Glossary
10-3
Part 237478_03
E 2012 Nordson Corporation
The adhesive or thermoplastic material dispensed by the hot melt system.
The applicator, hose(s), gun(s) and timing mechanism.
A system that regulates flow rate in proportion to the substrate (line) speed.
A device that shows the level of material in a tank, reservoir or hopper.
A device that converts applied voltage to light. LEDs appear as colored
lights that indicate operating conditions.
See Level Indicator.
The device that distributes fluid and/or air.
The highest cycle rate of the gun that produces a repeatable pattern.
The maximum adhesive flow rate achievable without exceeding any
operating limits. The maximum pumping rate is measured at the manifold
outlet. The rate is based on an adhesive with a given viscosity.
The rate at which a material can be melted continuously on a long‐term basis
while maintaining the output fluid temperature within a desired temperature
band. Commonly expressed in units of grams/minute, grams/hour, lb/min or
lb/hr.
The extrusion tip, the point at which the adhesive exits the gun. The nozzle
controls the adhesive stream's volume, shape and direction. Nozzles may
have single or multiple orifices.
The time after adhesive is applied during which a serviceable bond can be
made. Many factors affect open time, including temperature, substrate, the
adhesive used and the amount of adhesive applied.
The pressure at which the pump and/or guns are operated. See product
specifications.
The range of temperatures in which the specific material or adhesive in use
functions satisfactorily in a particular application.
A product feature that shuts down the unit or produces an alarm when
temperatures are outside a specified band.
Hot Melt Material
Hot Melt System
Key‐to‐line
Level Indicator
Light Emitting Diode (LED)
Low Level Indicator
Manifold
Maximum Operating Gun
Speed
Maximum Pumping Rate
Melt Rate
Nozzle
Open Time
Operating Air Pressure
Operating Temperature
Range
Overtemperature Protection
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