Home > Knowledge > Content
Packaging will be known to the various properties of aluminum foil
Aug 30, 2017

Core Tip: Aluminum foil has a good barrier, shading, gorgeous appearance, small weight, non-toxic and other packaging materials can not match the advantages. Therefore, aluminum foil is widely used in the field of packaging, packaging is the only metal foil. In the use of aluminum foil as a packaging material, to understand the performance of aluminum foil, in order to better reflect the performance of aluminum foil as a packaging material.

Aluminum foil has a good barrier, shading, gorgeous appearance, small weight, non-toxic and other packaging materials can not match the advantages. Therefore, aluminum foil is widely used in the field of packaging, packaging is the only metal foil. In the use of aluminum foil as a packaging material, to understand the performance of aluminum foil, in order to better reflect the performance of aluminum foil as a packaging material. I summed up the five major performance classification of aluminum foil for your reference.

 

1.mechanical

The mechanical properties of aluminum foil mainly include tensile strength, elongation, crack strength and so on. The mechanical properties of aluminum foil mainly by the thickness of the national standard GB / T3189-2003 "aluminum and aluminum alloy foil" on the vertical mechanical properties of aluminum foil made the corresponding provisions.

 

In general, aluminum foil light weight, good ductility, thin thickness, small quality per unit area. But the strength is low, easy to tear, easy to break when folded, resulting in holes, so generally not used alone for packaging products. In many cases, with other plastic film and paper compound to overcome its shortcomings.


2.high barrier

Aluminum foil has a high barrier to water, water vapor, light and fragrance, and is not affected by the environment and temperature. It is therefore commonly used in fragrant packaging, moisture-proof packaging, etc., to prevent moisture absorption, oxidation and volatilization of packaging contents. Especially for high temperature cooking food sterilization packaging.

 

3.corrosion resistance

The formation of the oxide film naturally forms an oxide film, and the formation of the oxide film can further prevent the continuation of oxidation. Therefore, when the contents of the package have high acidity or alkalinity, the surface of the aluminum foil is often coated with a protective coating or coated PE, Its corrosion resistance.

 

4.heat, low temperature resistance

Aluminum foil high temperature and low temperature stability, the temperature at -73 ~ 371 ℃ when not shrinkage deformation, but also has good thermal conductivity, the thermal conductivity of up to 55%. So it can be used for high temperature cooking or other hot work, but also can be used for frozen packaging.

 

5. shading 

Aluminum foil has a good shading, the reflectivity can be as high as 95%, while the appearance of silver-white metallic luster, decorative surface decoration can show a good packaging and decorating effect, so aluminum foil is also a high-grade packaging materials


Products List