High Density Polyethylene (HDPE)
Polyethylene comes from oil. Almost every 1.75 kg of crude oil produces one kilogram of heavy polyethylene,
which is a heavy duty polyethylene capable of recycling.
And it should be said that the most common and most used and perhaps the first
kind of plastics that was produced was heavy polyethylene (HDPE).
The molecular molecule in this type of polymer is compressed,
which is the same factor that increases its density. Therefore, flexibility decreases sharply.
Although this type of polymer has less impact resistance than light polyethylene,
its resistance to chemicals, such as its resistance to fragile environmental stresses, is good.
Therefore, this kind of polymer is used in a variety of commercial products such as fuel storage containers,
open air chairs, toys, toys, high pressure transfer pipes, sewage pipes and ducts.
There is another type of high-density polyethylene (UHMWPE),
which is common in less volume. This type of polymer is smoldering and stiffer than other types of polyethylene.