What are the advantages and disadvantages of plastic packaging materials?

I. Advantages:
1. Low density, high specific strength, can obtain a higher packaging yield, that is, "the packaging volume or packaging area per unit mass.
2. Easy to form, the required molding energy consumption is lower than that of metal materials such as steel.
3. Good transparency and easy coloring.
II. Disadvantages:
1. The seals on both sides of OPP plastic bags are easy to tear.
2. Pure PPO material has the disadvantages of poor melt fluidity and high price.
3. Long natural degradation time, some up to 100 years or more. The non-degradability of plastics leads to the long-term existence of its waste.
4. Serious waste, it is discarded after consumption, so plastic packaging waste has become an increasingly prominent environmental problem, forming the so-called "white pollution", which has caused great damage to the human living environment. Pressure. Extended information:
The hazards of plastics being difficult to degrade:

Plastics are widely developed in many fields due to their advantages such as light weight, high strength, stable chemical properties and low cost. The plastic industry is developing rapidly, but there is no proper disposal method for used plastics, and plastic garbage brings serious pollution to the natural environment. Most non-degradable plastics are developed and produced from low-density polyethylene (LDPE) and linear low-density polyethylene (LLDPE), followed by high-density polyethylene (HDPE), polypropylene (PP), polystyrene (PS) and polyvinyl chloride (PVC).
These plastics are generally eventually disposed of as solid waste, resulting in the formation of pollutants such as acid rain in the air, which harms our lives. The discarding of solid waste such as plastics will pollute the environment, deep burial will occupy land, and burning will pollute the air.