Heat Conduction: Aluminium Foil Melting Point Is High
Aluminum is the raw material for aluminum foil. And its melting point is 660.4 °C, and its boiling point is 2467 °C. So, what is the melting point of aluminum foil? Theoretically, the melting point of aluminum foil is 660 °C. Under normal cooking, the foil will not melt, and it is not easy to reach the melting temperature.
Once the melting point of aluminum foil is exceeded, aluminum oxide will form on its surface, causing deformation, brittleness, or fire.
It is worth noting that aluminum foil can be used in the oven. You can buy some microwave-safe aluminum foil to use in the microwave.
The melting point of aluminum foil refers to the highest temperature at which it does not deform or melt during heating. Under normal circumstances, the melting point of aluminum foil is around 600 °C, but in fact, the melting point is related to factors such as thickness, quality, and shape.
Generally speaking, the thicker the aluminum foil and the better its quality, the higher its melting point. At the same time, aluminum foils of different shapes also have different melting points, such as flat foil, which has a higher melting point than curled foil.
In life, we will choose the right tin foil according to the purpose. For example, food packaging foil used in the kitchen can accept 200 °C; the melting point of industrial aluminum foil will be higher.
Insulation: Aluminum Foil Has Good Barrier Properties
Aluminum packaging foil has a smooth surface, no holes, and an extremely high density, which can block the entry of air, light, moisture, and odor and prevent food from oxidation and deterioration. The foil barrier property can also block RFID.
The barrier property is closely related to thickness. Generally speaking, the barrier performance will improve as the thickness of the aluminum foil increases. However, as the thickness increases, the plasticity and toughness of the aluminum foil will gradually decrease. For packaging, the thicker, the better.
The thickness of the aluminum foil has a more obvious effect on the barrier to oxygen. It is generally believed that when the thickness of the aluminum foil reaches about 0.025 mm, that is, 25 μm, it can have good barrier properties, but for the barrier of water vapor, aroma, light, and other factors, its thickness requirements will be different.
Therefore, the aluminum foil thickness needs to be selected according to the packaging requirements.
Safety: Aluminum Foil Is Non-toxic
Aluminum foil is safe because it uses more than 99% pure aluminum as its raw material, and does not contain harmful chemicals. No toxic substances are added during the production process, so it will not cause pollution to food or other contact items. Aluminum foil will not release harmful substances at a certain temperature, so it is a safe material to use during cooking and heating.
Many aluminum foil products meet the safety standards for food contact materials and have been tested and certified by relevant agencies to ensure their safety and non-toxicity.