MXPA06012195A - Tissue paper with protruding lotion deposits. - Google Patents

Abstract

A paper tissue and products made from paper tissue, such as paper handkerchiefs, facial tissues, bath and cosmetic tissues, paper tissue wipes of any kinds and the like. The invention also relates to tissue paper including deposits of lotions on the surface of the tissue paper that protrude a significant height above the average plan of the tissue.

Description

in different ways to form the finished product, for example, by engraving and / or gluing the multi-leaf structure. In the present, the finished products are mentioned as tissue paper products. Finished products made with more than one sheet have internal woven (or sheet) surfaces facing inward and two outer surfaces facing outward. Also, for a long time it has been recognized that the important physical attributes of these tissue papers are their strength and thickness / bulk, their smoothness and uniformity and their absorbency. The softness and uniformity refer to the tactile sensation perceived by the consumer when he takes a particular product, rubs it against the skin or wrinkles it with his hands. Thick but soft disposable paper products are known, for example, in the form of disposable tissues. For example, TempoR, marketed by The Procter & Gamble Company, is a multi-sheet paper product, thick and soft and with an approximate size of 0.3 mm. A high caliber transmits to the consumer the sensation of great resistance, in wet and dry state. In particular, high wet strength, also known as wet break resistance, prevents tearing or breaking which in the case of a disposable handkerchief involves contamination of the user's hand with mucus or other organic fluids. A common method for improving the uniformity of the tissue paper surface is to calender the material. Another way to improve the sense of uniformity perceived by the users of tissue paper products, such as handkerchiefs, is by supplementing the composition of the tissue paper with some additives during the papermaking phase and / or during the conversion phase. These additives can have the effect of uniforming the tissue paper in such a way as to make the user feel it more smooth or even. Alternatively or additionally, some additives have an effect on the skin of the user when touching or using the tissue paper product, for example, it softens the skin, moisturizes the skin. These latter effects are usually achieved by a partial transfer of the additives to the skin during use, thus prolonging the effect of the additives on the skin, beyond the contact between the tissue paper product and the skin. Softening lotions are usually hydrophobic in nature or contain hydrophobic compounds. The presence of lotion on the surface of the tissue paper can have adverse effects on the properties of said tissue paper. First, covering the surface of the hydrophilic tissue with a hydrophobic lotion can reduce the absorbency of the fabric or the speed of absorbency. This has an undesired effect for the user. For example, in a tissue, it may take more time for the nasal mucus to be absorbed by a tissue paper with lotion than another tissue without it. Secondly, the lotion can migrate from the surface of the tissue through the structure of the tissue paper, which makes the tissue paper less hydrophilic and makes less surface lotion available to give the skin smoothing benefits. A traditional way of responding to the expected migration of the lotion over time is to use a relatively high amount of lotion to ensure some availability of the lotion on the surface of the fabric, even after a prolonged period of storage. This, in turn, causes excess lotion in the newly produced papers, which causes an unpleasant oily sensation during use (and further reduces the absorbency of the tissue paper). Third, the lotions that coat the fibers are less susceptible to being released by the tissue during use and, therefore, less transferable to the wearer's skin. Furthermore, there is an economic advantage to using a reduced amount of lotion in the tissues, due to the relatively high cost of the lotion's raw material. In consecuense, it is necessary to provide a tissue paper that exhibits a relatively high amount of lotion available on the surface of the tissue in the form of different deposits protruding at a significant height from the tissue surface. Furthermore, there is a need to achieve benefits of improved fabric uniformity, improved tissue absorbency and improved transferbility of the lotion to users' skin, without any of said improvements being detrimental to the other.

BRIEF DESCRIPTION OF THE INVENTION In order to solve the questions referred to the prior art, the present invention provides a tissue paper containing first and second opposing surfaces characterized in that the tissue includes a lotion on at least one of the surfaces of the tissue paper. The lotion is present in different deposits, substantially protuberant on the first surface, characterized in that the tissue paper has a volume equal to or less than 5.2 cm 3 / g of tissue in which the protruding deposits have an average height of at least 30 μm.

BRIEF DESCRIPTION OF THE FIGURES Figure 1 is a representation of the elevations of the tissue surface of Example 1. The fabric is treated with 2.1 g / square meter of lotion. Figure 2 is a representation of the tissue surface of the fabric of Example 1, treated with the formulation of Example 1 at 2.1 g / m2, which shows the height of the protruding deposits in gray values. The white areas are protruding.

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a tissue paper of a high degree of uniformity and smoothness of the surface, high absorbency, high strength and high volume. These characteristics that apparently compete with each other were combined according to the concept of the present invention. A "lotion" is a composition that is added to the fabric preferably in the conversion phase in order to improve the softness / uniformity and has softening effect on the skin. Part of the lotion can be transferred from the tissue to the wearer's skin with the use of the tissue paper article. Therefore, it produces a longer lasting effect on the skin.

The lotion can alternatively be called a lotion or composition for uniforming or softening. The lotion may contain softening and / or disentangling agents, emollients, immobilizing agents and mixtures thereof. Suitable softening and / or disentangling agents include quaternary ammonium compounds, polysiloxanes and mixtures thereof. Suitable emollients include propylene glycol, glycerin, triethylene glycol, spermaceti wax or other waxes, petrolatum fatty acids, fatty alcohols and fatty alcohol ethers having from 12 to 28 carbon atoms in the fatty acid chain, mineral oil, especially oil of silicone for example, dimethicone and isopropyl palmitrate, and mixtures thereof. Suitable immobilizing agents include waxes, fatty alcohols, fatty acids, for example ceresin wax, microcrystalline wax, petroleum waxes, fisher tropsh waxes, paraffin waxes, stearyl alcohol and paraffins, polyhydroxy fatty acid esters, polyhydroxy fatty acid amides , and mixtures of these. In most cases the lotions contain at least one immobilizing agent and an emollient. The lotions can be emulsions or dispersions. Other optional components include perfumes, antibacterial active ingredients, antivirals, disinfectants, active pharmaceutical active ingredients, film formers, deodorants, opacifying agents, astringents, solvents and the like. Particular examples of the lotion components include camphor, thymol, menthol, chamomile extract, aloe vera, calendula officinalis. "Protruding reservoir" means a protruding reservoir defined as a lotion reservoir in a protruding tissue paper (in some embodiments, at least 25 microns) above the average plane of the tissue surface. "Average height of protruding deposits" means the average height of each data point (provided by the method described) that is at least 25 micrometers above the average plane of the tissue surface. The terms "tissue paper", "tissue paper web", "tissue web", "web", "paper" and "web" are interchangeable herein. The present invention is useful in tissue paper including, but not limited to, conventionally felt-pressed tissue paper; High volume densified pattern tissue paper; High volume, non-compacted tissue paper and dry paper with through air. The tissue paper can be homogeneous or comprise multiple layers, and tissue paper products made with these structures can be single-ply or multi-ply. The tissue paper preferably has a basis weight of approximately 10 g / m2 to 65 g / m2 and an approximate volume of 5.2 cubic centimeters / g or less (preferably equal to or less than 5.0 cubic centimeters / g.) More preferably, the approximate basis weight is 40 g / m2 or less Conventionally pressed tissue paper and methods for its preparation are well known in the industry, such paper is usually made by depositing the raw material to make the paper into a porous wire mesh, Often referred to in the industry as Fourdrinier wire, after depositing the raw material in the mesh it is called a weft.The water is removed from the weft by pressing it and drying it at high temperatures.The drained weave is further pressed and dried with an apparatus Air pulley known in the industry as a Yankee dryer Some useful wood pulps here are chemical pulps, such as Kraft pulp, sulphite pulp and sulphate pulp, as well as mechanical pulps including, for example, crushed wood, thermomechanical pulps and chemically modified thermomechanical pulps. In addition to papermaking fibers, the cellulose used to make tissue paper structures can carry other components or be added to other materials as is already known in the industry or can be known later. The desirable types of additives will depend on the particular end use that has been contemplated for the fabric canvas. For example, in products such as toilet paper, paper towels, facial wipes and the like, high wet strength is a desirable attribute. Therefore, it is often desirable to add to the cellulose to make paper, chemical compounds known in the industry as resins for wet strength. A general dissertation on the types of resins for wet strength used in the paper industry can be found in the monographic series TAPPI onograph Series no. 29, "Wet Strength in Paper and Paperboard, Technical Association of the Pulp and Paper Industry" (Wet Strength in Paper and Cardboard, Technical Association of the Pulp and Paper Industry) (New York, 1965). The tissue paper object of the present invention can have a moisture content between 0 and 20% (w / w), although it has been found that better results are obtained with a moisture level of at least 4% (w / w) ). The tissue paper object of the present invention can be formed from a single layer of material or from a multilayer tissue paper web. The terms "multilayer tissue paper web, multilayer paper web, multilayer weft, multilayer paper web weft, and multilayer paper product" are interchangeable in the industry to refer to paper canvases made of two or more watery paper canvases to make cellulose which are preferably composed of different types of fibers; the fibers are generally long fibers of softwood and relatively short fibers of hardwood, as used in the manufacture of tissue paper. The layers are preferably formed by depositing slurries of diluted fiber at separate flow rates on one or more endless porous surfaces. When the layers are initially formed on separate porous surfaces, they can then be combined, when still wet, to form a multilayer tissue paper web. The "tissue paper products" object of the present invention are finished products such as kitchen towels or tissues made from one or multiple sheets of the tissue papers described above. Each sheet of a multi-sheet paper product can be made from various materials or manufactured in various ways during the steps of manufacturing or converting the paper. As used herein, the term "single-ply tissue paper product" means that it comprises a tissue paper sheet.; the sheet may be of a substantially homogeneous nature or may be a multilayer tissue paper web. As used herein, the term "multi-sheet tissue paper product" means that it consists of more than one sheet of tissue paper. The sheets of a multi-sheet tissue paper product can be substantially homogenous in nature or multi-layer tissue paper webs. "Base weight of lotion of protruding deposits" is the concentration of lotion, expressed in grams per square meter, within the protruding deposits of lotion in the tissue. This is an average value of the measured deposits. The base weight of the protruding deposit lotion is determined as described in the method below. The "density of protruding deposits" is the average amount of deposits per area of tissue paper, expressed in square centimeters ~ 1.

"Base weight of the tissue paper" is the total concentration of lotion, expressed in grams per square meter, of lotion in the tissue (also called base weight or total or total concentration). The basis weight can be measured according to any standard method, for example, extraction in solvent or deduction from the process conditions (amount of lotion deposits in the fabric divided by the total area of the latter). It is desirable to provide a soft tissue containing a lotion that can be easily transferred to the skin of the wearer of the tissue paper. In accordance with the present invention, careful selection of the distribution of the lotion on the tissue, such as a conglomerate of different deposits, can improve the transferability of the tissue paper to the wearer's skin. with a significant height above the average plane of the tissue surface will have a greater transferability to the wearer's skin and, consequently, will contribute better to the overall uniformity of said tissue. It has been found that the deposits that provide the maximum benefits are those protruding at least 25 above the average plane of the tissue surface Preferably, the deposits protrude at least 30 μ? t ?, 35 μ? t ?, or at least 50 μ? t ?. The beneficial effects are they can be better observed when the protruding deposits are applied on tissue paper of limited volume (ie, less than 5.2 cm3 / g, or 5.0 cm3 / g). The lotion in the fabric is equal to or less than 9 g / m2, less than 6 g / m2, less than 4.5 g / m2, 3.0 g / m2 and with a greater preference, less than 2 g / m2. In some embodiments, an R relationship is considered: Base weight of the lotion of the protruding deposits (g / square meter) R = Base weight of the tissue lotion (g / m2) The beneficial effects are observed when R is greater than 0.005. R may also be 0.01, 0.02, 0.05, 0.1, 0.2, or 0.3 in preferred embodiments. It has been found that the beneficial effects in some embodiments are obtained when the density of the protruding deposits is at least 1, 3, 5 or 10 per cm 2 of tissue. In some embodiments, the lotion can be visualized colored with osmium tetroxide, as described herein. In other embodiments, the lotion can be visualized by infrared spectroscopy (IR spectroscopy), which is the method cited herein. In such embodiments, the total basis weight of lotion on the fabric is typically at least 0.3 grams per square meter, 0.6 grams per square meter, 1.0 grams per square meter, 1.5 grams per square meter or 2.5 grams per square meter In some embodiments , it has been found that a relatively large area of fabric covered by relatively good height (or elevation) deposits is preferred. This gives a product with a superior transferability of the lotion. This can be expressed through the relationship R2, characterized by The area of protruding deposits measured at the threshold value of claim 1 (mmA2) Tissue area (mmA2) * Weight of the lotion in the tissue (g / m2) R2 is at least 0.005, 0.001, at least 0.05 or at least 0.08.

In some embodiments, the invention relates to multi-sheet tissue paper product. When the multi-sheet tissue paper product is comprised of two sheets, it has been found that the invention works well if at least one of the outer surfaces (surfaces facing outward) has more lotion than its corresponding internal surface (inward facing surfaces). ). This can be determined with a scanning electron microscope. When the multi-sheet tissue paper product has at least three sheets, it has been found that the transferability of the lotion is adequate if at least 60%, at least 70%, at least 80% or at least 90 % of the lotion is located on the outer sheets. Clearly, the lotion present in the inner sheet (s) contributes to a much lesser extent in the transfer of the lotion to the skin of the users.

Lotion The present invention, as described herein, focuses particularly on the softening lotion. It should be noted that any type of additives or compounds could be applied according to the described process, as the physical characteristics (for example, melting temperature, viscosity), and the application temperature are adjusted to obtain the distribution pattern desired of the additives or compounds applied to the surface of the tissue paper. These additives or compounds could include: moisturizing lotion, soap, moisturizers, sunscreen, make-up ingredients, anti-aging, disinfectants, or more generally additives / compounds from the cosmetic and therapeutic areas, detergents, soaps, waxes, cleaning additives and more generally compounds for cleaning, maintenance, protection and treatment of objects, surfaces or mechanical parts. Lotions are in most instances heterogeneous compositions. They may contain solids, crystalline gel structures, polymeric material below the glass temperature, a multiplicity of phases (such as oily and aqueous phases) and / or emulsified components. It can be difficult to determine precisely the melting temperature of the lotion, ie, difficult to determine the transition temperature between the liquid and quasi-liquid form, the quasi-solid and the solid form. The terms melting temperature, melting point, transition point and transition temperature are used interchangeably herein and have the same meaning. For the purposes of the present invention it is considered that the melting temperature refers not only to the definition of the shape or condition of the lotion (liquid, solid, quasi-liquid, quasi-solid), but also to its Theological properties. For the purposes of the present invention, it is defined that the liquid or quasi-liquid lotion can flow, move and migrate, for example, under the force exerted during the application process. Solid or quasi-solid lotions can not flow freely and are somewhat immobilized at their site. For example, it will be said that a lotion is liquid or quasi-liquid if it can be fed on rotating surfaces and can be expelled there under the conditions of the process used. It will be said that a lotion is solid or semi-solid if it does not migrate with significant freedom from the surface to the internal structure of the tissue at room temperature, that is, 23 ° C until the product is used as usual. The lotion may contain an agent to treat a surface. Non-limiting examples of suitable surface treatment agents that can be included in the lotion can be selected from the group consisting of: polymers such as polyethylene and derivatives thereof, hydrocarbons, waxes, oils, silicones (polysiloxanes), quaternary ammonium compounds, fluorocarbons, substituted C10-C22 alkanes, substituted C10-C22 alkenes, in particular fatty alcohol derivatives and fatty acids (such as fatty acid amides, fatty acid condensates and fatty alcohol condensates), polyols, polyol derivatives (such as esters and ethers), sugar derivatives (such as esters and ethers), polyglycols (such as polyethylene glycol), and mixtures thereof. The lotion may comprise oils and / or emollients and / or waxes (each and every one of which may be transferable agents) and / or immobilizing agents. In one example, the lotion contains approximately between 10% and 90% of a liquid oil and / or emollient and approximately between 10% and 50% of immobilizing agent and / or approximately between 0% and 60% of petrolatum and optionally a cbp carrier . The lotion can be heterogeneous. They may contain solids, gel structures, polymeric material, a multiplicity of phases (such as oily and aqueous phases) and / or emulsified components. It can be difficult to determine precisely the melting temperature of the lotion, that is, it is difficult to determine the transition temperature between the liquid and quasi-liquid form, the quasi-solid form and the solid form. The terms melting temperature, melting point, transition point and transition temperature are used interchangeably herein and have the same meaning. The lotion can be semi-solid, high viscosity so that it does not flow substantially without activation during the life of the product or the gel structures. The lotion can be diluted by friction and / or it can strongly change its viscosity at about the temperature of the skin to allow transfer and to be easy to spread on the wearer's skin. The lotion can be in the form of emulsions and / or dispersions. In one example of a lotion, said lotion has an approximate water content of less than 20% and / or approximately less than 10% and / or approximately less than 5% or approximately less than 0.5%. In another example, the lotion may have an approximate solids content of at least 15% and / or at least about 25% and / or at least about 30% and / or at least about 40% and / or at least 100% and / or at least 95% and / or at least 90% and / or at least 80%. Non-limiting examples of suitable oils and / or emollients include glycols (such as propylene glycol and / or glycerin), polyglycols (such as triethylene glycol), petrolatum, fatty acids, fatty alcohols, fatty alcohol ethoxylates, fatty alcohol esters and ethers of fatty alcohol, fatty acid ethoxylates, fatty acid amides, fatty acid esters, hydrocarbon oils (such as mineral oil), squalene, fluorinated emollients, silicone oil (such as dimethicone), and mixtures thereof. Immobilizing agents include agents that can prevent the migration of the emollient to the tissue paper such that the emollient remains primarily on the surface of the tissue paper and / or tissue paper hygienic product and / or in the composition treating the surface on the surface of the tissue paper and / or the tissue paper hygienic product and facilitate the transfer of the lotion to the wearer's skin. The immobilizing agents can be used as agents for increasing the viscosity and / or gelifying agents. Non-limiting examples of suitable immobilizing agents include waxes (such as ceresin wax, ozokerite, microcrystalline wax, petroleum waxes, fisher tropsh waxes, silicone waxes, paraffin wax), fatty alcohols (such as cetyl and / or stearyl alcohol), fatty acids and their salts (such as metal salts of stearic acid), mono and polyhydroxyl fatty acid esters, mono and polyhydroxyl fatty acid amides, silica and silica derivatives, gelling agents, thickeners, and mixtures thereof. In one example the lotions contain at least one immobilizing agent and at least one emollient.

In one example, the lotion contains a sucrose ester of a fatty acid. The lotion may contain a transferable agent and, therefore, be considered a transferable lotion. A transferable lotion contains at least one transferable agent capable of being transferred to an opposite surface such as the wearer's skin during use. In one example, at least 0.1% of the transferable lotion present on the surface contacting the user is transferred to the user's skin during use. The amount of transferable composition that is transferred to the wearer's skin during use can be determined by known methods such as taking a sample with skin tape 3 times, after the wearer uses the tissue and / or toilet tissue of the user. tissue paper, with Tegaderm adhesive tapes, available from 3M, and to analyze the transferable composition or a component of the transferable composition of the tapes, assuming that all the components of the transferable composition are transferred in the same way. Other optional components that may be included in the lotion include vehicles, perfumes, especially long-lasting and / or persistent perfumes, antibacterial actives, antiviral actives, disinfectants, pharmaceutical actives, film formers, deodorants, opacifying agents, astringents, solvents, agents of refreshing feeling, and the like. Particular examples of lotion components include camphor, thymol, menthol, chamomile extracts, aloe vera, calendula officinalis, alpha bisabolol, vitamin E, vitamin E acetate. In one example, the lotion is present on the surface of the tissue paper and / or tissue paper hygienic product and / or in the composition treating the surface present on the surface of the tissue paper and / or tissue paper hygienic product at a level of at least 0.5 g / m2, and / or at least 1.0 g / m2 approximately, and / or at least 1.5 g / m2 approximately of the surface that makes contact with the user. In another example, the lotion is present on the surface of the tissue paper and / or tissue paper hygienic product and / or in the composition that treats the surface present on the surface of the tissue paper and / or tissue paper hygienic product at a level about 0.5 g / m2, and / or about 1.0 g / m2, and / or from about 1.5 g / m2 to about 0 g / m2 and / or about 8 g / m2 and / or about 6 g / m2 of the surface that makes contact with the user. As used herein, "carrier" is a material that can be used to dilute or emulsify the agents that form the composition treating the surface and / or the lotion to form a dispersion / emulsion. A vehicle may be present in the composition treating the surface and / or the lotion, especially during the application of the composition treating the surface and / or the tissue paper. The vehicle can dissolve a component (true solution or micellar solution) or it can be dispersed in it (dispersion or emulsion). The vehicle of a suspension or emulsion is generally its continuous phase. This means that other components of the dispersion or emulsion are dispersed in the vehicle at the molecular level or as separate particles. Suitable materials for use as a carrier of the present invention include hydroxyl-functional liquids, including, but not limited to, water. In one example, the lotion has a content of less than about 20% and / or less than about 10% and / or less than about 5% and / or less than about 0.5% w / w of a vehicle, such as water. In one example, the composition treating the surface has a content 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% p / p of a vehicle, such as water. It has been found that a suitable lotion in the present invention has a water content of less than 20%, less than 10%, less than 5% or less than 0.5%.

Lotion formulation example 1: It has been found that the present invention is particularly effective when the lotion has the following composition (weight / weight percent): Available from Procter &Gamble Chemicals, Cincinnati, USA. Sucrose esters of fatty alcohols, available from Procter &Gamble Chemicals, Cincinnati, USA. Available from Crompton Corporation Lotion formulation example 2: It has been found that the present invention is particularly effective when the lotion has the following composition (by weight / weight percent): Available from Procter &Gamble Chemicals, Cincinnati, USA. ** Available from Crompton Corporation Formulation Example 3 of the lotion: The present invention has proven to be particularly effective when the lotion has the following composition (weight / weight percent): Available from Procter &Gamble Chemicals, Cincinnati, USA. Sucrose esters of fatty alcohols, available from Procter &Gamble Chemicals, Cincinnati, USA.

The three formulations have been applied to the tissue described in Example 1 of tissue paper at aggregate levels of between 1.5 g / m2 and 6 g / m2 on each side. The conditions of the process and the equipment are described in the patent application entitled "Tissue paper with high transferability of lotion" ("Paper tissue with high lotion transferability") by J. Kleinwaeschter, D. Butz, C. Marcott and G. Gave Girolamo Data: Tissue paper example 1: The tissue paper used in the following examples is conventionally wet, dry-pressed, homogeneously pressed tissue paper with a basis weight of approximately 15.4 g / square meter. The paper web has a composition of approximately 40% NSK (Northern Softwood Kraft) and 60% eucalyptus. After papermaking, four sheets of paper are combined together in an off-line combination operation. The original pre-blended 4-sheet coil is subsequently converted to a 4-sheet tissue paper product. The original 4-leaf coil is unrolled and calendered between two smooth steel calender rollers followed by high-pressure embossing to achieve the joining of the sheets. Most of the tissue paper is not affected by high pressure embossing. Finally, the fabric was cut in the direction of the machine, followed by cuts in the transverse direction on canvases of approximately 21 cm x 21 cm, folded, stacked in stacks of 9 canvases and packed in individual pocket packages. The 4-sheet tissue paper product obtained according to the process described above has a basis weight of about 60 g / square meter (not including any applied lotion), a thickness of 0.27 mm, a volume of 4.5 cubic cm / g, a machine direction resistance of 504 g / cm (280 g / inch), a resistance in the transverse direction of 240 g / cm (610 g / inch), and a wet break of approximately 200 g. It contains a wet strength agent and a dry strength agent.

Tissue paper example 2 The tissue paper used in the following examples is conventionally wet, layered, dry-creped tissue paper with a basis weight of about 14.6 g / square meter. The outer layer contains about 100% eucalyptus fibers while the inner layer is composed of an NSK cellulose blend of about 85% (Northern Softwood Kraft), 10% CTMP and about 5% eucalyptus fiber. Both layers have approximately the same basis weight (symmetrically cut layers). After papermaking, four sheets of paper are combined together in an off-line combination operation. The original pre-blended 4-sheet coil is subsequently converted to a 4-sheet tissue paper product. The original 4-leaf coil is unrolled and calendered between two smooth steel calender rollers followed by high-pressure embossing to achieve the joining of the sheets. Most of the tissue paper is not affected by high pressure embossing. Finally, the fabric was cut in the direction of the machine, followed by cuts in the transverse direction on canvases of approximately 21 cm x 21 cm, folded, stacked in stacks of 9 canvases and packed in individual pocket packages. The 4-sheet tissue paper product obtained according to the process described above has a basis weight of approximately 60 g / square meter (not including any applied lotion), a thickness of 0.27 mm, a volume of 4.5 cubic cm / g, a resistance in the machine direction of 465 g / cm (1180 g / in), a resistance in the transverse direction of 220.5 g / cm (560 g / in), and a wet break of approximately 200 g. It contains a wet strength agent and a dry strength agent.

Methods: Tissue paper volume: tissue volume is defined as the reciprocal density value (in g / cm3). See column 13, lines 61-67 of U.S. Pat. No. 5,059,282 (Ampulski et al.), Issued October 22, 1991, which describes how the tissue paper density is measured. The paper is equilibrated at 23 degrees Celsius and 50% (= / - 2%) relative humidity for at least 2 hours before measurement. Average lotion aggregate level by solvent extraction (base weight of the lotion in the tissue): A representative sample of approximately 2 g of tissue treated with lotion is extracted by Accellerated Solvent Extraction (ASE) using an ASE 200 model, available from Dionex Corp., USA The following conditions are used: 11 ml_ extraction cell, solvent mixture: 50% acetone / n-hexane; temperature: 100 ° C (heat and static 5 minutes); pressure: 6.8 MPa (1000 PSI); Two cycles with 100% discharge. The solvent is evaporated and the residue is determined gravimetrically. The addition of lotion is then calculated Average lotion = weight of the extract in fal x base weight of the sample in ra / square meter] added in o Weight of the sample before extraction in [g] g / square meter Coloring with osmium: a square sample of tissue is cut to be analyzed approximately 4 cm x 4 cm from a flat area without engraving or bending (if necessary, a smaller area can be used). All samples are placed in open equidistant containers from an open 10 mL container of a 4% solution of Os04 (in water) under a glass dome to color in a shield. The coloring with steam is usually done for 24 hours. The duration of the coloring is not too critical and may be more or less prolonged depending on the affinity of the lotion with the osmium and the level of "darkening" desired. The coloring is interrupted when the best possible contrast between the points of the lotion and the substrate is achieved in the sample. Since the paper fibers will slowly take on the coloring of the osmium and darken, there is a point in the coloring process in which the lotion will not react anymore but it will be the paper fibers that will continue to do so, reducing the contrast between the fibers. lotion and fibers. Preparation of the sample for surface analysis: the sample tissue is placed on a slide of approximately 5 cm x 7.6 cm (2 inches x 3 inches) with the surface to be analyzed upwards. The ends of the sheet were carefully taped to the slide to produce a flat canvas. Surface Analysis: the assembled samples described above were analyzed with a GFM Primos 3D optical measurement system (Teltow, Germany), based on a digital strip projection technique. The system has a 2.7x2.1 cm field of view and a detector that contains 1300x1000 pixels. The operating software was Primos version 4.074. If possible, the entire field of vision should be used; only if the sample does not contain a large enough area without recording or bending, a smaller field of view should be used for the analysis. The system produces a grayscale camera image (GS image) for each sample analyzed, as well as a 3D surface height image (3D image) calibrated in micrometers. The GS image was exported from the Primos program as a BMP image for further processing. The 3D image was processed using the alignment function of the Primos program, which removes the tilt, and was exported with the Fringe File Version 1 (FD3) format. Surface Data Image Analysis: both the GS image (BMP) and the 3D image (FD3) were imported into MatLab (MathWorks, Natick, MA, USA) for further image processing. The extension functions of the Image Processing tools of MatLab v4.2 were used to process the data. The 3D image was smoothed with a convolution filter average with kernel size 151 and the resulting image was subtracted from the original 3D image. This corrected any wrinkles or curls in the sample caused by the assembly procedure. Then the resulting image was softened slightly with a medium size 5 kernel filter to remove any high frequency noise from the measurement. These operations produced an image with the average plane of the surface at zero height (m3D). A threshold was generated for the image in order to eliminate any data that was less than 25 micrometers above the average plane (mt3D). Correlation of the data with the areas with lotion: (a) Coloring with osmium The GS image of the sample colored with osmium was smoothed with a kernel average convolution filter size 151 and the resulting image was subtracted from the original 3D image. This corrected the uneven lighting characteristics of the Primos system in the image. Then the resulting image was softened slightly with a medium size 5 kernel filter to remove any high frequency noise from the measurement. This image was scaled from (min, max) to (0.1) and a threshold operation was applied so that values below 0.30 were set to binary 1 and values above or equal to 0.30 were set to zero . This binary mask (MB) shows 1 s where there is lotion colored in dark and zeros in the rest. (b) Infrared spectroscopy If the coloring method is not appropriate for identifying lotioned areas, other methods may be used to identify them, preferably infrared spectroscopy. This may be appropriate when coloring does not allow areas with a lot of lotion (these are areas that can protrude from the surface) to be separated from the rest of the surface area, for example, if the lotion material is not colored or not. colors enough to differentiate it from the background or, for example, if the substrate itself stains. An appropriate method for identifying areas with lotion by infrared spectroscopy is described in U.S. patent application Ser. entitled "Paper fabric with high transferability of lotion" ("Paper tissue with high lotion transferability") of J. Kleinwaeschter, D. Butz, C. Marcott and G. Di Girolamo. This method describes how to measure the basis weight of the local lotion in an area of 25 pm x 25 pm of a sample with a surface area of 0.5 cm x 0.5 cm or greater. Preferably, a sample of at least 1 cm x 1 cm is used. The file containing the basis weight of the local lotion can be exported as an 8-bit gray-scale bitmaps file and transformed into the desired binary mask MB, using an image analysis program, for example, AnalySlS (available from Soft Imaging GmbH, Germany), as described in the U.S. patent application. mentioned above, setting all the pixels with a local lotion base weight of 10 g / m2 to "1" in the binary mask MB and all other points to "0". You can use the appropriate fiducial marks within the image to register the binary mask with the 3D image of the height. To remove data points that were not identified as lotion (dark area) in the binary mask (MB), the resulting 3D image in the preceding paragraph (mt3D) was multiplied pixel by pixel with the binary mask (MB). The areas of the resulting image not indicated as lotion in MB became zero. Regions with a surface smaller than 0.10 mmA2 (225 pixels) were removed from the final image. An edge of half the largest kernel size used (151/2 = 75) was removed from all sides of the image to remove invalid data resulting from the convolution operations to produce the final composite image (FC). The data points in the FC that were not zero were projected to the average plane (in the FC image the average plane is zero), and the area was calculated by adding the calibrated pixels. The volume above the average plane was also determined by the sum of the pixels of the projected area multiplied by the actual height above the average plane of each pixel. The separated regions of area and volume for each sample were recorded and the total, average and standard deviation of the areas and volumes were calculated. The field view measurement was used to calculate the fraction of coverage area of the lotion and the volume of lotion per sample area. The base weight of the lotion of the protruding deposits (in g / m2) is obtained from the average volume of deposits per area multiplied by the density of the lotion. The ratio R is then calculated by dividing the base weight of the deposit lotion (in g / m2) by the base weight of the fabric lotion (in g / m2). All documents cited herein are incorporated in their relevant part herein by reference; The citation of any document should not be construed as an admission that it eliminates the patentability of the present invention. While particular embodiments of the present invention have been illustrated and described, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention. It has been intended, therefore, to cover in the appended claims all changes and modifications that are within the scope of the invention.

Claims (10)

1. A paper web having the opposite first and second surfaces, comprising a lotion on at least one surface of the paper web, the lotion is present in different protruding deposits on the first surface, characterized in that the paper web has an equal volume or less than 5.2 cm3 / g of tissue, and because the protruding deposits have an average height of at least 30 μ? t ?.

2. A paper fabric according to claim 1, further characterized in that the deposits have an average height of at least 35 μ? T ?.

3. A tissue paper according to any of the preceding claims, further characterized in that the deposits have an average height of at least 38 μ? T ?.

4. A tissue paper according to any of the preceding claims, further characterized in that the ratio R is defined as Base lotion weight of protruding deposits (g / square meter) R = Base weight of tissue lotion (g / square meter) and the ratio R is greater than 0.005, preferably wherein the ratio R is greater than 0.01.

5. A tissue paper according to any of the preceding claims, further characterized in that the tissue paper comprises at least 2 protruding deposits, per square centimeter of tissue paper.

6. A tissue paper according to any of the preceding claims, further characterized in that the lotion is detected through staining with osmium tetroxide.

7. A tissue paper according to any of the preceding claims, further characterized in that the lotion is detected through scanning by IR spectroscopy.

8. A tissue paper according to any of the preceding claims, further characterized in that the lotion comprises at least 30% SEFOSE1618S® and preferably at least 10% stearyl alcohol.

9. A tissue paper according to any of the preceding claims, further characterized in that the base weight of the lotion on the tissue paper is equal to or less than 9 g / square meter.

10. A tissue paper according to any of the preceding claims, further characterized in that the ratio R2 is defined as: Area of outstanding deposits measured at the threshold value of claim 1 (mmA2) 2 = Area of tissue paper (mmA2) * Weight of tissue paper lotion (g / square meter) and R2 is at least 0.0005.