Abstract: A method for producing a fiber web (W) in which method the fiber web (W) is calendered in at least one nip (NA) of a calender (20A). The fiber web (W) is cooled at least partially by moisturizing evaporating cooling by a moisturizing evaporating cooling unit (10) before the fiber web is calendered and moisture is absorbed during 10-500 ms. A production line for producing fiber webs (W) has a calender (20A) with a calendering nip (NA). The production line for fiber webs, in particular board webs, has a fiber web machine (50), in particular a board machine, with a head box, a wire section, a press section and a drying section, and at least one moisturizing evaporating cooling module (10), and a hard nip calender (20A) with a thermo roll, which has a surface temperature at least 120° C., and a reel-up (40).

Abstract: A recording media containing a raw base wherein said media encompasses, on its image side, a pigmented pre-coating layer and a non-polyolefin barrier coating and, on its backside, a polymeric barrier layer. Also disclosed is a method of making such recording media and methods of forming photographic printed images on said recording media.

Abstract: An exemplary embodiment provides a device of moving a low ignition propensity cigarette paper which includes an air moving body portion having a curved surface, an inlet injecting air, and a plurality of outlets disposed at the curved surface to discharge the air, in which the low ignition propensity cigarette paper having a coating portion is floated and turned by the air discharged from the plurality of outlets.

Abstract: Apparatuses are disclosed that include forming selected perforation designs and patterns. The perforation designs and patterns can be formed in linear or nonlinear fashion, can extend in the cross direction or the machine direction and can be formed to complement or match an embossed or printed design on the web. The perforation designs and patterns can be formed utilizing various mechanical perforating techniques.

Abstract: A method for inhibiting deposition of multivalent saturated fatty acids on paper sizing equipment and/or devices which use a paper surface sizing composition containing higher starch solids levels of surface sizing starches and a source of multivalent cations, such as a multivalent metal drying salt, by including (wholly or partially) one or more low fatty acid surface sizing starches in the paper surface sizing composition. Also, a paper surface sizing system for carrying out this method.

Abstract: Method of manufacturing a hygiene paper product in form of a continuous paper web (W)of sheets partly separated by perforation lines (9) and wound to a log of predetermined longitudinal length, providing a continuous paper web (W), moving the continuous paper web in a direction of its longitudinal extension, providing at least one embossed pattern on the continuous paper web, providing in the area of an embossing station at least one mark (6, 7) onto the continuous paper web, which mark (6, 7) is in register to the embossed pattern, sensing the mark and controlling perforating means for registering the perforation lines (9) with the embossed pattern thereby imparting perforation lines to the continuous paper web in predetermined longitudinal distances, winding up the resulting web to logs, and cutting the log into rolls.

Abstract: A method for inhibiting deposition of multivalent saturated fatty acids on paper sizing equipment and/or devices which use a paper surface sizing composition containing one or more surface sizing starches and a source of multivalent cations, such as a multivalent metal drying salt, by including a C16 or higher saturated fatty acid solubilizing and dispersing surfactant in the paper surface sizing composition. Also, a paper surface sizing system for carrying out this method.

Abstract: For decades books and other paper documents have been deteriorating in archives and libraries around the world because the acidity of the paper is increasing so much (wherein the pH decreases) that the paper cellulose is decomposing so that the paper loses its cohesion and thereby degenerates in terms of quality. The invention relates to an improved method for de-acidifying paper. The invention also relates to a device for applying such a method.

Abstract: A method for guiding web patching, using a re-reeler, in connection with a paper machine and an off-line coating machine, in which method a defect map of the web is created on the paper machine, to show deviations some of which are shown on the coating machine, using selected criteria, to the operator, the deviations being patched using the re-reeler, guided by the defect map and preset patching rules. On the coating machine, the virtual location of the selected deviations is monitored through the coating machine and if a possible web break occurs, a deviation is localized relative to the web break, and on the basis of this monitoring, feedback is provided to the patching rules of the re-reeler, in order to optimize them.

Abstract: A planar element for use in a papermaking machine comprising a synthetic construction incorporating nanoparticles in a polymeric resin matrix.

Abstract: Apparatus for dampening fibrous material using the alternating pressure process with an airtight and vapor-tight housing (1), with a vacuum line (6), wherein a first directional valve (7) is provided in the vacuum line (6), the housing (1) has at least one closable opening (2, 21, 23) for loading and unloading the housing (1) and a ventilating line (11), and wherein a third directional valve (12) is provided in the ventilating line (11).

Abstract: A composition is provided, which comprises a water-soluble salt of a divalent metal; a complexing agent having an affinity for the divalent metal; and an optical brightening agent. Methods of using the composition, and recording sheets which include the composition, are also disclosed.

Abstract: This device for applying a moistening liquid to a paper web includes a liquid applicator roller (44, 46) for applying the moistening liquid (38) on the paper web (18). The liquid applicator roller includes an application surface (60), and is characterized in that the application surface (60) is formed of a material capable of creating a corona effect on the paper web by discharge of static electricity between the surface and the paper web (18). Application to paper web dryers of rotary offset presses.

Abstract: A system and method for applying de-dusting agents to fibrous mats, webs, and/or blankets requiring a lower usage of the de-dusting agents, and producing fibrous products having improved dust suppression are disclosed. The dedusting agent or agents are first reduced to very fine particles or droplets and then, in an air suspension, are passed through the fibrous mat, web and/or blanket to deposit the very fine particles or droplets onto the surfaces of the fibers.

Abstract: Web to be formed into wrapping paper is applied with combustion inhibitor and then dried. Water is applied onto the entire surface of the opposite side to the combustion-inhibitor applied side of the web. The web applied with water is dried while pinched between drying and pressing rollers and stretched in a width direction. In this way, unwrinkled high-quality cigarette wrapping paper having a low ignition propensity can be stably and inexpensively manufactured. As the pressing roller, a heat-resistant rubber roller provided in its surface with a soft portion in a helical way is utilized.

Abstract: [Problem] It provides a sheet forming machine which can make the thickness in the width direction of a sheet forming body be uniform, and also can obtain a sheet forming body which is integrated in stripe shapes by using different raw materials or raw materials of different colors in the width direction of one sheet forming body.

Abstract: An apparatus for making blind slats includes: a feeding unit adapted to feed a pulp fiber web; an impregnation tank containing an impregnating liquid for impregnating the pulp fiber web; a conveying roller assembly disposed within said impregnation tank for immersing and conveying the pulp fiber web through the impregnating liquid; and a thermal forming unit for thermal forming the pulp fiber web that has been impregnated.

Abstract: The invention relates to an apparatus to produce coated paper, cardboard or other fibrous webs with at least one thermo-sensitive layer as a functional layer through the application of at least one liquid or paste-like thermo-sensitive coating medium onto a carrier web by way of a unit which forms a functional layer, the units each include at least one applicator device and one drying section following the applicator device. The two units are capable of being installed in series and each form at least one functional layer on the carrier web, whereby in the merging area between the two functional layer forming units a web turning device is located, creating a first web path and a device to bypass the web turning device, thus creating a second web path for the carrier web between the two functional layer forming units. The invention further relates to a method to operate an apparatus of this type.

Abstract: A method for inhibiting deposition of multivalent saturated fatty acids on paper sizing equipment and/or devices which use a paper surface sizing composition containing higher starch solids levels of surface sizing starches and a source of multivalent cations, such as a multivalent metal drying salt, by including (wholly or partially) one or more low fatty acid surface sizing starches in the paper surface sizing composition. Also, a paper surface sizing system for carrying out this method.

Abstract: A method for inhibiting deposition of multivalent saturated fatty acids on paper sizing equipment and/or devices which use a paper surface sizing composition containing one or more surface sizing starches and a source of multivalent cations, such as a multivalent metal drying salt, by including a C16 or higher saturated fatty acid solubilizing and dispersing surfactant in the paper surface sizing composition. Also, a paper surface sizing system for carrying out this method.

Abstract: A method for producing an article made of a web material, comprising at least one ply, wherein a superabsorbent material in powder form is associated with said ply.

Abstract: A system and method for applying de-dusting agents to fibrous mats, webs, and/or blankets requiring a lower usage of the de-dusting agents, and producing fibrous products having improved dust suppression are disclosed. The dedusting agent or agents are first reduced to very fine particles or droplets and then, in an air suspension, are passed through the fibrous mat, web and/or blanket to deposit the very fine particles or droplets onto the surfaces of the fibers.

Abstract: An apparatus for making blind slats includes: a feeding unit adapted to feed a pulp fiber web; an impregnation tank containing an impregnating liquid for impregnating the pulp fiber web; a conveying roller assembly disposed within said impregnation tank for immersing and conveying the pulp fiber web through the impregnating liquid; and a thermal forming unit for thermal forming the pulp fiber web that has been impregnated.

Abstract: Devices, systems and methods for controlling the coating of a sample are disclosed. The exemplary system may have a manufacturing device for providing a sample with one or more sample characteristics associated with one or more coating characteristics. The exemplary system may have a sample sensor for determining the one or more sample characteristics and a manufacturing controller for controlling the manufacturing device and controlling the one or more characteristics of the sample provided by the manufacturing device based on the determined one or more sample characteristics. The exemplary system may also have a coating device for providing coating to the sample with the one or more coating characteristics; a coating sensor for determining the one or more coating characteristics; and a coating controller for controlling the coating device and controlling the one or more characteristics of the coating provided by the coating device based on the determined one or more coating characteristics.

Abstract: Apparatus for dampening fibrous material using the alternating pressure process with an airtight and vapour-tight housing (1), with a vacuum line (6), wherein a first directional valve (7) is provided in the vacuum line (6), the housing (1) has at least one closable opening (2, 21, 23) for loading and unloading the housing (1) and a ventilating line (11), and wherein a third directional valve (12) is provided in the ventilating line (11).

Abstract: This device for applying a moistening liquid to a paper web comprises a liquid applicator roller (44, 46) for applying the moistening liquid (38) on the paper web (18). The liquid applicator roller comprises an application surface (60), and is characterized in that the application surface (60) is formed of a material capable of creating a corona effect on the paper web by discharge of static electricity between the surface and the paper web (18). Application to paper web dryers of rotary offset presses.

Abstract: The paper web is passed on the production line between at least one pair of rollers, of which one is of soft material driven at greater speed, the hard material roller presenting a base roughness RA of less than 5 and along its entire lateral surface having incisions that are precisely spaced.

Abstract: The invention relates to a paper machine for producing paper that can be gravure printed from a fibrous stock suspension, and a related method. The paper machine includes a wire section, a pressing section, a drying section, and a winding section for winding the produced paper on a paper roll. Additionally, the paper machine includes a film press having a film roll for applying a coating color and a calender arranged downstream of the film press.

Abstract: Information (particularly, water content) of a sheet material which changes during progression of processing is estimated with higher accuracy and information output or (image formation) processing is performed. The water content estimation method of the present invention includes: detecting a first information regarding moisture contained in a sheet material; detecting a second information regarding a factor affecting information regarding the moisture contained in the sheet material; predicatively computing an estimation of a water content of the sheet material based on the first information and the second information; and adjusting processing conditions for image formation based on the estimation of the water content which is computed.

Abstract: The present invention simplifies the equipment in an on-machine coater in which a size press and a post-metering style of coater are alternatively used. In an on-machine coater including a size press 3, an air turn 4 arranged diagonally downward on the downstream side of the size press 3, a post-metering style of coater 6 arranged in the downstream side of the air turn 4, and non-contact dryers 11 arranged above the coater 6, when the coating is performed using the size press 3 the two surfaces of a web A are dried by a pair of the non-contact dryers 11 opposingly provided about the diagonally upward-moving web A on the downstream side of the air turn 4. When the coating is performed using the post-metering style of coater 6, the dryer of the pair of non-contact dryers 11 used to dry the lower surface side of the web A is moved in such a way as to oppose the lower surface side of the web A which, beyond the coater 6, moves upward.

Abstract: In web/ink-jet operations in which ink jet data is over-printed on forms prepared by offset litho, undesirable interactions between the surface size and litho-fountain are controlled by use of a PCC basesheet having a size press coating of starch and alum, the alum amount being at least 0.75% by weight.

Abstract: Paper machine for producing paper that can be gravure printed from a fibrous stock suspension, and a related method. The paper machine includes a pressing section having at least one press nip, an impingement dryer arranged immediately after the pressing section, and an applicator. The applicator applies a coating color in the manner of at least one of a curtain application, a film application, or a spraying application.

Abstract: Methods for producing cast-coated papers showing a reduced level of curling and reduced curling or wavy deformation caused by moisture absorption or other reasons as well as showing a high surface quality in the cast-coated surface. The steps for producing cast-coated papers include applying a coating color based on a pigment and an adhesive on one side of a base paper, and pressing/drying the coated layer in the wet state against a casting drum mirror surface, where moisture is added to the coated paper by passing it through conditioned air at a high temperature and a high humidity (for 20 seconds or more) after pressing/drying the coated layer against a casting drum.

Abstract: A method and a device for treating a web, wherein the web is coated by a coating device. The coated web is calendered, and a steam application device applies steam to the coated web before the coated web is calendered. The instant abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.

Abstract: The invention relates to an apparatus to produce coated paper, cardboard or other fibrous webs with at least one thermo-sensitive layer as a functional layer through the application of at least one liquid or paste-like thermo-sensitive coating medium onto a carrier web by way of a unit which forms a functional layer, the units each include at least one applicator device and one drying section following the applicator device. The two units are capable of being installed in series and each form at least one functional layer on the carrier web, whereby in the merging area between the two functional layer forming units a web turning device is located, creating a first web path and a device to bypass the web turning device, thus creating a second web path for the carrier web between the two functional layer forming units. The invention further relates to a method to operate an apparatus of this type.

Abstract: An arrangement for the production of a wood-free coated, matte or semi-matte paper web including at least one precalendering apparatus for precalendering the paper web, at least one coating apparatus and at least one dryer. The coating apparatus is configured to apply a liquid and/or a pasty application medium to the paper web. The dryer is configured for drying the paper web.

Abstract: An applicator device (1) applies surface size to at least one side of a web (W). A pressure effect is applied to the web (W) by subjecting the web (W) to an underpressure and/or to an overpressure such that surface size is forced to penetrate into the pores of the web. Most advantageously, an underpressure is created that sucks applied surface size from the surface of the web (W) into the pores in the inner layers. Surface size is applied to a web first side (W1) and a vacuum effect is applied to the web's opposite side (W2) to cause air to flow through the web (W) such that surface size moves from the first side (W1) in the direction of the second side (W2) into the web (W). Correspondingly, both sides of the web (W) can be treated in successive stages.

Abstract: Machine for the production/processing of a material web, in particular a fibrous web, for example of paper or board, which comprises at least one treatment section in which the material web can have a treatment fluid applied to it, the treatment section being connected or able to be connected to a treatment fluid source via at least one line connection, an elastically deformable compensating material arranged in a fluid holding chamber of the treatment fluid source or of the treatment section. Alternatively, a damping device may be connected to the line connection or arranged in the latter and/or delimits such a fluid holding chamber, and/or elastically deformable compensating material which, in at least one section of the line connection, defines or co-defines an effective line cross section.

Abstract: A composition for treating paper products comprising protein particulate, colloidal pigment, synthetic latex polymer, and preservative is described, as well as methods and an apparatus using the composition for such treatments, and products obtained thereby. The treated paper products preferably have improved strength, water holdout, and/or ink holdout, amongst other advantages and benefits.

Abstract: A piezo nozzle system can be used in a paper machine. Contrary to all expectations, piezo nozzle systems have proven to be particularly suitable for use in the extreme ambient conditions of a paper machine. Despite the high degree of humidity, the use of piezo nozzle systems allows a high degree of control and dynamics to be achieved when using controlled or regulated valve devices in a paper machine. Furthermore, the use of piezo nozzle systems ensures a high availability and stability of the valve devices while having a robust and extremely compact design.

Abstract: A method and an arrangement for the impregnation of untreated chips during the manufacture of chemical pulp. The untreated chips are fed without preceding steam treatment into an impregnation vessel (10) that comprises an upper part (11) with a first area and a lower part (13) with a second area A2 that is larger than the first area A1 by a factor of at least r2. The chips establish in the upper part (11) a level (14) of chips that is located at a level (h) above a level (18) of fluid consisting of liquor. The chips after passage of the upper part (11) pass through a transitional part (12), where an increase in area from the first area (A1) to and it is here that the angle of repose of the chips is reduced.

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 machine for producing and treating a web of material including a material web forming device, a dewatering and drying section, at least one application apparatus, a drying device and a processing device. The material web forming device forms a material web continuously from a supplied fibrous suspension. The dewatering and drying section is arranged along a material web path after the material web forming device. The section extracts water from the web by way of at least one of thermal and mechanical action. The at least one application apparatus is arranged along the material web path after the dewatering and drying section. The apparatus applies liquid or pasty application medium to at least one side of the web. The drying device is arranged along the material web path after the application apparatus. The drying device dries the moving material web to a final drying state. The processing device is arranged along the material web path after the drying device.

Abstract: A method for manufacturing a web of paper and paperboard, in which method a spray-coating technique is used for applying a web treatment substance to at least one surface of a moving web. The qualities of the web treatment substance are selected such that at least the droplet size and viscosity of the web treatment substance are controlled such as to make the thickness of the applied web treatment substance essentially equal in at least two randomly selected sample areas. According to the invention, the applied coating conforms with the surface contour of the base sheet. A paper manufactured using the method.

Abstract: Method and arrangement for processing a paper or board web (1) or similar fibre web, in which method a processing mixture is spread onto the surface of the web. hi the method, the web (1) to be processed is lead from a press nip (8) and pressed between rolls (8) in this nip. Before the web enters the nip, such an amount of processing mixture is spread onto at least one side of the web (1), that the processing mixture is still wet when it enters the nip.

Abstract: An arrangement in the on-line finishing of a paper machine, which includes at least one finishing stage (12, 13) for the paper web produced, has cutting equipment (16) for forming the tail as well as tail threading equipment (15) for carrying the tail through the finishing stage (12, 13). At the end of the finishing stage (12, 13) there is a draw point (24), through which a carrier rope system (17) included in the tail threading equipment (15) is adapted to pass. The draw point (24) is formed between one cylinder (28) and a wire (29) arranged in contact with it for forming a single-contact draw point.

Abstract: A method for producing an article made of a web material, comprising at least one ply, wherein a superabsorbent material in powder form is associated with said ply.

Abstract: The apparatus has a feed apparatus (10) and an evening-out apparatus (100) placed underneath the feed apparatus. The feed apparatus (10) has a feed chamber (12) with an inlet opening (13a), an outlet opening (13b), and a nozzle plate (18) with holes (19) and communicating with the outlet opening (13b) of the feed chamber. The evening-out apparatus (100) has at least one inclined surface (110) which forms a downwards sloping flow path (L1) for the treating agent. Jets discharge from the feed chamber (12) outlet opening (13b) through the nozzle plate (18) holes (19) to form a first treating agent flow (F1). One inclined surface (110) of the evening-out apparatus (100) receives the first treating agent flow (F1) and a second treating agent flow (F2) formed into an even laminar treating agent flow on the flow path (L1) of the evening-out apparatus (100) is passed onto a moving surface (200).

Abstract: A paper or paperboard web (W) is precalendered. A web that has undergone earlier dewatering stages is calendered to attain a suitable surface for the coating process. The web is calendered (C) one-sidedly in such a manner that the absorption level of the second side (W2) of the web entering the calendering, which is higher than the absorption level of the first side (W1), is reduced in the calendering nearly to the same level or at least to the same level with the first side (W1).

Abstract: The specification discloses a waterbox for applying an aqueous mixture, such as a starch mixture, to a web in a calender stack. The waterbox includes a spillway disposed adjacent a calender stack having a bottom plate, substantially parallel front and rear walls, and substantially parallel first and second end walls. The waterbox also includes an elongate lip for which extends from adjacent the front wall of the reservoir to a position adjacent a roll of the calender stack to form a pond area. A weir is provided for controlling the amount of mixture in the pond. Additionally the waterbox includes an inlet or a plurality of inlets for introduction of mixture into the pond area located below the pond level.