Aluminum foil is used in packaging bags to effectively block light, moisture and gas, thus ensuring that the packaging is well protected. Especially for the packaging of retort foods, the use of this composite aluminum foil material can ensure the freshness of the food for a long time. Moreover, aluminum foil packaging is convenient for heating and unpacking, and is very popular among consumers.
Aluminum foil has many specifications. Generally, the thickness of aluminum foil for packaging bags is between 0.006 mm and 0.1 mm. Packaging food in aluminum foil bags has the following advantages:
1. The surface of the aluminum foil is clean and hygienic, which can effectively prevent the growth of bacteria or microorganisms.
2. Aluminum foil is a non-toxic, odorless material, it can be in direct contact with food without any dangers that can endanger human health, and will not cause any odor in food.
3.The aluminum foil packaging bag can effectively block the influence of light and air from the outside, ensure that the food will not dry and shrink, and there will be no oil penetration.
4. Aluminum foil has good plasticity, so it can be used to package products of various shapes, and can also be used to produce containers of various shapes.
5. The aluminum foil is light in weight, has a certain strength, and has good printability. It can print various characters or patterns on it.
What should we pay attention to when using aluminum foil bags?
Since the aluminum foil has a large hardness and a large tensile strength, its tear strength is small, so it is easily torn, and care must be taken when using it. In addition, the aluminum foil itself cannot be heat-sealed and must be coated with a heat-sensitive material such as pe to be thermally sealed. The most important point is that aluminum foil may have adverse reactions when it comes into contact with other heavy metals or heavy metals. It is especially important when packaging food.