Abstract: A method for applying a foam to a paper web is provided. Specifically, a foam is first formed from a liquid-based composition and a gas, such as air. Once formed, the foam is applied by a foam applicator to the web. In one embodiment, for example, the foam applicator applies the foam without substantially contacting the web. When applied with the foam, the web typically has a solids consistency less than about 95% by weight of the web. In some embodiments, one or more vacuum slots can be utilized in conjunction with the foam applicator to facilitate uniform application of the foam to the paper web.

Abstract: The present invention is generally directed to paper products having great softness and strength. The paper products are formed from a paper web that can be made according to various methods. In one embodiment, the paper web is an uncreped through-air dried web. The web can contain softwood fibers in combination with high-yield fibers. For example, the high-yield fibers can be contained in the middle layer of a stratified fiber furnish. In accordance with the present invention, a first bonding material is applied to a first side of the web and a second bonding material is applied to a second side of the paper web. The bonding materials are applied according to preselected patterns. At least one side of the paper web is creped after one of the bonding materials is applied. The bonding material applied to the creped side of the web can be an adhesive selected that allows the web to be creped at relatively low temperatures.

Abstract: A coated paper for printing comprising a base paper and a coating layer containing a pigment and an adhesive, wherein the coating layer has a volume distribution of 65% or more of pigment particles ranging from 0.4 &mgr;m to 4.2 &mgr;m in size, and wherein the coated paper has a basis weight of 50 g/m2 or less and tensile strength ranging between 200 kN/m and 400 kN/m, inclusive.

Abstract: The present invention relates to an aqueous coating composition which comprises an alkali oxidised aqueous gelatinised starch/protein mixture, said composition having a viscosity between 1 and 100 centapoise (cps), and a pH from pH 7.5 to pH 9, particularly compositions wherein said alkali oxidised aqueous gelatinised starch/protein mixture comprises a solids content of from 3% w/w to 50% w/w, and processes in the preparation of the same and also processes employing the said composition in the preparation of paper or fibreboard.

Abstract: Ink jet printing paper capable of providing, by using a low permeablity or a nonpermeable supporting sheet, a high surface glossiness and a high dot reproducibility of a silver halide photograph level, an excellent absorptivity of ink, and a high recording density, and preventing cockling by ink solvent, comprising the low permeablity or the nonpermeable supporting sheet, at least one ink receiving layer coated on the supporting sheet, and a luster layer coated on the ink receiving layer, the ink receiving layer in contact with the luster layer comprising pigment, as a main component, having a specific surface area-based mode diameter of pore distribution of 100 nm or less and an average secondary particle size of 1.3 &mgr;m or less, and the luster layer comprising pigment, as a main component, having an average primary particle size of 5 to 100 nm.

Abstract: Textile materials, including paper webs, treated with a polyvinylamine polymer and a second agent that interacts with the polyvinylamine polymer is disclosed. The second agent added with the polyvinylamine polymer can be, for instance, a polymeric anionic reactive compound or a polymeric aldehyde-functional compound. When incorporated into a paper web, the combination of the polyvinylamine polymer and the second agent provide improved strength properties, such as wet strength properties. In an alternative embodiment, the polyvinylamine polymer and the second polymer can be applied to a textile material for increasing the affinity of the textile material for acid dyes.

Abstract: Coating composition comprising mineral pigment, for creating a matt or silk coated paper with decreased ink scuff tendency. The coating composition also comprises organic particles, which particles in an amount of 0.5-9.5 weight-% calculated on said mineral pigment, exhibit a particle size of more than 2 &mgr;m and at the most 50 &mgr;m. The invention also relates to a paper which is coated with said coating composition.

Abstract: The invention concerns the use of hydrosoluble homopolymers and/or copolymers of acrylic/or methacrylic acid with one or more acrylic, vinyl or allyl monomers as an aid to the grinding of mineral particles in aqueous suspension, providing them by their use particular optical properties.

Abstract: An absorbent paper sheet is treated with an aqueous wax dispersion such that the sheet includes a fused wax and emulsifier residue in an amount of from about 1 to about 20 weight percent of the sheet based on the combined weight of the fiber, wax residue and an emulsifier residue in the sheet. The fused wax emulsion operates to make at least one surface of the sheet laterally hydrophobic, exhibiting a moisture penetration delay of at least about 2 seconds and less than about 40 seconds as well as a typical contact angle with water at one minute of at least about 50 degrees. There is thus provided absorbent products which exhibit both absorbency and resistance to moisture penetration. The treated sheet further exhibits microbial barrier properties, impeding transfer of bacteria, for example, through the sheet. There are produced tissue products which resist moisture penetration from propelled liquids as well as sequester sorbed liquids in the interior of the tissue.

Abstract: The specification discloses papers suitable for liquid electrophotographic printing (“LEP”) and a method for making such papers. According to the method, a papermaking furnish containing cellulosic fibers is formed into a fibrous web on a papermaking machine and at least partially dried. The web is then treated with a sizing composition comprising starch, an acrylic acid polymer, an organic material having an HLB value of from about 2 to about 14 such as a polyglycerol ester, and water. The treated web is dried and calendered to a final desired caliper. Since the sizing composition is an aqueous mixture, it may be applied to the web on-line during production of the paper on the papermaking machine, thereby avoiding the expense and inconvenience of conventional off-line methods used to make existing LEP papers. The resulting paper exhibits at least 80% and preferably above 90% toner adhesion as measured by the tape pull tests used for the assessment of papers printed by LEP.

Abstract: A method for making a fibre web, especially aboard web. The fibre web (W) is pre-calendered in a long-nip calender (11; 21), which replaces the Yankee cylinder. The invention also concerns a concept for making a fibre web, especially board. The concept includes a long-nip calender (11; 21) for pre-calendering the fibre web and to replace the Yankee cylinder.

Abstract: A method of producing core raw paper is provided that prevents corrugation cracking, corrugation cutting or breakage from occurring during corrugating operation using a corrugating roll, prevents the wearing of the corrugating roll, reduces the consumption of driving power and noise, is capable of uniformly and efficiently coating the core raw paper with wax, and does not pollute facilities such as a paper machine.

Abstract: A method for marking a watermark-type pattern onto at least part of an absorbent paper sheet is described. The method involves stress-deforming the sheet by making it pass between at least one first roll and at least one second roll. A film of additive is applied in unheated manner to at least one of the sheet surfaces during the marking stage, thereby enhancing watermark formation. Additionally described is an absorbent paper sheet including at least one cellulose web ply which is made by the above method.

Abstract: The present invention is a method of making a near-premium quality paper product having good strength and absorbency characteristics and a product made by that method. The invention is also a method for retaining a high ash content within a paper web formed by conventional wet pressing. The present invention is also a method for retaining a high percentage of softening agent within a paper web that includes such an agent. Further, the present invention is a soft absorbent paper product having a high void volume. Finally, the invention is also a method for producing a soft, absorbent, and near premium paper product having a high void volume using an undulatory crepe blade having a multiplicity of serrulations in its rake surface which presents differentiated creping angles and/or rake angles as to the paper being creped.

Abstract: A coating for finishing paper or cardboard, with pigments in an aqueous dispersion including a binding agent in a portion of at least 7 percent by weight, preferably 9 to 15 percent by weight (depending on the pigment percentage). Also included is a thickener in a portion of 0.05 to 0.5 percent by weight, preferably 0.2 to 0.4 percent by weight (depending on the pigment percentage) and one surfactant in a portion of at least 0.1 percent by weight (depending on the pigment percentage), preferably 0.2 to 1 percent by weight. The solid content amounts to 50 to 75 percent by weight, preferably 55 to 65 percent by weight, and wherein the viscosity exhibited is no greater than 2500 mPas, preferably less than 500 mPas (Brookfield 100 UPM, 20° C.). A method for producing coated papers or cardboards, where the coating is thoroughly degassed prior to application.

Abstract: This invention relates to a process for preparing sized paper and paperboard which incorporates in the paper and paperboard at the size press size a composition comprising one or more “hydrophobic polymers” wherein hydrophobic polymers, the amount of such polymers and the weight ratio of starch to such polymer in the composition are selected such that the paper and paper board exhibits a Cobb Value equal to or less than about 25 and to a sized paper or paperboard web formed by the process.

Abstract: A fibrous structure comprising a cationic silicone polymer comprising one or more polysiloxane units and one or more non-pendant quaternary nitrogen moieties, and a method for making such a fibrous structure is provided. Further, a sanitary tissue product comprising the fibrous structure is also provided.

Abstract: A method of making a multilayer paper web, wherein at least two paper sheets are formed and dried separately to a dry content of no more than 80% by weight, imparting a three-dimensional pattern of alternating raised and recessed portions in the paper sheets during drying, combining the paper sheets into a multilayer web, in which void volumes are created between the raised and recessed portions of the combined sheets and drying the multilayer web.

Abstract: A method and apparatus for calendering paper or board in the manufacture of coated grades of paper or board. At least one of the surfaces of an uncoated base material web is calendered, at least one layer of coating mix being applied onto said surface, and at least the coated surface of the base web is calendered again. The uncoated surface of the base web is calendered by means of a shoe calender having a nip length of at least 50 mm, and the coated surface of the base web is calendered by means of a calender having a nip length of 50 mm at the most.

Abstract: A coating mix for the production of coated paper and board is described in form of an aqueous dispersion with a solids content of 50 to 80% consisting of pigments, binders, and additives. The coating mix exhibits thixotropic flow characteristics and is characterized by the usage of special amine-group or amide-group containing polymers, which act as protective colloids for the pigment particles. The coating mix contains preferably between 0.1 to 1 weight percent of a grafted gelatin.

Abstract: The invention relates to an aqueous dispersion useful for internal sizing or surface sizing in the production of paper, comprising at least one cellulose reactive sizing agent selected from the group consisting of ketene dimers and multimers, at least one cellulose non-reactive sizing agent and at least one emulsifier selected from the group consisting of oxyalkylene phosphate and sulfate esters and salts thereof. The invention further concerns a process for its preparation, use thereof, and processes for the production of paper.

Abstract: A method is disclosed for topical application of compositions containing a chemical additive onto a paper web. The present invention is also directed to paper products formed from the method. In general, the method includes the steps of extruding a composition containing a chemical additive through a melt blown die and then applying the composition to a moving paper web. In one embodiment, the chemical composition is extruded into fibers and applied to the paper web. The chemical composition can contain, for instance, various additives, such as a polysiloxane softener.

Abstract: In the method for manufacturing printing paper the base paper of the printing paper contains mechanical pulp and/or recycled fibre. The method also comprises the surface sizing and calendering of the base paper. In the method the base paper is calendered before surface sizing in a calender that comprises at least one nip that is formed between a hard-faced roll and a soft counter surface. The invention also relates to a printing paper manufactured by means of the method.

Abstract: A method of sizing paper by applying a composition comprising an aqueous dispersion of polymeric particles of particle size up to 1 micron, preferably 80-200 nm, wherein the polymeric particles comprise a water insoluble polymer matrix, preferably formed from styrene and 2-ethylhexyl acrylate, characterized in that an oligomer formed from a monomer blend comprising, (a) (meth)acrylamide, and (b) organic mercaptan or an organic sulphone, preferably dodecyl mercaptan or dodecyl sulphone is located at the surface of the particles. Compositions where the oligomer further comprises an ethylenically unsaturated monomer comprising either a tertiary amine group or a quaternary ammonium group, preferably dimethylaminoethylmethacrylate are novel. Advantages of the composition when applied to the surface of paper, include improved water resistance, brightness and printability properties of the treated paper.

Abstract: The invention provides a low density paperboard material and associated method for use in producing an insulated container, and is especially well-suited for making cups. The paperboard material comprises a paperboard web including wood fibers and expanded microspheres, and has a relatively low density ranging from about 6 to about 10 lb/3MSF/mil, a relatively high caliper ranging from about 24 to about 35 mil, and an internal bond strength of at least about 80×10−3 ft-lbf., preferably at least 100×10−3 lft-lbf. For applications such as cups the material is also coated on one or both sides with a barrier coating, preferably low density polyethylene, to limit liquid penetration into the web. The low density paperboard material of the invention is convertible for manufacture of containers, particularly cups, and exhibits insulative properties comparable to higher cost materials conventionally used to make cups.

Abstract: A method is disclosed for strengthening a paper or textile article. The method involves (a) applying to the article a solution of an amorphous fluoropolymer in a perfluoroalkane solvent; and (b) drying the article. Also disclosed are strengthened paper and textile articles which include a fibrous paper or textile substrate, and amorphous fluoropolymer interconnecting fibers of the substrate.

Abstract: A method for applying a foam composition to a paper web is provided. Specifically, a paper web is initially formed from papermaking fibers and is carried by a first moving papermaking surface so that a first surface of the paper web faces the first moving papermaking surface (e.g., fabric). A foam composition is deposited onto a second moving papermaking surface (e.g., fabric). The second moving papermaking surface is positioned adjacent to the first moving papermaking surface so that a second surface of the paper web faces the second moving papermaking surface. As a result, at least a portion of the foam composition is transferred to the paper web.

Abstract: A pulp packing material comprising: a first layer containing crosslinked pulp as a main component; and a second layer containing non-crosslinked pulp or biodegradable plastics as a main component, which are produced by sheet making, wherein the first and second layers are stuck and laminated onto each other.

Abstract: Recording materials are produced by a process in which a mixture A comprising

Abstract: In order to provide grease, oil and wax resistance to a paper substrate, a coating containing a binder, a filler material and calcium carbonate is used. The coating of the invention is essentially free from fluorocarbons, which are considered harmful to human and animal populations, and surfactants and other chemicals which may alter the color of the coated paper. The coated paper has a GE brightness level between approximately 50 and approximately 90, while providing superior grease, oil and wax resistance.

Abstract: An object of the present invention is to provide a newsprint paper having a friction coefficient in an appropriate range, a sufficient sizing quality, a low “neppari” strength and excellent printability.

Abstract: A method and assembly is disclosed for manufacturing a sized web of paper or paperboard, the method comprising the steps of first forming the web at a headbox (1) from a stock comprising at least water and fiber, then pressing the web for water drainage, and finally drying the web by heating. Size furnish is added to the web so that at least a portion of the overall amount of size is added to the web prior to initiating the drying of the web by heating, and at least a portion of the overall amount of size is applied to the web after initiating the drying of the web.

Abstract: A paper sizing and coating composition suitable for use in food packaging that is effective over a range of atmospheric conditions. The composition includes a starch and a water-soluble protein having a bloom strength of at least about 150. The composition can be applied over a paper substrate to improved oil and grease resistance.

Abstract: The present invention relates to a coated fibrous web and a method for producing it. According to the present invention, a coated fibrous web comprises a filler-containing base web that has a pigment-containing coating layer on at least one surface. The filler of the base web consists at least partially of cellulose or lignocellulose fibrils, on the surface of which light scattering material particles have been deposited. The filler comprises cellulose or lignocellulose fibrils having an average thickness less than 5 &mgr;m produced from plant fibres by refining and screening. Considerable advantages are achieved with the present invention. With the help of the composite filler, the formation of the fibrous web can be improved significantly without impairing the retention, which makes is possible to achieve an extremely smooth substrate for the coating. The smoothness of the surface can also be improved.

Abstract: The present invention relates to a process for recycling cleaner rejects from the preparation of paper, paperboard and cardboard and to their use for the preparation of paper in the paper stock or as a coating slurry for the paper industry.

Abstract: A method is disclosed for application of compositions onto non-woven webs, such as paper webs. The present invention is also directed to products made from the process. In general, the method includes applying a composition to a non-woven web using a non-impact printer, such as an ink jet printer. The composition is applied, in one embodiment, as droplets that remain as discrete shapes on the substrate. In this manner, treated areas and untreated areas are formed on the web. Through this process, the water absorption and control properties of the web can be adjusted as desired while simultaneously treating the web with a composition that improves the physical and/or chemical properties of the web.

Abstract: Systems and processes are provided for the treatment of cellulosic pulp rolls. Generally, the systems and processes apply a series of compositions, such as debonding compositions, binder compositions and lubricant compositions, to cellulosic fiber webs provided on pulp rolls. The systems and processes provide a cost effective means by which to form cellulosic fiber pellets which may then be incorporated into a variety of end uses.

Abstract: Paper coated with a coating slip containing at least one optical brightener is produced by a process in which base paper or precoated paper is treated, before application of the coating slip containing optical brightener, with at least one substance which enhances the efficiency of optical brighteners.

Abstract: The invention relates to coated printing paper which contains mechanical pulp and whose opacity is at least 89%, brightness at least 65% and surface roughness not more than 4.5 &mgr;m. The printing paper contains mechanical pulp at least 90 weight-% of the total fibre content of the paper.

Abstract: A coated, optically brightened printing paper includes a coating base paper and an applied coating containing a pigment, a binder, and color coating supplements, with an optical brightener containing a derivative of diaminostilbene disulfonic acid applied to the outer side of the color coating. The coating base paper is coated with the coating layer using rollers, nozzles, blades, or scrapers, and then dried using IR radiators, hot air, or cylinder contact. An optical solution containing the optical brightener is applied to the dried coating layer and optionally dried again.

Abstract: The present invention concerns a method of producing a calendered, coated fibrous web, according to which method a fibrous web is coated with a coating colour containing a coating pigment, and the coated fibrous web is calendered. According to the invention, at least 1%, preferably 10 to 100% of the weight of the pigment comprises calcium oxalate, and calendering the coated web by online calendering. The properties of the calcium oxalate pigment are so advantageous for calendering that it is possible to obtain a reasonably high gloss already with a machine calender (online calendering), which will eliminate need for a separate offline calender in the production line of matt surface papers.

Abstract: The present invention is polysiloxane pretreated pulp fibers comprising pulp fibers, and a polysiloxane. The polysiloxane pretreated pulp fibers have a polysiloxane content of about 0.4 percent or greater by weight of dry pulp fibers, a silicone retention factor of about 0.6 or greater, and an initial water drop absorption value of about 180 seconds or less.

Abstract: In a process for preparing a white pigment mixture suitable for coating paper wherein a cationically bulked kaolin clay pigment is dispersed in water in the presence of an anionic dispersant and mixed with a calcium carbonate pigment, the improvement which comprises using an epichlorohydrin amine complex to bulk said kaolin, and employing as the dispersant the combination of at least 0.2% based on the dry weight of said cationically bulked kaolin of a condensed naphthalene sulfonate complex having a molecular weight of 2000 to 10,000 and a sodium polyacrylate salt having a molecular weight of 2000 to 5000, said dispersant being free from lignosulfonate.

Abstract: A method is disclosed for topical application of compositions containing a chemical additive onto a paper web. The present invention is also directed to paper products formed from the method. In general, the method includes the steps of applying a composition containing a chemical additive onto a first side of a paper web. The paper web is then wound into a roll. During winding, a portion of the composition transfers from the first side of the web to the second side of the web. Thus, both sides of the web become treated with the composition through a single application of the composition to the web.

Abstract: A method is disclosed for application of compositions onto non-woven webs, such as paper webs. The present invention is also directed to products made from the process. In general, the method includes applying a composition to a non-woven web using a non-impact printer, such as an ink jet printer. The composition is applied, in one embodiment, as droplets that remain as discrete shapes on the substrate. In this manner, treated areas and untreated areas are formed on the web. Through this process, the water absorption and control properties of the web can be adjusted as desired while simultaneously treating the web with a composition that improves the physical and/or chemical properties of the web.

Abstract: The present invention discloses a paper web with a highly textured surface and a method of forming the highly textured web. The process includes printing a viscous material onto the surface of a paper web in a pattern with a low pressure printing process. Specifically, it has been discovered that certain low pressure printing technologies may be used to deliver a viscous material to the surface of a paper web such as a tissue, an air laid web, or a fibrous nonwoven web with good control of material delivery. At some point after the viscous material is applied to the web, the material may be fibrillated into a three-dimensional structure and then cured. In various embodiments, the viscous material may be fibrillated and cured so as to provide a good scrubbing surface to the web, provide an attachment structure on the web, or provide a good contact surface against a second substrate in forming laminate products.

Abstract: Disclosed is a soft tissue paper product, said soft tissue product comprising one or more plies of a tissue paper; and a chemical softening composition deposited on at least one outer surface of a dried or overdried tissue web, said chemical softening composition comprising a dispersion of a softening active ingredient in a vehicle, wherein said dispersion has a liposomal liquid crystalline structure; an electrolyte, and a bilayer dirupter.

Abstract: Tissue products are disclosed that contain a hydrophobic additive, such as a polysiloxane. In accordance with the present invention, the tissue products are further treated with a wetting agent. The wetting agent may be applied after application of the hydrophobic additive to one or more surfaces of the base sheet. The wetting agent improves the wettability properties of the base sheet.

Abstract: Paper products treated on two surfaces with a liquid resistant composition are disclosed. The paper products can be, for instance, bath tissues, facial tissues, paper towels, and industrial wipers. The liquid resistant compositions can include any additive that provides benefits to the product. For instance, the liquid resistant composition can be a softener containing a hydrophobic additive. In one embodiment, the hydrophobic additive is a polysiloxane. In accordance with the present invention, the water resistant composition is applied to each surface according to a pattern. Each of the patterns includes treated and untreated areas. The patterns are positioned on the paper product such that untreated areas on one surface are in correspondence with the treated areas on the other surface of the sheet.

Abstract: A method for forming a tissue product that is soft and produces relatively low levels of slough is provided. The method includes providing a liquid furnish of cellulosic fibers and forming a multi-layered wet web therefrom. The web is dried (e.g., through-dried) to a solids consistency of 90% or greater. A latex having a glass transition temperature less than about 30° C. is applied to the dried web (e.g., foamed, printed, sprayed, etc.) such that the latex comprises less than about 3% by weight of the dry weight of the web. The latex remains substantially uncured after being applied to the dried web.