A system for coating a continuous sheet (1), having an application roller (10) for applying a coating on the sheet (1) when the sheet (1) is pressed against the application roller (10) by an application pressure element (11), a smoothing roller (20) for smoothing the coating applied on the sheet (1) by contact of the smoothing roller (20) with the coating when the sheet (1) is pressed against the smoothing roller (20) by a smoothing pressure element (21), the application (11) and smoothing pressure elements (21) being independently movable in order to press the sheet (1).

A doctor blade, intended for a doctor blade chamber (6) for a flexography printing unit (1) equipped with a screened cylinder (4), presents in the form of a rectangular blade, with a functional longitudinal side (34) of which a longitudinal edge is capable of making contact with the screened cylinder (4), a longitudinal fastening side (33) and two lateral sides (36, 37). The doctor blade comprises at least one opening located towards the functional longitudinal side (34) and towards the first of the two lateral sides (36, 37).

Technologies and techniques for the dry manufacture of an electrode. A substrate is provided, and a primer material is dispensed on the substrate to provide a primer layer on the substrate, dispensing an electrode material on the primer layer and attaching the electrode material via pressure and/or temperature to provide an electrode material layer.

Roller coater (1) for applying paint to mainly flat panels (8), comprising, in the direction of conveying of panels: a feed roller (9), preferably coupled to a contrast roller (39); an application head for applying paint, comprising an applying roller (3) and a dosing roller (11), said applying roller being preferably coupled to a contrast roller (33); a conveyor (12) for the panels (8) to be painted, preferably in the form of a closed belt conveyor;

characterized in that said applying head (9) is covered by its own cover (5), said application head is covered by a preferably vertical cover (2) and a preferably horizontal cover (6), which covers are removable, said applying roller being rotatably mounted on rotation supports (15) placed at its two ends, which are disengageable from said applying roller, said applying roller being withdrawable from its working position and distanceable from said working position in the application head through a withdrawing path providing an initial translation for disengaging it from its rotation supports in the direction of the feed roller (9) and a successive translation in a lifting direction, i.e. distancing it from said conveyor (12), there being provided a lifting member of said roller, preferably coupleable to the ends of said applying roller, the interaxis distance between said feed roller (9) and said applying roller (3) is at least equal to the length of the initial translation path for disengaging the applying roller from the rotational supports (15), and lower to the minimal length of the panels paintable with said roller coater (1).

A method for manufacturing a positive electrode for a secondary battery includes unwinding a positive electrode base material, transferring the positive electrode base material to a first coating unit through a plurality of rollers, coating an insulating material at predetermined positions on opposite sides of the positive electrode base material with respect to a transfer direction of the positive electrode base material to form insulating portions, drying the insulating material to form insulating portions, coating a positive electrode slurry between the insulating portions on the opposite sides of the positive electrode base material, and drying the positive electrode slurry to form a positive electrode film formed with a positive electrode portion on the positive electrode base material.

Systems and methods for coating a thin film with a viscous material, such as a liquid, a paste, or an adhesive, at a desired thickness. In such a system, two films move adjacent to one another, optionally in opposite directions, atop two rollers separated by a known gap that defines a coating thickness, with the material being transferred from one film to the other. The rollers may be maintained in their relative positions by springs and/or linear actuators and positioned using linear encoders. In alternative arrangements, the material to be coated could be low viscosity material such as a polymeric solution. Air knives may be provided near the gap to create an air flow that aids in preventing the free flow of low viscosity materials outside the bounds of the film during coating.

A painting method and a painting apparatus for a band material that prevent a printing defect during a long-time operation by preventing agglomeration and adhesion of a thixotropic paint in a paint pan is disclosed. The liquid paint is discharged to the paint pan as a jet flow from a level lower than a liquid surface of a paint basin toward a bottom of the paint pan, thereby creating a bottom flow along the bottom of the paint pan and an upward vortex from the bottom along a side wall of the paint pan. The liquid paint overflows in an amount corresponding to a supplied amount to the paint pan from a front upper edge of the paint pan in a flowing direction of the bottom flow, thereby flowing the liquid paint continuously in the paint pan toward the front upper edge.

Methods and apparatuses for applying coatings on a baggy web are provided. A Mayer rod and a back-up roll engage with each other to form a nip. The back-up roll has a deformable inner layer with a surface thereof covered by a deformable outer layer. The Mayer rod and the flexible web at a contacting area are impressed into the back-up roll with a machine-direction nip width W and a nip engagement depth D, which enables formation of a coating having a substantially uniform thickness.

A lamination method, includes: a first coating step of applying any one of a main agent M and a curing agent H of a two-component curable adhesive as a coating liquid to a first web W1; a second coating step of applying the other one of the main agent M and the curing agent H as a coating liquid to a second web W2; and a bonding step of bonding a coating liquid-coated surface of the first web W1 and a coating liquid-coated surface of the second web W2, and of combining the main agent M and the curing agent H to increase a molecular weight. In addition, in the first coating step and the second coating step, the main agent M or the curing agent H is applied by a gravure coater.

A gravure coater test apparatus includes a gravure roll and a backup roll which are circumscribed to each other, a motor which drives the gravure roll partially submerged in a water-based pressure-sensitive adhesive for coating, a controller which adjusts the rotational speed of the motor, a doctor blade which is selected from a plurality of types to scrape the water-based pressure-sensitive adhesive from the surface of the gravure roll being rotated, and an infrared analyzer which allows at least one of the type of the water-based pressure-sensitive adhesive corresponding to the selected doctor blade, the uniformity of the coating surface, and the amount of the coated water-based pressure-sensitive adhesive to be confirmed.