A method for coating a material web (2), in particular a fibrous web, by way of a coating device. The coating device (1) has an application unit (3) for applying a coating medium to the material web. The application unit is arranged in the interior of an enclosure (4), which has first opening for the entry of the material web and a second opening for the exiting of the material web. In the interior of the enclosure there is produced a positive pressure greater than the ambient pressure outside the enclosure during the coating so that air flows from the interior of the enclosure to the outside (5b) of the enclosure through the first opening and/or the second opening.

The present inventions relate to an improved paint booth for drying water-based and solvent-based coatings applied to a vehicle. The paint booth provides a flash cycle for drying water-based coatings. The paint booth has an enclosure in which the vehicle may be placed, the enclosure having intake and exhaust outlets for an airflow. The paint booth also has one or more blower assemblies, the one or more blower assemblies for supplying the airflow in the intake. Each of said one or more blower assemblies includes a blower and a first three-phase AC motor. The first AC motor being controlled by a variable frequency drive controller. The paint booth also has one or more exhaust fan assemblies, the exhaust fan assembly including a fan and a second three-phase AC motor. The second AC motor is controlled by a variable frequency drive controller. All of the at least one exhaust fan assemblies provide an airflow substantially equal to the airflow provided by the one or more blower assemblies with a slightly positive pressure in the enclosure during drying. Each of the controllers controlling the AC motors use lower frequencies to provide the desired airflow through the enclosure through the intake and exhaust outlets at no more than 85% of the maximum power output.

The present inventions relate to an improved paint booth for drying water-based and solvent-based coatings applied to a vehicle. The paint booth provides a flash cycle for drying water-based coatings. The paint booth has an enclosure in which the vehicle may be placed, the enclosure having intake and exhaust outlets for an airflow. The paint booth also has one or more blower assemblies, the one or more blower assemblies for supplying the airflow in the intake. Each of said one or more blower assemblies includes a blower and a first three-phase AC motor. The first AC motor being controlled by a variable frequency drive controller. The paint booth also has one or more exhaust fan assemblies, the exhaust fan assembly including a fan and a second three-phase AC motor. The second AC motor is controlled by a variable frequency drive controller. All of the at least one exhaust fan assemblies provide an airflow substantially equal to the airflow provided by the one or more blower assemblies with a slightly positive pressure in the enclosure during drying. Each of the controllers controlling the AC motors use lower frequencies to provide the desired airflow through the enclosure through the intake and exhaust outlets at no more than 85% of the maximum power output.

Provided are a cleaning method and cleaning device for cleaning with micro/nano-bubbles, with which a simple method of spraying a treatment solution containing micro/nano-bubbles onto a substrate to be processed makes it possible to efficiently and reliably peel off residual resist or remove contaminants from the substrate, while reducing an environmental load. This cleaning method is characterized in that, with respect to a substrate to be treated to which a resist film has adhered onto the substrate or a substrate to be treated to which the surface thereof has been contaminated with a metal or metal compounds, the resist film is peeled off or the metals or metal compounds are removed by spraying onto the substrate to be treated a treatment solution containing gaseous micro/nano-bubbles and having a temperature maintained at 30 C. to 90 C., the mean particle size of the micro/nano-bubbles when measured by an ice embedding method using a cryo-transmission electron microscope being 100 nm or smaller, preferably 30 nm or smaller, and also preferably the density of such bubbles being 10.sup.8 or more bubbles per 1 mL.

An apparatus and a method are used for controlling an air conditioning system for automotive body painting to regulate temperature and humidity in a paint booth based on difference between enthalpy of outside air and enthalpy of supply air. The apparatus includes a first temperature sensor measuring temperature of outside air, a first humidity sensor measuring humidity of outside air, a second temperature sensor measuring temperature of supply air, a second humidity sensor measuring humidity of supply air, and a controller calculating first enthalpy based on the temperature and humidity of the outside air, calculating second enthalpy based on the temperature and humidity of the supply air, and controlling the air conditioning system to regulate the temperature and humidity of the supply air when difference between the first enthalpy and the second enthalpy is below or exceeds a reference enthalpy range.

An apparatus and a method are used for controlling an air conditioning system for automotive body painting to regulate temperature and humidity in a paint booth based on difference between enthalpy of outside air and enthalpy of supply air. The apparatus includes a first temperature sensor measuring temperature of outside air, a first humidity sensor measuring humidity of outside air, a second temperature sensor measuring temperature of supply air, a second humidity sensor measuring humidity of supply air, and a controller calculating first enthalpy based on the temperature and humidity of the outside air, calculating second enthalpy based on the temperature and humidity of the supply air, and controlling the air conditioning system to regulate the temperature and humidity of the supply air when difference between the first enthalpy and the second enthalpy is below or exceeds a reference enthalpy range.

A paint booth assembly includes a paint booth having a pair of side walls and a flood sheet extending between the pair of side walls to separate the paint booth between a spray portion disposed above the flood sheet and a paint recovery portion disposed below the flood sheet. The flood sheet defines at least one flood sheet opening, and a scrubber unit extends down from the flood sheet opening to establish a shared path of fluid communication of a flow of water from the flood sheet and a downdraft of process air from the spray portion to the paint recovery portion. A scrubber pod is disposed within the scrubber unit and defines a plurality of perforations to induce an initial mixing of the paint particles entrained in the downdraft of process air into the flow of water.

A spray containment system for a wing-body section includes a forward module, a center module, and an aft module. The forward module has a forward closeout panel configured to engage a forward end of a fuselage center section of the wing-body section. The center module has opposing module side panels each configured to engage a wing lower surface of a wing of the wing-body section. The aft module has an aft closeout panel configured to engage an aft end of the fuselage center section. The forward module and the aft module are independently movable and are configured to be assembled around the wing-body section to define an internal environment that is sealed from an external environment for containing contaminants including at least one of vapors, overspray, and liquids generated during application of one or more of coatings, sealants, and adhesives to localized areas of the wing-body section.

A spray containment system for a wing-body section includes a forward module, a center module, and an aft module. The forward module has a forward closeout panel configured to engage a forward end of a fuselage center section of the wing-body section. The center module has opposing module side panels each configured to engage a wing lower surface of a wing of the wing-body section. The aft module has an aft closeout panel configured to engage an aft end of the fuselage center section. The forward module and the aft module are independently movable and are configured to be assembled around the wing-body section to define an internal environment that is sealed from an external environment for containing contaminants including at least one of vapors, overspray, and liquids generated during application of one or more of coatings, sealants, and adhesives to localized areas of the wing-body section.

There is provided an energy recovery device for recovering energy from exhaust air which flows through a discharge line. The energy recovery device includes a heat exchanger device having at least a first heat exchanger unit and a heat pump, wherein the heat pump is connected at the high-temperature side thereof to the first heat exchanger unit and is arranged at the low-temperature side thereof in the exhaust air flow in the exhaust air flow direction downstream of the first heat exchanger unit or is connected at the low-temperature side thereof to a second heat exchanger unit which is connected downstream of the first heat exchanger unit in the exhaust air flow direction.