Abstract:
A substrate treatment apparatus includes: a substrate holding unit which horizontally holds a substrate; a substrate rotating unit which rotates the substrate held by the substrate holding unit about a vertical axis; a treatment liquid supplying unit which supplies a treatment liquid to an upper surface of the substrate held by the substrate holding unit; an opposing member to be located in opposed spaced relation to the upper surface of the substrate held by the substrate holding unit in contact with a film of the treatment liquid formed on the upper surface of the substrate so as to receive a lift force from the liquid film; a support member which supports the opposing member; and an opposing member holding mechanism which causes the support member to hold the opposing member in a vertically relatively movable manner.
Abstract:
A metering rod assembly including a body for accommodating a metering rod insert and configured to clamp the metering rod and/or metering rod insert without the use of an auxiliary clamping device, such as a pressure tube or the like. A rod bed insert is supported in a tapered channel of a body whereby a clamping action is created during use. In another embodiment, the body includes a hinge portion that facilitates relative rotation between upper and lower jaws to create a clamping action during use.
Abstract:
A device for applying a free-flowing medium to a continuously conveyed web, wherein the medium can be transferred to the web by a continuously rotating transfer (gravure) roll. An application head is provided in order to transfer the free-flowing medium to the circumference of the gravure roll. The application head includes a chamber which is open toward the circumference of the gravure roll and has an inlet and an outlet for the medium to be applied. The front outer face, in the direction of rotation, of the chamber is delimited by a front doctor blade and the rear outer face, in the direction of rotation, is delimited by a rear doctor blade. Both doctor blades are seated against the circumference of the gravure roll. The front doctor blade can be pressed against the circumference of the gravure roll by a pressing body with an adjustable pressing force.
Abstract:
A method and apparatus are described for controlling a coating head, which exerts a nip pressure to a fibrous web to be coated while the fibrous web is supported by a backing roll. An output signal of a sensor integrated within the backing roll is read, thus producing a measured indication of the nip pressure. A number of actuator control values are derived at least partly from said measured indication of the nip pressure. Said actuator control values are delivered as commands to a number of respective actuators that contribute to creating the nip pressure, to control an amount of a coating substance on the fibrous web in the coating head.
Abstract:
A composite doctor blade to be installed in a blade holder (11) containing a throat (15) has a rear part (14) made of a composite material which has a profiling (16) which protrudes beyond the plane (18) defined by the doctor blade in order to retain the doctor blade in the blade holder (11). At a distance from the rear part (14), part (17) of the profiling (16) protrudes from the plane (18) to one side only. Moreover, the part (17) is higher than its width in the cross-sectional plane of the doctor blade.
Abstract:
A beam construction, particularly a so-called doctor beam, for use mainly in pulp and paper mills to carry blade holders (7) intended to hold doctor blades. The beam (1) is a composite-construction hollow beam, which also includes at least one composite construction pre-tensioning rod (9, 10, 12). The construction has an essentially triangular cross-section.
Abstract:
An injection molded keep is disclosed that includes a thermoplastic material and a reinforcement material. The keep is positioned adjacent a top plate in a doctor blade holding apparatus and provides a slot opening between the keep and the top plate for receiving an end of a doctor blade in the slot opening.
Abstract:
Equipment for changing a blade (43) in a coating device (51) changes several blades (43) arranged in a band (43). The equipment includes reels (11, 40) connected to the ends of the blade holder (45), for holding the reeled unused and used band (43); transfer devices (13, 20) for moving the band (43) in connection with the blade holder (45), and lifting devices (17) for lifting the band (43) up and lowering it into the blade holder (45). Indentations (44) at least the length of the hollow shaft (52) are arranged at regular intervals on the band (43), and are arranged to permit the blade (43) to be lowered into the blade holder (45).
Abstract:
A treatment equipment, which is intended to be installed in connection with a moving surface. The treatment equipment includes a frame and a blade holder formed from composite material as a single piece and connected to the frame. In addition, a blade is fitted to the blade holder, the bevelled edge belonging to which is arranged to be brought into contact with the moving surface by moving the blade holder. In the blade holder, there is also a separate backing blade, which is fitted at one edge into the blade holder, the other edge extending closer than the blade holder to the said bevelled edge.
Abstract:
A doctor for the application of fluent material to a substrate (8), such as a material web has a pressing part (3) extending in the longitudinal direction of the application apparatus (application width), which comprises a working edge (30) passing over the application width (7), an actuator on the pressing part (3) along the working edge (30) and movable by means of a magnetic field, comprising at least one electromagnet and/or permament magnet (20), which together with the pressing part (3) forms a pressing unit (4).