Discuss what are the main food packaging material

In this custom packaging market, more and more people will be curious about food packaging material is made of what, what is the material? Small make up just to tell you today. Now food packaging bags of main material respectively are: PVDC ( Poly (vinylidene chloride) 、PE ( Polyethylene) 页( Polypropylene) 纽约( Nylon) EVOH ( Ethylene/vinyl alcohol copolymer) , aluminum plating film ( Aluminum + PE) And so on several major membrane. Film making and stretch film and blown film. But now market food bag is most main is the comparison of pp/PE are two materials that a little more. Because in the safety performance, both in comparison to be able to meet the food packaging. Let's take a look at about material problems need to be aware of some common sense: a, compared with non food packaging, PP and PE is not contain plastic additives, in use process will not release toxic substances. Second, in the PVC packaging, PVC cling film almost always use before, but because its not safety, are now gradually replaced by the PE cling film. Three, PE material to make the bags will be soft, poor mechanical properties compared with PP, the representative products are generally supermarket shopping bags, plastic wrap, bags and so on. Four, PP material is hard, anisotropy ( There is a gap is very easy to tear apart) , good mechanical properties, high temperature performance is better than that of PE, representative is bread bag, fruit bag E/Al/PE, Al/PE, etc. Five, general according to the material structure, the layer is PE or CPP, the outer is PA, PET, middle may EVOH, or PVDC, etc. , some with aluminum plating film or aluminium foil. Six, PE and CPP has a better heat sealing property is good, is easy to seal. Is printed on the PA, PET, in the outer layer, can print beautiful picture. PVDC, EVOH barrier property is good, prevent oxidation. Aluminum plating film, aluminum foil shading sex good, for not easy to see the light of the product is more appropriate. Packaging hint: in the face with a variety of food packaging materials performance of different, use is also different. General food packaging is not a single material, usually multilayer composite. Dry goods, frozen goods generally use PET/PE, nylon composite (like high-temperature cooking words pet / ny) RCPP etc. , or other composite material. Candy, dried fruit products, such as general/PP with transparent paper, kraft paper/PE/Al/PE, Al/PE, etc.
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