초록 ▼

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 p

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.

대표청구항 ▼

[ What is claimed is:] [1.] A system usable for dispensing fluids including hot melt adhesives, supplied from a reservoir, onto a substrate, the system comprising:a plurality of fluid dispensing nozzles;a fluid metering device having a plurality of metered fluid outlets for supplying fluid from the

[ What is claimed is:] [1.] A system usable for dispensing fluids including hot melt adhesives, supplied from a reservoir, onto a substrate, the system comprising:a plurality of fluid dispensing nozzles;a fluid metering device having a plurality of metered fluid outlets for supplying fluid from the reservoir;a plurality of fluid supply conduits, each fluid supply conduit interconnectable between a metered fluid outlet of the fluid metering device and a corresponding fluid dispensing nozzle;a plurality of fluid recirculation conduits, each fluid recirculation conduit interconnectable between a corresponding fluid supply conduit and one of the reservoir and fluid metering device; anda plurality of one-way pressure relief valves, each pressure relief valve disposed between a corresponding fluid supply conduit and one of the reservoir and fluid metering device,each pressure relief valve independently recirculates fluid from the corresponding fluid supply conduit to a corresponding fluid recirculation conduit when pressure in the corresponding fluid supply conduit exceeds a threshold pressure, whereby fluid is recirculated toward one of the reservoir and the fluid metering device.