Method for uniform coating of a composition onto a carrier material in web form, through the use of a coating apparatus comprising at least one element A, that forms with a further element B a nip ahead of which the composition is held up, and that moves relative to the element B in such a way that a rotating body of composition is developed and the composition is conveyed into the nip; comprising introduction of the composition into the intake region of the nip, the application of the composition to a carrier material in web form in the nip or after the composition has travelled through the nip, and which limits the longitudinal extent E of the nip intake region fully fillable by the body of composition.

A manufacturing apparatus of a coating film product rolls a mixture coating material by a first roll and transfers the mixture coating material to a coated object in motion to thereby manufacture the coating film product. An arithmetic average roughness Ra on a roll surface of the first roll is higher than a value 0.05 times of a particle size d10 in which an integrated distribution of particle sizes of particles included in the mixture coating material is 10% and lower than a value 20 times a particle size d90 in which an integrated distribution is 90%.

A coating device includes: a rotatable coating bar that is arranged inside a container having a coating fluid inlet and an upper opening; a plurality of pairs of rotatable supports that are arranged intermittently along the longitudinal direction of the coating bar, and that support the coating bar from below; and a weir that is located close to the outer periphery of at least the support. The positional relationship between the support and the weir is determined such that, if a line that connects the shaft center of the support and a point which is the end edge of the weir and which is closest to the support is defined as a straight line and if a point where the straight line intersects with the outer periphery of the support is defined as an intersection point, a straight line that is perpendicular to the straight line and that passes through the midpoint of a line segment does not intersect with the coating bar.

An adhesive application apparatus is provided. The apparatus uses a rolled on adhesive applied to a substrate. After roll application, an adhesive activator is sprayed onto the substrate. By spraying an activator onto the substrate after the adhesive is applied, the adhesive may be made tacky for adhesion, but the adhesive used for rolling may be highly stable and slow to dry/cure without said activator, which enhances rolled application effectiveness.

A unit for spreading an adhesive onto a moving film, includes at least one pair of abutments (11) upon which is mounted a first pick-up roller (12) for collecting a quantity of adhesive from a collection zone (13), a second roller (14) that rotates in contact with the first roller (12), intended to receive the quantity of adhesive, and a third roller (15) that rotates in contact with the second roller (14), wherein the abutments include at least one fixed portion (19) and one moving portion (20, 21) that can be firmly connected to the fixed portion, the moving portion being configured: to house a tank (17) in which the adhesive collection zone is found, or to house an additional fourth roller (18) positioned at a given distance from the first roller, the collection zone being located in the upper space between the first and the fourth roller (12, 18).

An electrode plate manufacturing method of the present disclosure uses an electrode plate manufacturing apparatus including: a first roll and a second roll facing each other at a first position; and a third roll facing the second roll at a second position, and the manufacturing method rotates the first to the third rolls, feeds an electrode material at the first position, and brings a current collecting foil to pass through the second position. The electrode plate manufacturing apparatus includes: a flow passage roll having a flow passage thereinside and an outer circumferential surface disposed to be in contact with an outer circumferential surface of at least one of the first roll, the second roll, and the third roll; and a circulating unit circulating a fluid through the flow passage. The circulating unit circulates the fluid through the flow passage of the flow passage roll during manufacturing the electrode plate.

A process for continuous manufacturing of steel strips for packaging coated with a passivation layer is provided. The layer is an aqueous passivation solution, the thickness of which is less than 3 m and the viscosity of which is less than 1.5.Math.10.sup.3 Pa.Math.s at 20 C., and is deposited on one of the faces of the strip. This depositing is carried out by a transfer roller in contact with the strip and with a second coating roller, the surface of which has a plurality of hexagonally shaped cells, the line count of which is between 50 and 200 lines per centimeter, and the total volume of which is between 5.Math.10.sup.6 and 10.Math.10.sup.6 m.sup.3 per square meter of roller surface. The coating roller is fed with aqueous passivation solution by dipping in a tank equipped with wiping means and the strip runs at a speed greater than or equal to 400 m/m. An apparatus for implementation of the process is also provided.

An adhesive-spreading assembly includes a plurality of rollers (R), that rotate in contact with one another to transfer a thin layer of adhesive from a tank (T) onto a film in motion, complete with a device for cleaning the rollers (R), removably connectable to the adhesive-spreading assembly and including at least one tank (5, 6) containing at least one cleaning fluid and pumping elements (8) for transferring the fluid to distributor elements (12) for delivering a part of the fluid onto the surface of the rollers (R). The adhesive-spreading assembly includes a transfer system (15) designed to transfer the distributor elements (12) in a direction substantially parallel to the axis of the rollers to distribute the fluid over their whole surface, the transfer system being configured so that it can be removably coupled with the distributor elements.

Examples include a device for coating a carrier substrate with a powdered material. The device includes an application unit having a first roller and a second roller which, at a nip thereof, form a first gap through which a powder mixture can be conveyed to form a dry film. A counter-pressure roller, together with the second roller or another roller arranged between the counter-pressure roller and the second roller, forms a second gap through which the carrier substrate to be coated can be guided for having the dry film applied to the carrier substrate. The first gap between the first and second rollers can be adjusted based on a position-based positioning drive by being set to a constant and/or defined gap width, and the second gap can be adjusted based on a force-based positioning drive, and can be set to a constant and/or defined contact force or linear force.

Embossing unit comprising a fixed structure (1) and a mobile structure (2) configured to be moved to and from the fixed structure (1), a first embossing assembly (LA), a second embossing assembly (UA) and a gluing assembly (GA), wherein the first embossing assembly (LA) comprises a first engraved steel roller (3) and a respective rubber counter-roller (4), wherein the second embossing assembly (UA) comprises a second steel engraved roller (5) and a respective rubber counter-roller (6), and wherein the gluing assembly (GA) is mounted on the mobile structure (2). The first embossing assembly (LA) and the engraved roller (5) of the second embossing assembly (UA) are mounted on the fixed structure (1) while the rubber counter-roller (6) of the second embossing assembly (UA) is mounted on the mobile structure above the gluing unit (GA).