| |
 |
| |
|
| Hot melt |
| |
|
|
Adhesives provide
a low-cost, effective method for joining various
substrates. Applied by either a dispenser,
spray nozzle, or hand held gun, an adhesive
joint offers better stress distribution, superior
fatigue resistance, and greater strength over
traditional bonding methods.
|
| Industry Challenge |
| The most common concern facing
adhesive users is uneven spraying or dispensing.
Reciprocating pumps, such as diaphragm or
piston pumps, produce a flow that varies in
both pressure and volume. To compensate, additional
adhesive must be applied to sufficiently coat
the target areas. Over-spraying and over-dispensing
cause excessive material waste and increased
manufacturing costs. |
| Other concerns when applying
hot melt adhesives are high viscosity, high
operating temperature, and pump accuracy.
The viscosity of hot melt adhesives is generally
about 500 poise with operating temperatures
ranging from 300 to 400°F. Pump accuracy
is critical when dispensing precise amounts
of adhesive to a specified area. |
| The Zenith Solution |
| The pump of choice for dispensing
hot melt adhesives is typically a positive
displacement gear pump. This high precision
pump must offer the capability of pumping
high viscosity fluids and be able to operate
at high temperatures. Zenith precision metering
pumps provide pulseless metered flow to an
applicator while generating the necessary
pressure to meet system requirements. |
| |
| |
| |
| |
|
| |
| |
| |
|
