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Material Dryers
Hot Air Dryers
Most materials require drying prior to use otherwise hydrolysis may occur during processing resulting in defective parts and poor surface finish.
The D, SH and MH series of hot air dryers are particularly suited to non-hygroscopic thermoplastic granules. These non-hygroscopic materials retain moisture on the granule surface only, trapping a relatively small amount of humidity.
The D series of hot air dryers - with hopper capacities between 15 and 250 litres and process air flow between 50 and 400 m3/hr - may be mounted on a wheeled frame or directly to the process machine feed point.
The SH and MH series are floor standing and have capacities between 400 to 800 and 12oo to 2000 litres respectively. Air flow from 200 to 800 m3/hr with the SH series and up to 1000 m3/hr with the MH.
Hot Air Dryer Specifications
- Stainless steel insulated drying hopper with removable hot air diffuser cone.
- Hoppers with hinged lid designed to accept the SP and TP range of loaders.
- Hinged inspection door on TR250 and above.
- Microprocessor PID electronic controller with Led display.
- Heating control with SSR.
- Return air by pass kit for energy savings.
Hot air dryers technical specifications (pdf file, < 1MB - requires Adobe Reader)
Dehumidifyer Dryers
Some materials, most commonly engineering polymers, are hygroscopic - that is they absorb moisture within the plastic granules.
Hot air dryers are not able to remove moisture from within the granule; for these materials a dehumidifier dryer is recommended. Molecular sieve dryers are one of the best methods of producing low dew point temperature air, as low as -50oC which has the capacity to draw out the moisture from within the granule and absorb it into the molecular sieve. Properties of a molecular sieve: the ability to hold large quantities of moisture and other particles at a relatively low temperature and to be regenerated by heating for reuse.
Features of DEU and DE Series Desiccant Dyers
- Daily, weekly timer
- Proper and consistant airflow through the material
- High pressure blowers
- Large surface area filters
- Fully insulated stainless steel molecular sieve towers
- Compact design
- PID microprocessor controller
- Safety monitoring
Money and Energy saving features
- Regeneration cycle controlled by temperature monitoring
- Heat recovery from regeneration to process circuit
- 'Energy save' function
- Standard MT version with AIR/AIR heat exchanger - no need for cooling water to be connected
- RCE, anti stress, function (optional)
- X function, electrically driven change over of molecular towers, no compressed air required (optional)
Sizes available from 30 ltr to 2000 ltr with air flow from 80 m3/hr to 160 m3/hr
Dehumidifyer dryers technical specifications (pdf file, < 1MB - requires Adobe Reader)