Compostable Packaging - An Exploratory Dialogue on Fluoro-Chemical Risks
BLOG By Gary Robinson, Synaptic Packaging, www.SynapticPackaging.com
July 12, 2018
In this BLOG we are exploring packaging components in compost and seeking to expand our understanding of the specific concerns relating to fluro-chemicals and toxicity.
Packaging in compost is a very active and exciting topic. Depending on your perspective, you might see this as an innovation opportunity, or as a difficult challenge contributing to contaminates in the compost. In our previous BLOG ‘Playing in the Dirt// Composting and Packaging Innovation’ we explored the amazing benefits and value of composting, and further expanded on how packaging can play an important role in capturing food organics.
At Synaptic Packaging, we are finding two underlying strategies behind the exploration of compostable packaging solutions. One strategy is tied to a very focused objective for recycling organics in the food service sector. The other strategy is to advance a more holistic vision where packaging has a known, limited, life-cycle and can be safely returned to the earth after consumption (the banana peel vision of packaging if you will). Both of these strategies are being actively pursued through advanced R&D. Today, we are going to focus on packaging’s role to recycle organics in food service.
Let’s start by revisiting the basics. The four primary functions of a package…
Communicate, Protect, Dispense, (and), Dispose
Each of these attributes can be individually analyzed for a packaging system to enhance performance and increase value to the consumer. For today’s topic, we will focus our attention on ‘Protection’ and ‘Disposal’.
In food service, the packaging provides functional protection to both the consumer and the quality of the food. The food we consume has many different characteristics from temperature, moisture, viscosities, oil content, and steam to name a few. Moisture and oils are a common component in nearly all of the food we eat, and so grease and moisture barrier is a high valued attribute of a packaging system.
Plastics, and oil based polymers tend to perform well in providing moisture and grease barrier. Unfortunately, these oil based plastics are not natural, renewable, and generally not compostable (some exceptions apply). Bio-polymers, which typically are industrial compostable can provide effective moisture and grease barrier. These bio-polymers however generally perform better at lower temperatures and some food service applications require high temperature performance. Bio-polymer technology is advancing rapidly, so it is best to investigate application specific details before putting too much weight in that generalization.
Paper, and fiber based packages are very functional, economic, are often preferred by consumers, and tend to perform well in composting. To provide the necessary oil and grease barrier however, these paper fibers need to be treated. Without treatment, the fibers tend to wick the moisture and grease through the package rather quickly. Fluoro-chemicals are a very common treatment utilized today to provide this barrier.
So, what are fluoro-chemicals? The Environmental Protection Agencies defines these products as Per- and polyfluoroalkyl substances (or PFAS for short). This group of man-made chemicals historically contain chains of eight carbon atoms attached to fluorine and other atoms. These fluro-chemicals were initially used world-wide back in the 1940’s. In more recent years, the use of fluoro-chemicals have undergone extensive research and the supporting science has shown these chemicals to be very persistent and accumulating over time both in the human body and in the environment. (1)
In most industrial commercial applications, these fluoro-chemicals are utilized in high-value, long life products. For example they are commonly used in consumer hard goods and textiles for non-stick surfaces and water repellence. Some common products would include non-stick cookware, water repellent clothing, sports gear, and industrial machine surfaces. Part of their intrinsic value is that they are very robust, effective, and reliable.
In consumer packaging, the use of fluoro-chemicals presents a slightly different dynamic given the short consumer use of the materials, the direct contact with food, and the accumulating volume of waste associated with disposable consumption. About ten years ago the chemical industry sought to self-regulate to address the emerging concerns of toxicity of fluoro-chemicals. In doing so, they voluntarily enacted measures to phase out older long-chain formulas with 8 carbons or more, and replace them with less pervasive, shorter-chain chemistry. In January 2016 the FDA formally revoked the use of the older long-chain PFAS chemistry. (2)
In January 2018 the Center for Environmental Health (CEH) conducted an independent audit on food service packaging and found that 58% of the samples analyzed contained fluorinated chemicals(3). The CEH analysis clearly identified the broad presence of fluoro-chemicals in food service packaging, however did not expand on the details of long vs. short chain chemistry.
While writing this BLOG, the Center for Disease Control (CDC) just released the findings of extended research in an 852 page analysis on the risk of fluorinated chemicals. According to Plastics News, the CDC is now recommending that consumer exposure levels to fluorinated chemicals be reduced 10x below the current recommendations previously issued by the Environmental Protection Agency. (4)
Circling back to our discussion topic on composting; the issue of fluoro-chemistry in food service packaging is back on the table as it relates to compost. Since it has been identified that these materials are commonly used as an oil and grease barrier in packaging, and the chemistry is very persistent and accumulating in the environment, many feel strongly that this chemistry should not be permitted in compost soils. At the 2018 US Compost Council, the perspective was heavily discussed and leadership at Biodegradable Products Institute (BPI) indicated intent to ban the use of fluoro-chemicals in compostable packaging. In the discussion BPI further indicated an intent to require validation testing that the package component be free from fluoro-chemicals before issuing approval for a BPI compostable certification mark.
//Moving Forward - Recommendations from Synaptic Packaging on a course of action.
At Synaptic Packaging we embrace risk based analysis and helping companies develop the appropriate response plans. The challenges discussed above present a very classic risk profile. There is a growing body of knowledge, an element of uncertainty, and an element of perception. As a forward perspective we’d like to provide some general guidance to our readers and then suggest that you contact Synaptic Packaging direct to explore the details of your specific circumstances.
Validate the facts with your supply chain. As a first measure, have all of your converting partners submit formal certification of FDA compliance for direct food contact inclusive of disclosure on the content of fluoro-chemicals.
Conduct third party independent and surprise audit of your supply chain for compliance. This is most especially true if your company is utilizing an international supply base.
Be pro-active and part of the solution to advance next generation chemistry. Synaptic Packaging has developed qualified alternatives and is happy to work with your team to help evaluate and scale alternative solutions with functional performance and a lower risk profile.
References and Additional Readings:
(2) Fluoro-council, June 21, 2018, https://fluorocouncil.com/applications/food-packaging/
(3) Center for Environmental Health, ‘Avoiding Hidden Hazards’, April 2018, https://www.ceh.org/wp-content/uploads/CEH-Disposable-Foodware-Report-final-1.31.pdf
(4) Toloken, Steve, ‘US study urges stricter PFOA safety levels’, Plastics News, June 21st, 2018, http://www.plasticsnews.com/article/20180621/NEWS/180629978/us-study-urges-stricter-pfoa-safety-levels