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Sunday, December 13, 2015

Transport Packaging: shifting from trash to valuable material

petro-wax cardboard box
destined for the landfill
As businesses move down the zero waste path, audits of remaining "trash" often reveal packaging is the main component of items destined for the landfill. For the food industry, petrowax-coated cardboard boxes for produce (fruits and vegetables) and protein (meats, seafood & poultry) are a significant contributor to a foodservice operator | grocery store's waste hauling charges.  

During recycling, OCC (old corrugated cardboard) is shredded, mixed in a water slurry, and processed into new paper through the recovery of recycled fibers. In the water-fiber mixture the petrowax agglomerates, clogging screens and other processing equipment; the result is decreased fiber recovery. Petrowax-coated boxes are a contaminant in OCC recycling.

With a strong commodity market, operators who bale OCC on-site often create a recycling profit center with OCC revenue more than offsetting the additional labor. On the other hand, petrowax-coated cardboard goes in the trash dumpster costing the operator waste hauling charges.

petrowaxed asparagus boxes
@ Piazza Produce
Global Green’s Coalition for Resource Recovery (CoRR) is currently surveying the corrugated cardboard industry to update the cost-savings and benefits related to the use of wax alternatives. Early survey calculations demonstrate over 1 million tons of petrowax-coated cardboard are currently going to U.S. landfills, costing about $50 million annually in hauling and landfill tipping fees. The equivalent recycling value is around $135 million for a net industry benefit of an estimated $185 million annually.

The CoRR Wholesale Packaging page details CoRR's impressive petrowax-free box research and successful pilots.

Ei Industry Expert ChemolCompany developed coating alternatives derived from natural, sustainable raw materials (vegetable oils and animal fats.) The alternative coating provides similar water resistance and wet strength characteristics to petrowax coatings.

Petrowax alternative coatings are cost-neutral to box manufacturers. The same equipment with little or no modification is used for the coating process. 

OCC recyclability is certified by the Fibre Box Association (FBA) who requires each box manufacturer pass a rigorous fiber recovery protocol. Boxes with Chemol’s petrowax-free alternative coating pass the FBA OCC recyclability certification.

CoRR's Lily Kelly @ podium
In 2012 Ei began work on petrowax-free boxes. The May 2012 Zero Waste in ACTION article, Waxed Cardboard = Landfill Destiny = $$ Lost, is the second most popular blog article with nearly 5,000 views. The article features the National Restaurant Association Show education session Challenging the Value-Chain to Transform Transport Packaging: Eco-Friendly, Wallet-Friendly Solutions orchestrated by Ei Chair Scott Seydel.

As a first step to understanding on-farm packaging practices, the Ei Team visited two South Georgia farms with on-site slaughter houses and packing operations. ZWA Blog post, Consumer Demand: A Powerful Voice to Affect Change, gives an overview of the farm tours and Ei's foray into Product Stewardship. As the title indicates, Ei intends to work with Industry Pioneers to invoke the powerful consumer demand to affect shifts in box coating practices.

In August 2013 a portion of the Indy Zero Waste Tours was dedicated to petrowax-free box education. Industry Pioneer Ted’s Montana Grill (TMG) joined the tour of Piazza Produce followed by the education session. The Ei FB album, 08-13 Indy Zero Waste Tours, gives a pictorial recap of the Indy tours.

Paula Owens w/ TMG during
Piazza Produce tour
The Ei PetroWax-Free Box Initiative was announced at the 2015 Annual Partner Meeting. The IMPACT Blog article, Ei 2015: Year of ACTION, recaps the meeting; PPT presentations are available on the Annual Ei Partner Meetings page. Chemol President Fred Wellons will take the initiative leadership role.

First action steps are forming the Industry Pioneer Team, including foodservice operators, grocery stores, and produce | protein distributors. Next Ei will recruit box manufacturers to serve as the initiative Industry Experts.

Industry Pioneers hold the key for transport packaging evolution. By using their power of consumer demand and working on common goals with their supply chain, Industry Pioneers will craft scenarios where businesses and the environment benefit. Petrowax-free boxes are an easy win for shifting transport packaging from trash to valuable material. 

29 comments:

  1. Thanks for this excellent summary of the "situation" in the industry as long ongoing efforts to remove petrowax (paraffin) reach success across the fresh and frozen food packaging industries. Most of the impregnated corrugated boxes are now being substituted and recently developed, equal-performance petrowax-free boxes are being employed in the most exacting applications, including ice brine cascading or injection system cooling.

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