Analysis of the characteristics of tea packaging machine requirements for tea

The moisture in the tea is the medium for the biochemical change of the tea, and the low moisture content is conducive to the preservation of the quality of the tea. The water content in tea should not exceed 5%, and 3% is good for long-term storage. Otherwise, ascorbic acid in tea will be easily decomposed, and the color, aroma and taste of tea will change, especially at higher temperatures. The speed will increase. Therefore, in the packaging of the tea packaging machine, a moisture-proof property can be selected, such as a composite film of an aluminum foil or an aluminum foil vapor-deposited film as a base material for moisture-proof packaging of the packaging material.

Gas barrier

The aroma of tea leaves is easily lost, and it is easily affected by external odors. In particular, the residual solvent of the composite film and the odor of the electric iron treatment and heat sealing treatment will affect the flavor of the tea and affect the fragrance of the tea. Therefore, when packaging tea leaves, it is necessary to avoid escaping from the package and absorbing odor from the outside. Tea packaging materials must have certain barrier properties.

High temperature protection

Temperature is an important factor affecting the quality change of tea. The temperature difference is 10 °C, and the rate of chemical reaction is 3 to 5 times. Tea leaves will exacerbate the oxidation of the contained substances at high temperatures, resulting in the rapid reduction of effective substances such as polyphenols and the deterioration of quality. According to the implementation, the storage temperature of the tea leaves is better than 5 ° C. At 10 to 15 ° C, the color of the tea leaves is slower, and the color effect can be maintained. When the temperature exceeds 25 ° C, the color of the tea leaves will change rapidly. Therefore, the tea leaves are suitable for storage at low temperatures.