How many kinds of bag materials are used to pack food? What’s the difference?

by admin

materials are generally PE and PP

PE is soft and its mechanical properties are worse than pp. representative products include shopping bags, plastic wrap, garbage bags and so on in general supermarkets. PP is hard, anisotropic and has good mechanical properties. Its high temperature performance is better than PE, which represents bread bag

development history:

1 The commodity nature of packaging itself is becoming more and more obvious. It has become a special product that is no longer attached to commodity production. It is a widely used product that all commodities are inseparable from

2. Chinese scientists have developed an environmentally friendly plastic bag made of electrolyte. This environmentally friendly plastic bag can not only be harmlessly decomposed, but also be soluble in water

3. According to the explanation of scientists, the products made of polymer plastic materials commonly used in life will take hundreds of years to be completely decomposed and will exist on the earth for hundreds of years. According to the actual figures, 80% of the used plastic bags are finally transported to the garbage dump area for treatment like ordinary garbage, and only 7% of the plastic is recycled. This new environmentally friendly plastic bag will not release harmful substances in the decomposition process, and can even be decomposed into natural substances loved by insects, which is of great help to protect the natural environment

the materials are generally PE and PP
compared with non food packaging, it does not contain plastic additives and will not release toxic substances in the process of use. For example, plasticizer, which is more violent in the past, can cause cancer and is used in PVC packaging. The previous plastic wrap was PVC, but now it is gradually replaced by PE plastic wrap because of its insecurity
PE is soft and its mechanical properties are worse than pp. representative products include shopping bags, plastic wrap, garbage bags and so on
PP is hard, anisotropic (it is easy to tear when there is a notch), and has good mechanical properties. Its high temperature performance is better than PE, which represents a bread bag
I wonder if this answer meets your requirements.

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