Abstract:
A new and improved remote, hot melt adhesive metering station (510), for supplying predetermined or precisely metered volumes of hot melt adhesive material toward applicator head or dispensing nozzle structures, comprises a plurality of rotary, gear-type metering pumps (518) which are arranged in a compact, longitudinally spaced manner upon an axially elongated drive gear manifold (512) such that the rotational axes of the plurality of rotary, gear-type metering pumps (518) are disposed parallel and adjacent to one side of the axially elongated drive gear manifold (512). Hot melt adhesive material is supplied from a remotely located adhesive supply unit (ASU), to the drive gear manifold (512), by an inlet supply port hose connection (542), and all of the pump driven gears (524) of the plurality of rotary, gear-type metering pumps (518) are respectively driven by manifold pump drive gears (514) which are all rotatably mounted upon a common, motor-driven drive shaft (516) rotatably disposed within the drive gear manifold (512). The drive gear manifold (512) is also provided with a plurality of outlet port hose connections (540) to which hot melt adhesive delivery hoses are to be connected.
Abstract:
A hot melt adhesive metering pump assembly, and an integral reservoir tank fluidically connected thereto and the hot melt adhesive metering pump assembly comprises a plurality of rotary, gear-type metering pumps which are arranged in a compact, longitudinally spaced manner upon a drive gear manifold. All of the driven gears of pumps are respectively driven by manifold pump drive gears which are rotatably mounted upon a common motor-driven rotary drive shaft rotatably disposed within the drive gear manifold, and a first side wall member of a base portion of the reservoir tank is integrally connected to a side wall portion of the drive gear manifold, while a second side wall member of the base portion of the reservoir tank is provided with a plurality of hose connections to which hot melt adhesive delivery hoses are to be connected so as to respectively convey the precisely metered amounts of the hot melt adhesive material toward the applicator heads.
Abstract:
A spreading head particularly for spreading one or more adhesives or mixtures of adhesives, of the hot-melt or cold type, comprising a body which has two or more ducts, which are all separate or of which two or more converge, each duct being connected to one or more feed channels for conveying the one or more adhesives or mixtures of adhesives to one or more extrusion chambers formed on the upper surface of the body; an abutment element for the one or more adhesives or mixtures of adhesives which exit from the one or more mixing chambers is associable in an upper region with the body.
Abstract:
An apparatus for forming phosphor layers on a display panel includes a base plate on which a display panel is placed. The base plate is inclined at an adjustable angle. The display panel, having a panel plate and barrier ribs formed on the panel plate is placed on the base plate. A spray unit includes a nozzle assembly for spraying a slurry containing phosphors into spaces between the barrier ribs. A charged unit for exerting electrostatic force on the phosphors is positioned adjacent to the display panel. The apparatus enables rapid formation of uniform phosphor layers on a display panel with the phosphor particles located adjacent to the surfaces of the phosphor layers.
Abstract:
A dispensing unit for a hot melt adhesive system has a manifold centrally located within the dispensing unit to permit commonality between heated hoses of substantially the same length used to supply adhesive guns at either side of the dispensing unit. The dispensing unit also includes a manifold that is thermally isolated from the adhesive tank. The manifold has a heater that is independent of the tank heater for more precise temperature control of adhesive flowing through the manifold. A pump coupled to the manifold is located external to the tank and is heated by the manifold heater.
Abstract:
A vacuum overspray controller reduces or eliminates the overspray incident to the non-contact spray application of a coating material onto a moving, porous substrate. The vacuum assisted overspray controller exposes a first surface of the porous substrate to a vacuum pressure via one or more orifices in its peripheral surface. As a result, particles of coating material that would otherwise contribute to the overspray instead are preferentially received and retained by the second surface of the porous substrate.
Abstract:
A system usable for dispensing fluids including hot melt adhesives, supplied from a reservoir, onto a substrate. The system includes a plurality of fluid dispensing nozzles coupled to a fluid supply conduits disposed in a main manifold wherein fluid is supplied from a fluid metering device. An air preheater module is mountable to the nozzles and provides heated air for controlling the fluid dispensed by the nozzles. The main manifold includes a plurality of recirculation conduits each disposed between a fluid supply conduit and the fluid reservoir. A one-way valve disposed along each recirculation conduit conditionally recirculates fluid toward the fluid reservoir. A variety of recirculation manifold configurations are interchangeably mounted to the main manifold for recirculating fluid toward the fluid reservoir. Fluid pressure gauges monitor pressure in individual fluid supply conduits, or alternatively an average fluid pressure. The fluid metering device is mountable in a well in the main manifold, wherein a common heating member heats both the main manifold and the fluid metering device.
Abstract:
A system usable for dispensing fluids including hot melt adhesives supplied from a reservoir onto a substrate. The system includes a fluid metering device having a plurality of metered fluid outlets for supplying fluid from the reservoir, a main manifold having an end portion with plurality of fluid outlet ports coupled to corresponding metered fluid outlets of the fluid metering device, and a corresponding plurality of fluid return ports coupled to the reservoir. At least one individual fluid flow control plate having a plate fluid inlet port on a plate fluid interface is mountable on the end portion of the main manifold to couple the plate fluid inlet port of the individual fluid flow control plate to a corresponding one of the plurality of fluid outlet ports of the main manifold. The individual fluid flow control plate includes a plate fluid outlet port coupled to the plate fluid inlet port by a plate fluid flow conduit for either recirculating back to the main manifold or directing the fluid to a fluid dispensing nozzle.
Abstract:
Disclosed are a substrate treating apparatus and a substrate treating method. According to an embodiment of the inventive concept, the purge operation of the purge nozzle is performed while the nozzle arm is moved from the first substrate support member to the second substrate support member, it hardly influences the operation of treating the substrate while the nozzle arm is moved from the first substrate support member to the second substrate support member. According to an embodiment of the inventive concept, the substrate treating apparatus may perform an operation of purging the photosensitive liquid nozzle while the treatment liquid supply unit performs a process of supplying the photosensitive liquid to the substrate. Accordingly, because the operation of purging the photosensitive liquid nozzle is performed at the same time when the substrate treating apparatus performs a process, productivity may be improved.
Abstract:
A metering device (4, 82, 96) for metering a fluid includes a common supply line (6) and multiple discharge lines (20). To improve the metering process, the metering device (4, 82, 96) includes multiple delivery devices (18) each having a cavity (24) for receiving the fluid and a piston (26) for displacing the fluid, wherein each of the multiple delivery devices (18) is connected on the inlet side to the common supply line (6) and is connected on the outlet side to one of the multiple discharge lines (20).