Perforated Drum Systems
Through-air drying is based on a combination of perforated drum and radial fan. The fan sucks air out of the perforated drum and returns it over heating elements to the outside of the drum. This creates a suction draft on the drum surface, which safely keeps the fabric to be dried on the drum. At the same time, air flows through the fabric.

In 1929, Hans Fleissner received his first patent for through-air drying technology. Since then, Fleissner has delivered more than 45,000 perforated drums to customers worldwide.

Perforated drum technology can be used as following:
Design
Drying
Heatsetting
Thermobonding
Omega
Yes
Yes
Yes
Multi Drum
Yes
No
Yes
Circular stenter
Yes
Yes
No

Highlights in drying technology:
Highest requirements on material
Largest working width
Highest speeds
Highest evaporation capacities
Most sophisticated engineering

Perforated Drum Dryer (PDF, 521KB)