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IMA Life also offers freeze-drying technology: industrial, pilot and laboratory freeze dryers. IMA Life designs, manufactures, installs and services integrated systems predominantly for the pharmaceutical primary packaging market. It has been in the market of freeze dryer manufacturing for more than 50 years.
Modern freeze drying began as early as 1890 by Richard Altmann who devised a method to freeze dry tissues (either plant or animal), but went virtually unnoticed until the 1930s. [8] In 1909, L. F. Shackell independently created the vacuum chamber by using an electrical pump. [ 9 ]
In freeze-drying, this means going around to the left (low temperature, low pressure; blue arrow). However, some structures are disrupted even by the solid–gas boundary . Supercritical drying, on the other hand, goes around the line to the right, on the high-temperature, high-pressure side (red arrow).
Freeze drying or lyophilization is a drying method where the solvent is frozen prior to drying and is then sublimed, i.e., passed to the gas phase directly from the solid phase, below the melting point of the solvent. It is increasingly applied to dry foods, beyond its already classical pharmaceutical or medical applications.
[2] [3] A freeze-drying method using vacuum chambers was patented in the 1930s. During World War II, the technology was further perfected and expanded to freeze-dry instant coffee, but also blood plasma and penicillin. Penicillin itself was also produced using vacuum technology. [citation needed]
The spray drying technique was first described in 1860 with the first spray dryer instrument patented by Samuel Percy in 1872. [citation needed] With time, the spray drying method grew in popularity, at first mainly for milk production in the 1920s and during World War II, when there was a need to reduce the weight and volume of food and other materials.
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