MX2008007679A - Improved cellulose articles containing an additive composition - Google Patents

Abstract

In one embodiment, the present invention provides a method of forming a cellulose article having a specific volume of less than 3 cc/gm. The method includes the step of incorporating cellulose fibers with a compound, wherein the compound includes an aqueous dispersion. The aqueous dispersion may have at least one polymer selected from the group consisting of an ethylene-based thermoplastic polymer, a propylene-based thermoplastic polymer, and mixtures thereof;at least one polymeric stabilizing agent;and water. In certain embodiments, a combined amount of the at least one polymer and the at least one stabilizing agent comprises about 25 to about 74 volume percent of the aqueous dispersion.

Description

IMPROVED CELLULOSE ARTICLES THAT CONTAIN AN ADDITIVE COMPOSITION BACKGROUND OF THE INVENTION Field of the Invention The invention relates generally to articles based on cellulose and to a method for improving the properties of cellulose-based articles, including water resistance, resistance to oils and fats, the physical resistance in wet and dry, or the softness of the articles. Reference to Related Requests This request is a non-provisional request that claims the priority of provisional application Serial No. 60 / 750,466, filed on December 15, 2005, entitled "IMPROVED CELLULOSE ARTICLES CONTAINING AN ADDITIVE COMPOSITION" ("Improved Articles of cellulose containing an additive composition ", the teachings of which are hereby incorporated by reference herein, as if reproduced in its entirety in the following.The Prior Art Cellulose based compositions are used in a wide variety of products, and They can include general categories, such as paper and cardboard.The specific end-use products vary from sanitary napkins, cardboard boxes, paper (for writing, copying, photographic paper, etc.), wet wipes, paper plates, containers for food and many others. Many of these products also include folds or creases, such as compartments on a papal plate or in a food container, which creates additional manufacturing problems. Cellulose-based compositions are often modified for end-use applications. Various chemical substances added to these cellulose-based compositions can improve the desired properties, such as wet and dry physical strength, softness, water resistance, resistance to oils and fats and others. However, unfortunately, when measures are taken to increase one of the properties of the product, other characteristics of the product are often adversely affected. As an example of the modification of a cellulose-based composition, in the area of resistance to oils and fats, there are many packages, such as the boxes for piza and the wrappers for hamburgers, which must be treated to prevent unpleasant staining of the packaging by the oil and grease from the food or other items contained in the package. Current treatments, used for resistance to oils and fats, include treatment with fluorocarbons or paper coating, by extrusion, with a polymer layer, such as LDPE. Frequently the treatment with fluorocarbon causes problems with the perception by the consumer; and often the coating with LDPE requires a high thickness of coating, which increases costs. As a gold example, water resistance / barrier is another necessary attribute in many paper and cardboard applications, including corrugated boxes for cold storage of fruits and vegetables, as well as for packing fish and meat. Wax coatings are often used to provide the necessary water resistance. These coatings with wax are typically expensive, due to the high coating thickness required. Wax coatings also cause problems, since waxed boxes can not be recycled in the same way as non-waxed boxes. As a third example of increasing the yield of cellulose-based compositions, photo-quality paper is often used in a multilayer design, which consists of a paper substrate with a water-impermeable polymer layer. This is often coated additionally with an upper coating of a water absorbing layer and, optionally, an upper ink receiving layer (which frequently contains cationic functionality to bind with the pigments). The above examples illustrate the coating of a cellulose-based composition, with a polymer or other chemical substance, after forming paper or paperboard. A polymeric coating can be formed by processes such as spraying a polymer dispersion on the paper, or by co-extruding a polymer layer, for example. Dispersions or emulsions have been added also to an aqueous suspension containing cellulose fibers, optional fillers and various additives. The aqueous suspension is fed to an upper case which ejects the suspension onto a wire mesh in which the continuous wet paper web is formed. The drained water from the wire mesh, called white water, is usually partially recirculated in the papermaking process. Several references describe the use of various thermoplastic dispersions, such as coating on paper and other substrates, to impart specific properties which include thermal seal capability, barrier to water and / or oils, including WO 2005/021 638, DE 01 09992 and EP 0972794. WO 99/24492 describes the use of certain polyolefin dispersions, specifically ethylene-styrene interpolymers, for use as a barrier coating on paper. WO 98/03731 describes the use of a dispersion of ethylene-acrylic acid copolymer (EAA), added at the wet end of the papermaking process, to impart sizing (water resistance) to the finished "cellulosic article". U.S. Patent No. 4,775.71 3 discloses aqueous dispersions containing various thermoplastics and a thermoplastic polymer containing a carboxylic acid salt group. Another important attribute for efficient operations within a paper mill is the possibility of recovering or recycling materials used in the process, such as the recirculation of white water and the reuse of paper spoiled in edge trimmings and paper formed during start-up and shutdown (transforming the paper into a pulp suspension). The coating of the cellulosic fibers, after the continuous paper web is formed, or the cardboard, can have negative effects on the reuse of the spoiled paper. Dispersions added to the process, before forming the paper, can adversely affect the recirculation of white water. Accordingly, there is a need to determine dispersion compositions, useful as a coating or additive for paper, to increase specific functional attributes. There is also a need to determine a narrower range of dispersion compositions, which can increase the specific functional attributes, without, at the same time, affecting the other attributes, such as improving physical strength while maintaining softness, for example. Additionally, there is a need to determine methods and compositions that allow recycling and recovery of process materials to improve manufacturing efficiency and the cost of the papermaking process. BRIEF DESCRIPTION OF THE INVENTION In one aspect, the embodiments of the invention relate to cellulose-based articles having a specific volume of less than 3 cc / g, for example, paper and cardboard structures incorporating a compound that comprises an aqueous dispersion of polyolefin which results in articles having properties improved. In various embodiments, the articles may have improved oil resistance, fats, improved water resistance, controlled friction coefficients, thermal etching capability, thermal formability, improved physical strength in wet and dry, or improved softness , among other. In one embodiment, the present invention provides a method for forming a cellulose article having a specific volume of less than 3 cc / g, including: incorporating cellulose fibers with a compound; wherein the compound includes an aqueous dispersion having at least one polymer selected from the group consisting of a thermoplastic polymer based on ethylene, a thermoplastic polymer based on propylene, and mixtures thereof; at least one polymeric stabilizing agent; Water; and where a combined amount of the at least one polymer and! the at least one stabilizing agent comprises from about 25 to about 74 volume percent of the aqueous dispersion.

In another embodiment, the present invention provides a cellulose based article, having a specific volume of less than 3 cc / g, which includes: a cellulose based composition and an applied compound. The applied compound, at the time of application, may include an aqueous dispersion having: at least one polymer selected from the group consisting of a thermoplastic polymer based on ethylene; A propylene-based thermoplastic polymer, and mixtures thereof; at least one polymeric stabilizing agent, wherein the polymeric stabilizing agent comprises an ethylene-acid copolymer, partially or totally neutralized; and water . The article may have a resistance value to oils and fats of at least 9, when measured using the Kit test at an exposure time of 15 seconds. In another embodiment, the present invention provides a cellulose-based article having a specific volume of less than 3 cc / g, which includes: a cellulose-based composition and an applied compound. The applied compound, at the time of application, may include an aqueous dispersion having at least one polymer selected from the group consisting of a thermoplastic polymer based on ethylene, a thermoplastic polymer based on propylene, and mixtures thereof. from them; at least one polymeric stabilizing agent; and water . The stabilizing agent may include an ethylene-acid copolymer, partially or totally neutralized. The cell-based article can have a water resistance value of less than about 10 g / m2 / 1 20 seconds, when measured by the Cobb test. In other embodiments, the present invention provides a cellulose-based article, having a specific volume of less than 3 cc / g, formed by a process that includes the steps of: providing pulp fibers to the process, and incorporating the fibers with a compound The compound may include an aqueous dispersion having: at least one polymer selected from the group consisting of a thermoplastic polymer based on ethylene; a propylene-based thermoplastic polymer, and mixtures thereof; at least a polymeric stabilizing agent; and water . The process may include: forming an aqueous suspension of the pulp fibers; form the aqueous suspension to continuous paper tape, and dry the continuous paper tape. In other embodiments, the present invention provides a method for forming a cellulose article having a specific volume of less than 3 cc / g, which includes the steps of: applying a compound to a cell-based composition; forming an aqueous suspension of the cellulose-based composition; forming the aqueous suspension to a continuous ribbon of paper; Dry the continuous paper tape. The compound may include an aqueous dispersion having: at least one polymer selected from the group consisting of a thermoplastic polymer based on ethylene; a thermoplastic polymer based on propylene, and mixtures thereof; at least one polymeric stabilizing agent, and water. Other aspects and advantages of the invention will be apparent from the following description and from the claims that come at the end. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram of a process useful for dispersing certain embodiments of the present invention.

Figure 2 is a graph showing the moisture vapor transmission rates of the cellulose-based articles formed using the embodiments of the present invention which are described in the examples that follow. Figure 3 is a graph showing the water resistance of the cellulose-based articles, formed using the embodiments of the present invention that are described in the examples that follow. Figure 4 is a view in section, through the atomic force microscope, in the extraction mode, from a first film made at room temperature. Figure 5 is seen in section, through the atomic force microscope, in the extraction mode, of a second film made at elevated temperatures. DETAILED DESCRIPTION In one aspect, the embodiments of the invention relate to cellulose-based articles, for example, paper and cardboard structures that incorporate a compound comprising an aqueous polyolefin dispersion, which results in articles having improved properties. . In various embodiments, the articles may have improved resistance to oils and greases, improved water resistance, controlled coefficients of friction, possibility of thermal embossing, possibility of thermal formation, improved physical resistance in wet and dry, or a softness improved, among others. The incorporation of the compound comprising an aqueous polyolefin dispersion with, in or on the cellulose-based articles, for example, may result in oil and gaseous resistant paper and paperboard, for use in such applications as pizza boxes, hamburger wrappers and corrugated boxes for products. In other modalities, the incorporation it can result in an improved photographic quality ink jet paper. As used herein, "copolymer" refers to a polymer formed of two or more comonomers. The cellulose-based articles of the present invention can be formed by incorporating a cellulose-based composition, with a compound comprising an aqueous dispersion; wherein the dispersion comprises a base polymer and a stabilizing agent. The following description will first detail the compound and the aqueous dispersion. Then the cellulose-based composition will be discussed, and a description will then be given of the ways in which the dispersion can be incorporated on or into the cellulose-based composition. Dispersion or dispersion compounds In certain embodiments, a charge can be added to the dispersion to form a dispersion compound. For simplicity and clarity, dispersions and dispersion compounds with the term "dispersions" will be generally referred to herein. The base polymers The embodiments of the present invention employ polymers based on ethylene, propylene-based polymers and propylene-ethylene copolymers, as a component of a composition. In selected embodiments, a component is formed from ethylene / alpha-olefin copolymers, or copolymers of propylene / alpha-olefin. In particular, in the preferred embodiments, the base polymer comprises one or more non-polar polyolefins. In other selected embodiments, olefin block copolymers, for example, a multiblock copolymer of ethylene, as described in International Publication No. WO 2005/090427, and in U.S. Patent Application No. 1 1 / 376,835, as the base polymer. Said olefin block copolymer can be an ethylene / alpha-olefin interpolymer: (a) having an Mw / M n of about 1.7 to about 3.5, at least a melting point, Tm, in degrees Celsius, and a density, d, in grams / cubic centimeter; where the numerical values of Tm and d correspond to the relation: Tm > -2002.9 + 4538.5 (d) - 2422.2 (d) 2; or (b) having an Mw / Mn of about 1.7 to about 3.5, and which is characterized by a heat of fusion ?? in J / g, and a delta amount, ??, in Celsius grads, defined as the temperature difference between the highest DSC peak and the highest CRYSTAF peak; where the numerical values of ?? Y ?? have the following relationships: ?? > -0.1299 (??) + 62.81 for ?? greater than zero and up to 1 30 J / g; ?? > 48 ° C for ?? greater than 1 30 J / g; where the CRYSTAF peak is determined using at least 5 percent of the cumulative polymer, and if less than 5 percent of the polymer having an identifiable CRYSTAF peak is used, then the CRYSTAF temperature is 30 ° C; or (c) characterized by an elastic recovery, Re, in percent, at 300 percent stress and 1 cycle, measured with a film molded by compression of the ethylene / alpha-olefin interpoiomer, and having a density d, in grams / cubic centimeter, where the numerical values of Re and d satisfy the following relationship, when the ethylene / alpha-olefin interpolymer is substantially free of an interlaced phase: Re > 1481-1629 (d); or (d) that has a molecular fraction that elutes between 40 ° C and 130 ° C when fractionated using TREF, characterized in that the fraction has a molar comonomer content of at least 5 percent greater than the fraction of random, comparable ethylene interpolymer eluting between the same temperatures; where the comparable random ethylene interpolymer has the same comonomer (s) and has a melt index, a density and a molar content of comonomer (based on the total polymer) within 10 percent of the interpolymer ethylene / alpha-olefin; or (e) has a storage module at 25 ° C, G '(25 ° C) and a storage module at 100 ° C, G' (100 ° C), in which the proportion of G '(25 ° C) C). a G '(100 ° C) is on the scale from about 1: 1 to about 9: 1. ? In addition, the ethylene / alpha-olefin interpolymer can also: I (a) have a molecular fraction that elutes between 40 ° C and 130 ° C when fractionated using TREF, characterized in that the fraction has a block index of at least 0.5 and up to about 1, and a molecular weight distribution, Mw / Mn, of more than about 1.3; or (b) having an average block index greater than zero and up to about 1.0, and a molecular weight distribution, Mw / Mn, greater than about 1.3. In specific embodiments, polyolefins, such as polypropylene, polyethylene and their copolymers, and mixtures thereof, as well as ethylene-propylene-diene terpolymers can be used. In some embodiments, preferred olefinic polymers include the homogeneous polymers, described in U.S. Patent No. 3,645,992, issued to Elston; high density polyethylene (HPE), as described in US Pat. No. 4,076,698, issued to Andres; linear low density polyethylene (LLDPE), branched heterogeneously; ultra low density linear polyethylene (U LDPE) heterogeneously branched; homogeneously branched substantially linear ethylene / alpha-olefin copolymers, which can be prepared, for example, by a process described in U.S. Patent Nos. 5,272, 236 and 5,278, 272, the descriptions of which are incorporated herein by way of this reference; and polymers and copolymers of ethylene, polymerized at high pressure, with free radical, such as low density polyethylene (LDPE). Also suitable in some modalities are the polymer compositions described in U.S. Patent Nos. 6,566,446, 6,538,070, 6,448,341, 6,31 6,549, 6,11 1, 023, 5,869,575, 5,844,045 or 5,677,383, each of which is incorporated herein in its entirety by means of this reference. Of course, mixtures of polymers can also be used. In some embodiments, the mixtures include two different Ziegler-Natta polymers. In other embodiments, the mixtures may include mixtures of a Ziegler-Natta polymer and a metallocene polymer. In still other embodiments, the polymer used herein is a mixture of two different metallocene polymers. In other embodiments, polymers produced from single-site catalysts can be used. In a further embodiment, block or multi-block copolymers can be used in the embodiments of the invention. Said polymers include those described and claimed in WO 2005/090427 (which has the priority of the US application Serial No. 60/553, 906, filed on March 7, 2004). In some particular embodiments, the polymer is a copolymer or an interpolymer based on propylene. In some embodiments, the copolymer or propylene / ethylene interpolymer is characterized as having substantially isotactic propylene sequences. The term "substantially isotactic propylene sequences" and similar terms mean that the sequences have an isotactic triad measured by 3 C NMR of more than about 0.85, preferably more than about 0. 90; more preferable, more than about 0.92 and still more preferable, more than about 0.93. Isotactic triads are well known in the art and are described, for example, in U.S. Patent Nos. 5, 504, 1 72 and O 00/01 745, which refer to the isotactic sequence in terms of a triad unit in the molecular chain of the copolymer, determined by 13 C NMR spectra. In other particular embodiments, the base polymer may be formed of ethylene / vinyl acetate (EVA) base polymers. In other embodiments, the base polymer may be constituted by ethylene / methyl acrylate (EMA) based polymers. In other particular embodiments, the ethylene / alpha-olefin copolymer can be formed of copolymers or interpolymers of ethylene-butene, ethylene-hexene or ethylene-octene. In other particular embodiments, the propylene / alpha-olefin copolymer may be a copolymer or interpolymer of propylene-ethylene or a copolymer or interpolymer of propylene-ethylene-butene. In certain modalities, the base polymer can be an ethylene-octene copolymer or interpolymer, having a density between 0.863 and 0.91 1 g / cc and a melt index (1 90 ° C with 2.16 kg of weight) of 0.1 to 1 00 g / 1 0 min. In other embodiments, the ethylene-octene copolymers can have a density of between 0.863 and 0.902 g / cc, and a melt index (1 90 ° C with 2.1 6 kg of weight) of 0.8 to 35 g / 1 0 min. In certain modalities, the base polymer may be a polypropylene-ethylene copolymer or copolymer having an ethylene content of between 5 and 20 weight percent, and a melt flow rate at 230 ° C with 2.1 6 kg of weight) of 0.5 to 300 g / 1 0 min. In other embodiments, the propylene-ethylene interpolymer or copolymer may have an ethylene content of between 9 and 1 2 weight percent and a melt flow rate (230 ° C with 2.16 kg weight) of 1 to 100. g / 10 min. In other certain embodiments, the base polymer can be a low density polyethylene having a density between 0.91 1 and 0.925 g / cc, and a melt index (190 ° C with 2.16 kg of weight) of 0.1 to 1 00 g /10 minutes . In other embodiments, the base polymer may have a crystallinity of less than 50 percent. In preferred embodiments, the crystallinity of the base polymer may be from 5 to 35 percent. In the most preferred embodiments, the crystallinity may vary from 7 to 20 percent. In other certain embodiments, the base polymer may have a melting point of less than 10 1 ° C. In preferred embodiments, the melting point can be from 25 to 1 00 ° C. In the most preferred embodiments, the melting point can be between 40 and 85 ° C. In certain embodiments, the base polymer can have a weight average molecular weight of more than 20,000 g / mol. In preferred embodiments, the weight average molecular weight can be from 20,000 to 1 50,000 g / mol; in more preferred modalities, of 50,000 to 1,00,000 g / mol. The resin or thermoplastic resins may be contained within the aqueous dispersion in an amount of about 1 weight percent to about 96 weight percent. For example, the thermoplastic resin may be present in the aqueous dispersion in an amount from about 1.0 percent by weight to about 70 percent by weight, such as from about 20 percent by weight to about 50 percent by weight. Those with ordinary experience in the field will recognize that the above list is a non-exhaustive list of suitable polymers. It will be appreciated that the scope of the present invention is restricted only by the claims. The stabilizing agent The embodiments of the present invention use a stabilizing agent to promote the formation of a stable dispersion or emulsion. In the selected embodiments, the stabilizing agent can be a surfactant, a polymer (different from the base polymer that was detailed above) or mixtures thereof. In certain embodiments, the polymer can be a polar polymer, having a polar group either as a comonomer or as a grafted monomer. In preferred embodiments, the stabilizing agent comprises one or more polar polyolefins, having a polar group as a comonomer or as a grafted monomer. Typical polymers include: ethylene-acrylic acid copolymers (EAA) and ethylene-methacrylic acid copolymers, such as those obtainable under the trademarks PRIMACOR ™ (trademark of The Dow Chemical Company), NUCREL ™ (registered trademark of EI DuPont de Nemours) and ESCOR ™ (registered trademark) from ExxonMobil) and described in U.S. Patent Nos. 4,599,392, 4,988,781 and 5,938,437, each of which is incorporated herein in its entirety, by way of this reference. Other polymers include: ethylene-ethyl acrylate copolymer (EEA), ethylene-methyl methacrylate (EMMA) and ethylene-butyl acrylate (EBA). Other ethylene-carboxylic acid copolymers can also be used. Those of ordinary skill in the art will recognize that numerous other useful polymers can also be used. Other surfactants that may be used include long chain fatty acids, or fatty acid salts having 12 to 60 carbon atoms. In other embodiments, the long chain fatty acid or the fatty acid salt may have from 12 to 40 carbon atoms. If the polar group of the polymer is acidic or basic in nature, the stabilizing polymer can be partially or completely neutralized with a neutralizing agent to form the corresponding salt j. In certain embodiments, the neutralization of the stabilizing agent, such as a long chain fatty acid or EAA, may be from 25 to 200 percent, on a molar basis; from 50 to 110 percent on a molar basis, in other modalities. By For example, for the EAA, the neutralizing agent is a base, such as ammonium hydroxide or potassium hydroxide, for example. Other neutralizing agents may include lithium hydroxide or sodium hydroxide, for example. In another alternative, the neutralizing agent may be, for example, any amine, such as monoethanolamine or 2-amino-2-methyl-1-propanol (AM P). Those of ordinary skill in the art will appreciate that the selection of an appropriate neutralizing agent depends on the specific composition formulated, and that said selection is within the knowledge of those of ordinary skill in the art. Other additional surfactants, which may be useful in the practice of the present invention, include cationic surfactants, anionic surfactants or nonionic surfactants. Examples of anionic surfactants include sulfonates, carboxylates and phosphates. Examples of cationic surfactants include quaternary amines. Examples of nonionic surfactants include block copolymers containing ethylene oxide and silicone surfactants. The surfactants useful in the practice of the present invention can be external surfactants or internal surfactants. The external surfactants are surfactants that are not chemically reacted in the polymer during the preparation of the dispersion. Examples of external surfactants, useful herein, include the salts of dodecyl- benzenesulfonic acid and the lau-rilsulfonic acid salt. The internal surfactants are surfactants which are not chemically reacted in the polymer during the preparation of the dispersion. An example of an internal surfactant, useful herein, includes 2,2-dimethylolpropionic acid and its salts. In particular embodiments, the dispersing agent or stabilizing agent may be used in an amount ranging from more than zero to about 60 weight percent, based on the amount of the base polymer (or the mixture of base polymers). ) used. For example, long chain fatty acids or their salts, of 0.5 to 10 percent by weight, based on the amount of the base polymer can be used. In other embodiments, copolymers of ethylene-acrylic acid or ethylene-methacrylic acid, in an amount of 0.5 to 60 weight percent, based on the polymer may be used. In still other embodiments, sulfonic acid salts may be used in an amount of 0.5 to 10 weight percent, based on the amount of the base polymer. The type and amount of stabilizing agent used may also affect the final properties of the cellulose-based article, formed by incorporating the dispersion. For example, articles that have improved resistance to oils and fats could incorporate a surfactant package having ethylene-acrylic acid copolymers or ethylene-methacrylic acid copolymers in an amount of about 10% to about 50 weight percent, based on the total amount of the base polymer. A similar surfactant package can be used when improved physical strength or smoothness is desired as the final property. In another example, articles having improved water or moisture resistance could incorporate a surfactant package that uses long chain fatty acids in an amount of 0.5 to 5 percent, or ethylene-acrylic acid copolymers in an amount from 10 to 50 percent, both by weight, based on the total amount of base polymer. In other embodiments, the minimum amount of surfactant or stabilizing agent should be at least 1 percent by weight, based on the total amount of base polymer. Loads The embodiments of the present invention employ a filler or filler as part of the composition. In the practice of the present invention, the amount of suitable filler in a polyolefin dispersion can be from about zero to about 600 parts of filler per hundred parts of polyolefin. In certain embodiments, the amount of charge present in the dispersion can be from about zero to about 200 parts of charge per hundred parts of a combined amount of the polyolefin and the polymeric stabilizing agent. The filler material may include conventional fillers, such as ground glass, calcium carbonate, aluminum trihydrate, talc, antimony trioxide, fly ash, clays (such as bentonite or kaolin clays), example), or other known loads. The dispersion formulations Therefore, in the preferred formulations, the dispersions according to the present invention may include a base polymer, which may comprise at least one non-polar polyolefin, a stabilizing agent, which may comprise at least a polar polyolefin and, optionally, a filler. With respect to the base polymer and stabilizing agent, in the preferred embodiments, the at least one non-polar polyolefin may comprise between about 30 percent and 99 percent (by weight) of the total amount of the base polymer and the agent stabilizer in the composition. It is more preferred that the at least one polyolefin not comprise between about 50 percent and about 80 percent. It is still more preferred that the polyolefin or the non-polar polyolefins constitute approximately 70 percent. With respect to filler, an amount greater than about zero is typically used up to about 1000 parts per hundred polymer (polymer means here the non-polyolefin polyolefin, combined with the stabilizing agent). In selected embodiments, between about 50 and 250 parts per hundred parts are used. In selected embodiments, between about 10 parts and 500 parts per hundred parts are used. In other additional embodiments, between about 20 and 400 parts per hundred parts are used. In other modalities it is used from about zero to about 200 parts per hundred parts. These solid materials are preferably dispersed in a liquid medium which, in the preferred embodiments, is water. In the preferred embodiments, sufficient neutralization agent is added to neutralize the resulting dispersion to obtain a pH scale of between about 4 and about 14. In the preferred embodiments, sufficient base is added to maintain a pH of between about 6 and about 1.; in other embodiments, the pH may be between about 8 and about 1 0.5. The water content of the dispersion is preferably controlled so that the content of the solids (the base polymer plus the stabilizing agent) is between about 1 percent and about 74 percent by volume. In another embodiment, the solids content is between about 25 percent and about 74 percent by volume. In particular embodiments, the solids scale may be between about 10 percent and about 70 percent by weight. In other particular embodiments, the scale of solids is between about 20 percent and about 60 percent by weight. In particularly preferred embodiments, the scale of solids is between about 30 percent and about 55 percent by weight. In some modalities, a fibrous structure with a The composite can have a combined amount of the at least one polymer and the polymeric stabilizing agent in the range of about 10 to about 150 parts per hundred parts by weight of the textile material. In other embodiments, a fibrous structure with a compound may have a combined amount of the filler, the at least one polymer and the polymeric stabilizing agent, in the range of about 10 to about 600 parts per hundred parts by weight of the material. textile; from about 10 to about 300 parts, in other embodiments. Dispersions formed according to embodiments of the present invention are characterized by having an average particle size of between about 0.1 and about 5.0 microns. In other embodiments, the dispersions have an average particle size of from about 0.5 μm to about 2.7 μm. In other modalities, they have from about 0.8 pm to about 1.2 pm. By "average particle size", in the present invention is meant the average particle size by volume. In order to measure the particle size, for example, laser diffraction techniques can be employed. A particle size, in this description, refers to the diameter of the polymer that is in the dispersion. For polymer particles that are not spherical, the diameter of the particle is the average of the major and minor axes of the particle. The particle sizes can be measured in a Beckman-Cou lter laser particle diffraction analyzer LS230, or in another suitable device. For example, a formulation of the present invention may include surfactants, foaming agents, dispersants, thickeners, fire retardants, pigments, antistatic agents, reinforcing fibers, antifoaming agent, anti-blocking agent, wax dispersing agents. , antioxidants, a neutralizing agent, a rheology modifier, preservatives, biocides, acid scavengers, a wetting agent and the like. Although they are optional for the purposes of the present invention, other components can be highly advantageous for the stability of the product during and after the manufacturing process. Additionally, the embodiments of the present invention optionally include a charge bulking agent. A charge wetting agent can generally help make the polyolefin filler and dispersion more compatible. Useful wetting agents include phosphate salts, such as sodium hexametaphosphate. A charge wetting agent may be included in a composition of the present invention, at a concentration of at least about 0.5 parts per 100 parts of filler, by weight. Moreover, the embodiments of the present invention may optionally include a thickener. The thickeners may be useful in the present invention to increase the viscosity of the low viscosity dispersions. The thickeners suitable for use in the practice of the present invention may be any of those known in the art, such as, for example, nonionic thickeners of the polyacrylate type, or those associated therewith, such as modified cellulose ethers. For example, suitable thickeners include ALCOGU M ™ VEP-I I (registered trademark of Aleo Chemical Corporation), RH EOVIS ™ and VISCALEX ™ (trademarks of Ciba Geigy), ÚCAR® Thickener 146 or ETHOCEL ™ or M ETHOCEL ™ (trademarks registered trademarks of The Dow Chemical Company) and PARAGU M ™ 241 (registered trademark of Para-Chem Southern, I nc.), or BERMACOL ™ (registered trademark of Akzo Nobel) or AQ UALON ™ (registered trademark of Hercules) or ACUSOL® ( trademark of Rohm and Haas). The thickeners can be used in any amount necessary to prepare a dispersion with the desired viscosity. The final viscosity of the dispersion, therefore, is controllable. The addition of the thickener to the dispersion including the amount of filler, can be carried out with conventional means to result in the viscosities that are needed. The viscosities of the dispersions thus formed can reach +3000 cP (spindle 4 of Brookfield, with 20 rpm), with moderate dosage of thickener (up to 4 percent, preferably less than 3 percent, with bases in 1 00 parts resin of the polymer dispersion). The initial polymer dispersion, as described, has an initial viscosity, before formulation with fillers and additives, of between 20 and 1000 cP (Brookfield viscosity, measured at room temperature with RV3 spindle at 50 rpm). It is even more preferred that the initial viscosity of the dispersion may be between about 100 and about 600 cP. In addition, the embodiments of the present invention are characterized by their stability when a charge is added to the polymer / stabilizing agent. In this context, stability refers to the viscosity stability of the resulting polyolefin aqueous dispersion. In order to test the stability, the viscosity is measured over a period of time. Preferably, the viscosity measured at 20 ° C must remain within ± 10 percent of the original viscosity for a period of 24 hours, when stored at room temperature. The aqueous dispersion of the present invention may contain particles having an average particle size of about 0.1 to about 5 microns. The coatings obtained from them exhibit excellent resistance to humidity, water repellency, resistance to oils and fats, thermal adhesion to paper and other natural and synthetic substrates, such as metal, wood, glass, synthetic fibers and films, and woven and non-woven fabrics. The aqueous dispersion of the present invention can be used for applications such as a binder of a coating or ink composition for a coated paper, cardboard, wallpaper or other cellulose based article. The aqueous dispersion can be applied by means of various techniques, for example, by spray coating, curtain coating, coating with a roller applicator or with an engraving applicator, brush coating or immersion. Preferably, the coating is dried by heating the coated substrate at 70-150 ° C for 1 to 300 seconds. Examples of aqueous dispersions that can be incorporated into the additive composition of the present disclosure are described, for example, in U.S. Patent Application Publication No. 2005/01 00754; in U.S. Patent Application Publication No. 2005/01 92365; in the publication of TCP No. WO 2005/021638, and in the publication of TCP No. WO 2005/021 622, all of which are incorporated herein by reference thereto. Additives Additives can be used with the base polymer, stabilizing agent or filler used in the dispersion, without departing from the scope of the present invention. For example, the additives may include a wetting agent, sctants, anti-static agents, antifoaming agents and anti-blocking agents, wax dispersion pigments, a neutralizing agent, a thickener, a compatibilizer, a brightener, a modifier the rheology, a biocide, a fungicide and other additives known to those having experience in the art. Formation of the dispersion The dispersions of the present invention can be formed by any number of methods recognized by those who have experience in the field. In the selected embodiments, the dispersions can be formed using techniques described, for example, in the dispersions that were formed according to the procedures that were described in WO 2005/021 638, which is hereby incorporated in its entirety by means of this reference.

In a specific embodiment, a base polymer, a stabilizing agent and a filler are melt kneaded in an extruder together with water and a neutralizing agent, such as ammonia, potassium hydroxide or a combination of both, to form a compound dispersion . Those of ordinary skill in the art will recognize that numerous other neutralizing agents can be used. In some modalities, the caga can be added after mixing the base polymer and the stabilizing agent. In some embodiments, the dispersion is first diluted to contain from about 1 to about 3 weight percent water and then, subsequently, further diluted to comprise more than about 25 weight percent water. Any melting kneader means known in the art can be used. In some embodiments, a mixer, a BAN BU RY® mixer, a single screw extruder or a multi-screw extruder are used. The process for producing the dispersions according to the present invention is not particularly limited. A preferred process, for example, is a process that comprises Amalgamate the components mentioned above in fusion, according to U.S. Patent No. 5,756,659 and U.S. Patent No. 6,455,636. Figure 1 schematically illustrates an extrusion apparatus that can be used in embodiments of the invention. An extender 1, in certain embodiments a twin screw extruder, is coupled to a back pressure regulator, a fusion pump or a gear pump 2. The modes also provide a base tank 3 and an initial water tank 4, each one of which includes a pump (not shown). The desired amounts of base and initial water are provided from the base tank 3 and from the initial water tank 4, respectively. Any suitable pump can be used; but in some embodiments a pump is used which provides a flow of approximately 150 cc / minute at a pressure of 240 bar, to provide the base and initial water to the extruder 20. In other embodiments, a liquid injection pump provides a flow from 300 cc / min to 200 bar, or 600 cc / min at 133 bar. In some embodiments, the base and initial water in a preheater are preheated. The resin is fed, in the form of pellets, powder or flakes, from the feeder 7 to an inlet 8 of the extruder 1, where the resin is melted or formed. In some embodiments, the dispersing agent is added to the resin through and along with the resin, and in other embodiments the dispersing agent is separately provided to the twin screw extruder 1. Then the resin fusion is supplied from the mixing and transportation zone, to an emulsification zone of the extruder, where the initial amount of water and the base are added from tanks 3 and 4, through the inlet 5. In some embodiments, additional dispersing agent can be added or exclusively to the water stream. In some embodiments, the emulsified mixture is further diluted with more water at the inlet 9 of the tank 6, in a zone of dilution and cooling of the extruder 1. Typically, the dispersion is diluted to at least 30 weight percent water in the cooling zone. In addition, the diluted mixture can be diluted any number of times, until the desired dilution level is obtained. In some embodiments water is not added in the twin screw extruder 1, but rather in a stream containing the resin melt, after the melt has left the extruder. In this way, the accumulation of vapor pressure in the extruder 20 is eliminated. In particular embodiments it may be convenient to use the dispersion in the foam form. When making foams, it is often preferred to foam the dispersion. The use of a gas as a foaming agent is preferred in the practice of this invention. Examples of suitable foaming agents include: gases and / or gas mixtures, such as air, carbon dioxide, nitrogen, argon, helium and the like. The use of air as a foaming agent is particularly preferred. The foaming agents are typically introduced by the mechanical introduction of a gas in a liquid to form a foam. This technique is known as mechanical foaming. When preparing a foamed dispersion, it is preferred to mix all the components and then mix the air or gas in the mixture, using equipment such as the OAKES, MO N DO or FI RESTO N E foamers. Useful surfactants to prepare a stable foam they are called foam stabilizers here. Foam stabilizers are useful in the practice of the present invention. Those with ordinary experience in this field will recognize that numerous foam stabilizers can be used. Foam stabilizers include, for example, sulfates, succinamates and sulfosuccinamates. Advantageously, the polyolefin dispersions formed in accordance with the embodiments described herein, provide the ability to incorporate the dispersion on or into the cellulose-based compositions, including paper and cardboard, among others, as described in more detail below. Whats Next. The cellulose-based compositions The embodiments described herein relate to cellulose-based compositions, which are generally referred to as "paper and / or cardboard products" (ie, other than paper towels), such as newspaper, uncoated milled wood, coated milled wood, coated free sheets, uncoated free sheets, packaging and industrial papers, lined cardboard, corrugated media, recycled cardboard, bleached cardboard, writing paper, paper for printing, photo quality paper, wallpaper, etc. Said compositions can generally be formed according to the present invention from at least one continuous paper tape. For example, in one embodiment, the paper product may contain a continuous single-ply paper web, formed from a mixture of fibers. In another embodiment, the paper product may contain a multilayer (i.e., laminated) paper web. Additionally, the paper product can also be a single-ply or multi-ply product (e.g., more than one continuous paper web), where one or more of the plies may contain a continuous paper web formed in accordance with the present invention. Normally, the basis weight of a paper product of the present invention is between about 10 and about 525 grams per square meter (g / m2). Usually, the specific volume of a paper product according to the embodiments of the present invention is between about 0.3 and about 2 grams per cubic centimeter (g / cc). Any of a variety of materials can be used to form the paper products of the present invention. For example, the material used to form the paper products may include fibers formed by a variety of pulping processes, such as kraft pulp, sulfite pulp, thermomechanical pulp, etc. Fibers for paper making, useful in the process of present invention, include any cellulosic fibers known to be useful for forming cellulosic base sheets. Suitable fibers include softwood and hardwood fibers, virgin, together with non-wood fibers, as well as secondary (ie, recycled) papermaking fibers and mixtures thereof, in all proportions. Synthetic non-cellulosic fibers in the aqueous suspension are also included. The fibers can be derived to make paper from wood using any known process of pulping, including kraft pulps and sulfite chemistry. Suitable fibers for forming continuous paper webs or sheets comprise any natural or synthetic cellulosic fibers including, but not limited to: fibers other than wood, such as cotton, abaca (Manila hemp), kenaf fibers , of sabai grass, of lino, of esparto, of straw, of jute heneq uén, of bagasse, fibers of fluff of vendetósigo and fibers of leaf of pineapple; and wood fibers, such as those obtained from deciduous and coniferous trees, including softwood fibers, such as northern and southern softwood kraft fibers; hardwood fibers, such as eucalyptus, maple, larch and poplar. Wood fibers can be prepared in high performance and low yielding forms, and can be pulped in any known method, including high yield kraft pulping, sulfite, and other methods of forming known pulp. You can also use fibers prepared from of pulp forming methods in organic solvent, including the fibers and methods described in U.S. Patent No. 4,793,898, issued December 27, 1988 to Laamanen and co-inventors; U.S. Patent No. 4,594, 1 30, issued June 1, 1986, to Chang and co-inventors, and U.S. Patent No. 3,585, 1 04. Useful fibers can also be produced by anthraqinone pulp formation, exemplified US Pat. No. 5,595,628, issued January 21, 1997, to Gordon and co-inventors. In one embodiment, a portion of the fibers, such as up to 50 percent or less of the dry weight, or from about 5 percent to about 30 percent dry weight, can be synthetic fibers, such as rayon, polyolefin fibers, polyester fibers, bicomponent sheath-core fibers, bicomponent fibers of multiple components, and the like. An exemplary polyethylene fiber is PU LPEX®, obtainable from Hercules, I nc. (Wilmington, DE, E. U. A.). Any known method of blanking can be used. Synthetic cellulose fiber types include rayon, in all its varieties, and other fibers derived from viscose or chemically modified cellulose. The natural cellulose fibers, treated chemically, can be used; for example, mercerized pulps, reinforced or chemically entangled fibers, or sulfonated fibers. In order to obtain good mechanical properties in the use of fibers for papermaking, it may be desirable that the fibers be relatively damage and unrefined to a large extent or only htly refined. Although recycled fibers can be used, virgin fibers are generally useful because of their mechanical properties and lack of contaminants. Mercerized fibers, regenerated cellulose fibers, cellulose produced by microbes, rayon and other cellulosic material or other cellulose derivatives can be used. Suitable fibers for papermaking also include recycled fibers, virgin fibers, or mixtures thereof. In certain embodiments, capable of high volume and good compression properties, the fibers may have a refinement of Canadian standard of at least 200; more specifically, at least 300; even more specifically, at least 400 and, more specifically, at least 500. In some other embodiments, portions of the fibers up to about 90 percent dry weight, can be synthetic fibers. Other papermaking fibers that may be used in the present disclosure include paper or recycled paper fibers, and high performance fibers. High performance pulp fibers are those papermaking fibers produced by pulping processes that provide a yield of approximately 65 percent or more; more specifically, about 75 percent or more; and still more specifically, around 75 percent to around 95 percent. The yield is the quantity of processed fibers, expressed as a percentage of the initial mass of fibers. wood Such pulp-forming processes include white chemi-thermomechanical pulp (BCTM P), chemithermomechanical pulp (CTM P), thermomechanical pressure / pressure pulp (PTM P), thermomechanical pulp (TM P), thermomechanical chemical pulp (TMCP), pulps High performance sulphite and high performance Kraft pulp, all of which leave the resulting fibers with high levels of lignin. High performance fibers are well known for their stiffness both in the dry state and in the wet state, with respect to typical fibers formed pulpically only. In some embodiments, the pulp fibers may include softwood fibers having an average fiber length of more than 1 mm, and in particular, of about 2 to 5 mm, based on a heavy average per length. Said softwood fibers may include, but are not limited to, soft northern wood, southern softwood, redwood, redwood, fir, pine (for example, southern pines), spruce (for example, black spruce), their combinations , and similar. Exemplary commercially available pulp fibers suitable for the present invention include those obtainable from Neenah Paper I nc. under the commercial designations "LONG LAC-1 9". In some embodiments, dural wood fibers, such as eucalyptus, maple, birch, poplar, and the like, may also be used. In certain cases, eucalyptus fibers may be particularly convenient to increase the smoothness of the continuous sheet. The Eucalyptus fibers can also increase the gloss, increase the opacity and change the pore structure of the paper, to increase the wicking capacity of the paper web. In addition, if desired, secondary fibers obtained from recycled materials, such as fiber pulp, can be used from sources such as, for example: newsprint, recovered cardboard and office waste. Additionally, other natural fibers may also be used in the present invention, such as abaca (Manila hemp), sabai grass, vendetósigo eraser, pineapple leaf and the like. In addition, in some cases, synthetic fibers can also be used. Some suitable synthetic fibers may include, but are not limited to: rayon fibers, ethylene / vinyl alcohol copolymer fibers, polyolefin fibers, polyesters, and the like. As indicated, the paper product of the present invention can be formed from one or more continuous sheets of paper. The continuous sheets of paper may be single-ply or multi-ply. For example, in one embodiment, the paper product contains a single-ply paper web layer, which is formed from a mixture of fibers. For example, in some cases, eucalyptus and softwood fibers can be mixed homogeneously to form a continuous sheet of single-ply paper. In another embodiment, the paper product may contain a continuous sheet of multilayer paper, which is formed from of a supply of stratified pulp, which has several main layers. For example, in one embodiment, the paper product contains three layers, in which one of the outer layers includes eucalyptus fibers, while the other two layers include kraft fibers of northern softwood. In another embodiment, an outer layer and an inner layer may contain eucalyptus fibers, while the remaining outer layer may contain kraft fibers of northern softwood. If desired; The three main layers can also include blends of various types of fibers. For example, in one embodiment, one of the outer layers may contain a mixture of eucalyptus fibers and kraft fibers of northern softwood. However, it should be understood that the multilayer paper web can include any number of layers that can be formed from various types of fibers. For example, in one embodiment, the multilayer paper web can be formed from a stratified pulp supply having only two main layers. In accordance with the present invention, various properties of a paper product can be optimized, as described above. For example, physical resistance (for example, wet traction, dry traction, tear, etc.), softness, lint level, dry skin level and the like are some examples of product properties. of paper that can be optimized according to the present invention. However, it must be understood that each of the mentioned properties above does not necessarily have to be optimized in each case. For example, in certain applications, it may be convenient to form a paper product having increased physical strength, without considering the softness. In this regard, in one embodiment of the present invention, at least a portion of the fibers of the paper product can be treated with hydrolytic enzymes to increase physical strength and reduce lint. In particular, the hydrolytic enzymes may i be randomly reacted with the cellulose chains on the surface of the paper-forming fibers, or close to it, to create individual aldehyde groups on the surface of the fiber, which are part of the fiber. These aldehyde groups become sites for entanglement with the hydroxyl groups extruded from other fibers, when the fibers are formed and dried to sheets, thereby increasing the physical strength of the sheet or sheet. Furthermore, by randomly cutting or hydrolyzing the fiber cellulose, predominantly at or near the surface of the fiber, the interior of the fiber cell wall is avoided or reduced to a minimum. Consequently, the paper product made from these fibers alone, or made from mixtures of these fibers with untreated pulp fibers, shows an increase in physical strength properties, such as dry traction, traction in humerus, tear, etc. Other examples of cellulose-based compositions, useful in the present invention, include those described in U.S. Patent Nos. 6,837, 970, 6,824,650, 6,863,940, and in U.S. Patent Applications No. US 2005/01 92402 and 2004/0149412; each of which is incorporated here by means of this reference. Continuous cellulosic sheets, prepared according to the present invention, can be used for a wide variety of applications, such as paper and cardboard products (ie, different from paper towels), newsprint, uncoated milled wood , Coated milled wood, coated free sheet, uncoated free sheet, packaging and industrial papers, card stock, corrugation media, recycled cardboard and bleached paperboard. Continuous sheets formed in accordance with the present invention can be used in diapers, sanitary napkins, mixed materials, molded paper products, paper cups, paper plates and the like. The materials prepared according to the present invention can also be used in various textile applications, in particular in continuous textile sheets comprising a mixture of cellulosic materials and fibers of wool, nylon, silk or other polyamide or protein-based fibers. Paper products can contain a variety of fiber types, both natural and synthetic. In one embodiment, paper products comprise hardwood and softwood fibers. The total proportion of wood pulp fibers to softwood pulp fibers, within the product, including the individual sheets or sheets that make up the product, can vary widely. The proportion of wood pulp fibers hard to softwood pulp fibers can vary from about 9: 1 to about 1: 9; more specifically, from about 9: 1 to about 1: 4; and very specifically, from about 9: 1 to about 1: 1. In one embodiment of the present invention, the hardwood pulp fibers and softwood pulp fibers can be bleached prior to forming the paper sheet, thereby producing a homogenous distribution of the hardwood pulp fibers. and softwood pulp fibers in the z-direction of the sheet. In another embodiment of the present invention, the fibers of hardwood pulp and softwood pulp fibers can be stratified, in order to give a heterogeneous distribution of the hardwood pulp fibers and the softwood pulp fibers in the z-direction of the sheet. In another embodiment, the fibers of wood pulp may be located in at least one of the outer layers of the paper product and / or the sheets or sheets, wherein at least one of the inner layers may consist of fibers. of soft wood pulp. In yet another embodiment, the paper product contains secondary or recycled fibers, which optionally contain virgin or synthetic fibers. Additionally, synthetic fibers can also be used in the present invention. The provision herein with respect to pulp fibers, should be understood to include synthetic fibers. Some suitable polymers that can be used to form the synthetic fibers, include, but are not limited to: polyolefins, such as polyethylene, polypropylene, polybutylene and the like; polyesters, such as polyethylene terephthalate, poly (glycolic acid) (PGA), poly (lactic acid) (PLA), poly (ß-mellic acid (PM LA), poly (s-caprolactone) (PCL), poly (p) -dioxanone) (PDS), poly (3-hydroxybutyrate) (PH B), and the like, and polyamides, such as nylon and the like; cellulose, synthetic or natural polymers, including, but not limited to: cellulose esters, ethers cellulosics, cellulose nitrates, cellulose acetates, cellulose acetate butyrates, regenerated celluloses, such as viscose, rayon and the like, cotton, linen, henequen and mixtures thereof, can be used in the present invention. or in all the layers and sheets that make up the paper or the paper product, the cellulose-based articles can be formed by a variety of processes known to those of ordinary skill in the art. have a section of formation, a pressing section, a drying section and, depending on the article formed, optionally a reel. Examples of the details of the process steps and the schematic illustrations can be found in Properties of Paper: An Introduction, Second Edition, W. Scott and J. Abbott, TAPPI Press 1 995. In a simplified description of the process, a diluted suspension of pulp fibers is typically supplied by means of a headbox and deposited by means of a gate in a uniform dispersion, on a forming fabric of a conventional machine to manufacture paper. The slurry of pulp fibers can be diluted to any consistency that is typically used in conventional papermaking processes. For example, the suspension may contain from about 0.01 to about 1.5 weight percent of pulp fibers suspended in water. The water is removed from the pulp fiber suspension to form a uniform layer of pulp fibers. Other papermaking processes, other papermaking processes, and the like can be used with the present invention. For example, the processes described in U.S. Patent No. 6,423,183 can be used. The pulp fibers can be any pulp with high average fiber length, pulp with low average fiber length, or mixtures thereof. The pulp with high average fiber length typically has an average fiber length of about 1.5 mm to about 6 mm. An exemplary wood pulp, with a high average fiber length, includes one that can be obtained from Neenah Papel I nc. under the trade name LO NGLAC 1 9. The pulp with low average fiber length can be, for example, certain virgin wood pulps and secondary (ie recycled) fiber pulp from sources such as, for example, newspaper, recovered cardboard and office waste. Pulps with low average fiber length typically have a average fiber length of less than about 1.2 mm, for example, from 0.7 mm to 1.2 mm. Mixtures of high average fiber length and low average fiber length pulps may contain a significant proportion of pulp of low average fiber length. For example, the blends may contain more than about 50 weight percent pulp of low average fiber length and less than about 50 weight percent pulp of high average fiber length. An exemplary mixture contains 75 weight percent pulp of low average fiber length, and about 25 percent pulp of high average fiber length. The pulp fibers used in the present invention may be unrefined or may be whipped into varying degrees of refinement. Small amounts of wet strength resins and / or resin binders can be added, to improve physical resistance and abrasion resistance. Useful binders and wet strength resins include, for example, KYMENE 557 H, obtainable from Hercules Chemical Company, and PAREZ 631, obtainable from American Cyanamid, I nc. Interlacing agents and / or moisturizing agents can also be added to the pulp mixture. Binding agents can be added to the pulp mixture to reduce the hydrogen bond size, if desired, a continuous sheet of very open or loose, non-woven pulp fiber. An unpairing agent of exemplary union is available from Quaker Chemical Company, Conshohocken, PA, E. U. A., under the trade designation Q UAKER 2008. The addition of certain undoing bonding agents in the amount, for example, of 1 to 4 weight percent of the mixed structure, appears to also influence the static and dynamic coefficients of friction, measured, and improve the abrasion resistance of the rich side in continuous filaments of the mixed fabric. It is believed that the joint undoctor acts as a lubricant or as a friction reducer. Incorporation of the dispersion When continuous sheets of paper are treated in accordance with the present disclosure, the additive composition containing the aqueous polymer dispersion can be applied topically to the continuous sheet, or it can be incorporated into the continuous sheet by premixing it with the fibers that are used to form the continuous sheet. When applied topically, the additive composition can be applied to the continuous sheet when the continuous sheet is wet or dry. In one embodiment, the additive composition can be applied topically to the continuous sheet during a pleating process. For example, in one embodiment, the additive composition can be sprayed onto the continuous sheet or onto a hot dryer drum to adhere the continuous sheet to the dryer drum. The continuous sheet can then be crimped from the dryer drum. When the additive composition is applied to the continuous sheet and then adhered to the dryer drum, the composition can be applied uniformly over the surface area of the continuous sheet, or You can apply according to a particular pattern. When applied topically to a continuous sheet of paper, the additive composition can be sprayed onto the continuous sheet; it can be extruded on the continuous sheet or printed on the continuous sheet. When extruded onto the continuous sheet, any suitable extrusion device, such as a slotted extruder, or a melt blown dye extruder can be used. When printing on the continuous sheet any suitable printing device can be used. For example, an inkjet printer or a rotogravure printing device may be used. The dispersion can be incorporated at any point in the papermaking process. The amount during the process, in which the dispersion is incorporated into the cellulose-based composition, may depend on the desired final properties of the cellulose-based product, as will be detailed below. Joints of incorporation may include pretreatment of the pulp, co-application at the wet end of the process, after-treatment after drying, but on the paper machine, and topical after treatment. The incorporation of the dispersion of the present invention onto or into the cellulose-based structure can be achieved by any of several methods, as illustrated by the following non-restrictive descriptions. For example, in some embodiments, adhesion to the sheet Continuous paper of the dispersion compound, in the form of a drum-dryer additive, present between the paper web and a drum drum surface, wherein a portion of the composite remains with the continuous sheet of paper when it separates the continuous sheet of paper from the dryer drum by peeling, by pulling, by the action of a pneumatic blade or by any other means known in the art. In other embodiments, the dispersion is added directly to a fibrous suspension, such as by injection of the compound into a suspension, before it enters the headbox. The consistency of the suspension can be from about 0.2 percent to about 50 percent, specifically from about 0.2 percent to about 10 percent; more specifically from about 0.3 percent to about 5 percent; and very specifically, from about 1 percent to about 4 percent. When combined at the wet end with the aqueous fiber suspension, a retention aid may also be present within the dispersion compound or within the additive composition. For example, in a particular embodiment, the retention aid may comprise polydiallyldimethylammonium chloride. The additive composition can be incorporated into the continuous sheet of paper by an amount of from about 0.01 percent to about 30 percent, such as from about 0.5 percent to about 20 percent in weight. For example, in one embodiment, the additive composition may be present in an amount up to about 10 percent by weight. The above percentages are based on the solids that are added to the paper web. In other embodiments, a dispersion spray can be applied to a continuous sheet of paper. For example, sprinkler nozzles may be mounted on a continuous sheet in motion, to apply a desired dose of a solution to the continuous tape which may be wet or substantially dry. Nebulizers can also be used to apply a light mist to a surface of a continuous sheet. In other embodiments, the dispersion can be printed on a continuous sheet of paper, for example, printing by offset, by printing by engraving, by flexigraphic printing, by ink jet printing, by digital printing of any kind, and other similar . In other embodiments, the dispersion may be applied on one or both surfaces of a continuous sheet of paper, such as by spatula coating, pneumatic knife coating, short-time coating, cast coating, and the like. In other embodiments, the dispersion can be extruded onto the surface of a paper sheet. For example, the extrusion of a dispersion is described in the publication of TCP WO 2001/1 2414, published on February 22, 2001, incorporated herein. by means of this reference, insofar as it is not contradictory with this one. In other embodiments, the dispersion can be applied to individualized fibers. For example, shredded or dried fibers can be dragged rapidly, in a stream of air combined with an aerosol or spray of the compound to treat the individual fibers, before their incorporation into a continuous sheet of paper or other fibrous product. In another embodiment, the dispersion can be heated before application to a continuous sheet of paper, or during said application. The heating of the composition can decrease the viscosity to facilitate the application. For example, the additive composition can be heated to a temperature of about 50 ° C to about 150 ° C. In other embodiments, a continuous sheet of paper, wet or dry, may be impregnated with a solution or suspension; wherein the dispersion penetrates a significant distance within the thickness of the continuous sheet, such as at least about 20 percent of the thickness of the continuous sheet; more specifically, at least about 30 percent and, very specifically, at least about 70 percent of the thickness of the continuous sheet, including full penetration of the continuous sheet throughout its full thickness. A useful method for impregnating a continuous sheet of wet paper is the HYDRASIZER® system, produced by Black Clawson Corp., Watertown, NY, E. U. A., as described in New Technology to Apply Starch and Other Additives, Pulp and Paper Canada, 1 00 (2): T42-T44 (February 1 999). This system consists of a given die, an adjustable supporting structure, a collection tray and an additive supply system. A thin line of liquid or descending suspension is created, which makes contact with the continuous moving sheet that passes under it. It is said that wide ranges of applied doses of coating material can be achieved, with good operating capacity. The system can also be applied to coat with curtain a relatively dry continuous sheet. In other embodiments, the dispersion can be applied to a fibrous sheet using a foaming application (eg, a foam finish) either for topical application or for impregnation of the dispersion compound in the continuous sheet, under the influence of a differential. of pressure (for example, the impregnation of the foam assisted by vacuum). The principles of foam application of additives, such as agglutinating agents, are described in U.S. Patent No. 4,297,860, entitled Device for Applying Foam to Textiles, issued November 3, 1981 to Pacifici and co-inventors.; and in U.S. Patent No. 4,773,110, entitled Foam Finishing Apparatus and Method, issued September 27, 1988 to G. J. Hopkins, both incorporated herein by this reference, to the extent that they are not contradictory to this.

In still other embodiments, the dispersion can be applied by patching a solution of the dispersion compound on an existing fibrous web. Fluid feed of the dispersion compound can also be used to apply it to the paper web. In other embodiments, the application of the dispersion compound by spray or other means is used to a moving web or cloth which, in turn, is in contact with the continuous sheet of paper, to apply the chemical to the continuous sheet. , as described in the publication of TCP WO 01/49937, by S. Eichhorn, entitled A Method of Applying Treatment Chemicals to a Fiber-Based Planar Product Via a Revolving Belt and Planar Products Made Using Said Method, published June 1, 2001. Topical application of the dispersion to a continuous sheet of paper may occur prior to roller drying in the process described above. In addition to apply the dispersion during the formation of the continuous sheet of paper,! Dispersion can also be used in post-training processes. For example, in one mode, d ispersion can be used during a printing process. Specifically, since it has been applied topically to either side of a continuous sheet of paper, the dispersion can be adhered to the paper web. For example, once the paper web has been formed and dried, in one embodiment, the dispersion can be applied to at least one side of the web. In general, you can apply dispersion on one side of the continuous sheet only, or the dispersion may be applied to each side of the continuous sheet. Before applying the dispersion compound to a continuous sheet of existing paper, the solids level of the continuous sheet may be about 10 percent or more (ie, the continuous sheet comprises about 10 grams of dry solids and 90 grams of water, such as approximately any of the following solid levels, or more: 1 2 percent, 1 5 percent, 1 8 percent, 20 percent, 25 percent, 30 percent, 35 percent, 40 percent, 45 percent, 50 percent, 60 percent, 75 percent, 80 percent, 90 percent, 95 percent, 98 percent, and 99 percent, with exemplary scales from approximately 30 percent to approximately 1 percent, and more specifically, from about 65 percent to about 90 percent). The solids level of the sheet continues immediately after the application of any of the dispersion, it can also be any of the previously mentioned solids levels. The preferred coating weight of the polyolefin would be from about 2.5 to 300 kg of polyolefin per metric ton (about 5 to about 600 pounds of polymer per ton) of the cellulose article. The coating weight of the most preferred polyolefin ranges from about 5 to about 150 kg per metric ton (about 10 to about 300 pounds of polymer per ton) of the article. of cellulose The most preferred thickness for dry coating ranges from about 10 to about 1000 kg of polyolefin per metric ton (20 to 200 pounds per ton). In certain embodiments, the incorporation may result in an article having a base polymer coating weight of less than 1.5 g / m2. In other embodiments, the incorporation may result in an article having a base polymer coating weight of between about 1.0 and about 10 g / m2; in the preferred embodiments, between about 1.0 and 5.0 g / m2. In other embodiments, the incorporation can result in a polymer or compound layer having a thickness between about 0.1 and about 100 microns.; in other embodiments, the layer may be between about 1.0 and about 15 microns; in preferred embodiments, between about 1.0 and about 10 microns; between about 1.0 and about 5.0 microns, in the most preferred modalities. Once the paper web is produced according to one of the processes described above, incorporating the dispersion or additive composition, according to the present disclosure, the web can be embossed, crimped and / or laminated with other continuous sheets, applying pressure and / or heat to the continuous sheet containing the dispersion. During the process, the additive composition can form highlights in the product and / or can forming areas of union for joining the paper web with other adjacent webs. The use of additive composition increases the process of embossing, curling or rolling, in several ways. For example, the embossing pattern may be much more defined due to the presence of the additive composition. Additionally, the embossing is not only water resistant but, unexpectedly, it has been discovered that a continuous sheet of paper containing the additive composition can be embossed without substantially weakening the web. In particular, it has been found that a continuous sheet of paper containing the additive composition can be enhanced without reducing the tensile strength of the continuous sheet, either in the machine direction or in the transverse direction to the machine, in more than about 5 percent. In fact, in some embodiments, the tensile strength of the continuous sheet can actually increase after the embossing process. When multilayer products are formed, the resulting paper product may comprise two layers, three layers or more. Each adjacent layer may contain the additive composition or at least one of the layers adjacent to another may contain the additive composition. The individual layers can usually be made of the same fiber or of different fiber, and they can be made by the same process or by a different process. In other embodiments, the dispersion may be applied after a paper product has been manufactured. That is, you can add a dispersion formed according to embodiments of the present invention, to a previously formed byproduct, such as by means of a paper converter, for example. The embodiments of the present invention can be used in an "on-line process", that is, during papermaking, or in an "off-line" application. An example is when the paper is previously coated with clay in a machine. Then, that product can have the dispersion applied as an alternative to the extrusion coated structures. Drying the incorporated dispersion The dispersion incorporated, for example, into the cellulose-based composition, as described above, can be dried by any conventional drying method. Such conventional drying methods include, but are not limited to: air drying, convection oven drying, hot air drying, microwave oven drying and / or infrared oven drying. The built-in dispersion! for example, in a cellulose-based composition, it can be dried at any temperature; for example, it can be dried at a temperature on the scale equal to or greater than the melting point temperature of the base polymer or, alternatively, it can be dried at a temperature on the scale of less than the melting point of the base polymer. . The dispersion incorporated, for example, into a cellulose-based composition, can be dried at a temperature in the range of about 60 ° F (5.5 ° C) to about 700 ° F (371 ° C). All individual values and subscales from approximately 60 ° F (15.5 ° C) to approximately 700 ° F (371 ° C) are included here and are described here; for example, the incorporated dispersion, for example, in a cellulose-based composition, can be dried at a temperature in the range of about 60 ° F (15.5 ° C) to about 500 ° F (260 ° C) or, alternatively , the dispersion incorporated, for example, into a cellulose-based composition, can be dried at a temperature in the range of about 60 ° F (15.5 ° C) to about 450 ° F (232.2 ° C). The temperature of the incorporated dispersion, for example, in a cellulose-based composition can be raised to a temperature on the scale equal to or greater than the melting point temperature of the base polymer, for a period of less than about 40. minutes All individual values and sub-scales of less than approximately 40 minutes are included here and described here; for example, the temperature of the incorporated dispersion, for example, in a cellulose-based composition, can be raised to a temperature on the scale equal to or greater than the melting point temperature of the base polymer for a period of less about 20 minutes; or alternatively, the temperature of the dispersion incorporated, for example, in a cellulose-based composition can be raised to a temperature on the scale equal to or greater than the melting point temperature of the base polymer, for a period of less from about 5 minutes, or in another alternative, the temperature of the incorporated dispersion, for example, in a cellulose-based composition, can be raised to a temperature on the scale equal to or greater than the temperature of the melting point of the basic polymer, for a period on the scale of approximately 0.5 to 300 seconds. In another alternative, the temperature of the incorporated dispersion, for example, in a cellulose-based composition can be raised to a temperature in the scale of less than the melting point temperature of the base polymer for a period of less than 40. minutes All individual values and sub-scales of less than about 40 minutes are included here and described here; for example, the temperature of the incorporated dispersion, for example, in a cellulose-based composition, can be raised to a temperature in the range of less than the melting point temperature of the base polymer for a period of less than one hour. about 20 minutes; or alternatively, the temperature of the incorporated dispersion, for example, in a cellulose-based composition can be raised to a temperature in the range of less than the melting point temperature of the base polymer, for a period of less than approximately 5 minutes; or in another alternative, the temperature of the incorporated dispersion, for example, in a cellulose-based composition, can be raised to a temperature in the range of less than the melting point temperature of the base polymer, during a period on the scale of approximately 0.5 to 300 seconds. Drying the incorporated dispersion, for example, in the cellulose-based composition, at a temperature in the scale of less than the melting point temperature of the base polymer, is important because it facilitates the formation of a film, as shows in Figure 4, which has a continuous phase of stabilizing agent, with a discrete base polymer phase, dispersed therein, in which the continuous base of the stabilizing agent improves the possibility of reusing the spoiled material , of the composition based on cellulose that incorporates the dispersion. It is important to dry the incorporated dispersion, for example, in the cellulose-based composition, at a scale on the scale equal to or greater than the melting point temperature of the base polymer, because it facilitates the formation of a The film shows, as shown in Figure 5, that it has a continuous phase of base polymer, with a discrete phase of stabilizing agent dispersed therein, where the continuous phase of base polymer thus improves the strength to the oils and the; fats, as well as providing a barrier to moisture and steam transmission. Preparation of the continuous sheets The continuous cellulosic sheet can be formed by any method known in the art. The cellulosic web can be laid in wet, such as a continuous sheet of paper, formed with papermaking techniques. known, where the aqueous suspension of diluted fiber is placed on a moving mesh to filter out the fibers and form a continuous sheet of paper, which is subsequently dehydrated by combinations of units including suction boxes, wet presses, drying units and Similar. Examples of known dehydration techniques, such as capillary dehydration, can also be applied to remove water from the continuous sheet, as described in U.S. Patent No. 5,598, 643, issued February 4, 1997, and the techniques described in U.S. Patent No. 4,556,450, issued December 3, 1985, both to SC Chuan and co-inventors. Various drying operations may be useful in the manufacture of the products of the present invention. Examples of said drying methods include, but not limited to: drum drying, total extraction drying, steam drying, such as superheated steam drying, displacement dehydration, Yankee drying, infrared drying, microwave drying, radiofrequency drying in general, and pulse drying, as described in U.S. Patent No. 5,353,521, issued October 1, 1994 to Orloff, and in U.S. Patent No. 5,598,642, issued February 4, 1997 to Orloff and co-inventors; the descriptions of both are incorporated herein by this reference, insofar as they are not contradictory with the present. You can use other drying technologies, such as methods employing differential gas pressure, including the use of pneumatic presses, as described in US Pat. No. 6,096, 1 69, issued August 1, 2000 to Hermans and co-inventors , and in U.S. Patent No. 6, 143, 1 35, issued November 7, 2000 to Hada and co-inventors; the descriptions of both are incorporated here by means of this reference, insofar as they are not contradictory with the present one. Also relevant are the papermaking machines described in U.S. Patent No. 5,230,776, issued July 27, 1993 to I. A. Andersson and co-inventors. The drying methods of US Pat. Nos. 6,949, 1 67, 6,837,970 and 6,808,595 may also be employed, each of which is hereby incorporated by reference. For application where smoothness is desired as the final property, non-compressing drying means may be employed. The cellulose article must exit the drying step at a minimum temperature, which is similar to the peak melting point of the polymer base of the dispersion, while remaining below temperatures that would damage the cellulose substrate. For example, the most useful temperatures would be 90 ° C to 140 ° C. For continuous sheets of paper, numerous manufacturing methods can be used. Representative methods are described in U.S. Patent No. 5,637,194, issued June 10, 1997 to Ampulski and co-inventors, and in the patent.

No. 4,529,480, issued on Jan. 6, 1985, to Trokhan; which are incorporated herein by this reference, insofar as they are not contradictory with the present. The continuous cellulosic sheets can be printed against a deflection member before drying completely. The deflection members have deflection conduits between raised elements, and the cellulosic web is flexed towards the deflection member by means of a pneumatic pressure difference, to create bulging domes; while portions of the cellulosic web that reside on the surface of the raised elements can be pressed against the surface of the dryer to create a network of patterned densified areas, which offer physical strength. The deflection members and the fabrics of use for printing a cellulosic web, as well as the related methods of cellulosic manufacturing, are described in the following documents: US Pat. 4,529,480, issued July 16, 1985 to Trokhan; U.S. Patent No. 4,514,345, issued April 30, 1985 to Johnson and co-inventors; U.S. Patent No. 4, 528, 239, issued July 9, 1985 to Trokhan; U.S. Patent No. 5,098,522, issued March 24, 1992 to Smurkoski; U.S. Patent No. 5,260, 1 71, issued November 9, 1993 to Smurkoski and co-inventors; U.S. Patent No. 5,275,700, issued January 4, 1994 to Trokhan; US patent No. 5,334,289, issued on August 2, 1994 to Trokhan and co-inventors; U.S. Patent No. 5,496,624, issued March 5, 1996 to Stelljes, J r. , and co-inventors; U.S. Patent No. 6,051,598, issued on January 4, 2000 to Boutilier and co-inventors; and U.S. Patent No. 5,628,876, issued May 1, 1997, to Ayers and co-inventors, as well as the assigned application as well as the present serial No. 09/705684, by Lindsay and co-inventors. Additionally, other methods dealing with higher density papers are described in U.S. Patent Nos. 6,702, 925 and 6,372,091, as well as in U.S. Patent Publication No. 2005023007, all of which are incorporated herein by way of this reference, insofar as they are not contradictory with this one. The fibrous web is generally a random plu- rality of paper-forming fibers that, optionally, they can be joined together with a binder. Any fiber-forming fibers can be used. paper, as previously defined, or mixtures thereof, such as bleached fibers from a process of kraft pulping or sulphite chemistry. Recycled fibers, such as cotton linters or paper-forming fibers comprising cotton, can also be used. High performance and low performance fibers can be used. In one embodiment, the fibers can be predominantly hardwood, such as at least 50 percent hardwood or 60 percent hardwood or more, or approximately 80 percent hardwood. hard or more, or substantially 1 00 percent of wood. In another embodiment, the web is predominantly softwood, such as at least about 50 percent softwood or at least about 80 percent softwood, or about 100 percent softwood. The continuous fibrous sheet of the present invention can be formed from a single layer or from several layers. Both physical strength and softness are often obtained by means of continuous stretched sheets, such as those produced from stratified head boxes, where at least one layer supplied by the headbox comprises softwood fibers, while another layer comprises hardwood or other fibers. In the case of several layers, the layers are generally located in a juxtaposed relation, or from surface to surface, and all the layers, or a portion thereof, can be joined to the adjacent layers. The cellulosic continuous sheet may also be formed of a plurality of separate continuous cellulosic sheets, where the separate continuous cellulosic sheets may be formed of a single layer or of several layers. It is also possible to treat continuous, dry, air-laid cellulosic sheets with semi-synthetic cationic polymers. Continuous cellulose sheets laid with air can be formed by any method known in the art, and in generally comprise dragging fiberized or ground cellulosic fibers into a stream of air and depositing the fibers to form a mat. The mat can then be calendered or compressed, before or after chemical treatment, using known techniques including those of US Pat. No. 5,948,507, issued September 7, 1999 to Chen and co-inventors, incorporated herein by reference. medium of this reference to the extent that it is not contradictory with this. Optional chemical additives Optional chemical additives may also be added to the aqueous paper-forming or paper furnish to impart additional benefits to the product and / or the process, and are not antagonistic to the intended benefits of the present invention. The following materials are included as examples of additional chemical substances that can be applied to the paper sheet, with or without addition to the polymer dispersions of the present invention. The chemical substances are included as examples, and are not intended to limit the scope of the present invention. Said chemical substances can be added at any point of the papermaking process, such as before or after the addition of the polymer dispersion. They can also be added simultaneously with the copolymer dispersion. They can be mixed with the copolymer dispersions. Optional chemical additives that may be used in the present invention include those described in the patent No. 6,949, 167 and in U.S. Patent No. 6,897, 1 68, each of which is incorporated herein by way of this reference. For example, optional chemical additives may include: hydrophobic additives, wetting agents, binders, charge promoters or charge controllers, reinforcing agents, including wet reinforcing agents, temporary wet reinforcing agents and dry reinforcing agents; undoing agents, softening agents, synthetic fibers, odor controlling agents, fragrances, absorbency auxiliaries, such as superabsorbent particles, dyes, brighteners, lotions or other skin care additives, desensing agents, microparticulate materials, microcapsules and other supply vehicles; preservatives and antimicrobial agents, cleansing agents, silicone, emollients, surface touch modifiers, opacifiers, pH controlling agents and dry auxiliaries, among others. The point of application of said materials and said chemical substances is not particularly relevant in the present invention, and said materials and said chemical substances can be applied at any point in the papermaking process. This includes pretreatment of the pulp, co-application at the wet end of the process, after-treatment, after drying, but on the machine to make the paper, and topical post-treatment. Chemical additives can be combined and incorporated into the paper web together with the dispersions described further back. The advantages of the present invention include: reuse of spoiled paper, improved resistance to oils and fats, improved water resistance, and an improvement in both softness and physical resistance. Reuse of spoiled paper: An important attribute for efficient operations within a paper mill is the ability of the paper composition to be recovered within the process. Shore trimmings and paper formed during the start / stop are typically reused (transformed back into a pulp suspension) and used again to form virgin paper. Many polyolefin compositions of the prior art are not recoverable for reuse. However, specific formulations using ethylene-acrylic acid or other copolymers as a stabilizing agent are reusable. Improved resistance to oils / greases and improved water resistance: An advantage of this invention is the possibility of obtaining specific levels of resistance to oils and greases or water. Depending on the particular polyolefin dispersion used, the Kit value, a measure of the resistance to oils and fats (OG R) of paper or cardboard, can vary from six (moderate performance) to 1 2 (high performance). Frequently high levels of Kit values are required for demanding packaging applications, such as pet food balls, pizza boxes, wraps for hamburgers and the like. Advantageously, the embodiments of the present invention may allow the cellulose article to maintain the resistance to oils, greases and / or moisture, after being bent. Combination of softness and physical strength: Another key advantage described in this invention is the ability to incorporate certain polyolefin dispersions using a variety of methods to produce cellulose structures having improved physical strength (measured by the tensile strength of absorbed traction energy), while maintaining or improving softness. Production costs and efficiency: Another important advantage described in this invention is the possibility of producing improved cellulose articles at high speeds (in papermaking equipment) using various application techniques. This allows the pulp producer to balance the performance of the final product with the manufacturing efficiency and cost, through a combination of the dispersion composition and the method used to apply the dispersion. The polymer composition used to modify the cellulose article is critical to increase properties such as OG R and physical strength. The polyolefin is composed mainly of the base polymer and the dispersing agent (s). The base polymer typically comprises at least 50 percent of the non-aqueous portion of the dispersion. The dispersing agent it comprises from about 2 percent to about 40 percent by weight of the total solids content of the dispersion. The amount of dispersing agent depends largely on the type of agent used. Low molecular weight surfactants, such as fatty acids and their salts, can be used at very low levels, up to about 2 weight percent of the total solids content of the dispersion. The combination of the base polymer and the stabilizing agent can affect the properties of the dispersion, which are important to obtain the improved properties in the cellulose article. For example, the type and amount of stabilizing agent, or the type and amount of polymer can affect the properties of the dispersion, thereby affecting the resulting film formation, the adhesion of the polymer and the stabilizing agent to a substrate, such as cellulose; resistance to oils and fats, and other properties. Film formation: For many applications, the formation of a continuous film is critical to obtain a barrier against moisture and against oils / fats. In the case of coatings on cellulose articles, the impossibility of forming a continuous film causes holes in the coating and compromises the performance of the barrier. Film formation can be increased by a variety of dispersion parameters, which include the incorporation of larger amounts (30 weight percent of the total content of dispersion solids, and more) of ethylene acrylic acid copolymer (EAA), neutralizing the EAA copolymer to a greater degree to form the corresponding salt (at least 50-60 percent, neutralized up to 1 00 percent) and the use of a base polymer that has a lower melting point. In some embodiments, the base polymer may have a melting point of less than 1100 ° C. In other embodiments, the melting point may be less than 1 00 ° C; in preferred embodiments, the melting point may be less than 90 ° C. Adhesion to cellulose: In applications where physical resistance is required, adhesion between the dispersed polymer and the cellulose structure is critical. Adhesion can be increased by incorporating larger amounts (10 percent by weight of the total solids content of the dispersion, and more) of ethylene-acrylic acid copolymer (EAA). Adhesion to cellulose can be improved by the addition of grafted maleic anhydride in the polymers. Resistance to oils and greases: In applications where OGR is required, the resistance of the dry polymer to attack by oils and greases is critical. The resistance to attack by chemical substances can be increased by the incorporation of larger amounts (1.0 percent by weight of the total solids content of the dispersion, and more) of the ethylene-acrylic acid copolymer (EAA) and, in the selected modality, neutralizing the EAA copolymer to a greater degree (ie more than about 50 percent neutralization of the EAA, on the molar basis of acrylic acid), to form the corresponding salt. In addition to the composition of the polyolefin and the stabilizing agent used in the dispersion added to the cellulose, the manner in which it is incorporated can also have a major impact. Topical addition of the polyolefin to the cellulose article (which may be wet or dry), such as by spraying, extruding or printing, for example, may be preferred for more efficient barrier applications (against oils, fats, water): incorporation into the cellulose article by premixing with the fibers that are used to form the article may be preferred to optimize physical strength and softness properties. In other embodiments, the dispersions formulated in accordance with the present invention can be used as a thermally sealable coating on paper, such as a size / adhesive layer to allow the paper to bond to other substrates (such as chattable films, metallic foil). and other papers), and / or as a modifier of the coefficient of friction in the paper. Depending on the crystallinity or the thickness of the dispersion, the coefficient of friction can be increased or decreased. For example, low crystallinity dispersions can be effective as an anti-slip coat for boxes (i.e., increasing the coefficient of friction). Examples Formation of dispersion: In one of the following Examples including dispersions, dispersions were formed according to the methods described in WO 2005/021638, which is incorporated herein by means of this reference, and described above with respect to Figure 1. The dispersion was formed. using an ethylene-octene copolymer and a surfactant system. The ethylene-octene copolymer used was the AFFINITY ™ EG 8200 plastomer (a copolymer obtainable from The Dow Chemical Company, having a density of about 0.87 g / cm 3 (ASTM D-792) and a melt index of about 5 g / 10 min, when determined in accordance with ASTM D1238 at 190 ° C and 2.16 kg). The surfactant system used was a combination of UNICID ™ 350 (a carboxylic acid of 26 carbon atoms, obtained from Baker-Petrolite, acid value, 115 mg KOH / g), and AEROSOL ™ OT-100 (a dioctyl sulfosuccinate sodium, obtained from Cytec Industries). UNICID ™ and AEROSOL ™ were used at a load of 3 percent and 1 percent by weight, respectively, based on the weight of EG8200. An aqueous dispersion having a solids content of 53.1 weight percent and a pH of 10.3 was obtained. The dispersed polymer phase was measured by means of a Coulter LS230 particle analyzer, which consisted of an average volume diameter of 0.99 microns, and a particle size distribution (Dv / Dn) of 1.58. In selected embodiments, the dispersions mentioned herein were formulated according to the methods described in WO 2005/021638.

Dispersion 2 was also formed using the plastomer AFF I N ITY ™ EG 8200 and a surfactant system. The surfactant system used was 30 weight percent (based on the amount of EG 8200) of PRI MACOR ™ 59801 copolymer (an ethylene-acrylic acid copolymer obtained from The Dow Chemical Company, which has a melt index of about 1 5 g / 1 0 min, determined in accordance with ASTM D 1 238 to 125"C / 2.16 kg, and an acrylic acid content of about 20.5 weight percent.) An aqueous dispersion having a high content was obtained. of solids of 38.8 percent by weight and a pH of 10.2 The dispersed polymer phase, measured by means of a Coulter LS230 particle analyzer, consisted of an average volume diameter of 0.96 microns and a particle size distribution (Dv / Dn) of 1 .94 AFFI N ITY ™ EG 81 85: Ethylene-octene copolymer having a density of 0.885 g / cc (ASTM D792) and a melt index of 30 g / 1 0 min (1 90 °) C / 2.16 kg, ASTM D1238) Additionally, composition A, which is a plast, was used. propylene-based experimental batch or elastomer ("PBPE") having a density of 0.876 g / cm3, a melt flow rate (230 ° C / 2.1 6 kg) of 8 grams / 10 min and an ethylene content of 9 percent by weight of PBPE. These PBPE materials are taught in WO 03/040442 and in the US application 60 / 709,688 (filed August 1, 2005), each of which is incorporated herein in its entirety by means of this reference.

Examples 1 to 8 were coated with a dispersion, where the dispersion was applied on the rough side of a Fraser base material having a basis weight of 59 g / m2, using winding rods. Table 1 shows the specific combination of dispersion composition, coating thickness and drying time, used to generate examples 1 to 8. The drying of the dispersion coating on the paper substrate was carried out at 149 ° C (300 ° F). ), using a convection oven. Table 1 Coating thickness and drying time for examples 1 to 8 Samples 1 to 8 were tested to determine their performance when exposed to oil. The evaluation was carried out with hot oil, placing a drop of oil on each sample, and the drops were examined at various intervals of time. time to determine the degree to which the oil entered the sample. The test oils consisted of sesame oil, vegetable oil, cañola oil, olive oil, peanut oil, corn oil and oleic acid. The oils were preheated to 140 ° F (60 ° C) in an oven. A 6 x 7 inch (1 5.24 x 1 7.78 cm) coated sheet was adhered with tape onto a PLEXIG LAS® acrylic sheet. Then a drop of oil was placed on the surface of the sample and time was recorded. The samples were then sorted on an approved-to-failed scale, immediately, without cleaning the oil. This is the immediate reading or "I" on the test chart. The scale from approved to failed is classified as follows: P = approved, that is, without spotting on the front side or on the back side. LS = slightly saturated; that is, without smudges through the back side of the paper. hs = highly saturated, that is, stain spread across the back side of the paper. S = complete saturation of the fibrous network. A # = number of holes in the field of fall M = M in the field of oil fall. The samples were again sorted after one hour at ambient conditions. This reading is indicated as "1" (one hour) on the test chart.

The treated samples were then placed in an oven at 140 ° F (60 ° C) during the night. After 20 to 24 hours in the oven, the samples were removed and the oil was cleaned from the surface. The back side of the samples was observed through the PLEXIG LAS® acrylic sheet. Spotting is more easily observed through the back side with back lighting. Alternatively, the samples of the PLEXIGLAS® acrylic sheet were completely removed. The total time from the initial to the final reading was recorded, up to the nearest 0.5 hour. The results of the hot oil test are shown in table 2. Table 2 Evaluation with hot oil for samples 1 to 8 The Kit test: The Kit value of each sample was determined using TAPPI T559cm-02. The test was carried out as described in the TAPPI test. This involves putting five separate drops of oil on the surface of the carton and inspecting the cardboard after a given exposure time (15 minutes) to see if there is any pronounced loss of the paper. Each solution was numbered up to a maximum of 1 2, and the higher the number reached, the more elastic the surface will be. The results of the Kit test are shown in Table 3. Table 3 Results of the Kit test for samples 1 to 8 These data show that samples 1 to 4 exhibit good functional performance that produces moderately high Kit values and good performance in the evaluation with hot oil at times of exposure to oil for up to one hour. These data show that samples 5 to 8 exhibit excellent Kit maximum values that produce excellent performance and good functioning. Several dispersions were analyzed in terms of moisture barrier properties and water resistance, and are detailed in Table 4. Dispersions 3 to 7 serve as comparative examples for the embodiments of the present invention, since Dispersions 3 to 7 do not include a polymer and a stabilizing agent. Dispersions 3 to 1 3 were applied on kraft paper, applied with roller # 3 and dried at 1 20 ° C. The moisture vapor transmission rates and the water resistance of the coated paper samples were then measured and compared with uncoated kraft paper. Table 4 Composition of dispersions 3 to 13 TABLE 4 (continued) Table 5 provides additional details about some dispersions shown above. The viscosity was measured using a RV2 spindle at 23 ° C and 100 rpm.

The dispersion 14 was also formed, in accordance with the present invention, using the AFFI N ITY ™ EG8200 plastomer and a surfactant system. The surfactant system used was 40 weight percent (based on the amount of EG 8200) of the PRI MACOR ™ 5980I copolymer (an ethylene-acrylic acid copolymer, obtained from The Dow Chemical Company, which has an melting of about 15 g / 10 min, determined in accordance with ASTM D1 238 at 1 25 ° C / 2.1 6 kg, and an acrylic acid content of about 20.5 weight percent). An aqueous dispersion having a solids content of about 38 weight percent was obtained at a pH of about 1 0. The dispersed polymer phase, as measured by a Coulter LS230 particle analyzer, consisted of an average volume diameter of approximately 0.9 microns and a particle size distribution (Dv / Dn) of approximately 2.7. Potassium hydroxide was used as a neutralizing agent. The degree of acid neutralization, which is based on the amount of the base solution, ie, potassium hydroxide, consumed for acid neutralization, was 95 percent of the total amount of acid. The dispersion 14 was formed to a first film and dried in the air. Figure 4 is a view in section j in atomic force microscope in patter mode, of this first film made at room temperature. The first film, as shown in Figure 4, includes a continuous phase of stabilizing agent. The dispersion 14 was also formed to a second film by spraying the dispersion on a heated drum with a surface air temperature of 1 20 ° C. Figure 5 is a sectional view in atomic force microscope, in patter mode, of this second dispersion film, made at elevated temperatures. The second dispersion film, as shown in FIG. 5, includes a continuous phase of base polymer, with a discrete phase of stabilizing agent dispersed in the continuous base polymer phase. The moisture vapor transmission rate (MVTR) was measured using the ASTM E96-80 dish test. The test measures the transmission of moisture from a wet chamber through a test specimen (sheet) and into a dry chamber, which contains a desiccant. The MVTR experiments carried out were carried out at room temperature with a humid chamber having a relative humidity of 70 percent. The moisture vapor transmission rates for the sheets incorporating the dispersions 3 to 1 3 are shown in Figure 2. In the embodiments of the present invention, the total solids content, i.e., a combined amount of the at least one polymer and the at least one stabilizing agent comprises from about 25 to about 74 volume percent of the total aqueous dispersion. In other embodiments, the combined amount may be approximately 30 percent to 60 percent.

The water resistance / water absorption was measured using a Cobb test according to ASTM D3285-93. The exposure time was 2 minutes. The test involved a known volume of water (1 00 ml_) that was poured over a specific area of the cardboard surface (1 00 cm2). The cardboard was weighed before and after the exposure, and the difference between the two was then expressed as the weight per unit of water, of water absorbed in that given time; the lower the Cobb value, the better the result. Figure 3 shows the ag ua resistance by means of the Cobb test for examples 3 to 1 3. This data shows that the amount of soluble potassium salt has a deental performance on water resistance / barrier. The samples that perform better used ammonia as the neutralizing base for the EAA or used KOH as the neutralizing base for the fatty acid. As used herein, the specific volumes of the cellulose articles according to the embodiments of the present invention may be less than about 3 cc / g. In other modalities the specific volumes can vary from 1 cc / g to 2.5 cc / g. The specific volume is calculated as the quotient of the caliber of a dry sheet, expressed in microns, divided by the dry basis weight, expressed in grams per square meter. The resulting specific volume is expressed in cubic centimeters per gram. More specifically, the gauge is measured as the total thickness of a stack of ten representative sheets, and dividing the total thickness of the stack between ten; where each sheet within the stack is placed with the same side up. The gauge is measured according to the test method T41 I om-89 of TAPP I "Thickness (gauge) of paper, cardboard and combined cardboard" with note 3 for the stacked sheets. The micrometer used to perform T41 1 om-89 is an Emveco 200-A veil gauge tester, obtainable from Emveco, I nc. , Newberg, Oregon. The micrometer has a load of 2.00 kilopascal (1 32 grams per square inch), a foot pressure area of 2500 thousand square meters, a pressure foot diameter of 56.42 millimeters, a dwell time of 3 seconds, and a speed of descent of 0.8 thousand meters per second. The standard C RYSTAF method The branching disutions are determined by fractionation by crystallization analysis (C RYSTAF) using a CRYSTAF 200 unit, obtainable commercially from PolymerChar, Valencia, Spain. The samples are dissolved in 1, 2, 4-hlorobenzene at 160 ° C (0.66 mg / mL) for one hour, and stabilized at 95 ° C for 45 minutes. The sampling temperatures vary from 95 to 30 ° C at a cooling rate of 0.2 ° C / min. An infrared detector is used to measure the concentrations of the polymer solution. The cumulative soluble concentration is measured when the polymer crystallizes, while the temperature is lowered. The analytical derivative of the cumulative profile reflects the chain branching disution short of the polymer. The peak temperature and C RYSTAF area are identified by the peak analysis module, included in the CRYSTAF software (Version 2001. b, PolymerChar, Valencia, Spain). The routine to find the peak of C RYSTAF identifies a peak temperature as a maximum in the curve dW / dT, and the area between the maximum positive inflections on each side of the peak identified in the derived curve. To calculate the CRYSTAF curve, the preferred processing parameters are with a temperature limit of 70 ° C and with uniform parameters above the temperature limit of 0.1, and below the temperature limit of 0.3. Bending / drying module / storage module Samples are compression molded using ASTM D1928. Modules of bending and drying at 2 percent are measured, according to ASTM D-790. The storage module is measured in accordance with ASTM D 5026-01, or with an eq uivalent technique. Standard DSC method The results of the differential scanning calorimetry are determined, using a TAI Q 1000 DSC model, equipped with an RCS cooling accessory and a self-sampler. A purge nitrogen gas flow of 50 mL / min is used. The sample is pressed to a thin film and melted in the press at approximately 1 75 ° C, and then cooled to room temperature air (25 ° C). Then 3 to 10 mg of material is cut to a 6 mm diameter disc, weighed accurately, placed in a Light aluminum tray (approximately 50 mg) and then curled to close it. The thermal behavior of the sample is investigated with the following temperature profile. The sample is quickly heated to 80 ° C and maintained isothermally for 3 minutes, in order to eliminate any previous thermal history. The sample is then cooled to -40 ° C at a cooling rate of 1 0 ° C / min, and maintained at 40 ° C for three minutes. The sample is then heated to 1 50 ° C, at a heating rate of 1 0 ° C / min. The cooling and second heating curves are recorded. The DSC melting peak is measured as the maximum in the thermal flux rate (W / g) with respect to the linear baseline drawn between -30 ° C and the end of the melt. The heat of fusion is measured as the area below the melting curve, between -30 ° C and the end of the melt, using a linear baseline. The calibration of the DSC is carried out as follows. First a basic line is obtained operating a DSC from -90 ° C, without any sample in the aluminum tray of the DSC. Then 7 milligrams of a fresh Indian sample are analyzed, heating the sample to 80 ° C, cooling the sample to 140 ° C, at a cooling rate of 1 0 ° C / min, followed by maintaining the sample isothermally at 140 ° C. C for one minute, after which the mixture is heated from 140 ° C to 1 80 ° C, at a heating rate of 10 ° C per minute.The heat of fusion and the beginning of melting of the sample of Indian, and it is verified that are within 0.5 ° C of the 56.6 ° C for the start of the fusion, and within 0.5 J / g of the 28.71 J / g for the fusion. The deionized water is analyzed by cooling a small drop of the fresh sample in the DSC tray from 25 ° C to -30 ° C, at a cooling rate of 10 ° C per minute. The sample is isothermally maintained at -30 ° C for two minutes and heated to 30 ° C at a heating rate of 1 0 ° C per minute. The start of the melting is determined and checked to be within 0.5 ° C of 0 ° C. The G PC method The gel permeation chromatographic system (G PC) consists of a Polymer Laboratories instrument, model PL-21 0, or an instrument of Polymer Laboratories model PL-220. The column and the compartments of the carousel are operated at 140 ° C. Three Mixed-B columns of 10 microns are used, from Polymer Laboratories. The solvent is 1, 2, 4-trichlorobenzene. The samples are prepared at a concentration of 0. 1 gram of polymer in 50 milliliters of solvent containing 200 ppm of butylated hydroxytoluene (BHT). The samples are prepared by shaking slightly for two hours at 1 60 ° C. The injection volume used is 1 00 microlitres, and the flow rate is 1.0 μL / min. The calibration of the set of GPC columns with 21 polystyrene posts with narrow molecular weight distribution, with molecular weights ranging from 580 to 8,400,000, arranged in six "cocktail" mixtures with at least a decade of separation between individual molecular weights. The Posts from Polymer Laboratories (Shropshire, United Kingdom). The polystyrene posts are prepared at 0.025 grams in 50 milliliters of solvent, for molecular weights equal to or greater than 1,000,000, and 0.05 grams in 50 milliliters of solvent for molecular weights less than 1,000,000. The polystyrene posts are dissolved at 80 ° C with moderate agitation for 30 minutes. The mixtures of narrow posts are run first and in descending order from the component of maximum molecular weight, to minimize the degradation. The peak molecular weights of the polystyrene posts are converted to polyethylene molecular weights using the following equation (as described in Williams and Ward, J. Polym, Sci. Polym, Let., 6, 621 (1968)): Polyethylene = 0.431 (Mp0 | is zero). Polyethylene equivalent molecular weight calculations are performed using the Viscotek TriSEC software, version 3.0. The density Samples are prepared for density measurement according to ASTM D 1928. Measurements are carried out within one hour of pressing the sample, using ASTM D792, method B. ATREF Analytical analysis is performed by fractionation in elution at temperature which rises (ATREF) according to the method described in U.S. Patent No. 4,798,081, and in Wilde, L., Ryle, TR, Knobeloch, D. C, Peat, IR Determination of Branching Distributions in Polyethylene and Ethylene Copolymers; J. Polym.

Sci., 20, 441-455 (1982), which are incorporated herein in their entirety by means of this reference. The composition to be analyzed is dissolved in trichlorobenzene and allowed to crystallize in a column containing an inert support (stainless steel ammunition), slowly reducing the temperature to 20 ° C at a cooling rate of 0.1 ° C / min. The column is equipped with an infrared detector. Then an ATREF chromatogram curve is generated by eluting the sample of crystallized polymer from the column, slowly increasing the temperature of the elution solvent (trichlorobenzene) from 20 to 120 ° C at a rate of 1.5"C / minute. samples by adding approximately 3 g of a 50/50 mixture of tetrachloroethane-d2 / orthodichlorobenzene, to 0.4 g of sample, in a 10 mm tube for NMR, dissolve the samples and homogenize by heating the tube and its contents to 150 °. C. The data is collected using the JEOL Eclipse ™ 400 MHz spectrometer, or a 400 MHz Varian Unity Plus ™ spectrometer, which corresponds to a 3C resonance frequency of 100.5 MHz. The data is acquired using 4000 transients per log file. data, with a delay in the pulse repetition of 6 seconds.To obtain the minimum ratio of signal to noise for quantitative analysis, multiple data files are added together.The spectral amplitude is 25,000 Hz, with a minimum file size of 32K data points. The samples are analyzed at 130 ° C in a 10 mm wide band probe. The incorporation of the comonomer is determined using Randall's triad method (Randall, J. C, JMS-Rev. Macromol. Chem. Phys., C29, 201-317 (1989), which is incorporated herein in its entirety by of this reference The block index Ethylene / alpha-olefin interpolymers are characterized by an ABI block index that is greater than zero and up to about 1.0, and by a molecular weight distribution, Mw / Mn of more than about 1.3 The average block index, ABI is the average weight of the block index ("Bl") for each of the polymer fractions obtained in the preparatory TREF (ie, the fractionation of a polymer by fractionation by elution with elevation of temperature) from 20 ° C and 110 ° C, with an increase of 5 ° C (although other temperature increases, such as 1 ° C, 2 ° C, 10 ° C) can also be used: wherein Bl, is the block index for the "i-th" fraction of the ethylene / alpha-olefin interpolymer of the invention, obtained in the preparatory TREF; and w, is the weight percentage of the i-th fraction. Similarly, the square root of the second moment about the mean, hereinafter referred to as the average weight block index of the second moment, can be defined as follows: Bl average weight of 2nd moment = where: N is defined as the number of fractions with Bl¡ greater than zero. With reference to Figure 9, for each polymer fraction, Bl is defined by one of the following two equations (both give the same value Bl): BI ^ TX 'UTX0 or g / = _L ^ -WQ VTA- \ ITM LnPA ~ LnPAB where Tx is the ATREF elution temperature (ie, analytical TREF) for the i-th fraction (preferably expressed in degrees Kelvin); Px is the molar fraction of ethylene for the i-th fraction, which can be measured by nuclear magnetic resonance or IR, as described below. PAB is the ethylene mole fraction of the total ethylene / alpha-olefin interpolymer (before fractionation), which can also be measured by nuclear magnetic resonance or IR. TA and PA are the ATREF elution temperature and the mole fraction of ethylene for the pure "hard segments" (which refer to the crystalline segments of the interpolymer). As an approximation, or for polymers in which the composition of the "hard segment" is unknown, the TA and PA values are set at the values for the high density polyethylene homopolymer. TAB is the ATREF elution temperature for a random copolymer of the same composition (having a molar fraction of PAB ethylene) and the same molecular weight as the copolymer of the invention. TAB can be calculated from the mole fraction of ethylene (measured by nuclear magnetic resonance) using the following equation: wherein a and ß are two constants that can be determined by means of a calibration, using several fractions of well characterized preparatory TREF, of a random copolymer of wide composition, and / or random ethylene copolymers well characterized with narrow composition. It should be noted that a and ß may vary from one instrument to another. In addition, it would be necessary to create an appropriate calibration curve with the polymer composition of interest, using appropriate molecular weight ranges and a type of comonomer appropriate for the preparative TREF fractions and / or the random copolymers used to create the calibration. There is a slight effect of molecular weight. If I obtain the calibration curve from similar ranges of molecular weight, this effect would be essentially imperceptible. In some embodiments, as illustrated in FIG. 8, the ethylene glycol copolymers and / or preparative TREF fractions of the random copolymers satisfy the following relationship: Ln P = -237.83 / ATREF + 0.639 The above calibration equation refers to the mole fraction of ethylene, P, at the elution temperature of analitic TREF, TATR E F, for random copolymers of narrow composition and / or Preparative TREF fractions of randomized copolymers of wide composition. Txo is the temperature of ATR EF for a random copolymer of the same composition (ie, the same type and the same comonomer content) and the same molecular weight, and having an ethylene fraction of Px. Tx0 can be calculated from LnPX = a /? 0 + ß, from a measured molar fraction of Px. Conversely, Pxo is the molar fraction of ethylene for a random copolymer of the same composition (ie, the same type and the same comonomer content) and the same molecular weight, and having an ATEF temperature of Tx, which can it be calculated from Ln Px0 = a / ?? + ß, using a measured value of Tx. Once the block index (B l) is obtained for each preparatory TREF fraction, the average weight block index, AB I, can be calculated for the entire polymer. The mechanical properties - Traction, hysteresis and tear The stress-strain behavior is measured in uniaxial tension, using microtraction samples ASTM D 1 708. The samples are stretched with an Itrontron at 500 percent min "at 21 ° C. They report tensile strength and elongation to bursting from an average of five samples, 100 percent and 300 percent of hysteresis are determined from the cyclical load at 1 00 percent and 300 percent effort, using ASTM D 1 708 microtraction samples with an I nstron ™ instrument, the sample is loaded and unloaded at 267 one hundred min "for three cycles at 21 ° C. Cyclic experiments are carried out at 300 percent and 80 ° C, using an environmental chamber.In the experiment at 80 ° C the sample is allowed to equilibrate for 45 minutes at test temperature, before testing In the cyclic 300 percent stress experiment, at 21 ° C, the retraction tension is recorded at 1 50 percent stress from the first discharge cycle. of recovery for all experiments from the first discharge cycle, using the effort to which the load returned to the basic line.The recovery percentage is defined as:% recovery =: - - ~ xl00 where 8f is the effort taken for the cyclic loading, and e5 is the effort when the load returns to the basic line during the first discharge cycle Advantageously, one of the embodiments of the present invention can provide for the production of improved cellulose products , compared to the prior art compositions. Although the invention has been described with respect to a limited number of modalities, those having experience in the field, having the benefit of this description, will appreciate that other modalities can be devised that do not go beyond the scope of the invention, such as described here. Accordingly, the scope of the invention should be limited only by the claims that follow.

All priority documents are fully incorporated herein by reference, for all jurisdictions in which such incorporation is permitted. Additionally, all documents cited herein, including the test procedures, are hereby incorporated fully, by reference, for all jurisdictions in which said incorporation is permitted.

Claims (53)

1. CLAIMS 1. A method for forming a cellulose article, comprising: incorporating cellulose fibers with a compound; wherein the compound comprises: an aqueous dispersion, comprising: at least one polymer, selected from the group consisting of a thermoplastic polymer based on ethylene, a thermoplastic polymer based on propylene, and mixtures thereof; at least one polymeric stabilizing agent; Water; and wherein a combined amount of the at least one polymer and the at least one stabilizing agent comprises from about 25 to about 74 volume percent of the aqueous dispersion; and forming a cellulose article having a specific volume of less than 3 cc / g. The method according to claim 1, wherein the incorporation comprises at least one method selected from the group consisting of: pretreatment of a fiber pulp, used to form a continuous sheet of paper; addition to a wet end of a papermaking process; treatment during the formation of a continuous sheet of paper, or after said formation; application during a drying step of a papermaking process, or after said step of drying; and combinations of them. 3. The method according to claim 2, wherein the addition comprises: mixing the compound with an aqueous suspension of fibers. 4. The method according to claim 2, wherein the application comprises: coating, spraying, extruding, impregnating or padding the compound into or onto the paper web. 5. The method according to claim 1, wherein the incorporation results in an article having a total polymer weight of about 2.5 to about 300 kg of polymer per metric ton of the article. 6. The method according to claim 1, wherein the incorporation results in an article having a total polymer weight between about 1 g / m2 and 10 g / m2. 7. The method according to claim 1, wherein the incorporation results in a polymer layer and the polymeric stabilizing agent having a thickness of less than about 1.5 microns. 8. The method according to claim 7, wherein the incorporation results in a layer of the polymer and stabilizing agent having a thickness of less than about 5 microns. 9. The method according to claim 1, wherein the fibers comprise at least one na selected from the group. which consists of natural cellulose fibers, synthetic cellulose fibers and mixtures thereof. 1. The method according to claim 1, wherein the stabilizer comprises a partially or fully neutralized ethylene-acid copolymer. eleven . The method according to claim 10, wherein the ethylene-acid copolymer is neutralized by about 50 percent to about 10 percent on a molar basis. The method according to claim 1, wherein the ethylene-acid copolymer is at least one selected from the group consisting of ethylene-acrylic acid and ethylene-methacrylic acid. The method according to claim 8, further comprising: reusing at least a portion of the fibers incorporated with the compound; and wherein the copolymer comprises an ethylene-acrylic acid copolymer. 14. The method according to claim 1, wherein the polymeric stabilizing agent comprises ethylene-acid copolymer, wherein the at least one polymer has a melting point of less than 10 1 ° C, and wherein the copolymer of Ethylene-acid is neutralized at about 50 percent to about 1 percent, on a molar basis. 5. The method according to claim 14, wherein the ethylene-acid copolymer constitutes approximately 10 to about 50 weight percent of the total solids content of the dispersion. The method according to claim 1, wherein the stabilizing agent constitutes from about 2 to about 40 weight percent of the total solids content of the dispersion. The method according to claim 1, wherein the cellulose article has a resistance value to oils and fats of at least 9, when measured using the Kit test, at an exposure time of 1. 5 seconds. 8. The method according to claim 1, wherein the cellulose article has a water resistance value of less than about 10 g / m2 / 20 seconds, when measured by the Cobb test. 9. The method according to claim 1, wherein the cellulose article has a moisture vapor transmission rate of less than about 200 g / m2 / 24 hours, when measured at room temperature, and a relative humidity on the wet side of 70 percent. The method according to claim 1, further comprising applying heat, at about 1 00 ° C to about 140 ° C, to the incorporated mixture. twenty-one . The method according to claim 1, wherein the article is a paper, a cardboard, a corrugated box, wallpaper or photographic quality paper. 22. A cellulose based article having a specific volume of less than 3 cc / g, comprising: a composition based on cellulose; and an applied compound; wherein the applied compound, at the time of application, comprises an aqueous dispersion comprising: at least one polymer selected from the group consisting of a thermoplastic polymer based on ethylene; a thermoplastic polymer based on propylene; and mixtures of them; at least one stabilizing agent, wherein the stabilizing agent comprises an ethylene-acid copolymer, partially or torally neutralized; and water; where the article has a value of resistance to oils and fats of at least 9, when measured using the Kit test, at an exposure time of 1 5 seconds. 23. A cellulose-based article having a specific volume of less than 3 cc / g, which comprises: a cellulose-based composition; and an applied compound; wherein the applied compound, at the time of application, comprises an aqueous dispersion comprising: at least one polymer selected from the group consisting of a "thermoplastic polymer based on ethylene, a thermoplastic polymer based on propylene". and mixtures of them; at least one stabilizing agent, wherein the stabilizing agent comprises an ethylene-partial or fully neutralized acid copolymer; and water; wherein the cellulose based article has a water resistance value of less than about 10 g / m2 / 1 20 seconds, when measured by the Cobb test. 24. A cellulose-based article having a specific volume of less than 3 cc / g, which is formed by means of a process comprising: supplying pulp fibers to the process; incorporate the fibers with a compound; wherein the compound comprises an aqueous dispersion comprising: at least one polymer selected from the group consisting of a thermoplastic polymer based on ethylene; a thermoplastic polymer based on propylene, and mixtures thereof; at least one stabilizing agent; Water; wherein the process comprises: forming an aqueous suspension of the pulp fibers; forming the aqueous suspension to a continuous sheet of paper; withdraw at least a portion of the water from the paper web. 25. A method for forming a cellulose article, comprising: applying a compound to a cellulose-based composition; wherein the compound comprises an aqueous dispersion comprising: at least one polymer selected from the group consisting of a thermoplastic polymer based on ethylene, a thermoplastic polymer based on propylene, and mixtures thereof; at least one stabilizing agent; and water; forming an aqueous suspension of the cellulose-based composition; forming the aqueous suspension to a continuous sheet of paper; drying the continuous sheet of paper; the continuous sheet of paper having a specific volume of less than 3 cc / g. 26. A thermally bonded cellulose-based article having a specific volume of less than 3 cc / g, which is formed by means of a process comprising: supplying pulp fibers to a process; incorporate the fibers with a compound; wherein the compound comprises an aqueous dispersion comprising: at least one polymer selected from the group consisting of a thermoplastic polymer based on ethylene, a thermoplastic polymer based on propylene, and mixtures thereof; at least one stabilizing agent; Water; wherein the process comprises: forming an aqueous suspension of the pulp fibers; forming the aqueous suspension to a continuous sheet of paper; dry the continuous sheet of paper and thermally bond with pressure and heat, during drying, or after it. 27. A cellulose-based article, thermally enhanced or thermoformed, having a specific volume of less than 3 cc / g, which is formed by a process comprising: supplying pulp fibers to the process; incorporate the fibers with a compound; wherein the compound comprises an aqueous dispersion comprising: at least one polymer selected from the group consisting of a thermoplastic polymer based on ethylene, a thermoplastic polymer based on propylene, and mixtures thereof; at least one stabilizing agent; Water; wherein the process comprises: forming an aqueous suspension of the pulp fibers; forming the aqueous suspension to a continuous sheet of paper; dry the continuous sheet of paper and thermally enhance or thermoform with heat, during drying or after it. 28. The article formed by the method of claim 1, wherein the cellulosic article contains less than 50 weight percent cellulose. 29. The article formed by the method of claim 1, wherein the cellulosic article contains more than or equal to 50 100 percent by weight of cellulose. 30. The method according to claim 1, wherein the method further comprises the step of: removing at least a portion of water, at a temperature on the scale of less than the melting point of the polymer selected from the group consisting of a thermoplastic polymer based on ethylene, a thermoplastic polymer based on propylene and mixtures of them 31. The method according to claim 1, wherein the method further comprises the step of removing at least a portion of the water at a temperature on the scale equal to or greater than the melting point of the selected polymer. of the group consisting of a thermoplastic polymer based on ethylene, a thermoplastic polymer based on propylene and mixtures thereof. 32. The method according to claim 1, wherein the method further comprises the step of increasing the temperature of the compound incorporated in the cellulose fiber, at a temperature in the scale of less than the melting point of the selected polymer. The product consists of a thermoplastic polymer based on ethylene, a thermoplastic polymer based on propylene and mixtures thereof. 33. The method according to claim 1, wherein the method further comprises the step of increasing the temperature of the compound incorporated in the cellulose fiber at a temperature in the range equal to or greater than the point of fusion of the polymer selected from the group consisting of a polymer thermoplastic based on ethylene, a thermoplastic polymer based on propylene and mixtures of them. 34. The method according to claim 25, wherein the paper web is dried at a temperature on the scale of less than the melting point of the polymer selected from the group consisting of a thermoplastic polymer based on of ethylene, a thermoplastic polymer based on propylene and mixtures thereof. 35. The method according to claim 25, wherein the paper web is dried at a temperature in the scale equal to or greater than the melting point of the polymer selected from the group consisting of a thermoplastic polymer based on of ethylene, a thermoplastic polymer based on propylene and mixtures thereof. 36. The method according to claim 25, wherein the method further comprises the step of increasing the temperature of the continuous sheet of paper to a temperature in the scale of less than the melting point of the polymer selected from the group that It consists of a thermoplastic polymer based on ethylene, a thermoplastic polymer based on propylene and mixtures thereof. 37. The method according to claim 25, wherein the method further comprises the step of increasing the temperature of the paper web at a temperature on the scale equal to or greater than the melting point of the polymer. selected from the group consisting of a thermoplastic polymer based on ethylene, a thermoplastic polymer based on propylene and mixtures thereof. 38. The article according to claim 26, wherein the paper web is dried at a temperature in the scale of less than the melting point of the polymer selected from the group consisting of a thermoplastic polymer based on of ethylene, a thermoplastic polymer based on propylene and mixtures thereof. 39. The article according to claim 26, wherein the paper web is dried at a temperature in the scale equal to or greater than the melting point of the selected polymer of the group consisting of a thermoplastic polymer. based on ethylene, a thermoplastic polymer based on propylene and mixtures of them. 40. The method according to claim 26, wherein the method further comprises: the step of increasing the temperature of the paper web at a temperature in the range of less than the polymer melting point. selected from the group consisting of a thermoplastic polymer based on ethylene, a thermoplastic polymer based on propylene and mixtures thereof. 41 The method according to claim 26, wherein the method further comprises the step of increasing the temperature of the paper web at a temperature in the web. scale equal to or greater than the melting point of the polymer selected from the group consisting of a thermoplastic polymer based on ethylene, a thermoplastic polymer based on propylene and mixtures thereof. 42. The article according to claim 27, wherein the paper web is dried at a temperature on the scale of less than the melting point of the polymer selected from the group consisting of a thermoplastic polymer at base of ethylene, a thermoplastic polymer based on propylene and mixtures of them. 43. The article according to claim 27, wherein the paper web is dried at a temperature on the scale equal to or greater than the melting point of the polymer selected from the group consisting of a thermoplastic polymer at base of ethylene, a thermoplastic polymer based on propylene and mixtures of them. 44. The method according to claim 27, wherein the method further comprises the step of increasing the temperature of the paper web at a temperature on the scale of less than the melting point of the polymer selected from the group that It consists of a thermoplastic polymer based on ethylene, a thermoplastic polymer based on propylene and mixtures thereof. 45. The method according to claim 27, wherein the method further comprises the step of increasing the The temperature of the continuous sheet of paper at a temperature on the scale equal to or greater than the melting point of the polymer selected from the group consisting of a thermoplastic polymer based on ethylene, a thermoplastic polymer based on propylene and mixtures of they. 46. An article based on cellulose, comprising: a composition based on cellulose; a film comprising: a continuous phase of base polymer, wherein the base polymer is selected from the group consisting of a thermoplastic polymer based on ethylene, a thermoplastic polymer based on propylene and mixtures thereof; and a discrete phase of stabilizing agent, dispersed in the continuous phase of the base polymer; where the cellulose article has a specific volume of less than 3 cc / g. 47. A cellulose-based article, comprising: a composition based on cellulose; , a film comprising: a continuous phase of stabilizing agent; and a discrete phase of base polymer, dispersed in the continuous phase of stabilizing agent; wherein the base polymer is selected from the group consisting of a thermoplastic polymer based on ethylene, a thermoplastic polymer based on propylene, and mixtures thereof; where the cellulose article has a specific volume of less than 3 cc / g. 48. An article comprising: a composition that is not cellulose based; a film comprising: a continuous phase of stabilizing agent; and a discrete phase of base polymer, dispersed in the continuous phase of stabilizing agent; wherein the base polymer is selected from the group consisting of a thermoplastic polymer based on ethylene, a thermoplastic polymer based on propylene, and mixtures thereof. 49. An article comprising: a composition that is not based on cellulose; a film comprising: »a continuous phase of base polymer; wherein the base polymer is selected from the group consisting of a thermoplastic polymer based on ethylene; a thermoplastic polymer based on propylene, and mixtures thereof; and 'a discrete phase of stabilizing agent, dispersed in the continuous phase of base polymer. 50. A method for forming an article comprising the steps of: providing a composition that is not cellulose based; provide an aqueous dispersion! where the dispersion comprises: at least one polymer selected from the group consisting of of a thermoplastic polymer based on ethylene, a thermoplastic polymer based on propylene, and mixtures thereof; at least one polymeric stabilizing agent; and water; applying the aqueous dispersion on the composition that is not cellulose based; remove at least a portion of the water, at a temperature in the range of less than the melting point of the polymer selected from the group consisting of a thermoplastic polymer based on ethylene, a thermoplastic polymer based on propylene and mixtures of they. 51 The method according to claim 50, wherein the step of removing at least a portion of the water further includes the step of increasing the temperature of the aqueous dispersion applied on the composition which is not based on cellulose, a temperature in the scale of less than the melting point of the polymer selected from the group consisting of a thermoplastic polymer based on ethylene, a thermoplastic polymer based on propylene and mixtures thereof. 52- A method for forming an article, which comprises the steps of: providing a composition that is not cellulose based; provide an aqueous dispersion; wherein the dispersion comprises: at least one polymer selected from the group consisting of a thermoplastic polymer based on ethylene, a thermoplastic polymer based on propylene, and mixtures thereof; at least one polymeric stabilizing agent; and water; applying the aqueous dispersion on the composition that is not cellulose based; removing at least a portion of the water at a temperature on the scale equal to or greater than the melting point of the polymer selected from the group consisting of a thermoplastic polymer based on ethylene, a thermoplastic polymer based on propylene and mixtures from them. 53. The method according to claim 52, wherein the step of removing at least a portion of water further includes the step of increasing the temperature of the aqueous dispersion applied on the non-cellulose-based composition, at a temperature in the range equal to or greater than the melting point of the polymer selected from the group consisting of a thermoplastic polymer based on ethylene, a thermoplastic polymer based on propylene and mixtures thereof. SUMMARY In one embodiment, the present invention provides a method for forming a cellulose article having a specific volume of less than 3 cc / g. The method includes the step of incorporating cellulose fibers with a compound, wherein the compound includes an aqueous dispersion. The aqueous dispersion may have at least one polymer selected from the group consisting of a thermoplastic polymer based on ethylene, a thermoplastic polymer based on propylene, and mixtures thereof; at least one polymeric stabilizing agent, and water. In certain embodiments, a combined amount of the at least one polymer and the at least one stabilizing agent comprises about 25 to about 74 volume percent of the aqueous dispersion.