What Is HDPE Plastic?

By Eric Dontigney
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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.


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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.


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High-density polyethylene plastics are suitable for several manufacturing processes including injection molding, extrusion molding and blow molding.


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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.


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High-density polyethylene plastics have poor resistance to UV (ultraviolet) light. HDPE does not biodegrade in landfill settings, nor can it be composted.


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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.

About the Author

I have been working as a freelance writer recently. However, the majority of my recent work has been ghostwriting or required a non-disclosure agreement. As such, providing a truly meaningful representative piece is somewhat difficult. I have included the address to my blog on philosophy. It will naturally suffer from all the problems blog writing suffers from, but it should provide a sense of how I write should you choose to read it.