Patent ID: 6931697

Claim:
A method for producing a piezoelectric actuator ( 8 ) with a multilayer structure of layers of a piezoelectric sheet ( 3 , 4 ), and with inner electrode disposed between layers of the piezoelectric sheet, comprising the steps of: forming two individual layers of two continuous strands ( 3 , 4 ) of the piezoelectric sheet; providing an inner electrode between the layers of the continuous strands; winding the two strands ( 3 , 4 ) over one another in the form of a double helix to form a hollow-cylindrical stack, thereby enclosing the inner electrode between the two continuous strands; pressing each of the two strands ( 3 , 4 ) in a region of an overlay on the hollow-cylindrical stack, against a stack with a respective contact-pressure roller ( 9 , 10 ).