CONDENSED AND POWDERED MILK 471 



the drying process completed. After the drying is completed 

 the milk is ground into flour. 



The Ekenberg process. — This process was invented by Dr. 

 Martin Ekenberg of Stockholm, Sweden. The patents con- 

 cerning this process are owned by the Ekenberg Company of 

 Cortland, New York. The first powdered milk made by this 

 process in this country was made at the Cortland plant in 1905. 

 The company now operates a number of factories in New York 

 and Michigan. 



" Dr. Ekenberg's process 1 consists of complete drying of 

 milk in a vacuum machine known as an exsiccator. In this 

 process the milk is first sprayed upon the bowl-shaped ends of a 

 revolving drum. In this step of the process a considerable 

 amount of moisture is removed. The condensed milk resulting 

 is then sprayed upon the cylindrical surface of the drying drum 

 and the remaining moisture is removed during one revolution 

 of the drum. Knives or scrapers having a bearing upon the 

 surface of the drum cut the film of dried milk from the drum and 

 it falls in a film into a receiving chamber, which is separated 

 from the large drying chamber by two air-tight gates or locks, 

 thus providing for the removal of the dried product without 

 breaking the vacuum or stopping the process. This arrange- 

 ment of product chambers and locks permits of a continuous 

 operation of the machine. 



"After the product has been removed from the exsiccator it 

 is cooled and then milled upon specially constructed mills. 



"By this process different grades of milk are manufactured, 

 ranging from skim-milk to whole milk, and even milk containing 

 more than the normal amount of butter-fats. They also use 

 the exsiccator in the manufacture of malted milk and malted 

 buttermilk, the latter being used in Teco prepared flours, used 

 for pancakes and other purposes. 



1 Data by L. P. Bennett. 



