Plastic transparent vacuum bags are functional plastic bags commonly used for packaging food, medicines, electronic products, etc., with good sealing and fresh-keeping, moisture-proof and oxidation-resistant capabilities. The following are the main properties of plastic transparent vacuum bags:
1. Basic performance
1.1 Transparency: The bag is transparent, and the internal items can be clearly seen, which is convenient for display and identification
1.2 Vacuum: The vacuum machine can be used to evacuate air to form a sealed negative pressure environment, inhibit bacterial growth, and extend the shelf life
1.3 Barrier: It has good gas, moisture, and grease barrier capabilities to prevent oxidation and deterioration
2.4 Heat sealing: The heat sealing edge is firm and reliable, suitable for various vacuum packaging machines (flat type, external pumping type, etc.)
2.5 Low temperature resistance: It can be refrigerated and frozen (generally resistant to low temperatures to -40℃)
2.6 High temperature resistance: Multi-layer composite materials can be used for high temperature cooking (121℃) or microwave heating (not recommended for PE pure bags)
2.7 Puncture resistance: Strong mechanical strength and puncture resistance, not easy to break the bag, ensuring transportation safety
2. Common material structure
2.1 PA/PE (nylon + polyethylene)
Advantages: soft, resistant to suction, not easy to break, good transparency
Application: food vacuum packaging (such as meat, seafood, fruits and vegetables)
2.2 PET/PA/PE (polyester + nylon + polyethylene)
Advantages: higher strength, stiffness and barrier properties
Application: heavy objects, dry goods, sauce packaging
2.3 PA/CPP (high temperature resistant structure)
Advantages: can be boiled, steamed or sterilized at high temperature
Application: cooked food, pickles, stewed food and other high temperature processed foods
3. Advantages summary
3.1 Extend the shelf life of food (vacuuming to inhibit bacteria and mold)
3.2 Moisture-proof, mildew-proof, and anti-oxidation
3.3 Transparent and intuitive, convenient for display and sales
3.4 High sealing strength, not easy to leak
3.5 Supports printing customization (LOGO, pattern, text)
3.6 Applicable to various storage and transportation methods such as freezing, refrigeration, drying, and room temperature
