The company was founded in 1883 as AB Separator and in 1938 produced its first heat exchanger. The name Alfa-Laval was introduced in 1963, spelled with a hyphen until 1993. (The "Alfa" is derived from the alpha disc, or Alfa-disc, an invention by Clemens von Bechtolsheim that was acquired by Separator in 1889.) In 1991 Alfa Laval was acquired by Tetra Pak and between 1993 and 2000 Alfa Laval was a part of the Tetra Laval Group. In 1993, Alfa Laval Agri, a company producing dairy farming equipment, was split from Alfa Laval. When Alfa Laval was sold, Alfa Laval Agri remained a part of the Tetra Laval Group and was renamed DeLaval, after the company's founder.