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Sonoco adds 2 new EnviroFlex Paper pre-qualifications for How2Recycle labelling

August 15, 2023  By P&PC Staff

Sonoco has added two new cold seal structures to its family of EnviroFlex Paper products receiving How2Recycle Widely recyclable pre-qualification. EnviroFlex Paper Ultimate (ULT) 1.0 CS and Advanced (ADV) 4.0 CS reportedly bring cold seal properties to curbside recyclable paper packaging. This results from Sonoco’s ongoing efforts to develop and provide a range of innovative and sustainable packaging solutions to meet the challenging needs of consumer-packaged goods companies in today’s market.

The ULT line of paper-based packaging has high oxygen, moisture and grease barrier, ideal for moisture-sensitive applications like pet treats and products containing nuts. The ADV line provides optimal performance for medium-level oxygen and moisture barrier applications, like confections and powdered products. Adding a curbside recyclable, cold seal package to the EnviroFlex Paper line provides a sustainable option and protection for heat-sensitive goods, like chocolate confectionary products. Sonoco reportedly develops the EnviroFlex Paper line without chemicals of concern, such as PFAS and PVDC.

“Non-fibre components may cause disruption during the paper making process and impact the quality of recycled paper,” says Laura Buen Abad, senior director of technology and marketing. “Through partnering with our suppliers and leveraging our internal screening capabilities to test fibre repulping and recycling, our team has developed cold seal paper-based structures that allow for the clean separation of cold seal and paper fibres and result in excellent paper quality after the standard paper recycling process. This was recently confirmed through third-party testing.”


How2Recycle is a standardized label system that allows companies to accurately track and measure the recyclability of packaging. The on-pack labelling was created to provide consistent and transparent disposal information for U.S. and Canada consumers.

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