MX2007004789A

MX2007004789A - Fibrous structures comprising a design and processes for making same

Info

Publication number: MX2007004789A
Application number: MXMX/A/2007/004789A
Authority: MX
Inventors: Allen Manifold John; Jay Barkey Douglas; Knobloch Thorsten
Original assignee: The Procter And Gamble Company
Priority date: 2004-10-22
Filing date: 2007-04-20
Publication date: 2008-10-03

Abstract

Fibrous structures and/or sanitary tissue products comprising such fibrous structures, wherein the fibrous structures comprise a design, particularly a surface design, and processes for making such fibrous structures and/or sanitary tissue products are provided.

Description

FIBROUS STRUCTURES THAT COMPRISE A DESIGN AND PROCESSES TO MANUFACTURE THEM FIELD OF THE INVENTION The present invention relates to fibrous structures or tissue paper hygienic products comprising such fibrous structures, wherein the fibrous structures comprise a design, particularly a surface design, processes for making such fibrous structures or tissue paper hygiene products.

BACKGROUND OF THE INVENTION Fibrous structures comprising a design specifically a surface design are known. Traditionally, there are multiple techniques to impart a design to the fibrous structures. One technique is to engrave the fibrous structure to impart its design. Generally, the engraving is carried out with an apparatus by well known processes, such as engraving by embedding, engraving of protrusion against protrusion engraved from steel to rubber or engraving from steel to steel. The engraving is a process subsequent to the elaboration of fibrous structure and is carried out when the fibrous structure is dry. In general, the fibrous structures that are engraved to impart a design have different engravings protruding from the fibrous structure. These engravings can be grouped together to form a design or pattern. A problem that arises when imparting designs to the fibrous structures by etching is that the engraved designs are not stable in water unless they are subjected to some additional process, such as a chemical treatment. In other words, when a recorded design is saturated with water, the engraving relaxes and disappears practically disappears from the fibrous structure. This occurs as a consequence of the fact that the engraving processes alter the joints between the fibers of the fibrous structure. This alteration occurs because the joints are formed and established with the drying of the embryonic fibrous pulp used to make the fibrous structure. When engraved water is applied, the fibrous structure in the engraving, which does not contain joints between the fibers, relaxes. Another technique for imparting a design to the fibrous structures consists of imparting the design to the fibrous structure during the manufacturing process thereof. In one example, a design is created in a resin that is deposited on a cloth or a ribbon. The resin / fabric combination is often referred to as a deflection member because the resin is generally a continuous network having openings (voids) to which fibers of the fibrous structure can deviate. The designs created by this process are traditionally called micropatterns because they impart a pattern that covers the entirety of the fibrous structure. However, through this process, some larger designs, called "macropatterns", can be created, which do not encompass the entirety of the fibrous structure. To date, these macropatterns, such as roses, have included linear elements grouped together with other linear elements to form the macropatron. Unlike the designs made by engraving, the designs imparted to the fibrous structures during their manufacture resist the relaxation during the contact with the water because the joints between the fibers that are formed during the manufacturing process of the fibrous structure within said designs are It keeps intact. Imparting patterns, especially macropatterns that comprise linear elements, in the fibrous structures during the manufacturing process of these can produce an inappropriate deflection of the fibers in the areas of linear elements, which in turn can cause the presence of more small holes in the fibers. fibrous structures elaborated by such process. Moreover, since the conventional linear elements used in such processes generally have sharper corners or edges and are larger than other nonlinear elements, the drying of the fibers within the linear elements may be less efficient. In light of the drawbacks to impart designs or patterns to the fibrous structures described above, the need to achieve a fibros structure comprising a design, especially a macropattern design, which exhibits an engraving appearance persists, where the design exhibits similar properties or better than the properties of a design imparted to the fibrous structure during its manufacture. . Accordingly, there remains a need for a fibrous tissue paper hygienic structure comprising a design and processes for making such fibrous structures or tissue paper hygiene products.

BRIEF DESCRIPTION OF THE INVENTION The present invention satisfies the needs described above by providing a fibrous structure or tissue paper hygienic product which comprises a design and a process for manufacturing such fibrous structures or tissue paper hygienic product. In an example of the present invention, a fiber structure comprising a surface and a design is provided, wherein the design comprises a plurality of distinct, non-linear design elements, in which the different non-linear design elements are spatially linked each other such that said plurality of non-linearly distinct design elements visually represent a linear design element within the design, and wherein the design comprises a surface smaller than the entire surface area (eg, less than 50%, less than 40%, less than 30%, less than 25%, less than 15% or less than 10%) of the fibrous structure. In other words, the design does not touch all the peripheral edges of the surface of the fibrous structure. In another example of the present invention, the fibrous structure comprises: a. A network region; b. a first region of domes comprising at least one dome; c. a second region of domes comprising three or more domes, wherein the existence of a different value for the intensive properties is provided between the network region and the first region of domes or between the network region and the second region of domes or between the first region of domes and the second region of domes. In still another example of the present invention, a fibrous structure comprising a design is provided, wherein the design comprises at least three distinct, non-linear design elements, spatially arranged to visually represent a linear design element, wherein At least one of at least three distinct, non-linear design elements, consist of two visually recognizable regions. In yet another example of the present invention, a fibrous structure comprising a surface and a design is provided, wherein the design comprises at least one or at least two or at least three distinct design elements, n linear, in where at least one of the distinct, nonlinear design elements remains after the design element comes in contact with water (for example, it is saturated with water), where the design encompasses a surface area less than the total surface area of the fibrous structure. In still another example of the present invention, there is provided a method for manufacturing a fibrous structure comprising the step of forming a fiber structure including a design, wherein the design comprises at least three distinct, non-linear, spatially arranged design elements. to visually represent linear design element. Accordingly, the present invention provides a fibrous tissue paper hygienic structure comprising such a fibrous structure, wherein fibrous structure includes a design and a process for manufacturing it.

BRIEF DESCRIPTION OF THE FIGURES Figure 1 is a plan view of an example of a fibro structure in accordance with the present invention; Figure 2 is a cross-sectional view of the fibrous structure of Figure 1 taken along line 2-2. Figure 3 is a plan view of another example of a fibro structure according to the present invention; Figure 4 is a cross-sectional view of the fibrous structure shown in Figure 3, taken along line 4-4; Figure 5 is a plan view of another example of a fibro structure according to the present invention; Figure 6 is a cross-sectional view of the fibrous structure of Figure 5, taken along line 6-6; Figure 7 is a plan view of another example of a fibros structure according to the present invention; Figure 8 is a cross-sectional view of the fibrous structure of Figure 7, taken along line 8-8; Figure 9 is a schematic representation of an example of a machine used for the manufacture of a fibrous structure useful in the practice of the present invention; Figure 10 is a plan view of a portion of a deflection member useful in the practice of the present invention; and Figure 1 1 is a cross-sectional view of the deflection member d of Figure 10 taken along the line 11 -1 1.

DETAILED DESCRIPTION OF THE INVENTION Definitions As used herein, "fibrous structure" and "weft" refer to a substrate formed of non-woven fabric fibers. The fibrous structure of the present invention can be manufactured by any suitable process, such as wet-laid, air-laid, and consolidated filament processes. The fiber structure may be in the form of one or more sheets and be suitable for incorporation into a tissue paper hygienic product or may be in the form of nonwoven garments such as surgical garments, including surgical shoe covers, or paper products. tissue such as towels and surgical wipes. In general, an aqueous dispersion of fibers and dispersions in liquids other than water can be used to prepare an embryonic fibrous web. This liquid dispersion of fibers is often called fiber pulp. The fibers can be dispersed in the carrier liquid to have a consistency of about 0.1% to about 0.3%. It is believed that the present invention may also be applicable to wet forming operations, wherein the fibers are dispersed in a carrier liquid to have a consistency of less than about 50%, more preferably less than about 10%. Alternatively, an embryonic fibrous web may be prepared using an air-laying method, wherein a fiber composition (generally, not dispersed in a liquid) is deposited on a surface, eg, a forming member, of so that an embryonic plot is formed. The fibrous structures of the present invention may have physical properties, such as dry tensile strength, wet tensile strength, caliber, basis weight, density, opacity, tear resistance in wet state, decomposition rate, softness, volume, Tiles and sides with different finishes suitable for the consumers of the fibrous structures used in tissue paper hygiene products or known to persons of skill in the industry suitable for the fibrous structures used in said products. "Fiber", as used herein, means an elongated particle having an apparent length that considerably exceeds its apparent width, i.e., a length-to-diameter ratio of at least about 10. More specifically as used herein , "fiber" refers to paper 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 fiber, and any combination thereof. Papermaking fibers useful in the present invention include cellulosic fibers known as wood pulp fibers. Some useful wood pulps in the present are chemical pulps, such as Kraft, sulphite and sulphate pulps, as well as mechanical pulps that include, for example, crushed wood, thermomechanical pulps, chemically modified thermomechanical pulps. Pulps derived from deciduous trees (hereinafter also called "hardwood") and from coniferous trees (hereinafter also called "softwood") can be used. Hardwood and softwood fibers can be blended, or alternatively, layered to provide a stratified web. U.S. Pat. num. 4,300,981 and 3,994,771 are incorporated herein by reference for the purpose of disclosing the stratification of hardwood and softwood fibers. Also useful are fibers derived from recycled paper which may contain one or all of the categories of fibers mentioned other non-fibrous materials, such as fillers and adhesives that facilitate the papermaking process. In addition to the above, the fibers and filaments made of polymers can be used in the present invention., in particular hydroxyl polymers Non-limiting examples of suitable hydroxyl polymers include polyvinyl alcohol starch, starch derivatives, chitosan, chitosan derivatives, gum cell derivatives, arabinans, galactans, and mixtures thereof. As used herein, "fibrous pulp" refers to a fiber composition. In one example, the fibrous pulp may comprise fibers and a liquid such as water. As used herein, "tissue paper hygiene product" refers to a single or multi-sheet cleaning implement for post-urination hygiene defecation (toilet paper), for secretions of otorhinolaryngological origin (disposable handkerchief) and for absorbent uses and multifunctional cleaners (absorbent towel). The tissue paper hygiene products of the present invention may have physical properties, such as dry tensile strength, wet tensile strength, caliper, basis weight, density, opacity, tear resistance and wet state, decomposition rate, softness, volume, lint and sides with different finishing suitable for consumers who use the tissue paper hygienic products or known by people of skill in the industry com suitable for tissue paper hygiene products. "Leaf" or "leaves", as used herein, means an individual fibrous structure to be placed in a face-to-face relationship substantially contiguous with other leaves, forming a fibrous multi-leaf structure. It is also contemplated that a single fibrous structure can efficiently form two multiple "sheets", "sheets", for example, by folding it over itself. The fibrous structure and tissue paper hygienic product of the invention can be a single-ply or a single-ply or multi-ply structure. A multi-ply fibrous structure can comprise multiple sheets of a fibrous structure of the present invention or of a combination of sheets, of which at least one is a sheet of fibrous structure of the present invention. "Base weight" as used herein is the weight per unit of ar of a sample reported in g / m2. The basis weight is measured by preparing one or more samples of a given area (m2) and weighing the samples of a fibrous structure according to the present invention or a paper product comprising this fibrous structure on a top loading scale with a minimum resolution of 0.01. g. Balance is protected from drafts and other disturbances using a shield against air currents. The weights are recorded when the readings on the balance are constant. The average weight (g) and the average area of the samples (m2) are calculated. The basis weight (g / m2) is calculated by dividing the average weight (g) by the average ar of the samples (m2). If needed, the basis weight in units of g / m2 can convert to pounds / 3000 ft2. "Caliber", as used herein, means the macroscopic thickness of a sample. The size of a sample of fibrous structure according to the present invention is determined by cutting a sample of the fibrous structure of greater size than that of a loading foot surface whose circular surface area is approximately 20.3 cm 2. The sample is confined between a flat horizontal surface and the loading surface of a loading foot. The loading surface of a loading foot applies a confining pressure to the sample of 15.5 g / cm2. The gauge is the resulting space between the flat surface and the loading surface of a loading foot. Said measurements can be obtained with an electronic thickness tester VIR Model I available from Thwing-Albert Instrument Company, Philadelphia, PA. Calibration measurement is repeated and recorded at least five (5) times to calculate the average caliber. Result is reported in millimeters. The gauge of the weft is generally measured under a pressure of 15 g / cm using a circular pressure foot that has a diameter of 5 cm, after u resting time of 3 seconds. The gauge can be measured using a Thwing Albert apparatus to determine thicknesses, model 89-100, manufactured by the Thwing-Albert Instrumen Company of Philadelphia, Pennsylvania. The gauge is measured in accordance with the TAPPI conditions of temperature and pressure. "Density", as used herein, means the basis weight of a sample divided by the caliber with the appropriate conversions incorporated therein. The bulk density that is used n the present has units of g / cm3. "Weight average molecular weight", as used herein, means the weight average molecular weight as determined using gel permeation chromatography according to the protocol found in "Colloids Surfaces A. (Colloids and surfaces A.) Physico Chemical & Engineering Aspects, Vo 162, 2000, p. 107-121. Unless otherwise specified, all molecular weight values herein refer to the weight average molecular weight. "Machine direction" or "D", as used herein, means the direction parallel to the flow of the fibrous structure through the machine to manufacture the fibrous structure or the equipment to manufacture the product. As used herein, "cross machine direction" or "CD" refers to the direction perpendicular to the machine direction in the same plane of the fibrous structure or tissue paper hygienic product comprising the fibrous structure. As used herein, "circumscribe" means that the first region is practically disposed within a second region. Thus, it is not necessary that the first region be enclosed or totally contained in the second region to consider that the first region is circumscribed in the second or to consider that the first region is practically within the second. As used herein, "non-linear" means that an object, t as a design element, exhibits a different form or visual configuration of a line. For example, an object such as a design element exhibits an approximate ratio of maximum geometric dimension to minimum geometric dimension (often referred to as aspect ratio) less than about 50: 1, less than about 30: 1, or less than about 15: 1, or less than about 10: 1, or less than about 5: 1, or less than about 2: 1, or less than about 1: 1. As used herein, "intensive property", "intensive properties", "common intensive property values" or "common intensive property values", mean density, basis weight, gauge, substrate thickness, increased opacity, frequency of creped, tensile strength and any combination d these. The fibrous structures of the present invention can comprise two or more regions with different values of intensive properties common to each other. In other words, a fibrous structure of the present invention can comprise a region with a first opacity value and a second region with a second opacity value different from the first opacity value. Said regions can be continuous virtually continuous and / or discontinuous.

The fibrous structure In one example, a fibrous structure 10 in accordance with the present invention, as shown in Figure 1, comprises a surface 12 and a design 1 in which the design 14 comprises a plurality of distinct design elements n n linear 16 , wherein the different non-linear design elements 16 are spatially associated with each other, such that the plurality of distinct non-linear design elements 16 visually represent a linear design element 18 within the design 14, and wherein the design 14 It comprises a surface smaller than the entire surface area of the surface 12 of the fibrous structure 10. A cross section of the fibrous structure 10 taken along the line 2-2 is shown in Figure 2. Figure 2 shows the fibrous structure 10 a plurality of distinct, non-linear design elements 16. The fibrous structure 1 comprises at least one fiber 20. A plurality of fibers 20 are shown in the example of the fibrous structure 10. As shown in Figures 1 and 2, the distinct, non-linear design elements 16 could be domes. As shown in Figure 2, distinct nonlinear design elements 16 ar to extend (protruding) from a plane 22 of the fibrous structure 10 to an imaginary observer looking in the direction of the arrow T. In view of an imaginary observed looking in the direction indicated by arrow B, the non-linear distinct design elements 16 look like cavities or small holes. The portions of the fibrous structure 10 that form the various non-linear design elements 16 may be intact; however, the portions of the fibrous structure 10 that form the different non-linear design elements 16 may comprise one or more holes or openings extending essentially through the fibrous structure 10. As shown in Figure 3, another example of the fibrous structure 10 'in accordance with the present invention comprises a surface 12', a first design 1 and a second design 24, wherein the first design 14 'comprises a plurality of different non-linear design elements 16', where the non-linearly distinct design elements 16 'are spatially associated with each other, such that the plurality of distinct non-linear design elements 16' visually represent a linear design element 18 'within the first pattern 14', wherein said first design 14 'covers less than the entire surface area of the surface 12' of the fibrous structure 10 'Moreover, the second pattern 24 covers the entire area surface of the surface 12 'and still a portion of it is contained in the first design 14'. In one example, the second pattern 24 ars to be visually present in the entire surface area of the surface 12 'of the fibrous structure 10' with the exception of those areas where the first pattern 14 'is present. The second design 24 may comprise distinct design elements 26 that when spatially associated with one another visually form a design. In this example, the second design 24 may be referred to as "micropattern", and the first design 14 'may be referred to as "macropattern." A representative cross section of the fibrous structure 10 'taken along line 4-4 is depicted in Figure 4. Figure 4 shows the fibrous structure 10' and a plurality of distinct, non-linear design elements 16 ', and a plurality of distinct design elements 26. The fibrous structure 10 'comprises at least one fiber 20'. A plurality of fibers 20 'is shown in the example of the fibrous structure 10'. As shown in Figures 3 and 4, the different design elements, n linear 16 'or the different design elements 26 could be domes. As illustrated in Figure 4, the distinct nonlinear design elements 16 'or the distinct design elements 26 ar to extend (protruding) from a plane 22' of the fibrous structure 10 'to an imaginary observer looking into it. direction of the arrow T. In view of an imaginary observer looking in the direction indicated by the arrow B ', the distinct, non-linear design elements 16 'and / or the different design elements 26 resemble cavities or small pits. The portions d of the fibrous structure 10 'forming the different non-linear design elements 16' distinct design elements 26 may be intact; however, the portions of the fibrous structure 10 'that form the various non-linear design elements 16' or the distinct design elements 26 may comprise one or more holes or openings that extend essentially through the fibrous structure 10 '. As shown in Figure 5, another example of the fibrous structure 10 in accordance with the present invention comprises a surface 12", a first pattern 14" and a second pattern 24 ', wherein the first pattern 14"comprises a plurality of d non-linear different design elements 16", wherein the non-linear distinct design elements 16" are spatially associated with each other such that the plurality of distinct non-linear design elements 16"visually represent a linear design element 18" within of the first design 14", wherein said first pattern 14" covers less than the entire surface area of the surface 12"of the fibrous structure 10" Moreover, the second pattern 24 'covers the entire surface area of the surface 12". ", and still a portion of it is contained in the first design 14." In one example, second design 24 'appears to be visually present in the entire surface area of the surface 12"of the fibrous structure 10"with the exception of those areas in which the first design 14 is present". The second design 24 'may comprise distinct design elements 26' that when spatially associated between visually form a design. In this example, the second design 24 'may be referred to as "micropattern", and the first design 14"may be referred to as" macropattern. "A cross section representative of the fibrous structure 10" taken along the line 5-5 is Figure 6 shows the fibrous structure 10"and a plurality of distinct, non-linear design elements 16" and a plurality of distinct design elements 26 '. The fibrous structure 10"comprises less one fiber 20". A plurality of fibers 20"are shown in the example of fibrous structure 10". As shown in Figures 5 and 6, the distinct, non-linear design elements 16"or the different design elements 26 'could be domes, as illustrated in Figure 6, the distinct non-linear design elements 16" or the various design elements 26 'appear to extend (protruding) from a plane 22"of the fibrous structure 10" to an imaginary observer looking in the direction of the arrow T. "In view of an imaginary observer looking in the direction indicated by the arrow B ", the different non-linear design elements 16" and / or different design elements 26 'seem cavities or small holes.The portions d the fibrous structure 10"that form the different non-linear design elements 16"distinct design elements 26" may be intact, however, portions of the fibrous structure 10"forming the distinct non-linear design elements 16" or different design elements 26 'may comprise one or more holes or openings that extend practically through the fibrous structure 10".

In the fibrous structures of the present invention, at least one of the different non-linear design elements or the different design elements can retain at least one of their properties in the dry state, such as the shape structure height, opacity and similar, after getting wet, such as when they are saturated with water For example, different design elements can retain at least 10%, or 20%, 30%, or 40%, or 50% or 60% of their dry structural height measure in accordance with the structural height test method in the dry or wet state described in the present In one example, the different design elements retain at least approximately 100% (even adding structural height greater than the height in the dry state of the elements of non-linear design) of its structural height in the dry state measured in accordance with the structural height test method in the dry or humid state described herein. In addition to the plurality of different design elements, they do not line spatially associated with each other in such a way that the plurality of distinct, non-linear design elements visually represent (form) a line design element within a design, the design elements Different non-linears may be spatially associated with each other such that the plurality of distinct non-linear design elements visually represent (form) a different object or shape, such as a diamond, circle, square, rectangle, ellipse or contours of such shapes . Figure 7 illustrates an example of another fibrous structure 10"of the present invention, wherein the fibrous structure 10" 'comprises a surface 12"' and a pattern 14" ', wherein the design 14"' comprises a plurality of non-linear distinct design elements 16"', wherein the non-linear different design elements 16"' are spatially associated with each other such that the plurality of distinct non-linear design elements 16"'visually represent an object or shape different, in this case a diamond. The design 14"'covers a surface less than the entire surface area of the surface 12"' of the fibrous structure 10"'A cross section representative of the fibrous structure 10"' taken along the line 8-8 is shown in Figure 8. Figure 8 shows the fibrous structure 10"'and a plurality of distinct, non-linear design elements 16"' The fibrous structure 10"'comprises at least one fiber 20"'. A plurality of fiber 20"'is shown in the example of the fibrous structure 10"'. As shown in Figures 7 and 8, the distinct, non-linear design elements 16"'could be domes, as illustrated in Figure 8, the different non-linear design elements 16"' seem to extend (outgoing) from a plane 22"'of the fiber structure 10"' towards an imaginary observer looking in the direction of the arrow T "\ A view of an imaginary observer looking in the direction indicated by the arrow B" \ lo elements of Different non-linear designs 16"'resemble cavities or small pits The portions of the fibrous structure 10"' that form the distinct design elements n "16" 'may be intact, however, the portions of the structure fibros 10"' which form the various non-linear design elements 16"'may comprise one or more holes or openings extending essentially through the fibrous structure 10"'. The different non-linear design elements and the different design elements present in the fibrous structures of the present invention may have different properties, such as different sizes, structural heights, frequencies, densities (ie, how many elements are arranged in a surface area). determined), aspect ratios, shapes, and the like, so that the elements are visually recognizable. In an example of a fibrous structure in accordance with the present invention, the different non-linear design elements may have a structural lute in a dry or wet state of at least about 100 μm, or at least about 150 μm, or at least about 200 μm, or at least about 250 μ ?t ?, or at least about 300 pm, or at least about 400 pm, or at least about 500 pm, or at least about 600 pm. In another example of a fibrous structure according to the present invention, the various non-linear design elements may have a structural height in the dry or wet lower state of less than about 5000 μm, less than about 4000 μm, or less than about 3500 μm. . In one example, at least one non-linear design element distinct from the fibrous structure has a relationship between the structural height in the wet state and the structural height in the dry state of at least 0.3 or at least about 0.4, at least about 0.5 , or at least about 0.6, or at least about 0.7. Although Figures 7 and 8 do not illustrate elements of different design such as Figures 3-6, such different design elements could be included in the fibrous structure illustrated in Figures 7 and 8. As shown in Figures 3-6, A fibrous structure according to the present invention could comprise at least two dome regions. A first region of domes comprises distinct design elements 26, 26 ', and a second region of domes comprises distinct non-linear design elements, 16', 16"As shown in Figures 3 and 5, the surface 12 ', 12"could comprise a surface network 28, 28 '. The surface network 28, 28 'could form a substantially continuous macroscopically monoplanar re region. The surface network 28, 28 'can be continuous. It can be macroscopically monoplane and can form a pre-selected pattern. When two or more regions of domes are present, for example 26 and 16 ', in the fibrous structure together with a network region, the network region can completely surround at least one dome 26 of the first region of domes or a dome 16 'of the second region of domes. The network region can isolate a dome from another dome. The Sun may be scattered throughout the entire network region. The network region may have a relatively low basis weight or a relatively high density, while the sun may have relatively high base weights and relatively low densities. Moreover, the domes may have a relatively low intrinsic force, while the region d network may have a relatively high intrinsic force. The density of the network region may vary from approximately 0.400 g / cm3 to approximately 0.800 g / cm3, or approximately 0.500 g / cm3 approximately 0.700 g / cm3. The average density of the domes may vary, preferably, from about 0.040 g / cm3 to about 0.150 g / cm3 or d about 0.060 g / cm3 to about 0.100 g / cm3. If the amount of fibers underlying a unit area projected in the portion of the fibrous structure under consideration is taken into account, the ratio between the basis weight of the network region and the average base weight of the domes is approximately 0.8 to approximately 1.0. The surface network can be called a "network region" because it comprises a system of lines with essentially uniform physical characteristics that intersect, intertwine or cross as the fabric of a network. The region of the network can be described as "continuous" because the lines of the network region can be essentially uninterrupted through the surface of the fibrous structure. (Naturally, because of its nature, the fibrous structures of the present invention may not be completely uniform, for example, on a microscopic scale.The lines of essentially uniform characteristics are uniform in a practical sense and, therefore, uninterrupted in one direction. practical). The network region can be described as "macroscopically monoplane" becauseWhen the entire fibrous structure is placed in a planar configuration, the surface of the upper part (i.e. the surface lying on the same side of the fibrous structure as the domes of the domes) of the network region is essentially flat (The comments above on the microscopic deviations of uniformity within a fibrous structure apply to this as well). It can be said that the network region forms a preselected pattern because the lines define or delineate a specific shape or forms in a repeated pattern as opposed to a random pattern. However, a random pattern of the lines of the network region can also be obtained. In an example of the present invention, at least one dome of the first region of domes is contained by the network region. In another example of the present invention, the first domed region comprises a plurality of domes. In another example of the present invention, three or more domes of the second region of domes form a design element of a design. In another example of the present invention, two or more of the network region and one or more regions of domes have different values of one intensive property than another of the regions. In another example of the present invention, one or more regions of domes are adjacent to the network region. In another example of the present invention, at least one dome of the first region of domes and at least one dome of at least three domes of the second region of domes are separated from each other by the network region. In another example of the present invention, the network region has a base weight lower than the basis weight of one or more regions of domes. In another example of the present invention, the network region has a higher density than the density of one or more regions of domes. In another example of the present invention, the region of re presents a lower elevation than the elevation of at least one dome of one or more regions of domes. In another example of the present invention, at least one dome of the first domed region has a lower elevation than the elevation of at least one of at least three domes of the second domed region. In another example of the present invention, the first domed region consists of a plurality of domes, and a second domed region also consists of a plurality of domes, wherein each of the domes of the plurality of domes of the second region of domes presents a higher elevation than the elevation of each of the domes of the plurality of domes of the first region of domes. In another example of the present invention, at least one dome of at least three domes of the second domed region has a minimum dimension greater than the largest dimension of at least one dome of the first domed region. In another example of the present invention, the first domed region consists of a plurality of domes, and a second domed region also consists of a plurality of domes, e where each of the domes of the plurality of domes of the second region of dome has a minimum dimension greater than the largest dimension of each of the domes d the plurality of domes of the first region of domes. As shown in Figures 1, 3, 5 and 7, a fibrous structure 10, 10", 10" ', according to the present invention, could comprise a design 14, 14', 14 14"', wherein the design 14, 14 ', 14", 14"' comprises at least three distinct, non-linear design elements 16, 16 ', 16", 16"' spatially distributed to visually represent a linear design element 18, 18 ', 18"or visually representing a different object, wherein at least one of the three distinct, non-linear design elements 1 16 ', 16", 16"' comprises at least two or at least three, or at least 4 visually discernible regions . In one example of fibrous structure of the present invention, at least one of the at least three distinct, non-linear design elements consists of two visually recognizable regions. The fibrous structure may comprise a background matrix represented by the second design 24, 24 'in Figures 3 and 5. At least one of the at least tr different, non-linear design elements 16', 16"could be superimposed on the background matrix The background matrix can be adjacent to at least one of at least three different non-linear design elements 16 ', 16". The background matrix can visually represent or form one of the two visually recognizable regions of the fibrous structure. In an example of fibrous structure of the present invention, one of the two visually recognizable regions may circumscribe the other. In another example of the fibrous structure of the present invention, one of the two visually recognizable regions may have a first value of an optical intensity property, and the other of the two visually recognizable regions may have a second value of 1 optical intensity property. , characterized because the first and the second value are different. The difference between the first value of an optical intensity property and the second value of the optical intensity property may be at least about 5%, at least about 10%, at least about 15%, or at least about 30%, or at least about 50%. In an example of the present invention, the elevation of the two visually recognizable regions differs by at least about 100 μ ??, or at least about 125 μp, or at least about 150 μ ??, or at least about 200 μ al to the menu ?? While it is understood that the possibility that the pattern is visually recognizable and that the regions are visually distinguishable depends on the visual acuity of the consumer, the regions of the visually recognizable fibrous structure can be distinguished from each other by the value of any of the properties of optical intensity. Com is used herein, "properties of optical intensity" are three specific properties whose value does not change with the addition of fibers to the fibrous structure within the plane of the fibrous structure or with the addition of a foreign substance, such as ink, to the fibrous structure. The three specific properties are creping frequency, elevation and opacity. Therefore, it is not considered that the patterns formed by the contrast of colors form by properties of optical intensity. Moreover, the visually recognizable regions of the at least one of the three different non-linear design elements can be arranged according to patterns, as determined below, that are large enough to be recognizable by a consumer and that are distinguish from the fond matrix of the fibrous structure. The relatively large size of the pattern improves the consumer's understanding that the purpose of the pattern is to impart an aesthetically pleasing appearance to the fibrous structure, and thus to achieve that the fibrous structure or the tissue paper hygienic product comprising such fibrous structure result more desirable to the consumer. A value of an optical intensity property that can be used to distinguish a visually recognizable region from another is the value of the crepe frequency of each of these regions. The creping frequency is defined as the amount of time a peak occurs on the surface of the fibrous structure at a certain distance line. More particularly, the "creping frequency" is defined as the number d cycles per millimeter of a visually recognizable region. These cycles are associated with the aforementioned blade marking during the creping operation. The creping frequency is closely linked to the amplitude of the undulations that form the cycles. The creping frequency is not generally the same as the frequency of the visually recognizable regions that form the design (pattern) of the topography of the surface of the fibrous structure. It should be recognized that the value of the creping frequency may not be constant over a certain visually recognizable region. Thus, and it is important to measure a sufficiently large distance or a combination of distances along a particular visually recognizable region, so that the value of a certain creping frequency can be found. Furthermore, if any background matrix present in the fibrous structure is examined, at least two creping frequency values may be present. This may occur, for example, if the base matrix is made on a conventional forming wire and dried on a ribbon having a certain background matrix or alternatively, it is made on a forming wire having a determined background matrix. . If the background matrix is composed of more than one creped frequency value d, as opposed to normal and expected variations within the same creping frequency, it is considered that the creping frequency of the fond matrix will be the lowest frequency of the plurality of individual creping frequencies present. Indeed, the bottom matrix, as described above, can comprise most of the surface area of the fibrous structure. In order for two visually recognizable regions to be visually distinguished based on creping frequency differences and for the design (pattern) to be visually recognizable, the value of the creping frequencies between visually recognizable regions may vary by at least about 2. cycles per millimeter or 5 cycles per millimeter. In an example of a fibrous structure according to the present invention, the creping frequency of a background matrix, if any, may be about 0.87 cycles per millimeter. The creping frequency of one of the visually recognizable regions may be from about 7 to 8 cycles per millimeter. The creping frequency of the other visually recognizable region can be about 2 cycles per millimeter. A value of a second property of optical intensity that can be used to distinguish a visually recognizable region from another is the value of the opacid of that region visually recognizable. "Opacity" is the property of a fibrous structure that prevents or reduces the transmission of light through it. The opacity is directly related to the base weight and the uniformity of the fiber distribution of the fibrous structure and is also affected by the density of the fibrous structure. fibrous structure that has a relatively higher basis weight and uniformity in the distribution of fibr will also have a greater opacity for a given density. As used herein, the "basis weight" of a region visually recognized is the weight, measured in grams of force, of a unit area of such a region visually recognizable from the fibrous structure.; said unit of area is taken in the pla of the fibrous structure. The size and shape of the area unit from which weight is taken depends on the measurements and relative and absolute shapes of the visually recognizable regions that form the background matrix, if any, and the design (pattern) of the fibrous structure. in consideration. The "density" of a visually recognizable region is the basis weight of such a visually recognizable region divided by its thickness. Those with knowledge in the industry will perceive that, within a certain visually recognizable region, there can be ordinary and expected fluctuations and variation in the basis weight when it is considered that a certain visually recognizable region has a basis weight of a particular value. For example, if you measure the basis weight of a gap between fibers at a microscopic level, an apparent basis weight of zero will be obtained when, in reality, the basis weight of such a visually recognizable region is greater than zero unless an aperture is measured. the fibrous structure. Such fluctuations and variations are normal and expected as part of the manufacturing process of the fibrous structure. It is not necessary that the demarcation between recognizable adjacent visual regions of different base weights be perfect or very acute. It is only important that the distribution of the fibers per unit area be different between visually adjacent regions and that such visually recognizable regions occur in a visually recognizable pattern. The different base weights of the visually recognizable regions provide different opacity in such visually recognizable regions. Increasing the density of a visually recognizable region having a particular basis weight will increase the opacity of such a visually recognizable region to a certain point. Beyond this point, a greater densification of a visually recognizable region having a certain basis weight will reduce the opaque. Thus, two visually recognizable regions with the same base weights may have different opacity, which will depend on the relative densification of such recognizable regions. visually. Alternatively, two visually recognizable regions of the same opacity may have different base weights and not be otherwise visually distinguishable to the consumer. In order for two visually recognizable regions to be visually distinguishable from each other based on the difference in opacity (and for the design to be visually recognizable), the opacity value between visually adjacent recognizable regions may vary by at least about 20 gray levels.

The value of the third property of optical intensity that can be used to distinguish a visually recognizable region from another is the elevation (structural height of such visually recognizable regions.) As used herein, "elevation is the distance, normally taken following the plane of the fibrous structure, of a visually recognizable region measured from the planar surface of the fiber structure seen from the face not in contact with the drying belt A visually recognizable region may vary in elevation of the flat surface of the fiber. the fibrous structure in any of the normal directions with respect to the plane of the fibrous structure, the elevation differences create shadows and highlights in visually adjacent regions, which makes the design (pattern) visually recognizable. Visually recognizable regions are visually distinguished based on elevation differences and p For the design (pattern) to be visually recognizable, the value of the elevations between visually adjacent recognizable regions may vary by at least about 0.05 millimeters and between at least about 0.08 millimeters and 0.38 millimeters or 0.23 millimeters. Thus, two visually adjacent recognizable regions can visually distinguish whether the values of one, two or three of the optical intensity properties d such visually recognizable regions are different. Of the three optical intensity properties mentioned above, the elevation value may be the most critical to make a pattern visually recognizable. Therefore, the elevation difference can be used alone or in conjunction with any of the other two optical intensity properties to produce the desired pattern. Certainly, the value of the elevation difference should increase if this property is not used in combination with the opacity and creping frequency to produce the desired pattern.

In an example of a fibrous structure according to the present invention, the elevation (structural height) of the two visually recognizable regions differs by at least about 100 μp ?, or at least about 150 μ ??, at least about 200 μ? ?, or at least about 250 μ? In another example of the fibrous structure according to the present invention, one of the two visually recognizable regions may have a first density value, and the other of the two visually recognizable regions may have a second density value, wherein the first and the second value are different. The difference between the first density value and a second density value are different from at least about 5%, or at least about 10%, or at least about 15%, or at least about 30%, or at least about 50% . In yet another example of fibrous structure according to the present invention, the visually recognizable regions may be generally concentric. As used herein, "concentric" means that the visually recognizable regions have a common center, regardless of the shape of the regions. visually recognizable regions. Even regions that are visually recognizable in an irregular manner are considered concentric if such visually recognizable regions have a common center. It is believed that the concentricity of visually recognizable regions attracts the consumer's gaze towards a recognizable design (pattern) and broadens its appearance for the observer. In yet another example of fibrous structure according to the present invention, the visually recognizable regions may be generally congruent. As used herein, "congruent" means that the visually recognizable regions have a common form, but may be of different sizes. Generally, visually congruent recognizable regions appear with a common visual theme, and it is believed that they are aesthetically more pleasant consumer than visually recognizable regions that bear little similarity in form with respect to adjacent ones. Two regions that are visually recognizable can be concentric with each other, but not congruent, congruent to each other, but not concentric, or concentric, or congruent. Any and all combinations of the distribution of the distinct, non-linear elements or distinct design elements represented in Figures 1 can be included in a single fibrous structure of the present invention. The fibrous structures of the present invention can be incorporated into a single-sheet or multi-sheet tissue paper. Fibrous structures may be foreshortened, either by micro-shrink or rapid transfer, or not foreshortened, either uncreped, creped from a cylindrical dryer with a crepe blade, removed from a cylindrical dryer without the use of a crepe blade or elaborated without a cylindrical dryer. The fibrous structures of the present invention are useful in paper products, especially tissue paper sanitary products including, but not limited to conventionally pressed tissue paper with felt; densified tissue paper with pattern; tissue paper of high volume, not compacted. This paper can be homogeneous or multilayered, the products made from it can be single-sheet or multi-sheet. In one example, the fibrous structure or tissue paper hygienic product of the present invention may have a basis weight ranging from about 10 g / m2 to about 120 g / m2; a density of approximately 0.150 g / cm3 lower, or 0.100 g / cm3 or less, or 0.80 g / cm3 or less, or 0.60 g / cm3 or less approximately 0.010 g / cm3, or approximately 0.015 g / cm3, or approximately 0.020 g / cm3. In another example, the fibrous structure or tissue paper hygienic product of the present invention may have a basis weight below about 35 g / m2 and a density of about 0.30 g / cm 3 or less. In another example, the fibrous structure or tissue paper hygienic product of the present invention may have a density ranging from about 0.04 g / m3 to about 0.20 g / cm3. The fibrous structures may be selected from the group comprising fibrous structures dried by air circulation, fibrous structures of differential density, wet laid fibrous structures, conventional fibrous structures, fibrous structures of consolidated filaments, fibrous structures of spinning yarns and mixtures thereof. Fibrous structures can be made with a fibrous filler that produces a single-layer embryonic fibrous continuous material or a fibrous filler that produces a multi-layered embryonic fibrous continuous material.

Additives of the fibrous structure In addition to the fibers, the fibrous structures of the present invention may comprise an optional additive selected from the group comprising temporary or permanent wet strength resin, dry strength resins, wetting agents, agents to resist formation of fluff, absorbency enhancing agents, immobilizing agents, particularly in combination with emollient lotion compositions, antiviral agents, including organic acids, antibacterial agents, polyol polyesters, anti-migration agents, polyhydroxy plasticizers and mixtures thereof. These optional additives can be added to the fiber dough, to the embryonic fibrous web or to the fibrous structure. The concentration of these optional additives in fibrous structures varies depending on the dry weight of the fibrous structure. The approximate concentration of the optional additives in the fibrous structures varies from about 0.001 to about 50%, or od about 0.001 to about 20%, or about 0.01 about 5%, or from about 0.03 to about 3%, or od about 0.1 to about 1.0% by weight, based on a dry fibrous structure.

Processes for Making Fibrous Structures The fibrous structures of the present invention can be made by any suitable process known in the industry. In an example of a process for manufacturing a fibrous structure of the present invention, the process comprises the step of contacting the embryonic fibr web with a deflection member such that at least a portion of the embryonic fibrous web is it deviates out of the plane of another portion of the embryonic fibros weft. As used herein, the phrase "out of plane" means that the fibrous structure comprises a projection, such as a dome, or a cavity extending outwardly from the plane of the fibrous structure. In another example of a process for making a fibrous structure of the present invention, the process comprises the steps of: (a) Providing a fibrous pulp comprising fibers; and (b) depositing the fibrous pulp on a deflection member such that at least one fiber is deflected away from the plane of the other fibers present in the deflection member. In yet another example of a process for making a fibrous structure the present invention, the process comprises the steps of: a) Providing a fibrous pulp comprising fibers; (b) depositing the fibrous pulp on a porous member to form an embryonic fibrous web; (c) associating the embryonic fibrous web with a deflection member such that at least one fiber is deflected away from the plane of the other fibers present in the embryonic fibrous web; and (d) drying said embryonic fibrous web in such a way that dry fibrous structure is formed. In another example of a process for making a fibrous structure of the present invention, the process comprises the steps of: (a) Providing a fibrous pulp comprising fibers; (b) depositing the fibrous pulp on a first porous member so that an embryonic fibrous web is formed; (c) associating the embryonic web with a second porous member having a surface (the surface in contact with the embryonic fibro web) comprising a macroscopic, monoplane network surface, which is continuous and has a pattern, and defines a prime region of Deflection conduits and a second region of deflection conduits within the first region of deflection conduits; (d) diverting the fibers of the embryonic fibrous web towards the deflection conduits and removing the water from the embryonic web through the deflection conduits in order to form an intermediate fibrous web under conditions such that the deflection of the fibers starts not beyond the moment when the removal of water begins through the deflection ducts; and (e) optionally, drying the intermediate fibrous web; and (f) optionally, foreshortening the intermediate fibrous web. The fibrous structures of the present invention can be made by a process in which a fibrous pulp is applied to a first porous member to produce an embryonic fibrous web. The embryonic fibrous web can then enter into contact with a second porous member comprising a deflection member to produce an embryonic fibrous web comprising a network surface and at least one region of domes. This intermediate web can then be dried to form a fibrous structure of the present invention. Figure 9 is a simplified schematic representation of an example of a process for manufacturing a continuous fibrous structure and a machine useful for the practice of the present invention. As illustrated in Figure 9, an example of a process and equipment identified as 30, for manufacturing a fibrous structure in accordance with the present invention comprises supplying an aqueous dispersion of fibers (fiber stock) to an inlet box 32, which It can be of any convenient design. The aqueous dispersion of fibers is distributed from the inlet box 32 to the first porous member 34 generally a Fourdrinier wire, to produce an embryonic fibrous web 36. The first porous member 34 can be supported by a suction roller 38 and a plurality of rollers. return 40, 40 ', of which only two are shown. The first porous member 34 can be driven in the direction indicated by the directional arrow 42 using a pulling means, which is not shown. Optional auxiliary device units commonly associated with machines for fabricating fibrous structures and with the first porous member 34, although not shown, include molding tables, hydrofoils, vacuum boxes, tension rollers, support rollers, wire cleaning showers , and the similar. After the aqueous dispersion of fibers is deposited on the first porous member 34, the embryonic fibrous web 36 is formed, generally by removing a portion of the aqueous dispersion medium using techniques that are well known to those of ordinary skill in the industry. . Vacuum boxes, molding tables, hydrofoils and the like are useful for removing water. The embryonic fibros frame 36 can be moved with the first porous member 34 around the return pad 40 and contacted with a deflection member 44, which can also be referred to as the second porous member. While in contact with the deflection member 44, the embryonic fibrous web is diverted, rearranged, and / or drained further. The deflection member 44 may be in the form of an endless belt. In this simplified representation, the deflection member 44 passes around the return rollers 46, 46 ', 46"of the deflection member and the engraving press roller 4 and can be moved in the direction indicated by the directional arrow 50. Member associates of deflection 44, although not shown, there may be several support rollers, other return rollers, cleaning means, traction means and the like, with which those familiar with the industry are familiar, and which is commonly used in the machines for manufacturing fibrous structure The deflection member 44 must have certain physical characteristics whatever the physical form it may have, whether it be an endless belt, as mentioned above, some other example such as a stationary plate used in making standard sheets or a rotary drum for use in other types of continuous processes, for example, the deflection member may be presented in a variety d configurations such as tapes, drums, flat plates, and the like. First, the deflection member 44 must be porous. That is, to have continuous passages that connect their first surface 52 (or "upper surface" "work surface", that is, the surface with which the embryonic fiber frame is associated, sometimes referred to as "surface in contact with the embryonic fiber frame") with its second surface 54 (or "lower surface", i.e. the surface with which the return rollers of the deflection member are associated). In other words, the deflection member 44 must be constructed such that, when the water is removed from the embryonic fibrous web 36, such as by the application of differential fluid pressure, as a vacuum box 56 does, and when water is removed from the embryonic fibrous web 36 in the direction of the deflection member 44, water can be discharged from the system without having to re-contact the embryonic fibrous web 36 in the liquid or vapor state. Second, the first surface 52 of the deflection member 44 of comprising a network 58, such as a network macroscopically or essentially macroscopically monoplanar or essentially monoplanar as shown in example in Figure 10. The network 58 could be made of any suitable material. For example, a resin can be used to create network 58. Network 58 can be essentially continuous continuous. The network 58 can have a pattern. The network 58 must define within deflection member 44 a plurality of deflection conduits 60. The deflection conduits 60 can be separate or isolated deflection conduits. The network has been described here as "macroscopically monoplane" or "essentially monoplane of macroscopic form." When a surface 62 of the network 58 of the deflection member 44 s is placed in a planar configuration, the surface of the network 62 is essentially monoplane. S says that it is "essentially" monoplane to recognize the fact that deviations from the absolute plane are tolerable, but not preferred, insofar as the deviations n are so significant as to negatively affect the performance of the fibrous structure formed on the limb. Deflection 44. It is said that the network surface 62 is "continuous" because the areas formed by the surface of the network 62 must constitute at least one pattern similar to an essentially uninterrupted network. It is said that the pattern is "essentially" continuous to recognize the fact that the interruptions of the pattern are tolerable, but not preferred, insofar as the interruptions are not significant enough to negatively affect the performance of the fibrous structure made in the deflection member 44. The deflection conduits 60 of the deflection member 44 can be any size and shape or configuration. The deflection conduits 60 can be repeated in a random or uniform pattern. The portions of the deflection member 44 may comprise deflection conduits 60 that are repeated in a random pattern, and other portions of the deflection member 44 may comprise deflection conduits 60 that are repeated in a uniform pattern. The deflection conduits 60 may comprise two or more classes d deflection conduits. A class of deflection conduits 60 'could convert ("produce the first region of domes of a fibrous structure made in accordance with the present invention, for example, as illustrated in Figures 3-6.) Another class of deflection conduits 60" it can be converted into the second region of domes of a fibrous structure manufactured according to the present invention, for example, as illustrated in Figures 3-6.The network surface 62 defines the openings 64 of the deflection ducts 60. The network 58 of the deflection member 60 may be associated with a wire belt or other type of substrate. As shown in Figure 10, the network 58 of the deflection member 60 is associated with a woven belt or band 66. Alternatively, the deflection member 44 may consist of only the network 58. The woven tape 66 may be made of any suitable material known to those with knowledge in the industry for example, polyester. As shown in Figure 11, a cross-sectional view of a portion of the deflecting member 44 taken along the line 1 1 -1 1 of Figure 10, deflection member 44 may be porous since the conduits of Deflection 60 s extend completely through the network 58. In addition, the openings through d deflection member 44 are present in the deflection member 44, since the deflection conduits 60, in combination with the interstices present in the woven tape 66, provide openings completely through the deflection member 44. As shown in Figures 10 and 11, the finite shape of the deflection conduits 60 depends on the pattern selected for the grid surface 62. Said another way, the Deflection ducts 60 are enclosed differently and perimetrically by the network surface 62. An infinite variety of geometries for the network surface are the apertures of the deflection ducts. Practical forms of deflection conduits or deflection conduit openings include circles, ovals and polygons of six sides or less. There is no requirement for the openings in the deflection ducts to be regular polygons or for the sides of the openings to be straight; openings with curved sides can be used, such as trilobal figures. In an example of a deflection member according to the present invention, the open area of the deflection member (measured only in the open area the net surface) should be from about 35% to about 85%. The actual dimensions of the open areas of the network surface (in the plane of the surface of the deflection member) can be expressed in terms of effective free-run. The free effective section was defined as the area of the opening of the deflection conduit in the surface plane of the deflection member divided by a quarter of the perimeter of the deflection conduit opening. The effective free stretch, for most purposes, should be about 0.25 to about 3.0 times, or about 0.35 about 2.0 times the average length of the fibers used in the manufacturing process of the fibrous structure. In an example of a deflection member in accordance with the present invention, at least one, or a majority, or all of the deflection conduits that convert into the first region of domes of a fibrous structure in accordance with the present invention could have a maximum dimension (the large geometric dimension m of the deflection conduit opening) less than about 12.54 m or less than about 2.3 mm, or less than about 2.0 mm, about 1.5 mm, or less than about 1.3 mm. At least one, a majority, or all of the deflection conduits that become the first region of domes of a fibrous structure in accordance with the present invention could have a minimum dimension (the smallest geometric dimension of the opening of the duct of the duct). deflection) of at least about 1.0 mm, or at least about 1.5 mm, or at least about 1.8 mm, or at least about 2.0 mm, or at least about 2.3 mm, or at least about 2.54 mm, or at least about 3.30 mm . The dimensions of the deflection conduits depend, at least partially, on the type or length of the fibers used to manufacture the fibrous structures of the present invention. In an example, the dimension of the deflection ducts is such that small pin holes are not created in the fibrous structure made in the deflection member. In another example of a deflection member according to the present invention, the ratio between the minimum dimension of at least one, or a majority, or all of the deflection conduits that become the second region of domes and the maximum dimension of at least one, or a majority, or all of the deflection conduits that become the first dome region is greater than about 0.8, or greater than about 0.9, or greater than about 1.0, or greater than about 1.25, or greater than about 1.5, or greater than about 1.8, or greater than about 2.0. In yet another example of a deflection member according to the present invention, at least one, or a majority, or all of the deflection conduits that become the second region of domes have a minimum dimension that is greater than the maximum dimension of at least one, or a majority, or all of the deflection conduits that become the first region of domes. As mentioned above, the network surface and deflection ducts can have unique coherent geometries. Two or more geometries can be superimposed on each other to create fibrous structures that have different physical and aesthetic properties. For example, the deflection member may first comprise deflection conduits having openings described by certain shapes in a certain pattern and defining a monoplane network surface, all as mentioned above. A second network surface may be superimposed on the first one. This second network surface may be coplanar with the first and may itself define second conduits of such size as to include one or more integers or fractions of first conduits within its scope. Alternatively, the second re surface may not be coplanar with the first. In other variants, the second re surface may not be planar. In still other variants, the second (superimposed) surface of re can simply describe open or closed figures and not really be a re, in this case, be or not coplanar with respect to the network surface. It is expected that these last variations (in which the second network surface does not really form a network) are the most useful to provide an aesthetic character to the paper web. As in the previous case, an infinite number of geometries combinations of geometries are possible. In one example, the deflection member of the present invention can be an endless belt constructed, inter alia, by a method adapted from the techniques used to manufacture screen screens. By "adapted" is meant the application of the techniques for manufacturing screen printing screens in a broad and general sense, if the improvements, refinements and modifications described below are used to manufacture members that are significantly thicker than the one usually used for Screen printing screens. In general, a porous member (such as a woven ribbon) is coated with a liquid photosensitive polymer resin according to a predetermined thickness. A mask or negative that incorporates the pattern of the preselected network surface to the photosensitive liquid resin is juxtaposed; Then the resin is exposed to light with a suitable wavelength through the mask. This light exposure cures the resin in the exposed areas. The unintended (and uncured) resin is removed from the system and the cured resin forming the network is left, which defines a plurality of deflection conduits therein. In another example, the deflection member can be prepared using the porous member of the appropriate width and length, such as a woven ribbon, for use in the machine selected to manufacture the fibrous structure. The net and the deflection ducts are formed in this woven ribbon in a series of sections of convenient dimensions in discontinuous form, i.e. one section at a time. Below are the details of this non-limiting example of a process for preparing the deflection member. First, a flat molding table is supplied. The width of the molding table is at least equal to the width of the porous woven element and the length is whichever is convenient. It is provided with a means for securing the support film smoothly but firmly to its surface. Suitable means include the provision for applying vacuum across the surface of the molding table, such as a plurality of holes and means for tensioning with little separation from each other. A flexible polymer support film (such as polypropylene) is placed on the molding table and secured thereto, for example, by the application of vacuum or the use of tension. The support film serves to protect the surface of the molding table and to provide a smooth surface from which cured photosensitive resins will be readily released. This support film will not be part of the deflection member once completed. The support film is of a color that absorbs the activating light or is at least semi-transparent, and it is then the molding table that absorbs the activating light.

A thin film of adhesive is applied, such as the 8091 Crown spray performance adhesive, manufactured by Crown Industrial Products Co. Hebron, Ill., To the exposed surface of the backing film or, alternatively, the elbows of the woven tape. . A section of the woven ribbon is then placed in contact with the support film at the place where the adhesive holds it in place. The woven cin is in tension the moment it adheres to the support film. Then, the woven ribbon is coated with the liquid photosensitive resin. As used herein, "coated" means that liquid photosensitive resin is applied to woven tape where it is worked and handled with care to ensure that the openings (interstices) of the woven tape are filled with the resin and that all the filaments comprising the woven ribbon are encased in the resin as completely as possible. Since the elbows of the woven ribbon are in contact with the supporting film, it is not possible to completely wrap the entire filament with photosensitive resin. Enough additional liquid photosensitive resin is applied to form deflection member having a certain preselected thickness. The deflection member may vary from about 0.35 mm to about 3.0 mm in respect of its thickness, and the net surface may be spaced approximately 0.10 mm approximately 2.54 mm from the medial upper surface of the elbows of the woven cin. Any technique with which those with knowledge in industry are familiar can be used to control the thickness of the coating with the liquid photosensitive resin. For example, shims of the proper thickness can be provided adjacent to the section of the deflection member under construction; an excess of liquid photosensitive resin can be applied to the ribbon woven between the wedges, with a straight edge resting on the wedges, and then removed through the surface of the liquid photosensitive resin to remove excess material and form a coating of uniform thickness. Suitable photosensitive resins are selected from various commercially available resin. These are generally polymeric, cured materials crosslinked by activating radiation, usually ultraviolet (UV) light radiation. References containing more information on liquid photosensitive resins include: Green et al., "Photocross-linkable Resin Systems" (Photo-crosslinkable resin systems) J. Macro. Sci-Revs. Macro. Chem., C21 (2), 187-273 (1981 -82); Bayer, "Review of Ultraviolet Curing Technology" (A review of curing technology for ultraviolet radiation) Tappi Paper Synthetics Conf. Proc, September 25-27, 1978, p. 167-172, and Schmidle, "Ultraviolet Curable Flexible Coatings" (Coatings flexible curable ultraviolet), J. of Coated Fabrics (Journal of coated fabrics), 8, 10-20 (July 1978). The three above references are incorporated herein by reference. For example, the network is made with the Merigraph series of resins, manufactured by Hercule Incorporated of Wilmington, Del., USA. Once the woven ribbon is coated with the appropriate amount and thickness of liquid photosensitive resin, the cover film is optionally applied to the exposed surface of the resin. The cover film, which must be transparent to the wavelength of the activating light, serves essentially to protect the mask from direct contact with the resin. A mask (or negative) is placed directly on the cover film or on the surface of the resin. The mask is formed with any suitable material to protect or obscure certain portions of the light photosensitive liquid resin while allowing light to reach other portions of the resin. Of course, preselected design or geometry for the network region are reproduced in this mask in regions that allow the transmission of light, while the geometries preselected for most of the pores are in regions that are opaque to light. A rigid member, such as a glass cover plate is placed on the mask, which serves to help maintain the top surface of the photosensitive liquid resin in a planar configuration. The liquid photosensitive resin is then exposed to the light of the appropriate length of on through the glass cover, the mask, and the cover film, so as to initiate the cure of the liquid photosensitive resin in the exposed areas. It is important to note that, when the procedure described is followed, the resin that normally would be in the shade of a filament, usually opaque to the activating light, is cured.

Curing this particularly small mass of resin contributes to making the lower part of the deflection member flat and isolating one deflection conduit from another. After the exposure, the cover plate, mask, and cover film of the system are removed. The resin is sufficiently cured in the exposed areas to allow the woven tape, together with the resin, to strip the supporting film in strips. The uncured resin is removed from the woven tape using any convenient method, such as vacuum removal and aqueous washing. At this height, a section of the deflection member is essentially in its final form. Depending on the nature of the photosensitive resin and the nature and amount of radiation previously supplied thereto, the remaining, partially cured photosensib resin can be subjected to further radiation in a post-curing operation, as necessary. The support film is stripped from the molding table and the process is repeated with another section of the woven tape. The woven ribbon is appropriately divided into sections of essentially equal and convenient lengths that are numbered serially along its length. Sections with odd numbers are sequentially processed to form the sections of the deflection member, and then sections with even numbers are processed sequentially until all the cin has the characteristics required for the deflection member. You can keep knitted tape in tension at all times. In the construction method just described, the elbows of the woven ribbon actually form a portion of the lower surface of the deflection member. Woven tape can be physically spaced from the bottom surface. Multiple replicas of the technique described above can be used to construct deflection members having more complex geometries. The deflection member of the present invention can be manufactured wholly or partially in accordance with US Pat. no. 4,637,859, granted January 20, 1987 to Trokhan. As shown in Figure 9, after the embryonic fibrous web 36 has been associated with the deflection member 44, the fibers within the embryonic fibrous web 36 are deflected towards the deflection channels present in the deflection member 44. In a As an example of this process step, there is essentially no water removal from the embryonic fibrous web 36 by the deflection conduits after the embryonic fibrous web 36 has been associated with the deflection member 44, but prior to the deflection of the fibers in the conduits of deflection. More water may be removed from the embryonic fibrous web 36 during or after the moment when the fibers deviate from the deflection conduits. The removal of water from the embryonic fibrous web 36 can continue until the consistency of the embryonic fibrous web 36 associated with the deflection member 44 increases from about 25% to about 35%. When it reaches this consistency of the embryonic fibrous web 36, then said web 36 s is called intermediate fibrous web 68. During the process of forming the embryonic fibrous web 36, sufficient water can be removed, for example, by a n-compressive process, from the embryonic fibrous web 36 before it is associated with the deflection member 44 so that the consistency of the embryonic fibrous web 36 can be from about 10% to about 30%. Although the applicants do not intend to be restricted by the theory, it would seem that the deflection of the fibers of the embryonic web and the removal of the water from the embryonic web start almost simultaneously. However, you can imagine examples where deflection and water removal are sequential operations. Under the influence of differential fluid pressure applied, for example, the fibers can be deflected in the deflection conduit with a rearrangement of the accompanying fibers. The removal of water can occur with a continuous rearrangement of the fibers. The deflection of the fibers and the embryonic fibrous web can cause an apparent increase in the surface area of the embryonic fibrous web. Even more, it may seem that the rearrangement of the fibers causes a rearrangement of the spaces or capillary between the fibers. It is believed that the rearrangement of the fibers may encompass one or more modes depending on a number of factors such as, for example, fiber length. The free ends of the longer fibers can simply bend to the space defined by the deflection conduit, while the opposite ends are confined to the region of the network surface. On the other hand, shorter fibers can actually be transported from the region of the network surface to the deflection conduit (the fibers in the deflection conduits will also be rearranged therein). Naturally, it is possible for both modes of rearrangement to occur simultaneously. As indicated, water removal takes place during and after deflection; this water removal can cause a decrease in the mobility of the fibers of the embryonic fibrous web. This decrease in the mobility of the fibr may tend to fix or freeze the fibers in place after deviating and rearranging. Certainly, the drying of the web in a later step of the process of the present invention serves to fix or freeze the fibers in its position. Any suitable means conventionally known in the papermaking industry can be used to dry the intermediate fibrous web 68. Examples of such a suitable drying process include subjecting the intermediate fibros 68 web to conventional or through-air dryers or dryers. Yankee In an example of a drying process, the intermediate fibrous web associated with the deflection member 44 passes around the return roller 46 of the deflection member and moves in the direction indicated by the directional arrow 50. The intermediate fibrous tramway 68 can pass through. first through an optional pre-dryer 70. The pre-dryer 70 can be a conventional through-air dryer (hot-air dryer), with which those familiar in the industry are familiar. Optionally, the pre-dryer 70 can be the so-called dewatering apparatus In said apparatus, the intermediate fibrous web 68 passes through a sector of a cylinder preferably having pores the size of capillaries in the porous cover with a cylindrical shape. Optionally, the pre-dryer 70 may be a combination of the capillary drain apparatus and a dry-type dryer. through air. The amount of water removed in the pre-dryer 70 can be controlled so that the pre-dried fibrous web 72 leaving the pre-dryer 70 has a consistency of about 30% to about 98%.

The pre-dried fibrous web 72, which can remain associated with the deflection member 44, can pass through another return roller 72 of the deflection member while moving to an engraving press roll 48. As the pre-dried fibrous web 72 passes through of a grip line formed between the engraved press roll 48 and a surface of the Yankee dryer 74, the web pattern formed by the top surface 52 of the deflection member 44 is etched into the presecad fibrous web 72 to form a recorded fibrous web 76. The etched fibrous web 76 can then be adhered to the surface of the Yankee dryer 74, where it can be dried to a consistency of at least about 95%. The etched fibrous web 76 can then be foreshortened by the crepe of the etched fibrous web 76 with a creping blade 78 to remove the etched fibros 76 from the surface of the Yankee dryer 74, resulting in the production of a fibrous structure 80 in accordance with the present invention. As used herein, foreshortening refers to the reduction of the length of a dry fibrous web (which has a consistency of at least about 90%, or at least about 95%), which occurs when energy is applied to The fibrous sec-plot is such that the length of the fibrous web is reduced and the fibers in the fibros web are rearranged with a concomitant alteration of the bonds between fibers. Shortening can be achieved in any of several known ways. A common method of foreshortening is creping. Since the network region and the domes are physically associated in the frame, a direct effect on the network region must have, and has, an indirect effect on the domes. In general, the effects produced by the creping of the region of re (the regions of highest density) and the domes (the regions of lowest density) of the plot are different. It is currently believed that one of the most notable differences is an accentuation of the strength properties between the network region and the domes. And to say, as creping destroys the bonds between the fibers, the strength of the creped weft is reduced. It appears that in the frame of the present invention while the tensile strength of the network region is reduced by creping, the resistance to the voltage of the domes is reduced at the same time to a greater extent. Therefore, the difference in resistance to tension between the network region and the domes seemed to be accentuated by creping. The differences of other properties can also be accentuated depending on the fibers particularly used in the plot and the geometries of the network region and the domes. Finally, the fibrous structure 80 can be subjected to further process steps, such as calendering, etching or conversion.

Non-limiting example A fibrous structure according to the present invention having the following properties: Base weight, 0.03 kg / m2, elasticity in CD, 9.1%; resistance to stress on CD, 249 grams per 2.54 cm of sample width; single canvas gauge 335 mm; elasticity in MD, 35.2%; tensile strength in MD, 132 g / cm in width of the sample; Total wet tension (Finch Cup), 14.7 g / cm wide, are prepared from the mod described below. A fiber pulp is prepared comprising about 35% d Kraft northern softwood fiber bleached to approximately 65% Kraft hard mader fiber. The fiber is pulped for 10 minutes to about 4-5 percent of the consistency and diluted from about 2.5% to 3.0% percent consistency after reduced to pulp. A resistance additive in humid Parez (commercially available from Bayer in Pittsburgh, PA) is added to the coarse raw material Kraft bleached fiber of northern softwood in a proportion of approximately 0.01 kg / kg of pulp and to the coarse fiber raw material Hardwood kraft in a proportion of approximately 4.9E-4 kg / kg of pulp). The net opening of the inlet box is approximately 16.5 mm (0.650") .The consistency of the raw material fed into the inlet box is approximately 0.20 percent.The resulting wet fibrous structure is formed with a fixed roof former. and a suction roller on an 84x78 M forming wire (commercially available from Alban International, Appleton, Wisconsin, USA). The speed of the forming wire is approximately 3.81 meters per second. The embryonic fiber structure is then drained to a consistency of approximately 18-19%, using vacuum suction pumps before transferring it to a drying belt, which travels approximately 3.81 meters per second. Next, the fibrous structure is transferred to a deflection member, comprising deflection conduits, by the suction of a shoe with a vacuum of approximately 30-33 cm of mercury. Design is imparted to the fibrous structure while diverting to the deflection conduits. The fibrous structure is transported to a multistage suction box with a vacuum of approximately 30-33 cm of mercury, resulting in an intermediate fibrous structure with a consistency of approximately 27%. The intermediate fibrous structure is transported to a drying operation with a temperature of about 168 ° C to 177 ° C and is dried to a consistency of about 58.5% to produce a pre-dried fibrous structure. The pre-dried fibrous structure is then transferred through an engraving press roll to a Yankee dryer that moves at a speed of about 3.81 m / s to form a recorded fibrous structure. Next, the etched fibrous structure is creped on the surface of the Yankee dryer to a final dryness of at least about 97% consistency to produce a creped fibrous structure. The physical properties of the creped fiber structure without conditioning are then tested. The resulting creped fibrous structure has the following properties.

Test methods Structural height test method in dry or wet state The structure height of the dry and wet tissue paper is measured with a GFM Primos optic profiler distributed by GFMesstechnik GmbH, Warthestra e 2 D14513 Teltow / Berlin, Germany. The GFM Primos optical profiler includes a compact optical measurement sensor based on the micro mirror projection, which comprises the following main components: a) a DMD projector with 1024 X 768 controlled direct digital micro mirrors; b) a CCD camera with high resolution (1300 1000 pixels); c) a projection optics adapted to a measuring area of at least 27 X 22 mm; and d) an engraving optics adapted to a measurement area of at least 27 X 22 mm; a table tripod based on a small stone plate; a source of cold light; a computer for measurement, control and evaluation; measurement software, control evaluation ODSCAD 4.14, English version; and adjustment probes for lateral (y) and vertical (z) calibration. The GFM Primos optical profiler measures the surface height of a sample using the digital mirror pattern projection technique. The result of the analysis is a map of the surface height of (z) versus the displacement of xy. The system has a visual field of 27 X 22 mm with an xy resolution of 21 microns. The resolution of altur should be set between 0.10 and 1.00 miera. The height interval is 64,000 times l resolution.

It is not necessary to prepare the dry samples for later measurement. In the case of a wet sample, prepare an 11.33 cm wide by 20.32 cm long strip of fibrous structure or tissue paper hygienic product that will be tested. First, measure the dry sample as described below. Holding the end of the specimen vertically at the corners, slowly submerge and carefully place in a pool of water, a portion of the 10.16 cm long sample (1/2 of the sample length) at the distal end of the specimen. where the sample is held. Once the submerged portion of the sample is completely saturated, remove it from the water and remove the water from it by carefully placing the saturated portion on a dry cloth d Bounty® paper towel, avoiding wrinkles or wrinkles in the tissue paper. . After 20 seconds, carefully remove the portion of the drained sample from the paper towel cloth and place it on a second dry canvas of Bounty® paper towel for 20 seconds. Use similarly a third dry canvas d paper towel brand Bounty® for another 20 seconds. While maintaining the unsaturated portion of the sample, place the saturated portion carefully on a stainless steel square of 130 x 130 x 2 mm with a cutout of 90 x 90 mm in the center. If necessary, slightly tighten the sample so that when the stainless steel square is on a flat surface, the fibrous structure or the tissue paper product does not curl downward or touch the flat surface. The slight contact between the portion of the saturated sample and the steel square serves to adhere the portion of the sample squared and prevents it from moving. Before carrying out the measurement described below, let the canvas dry for another 2 minutes in the air. To measure a sample of fibrous structure or a sample of tissue paper hygienic product perform the following procedure: 1. Turn on the cold light source. The settings of the cold lu source should be 4 and C showing on the 3000K screen; Turn on the computer, monitor and printer and open the softwar ODSCAD 4.14. Select the "Start Measurement" icon from the Primos task bar and then click on the "Uve Pie" button. Place the sample under the projection head, center the characteristics of interest within the visual field of the active image adjust the distance to focus better. Press the "Pattern" button repeatedly to project one of the different focus patterns to achieve the best focus (the software's grid should be aligned with the projected grid to achieve the optimum focus). Place the projection head in a normal position with respect to the surface of the sample. For dry samples, use a permanent marker to make small dots in the corners of the lighting square of the sample. In the case of wet samples, use the four previous marcs to align the characteristics of interest again with visual field. Adjust the brightness of the image by changing the aperture of the lens through a hole next to the head of the projector or by changing the gain settings of the on-screen camera. I do not set the gain above 7 to control the amount of electronic noise. When the lighting is optimal, the red circle of the lower part of the screen with the indication "I.O." it will change to green. Select the standard measurement type.

Press the "Measure" button. This will freeze the live image of the screen and at the same time the image will be captured digitized. It is important not to move the sample during this time to prevent the captured images from losing definition. L images will be taken in approximately 20 seconds. If the height image is satisfactory, save it in a computer file with the extension ".orne". This will also save the image file of the camera with the extension ".kam". To transfer the data to the analysis part of the software, click on the icon "clipboard / man" (clipboard / manual). Now, press the "Draw lines" icon or "Dra freehand line" as needed. For the samples in which the elevated structures are on a straight line, select the starting point and the end point of the line with the mouse so that the marked line crosses several characteristics. If the elevated structures are not in a straight line, use the freehand line tool to mark points at the centers of the structures so that they connect to a curved line. After drawing the line, select "Show sectional line diagram" to show a graphical representation of the altitude compared to the distance along the line. Use the tool "Vertical distance" to mark a point in the region of initial values between structures and a point in the upper part of the structure and record the calculated height Repeat the measurement for each structure along the line . The average height of the characteristics is expressed in units d miera.

Opacity test method To quantify the relative differences in opacity directly, s use a Nikon stereomicroscope model SMZ-2T, marketed by Nikon Compan of New York, NY, in combination with a C-mount camera Dage MTI d Michigan City, Indiana , model NC-70. The microscope image is v stereoscopically through the eyepieces or in two dimensions on a computer monitor. The analog image data from the camera attached to the microscope is digitized by a video plate, manufactured by Data Translation of Marlbor Massachusetts, USA, and analyzed with a Macintosh IIx computer, manufactured by Apple Computer Co. of Cupertino, California, USA The software suitable for scanning and analysis is IMAGE, version 1.31, available from the National Institute of Healt in Washington, D.C., USA. If the medium density options of the IMAGE software are used for the opacity, the relative differences in opacity are easily obtained due to the attenuation of the light passing through several regions of interest of a sample of fibrous structure or hygienic product of tissue paper. The medium density option gives the gray scale value of a given region in consideration of the average pixel value in the gray scale of that region. The pixels have a gray scale range that ranges from 0 (pure black) to 255 (pure white). Without the sample on the microscope stage, the lights in the room are darkened and the intensity of the light source of the microscope is adjusted to make the gray levels of the regions are within the range of 0 to 255. The illumination it is optimized to make the background distribution of gray levels decrease and approach zero as much as possible. The sample is placed on the microscope platform with a magnification of approximately 10X. To compensate for variations in background lighting, subtract each of the actual sample images. After this subtraction of the background, the region of interest is defined with the mouse and the average value of the gray scale is read directly from the monitor. If desired, the absolute opacity of the different regions is determined by calibrating IMAGE with optical density standards.

Creping frequency test method The creping frequency of a fibrous structure or tissue paper hygienic product can be measured with the Nikon stereomicroscope, the Dage camera and the aforementioned IMAGE data analysis software, in combination with a card. Video Data Translation of Marlboro, Massachusetts, USA, model DT2255. The system is calibrated using a ten-millimeter optical micrometer and a ruler tool to draw a line between two points separated by a known distance. The scale is sent to this distance. After calibrating it, the magnification of the microscope is set to 70X. A sample of the fibrous structure or tissue paper hygienic product is placed by examining the microscope platform and focused without changing the magnification. The distance between two points of interest is measured with the IMAGE program's rule tool. The reciprocal of this measurement is recorded as a creping frequency data point and the measurement is repeated enough times to ensure that significant statistical data are obtained.

All documents cited in the Detailed Description of the invention are incorporated in their relevant parts as reference in the present document; The citation of any document should not be construed as an admission that it constitutes a prior industry with respect to the present invention. While particular embodiments of the present invention have been illustrated and described, it will be apparent to those with knowledge in the industry 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

1. A fibrous structure comprising a surface and a design, characterized in that the design comprises a plurality of distinct, non-linear design elements, wherein the different non-linear design elements are spatially associated with each other in such a way that the plurality of elements of Different non-linear designs form a linear design element within the design, and wherein the design comprises less than the entire surface area of the surface of the fibrous structure.

2. The fibrous structure according to claim 1, further characterized in that at least one of the different, non-linear design elements has a relationship between the structural height in the wet state and the structural height in the dry state of at least about 0.

3 . 3. The fibrous structure according to claim 1, further characterized in that the design comprises a plurality of linear design elements formed of a plurality of distinct, non-linear design elements.

4. The fibrous structure according to claim 1, further characterized in that at least one of the plurality of distinct, non-linear design elements exhibits a minimum dimension of at least 1.0 mm.

5. The fibrous structure according to claim 1, further characterized in that the fibrous structure exhibits a difference in value in an intensive property of the fibrous structure between at least one of the plurality of distinct, non-linear design elements, and a region adjacent to the surface of the fibrous structure.

6. A fibrous structure comprising: a. A network region; b. a first region of domes comprising at least one dome; c. a second region of domes comprising three or more domes, characterized in that there is a different value for the intensive properties between the network region and the first region of domes and / or between the network region and the second region of domes and / or between the first region of domes and the second region of domes. The fibrous structure according to claim 6, further characterized in that at least one dome of the first region of domes is comprised in the network region. 8. The fibrous structure according to claim 6, further characterized in that the first domed region comprises a plurality of domes. The fibrous structure according to claim 6, further characterized in that the three or more domes of the second region of domes form a design element of a design. 10. A fibrous structure comprising a design, further characterized in that the design comprises at least three distinct, non-linear design elements, spatially arranged to form a linear design element, further characterized by at least one of at least three design elements distinct, non-linear comprises two visually discernible regions. 1. The fibrous structure according to claim 10, further characterized in that the fibrous structure comprises a bottom matrix. 12. The fibrous structure according to claim 1, further characterized in that at least the different, non-linear design elements are superimposed on the background matrix. 13. The fibrous structure according to claim 1, further characterized in that the bottom matrix of the fibrous structure is adjacent to at least one of at least three distinct, non-linear design elements. 14. A method for manufacturing a fibrous structure; the method comprises the step of forming a fibrous structure comprising a design comprising at least three distinct, non-linear design elements, spatially arranged to visually represent a linear design element. 15. A fibrous structure comprising a surface and a design, further characterized in that it comprises at least one or at least two, or at least three distinct, non-linear design elements; wherein at least one of the distinct, non-linear design elements remains after the design element comes into contact with water, and wherein the design encompasses an area less than the entire surface area of the surface of the design. fibrous structure.