- Additional information
How Does It Work?
After absorbing moisture from the air, the water molecules are bound to the polymer chains of filaments. The PrintDry filament dryer uses heat to cause the molecules in the filament to move more vigorously and this weakens and breaks the bond of water molecules from the polymer chains and permits water molecules to move freely. Airflow carries heat to the filament and also carries the freed water molecules away. However, filaments do not dry instantly. They must first be heated to allow the water molecules free movement. Then, there must be sufficient time for the water molecules to defuse to the surface of the filament in order to evaporate. The PrintDry filament dryer is designed based on these drying factors: (1) heat; (2) dew point; (3) drying time; (4) airflow.
- Same filament with different moisture content can make a big difference in the quality of your prints
- A spool of filament can be dried in a PrintDry filament dryer before 3D printing for storage. The dryer temperature can be set in a range of 35-70°C or 95-160°F
- Relative humidity inside the PrintDry filament dryer can go as low as 10% after 2-hour drying
- To dry multiple spools of filaments as well as to regenerate desiccant packs are also possible
The PrintDry filament dryer is based on the following basic parameters of drying.
- Drying Temperature: As the temperature is increased, the molecules inside a filament move more vigorously and this weakens/breaks the moisture/polymer inter-molecular bonds. In addition, heat also causes the air to expand, reducing the concentration of water molecules in it, making the air inside the dryer more able to absorb moisture. The water molecules can travel more freely through the filament at higher temperature. Generally speaking, the higher the drying temperature, the more quickly and thoroughly the filament will dry. However, if the drying temperature is too high, thermal degradation and/or oxidation may occur. Different filaments need different drying temperatures.
- Moisture concentration differential: This refers to the amount of moisture in the filament versus that in the air surrounding the filament. Surrounding a moist filament with dry (low dew point) air, will encourage water molecules inside a filament to migrate more readily to the surface and eventually being carried away by air.
- Drying Time: Filaments do not dry instantly. First, it takes time for the heat to penetrate/distribute throughout the filament interior, especially those deeply buried in the spool. Second, it takes time for the newly freed water molecules to defuse to the surface of the filament.
- Air Flow: Airflow carries heat to the filament and also carries water molecules away.
- Active Drying Technology
- Dryer Temp Range: 35-70°C or 95-160°F *
- Continuous Drying Time: 40 Hours (max)
- Power Supply: 120VAC/60Hz or 220VAC/50Hz, 245W
- Spool Dimensions: OD 100-250mm (4-10″), Height 25-125mm (1-5″), Spool Mounting Hole Diameter 19-58mm (3/4-2.3″)
- Spool Weight: max. 2Kg (4.5 lbs)
- Weight: 3.8Kg or 8.5lbs
- Size: 370x370x360mm or 15x15x15″