Bright spot of food foil
It has the characteristics of water resistance, маслостійкість, світлоізоляція і теплопровідність.
Це дозволяє швидко, контрольований нагрів їжі в контейнері.
Гладка поверхня алюмінієвої фольги, немає масла, включення, сліди рулонів тощо.
What are the main properties of food aluminum foil
Механічні властивості
The mechanical properties of aluminum foil mainly include tensile strength, elongation and crack strength, which are mainly determined by thickness. Вцілому, aluminum foil is light in weight, good in ductility, thin in thickness and small in mass per unit area
But the strength is low, easy to tear, easy to break when folded, leading to perforation. тому, it is generally not used for packaging products alone. In many cases, it is compounded with other plastic films and paper to overcome its shortcomings
High barrier property
Food-grade aluminum foil is highly resistant to water, steam, light and taste and is unaffected by environment and temperature. тому, it is often used for fragrance packaging, moisture-proof packaging, to prevent moisture absorption, окислення, volatilization and deterioration of goods
Corrosion resistant
Aluminum foil surface naturally formed oxide film. The formation of an oxide film further prevents oxidation. тому, when the ph of the packaging is high, the surface is usually coated with protective coating or PE to improve its corrosion resistance
Heat resistance and low temperature resistance
Aluminum foil is very stable at both high and low temperatures. Temperature between -73℃ and 371℃, no expansion or contraction. Good thermal conductivity, thermal conductivity up to 55%. тому, it can not only be used for high temperature cooking or other heat treatment, but also for frozen packaging
затінення
Aluminum foil has good shading, its reflectivity can be up to 95%, the appearance of silver white metallic luster. Surface printing decoration can show a good packaging decoration effect, so aluminum foil is also a high-grade packaging material.