What bags are used for vacuum packaging of food?

We can see vacuum packaging bags for food everywhere in our daily lives, but many customers who are purchasing vacuum packaging bags for the first time do not know how to choose. When consulting, they may ask, what bags are used for food vacuum packaging? Below, Jinde Packaging will give you a detailed introduction.
Food vacuum packaging bags need to have the following characteristics:
1. Strong mechanical performance, explosion-proof and tear resistant;
2. Air blocking ability, waterproof and moisture-proof;
3. Green and environmentally friendly, in line with food packaging usage standards;
4. Strong temperature tolerance and oil resistance.
 
Common materials for food vacuum packaging bags:
1 PE： Polyethylene, a polymer formed by the polymerization of ethylene. Suitable for use in low-temperature environments;
2 Al： Aluminum foil film has good barrier properties, can block light, and is suitable for products that need to prevent light exposure;
3 RCPP： Polypropylene cast high-temperature steam resistant film has good high-temperature resistance, is not easily deformed at high temperatures, and has excellent puncture and impact resistance. Commonly used for steaming and cooking food, often combined with nylon film or polyester film for packaging soup or meat products;
4 PET： Has good mechanical performance and good printing effect.
 
Tips for selecting food vacuum packaging bags:
1. Food vacuum packaging bags are divided into single-layer and multi-layer
Ordinary vacuum packaging bags are made of single-layer PE material, which can be vacuumed. However, the damage rate and air leakage rate of vacuuming are relatively high, but the cost is low. Many customers choose single-layer PE bags as vacuum bags to save costs. Good vacuum packaging bags are made of multi-layer composite materials, such as nylon/PE. This is a two-layer composite bag, which is sturdy and will not leak during vacuum pumping. Currently, most food packaging bags use multi-layer composite bags as vacuum pumping bags.
2. Selection of Material Thickness and Special Properties for Food Vacuum Packaging Bags
When packaging different foods, different thicknesses and properties of vacuum packaging bags should be used. For heavy products, thick materials should be selected, while for light products, thin materials should be selected to save costs. Of course, the thicker the material, the higher the cost, but it will also be more sturdy. Different foods have different properties, for example, salt baked foods with high oil content should choose materials that are resistant to oil, kimchi foods with high salt content should choose materials that are resistant to acid and alkali, and products that require high-temperature disinfection or high-temperature steaming should choose materials with strong high-temperature resistance.
 
What kind of bags are used for vacuum packaging of food? Introduction: When wholesaling packaging bags, first inform the packaging bag manufacturer of the requirements, what products are used, what special requirements the products have, and so on. Only by understanding the specific details can we choose vacuum packaging bags that meet the food requirements and avoid problems during use. For more topics, please follow the official website of Jinde Packaging, or consult our hotline at 15902743510