A method for metering a liquid or pasty product in a pressure-regulated manner, has the following steps: metering the product into a mixing chamber using a metering pump; ascertaining a product pressure of the product according to the mixing chamber; ascertaining a deviation of the product pressure from a specified target pressure; and opening or closing a pressure regulating valve provided on an outlet nozzle of the mixing chamber based on the pressure in order to equalize the product pressure and the target pressure, wherein the product pressure is reduced when the pressure regulating valve is opened and increased when the pressure regulating valve is closed.

Disclosed is an apparatus (10) for the application of a liquid to viscous medium (42) onto an application surface (53), comprising a port (14) for providing a connection between the apparatus (10) and a supply of said liquid to viscous medium (42) upstream of the apparatus (10), at least two volumetric delivery pumps (23) for metering volumes of said medium, said volumetric delivery pumps (23) being located downstream of said port (14), each volumetric delivery pump (23) being in fluid connection with an application valve (25) of the apparatus (10), located downstream of the volumetric delivery pump (23) for passing a metered volume of the medium (42) from the delivery pump (23) to said application valve (25). It is characteristic that the apparatus (10) comprises a flow meter (13) in fluid connection with said volumetric delivery pumps (23), which flow meter (13) is located upstream of said volumetric delivery pumps (23).

A method includes receiving a model of the material dispenser and, at a first characterization period of a material bead dispensing operation, communicating, to the material dispenser, a first characterization flow rate input. The method also includes, at a second characterization period of the material bead dispensing operation, communicating, to the material dispenser, a second characterization flow rate input. The method also includes generating, using at least one sensor, three-dimensional data associated with a material bead corresponding to the material bead dispensing operation. The method also includes characterizing at least one parameter of the model of the material dispenser using at least the first characterization flow rate input, the second characterization flow rate input, and the three-dimensional data associated with the material bead.

A substrate processing apparatus includes a processing tank, a holder, an organic solvent supply, a drainage port, a gas supply, and an exhaust port. The processing tank stores an aqueous layer. The holder holds a substrate. The organic solvent supply supplies an organic solvent onto the aqueous layer to form a liquid layer of the organic solvent. The drainage port discharges the aqueous layer from a bottom wall of the processing tank and causes the liquid layer of the organic solvent to descend from above the substrate to below the substrate. The gas supply supplies a gas of a water repellent agent to the liquid layer from above the processing tank while the liquid layer descends. The exhaust port is exposed on a side wall of the processing tank by the descending of the liquid layer and discharges the gas of the water repellent gas.

A hot melt adhesive system includes an adhesive supply for receiving solid or semi-solid hot melt adhesive, and a heater associated with the adhesive supply for melting the solid or semi-solid hot melt adhesive into liquid hot melt adhesive. An adhesive tracking system monitors an output of the liquid hot melt adhesive, and includes a flow meter having a flow inlet and a flow outlet. The flow meter measures an amount of the adhesive flowing out of the flow outlet. A product detector may be used to sense a presence of a product to which the adhesive is applied. A controller then determines the total amount of the liquid adhesive dispensed and the average amount of liquid adhesive dispensed per product.

A method monitors a device for applying an at least two-component viscous material to workpieces, including a metering unit having a number of metering valves corresponding with the number of viscous material components, and a static mixer detachably secured to the metering unit for component blending. The static mixer has a material inlet facing the metering unit and a material outlet facing away from the metering unit. Each metering valve has a supply channel sealingly connectable to a valve seat for supplying the respective component to the static mixer. A number of material applications are carried out consecutively, each having an identical predetermined time between start and end of the application. During the applications, between the start and the end, at predetermined times, the pressure in at least one supply channel is measured by a pressure sensor and preferably measured in all supply channels by a respective pressure sensor.

A discharge device capable of suppressing pressure fluctuation of a compressed gas supplied to a container in which a liquid material is stored. The device includes a storage container in which a liquid material is stored; a discharge port through which the liquid material is discharged; a pressure control valve that adjusts a pressure of a compressed gas supplied from an external compressed gas source to a desired level; a discharge valve that establishes or cuts off communication between the pressure control valve and the storage container; a control device that controls operation of the discharge valve; a first flow line connecting the pressure control valve and the discharge valve; and a second flow line connecting the discharge valve and the storage container. The device further includes a third flow line branched from the first flow line, and a leak mechanism connected to the third flow line.

An apparatus for dispensing a liquid comprising: a supply flow path; a pressurised liquid source arranged to supply pressurised liquid to the supply flow path; a junction downstream of the pressurised liquid source, wherein at the junction the supply flow path is branched into a dispense flow path and a return or drain flow path; and a valve or pump in the return or drain flow path downstream of the junction.

An adhesive dispenser is includes a plurality of adhesive dispensing parts, each including an adhesive dispensing tube, an adhesive extrusion assembly, and a driving component. The adhesive dispensing tube is configured to carry an adhesive therein. The adhesive extrusion assembly is connected with the adhesive dispensing tube, and is configured to apply a pressure to the adhesive in the adhesive dispensing tube such that the adhesive is dispensed from the adhesive dispensing tube. The driving component is configured to drive adhesive extrusion assemblies of the plurality of adhesive dispensing parts to apply the pressure to the adhesive.

An embodiment coating system for a secondary battery includes a supply tank connected to a slot-die and configured to store a slurry, an in-line viscometer configured to measure viscosity and temperature of the slurry, a flow meter configured to measure a flow rate of the slurry, a flow rate adjustment valve configured to adjust the flow rate according to a feedback signal based on the measured flow rate, a coating bead sensor configured to detect in real time a slurry coating bead shape discharged from the slot-die to a base material, and a coating controller configured to detect a process condition change event by monitoring a slurry property and the slurry coating bead shape in real time and to control the flow rate of the flow rate adjustment valve based on reference data corresponding to a changed slurry property.