Author: Smartweigh–Multihead Weighter
The tea packaging machines on the market can be used for automatic packaging of tea, health products, food and other materials. Compared with the previous manual packaging, this mechanized packaging has the functions of moisture-proof, odor-proof and fresh-keeping. Take bagged tea as an example.
Use a tea packaging machine for packaging. First, the material can be put into the inner bag, and then the inner bag can be put into the outer bag to realize the simultaneous packaging of the inner bag and the outer bag. high degree of automation.
When using the tea packaging machine, the processes of bag making, measuring, filling, sealing, slitting and counting can be automatically completed. In addition, our tea packaging machine can quickly change the specifications of the packaging bags according to the needs of the packaging process. The width can be adjusted easily and quickly by adjusting the handle, which can not only improve the packaging efficiency, but also ensure the packaging effect of tea leaves.
1. Moisture-proof: The moisture in the tea is the medium for the biochemical changes of the tea, and the low moisture content is conducive to the preservation of the quality of the tea. The moisture content in tea should not exceed 5%, and it is best to store 3% for a long time. Otherwise, the ascorbic acid in the tea leaves is easily decomposed, and the color, aroma and taste of the tea leaves will change, especially at high temperature, the deterioration speed will be accelerated.
Therefore, in the packaging process, a composite film with good moisture-proof performance, such as aluminum foil or aluminum foil vapor coating, can be selected as the basic material for moisture-proof packaging. 2. Anti-oxidation: Excessive oxygen content in the package can lead to the oxidation and deterioration of some components in the tea. For example, ascorbic acid is easily oxidized to deoxy and ascorbic acid, and further combines with amino acids to produce pigment reactions that worsen the taste of tea leaves.
Therefore, the oxygen content in tea packaging must be effectively controlled below 1%. In terms of packaging technology, inflatable packaging or vacuum packaging can be used to reduce the presence of oxygen. Vacuum packaging (powder packaging machine) technology is to put tea into a soft film packaging bag with good air tightness, remove the air in the bag during packaging, generate a certain degree of vacuum, and then seal the packaging method; inflatable packaging technology is to discharge air At the same time, it is filled with inert gases such as nitrogen to protect the color, aroma and taste of tea leaves and maintain the original quality of tea leaves.
3. Anti-high temperature: temperature is an important factor affecting the change of tea quality. The temperature difference is 10℃, and the chemical reaction speed is 3~5 times. Tea leaves will aggravate the oxidation of substances at high temperature, resulting in a rapid reduction of effective substances such as polyphenols, and rapid changes in quality differences.
According to the implementation, the storage temperature of tea leaves is lower than 5°C, and the effect is better. At 10~15℃, the color of tea leaves decreases slowly, and the color effect can also be maintained well. When the temperature exceeds 25℃, the color of tea leaves will change rapidly.
Therefore, tea is suitable for storage at low temperature. 4. Shading: Light can promote the oxidation of chlorophyll, lipids and other substances in tea leaves, (liquid packaging machine) can increase the odor substances such as valeraldehyde and propionaldehyde in tea leaves, and accelerate the aging of tea leaves. Therefore, when packaging tea leaves, light must be shielded to prevent photocatalytic reactions of components such as chlorophyll and lipids.
In addition, ultraviolet rays are also an important factor leading to the deterioration of tea leaves. Blackout packaging techniques can be used to address these issues. 5. Resistance: The smell of tea is easily lost, and it is also easily affected by external smells, especially the residual solvent of the composite film and electric ironing treatment, and the decomposed smell of heat sealing treatment will affect the taste of tea and affect the taste of tea.
Therefore, when packaging tea leaves, it is necessary to avoid releasing the aroma from the packaging and absorbing the smell from the outside. The packaging material of tea must have certain gas retardation properties.
Author: Smartweigh–Linear Weighter
Author: Smartweigh–Multihead Weighter Manufacturers
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