What material material is suitable for vacuum packaging

What kind of material is suitable for the real food packaging bags? The question to two parts to explain, first of all, this material to accord with standard of food packaging, the second should be suitable for vacuum packaging process. Is the packaging material must meet the requirements of these two aspects, in order to be qualified. Food packaging standards, this standard is hard, if you don't understand, you can refer to the small make up the 'food packaging bags of what material is the requirements. Small make up today focuses on food bag material how to meet the vacuum packaging process. 1, food vacuum bag packs to the requirement of material mechanical properties in the process of pumping air into vacuum state, the pressure change, the outside world will continue to pressure in all directions for bags, oppression, stretching the bag, the bag close to food. This pressure is a stamina, acting on the bag. So all the vacuum bag material must be good stretchability ( Ductility) , fatigue resistance, impact resistance, such bags won't easily break and damage. The above material mechanical properties is a common to all food vacuum bag, most of the material possess such mechanical properties. Such as PE, PET, PP, NY and PA, PVA, PVC material has good ductility, fatigue resistance, impact resistance, fatigue resistance and PC is very poor, should not be used for the vacuum packing. 2, different food vacuum bag also has different requirements for material, such as oxidation, A food or request is not high, such as fresh vegetables, fruits, meat and other food in the fast pin, this kind of food vacuum bag will usually choose monolayer film material PE, PP, etc. B, easy oxidation, easy to be affected with damp be affected with damp such as food vacuum bag, with material requires high barrier property. Is usually choose the material of composite films. The compound high strength requirement for this type of material, if is not high, when the vacuum is very easy to appear statified phenomenon, the material is no longer with high barrier property. C, high temperature sterilization of food vacuum bag, insist on every part of the film, viscose material to high temperature. Commonly used with D, oil rich food, insist on vacuum bag material with good oil resistance. 3, food vacuum bag commonly used composite material is PET/PE, OPP/CPP, PET/AL/HDPE, PET/NY/RCPP, PET/AL/NY/RCPP meat OPP/RCPP oil vacuum bag boiled disinfection high-temperature resistant vacuum packs drink tea food high resistance oxygen into the vacuum bag PE moisture-proof vacuum food packaging label: food packaging bags
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