What do the Number Codes inside the “Recycling Triangle” really mean?

Posted: 19 November, 2008 in Article

Have you ever wondered what the number codes inside the “Recycling triangle” on the bottoms of plastic containers indicate? Well, it tells you the material that the container is made from.

The codes and materials are:

1 – Polyethylene Terephthalate (PET)
2 – High Density Polyethylene (HDPE)
3 – Polyvinyl Chloride (PVC)
4 – Low Density Polyethylene (LDPE)
5 – Polypropylene (PP)
6 – Polystyrene (PS)
7 – Other Plastics

The material in which it is made of actually determines how recycling may occur. For instance, many recycling operations will not accept Code 7 material, because the wide variety of plastics makes recycling difficult.

Plastics coded 1 and 2 are recycled the most (Ref 2). Other less recyclable plastics are polyvinyl chloride (PVC – code 3), low-density polyethylene (LDPE code 4), polypropylene (PP – code 5), polystyrene (PS – code 6) and any other plastic (code 7).


Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s