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Plastics by the Numbers

Plastics by the Numbers

The well-recognized “chasing arrows” symbol we see on plastic containers and products does not mean the product is recyclable. The little number inside the triangle tells the real story.

Plastic resin codes

#1 – PET (Polyethylene Terephthalate)
PET is one of the most commonly used plastics in consumer products, and is found in most water and pop bottles, and some packaging. It is intended for single use applications; repeated use increases the risk of leaching and bacterial growth.
PET plastic is recyclable and about 25% of PET bottles in the US today are recycled. 
Products made of #1 (PET) plastic should be recycled but not reused.

2 – HDPE (High-Density Polyethylene)
HDPE plastic is the stiff plastic used to make milk jugs, detergent and oil bottles, toys, and some plastic bags. HDPE is the most commonly recycled plastic and is considered one of the safest forms of plastic. It is a relatively simple and cost-effective process to recycle HDPE plastic for secondary use.

3 – PVC (Polyvinyl Chloride)
PVC is a soft, flexible plastic used to make clear plastic food wrapping, cooking oil bottles, teething rings, children’s and pets’ toys, and blister packaging for myriad consumer products.
Products made using PVC plastic are not recyclable. While some PCV products can be repurposed, PVC products should not be reused for applications with food or for children’s use.

4 – LDPE (Low-Density Polyethylene)
LDPE is often found in shrink wraps, dry cleaner garment bags, squeezable bottles, and the type of plastic bags used to package bread. Some clothing and furniture also uses this type of plastic.
Products made using LDPE plastic are reusable, but not always recyclable. You need to check with your local collection service to see if they are accepting LDPE plastic items for recycling.

5 – PP (Polypropylene)
Polypropylene plastic is tough and lightweight, and has excellent heat-resistance qualities.
Polypropylene is recyclable through some curbside recycling programs, but only about 3% of PP products are currently being recycled in the US.
PP is considered safe for reuse.  

6 – PS (Polystyrene)
Polystyrene is an inexpensive, lightweight and easily-formed plastic with a wide variety of uses.
Recycling is not widely available for polystyrene products. While the technology for recycling polystyrene is available, the market for recycling is small. Polystyrene should be avoided where possible.

7 – Other (BPA, Polycarbonate and LEXAN)
The #7 category was designed as a catch-all for polycarbonate (PC) and “other” plastics, so reuse and recycling protocols are not standardized within this category. Number 7 plastics are used to make baby bottles, sippy cups, water cooler bottles and car parts. #7 plastics are not for reuse, unless they have the PLA compostable coding. When possible it is best to avoid #7 plastics, especially for children’s food.

Plastics with the recycling labels #1, #2 and #4 on the bottom are safer choices and do not contain BPA. PLA coded plastics should be thrown in the compost and not the recycle bin since PLA compostable plastics are not recyclable.

The plastics industry has conformed to regulations by applying the required codes to consumer products, but it is up to individuals to read and understand the codes. By understanding these simple classifications, we can best use plastics to our advantage while minimizing the health and disposal issues that may otherwise arise.

Reference: learn.eartheasy.com


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