Powdered foods like juice concentrates, whey powder, protein supplements, soup powders, cocoa, gelatin, dehydrated soft drink concentrates, instant coffee powders and milk powders are gaining popularity in the growing world.
The presence of moisture during processing of food powders and beverage powders causes:
Due to high humidity, the powdered food often stick to the hoppers, conveyors and packaging machine, leading to frequent breakdowns in the conveyor drive mechanism.
Recommended RH for Powdered Foods
|Food Powder||Temperature in ºC||RH %|
|Instant Coffee Processing||26ºC||20% RH|
|Fruit Powder Handling||20°C – 22°C||35% RH|
|Tomato Powder Production||19°C – 23°C||25% – 35% RH|
|Dry Soup Packaging||21°C||20% RH|
|Powdered Drink Mix Packaging||21°C||20% RH|
|Cooling of Spray Dried Milk Powder||10°C||35%- 40% RH|
|Milk Powder Packaging||22°C– 25°C||35% – 40% RH|
|Whey Powder Manufacturing/Storage||21°C – 26°C||15% – 30% RH|
Through dehumidifier the dry air is continuously circulated in the unit through a suitable supply and return air system. An air handling unit functioning separately maintains the desired temperature in the packaging and storage area.