Requirements for fully automatic vacuum packaging machine in packaging tea

The requirements of the automatic vacuum packaging machine for packaging tea are moisture-proof, oxidation-proof, gas-proof, high-temperature resistance, and shading. The tea vacuum packaging machine shortens the tea packaging time and avoids manual contact. The tea products are not only not easy to be broken, but also more clean and hygienic; in addition, each small bag of tea has a computer board weighing control, which truly makes the tea hardcover reach the Standardize production targets. 1. The moisture in moisture-proof tea is the medium for the biochemical changes of tea, and low moisture content is conducive to the preservation of tea quality. The moisture content in tea should not exceed 5%. 3% is the best for long-term storage. Otherwise, the ascorbic acid in the tea will be easily decomposed, and the color, aroma and taste of the tea will change, especially at a higher temperature, the deterioration rate will be accelerated. Therefore, the tea vacuum packaging machine can choose a composite film with good moisture-proof performance, such as aluminum foil or aluminum foil evaporated film as the basic material, as the packaging material for moisture-proof packaging. 2. How to treat too much oxygen content in the package of anti-oxidation tea vacuum packaging machine will lead to the oxidative deterioration of some components in the tea. For example, ascorbic acid is easily oxidized into deoxyascorbic acid. And further react with the amino acid pigment to make the tea taste worse. therefore. The oxygen content in tea packaging must be effectively controlled below 1%. In the packaging technology of tea vacuum packaging machine. Air or vacuum packaging can be used to reduce the presence of oxygen. The vacuum packaging technology is to put the tea into a soft film packaging bag with good air tightness. When packaging, the air in the bag is removed to create a certain degree of vacuum, and then the packaging method is sealed and sealed; the inflatable packaging technology is to fill in inert gases such as nitrogen while exhausting the air, in order to protect the color, aroma and taste of the tea leaves. unchanged, maintaining its original quality. 3. The aroma of air-blocking tea leaves is easily lost, and it is easily affected by external odors, especially the residual solvent of the composite film and the peculiar smells decomposed by electric ironing and heat-sealing treatments, which will affect the flavor of tea leaves and affect the aroma of tea leaves. Therefore, when packaging tea leaves, the tea vacuum packaging machine must avoid escaping aroma from the packaging and absorbing odors from the outside. The packaging material of tea must have certain gas barrier properties. 4. Anti-high temperature temperature is an important factor affecting the change of tea quality. If the temperature differs by 10°C, the rate of chemical reaction differs by 3 to 5 times. At high temperature, tea will aggravate the oxidation of the contained substances, resulting in the rapid reduction of effective substances such as polyphenols, and the accelerated quality deterioration. The storage temperature of tea leaves is best below 5°C. When the temperature is 10-15℃, the color of tea leaves will decrease slowly. The color and luster effect can also be maintained well. When the temperature exceeds 25 °C, the color and luster of the tea will change rapidly. Therefore, tea leaves are suitable for storage at low temperature. 5. Shading light can promote the oxidation of chlorophyll and lipids in tea leaves, increase the odor substances such as valeraldehyde and propionaldehyde in tea leaves, and accelerate the aging of tea leaves. Therefore, tea vacuum packaging machines must be shading when packaging tea leaves. In order to prevent the photocatalytic reaction of other components such as chlorophyll and lipids. In addition, ultraviolet rays are also an important factor in causing the deterioration of tea leaves. To solve such problems, shading packaging technology can be used.

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