Vacuum bag definition: It is a packaging method in which the product is put into an air-tight packaging container, and the air inside the container is removed, so that the sealed container reaches a predetermined degree of vacuum.
Bag type: three-side sealing bag, (one side is transparent, the other side is aluminized)
Common materials: PE, RCPP, PA, AL, PVA, PET, PA+PE, PA+RCPP, PET+PE, PET+RCPP, PET+PA+PE, PA+AL+RCPP, PET+PA+AL+RCPP , PET+PA+PE, etc.
Thickness: customized according to material and customer requirements
Size: customized according to requirements
Production cycle: 7-15 days, please contact us for sales for specific information.
Application: high temperature sterilization food, ham, curry, roast eel, roast fish and meat stewed products.
Principle of vacuum bag
The mildew and spoilage of products are mainly caused by the activities of microorganisms, and most microorganisms need oxygen to survive, and the vacuum bag is used to extract the oxygen in the packaging bag and the product cells, so that the microorganisms lose the “survival environment” “To preserve food.
How to choose the right vacuum bag material?
When it comes to vacuum packaging materials, the essential thing is the classification of materials. The following are the characteristics of materials suitable for vacuum packaging:
Among them, PE is suitable for low temperature use, and RCPP is suitable for high temperature cooking;
PA is to increase physical strength and puncture resistance;
AL aluminum foil is to increase the barrier performance and shading;
PET, increased mechanical strength, excellent stiffness.
Then according to demand, combination, various properties, there are also transparent, in order to increase the barrier performance, use water-resistant PVA high barrier coating.
Composite types are generally: PA/PE or PA/RCPP, PET/PE or PET/RCPP also have three or four layers, in order to increase the material properties: PET/PA/PE, PET/AL/RCPP, PA/AL/ RCPP, PET/PA/AL/RCPP
Advantages of vacuum packaging bags
High barrier: Co-extrude the film with the high barrier properties of different plastic materials to achieve high barrier effects on oxygen, water, carbon dioxide, and odor.
Stable performance: oil resistance, moisture resistance, low temperature freezing resistance, quality preservation, freshness preservation, odor preservation, and can be used for vacuum packaging, aseptic packaging, and inflatable packaging.
Low cost: Compared with glass packaging, aluminum foil packaging and other plastic packaging, co-extruded film has a greater cost advantage to achieve the same barrier effect. Due to the simple process, the cost of the produced film products can be reduced by 10-20% compared with dry composite films and other composite films. 4. Flexible specifications: it can meet your different needs for different products.
High strength: The co-extruded film has the characteristics of stretching during the processing. After the plastic is stretched, the strength can be increased accordingly. You can also add nylon, polyethylene and other plastic materials in the middle to make it have a composite strength that exceeds the general plastic packaging. Existence of delamination and peeling phenomenon, good flexibility and excellent heat sealing performance.
Small volume ratio: The co-extruded film can be vacuum-shrinked packaging, and the volume-to-volume ratio is close to 100%, which is unmatched by glass, tin cans, and paper packaging.
Pollution-free: no binder is added, no residual solvent pollution problem, green and environmental protection.
Vacuum packaging bag moisture-proof + anti-static + explosion-proof + anti-corrosion + heat insulation + energy saving + single perspective + UV isolation + low cost + small volume ratio + no pollution + high barrier effect.
Please contact our sales to customize the vacuum packaging bag now!