FERROELECTRET MULTILAYER COMPOSITE AND METHOD FOR PRODUCING A FERROELECTRET MULTILAYER COMPOSITE WITH PARALLEL TUBULAR CHANNELS

摘要

The invention relates to a ferroelectret multilayer composite (1), comprising at least two polymer films arranged one above the other and connected to each other, with cavities formed between the polymer films, said cavities being tubular in particular parallel channels. The invention further relates to a method for producing a ferroelectret multilayer composite with parallel tubular channels and a device for carrying out the method for producing said ferroelectret multilayer composite. A piezoelectric element comprising said ferroelectret multilayer composite is also disclosed.