Vacuum packaging bags have a variety of materials, the following are the characteristics of each material suitable for vacuum packaging: PE suitable for low-temperature use
RCPP is suitable for high temperature steaming use.
PA is to increase the physical strength, puncture resistance.
AL aluminum foil to increase the barrier performance, shading.
PET to increase mechanical strength, shape stiffness.
EVOH for high barrier properties.
Then according to the demand, the combination of various properties, there are also transparent, in order to increase the barrier performance using water-resistant PVA high-barrier coating.
High temperature steaming bags
Material: NY / PE, NY / AL / RCPP, KNY / PE
Application: Various kinds of cooked meat, high temperature sterilized food, curry, etc.
Product characteristics
Moisture-proof, temperature-resistant, light-shielding, fragrance preservation, toughness High-temperature steaming pouch (English name RetortPouch, RP for short) is a composite plastic film pouch capable of heat treatment, which has the advantages of both canning containers and boiling water-resistant plastic bags, and has proven to be an ideal packaging container after more than a decade of use. Japan Toyo canning company sold steaming bags, including aluminum foil called RP-F (135 ℃), does not contain aluminum foil transparent multi-layer composite bag called RP-T, RR-N (120 ℃). European and American countries to this bag called "soft can" (FlexibleCan or SoftCan).
Boiling bag with more than three layers of heat-resistant material composite, a representative boiling bag structure is: the outer layer of polyester film, for strengthening; middle layer of aluminum foil, for light, moisture and air leakage; inner layer of polyolefin material (such as polypropylene film), for heat sealing and contact with food.
Boiling bag
Material: PET / PE BOPA / PE PET / AL / PE
Product characteristics
Can withstand sterilization treatment at a temperature no higher than 106 ℃, no delamination and no leakage.
High heat seal strength, good puncture resistance and high impact strength.
Good printability and beautiful printing.
Good oil resistance.
Transparent vacuum bag
Currently the most used transparent vacuum bags are mainly divided into the following categories
1. Nylon co-extruded vacuum bag
PA/PA/EVOH/PA/PE. PP/PA/EVOH/PA/PE. PE/PA/PE
Product characteristics
①With excellent puncture resistance, ideal vacuum effect and high cost performance.
②Resistant to -20℃ freezing, with high oxygen and moisture barrier performance
③Clean and clean, non-hazardous and non-toxic, environmental protection and safety
④Transparent and beautiful
⑤Wide applicability. Small to single parts, large to the whole equipment can be used.
⑥Good printability, help to improve the image and grade of the vacuum packed goods.
Precautions
Avoid direct sunlight, contact with fire and corrosive substances.
Sealing temperature is adjusted at 180 degrees Celsius-200 degrees Celsius on the vacuum packaging machine. In the process of vacuuming, attention should be paid to proper temperature adjustment and low pressure adjustment to avoid air leakage caused by over-drying of vacuum.
2. Nylon composite vacuum bag
PA / PE. PA / RCPP. PET / PE. PET / RCPP
Nylon composite vacuum bag is the highest use rate of vacuum bags on the market, because nylon composite vacuum bags were the first to enter the market, initially began to use vacuum bags are using nylon composite vacuum bags. Nylon composite is laminated together layer by layer through the laminating machine, the middle needs to add glue. But because of this, nylon composite bags one of the biggest drawbacks is the dry weather, especially in winter, the vacuum broken rate will be much higher.
3. PE vacuum bags
PE bags as the most widely used plastic film bags, its own ductility, toughness is not as good as nylon, less suitable for vacuum, but compared to other materials PE bags are cheaper, for those customers whose requirements for vacuum is not very high can use PE bags vacuum, but the breakage rate and air leakage rate is also relatively high.
Post time: Mar-09-2022