Custom-made plastic packaging bags are a job that many manufacturers must do. Plastic packaging bags are a common type of flexible plastic packaging bags in our daily lives. For example, 90% of the things I see when I buy in supermarkets are Use this plastic packaging bag to pack the food for later sale. Many customers who order plastic bags for the first time do not understand the materials of plastic bags. What are the advantages of these plastic bags?
1. Bidirectional stretch polypropylene BOPP: high transparency, tensile resistance, cold resistance, heat resistance, -40 degrees -120 degrees;
2. Biaxially stretched polypropylene matting film: a film with low reflectivity, translucent, and matting effect;
3. Cast polypropylene CPP: good gloss, good transparency, heat sealability, cast high temperature film is suitable for cooking packaging;
4.聚乙烯PE:透明arent, good gloss, heat sealability, cold resistance;
5. Polyester film PET: with tensile strength, heat resistance of 60-150 degrees, good air tightness, suitable for cooking, no heat sealing;
6. Nylon PA or NY: colorless, high transparency, cold resistance, heat resistance, oil resistance, can be cooked. Easy to absorb moisture, no heat sealability.
When ordering plastic packaging bags, you should know that plastic packaging bags are made of the above single materials, such as OPP composite CPP. This combination is very suitable for the packaging of some small foods. Its characteristics are mainly high brightness, good transparency, and beautiful printing , Moisture proof, oxygen barrier.