In summary, the advantages of using Aluminum Clips are:
First, it is particularly resistant to oxidation and corrosion. Secondly, the strength and hardness can reach the standard, and it is not easy to break. Third, it has good ductility and can be made thin, saving materials and reducing weight. Fourth, cheap. Aluminum is a metal that is easy to recycle, and its value is higher than steel. It can achieve good circulation and prevent waste. If replaced by plastic products, the first is insufficient strength, and the second is non-recyclable and difficult to degrade, but it will cause more serious pollution.
First of all, the ham sausage should be intestinal-shaped rather than flat-packed. The packaging has a certain heat shrinkage rate and looks more beautiful, so there are not many sealing options. Secondly, aluminum itself is not a rare metal, and the domestic annual output is close to 40 million tons. Finally, although you think it was wasted on aluminum, the packaging of ham sausage is called Sausage Casing. The material is compounded by PVDC. This should be the best preservation technique currently in existence. In foreign countries, PVDC has been used as a plastic wrap instead of polyethylene.
At present, the domestic level is still at the PE level. He kept this information. The aluminum surface is oxidized in air to form a relatively stable and dense oxide film. Moreover, it is relatively light. Aluminum is a metal that is easily recycled, and its recovery rate is higher than that of steel. It can achieve good circulation and prevent waste. If you switch to plastic products, the first is insufficient strength, and the second is non-recyclable and difficult to degrade, which will cause more serious pollution.
Aluminum has a dense structure, lightweight texture and beautiful colors, so it is usually used as a packaging material, especially for substances that emit a long fragrance. Therefore, we often see that most flavoring substances are packaged in aluminum foil on the outside, mainly because aluminum foil has a dense structure and the aroma will not evaporate in a short time. However, when used as food packaging, the surface in direct contact with the food does not easily become aluminum foil because it causes passivation.
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