Previously published in Plastics Engineering and posted with permission from the Society of Plastics Engineers.
In 1996, the American Plastics Council (the predecessor to today’s Plastics Division of the American Chemistry Council) commissioned a white paper on plastic film. In its paper, the environmental consulting firm Headley Pratt noted that, compared to alternatives, commonly used plastic film typically:
These benefits, due primarily to plastic film’s high strength to weight ratio, were not really news to manufacturers of plastic film and their customers. What was newsy back then was the white paper’s overview of the nascent efforts to establish plastic film recycling programs, which at the time took place predominately at businesses that used large amounts of stretch wrap. Companies such as warehouse and distribution centers, bulk mail facilities, and grocery store chains had begun gathering large amounts of film over time and backhauling it to recycling facilities.
In all, approximately 190 million pounds of film were recycled in 1995 out of a production of 11.25 billion pounds, according to the R.W. Beck consulting firm. That added up to a 3 percent recycling rate.
So what happens to that billion pounds of plastic film after it has been collected?
Consumer participation in the recycling of plastic film was in even earlier stages than commercial recycling. Due to the flexible nature of plastic bags and wraps, plastic film products typically were not being included in the rapidly growing plastics curbside collection programs. That remains the case today.
The supermarket chain Giant and the (then) Mobil Chemical Company initiated some of the original efforts to engage consumers in plastic film recycling. In the early 1990s, Giant placed collection bins at its 75 stores throughout Pennsylvania, Maryland, Virginia, and West Virginia with signs urging consumers to return only grocery bags that were provided by Giant. The bags were back-hauled to Giant’s distribution center where they were baled and trucked to the Trex recycling facility in Winchester, VA. Trex (at the time owned by Mobil) used the grocery bags along with used stretch wrap to manufacture plastic lumber, which the company continues to do today.
The Giant program and similar programs proved successful, and this new retail collection system for consumer grocery bags has expanded over time into a widespread collection program at thousands of major retailers across the country, including grocery stores, Target, Wal-Mart, Lowe’s, and others. The program also evolved to collect many other types of consumer film, including bread bags, newspaper bags, dry-cleaning wraps, Tyvek®, and flexible product wraps, such as wraps for cases of bottled water.
Today, there are more than 18,000 store drop-off locations throughout the U.S. that collect plastic bags, wraps, and film for recycling. As a result of this expanded collection program and increased commercial recycling, more than one billion pounds of plastic film were recycled in 2012, according to Moore Recycling Associates – a more than fivefold increase in pounds since 1995. The EPA estimates that plastic film was recycled at a nearly 15 percent rate in 2012, the most recent year for which the agency has figures.
Interestingly, based on audits of the plastic film bales by Moore Recycling, a majority of film collected for recycling is not from grocery bags, but rather from product wraps and other film packaging.
The authors of the 1996 paper pointed out many difficulties associated with plastic film recycling, including: amassing enough volume, storage space, collection infrastructure, contamination, and moisture. While those obstacles remain, many have been overcome over the years through trial and error and pilot projects that enhance recycling efficiencies.
One important obstacle remains: consumer awareness of and participation in the recycling of plastic film. A 2014 survey by Plastics Make it Possible® found that while nearly two thirds of Americans say they recycle on a “regular basis,” only 32 percent say they have returned plastic shopping bags to stores for recycling.
A recently developed labeling program for packaging could help raise awareness and jumpstart recycling of plastic film, as well as other packaging. GreenBlue’s Sustainable Packaging Coalition in 2012 launched the “How 2 Recycle” label program that provides clear, simple, and nationally harmonized directions for what and where to recycle—right on the package.
For the first time, this label literally puts recycling instructions in the hands of consumers, right at the point of disposal. For plastic film packaging, the label informs consumers that clean and dry bags, film, and wraps should be taken to store drop-offs for recycling.
GreenBlue’s goal is to place the How2Recycle label on the majority of consumer goods by 2016. Many big names are on board including McDonald’s USA, ConAgra, Kellogg’s, Costco, General Mills, Microsoft, and Estee Lauder.
Some recent additions to the labeling program could help boost plastic film recycling:
Even though plastic film recycling is growing, substantial increases in consumer and commercial recycling will be needed to reach the higher recycling rates of plastic containers and other materials. Indeed, as the Plastics Division of the American Chemistry Council noted earlier this year, “existing infrastructures for collecting commercial film can be greatly expanded to capture significantly more of this material from the increasing number of businesses seeking recovery options for shrink film and transport packaging” (emphasis added).
So opportunities exist for both consumers and businesses to increase plastic film recycling. Hopefully both will take advantage of these opportunities.