Abstract: The invention below relates to a doctor blade device with an elongated doctor blade intended to operate continuously against a roll surface (2) and/or a cylinder surface (20) during scraping or wiping off material (IB) on the surface (20), which doctor blade device (5) comprises a carrier beam (10) adapted to the length of the roll surface or cylinder surface, which carrier beam has a clamping arrangement (4) for the positioning of a carrier part (3), arranged, in a groove in the longitudinal direction, to slidably carry the doctor blade (6), wherein the carrier part (3) comprises a carrier blade (30), a lip means (14) arranged at the carrier blade (30) and a spacer element (12) arranged between the lip means (14) and the carrier blade, wherein the carrier blade (30), the lip means (14), and the spacer element (12) are arranged, along a first long side edge of the carrier blade (30) between them, to form said groove (15) for slidable positioning in the longitudinal direction of the doctor blade (6) by support

Abstract: The invention below relates to a doctor blade device with an elongated doctor blade intended to operate continuously against a roll surface (2) and/or a cylinder surface (20) during scraping or wiping off material (IB) on the surface (20), which doctor blade device (5) comprises a carrier beam (10) adapted to the length of the roll surface or cylinder surface, which carrier beam has a clamping arrangement (4) for the positioning of a carrier part (3), arranged, in a groove in the longitudinal direction, to slidably carry the doctor blade (6), wherein the carrier part (3) comprises a carrier blade (30), a lip means (14) arranged at the carrier blade (30) and a spacer element (12) arranged between the lip means (14) and the carrier blade, wherein the carrier blade (30), the lip means (14), and the spacer element (12) are arranged, along a first long side edge of the carrier blade (30) between them, to form said groove (15) for slidable positioning in the longitudinal direction of the doctor blade (6) by support

Abstract: The invention below relates to a doctor blade device with an elongated doctor blade intended to operate continuously against a roll surface (2) and/or a cylinder surface (20) during scraping or wiping off material (IB) on the surface (20), which doctor blade device (5) comprises a carrier beam (10) adapted to the length of the roll surface or cylinder surface, which carrier beam has a clamping arrangement (4) for the positioning of a carrier part (3), arranged, in a groove in the longitudinal direction, to slidably carry the doctor blade (6), wherein the carrier part (3) comprises a carrier blade (30), a lip means (14) arranged at the carrier blade (30) and a spacer element (12) arranged between the lip means (14) and the carrier blade, wherein the carrier blade (30), the lip means (14), and the spacer element (12) are arranged, along a first long side edge of the carrier blade (30) between them, to form said groove (15) for slidable positioning in the longitudinal direction of the doctor blade (6) by support

Abstract: The invention below relates to a doctor blade device with an elongated doctor blade intended to operate continuously against a roll surface (2) and/or a cylinder surface (20) during scraping or wiping off material (IB) on the surface (20), which doctor blade device (5) comprises a carrier beam (10) adapted to the length of the roll surface or cylinder surface, which carrier beam has a clamping arrangement (4) for the positioning of a carrier part (3), arranged, in a groove in the longitudinal direction, to slidably carry the doctor blade (6), wherein the carrier part (3) comprises a carrier blade (30), a lip means (14) arranged at the carrier blade (30) and a spacer element (12) arranged between the lip means (14) and the carrier blade, wherein the carrier blade (30), the lip means (14), and the spacer element (12) are arranged, along a first long side edge of the carrier blade (30) between them, to form said groove (15) for slidable positioning in the longitudinal direction of the doctor blade (6) by support

Abstract: A dosing device for the application of a coating mix (6) onto a running web, in particular a paper or paperboard web (1), which device comprises a rod (8) that is supported revolvingly over its entire length in a rod cradle (12), and a pressing device (13) acting on the rod cradle and producing a pressure of the rod onto the web (1) and onto the holding-on device (2, 17, 15) of the web, the rod (8) being provided with a wear resistant surface coating (15) with a hardness of about 10 to about 100 according to Shore A. The invention also relates to methods of using said rod, and to said revolving rod.

Abstract: A creping doctor device for the scraping off and creping of a running paper web from a rotating cylinder, comprising a holder device arranged to be able to support a continuous, or divided, longitudinally moveable doctor blade, which doctor blade is arranged to have a length that exceeds at least twice the length of said cylinder and is provided with a scraping surface and a contact line and/or contact surface, which contact line and/or contact surface is intended to bear against the jacket surface of said rotating cylinder at a certain linear load, said doctor blade comprising a supporting part and a wear part that is moveable in relation to the supporting part.

Abstract: A creping doctor device for the scraping off and creping of a running paper web from a rotating cylinder, comprising a holder device arranged to be able to support a continuous, or divided, longitudinally moveable doctor blade, which doctor blade is arranged to have a length that exceeds at least twice the length of said cylinder and is provided with a scraping surface and a contact line and/or contact surface, which contact line and/or contact surface is intended to bear against the jacket surface of said rotating cylinder at a certain linear load, said doctor blade comprising a supporting part and a wear part that is moveable in relation to the supporting part.

Abstract: A dosing device for the application of a coating mix (6) onto a running web, in particular a paper or paperboard web (1), which device comprises a rod (8) that is supported revolvingly over its entire length in a rod cradle (12), and a pressing device (13) acting on the rod cradle and producing a pressure of the rod onto the web (1) and onto the holding-on device (2, 17, 15) of the web, the rod (8) being provided with a wear resistant surface coating (15) with a hardness of about 10 to about 100 according to Shore A. The invention also relates to methods of using said rod, and to said revolving rod.

Abstract: Assembly for blade coating of a travelling web, comprising a blade (6) and a blade holder (7, 10) for said blade. Said assembly is provided with a foil (9) extending along the full length of the blade (6) and attached to the blade along a line or section extending along the blade at position between a free edge of the blade and an opposite edge thereof attached in said blade holder, said foil having a width so as to cover the blade holder on a side thereof facing said web.

Abstract: A device for regulating and cleaning an air port (3) arranged in the wall (2) of a furnace, especially a soda house furnace, comprises a cleaning arrangement (1) and an arrangement (4) for regulating the air flow through the air port, in which an air casing (5) is arranged around the air port on the outer side of the furnace wall, in which a drum (12) is arranged inside the air casing and air-tightly connected to the wall of the air casing located opposite to the furnace wall. An opening defined by at least a cover member (14) of the regulating arrangement and at least one lateral wall of the drum is arranged with a restricted extension in the circumferential direction of the drum so as to achieve an air jet in towards and through the air port (3).

Abstract: Application apparatus for the coating of a travelling web (5), comprising a support roll (3) and a predosage roll (7′), said rolls forming a nip between themselves through which the web is brought to travel, further comprising an application device (21) by which sizing agent or coating agent (13) can be transferred onto the web, and means (19) for final evening of material applied onto the web, characterized in that the application device (21) is designed in such a manner that it transfers directly onto the travelling web (5) said material (13) in a certain excess before entering the nip where predosage is provided before the subsequent and final evening of applied material.

Abstract: Coating blade for applying coating material onto a travelling web (41), particularly coating liquid onto a travelling paper web, comprising a steel band (3), which, along the edge section (7) intended to engage the web (41), is provided with a wear-resistant coating (5). Said coating is constituted by a material which has a hardness according to Shore A of from about 30 to about 80.

Abstract: Creping blade for the detachment of a travelling paper web from a dryer cylinder, said blade having an edge or tip section engaging said cylinder and being constantly hit by the traveling web during its detachment from the cylinder. The invention resides in the improvement of said edge or tip section being provided with a wear-resistant coating on a first part of said edge section hit by the web, the other part of said edge section engaging the cylinder being uncoated or coated with a non-wear-resistant material so that said other part is subjected to sliding wear. A recess is located in the side surface so that the wear land surface that contacts the cylinder remains essentially constant throughout the operative cycle of the blade.

Abstract: Device for the application of a coating composition on a traveling web (17) comprising a transfer roll (5), a support roll (3) cooperating with the transfer roll (5), the traveling web being fed in a nip between said rolls, further comprising a gravure roll (7) intended for the transfer of an adapted quantity of the coating composition onto the transfer roll (5), and a device for passing of the web through said nip, characterized by a blade device (11, 13) for the removal of excess of coating composition from the gravure roll (7), said blade device being arranged in trailing position in relation to the moving surface of the gravure roll (7).

Abstract: Blade holder for creping of a web travelling on a rotating cylinder (2) or for doctoring the surface of the cylinder, comprising a blade (3) directed opposite to the travelling direction of the cylinder (2), a blade carrier (41) for the blade, further comprising a pressure ledge (13) extending along the whole length of the blade and arranged to exert a pressure at or adjacent to the upper longitudinal edge of the blade (3) via pivotable pressure arms (15) evenly distributed along the length of the ledge and arranged on the blade carrier (41) to bring said edge to engagement against the cylinder (2). Each pressure arm (15) is arranged to be individually actuated by a pressure means having a double folded membrane (35) for actuation of the pressure arm (15) by means of a pressure medium.

Abstract: An apparatus for the treatment of components by means of a gas mixture, comprising mainly a first light gas and minor amounts of a second gas being heavier than the first gas, has a treatment chamber (10) in which the treatment occurs and a concentration, and purification device (19, 29, 30) in which the gas mixture is concentrated and purified to increase the concentration of the first gas. The treatment chamber (10) comprises an outlet member (19) provided in an upper part of the treatment chamber (10) and means (14, 15) being arranged to move the gas mixture upwardly and out through the outlet member (19). Said means may comprise an inlet member (14) provided in a lower part of the treatment chamber (10) and arranged to supply additional gas and to admit a laminar inward flow of said additional gas.

Abstract: A device for the coating of a travelling web (7), preferably a paper web, comprising a back-up element (3), a metering means (9) cooperating therewith and intended for the application onto the web (7) across essentially the full width thereof a coating liquid (13), a coating blade (17) positioned downstream of the metering means (9), and means for feeding the web (9) in the nip between the back-up element (3) and the metering means (9) and between the back-up element (3) and the coating blade (17). The device further comprises at least one edge lubricating means (27) which is positioned adjacent to one edge (43) of the web and upstream of the metering means (9), and which is arranged to deposit along said one edge (43) a string of lubricating liquid at least up to a position cross-wise and inwardly of the web adjacent to the margin of the coating liquid (13) when applied, whereby uneven wear of the coating blade (17) is avoided; and a process for the coating of a travelling web.

Abstract: A coating device for one- or two-sided coating of a travelling web includes at least one counter-device and at least one first metering device placed on the opposite side of the web (5) for applying onto said web, in cooperation with said counter-device, a coating agent. The metering device (7) includes an evening or metering member (11) extending across the web over its full width. The evening or metering member is made of a flexible, elongate element (21, 23), the length of said element (21, 23) substantially exceeding the width of the web (5) and being arranged to be fed across the web (5) so that new sections of the element will come into contact with the web to ensure correct evening or metering of the supplied coating agent. The coating device according to the invention can be used for transfer coating as well as direct coating.

Abstract: An apparatus for blade coating of a travelling web, preferably a paper web, comprising means for supporting and feeding of the web and a doctor blade extending across the web and engaging the web along a first long-side thereof for evening out a coating composition applied to the web and a blade holder carrying the blade along a second long-side, characterized by pressure means arranged to bring, by applying pressure from an outer side of the blade and adjacent to the first long-side, the first long-side of the blade to engagement on the web without imparting substantial bending to the blade as seen in its cross section, said blade being movably clamped in the blade holder; a process for evening the coating of such a traveling web using such an apparatus.