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 The series of hot air dryers from PLASTIC SYSTEMS are particulary designed for the drying of non-hygroscopic thermoplastic granular materials. Non-hygroscopic materials are polymers which do not absorb moisture within the granules, but, hold the moisture on the granule surface, trapping a relatively small amount of humidity. However, the processing of plastic materials with the presence of water moisture, may seriously affect the process and hence, the final product quality. The HAD (Hot Air Dryers) series are designde into 2 main ranges.
The first range includes the models from HAD30 to HAD200, with process airflow from 70 to 200 m3/h and they are suitable for direct installation above the machine throat. It is also possible to install them onto a floor-standing trolley for easy handling should more flexibility be required.
The second range includes models from HAD400 to HAD2500 with process airflow from 400 to 1350 m3/h. These models are installed on floor-standing frames and are used for large material capacities.
The units have a very compact design, as the hopper, blower and heating chamber are all mounted on the same frame, assuring easy handling and installation. The drying capacities of the HAD models depend on the type of materials and throughputs required. The specifications are on the attached technical sheets.
In addition to the standard range of models, Plastic Systems can design and manufacture tailor-made units with hopper sizes up to 12,000 dm3 and airflows up to 5,000 m3/h.
Technical features
Stainless steel insulated drying hopper with glass-fibre insulation, also supplied with a built-in hot air diffuser cone;
Microprocessor control, fitted with 3-digits display and keypad for easy working and setting operations. The control acts with high precision PID electronic process for hot air temperature control;
Daily/weekly timer is standard in all models;
Hinged cover lid to suit Plastic Systems hopper loader installation or others;
Hinged insulated inspection door from HAD250 model upwards;
Designed and manufactured according to CE Standards and safety regulations.
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Hot Air Dryers
A HD unit has a blower that sucks in ambient air and blows it into a process heating chamber to heat it up to set working temperature. This heated process air, is then blown into a drying hopper containing the non-hygroscopic polymer, where the hot air flows from the bottom to the top of the hopper, the hot air passes over the surface of the granules, heating them up and removing the moisture from the granule surface and evaporating it in the hot air stream. The return air is filtered through an air cartridge paper filter.
After successfully removing the surface moisture, the moist laden air can either be totally exhausted into the atmosphere or partially returned into the incoming ambient air with consequent energy savings.
Call for quotation! |
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Hot Air Dryers
A HD unit has a blower that sucks in ambient air and blows it into a process heating chamber to heat it up to set working temperature. This heated process air, is then blown into a drying hopper containing the non-hygroscopic polymer, where the hot air flows from the bottom to the top of the hopper, the hot air passes over the surface of the granules, heating them up and removing the moisture from the granule surface and evaporating it in the hot air stream. The return air is filtered through an air cartridge paper filter.
After successfully removing the surface moisture, the moist laden air can either be totally exhausted into the atmosphere or partially returned into the incoming ambient air with consequent energy savings.
Call for quotation! |
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