The patented solution is amazingly simple: the membrane is designed as a continuous airtight double membrane and is fitted with an air connection. The air introduced between the membranes can only escape via the microperforation of the upper membrane. As a result, the membrane is completely decoupled from the base structure — a feature unique to this diffuser type.
If only the membrane is to be supplied, it can be rolled up in a spiral form. This drastically reduces shipping weight and volume.