The types of plastic packaging bags

plastic bags is essential in our life, let's learn about the classification of the plastic bags, for your reference:

*, the dosage of polyethylene plastic bags, plastic products *, * important materials, is currently the world's ideal contact food bag materials, food packaging bags on the market in general are made of this material. Polyethylene light transparent, with the ideal moisture, oxygen resistance, acid and alkali resistance, heat sealing and other advantages, and non-toxic, tasteless, odourless, food packaging hygiene standards.

second, PVC/PVC, is currently the second largest in the world, second only to polyethylene plastic, plastic packaging bags, PVC bag, compound bag, vacuum bag ideal choice, can also be used in books, folders, documents such as cover packaging decoration, etc.

third, low density polyethylene is the dosage of the plastic packaging and printing industry * big variety, suitable blow molding processing into tubular membrane, suitable for food packaging, cosmetic packaging, fiber products packaging etc.

4, high density polyethylene, cooking, heat resistant to cold freezing resistance, moistureproof, prevent gas, isolation performance is good, and not easily damaged, strength of low density polyethylene 2 times, is a commonly used material of plastic bags. The characteristics and requirements of the retort pouch:

( 1) Health, non-toxic, no smell, determination of residual solvents value is less than 5 mg/m2; After high temperature cooking without harmful ingredients decomposition and precipitation.

( 2) Gas barrier property: good resistance, resistance to wet, good mechanical strength.

( 3) Heat resistance: cooking, instant high temperature resistance.

( 4) The contents resistance: resistance to medium ( Sour, hot, salt, alkali) , good oil resistance and oil absorption rate is 1%.

( 5) Good appearance: smooth and no fold, bubble and foreign body attached.

( 6) Good mechanical strength, compression resistance, asked not broken after high temperature cooking bags, discoloration, deformation, no delamination.