There are 8.3 billion tons of plastics in the world - 6.3 billion tons are trash. Plastic represents 44% of the global packaging consumption. Its production started in the 50s and has been exponentially growing for the past seven
decades, under the moto “Plastic is Fantastic”. Yet, in 2020, there was a sudden change. The plastic production started to go down. The decrease was mostly coming from the European market.
We became aware that the use of plastic is hurtful to our planet. As the value proposition of plastic cannot be easily replicated, we are looking for alternatives to improve its circularity and replacing part of it with easier to
recycle materials such as glass, aluminum and paper. New bioplastics are also seeing the light of day.
What will be the future of packaging? How will we achieve shifting to more ecological solution? Which solutions are the most credible ones?
Towards plastic circularity
As plastic has become a central material for packaging and as it is hard to replace, the most straightforward option would be to improve its circularity. By redesigning and rethinking packages in the first place, they could be easier to
collect and recycle.
In 2020, 10.2Mt of plastic were sent to recycling facilities globally Yet, 93% of the global polymer demand is virgin plastic. The rest are mostly plastics recycled mechanically. The process of mechanical recycling itself does not
suffice a total shift into circularity, as it is more expensive than virgin plastic while having fewer applications.
To compensate for this lack of efficiency, the industry has been investing in molecular recycling, also known as advanced recycling. This method is commonly breaking down and purifying plastic waste to make it odorless, colorless and
deprived of contaminants. In other words, advanced recycling is looking for a solution to make a virgin like resin. The process is achieved by using chemicals, pyrolysis or other non chemical substitutes. The use of advanced recycling
is expected to grow to become up to 10% of the annual plastic use by 2040. Yet, one question mark remains. Is advanced recycling really sustainable? This process can be very consuming in terms of energy or very polluting in terms of
chemicals used in the process. In the following years, the sector will require a considerable investment and its sustainability would have to be evaluated.
Substitutes to plastic: the outsiders
While the plastic industry struggles to close its circularity loop, three other sustainable options are available in the packaging industry: glass, aluminum and paper.
Unlike plastic which is a pretty young invention in the history of humankind, glass has been found centuries ago. The first hollow glass container has been created by the Egyptians in 1500 B.C. Its use was highly democratized during the
Roman Empire, with the invention of the blowpipe. It was the beginning of glass as we know it today. Glass is a simple material, yet it has many great properties. It is infinitely recyclable without loss of material, it is odorless and
thus infinitely reusable. Its circularity loop has been closed long ago. In the end of the 19 th century, the first milk glass bottle was patented and along with it emerged milkmen.
They would come to one’s door, bring fresh milk in the morning and take empty bottles to reuse. It was a simple circular economy. We actually stopped using this closed loop with the apparition of refrigerators in the 30s. It is
only now that we are getting back to its simplicity with the apparition of bulk stores. Glass still has a significant share in the packaging industry with a market size of over USD 50bn.
While glass is often seen as a viable sustainable option, its recycling is more expensive and less ecological than the one of aluminum. Due to the weight of glass, emissions of transporting and cooling cans are 35% to 49% lower than the
one of glass bottles. For this reason, since the 80s, the secondary market of recycled aluminum has been growing. As a result, almost 75% of aluminum ever produced globally is still in use today. Aluminum cans on the market today
contain 73% of recycled content, which is 12 times more than PET and 3 times more than glass.
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