Why are some teas not vacuum packed?
In order to ensure the quality of tea and pure taste, natural, free from external conditions, but also in order to enhance the image of tea, enhance the value of goods, the exquisite packaging of tea is the trend of the times. These unsuitable vacuum packed tea, such as green tea and Longjing, tend to be easily squeezed and packed and can be packed in vacuum packed with nitrogen. Brick tea packaging paper bag packaging form form West Lake Longjing Tea vacuum tea vacuum packing inflatable packaging is a mixture of gases in vacuum and then filled with nitrogen, carbon dioxide and other two or three kinds of single gas or gas. Nitrogen is an inert gas with a density close to the air. It acts as a filling, keeping positive pressure in the bag and protecting the leaves from crushing by atmospheric pressure. Carbon dioxide can make tea into sleep, and maintain the quality of tea.
Some tea leaves are not allowed to be packed in vacuum, such as crunchy and fragile tea leaves, easily caking tea leaves, easily deformed tea leaves, sharp edges and corners or higher hardness, and will puncture the tea bags and so on. For example, Yunnan tea, are generally made of tea or tea brick, covering the surface of a layer of paper for simple packaging.
Feng Xing packaging machinery factory experts explained that the main role of vacuum packaging machine is oxygen, moisture, high temperature fermentation, etc., in order to prevent the deterioration of tea. The principle is relatively simple, which is conducive to vacuum packaging machine to remove the air in the packaging bag, and then sealed, so that tea in a vacuum under the state, and absolutely isolated from the outside world.
