HDPE (high-density polyethylene) plastic is a linear polymer (a polymer that does not branch or cross-link) generated from ethylene using a catalyzing process.
HDPE plastic has several applications, including packaging for foods (milk and snacks, for example) and cleaners. It is also used for pipe fittings, trays and hinges.
High-density polyethylene plastics are suitable for several manufacturing processes including injection molding, extrusion molding and blow molding.
HDPE plastic is resistant to acids, bases, alcohol and vegetable oils, as well as being impact resistant. It is also resistant to sustained heat of about 110 degrees Celsius.
High-density polyethylene plastics have poor resistance to UV (ultraviolet) light. HDPE does not biodegrade in landfill settings, nor can it be composted.
HDPE is a recyclable material and is falls under No. 2 of the plastic resin code. Recycled HDPE is used in pallets, drainage pipes and packaging.