Top brands to develop 100% plant-based PET (BioPET)
Already December 2009 had marked game changing by Coca-Cola launching its innovative PlantBottle™ package.
With the 30 percent mono-ethylene glycol (MEG) portion made from plant-based resources, this was a big step toward reducing the company’s dependence on fossil-based materials for making its PET plastic packaging.
PET stands for polyethylene terephthalate and is used as a durable, lightweight plastic in a variety of products and materials including plastic bottles, apparel, footwear and automotive fabric and carpet.
Coca-Cola had made a first step in developing the PlantBottle™ packaging technology.
Partially made from plants the PlantBottle™ has demonstrated a lower environmental impact when compared to traditional PET plastic bottles.
This technology had been extended to Heinz which is currently licensing Coca-Cola PlantBottle™ for select Heinz ketchup bottles in the USA and Canada.
In joining Coca-Cola and Heinz, Ford, Nike and Procter & Gamble are expecting to leverage the research and development efforts and speed up the PET technology enhancement.
The Plant PET Technology Collaborative (PTC) is intended to provide positive change across multiple industries.
PTC members are committed to researching and developing commercial solutions for PET plastic made 100% from plants and will aim to drive the development of common methodologies and standards for the use of plant-based plastic including life cycle analyses and universal terminology.
These leading brand companies are making a commitment to champion and support research, expand knowledge and accelerate technology development to enable commercially viable, more sustainably sourced, 100% plant-based PET plastic while reducing the use of fossil fuels.
PTC member (Coca-Cola, Ford, Heinz, Nike, and Procter & Gamble) look forward to working together to meet each member’s future business goals and lead the charge toward 100% plant-based materials.
Benefits and Challenges of the bioPET
The original PlantBottle was made of PET derived in part from Brazilian sugar cane or molasses, which is used to make ethanol and then ethylene glycol (EG), a building block for HDPE.
Now natural health beverage company Odwalla Inc., Dinubia, California, USA, a subsidiary of Coca-Cola, plans to transition all of its single-serve bottles to PlantBottle packaging of HDPE made from 96% to 100% plant-based materials—again, sugar cane juice or molasses.
In addition, rigid packaging film supplier Klöckner Pentaplast Group, Gordonsville, Virginia, USA, has introduced TerraPET APET films made with up 30% plant-based material.
The company said this means ethylene glycol (EG) derived from ethanol also from Brazilian sugar cane.
Plant-based TerraPET film has an advantage over films containing recycled PET because it lacks the extra heat history which can produce black specks.
Although plant-based TerraPET costs a little more, users may be able to downgauge relative to using recycle-content films.
The competitiveness of bioPET is influenced by a multiplicity of factors beyond simply production economics and crude oil pricing.
The whole supply chain from biomass to the consumer and even the post-consumer supply chain play a role.
One of the bioPET building blocks, renewable MEG, is already made in India from ethanol sourced from Brazil.
Sugar cane is the feedstock of choice.
The production of building block biobased p-xylene has been demonstrated at small scale by the Gevo-Toray via bio-isobutanol and bio-isobutylene.
Virent’s aqueous reforming based concept offers an alternative pathway to biobased p-xylene.
Green performance and product cost of bioPET depend on resin product composition (30% versus 100% biobased) and the supply chain logistics and ecology.
Coca-Cola and other pioneers like Klöckner Pentaplast and Braskem has shown that 100% plant-based PET or bioPET are viable at industrial scale, with the support of other martket leaders such as Ford, Heinz, Nike and Procter & Gamble, the Plant PET Technology Collaborative (PTC) may create a new standard for world scale bio-plastics production.