The reinforcing geosynthetics can be made of high density polyethylene, polyester, and polypropylene.

Low density polyethylene can be melted and reformed once separated from the other junk.

No. 2, high density polyethylene, is used in milk jugs and detergent bottles.

In 2004, however, the formula was changed to low density polyethylene due to environmental concerns about its chlorine content.

Many products use low density polyethylene formed into plastic bags or plastic boxes.

Culverts may be made of concrete, galvanized steel, aluminum, or plastic, typically high density polyethylene.

Cartons filled with short shelf life dairy products use board that are barrier coated on both sides with one layer of low density polyethylene.

Newspaper plastic bags are low density polyethylene (it is the least expensive).

The plastic slip sheet is made from recycled high density polyethylene or polypropylene materials.

A cattle guard form is a cast in place, light weight, mold made of high density polyethylene.