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Deaerator – Provides Continuous, On-the-Fly,
Thin-Film Resin Degassing

For high-output and high-volume applications, when batch tanks can’t
provide continuous uninterrupted feed, our Thin-Film Resin Deaerator
(also known as a degasser) supplies precisely heated, agitated and
degassed resins on-the-fly at up to 40 lbs/min.

Deaerator Benefits (vs. Operating with a Batch Tank):

• No need to wait for a full batch of prepared resin.
• Deaerator supplies higher quality material. Heat-history and degradation are minimized because the deaerator supplies degassed resin on-demand.
• Delivers large amounts of degassed material with little or no operator attention, aside from connecting a new full drum of resin.
• No need to maintain large batches of material at process temperature.
• Mechanically pumps degassed material out of the tank (to the mixing machine) while it is under vacuum. This eliminates the need to use dry nitrogen gas as overpressure; to feed degassed material to downstream metering pumps.
• Nitrogen gas bubbles can get mixed into the material whenever the agitator runs too fast.

Deaerator Description/Operation:

• Constant vacuum draws fresh resin into the deaerator tank from the
  drum or tote.
• Resin passes through the adjustable orifice on the automatic inlet valve
  and onto the rotating Slinger Disk.
• The Slinger Disk throws material to the inside wall of the deaerator tank,
  creating a thin-film slide of resin down the tank wall.
• Controlled heat (to 285oF) on the deaerator’s sidewall lowers resin
  viscosity and surface tension, while vacuum breaks the air bubbles and
  dissolved gasses.
• A positive pressure feed pump, immersed in the material or mounted
  externally (under the bottom outlet valve) delivers the heated, air-free resin
  to your downstream process or to a precision metering pump on a meter,
  mix, dispense machine.
• When the liquid-level probe senses a drop in the level of resin, the inlet
  valve automatically opens and the degassing process is repeated.

Light-Sensing Vacuum Traps Eliminate costly vacuum pump rebuilding and cut downtime. This liquid trap stops foamed resin from flooding the vacuum pump while degassing. When the glass-tube receiver has just 30ccs of resin inside, the light-beam and reflector sense it, the valve closes, an alarm sounds and the flood of resin stops. The receiver (see inset) comes apart four pieces for easy cleaning.

Vacuum Pumps 11-, 20-, 55-, 100-CFM and larger are available from APT. Complete assemblies include a motor-starter, a manual switch mounted on the control panel, a bleed valve and an analog gauge on the tank lid, plus plumbing to the tank. An optional electronic vacuum sensor, mounted on the tank lid with an automatic control valve, can hold preset vacuum setpoints on material in the tank. Preset vacuum levels can optionally be entered at the operator-interface control panel on the meter/mix machine.

The Heateroll^® - 55-Gallon Drum Heating/Melting Oven Melts one drum, fast. The combined heating and rotating action of the The Heateroll^® typically preheats drums 6 to 8 times faster than conventional “stand-up” drum heating methods. Operates with ceramic-enclosed infrared heaters. Saves energy and minimizes thermal degradation of the material. Inset shows the Heated Compartment, which slides over the drum, in the closed position. Temperature Range: 90^oF to 200^oF. Keeps filler in suspension.