MX2009000078A - A web comprising a tuft. - Google Patents

Abstract

Webs, such as fibrous structures, having a tuft, sanitary tissue products employing same and methods for making same are provided. More particularly, webs, such as fibrous structures, having a tuft employing a non-extensible material, such as non-extensible fibers, sanitary tissue products employing same and methods for making same are provided.

Description

A PLOT THAT COMPRISES A PADDING FIELD OF THE INVENTION The present invention relates to webs, such as fibrous structures, comprising a padding, the sanitary paper products comprising them and methods for their manufacture. More particularly, the present invention relates to wefts, such as fibrous structures, comprising a padding comprising a non-extensible material, such as non-stretchable fibers, the sanitary paper products comprising them and methods for their manufacture.

BACKGROUND OF THE INVENTION The wefts, particularly fibrous structures, comprising padding are known in the industry. These fibrous structures use extensible fibers and / or films to form cushions within the fibrous structures. For example, in an earlier industry run, the polypropylene fibers are blow molded onto a fibrous cellulose pulp structure and then subjected to a cushion-generating process that pushes the polypropylene fibers through the cellulosic pulp fibers. , thus creating a padding of polypropylene fibers (an extendable fiber padding). The formulators of these wefts and / or fibrous structures apparently never believed that the padding could be formed of a non-extensible material, especially non-extensible fibers. Some of their concerns include the breakage of non-extensible fibers during the quilting process before a quilt could be formed. As a result, it has never been before achieved a weft comprising a padding comprising a non-stretchable material, especially non-stretchable fibers. Since the fiber and / or extensible film materials are generally thermoplastic polymers, the cost of these materials is considerable for use in fibrous structures that are incorporated into sanitary paper products, such as toilet paper, disposable tissue and towels of paper, in particular, thus making it difficult for the manufacturers of sanitary paper products to use these thermoplastic polymers. Accordingly, there is a need for wefts, particularly fibrous structures, comprising a non-extensible material, particularly non-extensible fibers, wherein the fibrous structure comprises a padding comprising a non-stretchable material, particularly non-stretchable fibers, the sanitary paper products. who understand them and methods for their manufacture.

BRIEF DESCRIPTION OF THE INVENTION The present invention meets the needs described above by providing a weft, such as a fibrous structure, comprising a padding comprising a non-stretchable material, particularly non-stretchable fibers. In an example of the present invention, a weft, such as a fibrous structure, is provided, comprising a padding comprising a non-stretchable material, such as non-stretchable fibers. In another example of the present invention, there is provided a method for manufacturing a frame according to the present invention, wherein the method comprises the steps of: to. forming a web comprising a non-extensible material, such as non-extensible fibers; b. imparting stretchability to the web, or at least a portion of the web, to form an extendable web or portion of the web, for example so that the web exhibits a stretch of less than 800% as measured by the test method traction of short section; and c. subjecting the stretchable weft or portion of the weft to a quilt-generating operation so that a quilt comprising a non-extensible material (e.g., non-stretchable fibers) is formed in the weft. In yet another example of the present invention, there is provided a single or multi-sheet health paper product comprising a web in accordance with the present invention. Accordingly, the present invention provides a weft comprising a padding comprising a non-stretchable material, particularly non-stretchable fibers, a sanitary paper product comprising such a weft and a method for manufacturing such weft.

BRIEF DESCRIPTION OF THE FIGURES Figure 1 is a schematic representation of a fibrous structure in accordance with the present invention; Figure 2 is a perspective view of an apparatus for forming a fibrous structure in accordance with the present invention; Figure 3 is a cross-sectional representation of the apparatus shown in Figure 2; Figure 4 is a perspective view of a portion of the apparatus of Figure 2 to form a fibrous structure of the present invention; Figure 5 is an enlarged perspective view of a portion of the apparatus of Figure 4; Figure 6 is a schematic representation of a portion of a multi-leaf fibrous structure in accordance with the present invention; Figure 7 is a schematic representation of a portion of a multi-leaf fibrous structure in accordance with the present invention.

DETAILED DESCRIPTION OF THE INVENTION As used herein, "screen" means a substantially planar structure, for example, a film and / or a fibrous structure. The screen may comprise a surface comprising corrugations. These undulations can be formed by the creping of the weft and / or the hasty transfer of the weft during the manufacturing process of the weft. For the purposes of the present invention only, "quilting" means a region, in the form of a continuous circuit, of the fibrous structure and / or the sanitary paper product extending from the fibrous structure and / or the sanitary paper product. along or practically along the Z axis ("Z-axis", as used herein, is commonly understood in the industry to indicate an "out-of-plane" direction generally orthogonal to the XY plane, as shown by example, in Figure 1). In one example, a padding in accordance with the present invention is a continuous circuit extending along the Z axis from the X-Y plane of the fibrous structure and / or the sanitary paper product, wherein the padding comprises a non-woven material. extendable, such as non-extensible fibers. In another example, a padding in accordance with the present invention is a continuous circuit extending along the Z axis from the XY plane of the fibrous structure and / or the sanitary paper product, wherein the padding comprises at least 10% and / or at least 20% and / or at least 30% and / or at least 50% and / or 100% or less and / or 90% or less and / or 70% or less by weight of the total fibers present in the non-extensible fiber padding. In another example, the padding comprises 100% by weight of the total fibers present in the non-extensible fiber padding; in other words, in this example, the padding is formed entirely of non-stretchable fibers. The padding can define an open or virtually open interior hollow area that is generally free of fibers. In other words, the padding of the present invention may have a "tunnel" -like structure instead of a "tent" -like rib element exhibiting continuous side walls, as taught in the prior art. In one example, the tunnel is oriented in the machine direction (MD) of the fibrous structure. If the web comprises a surface having corrugations oriented transversely to the machine, then the cushion can be oriented perpendicular to such corrugations. In another example, as a consequence of the padding, a discontinuity is formed in the fibrous structure and / or the sanitary paper product in its X-Y plane. As used herein, a "discontinuity" is an interruption along the lateral / surface of the fibrous structure and / or the sanitary paper product opposed to the padding. In other words, a discontinuity is a hole and / or cavity and / or void in a side / surface of the fibrous structure created as a result of the formation of the padding on the opposite side / surface of the fibrous structure and / or the product of toilet paper. In one example, a deformation on a surface of the fibrous structure and / or the sanitary paper product such as a bump, bump, circuit or other projecting structure extending from a surface of the fibrous structure and / or the sanitary paper product of the present invention. In one example, the cushions of the fibrous structure of the present invention can increase the caliper (wet and / or dry) and / or volume (wet and / or dry)) of the fibrous structure and / or the sanitary paper product. For example, the padding of the fibrous structure of the present invention can increase the caliper by at least about 10% and / or at least about 20% with respect to the fibrous structure and / or the sanitary paper product before the formation of cushions. In another example, the padding can be oriented inward on a multi-leaf fibrous product, can be oriented outward on a multi-sheet toilet paper product, and can be oriented so that one sheet has the padding facing inward and another sheet has the padding facing outwards in / on the multi-sheet toilet paper product. In yet another example, the fibrous structure and / or cushioned toilet paper product of the present invention can be wound twisted to form a roll of the fibrous structure and / or the sanitary paper product. This roller may exhibit an effective gauge that is greater than the combined gauge of the fibrous structure and / or the non-cushioned tissue paper product. In yet another example, the cushions of the fibrous structure and / or the sanitary paper product can be introduced gradually to be etched, printed and / or punched on and / or within the fibrous structure and / or the sanitary paper product. In yet another example, the quilts of the fibrous structure and / or the sanitary paper product can generate improved aesthetic characteristics through the creation of different heights / elevations and / or different texture regions, different opacity regions, different colors (when the quilts have colors (same or varied), the placement in ink or engraving sequence or other distinguishing marks within the fibrous structure and / or the sanitary paper product As used herein, "non-stretchable material" refers to a material that is present within a portion of a weft, such as a fibrous structure, wherein the weft exhibits a stretch of less than 800% and / or less than 700% and / or less than 600% and / or less than 500% and / or less than 400% and / or less than 300% as measured according to the test method of short section traction described herein In one example, a surface of a weft in accordance with the present invention comprises a non-extensible material In addition to a non-extensible material, such as non-extensible fibers, a surface of a weft of compliance with the present invention may comprise extensible fibers, such as thermoplastic polymer fibers. These thermoplastic polymer fibers may comprise a thermoplastic polymer selected from the group consisting of: Polypropylene, polypropylene copolymers, polyethylene, polyethylene copolymers, polyethylene terephthalate, polyethylene terephthalate copolymers and mixtures thereof. As used herein "non-extensible fibers" refers to fibers that are present within a portion of a weft, such as a fibrous structure, wherein the weft exhibits a stretch of less than 800% and / or less than 700% and / or less than 500% and / or less than 400% and / or less than 300% as measured according to the short stretch tensile test method described herein. In one example, one or more of the non-extensible fibers exhibit a length of less than about 7 mm and / or less than about 6.5 mm and / or less than about 6 mm and / or less than about 5 mm and / or less than about 3 mm and / or less than about 2.5 mm and / or from about 0.4 mm to about 7 mm and / or from about 0.5 mm to about 6.5 mm and / or from about 0.5 mm to about 6 mm and / or from about 0.6 mm to about 5 mm. In an example, one or more of the non-extensible fibers comprises a fiber of natural origin. As used herein, "Fiber" means an elongated physical structure having an apparent length that considerably exceeds its apparent diameter, i.e., a length-to-diameter ratio of at least about 10. Fibers having a cross section Non-circular and / or tubular shapes are common; the "diameter", in this case, can be considered to be the diameter of a circle having a cross-sectional area equal to the cross-sectional area of the fiber. More specifically, as used herein, the term "fiber" refers to fibers that make up the fibrous structure. The present invention encompasses the use of a variety of fibers to manufacture the fibrous structure, such as, for example, natural fibers or synthetic fibers or any other suitable fiber, and any combination thereof. The natural fibers that make up the fibrous structure ("fibers of natural origin") useful in the present invention include fibers of animal origin, fibers of mineral origin, other plant fibers (such as trichomes and / or seed hairs) and mixtures of these. The fibers of animal origin can be selected, for example, from the group consisting of wool, silk and other protein fibers of natural origin and mixtures thereof. The other vegetable fibers can, for example, be derived from a plant selected from the group consisting of wood, cotton, cotton linters, flax, sisal, abaca, hemp, hesperaloe, jute, bamboo, bagasse, kudzu, corn, sorghum, squash, maguey, scourer and mixtures of these.

Wood fibers; often called wood pulps include chemical pulps, such as Kraft pulps (sulfate) and sulfite pulps, and also mechanical and semimechanical pulps including, for example, crushed wood, thermomechanical pulp, chemomechanical pulp (CMP, by its abbreviations in English), pulm quimiotermomecánica (CT P, for its acronym in English) and pulp sulphite semi-chemical neutral (NSCS, for its acronym in English). However, chemical pulps may be preferred since they impart a superior tactile feel of softness to the sheets of fabric made thereof. Pulps derived from deciduous trees (hereinafter also referred to as "hardwood") and conifers (hereinafter also referred to as "coniferous wood") can be used. Hardwood and softwood fibers can be blended, or alternatively, layered to provide a layered or layered material. U.S. Pat. no. 4,300,981 and no. 3,994,771 are incorporated herein by reference for the purpose of disclosing the stratification of hardwood and softwood fibers. Also applicable to the present invention are fibers derived from recycled paper, which may contain any or all of the aforementioned categories as well as other non-fibrous materials such as fillers and adhesives used to facilitate the original manufacture of paper. Wood pulp fibers can be short (characteristic of hardwood fibers) or long (characteristic of softwood fibers). Non-limiting examples of short fibers include fibers derived from a fiber source selected from the group consisting of acacia, eucalyptus, maple, oak, poplar, birch, poplar, alder, ash, cherry, elm, American walnut, poplar, gum, walnut, white acacia, sycamore, beech, catalpa, sassafras, melina, albizia, kadam and magnolia. Non-limiting examples of long fibers include fibers derived from pine, spruce, spruce, American larch, hemlock, cypress and cedar. Coniferous fibers obtained by the Kraft process and originating from more northern climates are preferred. In addition to the various wood pulp fibers, other cellulosic fibers, such as cotton, rayon and bagasse, can be used in the present invention. Synthetic fibers ("fibers that do not occur in nature"), such as polymer fibers, can also be used. Elastomeric polymers, polypropylene, polyethylene, polyester, polyolefin, polyvinyl alcohol and nylon can be used. The polymer fibers can comprise natural polymers from sources, such as starch, proteins and / or cellulose. The polymer fibers can be manufactured by any suitable methods known in the industry. An embryonic fibrous web can be prepared, generally, from an aqueous dispersion of paper fibers, although dispersions in liquids other than water can be used. The fibers are dispersed in the carrier liquid to have a consistency of about 0.1 to about 0.3 percent. It is believed that the present invention can also be applicable to moisture forming operations, wherein the fibers are dispersed in a carrier liquid to have a consistency of less than about 50% or less than about 10%. As used herein, "fibrous structure" means a structure comprising one or more fibers. In one example, a fibrous structure according to the present invention means an ordered array of fibers within a structure to perform a function. Non-limiting examples of fibrous structures of the present invention include composite materials (including reinforced plastics and reinforced cement), paper, fabrics (including woven, knitted and non-woven fabrics) and protective pads (for example, for diapers or products for feminine hygiene). A bag of loose fibers is not a fibrous structure in accordance with the present invention.

Non-limiting examples for making fibrous structures include the known wet laying and air laying processes used for paper making. Such processes generally include steps to prepare a fiber composition in the form of a suspension in a moist medium, more specifically, in an aqueous medium, or a dry, more specifically, gaseous medium, ie, with air as medium. The aqueous medium used for wet laying processes is often referred to as fiber pulp. The fibrous suspension is then used to deposit a plurality of fibers in a forming wire or band, such that an embryonic fibrous structure is formed, after which the drying and / or bonding of the fibers together results in a structure fibrous. Further processing of the fibrous structure can be carried out in such a way that a finished fibrous structure is formed. For example, in typical papermaking processes, the finished fibrous structure is the fibrous structure which is wound on a reel at the end of the papermaking process and which can subsequently be converted into a finished product, for example, a sanitary paper product. The fibrous structures of the present invention can be homogeneous or stratified. If they are stratified, the fibrous structures may comprise at least two, and / or at least three, and / or at least four, or at least five layers. As used herein, "sanitary paper product" means a soft, low density (ie, <0.15 g / cm 3) weft useful as a cleaning implement for post-urine and post-urine cleaning defecation (toilet paper), for otorhinolaryngological discharges (disposable handkerchiefs), and for multifunctional absorbent and cleaning uses (absorbent towels). The sanitary paper product may be wound twisted about itself around a core or without a core, to form a roll of sanitary paper product. "Base weight", as used herein, is the weight per unit area of a sample indicated in pounds / 3000 ft2 or 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 and / or a paper product comprising this fibrous structure in a higher loading csp with a minimum resolution of 0.01 g. The 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. Then the average weight (g) and the average area of the samples (m2) are calculated. The basis weight (g / m2 or gsm) is calculated by dividing the average weight (g) by the average area of the samples (m2). As used herein, "gauge" or "sheet gauge" refers to the macroscopic thickness of a single-sheet fibrous structure, canvas product or film in accordance with the present invention. The size of a fibrous structure, canvas product or film according to the present invention is determined by cutting a sample of the fibrous structure, canvas or film product so that it is larger than the loading surface of a self-centering foot. , where the load surface of the self-centering foot has a circular surface area of approximately 20.25 cm2 (3.14 in2). The sample is confined between a flat horizontal surface and the loading surface of a self-centering foot. The loading surface of the self-centering foot applies a confining pressure to the sample of 15.5 g / cm2 (approximately 1.44 kPa (0.21 psi)). The gauge is the resulting space between the flat surface and the loading surface of a self-centering foot. These measurements can be obtained using an electronic thickness tester VIR Model II available from Thwing-Albert Instrument Company, Philadelphia, PA. The caliber measurement is repeated and recorded at least five (5) times to calculate the average caliber. The result is reported in millimeters. In one example, the fibrous structure and / or the sanitary paper product of A single sheet in accordance with the present invention exhibits a sheet gauge of at least about 0.508 mm (20 mils) and / or at least about 0.762 mm (30 mils) and / or at least about 1.524 mm (60). mils). As used herein, the term "effective gauge" means the radial thickness that occupies a layer of a fibrous structure and / or twisted paper health product of such a fibrous structure and / or sanitary paper product. To facilitate the determination of effective caliber, an effective caliper test method is described herein. The effective size of a sample of a fibrous structure and / or sanitary paper product may vary from the size of the canvas of the fibrous structure and / or the sanitary paper product due to the tension of the rolling, nesting of the deformations, etc. As used herein, "density" or "bulk density" means the mass per unit volume of a material. For fibrous structures, the density or bulk density can be calculated by dividing the basis weight of a sample of fibrous structure by the size of the sample of the fibrous structure with the appropriate conversions incorporated therein. The density and / or bulk density used herein are expressed in g / cm3. The "dry tensile strength" (or simply "tensile strength", as used herein) of a fibrous structure and / or sanitary paper product is measured according to the following. Strips of 2.5 cm X 12.7 cm (one (1) inch by five (5) inches) of fibrous structure and / or tissue paper product are provided. The strip is placed on a Model 1122 electronic traction tester commercially available from Instron Corp., Canton, Massachusetts, in a conditioned room at a temperature of 73 ° F ± 4 ° F (approximately 28 ° C ± 2.2 ° C) and a relative humidity of 50% ± 10%. The crosshead speed of the test apparatus Traction is 4.0 inches per minute (approximately 10.2 cm / minute) and the length of the needle is 4.0 inches (approximately 10.2 cm). To determine the dry stress resistance this method can be used in any direction. The "total resistance to the tension in dry" or TDT (for its acronym in English) is the total result arithmetic of the resistance to the tension MD and CD of the strips. As used herein, the terms "absorbent" and "absorbency" mean the characteristic of the fibrous structure that allows it to absorb and retain fluids, particularly water and aqueous solutions and suspensions. In assessing the absorbency of the paper, not only the absolute amount of liquid that will retain a certain amount of paper is important, but the speed at which the paper will absorb the fluid is also important. Absorbency is measured in the present by the horizontal full sheet (HFS) test method described in the test methods section of this document. In one example, the fibrous structures and / or sanitary paper products according to the present invention exhibit an HFS absorbency greater than about 5 g / g, greater than about 8 g / g and more than about 10 g / g about 100. g / g In another non-limiting example, the fibrous structures and / or sanitary paper products according to the invention exhibit an HFS absorbency of about 12 g / g to about 30 g / g. "Machine direction" or "MD", as used herein, means the direction parallel to the flow of the fibrous structure through the machine for making paper and / or the equipment to manufacture the product. "Cross machine direction" or "CD", as used herein, means the direction perpendicular to the machine direction in the same plane of the fibrous structure and / or the paper product comprising the fibrous structure.

"Leaf" and "leaves", as used herein, mean an individual fibrous structure optionally 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 "sheets" or multiple "sheets", for example, by folding it over itself. As used herein, the articles "a" and "ones" when used in the present invention, for example, "an anionic surfactant" or "a fiber", are understood to mean one or more of the claimed material or describe. All percentages and proportions are calculated by weight, unless indicated otherwise. All percentages and proportions are calculated based on the total composition, unless otherwise indicated. Unless otherwise specified, all levels of the component or composition are expressed in reference to the active level of that component or composition, and are exclusive of impurities, for example, residual solvents or by-products, which may be present in commercially distributed sources.

Fibrous Structure The fibrous structure and / or sanitary paper product of the present invention can be fabricated from any suitable fibrous precursor structure (a fibrous structure that has not been subjected to a quilt-generating operation) known to those experienced in the industry. In one example, the fibrous precursor structure can be manufactured by an air-laying process. In another example, the fibrous precursor structure can be manufactured by a wet laying process. The fibrous precursor structure can be made from a fibrous supply that produces a single-layer embryonic fibrous web or a fibrous supply that produces a multi-layered embryonic fibrous web. In one example, the fibrous precursor structures according to the present invention may be selected from the group consisting of: Fibrous structures dried by through air, fibrous structures of differential density, fibrous structures of differential basis weight, fibrous structures laid wet, fibrous structures laid air, conventional dried fibrous structures, creped or non-creped fibrous structures, fibrous structures densified with the application of a pattern or densified without the application of a pattern, compacted or non-compacted fibrous structures, particularly non-compacted high-volume, fibrous structures not woven fabrics comprising synthetic or multicomponent fibers, homogeneous or multilayer fibrous structures, double recrossed fibrous structures, non-creped fibrous structures, coform fibrous structures and mixtures thereof. In one example, the air-laid fibrous structure is selected from the group consisting of fibrous air-laid thermal bonding structures (TBAL), fibrous structures joined with air-laid latexes (LBAL). ) and fibrous structures of mixed union stretched to the air (MBAL, for its acronym in English). The fibrous precursor structures may exhibit a virtually uniform density or may exhibit regions of differential density. In other words, regions of high density compared to other regions within the fibrous structure with pattern. Generally, when a fibrous structure is not pressed against a cylindrical dryer, such as a Yankee dryer, while the fibrous structure is still wet and supported by a cloth for air-drying or other cloth, or when a fibrous structure lying on the air is not linked by points, the fibrous structure exhibits, in general, a practically uniform density. In one example, the fibrous precursor structure of the present invention comprises 100% or approximately 100% by weight, based on a fibrous precursor structure of wood pulp fibers. In another example, the fibrous precursor structure of the present invention comprises from about 100% to about 10% and / or from about 100% to about 30% and / or from about 100% to about 50% and / or about 100% to about 75% by weight, based on the dry fibrous precursor structure of wood pulp fibers. In this type of fibrous precursor structure, the other fibers, if any, may be continuous, virtually continuous synthetic fibers, or cut synthetic fibers. Sufficient extensibility can be imparted to a precursor web (fibrous structure) to form a cushion which in any other way comprises a non-extensible material, by any suitable means such as forming the web into a structured, through-air, foreshortened, air-dried fabric. creped, wet microcontraction, and / or precipitated transfer. Alternatively, the precursor web (eg, the fibrous structure) may not be foreshortened. The fibrous precursor structure can be patterned. A pattern-densified fibrous structure is characterized by having a relatively voluminous field of relatively low fiber density and a set of densified zones of relatively high fiber density. This voluminous field is alternatively characterized as a field of padded regions. The densified zones are alternatively referred to as knuckle regions. These densified zones may be discreetly spaced within the high volume field or they may be interconnected, wholly or partially, within the high volume field.

The fibrous precursor structure may not be compacted or patterned. The fibrous precursor structure can be homogeneous or comprise multiple layers. The fibrous precursor structure can be manufactured from a fibrous supply that produces a single-layer embryonic fibrous web or a fibrous supply that produces a multilayer embryonic fibrous web. The fibrous precursor structures of the present invention may comprise any suitable ingredients known in the industry. Non-limiting examples of suitable ingredients that can be included in fibrous precursor structures include permanent and / or temporary wet strength resins, dry strength resins, softening agents, wetting agents, lint-resistant agents, absorbency-enhancing agents , immobilizing agents, particularly in combination with emollient lotion compositions, antiviral agents including organic acids, antibacterial agents, polyol polyesters, antimigration agents, polyhydroxyl plasticizers, opacifying agents, binding agents, disintegrating agents, colorants, soil release polymers (hydrophilizing polymeric agents, wetting agents and mixtures thereof) These ingredients, when present in the fibrous structure of the present invention, may be present at any level based on the dry weight of the fibrous structure. teeth, when present, may be present at a level of from about 0.001 to about 50% and / or from about 0.001 to about 20% and / or from about 0.01 to about 5% and / or from about 0.03 to about 3% and / or from about 0.1 to about 1.0% by weight, based on a dry fibrous precursor structure. The fibrous structure of the present invention and / or paper products sanitary ware comprising it can have a basis weight of about 10 g / m2 to about 120 g / m2, and / or from about 14 g / m2 to about 80 g / m2 and / or from about 20 g / m2 to about 60 g / m2. The fibrous structures of the present invention and / or the sanitary paper products comprising them can have a total dry strength strength greater than about 59 g / cm (150 g / in), and / or about 78 g / cm (200 g / in) at about 394 g / cm (1000 g / in) and / or from about 98 g / cm (250 g / in) to about 335 g / cm (850 g / in). The fibrous structures of the present invention and / or the sanitary paper products comprising said fibrous structures may have a density of about 0.60 g / cc or less, and / or about 0.30 g / cc or less, and / or about 0.04 g / cc to approximately 20 g / cc. The fibrous structures of the present invention and / or the sanitary paper products comprising such fibrous structures may have a fluff of about 2 or more and / or about 4 or more and / or from about 6 or more to about 12 or less and / or about 10 or less and / or about 8 or less. As shown in Figure 1, a fibrous structure and / or the sanitary paper product 10 comprising a padding 12 is provided. The padding 12 comprises a non-stretchable material 14, such as non-stretchable fibers 16. As a result of the creation of the pad 12, a hollow open area 20 is formed within the pad 12 and a discontinuity 22 is formed on the non-padded surface 24 of the fibrous structure and / or the sanitary paper product 10. Even when the schematic example does not show it, the discontinuity 22 may be smaller in width in the X plane than the maximum width in the X plane of the cushion 12. The fibrous structure and / or the sanitary paper product 10 may made of fibers 26, which may be extensible or non-extensible. The fibrous structure of the present invention can be combined with an additional fibrous structure equal to or different from the fibrous structure of the present invention. The cushions present in the fibrous structure of the present invention can protrude at least in the additional fibrous structure. further, the cushions present in the fibrous structure of the present invention can protrude through the additional fibrous structure as a result of the breakage of the additional fibrous structure at the point of the padding. When combined with one or more additional fibrous structures, same or different from the fibrous structures of the present invention to form a multi-sheet sanitary paper product, the cushions can be oriented inward so that the cushions do not form part of a surface outside of the sanitary paper product or outwardly so that the quilts do form part of an exterior surface of the sanitary paper product. In one example, the cushions of two different fibrous structures of the present invention of a multi-sheet sanitary paper product can be contacted with each other by being oriented inwardly so that the cushions do not form part of an outer surface of the sanitary paper product. . However, the cushions of the fibrous structures can be separated from one another by one or more additional fibrous structures equal to or different from the fibrous structures of the present invention. Alternatively, the padding of two different fibrous structures of the present invention of a multi-sheet toilet paper product can be otherwise oriented, a fibrous structure having the padding oriented outwardly so that the padding forms part of an outer surface of the pad. sanitary paper product and a fibrous structure that has the oriented quilts inwardly so that the padding is not part of an exterior surface of the toilet paper product. In another example, the padding of two different fibrous structures of the present invention of a multi-sheet sanitary paper product can both be oriented outwardly so that the padding forms a part of the outer surfaces of the sanitary paper product. The additional fibrous structure can be combined with the fibrous structure of the present invention by any suitable means. The fibrous structure may be combined before or after the cushions are present in the fibrous structure of the present invention. The fibrous structure of the present invention and the additional fibrous structure can exhibit different stretch properties with maximum loading. For example, the fibrous structure of the present invention may exhibit a stretch with maximum load that is less than the maximum load stretch of the additional fibrous structure. In another example, a fibrous structure of the present invention or portions thereof may exhibit a pre-cushioned stretch with maximum load that is less than the stretch with maximum load of the additional frame or portions of the additional frame. The pre-cushioned stretch with maximum load of the fibrous structure of the present invention or portions thereof can be influenced, particularly just before and / or during the subjection to a quilting generating process, so that the stretch with maximum load of the structure The fibrous of the present invention or portions thereof is greater than (at the time of undergoing the quilting generating process) the stretch with maximum load of the additional fibrous structure, thus allowing quilts to be imparted to the fibrous structure of the present invention.

In other examples, the fibrous structure of the present invention or portions thereof may exhibit greater stretch with maximum loading than the additional fibrous structure or portions thereof. In one example, the fibrous structure and / or sanitary paper product of the present invention may comprise 100% by weight of the fibers of wood pulp fibers. In another example, the fibrous structure and / or sanitary paper product of the present invention may comprise 100% by weight of the fibers of a blend of wood pulp fibers and cut synthetic fibers. The fibrous structure of the present invention can be formed by any process known in the industry.

Process for generating quilts With reference to Figure 2, there is shown a non-limiting example of an apparatus and method for manufacturing a fibrous structure of the present invention. The apparatus 100 comprises a pair of intermeshing rolls 102 and 104, each of which rotates about an axis A; axes A are parallel in the same plane. The roller 102 comprises a plurality of ridges 106 and their corresponding grooves 108, which extend continuously around the entire circumference of the roller 102. The roller 104 is similar to the roller 102, but rather than having ridges that extend continuously around the entire circumference, the roller 104 comprises a plurality of rows of flanges extending in the direction of the circumference, which have been modified to become rows of teeth spaced in the direction of the circumference 1 10 extending in a space ratio of at least about one part of the roller 104. The individual rows of teeth 110 of the roller 104 are separated by the corresponding slots 1 12. During the In operation, the rollers 102 and 104 are engaged in such a manner that the ridges 106 of the roller 102 extend into the grooves 1 12 of the roller 104 and the teeth 1 10 of the roller 104 extend into the grooves 108 of the roller 102. The gearing is shown in greater detail in the cross-sectional representation of Figure 3, mentioned later. In Figure 2, the apparatus 100 having a patterned roller, for example, the roller 104, and a non-patterned splined roller 102 are shown. However, in certain examples it may be desirable to use two patterned rolls 104 having the same or different patterns, in the same or different corresponding regions of the respective rollers. This apparatus can produce fibrous structures with padding protruding from both sides of the fibrous structure. The process of the present invention is similar in many aspects to a process described in U.S. Pat. no. 5,518,801 entitled "Web Materials Exhibiting Elastic-Like Behavior" and which are mentioned in the subsequent patent literature as "SELF" frames, which means "Elastic type structural film". However, there are many differences between the apparatus of the present invention and the apparatus described in the '801 patent identified above. These differences are evidenced in the novel features of the plot of the present invention. As described below, the teeth 1 10 of the roller 104 have a specific geometry associated with the leading and trailing edges that allow teeth, for example, the teeth 1 10, to practically "pierce" through the fibrous precursor structure 28 to difference of, in essence, record the plot. The difference in the apparatus 100 of the present invention results in a fundamentally different fibrous structure. The fibrous precursor structure 28 is provided directly from a Weft manufacturing process or indirectly from a supply roll (not shown) and move in the machine direction to the grip point 1 16 of counter-rotating geared rollers 102 and 104. The fibrous precursor structure 28 can be any suitable fibrous structure exhibiting or is capable of exhibiting sufficient stretch with maximum load to allow the formation of cushions in the fibrous structure. The fibrous precursor structure 28 can be plasticized by any means known in the industry, such as subjecting the precursor web to a humid environment. As the fibrous precursor structure 28 passes through the grip point 116, the teeth 1 of the roller 104 enter the grooves 108 of the roller 102 and simultaneously force the fibers out of the plane of the fibrous precursor structure 28 to form the fibers. cushions 12 and discontinuities 22, not shown in Figure 2. In effect, teeth 1 10"push" or "pierce" through fibrous precursor structure 28. As teeth 110 push through the precursor structure fibrous 28, the portions of the fibers oriented predominantly in the transverse direction to the machine and along the teeth 110 are pushed by the teeth 1 10 out of the plane of the fibrous precursor structure 28 and are stretched, pulled, and / or plastically deformed on the Z axis, resulting in the formation of the cushion 12. The fibers that are predominantly oriented generally parallel in the machine direction of the precursor structure 28, as shown in Figure 2, are simply separated by the teeth 1 10 and remain practically in the non-cushioned region of the fibrous structure 10. The number, spacing, and size of the cushions can be varied by changing the number, separation, and size of the teeth 1 10 and making the corresponding dimensional changes, as necessary, to the roller 104 and / or the roller 102. This variation, together with the possible variations in the fibrous precursor structures 28 and the speeds of the line , allow to manufacture many structures fibrous varied for many purposes. For example, a fibrous structure made of a high basis weight fabric having woven filaments extendable in the machine direction and cross machine direction could be manufactured in a soft and porous floor covering, such as a useful cow rug to reduce problems of udder and nipples in the cows. A fibrous structure fabricated from a relatively low basis weight nonwoven fabric web of extendable spunbonded polymer fibers could be used as a terry cloth fabric for semi-durable or durable clothing. Figure 3 shows in the cross section a portion of engaged rollers 102 and 104 including ridges 106 and teeth 110. As shown, teeth 110 can have a tooth height TH (note that TH can also be applied to height of the flange 106; In a preferred example, the height of the tooth and the height of the flange are the same), and a tooth-to-tooth separation (or flange-to-flange separation) is referred to as the step P. As illustrated, the depth of the coupling E is a measure of the level of engagement of the rollers 102 and 104 and is measured from the tip of the flange 106 to the tip of the tooth 110. The depth of the coupling E, the height of the tooth TH, and the pitch P can be varied according to is desired, depending on the properties of the precursor web and the desired characteristics of the fibrous structure. In addition, the greater the density of the desired cushion regions (the cushioned regions per unit area of the fibrous structure), the smaller the pitch must be, and the smaller the tooth length TL and the tooth distance TD, as described then. Figure 4 shows an example of a roll 104 having a plurality of teeth 110 useful for manufacturing a fibrous structure of the present invention having a basis weight of between about 15 gsm and 100 gsm and / or about 25 gsm at about 90 gsm and / or from about 30 gsm to about 90 gsm. In one example, the resulting fibrous structure exhibits a basis weight of about 15 gsm to about 50 gsm and / or from about 15 gsm to about 40 gsm. An enlarged view of the teeth 110 shown in Figure 4 is shown in Figure 5. In this example of the roller 104 the teeth 110 have a uniform circumferential length dimension TL of approximately 1.25 mm, generally measured from the leading edge LE to the edge rear TE at the tip of the tooth 111, and are uniformly separated from one another circumferentially by a distance TD of about 1.5 mm. In order to manufacture a fibrous structure of a precursor web having a basis weight in the range of about 15 gsm to 100 gsm, the teeth 1 10 of the roller 104 can have a length TL ranging from about 0.5 mm to about 3 mm and a TD separation from approximately 0.5 mm to approximately 3 mm, a TH tooth height ranging from approximately 0.5 mm to approximately 10 mm, and a P pitch between approximately 1 mm (0.040 inches) and 2.54 mm (0.100 inches). The depth of the coupling E can be from about 0.5 mm to about 5 mm (up to a maximum that approaches the height of the TH tooth). Of course, the E, P, TH, TD and TL each can be varied independently of one another to achieve a desired size, spacing, and density of area of padding (number of padding per unit area of the fibrous structure). As shown in Figure 5, each tooth 110 has a tip 111, a leading edge LE and a trailing edge TE. The tip of the tooth 111 is elongated and has a generally longitudinal orientation corresponding to the longitudinal axes L of the cushioned regions. It is believed that to obtain the quilts of the fibrous structure that can be described as a towel cloth type, the LE and the TE must be almost orthogonal to the local peripheral surface 120 of the roller 104. Also, the transition from the tip 111 and the LE or the TE must be an acute angle, such as a right angle, having a radius of curvature sufficiently small that, in use, the teeth 110 penetrate through the precursor web in the LE and the TE. Without being limited by theory, it is believed that having transitions of the tip at relatively steep angles between the tip of the tooth 110 and the LE and the TE allows the teeth 110 to pierce through the precursor web "cleanly", i.e. locally and clearly, so that the resulting fibrous structure can be described as "cushioned" in the padded regions instead of, for example, "etched". When processed in this manner, no particular elasticity is imparted to the fibrous structure, beyond what the precursor web may originally possess. While the fibrous structure of the present invention is described in preferred examples as a single-ply fibrous structure made from a single-ply web, it need not necessarily be so. For example, a laminar or composite precursor web having two or more sheets may be used, provided that one of the sheets is a fibrous structure in accordance with the present invention. In general, the above description for the fibrous structure is maintained, recognizing that the cushioned and aligned fibers, for example, formed of a laminar precursor web would be composed of fibers of both (or all) sheets of the sheet. In such a fibrous structure, it is therefore important that all the fibers of all the sheets have sufficient diameter, elongation characteristics, and mobility of the fibers, so as not to break before their extension and padding. In this way, the fibers of all sheets of the laminate can provide fibers to the quilts. In a multi-leaf fibrous structure, the fibers of the different sheets can be mixed or intermixed in the padding and / or cushioned regions. The fibers may not protrude through, but may be combined with the fibers in an adjacent sheet.

Multi-leaf fibrous structures can have considerable advantages over fibrous structures of a single leaf. For example, a padding of a multi-leaf fibrous structure made of two or more precursor sheets is shown schematically in Figures 6-7. As shown in Figure 6, the multi-sheet fibrous structure 10 'comprises the sheet 28' and the sheet 28. "The sheet 28" is a precursor sheet in accordance with the present invention. The sheet 28"comprises a pad 12 comprising a non-extensible material The pad 12 projects through the precursor web 28 'As shown in Fig. 7, the multi-leaf fibrous structure 10' comprises three sheets, 28 ' 28", 28" 'One or both sheets 28' and 28"'may be a precursor sheet in accordance with the present invention. The sheets 28 'and 28"' contribute to the material, such as fibers, to form the padding 12, which comprises a non-extensible material, in a" nested "relationship that" locks "the two precursor sheets together, forming a fibrous structure laminate without the use or need of adhesives or thermal bonding or an ultrasonic or hydroentangling bond between the sheets, however, if an adhesive bond, chemical bonding, bonding with resin or powder, or thermal bonding or ultrasonic or hydroentangling bonding and combinations is desired These can be used selectively in certain regions or in all the precursor sheets, in addition, the multiple sheets can be joined during processing using any suitable bonding method by applying an adhesive or by thermal bonding without adding a In addition, the union can be achieved by physically submitting the two sheets to the process of generating quilts, so that the quilts of at least one sheet protrude through the other sheet. In one example, the quilt 12 retains the ratio of the laminar precursor web, as shown in Figure 7, where the top sheet (specifically the web 28 'in the Figure 7, remains practically intact. As shown, the pad 12 protrudes through the precursor web 28"and only into the precursor web 28 '(not through the precursor web 28') into a fibrous multi-web structure, for example 10 'at the Figures 6-7, each precursor sheet can have different properties For example, as shown in Figures 6-7, the multi-leaf fibrous structures 10 'may comprise two (or more) precursor fibrous structures (at least one of the fibrous precursor structures is a fibrous structure according to the present invention), for example, the first and second precursor frames 28 'and 28". In the examples of multi-leaf fibrous structures illustrated in Figures 6-7, the formation of the cushions 12 results in a discontinuity 22 on the non-cushioned surface 24 and may be an open hollow area 20. The fibrous structures of the present invention , in addition to being used as raster products, they can also be used for a wide variety of other applications. Non-limiting examples of these other applications include various filter sheets such as air filter, bag filter, water filter, vacuum filter, water sump filter, and bacterial filter protector; Sheets for various electrical appliances such as capacitor separator paper, and diskette packaging material; mats for the beach; various industrial sheets such as adherent adhesive tape base cloth, oil absorbing material, and paper felt; various cleaning cloths such as household cloths, medical services and treatment, printing roller cloths, cloth for cleaning copying machines, and cloths for optical systems; cloths for personal hygiene and cleaning such as baby cloths, feminine cloths, facial cloths, or body wipes, various medical and sanitary sheets, such as surgical clothing, cap, mask, canvas, towel, gauze, base cloth for poultice, diaper, diaper core, diaper collection layer, diaper lining, diaper cover, base fabric for plastering, wet towel, and tissue paper; various canvases for fabrics, such as padding cloth, pad, jumper liner, and disposable undergarment; various living material canvases such as base fabric for artificial leather and synthetic leather, table top, wallpaper, shoji-gami (paper for paper screens), curtain, calender, wrapping, and container for drying agent, shopping bag, suit lining, and pillow case; Various agricultural canvases, such as cow rugs, cooling and anti-sunlight shielding fabric, cladding curtain, canvas for full cover, canvas for shielding from light and to prevent the growth of grass, wrapping materials pesticides, jar liner paper for seed growth; various protective canvases such as smoke protection mask and dust protection mask, lab coat, and anti-dust cloth; various canvases for civil engineering construction, such as house wrappers, sump material, filtering media, separation material, base fabric for padding and carpet, siding, and roofing, interior wall material, soundproofing canvas, or reducer the vibration, and curing cloth; and various canvases for the interior of automobiles, such as floor mats, trunk mats, molded roofing material, headrest, and lining cloth, as well as a separating canvas in alkaline batteries. Another advantage of the process described for producing the fibrous structures of the present invention is that the fibrous structures can be manufactured in line with other equipment for the production of fibrous structures. Also, before or after the process of the present invention, other solid state formation processes can be applied. Non-limiting examples of solid state forming processes include printing, etching, laminating, slitting, punching, cutting, edge cutting, stacking, bending, mechanical softening, and the like. As can be understood from the previous description of the structures As fibrous structures and methods for manufacturing such a fibrous structure of the present invention, many different fibrous structures can be manufactured without departing from the scope of the present invention as claimed in the appended claims. For example, fibrous structures can be coated or treated with lotions, medicaments, cleansing fluids, antibacterial solutions, emulsions, fragrances, surfactants.

EXAMPLES Example 1 - A fibrous structure according to the present invention is manufactured in a wet-laid pilot paper machine. A homogeneous mixture of 70% NSK fibers, 20% eucalyptus fibers and 10% Co-PET / PET staple fibers (cover / core) is used to manufacture the fibrous structure. They are mixed in fiber pulp 25 # / tons of Kymene (permanent wet strength agent), 6 # / ton of carboxymethylcellulose and 4 # / ton of DTDMAMS. The fibrous structure is formed on a three-dimensional molded band dried by passing air. The paper machine operates at a 3% wet microcontraction (ie, a paper web that transfers the web to a cloth dried by passing air that travels faster than the cloth dried by air passing through) and a creping of 20% at the same time. output of a Yankee dryer. The fibrous structure is then passed through a padding generating operation wherein the cushion generating roll has a coupling depth of about 0.106 cm (0.042"). Two sheets of the fibrous structures comprising padding are combined using a process of The resulting fibrous structure is a non-extensible cushioned fibrous structure in which the cushion comprises a non-extensible material The stretching of the fibrous structure according to the short stretch tensile test method is 227% Example 2 - A structure The fibrous material according to the present invention is manufactured in a wet-laid pilot paper machine.

Homogeneous mixture of 75% NSK fibers and 25% SSK fibers to manufacture the fibrous structure. They are mixed in the fiber pulp 25 # / ton of Kymene (permanent wet strength agent), 6 # / ton of carboxymethylcellulose and 4 # / ton of DTDMAMS. The fibrous structure is formed on a three-dimensional molded band dried by passing air. The paper machine operates at a wet microcontraction of 3% and a creping of 20% at the outlet of a Yankee dryer. The fibrous structure is then passed through a quilting generating operation wherein the padding generating roll has a coupling depth of about 0.081"(0.032") .The resulting fibrous structure is a non-stretchable quilted fibrous structure where the quilting it comprises a non-extensible material The stretching of the fibrous structure according to the short stretch tensile test method is 230% Example 3 - A fibrous structure according to the present invention is manufactured in a pilot paper machine laying in wet A homogeneous mixture of 70% NSK fibers 30% SSK fibers is used to manufacture the fibrous structure Mixed in fiber pulp 25 # / ton Kymene (permanent wet strength agent), 6 # / ton carboxymethylcellulose and 4 # / ton of DTDMAMS The fibrous structure is formed on a three-dimensional molded band dried by passing air. wet microcontraction of 3% and 10% creping at the outlet of a Yankee dryer. The fibrous structure is then passed through a padding generating operation wherein the cushion generating roll has a coupling depth of about 0.132 cm (0.052") .The resulting fibrous structure is a non-extensible cushioned fibrous structure where the padding it comprises a non-extensible material The stretching of the fibrous structure according to the short stretch traction test method is 230%.

Comparative Example 4 - A multi-sheet toilet paper product comprising a cushion consisting of extensible material is formed by sandwiching between two fibrous structures of existing wood pulp a layer of bicomponent fibers (80% PET core / 20% CoPET coating) ) synthetic melt blown 12 g / m2. Prior to thermally bonding the multi-sheet sanitary paper product, the multi-sheet sanitary paper product is passed through a quilting generating operation wherein the quilting generating roll has a mating depth of approximately 0.152 cm (0.060"). The resultant multi-sheet sanitary paper product is a cushioned multi-ply toilet paper product wherein the cushions consist of extensible material The stretching of the multi-ply toilet paper product according to the tensile test method of short section is 1026% Comparative example 5 - A multi-leaf toilet paper product is formed by sandwiching between two fibrous structures of existing wood pulp a layer of synthetic bicomponent fibers (80% PET core / 20% CoPET coating) blow melt of 6 g / m2 Before thermally bonding the multiple sanitary paper product In the case of sheets, the multi-sheet sanitary paper product is then passed through a quilting generating operation wherein the quilting generating roll has a coupling depth of approximately 0.152 cm (0.060"). The resultant multi-sheet sanitary paper product is a multi-sheet cushioned tissue paper product wherein the cushions consist of extensible material. The stretching of the multi-sheet sanitary paper product according to the short stretch tensile test method is 828%.

Test methods Unless otherwise indicated, all tests described herein including those described in the Definitions section and the following test methods are performed on samples that have been conditioned in an enclosure conditioned at a temperature of 73 ° F ± 4 ° F (approximately 23 ° C ± 2.2 ° C) and a relative humidity of 50% ± 10% for 2 hours before the test. further, all tests are carried out in said conditioned room. The tested samples should be subjected to 73 ° F ± 4 ° F (approximately 23 ° C ± 2.2 ° C) and a relative humidity of 50% ± 10% for 24 hours before the test.

Short stretch traction test method Suitable equipment for this test may include a Thwing Albert EJA tensile test device or an Instron. The tensile test apparatus must have modified jaws, with rubber parts added to both jaws at the edge closest to the corresponding jaw. Second, the jaw must be level with one another and any equipment for loading the jaws should not interact with the opposite jaw. The zero height between the jaws is set by joining the jaws together to measure the first substantial force, and the sights are set to zero. The reference length of the sample is fixed by increasing the space between the jaws to the desired distance (0.100 cm). Again, the crosshairs are set to zero. In this test, the modified jaws are used to pull the one-inch strips of the fibrous structures and / or the sanitary paper products comprising one or more separate padding at a rate of 2.54 cm / min. The load is captured as the jaws separate until reaching the maximum load and then continues until only 2% of the maximum load remains. The jaws then went returned to their initial position or the reference length described above. The stress at break was determined at 2% of the maximum load after having achieved the maximum load. Four repetitions were performed on separate sample pieces and the averof the four results was obtained. Samples of 1-inch strips were tested in the machine direction. The samples were tested after the cushioning process. If a sample exhibits a stretch according to this test method of less than 800% and / or less than 700% and / or less than 600% and / or less than 500% and / or less than 400% and / or less from 300% to 0%, then the sample is considered to contain a padding comprising a non-extensible material, such as non-stretchable fibers.

Effective caliber test The effective caliber of a fibrous structure and / or roll paper product is determined by the following equation: EC = (RD2-CD2) / (0.00127 x SC x SL) characterized in that EC is the effective caliber in mils of a single canvas in a wound roll of the fibrous structure and / or the sanitary paper product; RD is the diameter of the roll in inches; CD is the diameter of the core in inches; SC is the count of the canvases; and SL is the length of the canvas in inches.

Horizontal Full Sheet (HFS) Absorbance Test: The Horizontal Full Leaf Test Method (HFS) English) determines the amount of distilled water absorbed and retained by the paper of the present invention. This method is performed by first weighing a sample of the paper to be tested (weight referred to herein as "Dry paper weight"), then moistening the paper completely, then letting it drain horizontally and finally reweighing it again ( weight referred to herein as "Wet paper weight"). The absorption capacity of the paper is then calculated as the amount of water retained in units of grams of water absorbed by the paper. When evaluating different paper samples, the same paper size is used for all samples to be tested. The apparatus for determining the HFS capacity of paper comprises the following: An electronic balance with a sensitivity of at least ± 0.01 grams and a minimum capacity of 1200 grams. The balance should be placed on a table for scales and a slab to minimize the effects of floor / heavy vibration of the work bench cover. The balance must also have a special plate so that the size of the paper to be tested can be handled (ie, a paper sample of approximately 11 inches (27.9 cm) by 1 1 inches (27.9 cm)). The balance plate can be manufactured from a variety of materials. Plexiglass is a commonly used material. A sample support frame and a sample holder cover are also needed. Both the frame and the cover comprise a light metal frame, strung with a monof lamento of 0.012 inches (0.305 cm) in diameter so that it forms a grid of 0.5 square inches (1.27 cm2). The size of the frame and the support cover is such that the sample size can be placed appropriately between the two. The HFS test is performed in an environment that is maintained at 23 ± 1 ° C and 50 ± 2% relative humidity. A tub or water tank is filled with distilled water at 23 ± 1 ° C to a depth of 3 inches (7.6 cm). The paper to be tested is carefully weighed on the balance with an accuracy of ± 0.01 grams. The dry weight of the sample is reported with an accuracy of ± 0.01 grams. The empty sample support frame is placed on the balance with the special weighing plate described above. Then the scale is reset to zero (tare). The sample is carefully placed in the sample holder frame. The cover of the support frame is placed on the support frame. The sample (now interspersed between the frame and the cover) is submerged in the water tank. After the sample has been submerged for 60 seconds, the sample support frame rises gently out of the reservoir. Then, the sample, the support frame and the cover are allowed to drain horizontally for 120 ± 5 seconds, taking care not to shake or shake the sample excessively. Then, the cover of the frame is carefully removed and the wet sample and the support frame are weighed on the previously tared scale. The weight is recorded with an accuracy of ± 0.01 grams. This is the wet weight of the sample. The absorption capacity in grams per paper sample of a sample is defined as (Wet weight of the paper - Dry weight of the paper). The dimensions and values set forth herein are not to be construed as strictly limited to the exact numerical values mentioned. Instead, unless otherwise specified, each of these dimensions will mean both the aforementioned value and a functionally equivalent range that encompasses that value. For example, a dimension expressed as "40 mm" will be understood as "approximately 40 mm".

All documents cited in the Detailed Description of the invention are incorporated, in their relevant part, as reference herein; the mention of any document should not be construed as an admission that it corresponds to a prior industry with respect to the present invention. To the extent that any meaning or definition of a term in this written document contradicts any meaning or definition of the term in a document incorporated by reference, the meaning or definition assigned to the term in this written document shall govern. While particular embodiments of the present invention have been illustrated and described, it will be apparent to those with experience 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 (10)

1. A pattern characterized in that it comprises a padding comprising a non-extensible material.

2. The web according to claim 1, further characterized in that the web exhibits a stretch of less than 800% as determined by the short-span tensile test method.

3. The screen according to any of the preceding claims, further characterized in that the screen further comprises a surface comprising a non-extensible material.

4. The web according to any of the preceding claims, further characterized in that the non-extensible material comprises non-extensible fibers. The weave according to any of the preceding claims, further characterized in that the weft comprises a surface comprising undulations, preferably, wherein the padding is oriented perpendicular to the undulations. 6. The frame according to any of the preceding claims, further characterized in that the frame comprises a plurality of padding. The weave according to any of the preceding claims, further characterized in that the non-stretchable fibers exhibit lengths of 6.0 mm or less. 8. The web according to any of the preceding claims, further characterized in that the non-extensible fibers comprise fibers of natural origin. The web according to any of the preceding claims, further characterized in that the fibers of natural origin are selected from the group consisting of: animal fibers, mineral fibers, plant fibers, protein fibers and mixtures thereof, preferably wherein the fibers Animal fibers are selected from the group consisting of: wool fibers, silk fibers and mixtures thereof, preferably wherein the plant fibers are derived from a plant selected from the group consisting of: wood, cotton, cotton linters, linen, sisal, abaca, hemp, hesperaloe, jute, bamboo, bagasse, kudzu, corn, sorghum, squash, maguey, scourer and mixtures of these. The web according to any of the preceding claims, further characterized in that the web comprises a surface comprising extensible fibers, preferably wherein the extensible fibers comprise thermoplastic polymers, more preferably wherein the thermoplastic polymers are selected from the group consisting of : polypropylene, polypropylene copolymers, polyethylene, polyethylene copolymers, polyethylene terephthalate, polyethylene terephthalate copolymers and mixtures thereof. 1. A single or multiple sheet sanitary paper product comprising a web according to any of the preceding claims, preferably characterized in that the padding is oriented inwardly and / or outwardly in the multiple sanitary paper product. leaves. 12. A process for manufacturing a frame according to any of claims 1 to 10, characterized the process because it comprises the steps of: a. forming a web comprising a non-extensible material, preferably further characterized in that the non-extensible material comprises non-extensible fibers; b. impart extensibility to the plot; and c. subjecting the extensible weave to a quilting generating operation so that a weft comprising a quilting comprising the non-extensible material is formed.