When using plastic packaging bags, we need to choose clean and tidy ones. We can also smell the pungent smell of the plastic packaging bag. If the plastic packaging bag has a peculiar smell, it may be due to the use of defective materials. Our use of these products will bring us undesirable effects.
Plastic bags can prevent moisture. When we use them to store items, they can act as a moisture barrier. Due to its transparent appearance, we can see the items contained inside from the outside. It is also convenient for everyone to distinguish, and there is no need to open them one by one. We often use plastic packaging bags. We also need to be non-toxic, so that everyone can use it with confidence.
Plastic packaging bags are often used in daily life. We need to put plastic packaging bags in a suitable environment. This can extend its service life. Therefore, we also need to pay attention to it when using it.
Plastic packaging bags are common packaging in our daily lives. It can not only effectively preserve food, but also extend the shelf life of food. In addition, if plastic packaging bags are used, plastic packaging bags can facilitate people to transport different products to all parts of the world.
I believe many people know that, generally speaking, the plastic packaging bags we produce every day have no smell, but if there is any smell, there will definitely be problems, which will have a great impact on food safety. Let’s talk about plastic packaging bags. What is the cause of the smell of food plastic packaging bags?
One is the residual solvent: during the preparation process, the organic solvent on the food plastic packaging bag will not evaporate. When the “residual solvent” content is lower than the standard value, people’s sense of smell will not be affected, nor will it be affected by the taste of packaged food. If the content of “residual solvent” exceeds the standard, people will feel its presence in the sense of smell. When consumers open food bags with high residual solvents, they will smell a different “odor” from food.
The second is resin oxidation smell: extrusion compounding is another compounding process for compounding flexible packaging materials. In this process, the granular plastic resin needs to be melted at high temperature, coated on other substrates through a mold, and then cooled and molded. If the temperature is too high, the plastic resin will be oxidized and decomposed, resulting in the so-called “resin oxidation smell”, which can be eliminated by strictly controlling the production process conditions.
In order to extend the shelf life and facilitate transportation to various places for sale, many foods on the market will choose packaging bags for packaging, but not all packaging products are suitable for packaging. The materials we choose before packaging can also be said to be directly related to whether they are suitable for packaging food.