Flexible Packaging Aluminum foil market is expected to have a considerable share covered by 7-micron (7mic) 8079 aluminum foil. Although it is unique in its thickness, it also possesses a variety of beneficial properties that make 8079 aluminum foil useful in an array of applications.
8079 Aluminum Foil For Food Packaging
The 7mic lamination aluminum foil adopts food packaging for high barrier properties. It can't only block oxygen, moisture and light, which are the leading contributors to food spoilage. For instance, use in chocolate pack, 7mic flexible packaging aluminum foil not only prevent chocolate to melt by reflect heat, but also protect chocolate from oxidation, keep the flavor and texture a long term. For frozen foods, flexible packaging aluminum foil protects against freezer burn so that food stays fresh and edible.
Premium Quality 7mic Aluminum Foil
This property is known as elongation of 8079 aluminum foil, which can be defined as the amount of percentage increase in length which foil can bear when heated elongation occurs. The higher the elongation, the better the ductility of the foil. In the case of 7mic aluminum foil for packaging application, good elongation is crucial. Aluminium foil may need as it is are more stretched, folded, or formed into some specific shape during the packaging process. Because in these operations, if the elongation is too low, the aluminum foil is likely to rupture or tear, which will cause packaging defects.
Test method
Usually, we use a tensile testing machine to test elongation. The samples of the 7mic aluminum foil material are prepared and cut as per the machine requirements and clamped at either end of the testing machine. The tensile force is slowly applied to the sample by the machine until the sample is ruptured. The elongation, i.e. the length of the test sample before and after the test.
Using a tensile testing machine, the tensile strength of 7mic aluminum foil, similar to elongation test, is measured. The strength of a material is derived from the highest force delivered to a material prior to fracture, which is divided by the cross-sectional area of the sample in question.
It is the maximum tensile stress that it can bear before rupture. Adequate tensile strength for 7mic aluminum folie enables it to resist the stress encountered at the various stages of its journey: from processing to packaging, transportation, and eventual usage. In food packaging, for instance, aluminum foil must be rugged enough to endure filling, sealing and storage. The tensile strength must be adequate; otherwise, the package will rupture, leading to food contamination or spoilage.
