. Condensed milk and milk powder : prepared for the use of milk condenseries, dairy students and pure food departments . Condensed milk. 184 Condensed Milk and Milk Powder 2. The Just-Hatmaker Process.—The milk sprays in a thin film over two steam heated cylinders or drums, about sixty inches long and twenty-four inches in diameter. The cylinders are about one-eighth of one inch apart and revolve in opposite directions. The milk reaches the drums from a supply tank located in the center above the drums. In order to insure a continuous and uniform sup- ply of milk, a constant level of about fou
. Condensed milk and milk powder : prepared for the use of milk condenseries, dairy students and pure food departments . Condensed milk. 184 Condensed Milk and Milk Powder 2. The Just-Hatmaker Process.—The milk sprays in a thin film over two steam heated cylinders or drums, about sixty inches long and twenty-four inches in diameter. The cylinders are about one-eighth of one inch apart and revolve in opposite directions. The milk reaches the drums from a supply tank located in the center above the drums. In order to insure a continuous and uniform sup- ply of milk, a constant level of about four inches of milk is main- tained in the supply tank. This process was invented by J. R. Hat- maker of London, and was patented in 1902. Its objectionable fea-. Fig. 55. The Just-Hatmaker milk drier ture lies in the fact that the excessive heat at whith the milk is evaporated impairs the solubility of the product. The cylinders are charged with two to three atmospheres of steam pressure, causing the heating surface to have a temperature of about 250 to 280 de- grees F. 3. The Eckenburg and Passburg Processes.—In the Ecken- burg process the milk is exposed in a thin layer on the surface of a revolving metal cylinder or drum, which is enclosed in a vacuum chamber. The cylinder is heated by passing hot water or steam through it. The fact that the evaporation takes place in a vacuum chamber makes it possible to accomplish the drying at a relatively. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Hunziker, Otto Frederick, b. 1873. La Fayette, Ind. : Otto F. Hunziker
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