What materials are commonly used in food packaging? What are their respective characteristics?
Release time:
2023-05-06 17:22
In our daily lives, we may not have noticed the various food packaging materials and the characteristics they possess. So what materials are commonly used in food packaging? What characteristics do they possess? Let's take a look together:
Food packaging generally uses the following materials:
1. Plastic packaging
Plastic packaging materials have high-quality characteristics such as chemical inertness, insoluble, and strong toughness. Moreover, their raw materials are abundant, cost-effective, and have excellent performance. However, their stability is poor, they are not resistant to high temperatures, and are prone to deformation. Improper handling can cause environmental pollution and pose certain hygiene issues for certain foods. Therefore, their scope of use is limited to a certain extent. However, plastic packaging materials are still gradually replacing traditional packaging materials such as paper and glass, and are one of the most important packaging materials in food packaging.
2. Metal packaging
Metal packaging materials and containers are made of metal sheets or foils as raw materials, which are then processed into various forms of containers to package food. Due to the high-quality properties of metal packaging materials such as light resistance, high barrier resistance, high and low temperature resistance, seismic resistance, and recyclability, their application in food packaging is becoming increasingly widespread, becoming one of the four most important modern packaging materials. However, metal packaging materials have poor chemical stability and are not resistant to acid and alkali. Especially when they are used to package high acid food, they are easy to be corroded, thus affecting food flavor, which to some extent limits their use.
3. Glass packaging
At present, the usage of glass in China accounts for about 10% of the total packaging materials, especially one of the important materials in food packaging. Glass packaging materials have high-quality characteristics such as high sealing, high transparency, anti-corrosion, and easy forming. However, glass containers are heavy and easily broken, which is precisely this performance disadvantage that affects their use and development in food packaging, especially under the impact of plastic and composite packaging materials. However, due to the unique and irreplaceable high-quality properties of glass materials, their application in food packaging is still very widespread.
From the common food packaging materials mentioned above, we can conclude that food packaging needs to have high-quality characteristics such as sealing, corrosion resistance, light resistance, high and low temperature resistance, earthquake resistance, and drop resistance. However, no packaging material can have all these properties. Therefore, when choosing food packaging, it is necessary to determine based on the food you are packaging. (The article comes from the internet. If there are any copyright issues, please contact us promptly to delete it)
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What materials are commonly used in food packaging? What are their respective characteristics?
In our daily lives, we may not have noticed the various food packaging materials and the characteristics they possess. So what materials are commonly used in food packaging? What characteristics do they possess? Let's take a look together:
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