09-16-2020, 03:42 AM
Does aluminium foil roll have an expiration date? Not a few people are searching online for an answer to this question, and the answers are different. Some believe that the date should be one year, some two to three years, and others point out that as a metal material, the aluminium foil roll has no expiration date at all!
Reprinted from http://haomei-aluminium.com/en/News/Know...-date.html
An aluminium foil is made of metal aluminum or aluminum alloy by rolling equipment. The habit of thickness below 0.025mm is called aluminum foil paper, the thickness of which is below 0.2mm is called aluminum foil, and the thickness is more than 0.2mm. The density of aluminum or aluminum foil is 2.70 g/cm3. The temperature of 660 ° C. The boiling point of 2327 ° C, the appearance of silver-white light metal, ductility and malleability. An oxide film that prevents corrosion of metals can be formed in humid air. Theoretically, aluminium foil rolls are metal materials with no expiration date. In practical application, however, it is not always the case, for the rolls must be preserved carefully, otherwise they may get contaminated and become inappropriate packaging materials.
![[Image: 1-1Z9201FT5944.jpg]](http://haomei-aluminium.com/uploads/allimg/190920/1-1Z9201FT5944.jpg)
Many people believe that aluminium foil rolls have an expiration date because they are usually processed into various aluminium foil packaging bags and containers painted with various materials like ink and paints, and these painted materials are likely to get contaminated and damaged in storage, which further influences service life of the whole bag or container. In spite of this, aluminum foil is still the most suitable barrier material for modified atmosphere packaging. The combination of aluminum foil and PVDC, EVOH film will bring revolutionary progress to the food preservation process. Boasting high temperature resistance, low temperature resistance, and puncture resistance, it ensures the taste, nutrition and freshness of the food while extending the shelf life. It withstands the temperature range between 180 degree and minus 180 degree.
Metal material, high-grade appearance, low cost, high efficiency. Environmentally friendly and recyclable, paper cases and aluminum foil rolls are 100% recyclable, and the EVOH film can be decomposed into carbon dioxide and water.Reprinted from http://haomei-aluminium.com/en/News/Know...-date.html