Sterlco SHA Series Hot Air Dryer - Manual (Page 12)

Hot Air Dryers Chapter 4: Startup and Operation 12 of 17
4-5 Drying Non-Hygroscopic Materials
Non-hygroscopic materials retain surface moisture which has to be removed to ensure high
product quality. Different materials require different times and temperatures to thoroughly
dry. Recommended drying rates are listed in the figure below.
Figure 3: Temperature Guide and Drying Rate Chart for Non-Hygroscopic Materials
Material
Drying
Maximum Throughput
Non-
Hygroscopic
Materials
Residence
Time (hrs)
(˚F) (˚C)
60
cfm
150
cfm
225
cfm
450
cfm
1000
cfm
1250
cfm
1500
cfm
2500
cfm
Acetal 1.5
200-
220
93-
104
120 300 450 900 2000 2500 3000 5000
Polypropylene 1.5 220 104 120 300 450 900 2000 2500 3000 5000
Styrene 1.5 185 85 120 300 450 900 2000 2500 3000 5000
Vinyls 1.5 200 93 120 300 450 900 2000 2500 3000 5000
Polyethylene 1.5 185 93 120 300 450 900 2000 2500 3000 5000
Note: For materials with up to 2% surface moisture. For materials with higher
moisture content, please contact Engineering.