Abstract:
The invention relates to a doctor or coater blade (1) of steel, having a nickel coating comprising abrasion resistant particles, said coating being constituted by an electrolytic nickel layer comprising abrasion resistant particles. The coating preferably comprises at least two electrolytic nickel layers having different composition, and may be formed differently in different sections of the blade. The invention also relates to a continuous process for electrolytic nickel coating in at least one electrolytic cell holding an electrolyte liquid comprising at least one nickel salt, and in at least one of these cells also comprising abrasion resistant particles.
Abstract:
A self-adjusting blade for engagement with a moving work surface, comprising a steel strip elongated in a first direction between first and second sides, said strip having an edge section along said first side for contact with said work surface, and said edge section being hardened to a hardness exceeding that of the remaining part of said strip. The self-adjusting blade is provided with a coating of a low wear resistance material covering substantially all of said edge section at least on the part thereof contacting the work surface.
Abstract:
A self-adjusting blade for engagement with a moving work surface, comprising a steel strip elongated in a first direction between first and second sides, said strip having an edge section along said first side for contact with said work surface, and said edge section being hardened to a hardness exceeding that of the remaining part of said strip. The self-adjusting blade is provided with a coating of a low wear resistance material covering substantially all of said edge section at least on the part thereof contacting the work surface,
Abstract:
An apparatus for coating an article where the apparatus includes an applicator, a conveyor for sequentially transporting a plurality of articles to the roller and a metering bar positioned against the applicator to meter a predetermined amount of coating composition to the applicator for transfer to an article transported to said applicator by the conveyor.
Abstract:
A polymeric printing member for use in a printing machine is provided. The polymeric printing member-includes a substrate and a coating applied to the substrate. The coating is applied to the substrate by rotating the substrate about its longitudinal axis and applying the coating from an applicator to the substrate in a spiral pattern in a controlled amount so that substantially all the coating that exits the applicator adheres to said substrate.
Abstract:
A doctor blade includes at least one row of openings extending across at least 10% of the blade width in an area representing the actual working width of the blade. The openings begin at a distance between 3 and 35 mm from the working edge of the blade. The openings may be formed as perforations, slots, or notches.
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).
Abstract:
The doctor device has a profile member pivotally mounted to a retaining member that is carried on a mount. Vertical movement of the mount causes angular displacement of the profile member thereby changing the material applicaton area disposed adjacent and upstream of the doctor. The doctor is either a doctor blade or roll doctor. In the case of a roll doctor, a receptacle is formed in the profile member and the roll doctor is magnetically retained with the receptacle. During application of a material to an application surface with the roll doctor, the roll doctor is magnetically attracted to the application surface by a second magnetic device located beneath the application surface or work surface.
Abstract:
A squeegee device is used for applying materials of varying viscosities, such as coating substances, varnishes and adhesives to an application surface. The squeegee is pressed onto the application surface by a magnetic force. A profile member houses the squeegee and is pivotably supported by a bearing. The bearing allows the squeegee and profile member to be tiltable along an axis that is perpendicular to the longitudinal axis of the squeegee or profile member in order to insure a tilting-free and bending-free adjustment of the squeegee on the application surface.
Abstract:
A device for the regulation of the wet application weight of coated webs, the web being supported on its uncoated side by a roll. The device has a stationary, inherently rigid wiping device with a concavely curved long entrance flank so that between web surface and wiping device a sickle-shaped entrance gap is formed. The radius of curvature of the entrance flank of the wiping device is equal to or only slightly greater or smaller than that of the support roll. In order to avoid wear and tear at the edge of the wiping device additional wear elements are provided at the wiping device.