PE is available in different types, which are designated according to their density. HDPE stands for “high density polyethylene”, LDPE means “low density polyethylene” and LLDPE is “linear low-density polyethylene”. All PE types are very moisture and most organic solvents. PE is white or colourless and can be coloured in virtually any colour. Polymer of ethylene is one of the types of plastic that is produced in greatest quantity. PE is used for e.g. bags, film, multi-layer foil, beer and milk crates, pipes, fuel tanks, toys, household goods and many other things.