Controlling application of adhesive on a substrate includes using a gas sensor, obtaining a first sensor signal. The first sensor signal indicates a partial pressure of a gas that arises from a constituent of the adhesive. Based at least in part on this partial pressure, the controller either controls an applicator's delivery of the adhesive to a substrate or causes an error signal indicative of the adhesive's unsuitability for adhesion.

There is disclosed a selective wetting apparatus (2) comprising a roller (20) rotatable about a roller axis (24) and comprising a wettable roller surface (22); an applicator unit (10) having a lip (12) which extends parallel to the roller axis (24) and is radially spaced apart from the roller surface (22) by a gap (30), wherein the applicator unit (10) is to convey liquid agent (14) towards the roller (20) so that the liquid agent (14) forms a liquid bridge (32) over the gap (30) to wet a wettable axial portion of the roller surface (22); and a flow guide (50) to direct a gas flow (56) into a regulated axial portion of the gap (30) to locally prevent formation of a liquid bridge (32), and thereby prevent wetting of a corresponding axial portion of the roller surface (22).

A substrate lift bar includes: an outer lift bar which is in shape of a box structure and includes one surface having an opening; an inner lift bar which is able to be accommodated in the outer lift bar and includes a supporting surface used for supporting a substrate; an elevator structure for controlling the inner lift bar to move up and down to change from a first state to a second state and back again; and an anti-static liquid smearing structure for smearing an anti-static liquid onto the inner lift bar if the inner lift bar is in the first state. In the first state, the inner lift bar is completely located inside the outer lift bar, and in the second state, the supporting surface of the inner lift bar is substantially flush with the surface having the opening of the outer lift bar.

The disclosure provides a transfer plate pre-processing device. The transfer plate comprises first and second surfaces, and recesses in an array are arranged on the first surface. The transfer plate pre-processing device comprises: a cylinder having a bearing surface that can be attached to the second surface of the transfer plate and to support the transfer plate; and a pressurization structure having a pressurizing surface. The cylinder can roll along the pressurizing surface, and when the cylinder is rolling, the first surface of the transfer plate is brought into contact with and pressed against pressurizing surface. Accordingly, the disclosure also provides a transfer plate pre-processing method and an alignment film preparation system. According the disclosure, the wettability of the transfer plate can be improved.

A powder-rubbing apparatus comprises: a rotatable rubbing roll having a rotational axis; a substrate path; an oscillating mechanism for oscillating the rotatable rubbing roll along the rotational axis; and a powder coating die comprising an inlet port in fluid communication with an outlet port disposed adjacent to the substrate path. The substrate frictionally contacts the rotatable rubbing roll within a rubbing zone. A dispenser for dispensing gas-borne powder is in fluid communication with the inlet port of the powder coating die. The dispenser is aligned such that at least a portion of a gas-borne powder dispensed from the powder coating die is deposited directly onto at least one of the rotatable rubbing roll or the substrate and conveyed into the rubbing zone. A method of using the powder-rubbing apparatus and a powder-rubbed web preparable thereby are also disclosed.

The invention relates to a device for applying a hot-melt to a web of material. The device includes a driven roller and a nozzle with a nozzle channel arranged adjacent the driven roller for supplying a hot melt through the nozzle channel to the surface of the roller. The invention also relates to a combination of a device according to the invention and a web of material, which web of material is guided along the driven roller and wherein the nozzle channel exits in front of the nip of the web of material and the driven roller.

A device coats one or more panels, printed by a coating means, which applies particularly a varnish or a primer. The device utilizes a forme roller which can be brought into rolling contact with the print stock to be coated, in the region of a contact zone, in order to coat the print stock on a side of the print stock facing the forme roller, and also utilizes a feed device supplying the forme roller with coating medium, which interacts, in the region of at least one contact zone on the circumference of the forme roller, with the forme roller, in order to continuously apply the coating medium, which is to be applied to the print stock, to a shell surface of the forme roller to an application width. A removal device, having removal elements, is associated with the forme roller and by the use of which removal device, the coating medium previously applied continuously to the shell surface, over the application width via the feed device, can be removed from the shell surface, before a downstream delivery to the print stock, which removal is, in one or in a plurality of partial width sections, relative to the application width, synchronized to one of a machine and a print stock phase position for one of defined and definable phase lengths. A method for coating and a printing press having a coating device are also disclosed.

A tandem system of metering and donor rolls is used to apply two different adhesives to a fully adhesive backed multilayer sheet to produce variably distributed adhesives and properties. Each of the two adhesives is unique and is cured differently to create a layer of adhesive that has differing adhesive properties on the sheet. A clear adhesive is applied to a top portion of cards before they are cut from the sheet and has a higher tackiness than the adhesive applied to the rest of the cards on the sheet in order to reduce glue buildup on blades cutting the cards from the sheet.

An apparatus for coating a donor surface that is movable relative to the apparatus with a layer of metallic particles or particles having a metal-like appearance and reflectivity, the particles adhering more strongly to the surface than to one another. The apparatus comprises an application device to apply to the donor surface a fluid stream within which the particles are suspended, a housing surrounds the application device forming an interior plenum for confining the fluid stream, the housing prevents egress of particles from a sealing gap defined between the rim of the housing and the surface to be coated, and a suction source connected to the housing to extract from the plenum excess fluid and particles. In operation, the suction source extracts substantially all particles that are not in direct contact with the donor surface, leaving substantially a single particle layer adhering to the donor surface upon exiting the apparatus.

Adhesion of particles having a large particle size contained in the slurry to a surface of a strip member is suppressed. A slurry application method includes: spraying a slurry from a nozzle onto one or both of a traveling strip member and a roll; and applying the slurry to a surface of the strip member by pressing the roll against the surface of the strip member, wherein a spray angle is set to 0 or more and 50 or less, a distance d in a conveyance direction of the strip member between an intersection point P1 and a rotation center P2 of the roll is 100 mm or less, and a height h from the surface of the strip member to the intersection point P1 is or less of a diameter of the roll.