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Food vacuum packaging bags are used very frequently inside our day to day life. Several households use vacuum bags to bundle foods in order to extend the life. The particular material of the particular vacuum bag straight affects its fresh-keeping performance. Next, let's take a look into the substance and characteristics involving the vacuum bag.<img width="405" src="">Commonly used food grade vacuum packaging materials are because follows:First, polyester-made vacuum bag:Polyester-made is a basic term for polymers obtained by polycondensation of a polyhydric alcohol and a new polybasic acid. Primarily refers to polyethylene terephthalate (PET), polyester (PET) vacuum bag. It is a colorless transparent, bright vacuum bag, which in turn is made regarding polyethylene terephthalate. The vacuum bag stuff produced by extrusion straight into a slab and even then biaxially worked out. Excellent mechanical qualities, high rigidity, solidity and toughness, leak resistance, friction resistance, high temperature in addition to low temperature resistance, great chemical resistance, petrol resistance, air tightness and aroma preservation. It is a commonly used barrier composite vacuum bag substrate. one particular. It is popular as the exterior layer material regarding retort packaging, plus has good making performance.Second, nylon vacuum bag:Nylon (PA) vacuum bag is an extremely tough vacuum bag with good openness, good gloss, large tensile strength (ts), high tensile strength, good temperature resistance, cold opposition, oil resistance and It is excellent in organic solvent resistance, abrasion level of resistance and puncture weight, which is relatively soft and has excellent oxygen barrier properties. That is ideal for packaging hard articles such as greasy food, meat products, fried foods, vacuum-packed food, and retort meals.A higher functionality nylon composite bag and a multi-layer co-extruded vacuum bag may be derived upon the basis of a nylon vacuum bag.The main components of nylon composite bag are PET/PE, PVC/PE, NY/PVDC, PE/PVDC, PP/PVDC. https://www.sunkeypackaging.com/ involving the composite resin bag along with the process is the base material, laminating stuff, barrier material and even heat sealing material., printing and safety layer coatings along with other components.The multi-layer co-extruded vacuum bag is mainly consisting of nylon, which usually is composed associated with PA, EVOH and even PE, PP, TIE along with other resins, and even adopts a shaped or asymmetric combination structure. Due to be able to the addition involving PA and EVOH, not only the particular barrier properties associated with the multilayer film to oxygen plus flavor, the composite resin peel strength, the particular environmental resistance along with the fresh-keeping storage time period are greatly better. It has the particular characteristics of zero pollution, high hurdle, strong function, minimal cost, small capacity ratio, high durability and flexible structure. That makes the production process of food packaging materials non-polluting. 3 rd, PE vacuum bag:Polyethylene (PE) is really a thermoplastic resin received by polymerizing ethylene. The transparency is leaner than that of nylon, the hands feels stiff, the particular sound is sharp, and it features excellent gas barrier, oil resistance and fragrance retention properties. Not suitable intended for high temperature and even refrigerated use, the purchase price is cheaper than nylon. Generally used regarding ordinary vacuum bag materials without exclusive requirements.Fourth, lightweight aluminum foil vacuum bag:Aluminum-plastic composite vacuum packaging bag (PET/AL/PE or PET/NY/AL/PE or perhaps PET/NY/AL/CPP), the major component is lightweight aluminum foil, opaque, silvery white, anti-gloss, great barrier, heat sealability, light blocking, large temperature resistance, low temperature resistance, oil resistance, aroma retention; non-toxic and tasteless; gentleness and other qualities. It is suitable with regard to moisture-proof, light-proof in addition to vacuum packaging regarding large-scale precision equipment and equipment, substance raw materials in addition to pharmaceutical intermediates. That adopts four-layer composition and has very good water-proof and oxygen-blocking functions. Aluminum foil vacuum bags are popular in foods, electronics, chemical and even other industries. Because the raw components of aluminum evade itself are fairly expensive, the price of vacuum will be relatively high.The above is the introduction in the common materials in addition to characteristics of vacuum packaging bags described by Pingfei Packing. I believe that after reading, numerous friends will have a general understanding when choosing their own item packaging bags.