Posts Tagged ‘polystyrene’


Life cycle of Styrofoam, greener than you Think!

Thursday, December 8th, 2011


Styrofoam, just the sound of the word may send chills down the spines of many.

“Doesn’t that stuff NEVER break down?”

The answer is Yes. But there is more to the story. Styrofoam is actually Polystyrene aka Plastic, which has been infused by air to puff it up. We all know that air is a good insulator, so Styrofoam keeps your coffee warmer longer for this reason.

If you throw Styrofoam in the trash, then it will go to a landfill and will not break down for hundreds of years, maybe never! So what do we do about all of this foam waste?
Recycle it!

You got it! Styrofoam is actually very recyclable, but one of the least recycled materials because it is mostly air and therefore recyclers do not waste their time hauling it because the rates are too high.

Luckily, there are progressive companies like Dart Container in Mason, MI (outside Lansing) who have a polystyrene recycling facility and collect within a 100 square miles as well as accept deliveries of used Styrofoam. If you would like to learn more about Dart and their recycling initiative please read my article about it, which is based on a tour I took of their facility.

Recently, a life cycle analysis (LCA) was released by Cascades, Inc., which dispels many myths about the illustrious Styrofoam. The LCA demonstrates the vast capabilities of the material as well as calculating the ecological effects of its manufacture and use.

The study proves that polystyrene is actually a good choice for the environment, based on the fact that the impact of a material on the environment is determined by the type and amount of energy used to make it. Here’s what they found out:

  • Produced least amount of greenhouse gases throughout its entire lifecycle from raw material extraction to end-of-life.
  • Composed of 90 percent air.
  • Recyclable, though rarely recycled.
  • Using recycled polystyrene has tangible ecological benefits, using the recycled material results in less raw material extraction.

Designed to judge the environmental impact of Cascade’s food packaging trays, the LCA included 7 types of packaging materials.

  1. Foamed and oriented polystyrene (XPS and OPS) #6 Plastic.
  2. Standard and recycled polyethylene terephthalate (PET and RPET) #1 Plastic.
  3. Polylactic acid polymer (PLA) grouped with the #7 Plastic category.
  4. Polypropylene (PP) #5 Plastic.
  5. Molded pulp (made from recycled newspapers and telephone books).

The president of Cascades, Luc Langevin said:

“This analysis provides an new perspective on food packaging. The environmental performance of our trays is much better than popular belief. Polystyrene foam can now be part of our environmental packaging solution.”

“These findings have us taking stock of our current situation so that we can better understand our impact and thereby improve our efforts to reduce the environmental footprint left by our products.”

 

I hope that this post helps shed some light on the myth’s about Styrofoam. It is actually a very ecologically sound choice, thus why we use and recycle all of our Styrofoam cups here at Maxi. We hope that in the future, more companies and consumers start to understand the ecological benefits associated with choosing Styrofoam over paper cups. I urge you to please forward this post to someone whom you think would benefit from the information.

The full results of the LCA are available on cascades website.

Original article found though Packaging Diva published by JoAnne Hines.

You can read the original article by Cascade’s Inc. in The Sacramento Bee by following this link.


Dart Environment’s Recycling Facility – Styrofoam Recycling 101

Wednesday, June 1st, 2011

foam in bags and on conveyer belt

I recently got the chance to take a tour of Dart Container’s recycling facility. Dart has a statewide (and further) polystyrene (also known as Styrofoam) recycling program, where they collect used polystyrene from the food service industry, schools, county recycling drop offs; and people send them polystyrene to be recycled. Dart’s trucks go within a one hundred mile radius of Mason, MI (right outside Lansing), reaching forty-four county sites in twenty counties. Dart does this as a public service and they do not necessarily make money recycling, they do it because it is simply the right thing to do (being as they are primarily a new polystyrene manufacturer).

The process itself is quite amazing; they have a few employees who sort the trash before it gets processed. There are three different levels of polystyrene, which ends up as three different colors/qualities of usable resin. After being sorted the polystyrene is melted back down and then cooled in water. Little pellets are created, and they are slightly bigger than normal virgin plastic pellets and a little smaller than a pea.

Dart faces a few difficulties in this recycling system, first is transportation and second is finding suitable end-users, or basically what to do with all the plastic resin they reclaim. Lets start with transportation: recyclers get paid in weight; Styrofoam is 90% air and therefore, a truckload of polystyrene is not worth much to traditional recyclers.  Long haul drivers are expensive because of this. For these reasons, getting truckloads of Styrofoam can become very costly.

Finding end-users who can use this product and put it back out into the mainstream is a whole task in and of its self. Currently their recycled polystyrene is being made into picture frames, rulers, Frisbees, toys, it has even been used as filler underneath concrete. Still it remains a continuous effort to find enough end-users to take their product because some industries cannot use it, such as the food service industry. The regulations will not allow post-consumer content unless they were returned to them within forty-eight hours for the original point of use, which is usually impossible. Ideally, Dart would like to go directly to the end user, knowing where and what their product is turned into. Since they cannot find enough end users, they have to occasionally sell to brokers. These are people who are in the business of buying from product and selling it to end users for a profit.

Next lets dispel some myths about polystyrene; all foam is simply not the same. At Dart, they deal exclusively with #6 polystyrene, which was created and patented by Dow Chemical. Though Styrofoam is petroleum based, it actually takes very little compared to other plastic products. Only twelve to fourteen little teeny tiny beads go into a coffee cup. If you are interested in learning more about polystyrene, it’s life cycle analysis and how it stacks up compared to paper, corn and other plastic products please visit their website.

For more information visit please visit Dart Environment on Facebook here.

Below are some pictures of from my tour of Dart’s recycling facility, enjoy!

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