Abstract: Release papers and release paper backings (10) are disclosed. The release papers and release paper backings (10) can include a network of fibers (12) and yellow and/or red dye and a first coating (14) on a first surface (16). Light transmission through the release paper and release-paper backings (10) can be, for example, between about 40% and about 80% at a wavelength of about 680 nm. The Gurley density can be, for example, between about 4,000 seconds and about 10,000 seconds. The release papers and release paper backings (10) also can have a positive b* value on the International Commission on Illumination L*a*b* scale. Overall, the release papers and release paper backings (10) can have a greater ability to transmit light when compared with conventional release papers and release paper backings at some or all wavelengths in the visible spectrum.

Abstract: A method and an arrangement for treating a web (2) of paper or board is described, in which a functional coating (5) is applied to the web (2) and the web (2) is then calendered. It is wished to obtain a web provided with a functional coating in a cost-effective fashion. This is achieved through the following combination: the functional coating (5) is applied without direct contact, the web (2) is calendered online in conjunction with the application of the coating, calendering takes place in a broad nip (18) in a shoe calender (9), which exhibits a shoe roller (10) with a rotating outer cover (11) and a squeeze roller (14).

Abstract: A nonwoven web has a weight sufficient for construction industry use and comprises at least forty percent (40%) recycled waste paper. At least one surface of the web bears a biocide, e.g., has a biocide applied thereto. Preferably the weight of the web is greater than fifteen pounds per thousand square feet (15-lbs/MSF). Preferably the biocide is zinc pyrithione. The web preferably bears at least 50-grams of biocide per thousand square feet per side of said web. One example use of the web is as builders felt, with other uses including as a facer for a laminate board and for asphalt-impregnated webs. The biocide-bearing nonwoven web is specifically directed to use in building construction. One example use of the web is as builders felt, with other uses including as a facer for a laminate board and for asphalt-impregnated webs.

Abstract: A dull coated printing paper that is bulky (low in density) having a density of 0.90 to 1.15 g/cm3 and yet offers excellent pliability, superior surface smoothness, high degree of print gloss and minimal small-scale gloss variations in the image area are obtained by forming a coating layer comprising a pigment and an adhesive on a base paper which contains an organic compound having an action to inhibit binding between pulp fibers and then carrying out calender treatment at a line pressure for the treatment of 50 to 150 kg/cm.

Abstract: A coated printing paper the product of whose basis weight, density, Young's modulus in the machine direction and breaking length in the machine direction is within the range of no less than 1.0×1021g2·N/m6 but not greater than 4.0×1021g2·N/m6, and which offers excellent pliability, superior print gloss in the image area regardless of lower white-paper gloss, minimal small-scale gloss variations in the image area, and excellent workability with the printing machinery, more particularly a matte coated paper, is provided.

Abstract: A paper coating slip containing a mineral pigment and an aqueous polymer dispersion as a binder, wherein the polymer dispersion is obtainable by emulsion polymerization of ethylenically unsaturated compounds (monomers) and the paper coating slip gels at above 35° C., i.e. the viscosity of the paper coating slip at from 35 to 60° C. is at least twice the viscosity at 30° C.

Abstract: A coating device and a coating method are provided. The coating device comprises a coating station for coating a coating liquid on a band-shaped substrate running continuously, and a coat-adjusting station disposed downstream of the coating station for adjusting the coating liquid on the substrate so that the coating liquid layer is coated on the substrate at a predetermined thickness. The coating station and the coat-adjusting station comprise first and second bars for respectively coating and measuring the liquid agent. The coating liquid can be coated on evenly and in a stable manner even if the coating operation is performed with the substrate running at a high speed.

Abstract: Method and apparatus for coating a traveling paper web includes a coater head. The coater head includes an inlet for receiving fresh coating material which is introduced into a mixing chamber. A looped flow path is established within the coater head which includes a feed channel extending from the mixing chamber and leading into a coating chamber where one portion of the coating material proceeds in the direction of the rotating backing roll. The aqueous slurry of coating material near the downstream end of the coating chamber enters a recirculation channel from which it is directed through a plurality of flow metering orifices back into the mixing chamber.

Abstract: A method for printing an image on a surface of a substrate having a surface finish defined by a gloss, the method comprising: printing an image on the surface of the substrate, such that image areas thereof have a thickness, when fixed to the substrate and dry, of less than about 6 micrometers of a thermoplastic material; and smoothing the surface of at least a portion of the thermoplastic material.

Abstract: A system and a method for coating two sides of a laminate material is disclosed in which one side of the laminate material is coated with one substance and the second side is coated with a different substance. The method described is particularly suited for applying a substance providing balancing characteristics desirable in the end product to one side of the laminate material and applying a substance providing other characteristics desirable in the end product to the other side of the laminate material. For example, a balancing substance may be applied on one side of a kraft paper sheet and a substance providing structural bonding applied to the other side, thereby eliminating the need to use a discrete balancing sheet in a laminate. The kraft sheet thus coated may be used to form a laminate panel.

Abstract: A method for the application of liquid through viscid medium onto the surface of a pre-dried material web including the steps of applying a viscid medium to at least one side of the material web, routing the material web through a press nip and supporting the material web substantially without free draw.

Abstract: Structured polyolefin coated substrates and processes for making the same are disclosed. A chill roll is used to impart a plurality of peaks which protrude outwardly from the polyolefin coating of the structured substrate. In addition, the chill roll surface is treated to impart a matte finish and thus to transfer a matte finish to the area surrounding the peaks of the polyolefin coating.

Abstract: A system and a method for coating two sides of a laminate material is disclosed in which one side of the laminate material is coated with one substance and the second side is coated with a different substance. The method described is particularly suited for applying a substance providing characteristics desirable in the manufacturing process to one side of the laminate material and applying a substance providing characteristics desirable in the end product to the other side of the laminate material. For example, a release agent may be applied on one side of a kraft paper sheet and phenolic resin on the other side, thereby eliminating the need to use release sheets in the manufacture of laminates. The kraft sheet thus coated may be used in a laminate product.

Abstract: The invention is directed to a method of magnetically linking a ferromagnetic object to a partially magnetized coating material made by applying a coating to a surface of a continuously-moving medium including the steps of providing a coating material by mixing a binder material suitable for being spread substantially and regularly over the surface and a ferromagnetic component, the binder material being a hot melt adhesive; providing a continuously-moving medium having a top surface to be substantially coated, the surface capable of receiving a substantially and regularly spread coating material; passing the coating material and continuously-moving medium between rollers to form a substantially constant thickness of the coating material substantially covering the top surface and allowing the coating material to set to form the coated medium as a magnetizable component, wherein the medium that is coated is one of a paper, a card, wallpaper, a flexible plastic sheet, a rigid plastic sheet, and walls; partially

Abstract: An improved film coater which utilizes one or more coater or applicators to transfer coating to the outer surfaces of at least one more rolls, which in turn transfers the coating from the roll surface to one or more sides of the web for coating paper is disclosed. The coater or applicator includes a smoothing doctor on the web and downstream of the one or more rolls, and may also utilize humidity from one of steam showers or a humidity enclosure to assist smoothing. The web may run in any direction, but preferably runs upwardly from the roll toward the doctor to reduce “film split” droplets effect. The present invention also reduces the fiber rise and arrange peel pattern on the coated web, resulting in a smooth uniform coated paper.

Abstract: A paper having an improved print quality comprises a paper substrate having a surface with a surface roughness of less than 6 microns and a surface gloss of 5-80% which surface has been coated with a light-weight, low solids content, top coat. The top coat may comprise (i) a rheology modifier/binder component and at least one pigment or (ii) at least one binder coated pigment. The top coat provides a significant improvement to the delta gloss of the so-treated paper.

Abstract: The coating apparatus and method enable the coating liquid having been scraped-off to be reused without doing any one of the fluid adjusting treatment and the filtering treatment, while maintaining the features of the scraping-off type of extrusion coater, which is suitable for obtaining a uniform and extremely thin coating film. The coating head is provided with two slits: a coating slit and a recovering slit, and the excessive coating liquid having been discharged through the coating slit and applied to the web is scraped-off and recovered through the recovering slit.

Abstract: Process for application of a coating medium on a traveling material web that is one of paper and cardboard, the coating medium including at least one of a pasty medium and a liquid medium, wherein the process includes forming a material web in a wet section of a machine for one of paper and cardboard and guiding the material web which is still wet with a traveling, endless, carrier belt during application of a coating medium. The application of the coating medium includes transferring the coating medium from a roll-coating mechanism to at least one transfer belt onto the still wet material web. The coating medium is transferred from a surface of the at least one transfer belt moving in a direction of travel of the material web. The at least one transfer belt is a traveling, endless, air-permeable transfer belt which is guided by rolls. This Abstract is not intended to define the invention disclosed in the specification, nor intended to limit the scope of the invention in any way.

Abstract: Apparatus for forming a paper or board web made from fibers in which the web is treated with calcium hydroxide and then with carbon dioxide gas so as to form calcium carbonate.

Abstract: The present invention relates to use of an alkylhydroxyalkyl cellulose, which has alkyl groups having 1-3 carbon atoms and hydroxyalkyl groups having 2-3 carbon atoms, is free from hydrophobically modifying alkyl groups having at least 4 carbon atoms and has a turbidity point of 50-95° C. The amount of carboxymethyl cellulose constitutes up to 1200 percent by weight of the amount of alkylhydroxyalkyl cellulose. An aqueous coating composition containing a combination of alkylhydroxyethyl cellulose and carboxymethyl cellulose is also described.

Abstract: A coating device for coating a coating solution on a web has a roller and a weir which partially constructs a solution store space. In the solution store space the coating solution is stored. When the web sequentially moves in a direction, the roller rotates and the solution in the solution store space is supplied on the web. Thereby a part of the solution overflows the weir such that another part of the solution may remain on the web to have a constant width in a widthwise direction of the web. A drying device has plural drying zones in which the web is fed after the coating of the coating solution. One of the drying zones is neighbored to the coating device. A top of the plural drying zones is constructed of a blow regulation member so as to confront to the solution on the web. The blow regulation member has holes through which is exhausted a gas evaporated from the layer of the solution on the web.

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 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: The invention aims to provide a method for preparing a composite substrate, which prevents an insulating layer surface from becoming rugged under the influence of an electrode layer, and eliminates a polishing step, whereby the composite substrate is easy to manufacture and ensures high display quality when applied to thin-film light emitting devices, the composite substrate and an thin-film EL device using the same. The object is attained by a method for preparing a composite substrate by successively applying an electrode paste and an insulator paste onto an electrically insulating substrate as thick films to form a composite substrate precursor having a green electrode layer and a green insulator layer laminated, subjecting the precursor to pressing treatment for smoothing its surface, and firing; the composite substrate and an EL device using the same.

Abstract: The invention relates to a substrate coated with an oriented multilayer polymeric film comprising at least two layers of polymer particles oriented along two different directions with respect to one another. Such an oriented multilayer polymeric film has improved flexibility as well as improved gas barrier properties. A method of forming the film on a substrate is also disclosed.

Abstract: Method and assembly for forming a paper or board web and a product made using the method. According to the method, the web (11) is made from fibers and then the web (11) is treated with pigment particles. The web is treated with microscopic pigment particles whose average size is so small as to permit the particles to adhere to each other by van der Waals forces. The particles are transferred to the web and adhered thereto advantageously using an ion-blast technique.

Abstract: A method for metering active ingredient in powder form onto a predetermined area is characterized in that the active ingredient is transferred as electrically charged powder to a roll with the opposite charge, the active ingredient transferred to the roll is transferred to a two-dimensional substrate with an electric charge opposite to the active ingredient, the active ingredient transferred to the substrate is fixed by means of a heat treatment.

Abstract: The present invention concerns a process for coating a web by applying a coating layer comprising pigment particles to the surface of the web. According to the invention, the coating layer is contacted at a preselected stage with a smooth surface, the coating layer is at least partially dried while being contacted with said surface to provide a smooth outer surface of the layer with densely packed particles, and the coating layer is separated from the smooth surface. The smooth surface of the web provided by the invention is ideal for printing or for secondary coating with polymers. Paper and board products according to the invention are easily reclaimed and can be treated in a normal pulper, because they do not contain any metal foils or polymer films.

Abstract: The present invention refers in one embodiment to a method of manufacturing multilayer coated papers and paperboards, but excluding photographic papers and pressure sensitive copying papers, that are especially suitable for printing, packaging and labeling purposes, in which at least two curtain layers selected from aqueous emulsions or suspensions are formed into a composite, free-falling curtain and a continuous web of basepaper or baseboard is coated with the composite curtain, and paper or paperboard thereby obtainable.

Abstract: A method and arrangement using the drive device of a rod coating station to carry axial forces, in which the drive device includes at least a telescopic articulated shaft, at the first end of which is a changeable grooved rod and at the opposite end of which is the shaft of the drive motor. The rotation of the rod creates an axial force, which is cancelled by a counterforce from the articulated shaft side, which is brought to the end of the rod. The counterforce is brought to the rod through the articulated shaft from the drive motor side.

Abstract: A recording sheet provided with a coloring material receiving layer containing inorganic particulates and a water-soluble resin is produced in such a manner that production of such a recording sheet is free from restrictions of the composition and properties of coating solutions as well as restrictions of the conditions of coating operation, the coated surface of the recording sheet produced is of high glossiness, and the production of such a recording sheet is carried out in a stable manner without causing lines and unevenness on the coated surface of the recording sheet produced. A coating is applied on a substrate with a slide coater to form a coloring material receiving layer, the coloring material receiving layer is subjected to drying with a dryer, then another coating is applied on the coloring material receiving layer formed with another slide coater to form a overcoat layer, and finally the coated surface is subjected to smoothing/metering treatment with a smoothing/metering unit provided with a bar.

Abstract: A system and a method for coating two sides of a laminate material is disclosed in which one side of the laminate material is coated with one substance and the second side is coated with a similar or different substance. Reverse roll coating may be used to coat the two surfaces of the sheet of laminate material. The method described is particularly suited for applying a substance providing balancing characteristics desirable in the end product to one side of the laminate material and applying a substance providing other characteristics desirable in the end product to the other side of the laminate material. For example, a balancing substance may be applied on one side of a kraft paper sheet and a substance providing structural bonding applied to the other side, thereby eliminating the need to use a discrete balancing sheet in a laminate.

Abstract: In a coating method, a precoating layer is applied to one surface of a web W laid between a plurality of web guide rollers GR while a leading end surface of an extrusion-type head portion EX is pressed against the one surface of the web. Accordingly, entrained air increasing as the transferring speed of the web becomes higher could be prevented from entering a coating point on a doctor edge surface near an outlet of a slot by the meniscus of coating liquid formed in a slight gap between the front edge surface of the extrusion-type head portion and the one surface of the web approaching there. As a result, the precoating layer having an excessive amount can be applied stably without turbulence at the coating point caused by the entrained air. Further, coating can be done stably in the rod portion by setting the thickness of the precoating layer for a final coating layer and a virtual coating layer.

Abstract: Method and apparatus for fiber-reinforced mats and asphalt coated sheets for use in roofing and water resistant membranes. Mats and sheets according to the invention exhibit superior tensile strength and resistance to wrinkling. The mat aspect of the invention comprises product and method for producing mats comprised of organic matting materials such as cellulose, paper, other wood products, or felt, and reinforcing fibers such as fiberglass, plastics, and other relatively high-strength natural and synthetic fibers, the fibers being incorporated within the matting material during production of the mat. The sheet aspect of the invention comprises product and method for mats of the type described above with added asphalt coatings to improve the water-proofing qualities of the mats.

Abstract: Thickness unevenness of a coating liquid layer in a width direction of a web is adjusted by moving a guide roller at the proximity of a coating rod so as to deliberately provide tension variation in the width direction of the web in purpose of forming the coating liquid layer with a desired thickness on the web by the coating rod.

Abstract: A method for directly forming and finishing a web product is provided. The method includes forming a web on a forming apparatus, continuously transferring the formed web to a conveyor, performing a converting step on the web as the web is continuously supported and advanced on the conveyor, and finishing the web into a product substantially ready for packaging. A system for performing the method is also provided.

Abstract: A method and apparatus of manufacturing a web which is striped with add-on material, comprising: a first slurry supply which forms a sheet of base web and moves the sheet along a first path; a second slurry supply; and a moving orifice applicator operative so as to repetitively discharge the second slurry upon the moving sheet of base web. The moving orifice applicator includes a chamber box arranged to establish a reservoir of the second slurry across the first path, an endless belt having slotted orifices, the endless belt received through the chamber box, and a drive arrangement operative upon the endless belt to continuously move the orifices along an endless path and repetitively through the chamber box. The orifices communicate with the reservoir to discharge the second slurry as bands of add-on material to the base web. The slotted orifices can be spaced apart along the belt and oriented so as to be angled with respect to the travel direction of the belt and parallel to each other.

Abstract: Several paper grades are finished in a supercalender (1) or similar calender types in order to increase the smoothness, gloss and other properties of the paper. According to the invention, the method for producing coated and calendered paper or paper board, comprises steps of coating a sheet of paper or paper board and bringing the sheet containing water to a calender (1), leading the sheet in at least one nip formed by two rolls (18, 19) of the calender (1) and imposing simultaneously heat and pressure on the sheet in the nip in order to treat the surface of the web, whereby also water is removed from the sheet, removing water from the sheet before winding in such an extent that the moisture content of the sheet is adjusted to a value of 4.0% or less, leading the treated sheet to a winder (21), and winding the sheet on a roll.

Abstract: The present invention relates to a process of using steam to achieve simultaneous impregnation and drying of lignocellulosic material to improve the strength of lignocellulosic material and to reduce the number of serial processing steps. The steam may be either indigenously generated by way of a heated press or heated nip, or the steam may be externally applied.

Abstract: The present invention relates to a process of using steam to achieve simultaneous impregnation and drying of lignocellulosic material to improve the strength of lignocellulosic material and to reduce the number of serial processing steps. The steam may be either indigenously generated by way of a heated press or heated nip, or the steam may be externally applied.

Abstract: A method is disclosed for producing a printing ink decorated packaging material. The packaging material heat sealable outer coatings. One or both sides of the packaging material are subjected to corona discharge surface treatment to increase the surface tension. Printing is applied to the treated surface. The packaging material then passes the nip between heated rollers in order to reduce the surface energy of the outer plastic layers. Subsequently, a surface treatment of hydrogen peroxide is applied to the packaging material to sterilize the surface.

Abstract: In a coating method for direct or indirect application of a coating medium onto a moving surface, the amount of coating medium dispensed by an applicator device within a given time period and the actuating force that is exerted on the metering element, in order to achieve a coating layer of a desired coating weight, are altered independently of each other. In a relaxation operation mode, the amount of coating medium applied within a given time period is reduced when the coating weight exceeds a desired value; when the coating weight falls below the desired value, the actuating force exerted on the metering element is reduced. In a contact pressure based operating mode, the amount of coating medium applied within a given time period is reduced when the coating weight exceeds a desired value; when the coating weight falls below the desired value the actuating force exerted on the metering element is increased.

Abstract: A method of forming a finished paper having high gloss while maintaining high bulk, comprising applying on a surface of a base stock at least one layer of a coating formulation comprising a particulate plastic pigment; and passing the base stock through a multi-nip calender device maintained at relatively low roll temperature and nip pressure. The product formed using this coating formulation and process is of high gloss quality, yet maintains a relatively high bulk, in comparison to high gloss papers produced by conventional methods.

Abstract: Disclosed are aqueous, storage-stable, crosslinkable polymer compositions comprising: (a) an aqueous dispersion of a an acrylic polymer component containing certain carbonyl-containing functional-groups; (b) a nitrogen-containing compound having at least two carbonyl-reactive nitrogen groups; and (c) optionally, co-solvents, pigments, fillers, dispersants, wetting agents, anti-foam agents, UV absorbers, antioxidants, biocides, and stabilizers. Such compositions are useful as coatings or binders in coating compositions, or as adhesives.

Abstract: A paper web is smoothened by passing the web through a pre-calender device on a paper machine before the application of a coating. The pre-calender device comprises at least one pair of steel rolls, one of which is heated, and a liquid application device which applies a thin film of water to the surface of the web which contacts the heated roll before the web enters the nip between the rolls. The web is then dried after exiting the nip either by wrapping the heated roll and/or by applying heat externally to the web.

Abstract: In a coating method, a precoating layer is applied to one surface of a web W laid between a plurality of web guide rollers GR while a leading end surface of an extrusion-type head portion EX is pressed against the one surface of the web. Accordingly, entrained air increasing as the transferring speed of the web becomes higher could be prevented from entering a coating point on a doctor edge surface near an outlet of a slot by the meniscus of coating liquid formed in a slight gap between the front edge surface of the extrusion-type head portion and the one surface of the web approaching there. As a result, the precoating layer having an excessive amount can be applied stably without turbulence at the coating point caused by the entrained air. Further, coating can be done stably in the rod portion by setting the thickness of the precoating layer for a final coating layer and a virtual coating layer.

Abstract: An apparatus for application of a liquid or pasty coating medium onto a substrate moving past it, for instance a material web of paper, cardboard or boxboard or an applicator roll, includes a back-up chamber which is bounded on its substrate entrance end by a back-up chamber entrance bounding element and on its substrate exit end by a back-up chamber exit bounding element. The apparatus also includes a feed device for feeding the coating medium. In the applicator according to the invention for achieving a uniform coating application, the feed device, viewed in the direction of travel of the substrate, is arranged before the back-up chamber entrance bounding element.

Abstract: Apparatus and method for coating a moving paper web, in which the web to be coated is first guided to a coating station correctly aligned and a first side of the web is coated with a coat layer. Next, the web is guided upwards from the coating station and the first coat layer is dried using non-contact dryers. From the dryers the web is guided to the next coating station correctly aligned, and the second side of the web is coated with a coat layer, the web is guided upwards from the coating station and the coat layer on the second side of the web is dried using non-contact dryers. When the web is directed from the coating station through the dryers, it is guided non-contactingly by means of air jets such that the web is first non-contactingly turned in the machine direction during drying and next, similarly during drying, towards the level of the coating stations.

Abstract: A paper-based sheet for wallcoverings that is made in a single pass on a standard paper making machine is described. The sheet has a print side and a barrier side and is made from softwood pulp in an amount of about 15% to about 40% by dry weight; hardwood pulp in an amount of about 30% to about 55% by dry weight; and, mineral filler in an amount of about 15% to about 30% by dry weight. A first coating is applied to the print side of the sheet in an amount of about 5 to about 20 gm/m2 dry weight. A second coating is applied to the barrier side of the sheet in an amount of about 2.5 to about 10 gm/m2 dry weight. The advantage is a strong, durable, alkaline wallcovering that is less expensive to produce, and provides a smooth print surface.

Abstract: A paper-based sheet for wallcoverings that is made in a single pass on a standard paper making machine is described. The sheet has a print side and a barrier side and is made from softwood pulp in an amount of about 15% to about 40% by dry weight; hardwood pulp in an amount of about 30% to about 55% by dry weight; and, mineral filler in an amount of about 15% to about 30% by dry weight. A first coating is applied to the print side of the sheet in an amount of about 5 to about 20 gm/m2 dry weight. A second coating is applied to the barrier side of the sheet in an amount of about 2.5 to about 10 gm/m2 dry weight. The advantage is a strong, durable, alkaline wallcovering that is less expensive to produce, and provides a smooth print surface.