Aluminum foil vacuum packaging bag is a common food packaging bag. Recently, a customer reported that the aluminum foil vacuum bag has been found to be leaking, not in a vacuum state, but the bag is intact. If you don't think about it, you can't understand it. Also worried about the impact of tea quality, leakage of tea can drink?
In view of the above problems, we have specially searched for information in this respect:
1： What are the causes of air leakage in aluminum foil bags
As we know, the function of aluminum foil bag is mainly in two aspects. One is to extend the shelf life of food, improve the exquisite and stiffness of packaging, and further increase the barrier property of packaging bag. Aluminum foil bag is suitable for all kinds of meat food vacuum, cooking resistance, boiling, freezing and other sterilization and fresh-keeping packaging, with UV protection, light insulation, heat insulation.
However, what is the cause of air leakage in the aluminum foil bag? Yongxinhai, an aluminum foil bag manufacturer, concluded that the main causes of air leakage were the following factors:
1. The shape of aluminum foil bag is irregular, and it is easy to be damaged by external things.
2. Uneven quality and uneven thickness make the aluminum foil bag easy to be damaged and cause air leakage.
3. In the process of vacuum pumping, too long time will lead to excessive pumping and damage the aluminum foil bag.
4. The protruding part of the aluminum foil bag has small holes due to improper stretching, resulting in air leakage.
5. In the transportation process, the aluminum foil bag is extruded and folded too long, resulting in air leakage.
The above five points are the summary and sharing of "what are the causes of air leakage in aluminum foil bags."
2： Does air leakage affect the quality of tea?
We can say for sure that this has no effect at all, because the impact on tea quality mainly includes the following aspects:
1. The influence of temperature on tea quality: temperature has a great influence on the aroma, color and taste of tea, especially in July to August in the south, the temperature sometimes reaches above 40 ℃, that is, the tea has been dried and stored away from light, and it will soon deteriorate, making green tea green, black tea not fresh and scented tea not fragrant. Therefore, in order to maintain and extend the shelf life of tea, low temperature insulation should be adopted, and the temperature should be controlled between 0 ℃ and 5 ℃.
2. The influence of oxygen on tea quality: in the air of natural environment, there is 21% oxygen. If the tea leaves are directly stored in the natural environment without any protection, they will soon be oxidized, making the soup red or even brown, and the tea will lose its flavor.
3. The effect of light on tea quality: light can change some chemical components in tea. If the tea leaves are exposed to the sun for a day, the color and taste of tea will change significantly, thus losing its original flavor and freshness. Therefore, tea must be stored in closed doors.
4. Effect of moisture on tea quality: when the moisture content of tea is more than 6%. The change of each component began to accelerate. Therefore, the storage environment of tea must be dry.
As long as the bag is not damaged, it just means that there is no vacuum state in the packaging. However, it does not mean that tea will directly contact the above four aspects, so it has no impact on the quality of tea and can be safely drunk. Tea is bought back to drink, so we suggest that the package that has been leaking should be opened first. No air leakage of vacuum bag packaging tea, cool room temperature can be preserved, shelf life of up to 2 years.
Dongguan Beite packaging materials Co., Ltd. is a large-scale company specializing in the production of food grade composite packaging. It is a professional manufacturer of composite packaging bags. It uses new equipment to produce packaging bags and roll films, providing comprehensive, environmental protection and safety packaging services for the market. The company produces composite bags, roll film, fruit bags, aluminum foil bags, suction mouth bags, self-supporting bags, zipper bags, anti-static bags, special-shaped bags, etc., which are suitable for the internal and external packaging of food, daily chemicals, electronics, toys, medicine, cosmetics, industrial products and other industries. We uphold the integrity of cooperation, good quality, good service business philosophy, won the industry's approval, products sold to all over the world; welcome friends from all walks of life to inquire, visit our factory to investigate guidance and business negotiations.