Lets Go Green: plastic recyling

Plastics are classified by their "resin identification code"—a number from #1 to #7 that represents a different type of resin. That number is usually imprinted on the bottom of your container; flip it upside down, and you'll see a recycling triangle with the number in the middle.

Here's a quick breakdown of plastic resin types:

#1 polyethylene terephthalate (PET or PETE)
Examples: Disposable soft drink and water bottles

#2 high density polyethylene (HDPE)
Examples: Milk jugs, liquid detergent bottles, shampoo bottles
#3 polyvinyl chloride (V or PVC)
Examples: Meat wrap, cooking oil bottles, plumbing pipes

#4 low density polyethylene (LDPE)
Examples: Cling wrap, grocery bags, sandwich bags
#5 polypropylene (PP)
Examples: Cloudy plastic water bottles, yogurt cups/tubs
#6 polystyrene (PS)
Examples: Disposable coffee cups, clam-shell take-out containers

#7 other (plastics invented after 1987; includes polycarbonate, or PC, and polylactide, or PLA, plastics made from renewable resources as well as newer plastics labeled "BPA-Free")
Examples: Baby bottles, some reusable water bottles, stain-resistant food-storage containers

What To Buy:

#2 HDPE, #4 LDPE and #5 PP: These three types of plastic are your best choices. They transmit no known chemicals into your food and they're generally recyclable; #2 is very commonly accepted by municipal recycling programs, but you may have a more difficult time finding someone to recycle your #4 and #5 containers.
#1 PET: Fine for single use and widely accepted by municipal recyclers; avoid reusing #1 water and soda bottles, as they're hard to clean, and because plastic is porous, these bottles absorb flavors and bacteria that you can't get rid of.
PLA: plastics made from renewable resources such as corn, potatoes and sugar cane and anything else with a high starch content; although you can't recycle these plant-based plastics, you can compost them in a municipal composter or in your backyard compost heap.

Plastics to Avoid:

#3 PVC: Used frequently in cling wraps for meat, PVC contains softeners called phthalates that interfere with hormonal development, and its manufacture and incineration release dioxin, a potent carcinogen and hormone disruptor.
#6 PS: Polystyrene-foam cups and clear plastic take-out containers can leach styrene, a possible human carcinogen, into food.
#7 PC: The only plastic made with bisphenol A, polycarbonate is used in baby bottles, 5-gallon water-cooler bottles and the epoxy linings of tin food cans. Bisphenol A has been linked to a wide variety of problems such as heart disease and obesity.

Shopping Tips

Plastics are classified by their "resin identification code"—a number from #1 to #7 that represents a different type of resin. That number is usually imprinted on the bottom of your container; flip it upside down, and you'll see a recycling triangle with the number in the middle.
When purchasing cling-wrapped food from the supermarket or deli, slice off a thin layer where the food came into contact with the plastic and store the rest in a glass or ceramic container or wrap it in non-PVC cling wrap.

Usage Tips

Avoid storing fatty foods, such as meat and cheese, in plastic containers or plastic wrap.
Hand-wash reusable containers gently with a nonabrasive soap; dishwashers and harsh detergents can scratch plastic, making hospitable homes for bacteria.
A "microwave-safe" or "microwavable" label on a plastic container only means that it shouldn't melt, crack or fall apart when used in the microwave. The label is no guarantee that containers don't leach chemicals into foods when heated. Use glass or ceramic containers instead.

Plastic Recyling is the process of recovering scrap or waste plastics and reprocessing the material into useful products, sometimes completely different from their original state. For instance, this could mean melting down soft drink bottles then casting them as plastic chairs and tables.

Each plastic type has different resin identification code ranging from 1 to 7 that can be found at the bottom of the plastic surrounded by a triangle of arrows (as seen below)

This to allow consumers and recyclers to differentiate types of plastics while providing a uniform coding system for manufacturers. So, before recycling, plastics are sorted according to their resin identification code.

Easy Plastic To Recycle

The easiest and most common plastics to recycle are made of polyethylene terephthalate (PET or PETE) and are assigned the number 1.

Examples: soda and water bottles, medicine containers, and many other common consumer product containers.

Once it has been processed by a recycling facility, PETE can become fiberfill for winter coats, sleeping bags and life jackets. It can also be used to make bean bags, rope, car bumpers, tennis ball felt, combs, cassette tapes, sails for boats, furniture and, of course, other plastic bottles.

Number 2 is reserved for high-density polyethylene (HDPE) plastics. These include heavier containers that hold laundry detergents and bleaches as well as milk, shampoo and motor oil. Plastic labeled with the number 2 is often recycled into toys, piping, plastic lumber and rope. Like plastic designated number 1, it is widely accepted at recycling centers.

Plastics Less Commonly Recycled

Polyvinyl chloride (PVC), commonly used in plastic pipes, shower curtains, medical tubing, vinyl dashboards, and even some baby bottle nipples, gets number 3.
Low Density Polyethylene (LDPE) number 4 includes wrapping films, grocery and sandwich bags, and other containers made of low-density polyethylene
Polypropylene (PP) number 5 used in processing reusable microwaveable ware; kitchenware; yogurt containers; margarine tubs; microwaveable disposable take-away containers; disposable cups, plates, tupperware, among other products, few municipal recycling centers will accept it due to its very low rate of recyclability.
Polystyrene (PS) number 6 and is ommonly used for egg cartons; styrofoam items such packing peanuts; disposable cups, plates, meat trays and disposable cutlery; disposable take-away containers and insulation. It is widely accepted because it can be reprocessed into many items, including cassette tapes and rigid foam insulation.

Hardest Plastics to Recycle

Last, but far from least, are items crafted from various combinations of the aforementioned plastics or from unique plastic formulations not commonly used. Usually imprinted with a number 7 or nothing at all, these plastics are the most difficult to recycle (Beverage bottles; baby milk bottles; electronic casing) and, as such, are seldom collected or recycled. More ambitious consumers can feel free to return such items to the product manufacturers to avoid contributing to the local waste stream, and instead put the burden on the makers to recycle or dispose of the items properly.

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