associated on the user contact surface in an amount of less than about 10 g/m ² and/or less than about 8 g/m ² and/or less than about 6 g/m ² to about 0.5 g /m ² and/or to about 1.0 g/m ² and/or to about 1.5 g/m ² .

In one embodiment, the transferable agent can be any substance that has a greater affinity for oil than water, and/or provides skin health benefits by directly interacting with the skin. Suitable examples of such benefits include, but are not limited to, enhancing skin barrier function, enhancing moisturizing and nourishing the skin.

Non-limiting examples of suitable transferable agents include fatty acids, fatty acid esters, fatty alcohols, triglycerides, phospholipids, mineral oils, essential oils, sterols, sterol esters, emollients, waxes, and combinations thereof.

The transferable agent can be alone, included in the lotion composition, and/or included in the surface treatment composition. A commercially available lotion composition containing a transferable agent is Vaseline ^(R) Extra Conditioning Lotion (Chesebrough-Pond's, Inc.).

Non-limiting examples of fats and oils that can be used as transferable agents include apricot kernel oil, avocado oil, babassu oil, borage seed oil, butter, C.sub.12-C.sub.18 triglycerides Esters, Camellia Oil, Canola Oil, Caprylic/Capric/Lauric Triglyceride, Caprylic/Capric/Linoleic Triglyceride, Caprylic/Capric/Stearic Triglyceride, Caprylic/Capric Triglyceride Triglycerides, Carrot Oil, Cashew Oil, Castor Oil, Cherry Seed Oil, Sage Oil, Cocoa Butter, Coconut Oil, Cod Liver Oil, Corn Germ Oil, Corn Oil, Cottonseed Oil, C.sub.10-C.sub .18 Triglycerides, Egg Butter, Epoxidized Soybean Oil, Evening Primrose Oil, Glyceryl Triacetyl Hydroxystearate, Glyceryl Triacetyl Ricinoleate, Glycosphingolipids, Grapeseed Oil, Hazelnut Oil, Human Placenta Lipid, Blended Safflower Oil, Blended Sunflower Seed Oil, Hydrogenated Castor Oil, Hydrogenated Castor Oil Laurate, Hydrogenated Coconut Oil, Hydrogenated Cottonseed Oil, Hydrogenated C.sub.12-C.sub.18 Triglycerides Esters, Hydrogenated Fish Oil, Hydrogenated Lard Oil, Hydrogenated Herring Oil, Hydrogenated Mink Oil, Hydrogenated Snapper Oil, Hydrogenated Palm Kernel Oil, Hydrogenated Palm Oil, Hydrogenated Peanut Oil, Hydrogenated Shark Liver Oil, Hydrogenated Soybean Oil, Hydrogenated Butter, Hydrogenated Vegetable Oil, Lanolin and Lanolin Derivatives, Lard Oil, Lauric/Palmitic/Oleic Triglycerides, Lesquerella Oil, Flaxseed Oil, Macadamia Nut Oil, Maleated Soybean Oil, Pond Seed Oil, Herring Oil, Moringa oil, Morita oil, cow foot oil, oleic acid/linoleic acid triglyceride, oleic acid/palmitic acid/lauric acid/myristic acid/linoleic acid triglyceride, oleostearin, olive shell oil, Olive Oil, Omentum Lipid, Orange Snapper Oil, Palm Kernel Oil, Palm Oil, Peach Kernel Oil, Peanut Oil, Pengawa Djambi Oil, Pentadesma Butter, Lecithin, Pistachio Nut Oil, Placenta Lipid, Rapeseed Oil, Rice Bran Oil, Safflower Oil, Sesame Oil, Shark Liver Oil, Shea Butter, Soybean Oil, Sphingolipids, Sunflower Seed Oil, Sweet Almond Oil, Tall Oil, Shea Butter, Tribehenin, Tricaprin, Glyceryl Tricaprylate, Triheptanoin, Glyceryl Trihydroxymethoxystearate, Glyceryl Trihydroxystearate, Glyceryl Triisononanoin, Glyceryl Triisostearate , Glyceryl Trilaurate, Glyceryl Trilinoleate, Glyceryl Trilinolenate, Glyceryl Trimyristate, Glyceryl Trioctanoin, Glyceryl Trioleate, Glyceryl Tripalmitate, Trisebacin, Trihard Fatty Glycerides, Triundecanoin, Vegetable Oils, Walnut Oil, Wheat Bran Lipids, Wheat Germ Oil and Zadoary Oil.

Non-limiting examples of fatty acids suitable for use as transferable agents include arachidic acid, arachidonic acid, behenic acid, capric acid, caproic acid, caprylic acid, coconut acid, cornic acid, cottonseed acid, hydrogenated coconut acid, Hydrogenated Herringic Acid, Hydrogenated Butter, Hydroxystearic Acid, Isostearic Acid, Lauric Acid, Linoleic Acid, Linolenic Acid, Linolenic Acid, Myristic Acid, Oleic Acid, Palmitic Acid, Palm Kernel Acid, Nonanoic Acid, Ricinic Acid Lactic acid, soybean acid, stearic acid, tall oil acid, tallow acid, undecylic acid, undecylenic acid and wheat germ acid.

Non-limiting examples of fatty alcohols suitable for use as transferable agents include behenyl alcohol, C.sub.9-C.sub.11 alcohols, C.sub.12-C.sub.13 alcohols, C.sub. 12-C.sub.15 Alcohol, C.sub.12-C.sub.16 Alcohol, C.sub.14-C.sub.15 Alcohol, Octyl Alcohol, Cetearyl Alcohol, Cetyl Alcohol, Coconut Alcohol, decyl alcohol, hydrogenated tallow alcohol, lauryl alcohol, myristyl alcohol, oleyl alcohol, palmityl alcohol, palm kernel alcohol, stearyl alcohol, tallow alcohol and tridecyl alcohol.

Non-limiting examples of essential oils suitable as transferable agents include fennel oil, lemon balm oil, basil oil, lemon balm oil, bergamot oil, birch oil, bitter almond oil, bitter orange oil, Calendula Oil, Nutmeg Oil, Fennel Oil, Cardamom Oil, Chamomile Oil, Cinnamon Oil, Sage Oil, Clove Leaf Oil, Clove Oil, Coriander Oil, Cypress Oil, Eucalyptus Oil, Cumin Oil, Gardenia Oil, Geranium Oil, Ginger Oil, Grapefruit Oil, Hops Oil, Hyptis Oil, Indigo Bush Oil, Jasmine Oil, Juniper Oil, Kiwi Oil, Bay Oil, Lavender Oil, Lemongrass oil, lemon oil, linden oil, angelica oil, citrus oil, chamomile oil, musk rose oil, nutmeg oil, frankincense, neroli oil, orange oil, green leaf oil, peppermint oil, peppermint oil, pine oil, pine tar, rosehip oil, rosemary oil, rose oil, rue oil, sage oil, elderflower oil, sandalwood oil, sassafras oil, silver fir oil, spearmint oil, sweet oregano oil, Sweet Violet Oil, Tar Oil, Tea Tree Oil, Thyme Oil, Wild Peppermint Oil, Yarrow Oil, and Ylang Ylang Oil.

Non-limiting examples of sterols and/or sterol derivatives suitable for use as transferable agents include sterols such as cholesterol, sitosterol, stigmasterol and ergosterol with a tail at position 17 and no polar group, and C ₁₀ -C ₃₀ Cholesterol/Lanosteryl Ester, Cholecalciferol, Cholesteryl Hydroxystearate, Cholesteryl Isostearate, Cholesteryl Stearate, 7-Dehydrocholesterol, Dihydrocholesterol, Dihydrocholesterol Octacyl Dihydrolanosterol, Dihydrolanosterol Octadecanoate, Ergocalciferol, Tallesterol, Soysterol Acetate, Lanosterol, Soybean Sterol, Avocadosterol, Avocadin, and Sterol Esters.

Non-limiting examples of emollient substances suitable for use as transferable agents include mineral oil, mineral jelly, petrolatum, cosmetic esters, fatty esters, glycerides, alkoxylated carboxylic acids, alkoxylated alcohols, fatty alcohols , lanolin and lanolin derivatives, petrolatum base oils, silicones, fats, hydrogenated vegetable oils and polyol esters.

Non-limiting examples of waxes suitable for use as transferable agents include natural and synthetic waxes such as laurel fruit wax, beeswax, _C30 alkyl dimethicone, candelilla wax, carnauba wax, ceresin wax , cetyl esters, hydrogenated cottonseed oil, hydrogenated jojoba oil, hydrogenated jojoba wax, hydrogenated microcrystalline wax, hydrogenated rice bran wax, Japanese wax, jojoba butter, jojoba esters, jojoba wax, lanolin wax, microcrystalline wax , mink wax, montan acid wax, montan wax, small crown coconut wax, ozokerite wax, paraffin wax, PEG-6 beeswax, PEG-8 beeswax, rice bran wax, lac wax, waste grain wax, stearyl polydimethylformaldehyde Silicone-based synthetic beeswax, synthetic candelilla wax, synthetic carnauba wax, synthetic Japanese wax, synthetic jojoba wax, and synthetic wax. In one embodiment, the wax comprises carnauba wax, cherry wax, cetyl esters, microcrystalline wax, montan wax, ozokerite wax and/or synthetic wax.

Non-limiting examples of humectants suitable for use as transferable agents include acetamide MEA, aloe vera gel, arginine PCA, chitosan PCA, copper PCA, corn glycerides, dimethylimidazolidinone, fructose, Glucosamine, Glucose, Glucose Glutamate, Glucuronic Acid, Glutamic Acid, Glycereth-7, Glycereth-12, Glycereth-20, Glycereth-26, Glycerin, Honey, Hydrogenated Honey, Hydrogenated Starch Hydrolyzate, Hydrolyzed Corn Starch, Lactamide MEA, Lactic Acid, Lactose Lysine PCA, Mannitol, Methyl Gluceth-10, Methyl Gluceth-20, PCA, PEG-2 Lactamide, PEG-10 Propylene Glycol, Polyamino Sugar Concentrate, Potassium PCA, propylene glycol, propylene glycol citrate, sugar hydrolysates, sugar isomers, sodium aspartate, sodium lactate, sodium PCA, sorbitol, and TEA-cream ester.

surface treatment composition

For the purposes of the present invention, a surface treatment composition is a composition that improves the tactile feel of the surface of a fibrous structure as perceived by a user who holds the fibrous structure and/or a sanitary tissue product comprising said fibrous structure and wipes it for use patient's skin. This palpable softness is characterized by, but is not limited to, friction, pliability, and smoothness, as well as subjective descriptors such as smooth, velvet, silk, or flannel-like feel.

The surface treatment composition may or may not be transferable. Typically, it is essentially non-transferable.

The surface treatment composition can increase or decrease the surface friction of the surface of the fibrous structure, especially the user contacting surface of the fibrous structure. Typically, the surface treatment composition will reduce surface friction on the surface of the fibrous structure compared to the surface of the fibrous structure without such surface treatment composition.

The surface treatment composition may have a wetting tension less than or equal to the surface tension of the lotion composition so as to minimize distribution of the lotion composition upon initial contact with the surface treatment composition.

The surface treatment composition contains a surface treatment agent. When applied to a fibrous structure, the surface treatment composition may comprise at least about 0.1% and/or at least about 0.5% and/or at least about 1% and/or at least about 3% and/or at least about 5% by weight to About 90% and/or to about 80% and/or to about 70% and/or to about 50% and/or to about 40% surface treatment agent. In one embodiment, the surface treatment composition comprises from about 5% to about 40% by weight of the surface treatment agent.

The surface treatment composition present on the fibrous structure and/or the sanitary tissue product comprising the fibrous structure of the present invention may comprise at least about 0.01%, and/or at least about 0.05%, and/or at least about 0.1% of the total amount of surface treatment agent. In one embodiment, the fibrous structure and/or sanitary tissue product may comprise from about 0.01% to about 20%, and/or from about 0.05% to about 15%, and/or from about 0.1% to about 10%, and/or From about 0.01% to about 5%, and/or from about 0.1% to about 2% of the total amount of surface treatment composition.

In one embodiment, the surface treatment composition of the present invention is a microemulsion of a surface treatment agent, such as an amino-functional polydimethylsiloxane, in water. In such an embodiment, the concentration of the surface treatment agent in the surface treatment composition may be from about 3% to about 60%, and/or from about 4% to about 50%, and/or from about 5% to about 40%. Non-limiting examples of such microemulsions are commercially available from Waeker Chemie, Dow Corning and/or General Electric Silicones.

Non-limiting examples of suitable surface treatments may be selected from: polymers such as polyethylene and its derivatives, hydrocarbons, waxes, oils, silicones (polysiloxanes), quaternary ammonium compounds, fluorocarbons, substituted C ₁₀ -C ₂₂ alkanes, substituted C ₁₀ -C ₂₂ alkenes, especially derivatives of fatty alcohols and fatty acids (such as fatty acid amides, fatty acid condensates and fatty alcohol condensates), polyols, derivatives of polyols (such as esters and ethers), carbohydrate derivatives (such as ethers and esters), polyethylene glycols (such as polyethylene glycol), and mixtures thereof.

The surface treatment composition may comprise additional ingredients, such as the carrier described herein below, which may not be present on the fibrous structure and/or the sanitary tissue product comprising such a fibrous structure. In one embodiment, the surface treatment composition may comprise a surface treatment and a carrier, such as water, to facilitate application of the surface treatment to the surface of the fibrous structure.

Lotion composition

Lotion compositions may contain oils and/or emollients and/or waxes (any or all of which may be transfer agents) and/or fixatives. In one embodiment, the lotion composition comprises from about 10% to about 90% oil and/or liquid emollient, and from about 10% to about 50% immobilizing agent, and/or from about 0% to about 60% Vaseline, and optional balance of carrier.

Lotion compositions may be heterogeneous. They may comprise solids, gel structures, polymeric materials, multiple phases (such as oil and water phases) and/or emulsified components. It can be difficult to accurately determine the melting temperature of a lotion composition, ie, the transition temperature between liquid, quasi-liquid, quasi-solid and solid states. The terms melting temperature, melting point, transition point and transition temperature are used interchangeably in this document and have the same meaning.

Lotion compositions may be highly viscous semi-solids such that they do not substantially flow without activation during the life of the product or gel structure.

Lotion compositions may be shear thinning, and/or they may change their viscosity substantially around skin temperature to allow transfer and ease of distribution on the user's skin.

Lotion compositions may be in the form of emulsions and/or dispersions.

In one embodiment of the lotion composition, the lotion composition has a water content of less than about 20%, and/or less than about 10%, and/or less than about 5%, or less than about 0.5% .

In another embodiment, the lotion composition may have a solids content of at least about 15% and/or at least about 25% and/or at least about 30% and/or at least about 40% to about 100% and/or to About 95% and/or to about 90% and/or to about 80%.

Non-limiting examples of suitable oils and/or emollients include glycols (such as propylene glycol and/or glycerin), polyethylene glycols (such as triethylene glycol), petrolatum, fatty acids, fatty alcohols, fatty alcohol ethoxylated fatty acid esters and ethers, fatty acid ethoxylates, fatty acid amides and fatty acid esters, hydrocarbon oils (such as mineral oil), squalane, fluorinated emollients, silicone oils (such as poly methyl siloxanes), and mixtures thereof.

Immobilizing agents include agents that prevent migration of the emollient into the fibrous structure such that the emollient remains primarily on the surface of the fibrous structure and/or sanitary tissue product and/or remains on the surface of the fibrous structure and/or sanitary tissue product on the surface treatment composition and facilitates the transfer of the lotion composition to the skin of the user. Fixatives can act as tackifiers and/or gelling agents.

Non-limiting examples of suitable fixatives include waxes (e.g. ceresin, ozokerite, microcrystalline waxes, petroleum waxes, Fischer-Tropsh waxes, silicone waxes, paraffin waxes) , fatty alcohols (such as cetyl alcohol and/or stearyl alcohol), fatty acids and their salts (such as metal salts of stearic acid), monohydroxy and polyhydroxy fatty acid esters, monohydroxy and polyhydroxy fatty acid amides, silicon dioxide and silica derivatives, gelling agents, thickeners, and mixtures thereof.

In one embodiment, the lotion composition comprises at least one immobilizing agent and at least one emollient.

In one embodiment, the lotion composition comprises sucrose esters of fatty acids.

The lotion composition can be added to the fibrous structure at any point during the papermaking and/or converting process. In one embodiment, the lotion composition is added to the fibrous structure during the converting process.

The lotion composition may contain a transferable agent as it is considered a transferable lotion composition. Transferable lotion compositions comprise at least one transferable agent capable of being transferred to an opposing surface, such as the skin of a user, upon use. In one embodiment, at least 0.1% of the transferable lotion present on the user contacting surface transfers to the user's skin during use. The amount of transferable composition that is transferred to the user's skin during use can be determined by known methods, such as by lifting the skin with Tegaderm Tape available from 3M after the user has used the fibrous structure and/or tissue hygiene product. 3 times, then analyze the tape for the transferable composition or one component within the transferable composition, assuming all components of the transferable composition are transferred equally.

Other optional components that may be included in the lotion composition include carriers, fragrances, especially long-lasting and/or long-lasting fragrances, antibacterial actives, antiviral actives, disinfectants, pharmaceutical actives, film formers, Deodorants, sunscreens, astringents, solvents, cooling sensates, and more. Particular examples of lotion compositions include camphor, thymol, menthol, chamomile extract, aloe, calendula, alpha-bisabolol, vitamin E, vitamin E acetate.

In one embodiment of the lotion composition of the present invention, the lotion composition has a melting point of greater than about 35°C. For example, the lotion composition must be subjected to a temperature of greater than about 35° C. before a substantial amount (eg, greater than 30%, and/or greater than 40% and/or greater than 50% and/or greater than 60%) of the lotion composition melts. This can be expressed as:

(1) ΔH ² /ΔH ¹ is equal to or greater than about 1, and/or is equal to or greater than about 4, and/or is equal to or greater than about 9; and/or

(2) ΔH ² equal to or greater than about 30 J/g, 40 J/g, and/or equal to or greater than about 60 J/g (especially if ΔH ¹ is 0)

Where: ^ΔH1 is the energy required to raise the temperature of the lotion composition from 15°C to 35°C; ^ΔH2 is the temperature required to raise the temperature of the lotion composition from 35°C to the temperature at which the lotion composition is completely liquid , or the energy required to raise the temperature below 100°C to which no further melting occurs in the case of lotion compositions comprising components which melt only above 100°C.

[Delta]H is determined by DSC technique with standard parameters known to those skilled in the art. DSC data were acquired using a Thwing Albert DSC 2920 Instrument calibrated with an indium metal standard with a melting onset temperature of 156.6°C and a heat of fusion of 6.80 calories per gram as reported in the literature. The sample is first heated to 100°C at a rate of 10°C/min, equilibrated at 100°C for 5 minutes, cooled to -30°C at a rate of -2.5°C/min, equilibrated at -30°C for 5 minutes, and finally at 2.5°C/min Melting behavior was evaluated by heating from -30°C to +100°C at a rate of one minute. To determine ΔH ¹ and ΔH ² a final heating ramp was used. ^ΔH1 is the area between the DSC curve and the baseline between 15°C and 35°C, and ^ΔH2 is the area between 35°C and the temperature at which the lotion composition is completely liquid, or 35°C and the temperature at which the lotion composition contains only In the case of a component that melts above 100°C, the area between the DSC curve and the baseline below the temperature at which no further melting occurs below 100°C. As an example, a lotion composition of the present invention comprising about 40% stearyl alcohol, about 30% mineral oil and about 30% petrolatum has a ^ΔH2 / ^ΔH1 value greater than 9 and a ^ΔH2 value greater than 60 J/g .

In one embodiment, the lotion composition present on the surface of the fibrous structure and/or sanitary tissue product, and/or on the surface treatment composition present on the surface of the fibrous structure and/or sanitary tissue product, is present in an amount of At least about 0.5 g/m ² , and/or at least about 1.0 g/m ² , and/or at least about 1.5 g/m ² per user contact surface. In another embodiment, the lotion composition present on the surface of the fibrous structure and/or sanitary tissue product, and/or on the surface treatment composition present on the surface of the fibrous structure and/or sanitary tissue product, content of about 0.5 g/ ^m2 and/or about 1.0 g/ ^m2 and/or about 1.5 g/ ^m2 to about 10 g/m2 and/or to about 8 g/m2 and/or to about 10 g/ ^m2 and/or to about 8 g/ ^m2 and/or to About 6g/m ² .

carrier

As used herein, a "carrier" is a substance that can be used to dilute and/or emulsify the agents forming the surface treatment composition and/or lotion composition to form a dispersion/emulsion. The carrier may be present in the surface treatment composition and/or lotion composition, especially when the surface treatment composition and/or lotion composition is applied to the fibrous structure. The vehicle can dissolve the components (true solution or micellar solution), or the components can be dispersed throughout the vehicle (dispersion or emulsion). The carrier for suspensions or emulsions is typically their continuous phase. That is, the other components of the dispersion or emulsion are dispersed throughout the carrier at the molecular level or as discrete particles.

Suitable substances that can be used as carriers in the present invention include hydroxyl functional liquids, including but not limited to water. In one embodiment, the lotion composition comprises less than about 20%, and/or less than about 10%, and/or less than about 5%, and/or less than about 0.5% by weight of a carrier, such as water. In one embodiment, the surface treatment composition comprises greater than about 50%, and/or greater than about 70%, and/or greater than about 85%, and/or greater than about 95%, and/or greater than about 98% by weight of the carrier , like water.

Processing aids

Processing aids can also be used in the lotion compositions of the present invention. Non-limiting examples of suitable processing aids include brighteners, such as TINOPAL CBS-X ^(R) , available from CIBA-GEIGY of Greensboro, NC.

Non-limiting examples of lotion compositions

Example 1 of the lotion composition: Stearyl Alcohol C01897* 40%w/w Snow White Vaseline V28EP** 30%w/w Pink Mineral Oil** 30%w/w

*Purchased from Procter & Gamble Chemicals, Cincinnati, USA

**Purchased from Crompton Corporation

The lotion composition has a melting point of about 51°C and a melt viscosity of about 17 m*Pas at 56°C when measured at a shear rate of 0.1 1/s. The mineral oil used in this formulation has a viscosity of about 21 mPa*s at 20°C. The lotion composition can be applied to one or both surfaces of the fibrous structure at a total add-on of 3.6g/ ^m2 , 4.2g/ ^m2 , 6g/ ^m2 , 7.2g/ ^m2 , 8.4g/ ^m2 and 11.4 g/m ² .

Method of treating fibrous structures and/or sanitary tissue products

a. Transferable agent and/or surface treatment composition:

Any contact or non-contact application method suitable for applying the transferable agent and/or surface treatment composition can be used, such as spraying, dipping, filling, printing, slot extrusion, web gravure printing, flexographic printing, offset printing Printing, screen printing, masking or stencil application methods, and mixtures thereof, to apply transferable agents and/or surface treatment compositions to fibrous structures and/or sanitary tissue products, and/or to be present in On the lotion composition on the fibrous structure and/or the surface of the sanitary tissue product. The transferable agent and/or surface treatment composition can be applied to the fibrous structure and/or the sanitary tissue product before, simultaneously with, or after applying the lotion composition to the fibrous structure and/or sanitary tissue product. The treating agent and/or surface treatment composition may be applied during papermaking and/or converting, particularly if applied to the layered fibrous structure and/or the outer plies of a sanitary tissue product comprising such a layered fibrous structure.

In one embodiment, the surface treatment composition is applied by an application method that provides relatively high surface area coverage on the surface of the fibrous structure and/or sanitary tissue product. Examples of such suitable methods of application include, but are not limited to, printing, slot extrusion, and/or spraying with fine particles (although spraying has the disadvantage of generating an aerosol if high area coverage is to be achieved).

b. Transferable agent and/or lotion compositions:

Any contact or non-contact application method suitable for applying the transferable agent and/or lotion composition may be used, such as spraying, dipping, filling, printing, slot extrusion, web gravure, flexography, rubber Printing, screen printing, masking or stencil application methods, and combinations thereof, for applying transferable and/or lotion compositions to fibrous structures and/or sanitary tissue products and/or present in fibrous structures and and/or on the surface treatment composition on the surface of a sanitary tissue product. The transferable agent and/or lotion composition can be applied to the fibrous structure and/or the sanitary tissue product before, simultaneously with, and/or after the surface treatment composition is applied to the fibrous structure and/or sanitary tissue product . In one embodiment, the transferable agent and/or lotion composition is applied to the surface treatment composition present on the fibrous structure and/or surface of the sanitary tissue product.

In one embodiment, the transferable agent and/or lotion composition is applied by an application method on the surface of the fibrous structure and/or sanitary tissue product, and/or on the surface of the fibrous structure and The surface treatment composition on the surface of the sanitary tissue product and/or provides relatively low surface area coverage such that areas of the surface treatment composition and areas of the lotion composition create a user contact surface. Examples of such suitable methods of application include, but are not limited to, spraying, especially spraying with a rotating disc, printing, slot extrusion in stripes and/or other patterns.

In one embodiment, the surface treatment composition may be added to the fiber furnish that will form the outer layer of the multilayer fiber structure. The transferable agent and/or lotion composition may be applied to the surface formed by the outer layers of the multilayer fibrous structure.

In one embodiment, the surface treatment composition is applied to the surface of the fibrous structure during manufacture of the fibrous structure, such as before and/or after drying the fibrous structure. The transferable agent and/or lotion composition can then be applied to the surface treatment composition on the surface of the fibrous structure during the converting process.

In one embodiment, when the lotion composition is applied to the surface treatment composition, the surface treatment composition comprises less than about 5% and/or less than about 3% and/or less than about 1% and/or Or less than about 0.5% moisture.

Applying a transferable agent and/or lotion composition to the fibrous structure:

In one embodiment, the transfer agent and/or lotion composition is applied to the fibrous structure and/or sanitary tissue product immediately after the surface treatment composition is applied to the surface of the fibrous structure. The fibrous structure and/or sanitary tissue product spans about 5 meters between the two operations. The commercially available rotary spray application system RFT-Compact-III (available from Weitmann & Konrad GmbH & Co KG, Leinfelden Echterdingen, Germany) with applicator heads for the tissue and textile industry was modified for the practice of the invention. The applicator head was equipped with 5 sets of rotating discs (1/1 type) and had an effective application width of 448 mm. At the top, bottom and back of the applicator head, replace the applicator head housing with water-heated walls. The entire unit is then insulated from the outside world. Using two of these modified applicator heads, mounted facing each other, makes it possible to treat both sides of the fibrous structure and/or sanitary tissue product simultaneously. The dosing unit was supplied with water of the desired temperature using a heating unit with an integrated pump (type W60/10-12/40 from Kelviplast GmbH, Germany). Specifically, the design of the heating element was chosen such that the temperature within the applicator head was within +/- 2°C of the target temperature. The transferable agent and/or lotion composition infeed of the applicator head connects the heat traced tubing to the heat pump that connects the heat traced tubing to the heated containing molten transferable agent and/or lotion composition 100 liter storage tank for food. The return line from the applicator feeds back into the heated storage tank. A heated flow meter is installed in the supply line of the lotion composition between the pump and the applicator head. A flow meter (Promass 63M, available from Endress & Hauser, Switzerland) is connected to the control unit of the RFT-Compact-III system, which is then used to control the transferable agent and/or lotion composition pump (gear pump of the Labu Brox type) , to deliver the desired transferable agent and/or lotion composition to the applicator head.

No changes were made to the setting, shape and dimensions of the rotating surface of commercially available applicator heads. Each set of rotating surfaces consists of 2 rotating discs stacked on top of each other. The transferable agent and/or lotion composition supplied to the two rotating surfaces of each stack is divided equally. The disc has a diameter of about 98mm. The five individually stacked rotating surfaces are spaced about 112 mm apart. The first, third and fifth sets of rotating surfaces are vertically staggered relative to the second and fourth sets of rotating surfaces to avoid interference between droplets of horizontally overlapping liquid streams. These sets of rotating surfaces are commercially available from Weitmann & Konrad GmbH & Co, Germany (size 1/1, models 618996 [top set] and 618997 [bottom set]). The applicator runs horizontally with a distance of about 154 mm between the fibrous structure and/or sanitary tissue product and the center of the disc. The fibrous structure and/or tissue product runs vertically between the two applicator heads, from top to bottom. Governed by windows in the housing between the rotating surface and the fibrous structure and/or sanitary tissue product, except that the two outer overlapping rotating surfaces of the applicator only cover 112mm each, The CD width of the overlay on the sanitary tissue product is about 224 mm. At each location, the flow of the two stacks of rotating surfaces overlaps. Even distribution to a single stack of discs was achieved with a 1 mm diameter throttle valve installed between the rotating disc infeed and the central supply tube of the applicator. The temperature of the transferable agent and/or lotion composition is controlled at a defined value by heating the temperature of the storage tank, piping, and applicator head to the desired value. Adjust the flow rate to obtain the desired addition of fibrous structure. At the time of application, the fibrous structure and/or sanitary tissue product is typically maintained at room temperature. After being pressed into the fibrous structure and/or sanitary tissue product, the transferable agent and/or lotion composition solidifies almost instantaneously.

Test Methods

A. Transferable Agent Transfer Test Method

The amount and/or efficiency of transfer of the transferable agent to the opposing surface can be measured by the following method.

First, the amount of lotion present in and/or on the surface of the fibrous structure is measured. Methods of measuring this amount are known in the art, such as pulsed nuclear magnetic resonance (PNMR) and near infrared spectroscopy. Examples of methods are described in US Patent 6,261,580, the description of which is incorporated in relevant part herein by reference.

Next, measure the amount of lotion transferred to the opposite surface. Again, methods for doing so are known in the art. An example of this method is described in US Patent 6,261,580.

The transferable dose from the treated tissue paper product was determined using a Sutherland Rub Tester (available from Testing Machines, Inc. of Amityville, N.Y.). The tester uses a motor to rub a treated tissue sample 5 times against an impermeable transfer surface. Any transferable agent transferred from the treated sample was extracted from the transfer surface and the amount transferred was determined using gas chromatography.

Prior to transferable agent transfer testing, the fiber structure samples to be tested should be conditioned according to Tappi Method #T402OM-88. At this point, the samples were preconditioned for 24 hours at a relative humidity level of 10% to 35% and a temperature range of 22 to 40°C. After this pretreatment step, the samples should be treated for 24 hours at a relative humidity of 48% to 52% and a temperature range of 22°C to 24°C. Transfer testing should also be performed within the confines of a room with constant temperature and humidity.

Next, a 76 cm (30") x 101 cm (40") sheet of Crescent #300 cardboard was purchased from Cordage Inc. of Cincinnati, Ohio. Using a paper cutter, cut out six pieces of cardboard measuring 5.7 cm x 18.4 cm (2.25" x 7.25"). On the white side of the cardboard, draw two lines parallel to the short dimension and 2.9cm (1.125") from the top and bottom largest edges. Use a ruler as a guide to carefully mark the length of said lines with a blade. Score to about the full piece About half the depth of the thickness. This score enables the cardboard/felt combination to fit snugly around the weight of the Sutherland Rub Tester. Draw an arrow on the side of the cardboard running parallel to the long dimension of the cardboard on the side of this score.

Then, six pieces of black felt (F-55 or equivalent, available from New England Gasket in Bristol, Conn.) were cut to the dimensions 5.7 cm x 21.6 cm x 1.6 cm (2.25" x 8.5" x 0.0625"). The felt Place on top of the unscored green side of the cardboard so that the long edges of both the felt and the cardboard are parallel and in line. Make sure the nap side of the felt is facing up. Also allow about 1.3cm (0.5") to stick out over the top of the cardboard and outside the bottom largest edge. Cut the fiber structure sample to the same size as the felt and center it on the felt. The overhanging edges are folded invisibly, and the sample and felt are glued (Scotch. TM. Tape available from 3M, St. Paul, Minn. is suitable) to the back of the cardboard to complete the felt/cardboard/sample preparation.

The 1.8 kg (4 lb) weight has an effective contact area of 4 cm ² (26 cm ² ), providing a contact pressure of 6.8 kPa (1 psi). Since the contact pressure can be changed by changing the rubber pads mounted on the weight surface, it is important to use only rubber pads supplied by the manufacturer (Brown Inc., Mechanical Services Department, Kalamazoo, Mich.). If these pads become hard, worn or chipped, they must be replaced.

When not in use, the weight must be placed such that the pad does not support the total weight of the weight. Weights are best stored on their side.

For measurements on actual tissue/paperboard combinations, place the transfer surface (glass mirror) on the base plate of the tester with the mirror resting against the retaining pins. A retaining pin prevents the mirror from moving during the test.

Clamp the calibration felt/cardboard/sample to the four pound weight so that the cardboard side touches the weight pad. Make sure the cardboard/felt/tissue combination is flat against the weights. Hook this weight onto the tester arm. The felt/cardboard/tissue sample must lie flat against the mirror and must be in 100% contact with the mirror surface.

Next, start the tester by pressing the "push" button. At the end of five strokes, the testing machine will automatically stop.

Remove the weights from the felt covered cardboard. Check tissue samples. If it tears, discard the felt and tissue paper and start over. If the tissue sample is intact, remove the felt covering the cardboard from the weight. Weight three additional felt/cardboard/tissue samples, ensuring enough lotion has been transferred to get accurate measurements.

Repeat the above steps to obtain six parallel results for each test condition.

After all conditions have been measured, remove and discard all felt. The felt strips are not reused. Cardboard supports are used until they bend, tear, fail, or no longer have a smooth surface.

Wash each mirror once with a four milliliter aliquot of toluene into a beaker. Extracts were transferred to sample vials and dried using dry nitrogen. The mirror was washed a second time with a two milliliter aliquot of toluene, and the liquid was transferred and dried as described above.

One milliliter of toluene was then added to each sample vial before sealing the vial. The vial was then gently agitated to dissolve the transferred mirror extract. The content of transferable agent in the dissolved extract is then measured using known gas chromatography methods.

The known standards commonly used in the art were used to determine the recovery constants for the transferable agent (for the wash and transfer steps) and to determine the equipment constants for the gas chromatograph.

The chromatographically determined transferable dose was divided by the recovery constant to estimate the transferable dose on the mirror. Results are reported in milligrams.

B. Test Method for Relative Concentration of Composition on Surface

The relative concentration of the composition on the fibrous structure and/or surface of the sanitary tissue product can be determined by using near-infrared spectroscopy, especially if the sample contains a hydrocarbon-containing composition. Near-infrared spectroscopy can use a filter photometer or other near-infrared instrument, but it must be configured for backscatter detection. Use the appropriate wavelength.

Place the fibrous structure and/or sanitary tissue product under a near-infrared instrument and take a reading. The sample is then flipped over to take a reading from the opposite side of the sample.

In addition to near-infrared, mid-infrared spectroscopy with suitable equipment and wavelengths can also be used to determine the relative concentration of the composition on the fibrous structure and/or surface of the sanitary tissue product.

All documents cited in the Detailed Description of the Invention are, in relevant part, incorporated herein by reference; the citation of any document is not to be construed as an admission that it is prior art to the present invention.

While particular embodiments of the present invention have been illustrated and described, it would be obvious to those skilled in the art that various other changes and modifications can be made without departing from the spirit and scope of the invention. It is therefore intended to cover in the appended claims all such changes and modifications that are within the scope of this invention.

Claims (11)

1. fibre structure that comprises transferable agent, wherein said transferable agent is associated with described fibre structure, make the user between the operating period by weight the transferable agent greater than 6% be transferred to the surface from described fibre structure.

2. fibre structure as claimed in claim 1, wherein said fibre structure comprise by the weight of described fibre structure less than 50% transferable agent.

3. fibre structure as claimed in claim 1, wherein said transferable agent is associated with being present in the lip-deep user's contact surface of described fibre structure, and the amount that preferred described transferable agent is associated with described user's contact surface is less than 10g/m ²

4. fibre structure as claimed in claim 1, wherein said transferable agent is present in the detergent composition, described detergent composition also comprises the compound that is selected from the group of being made up of following compound: hydrocarbon, fatty acid ester, alcohol ethoxylate and their mixture, described detergent composition preferably also comprise softening agent.

5. fibre structure as claimed in claim 1, wherein said transferable agent comprises skin-care agent.

6. fibre structure as claimed in claim 1, the lip-deep concentration that wherein said transferable agent is present in described fibre structure is higher than the concentration that is present in the described fibre structure, and preferably described transferable agent covers the whole surf zone less than the surface of described fibre structure.

7. fibre structure as claimed in claim 6, the surface of wherein said fibre structure also comprises surface treating composition, and preferred described surface treating composition comprises the surface conditioning agent that is selected from the group of being made up of following material: the C of polymer, hydrocarbon, wax, oil, siloxanes, quaternary ammonium compound, fluorocarbon, replacement ₁₀-C ₂₂The C of alkane, replacement ₁₀-C ₂₂Alkene, polyol, carbohydrate derivative and their mixture.

8. fibre structure as claimed in claim 7, the flexibility value that wherein said fibre structure demonstration has is greater than the flexibility value of the described fibre structure that does not contain described transferable agent.

9. fibre structure as claimed in claim 1, wherein said transferable agent comprises medicinal agent, and the described medicinal agent of preferred clinical useful amount is transferred to user's skin from described fibre structure.

10. a single or multiple lift approaches the page or leaf sanitary tissue products, and described goods comprise fibre structure as claimed in claim 1.

11. a fibre structure that is used for handling having transferable agent is to make the method as claim 1 to 9 fibre structure as described in each, described method comprises the step that fibre structure that transferable agent and needs are handled is associated, make the user between the operating period by weight the transferable agent greater than 6% be transferred to the surface from described fibre structure.