Sustainability in Motion: Introducing Bio-Based Closures for Flexible Packaging

With governmental regulations and environmentally aware consumers driving brands to enhance their sustainability efforts, the Fresh-Lock team offers an innovative and viable solution for reclosable flexible packaging.

While petroleum-based polymers have long dominated the flexible packaging sector, bio-based materials offer a path to help reduce the industry’s reliance on fossil fuels. As the availability of bio-based packaging components grows, the Fresh-Lock team is pioneering a line of closures that is an impressive answer to evolving environmental standards and consumer preferences.

Understanding the Positive Impact of Bio-Based Materials for Flexible Packaging

Traditional polyethylene (PE) originates from petrochemicals, while bio-based PE is sourced from renewable materials like plants. Our first closure in the Fresh-Lock+ Renewables Line begins with sugarcane.

Packaging Made From Sugarcane

After harvesting, the sugarcane is broken down and processed into bioethanol, which is then used to create ethylene. This ethylene is transformed into polyethylene resin, yielding a bio-based PE that meets manufacturer and consumer performance standards for our fully recyclable, particle-resistant zipper.

Since bio-based flexible materials closely mimic the characteristics of traditional PE, similar disposal strategies can be achieved. This versatility allows brands to transition to bio-based closures while continuing to address their unique packaging needs and sustainability goals. Moreover, since this bio-based closure originates from a plant that absorbs carbon from the atmosphere during its growth cycle, its origin contributes to carbon negativity in nature.

Bio-Based Packaging Recyclability vs. Compostability

While it’s common to assume that “bio-based” implies the package should be “biodegradable,” it’s important to understand that not all bioplastics are able to naturally decompose. Rather, bio-based plastic is a broad term covering several categories of plastic materials with differing production and disposal methods.

While the first closure in our Fresh-Lock+ Renewables line is a recyclable closure that can be paired with recyclable films for a fully recyclable pouch, bio-based packaging can be produced for any preferred end of life strategy. Given the current infrastructure for recycling compared to composting, recyclable bio-based packaging offers more accessibility for many consumers.

That said, some products may not lend themselves to recyclability. Products like coffee or cheese, which leave behind residues that can be challenging for consumers to clean from the package, may be better suited for compostable packaging. Home compostable closures help offer an eco-friendly solution for these kinds of soil-safe products until commercial compost infrastructure can catch up.

Despite the good intentions of brands, manufacturers, and consumers, landfills remain a reality. In cases where recovery streams are unavailable, misunderstood, or simply overlooked, even recyclable or compostable packages could end up in the landfill. To combat this issue, continued education is key. Clearly labeling packages as bio-based and providing detailed disposal instructions can help empower consumers to make informed choices and handle packaging responsibly.

Charting the Course: The Future of Flexible Packaging

In flexible packaging, there is no one-size-fits-all solution. Overall, the industry is continually embracing advancements in sustainability, aiming for waste and carbon emission reduction. While bio-based materials show great promise, traditional petrochemical-based PE remains widely available and cost-effective in comparison. Gradual transition, through line extensions and consumer education, along with blending bio-based materials with traditional PE, is crucial.

Bio-based materials are a standout choice for brands striving for a greener future. Discover more about our Fresh-Lock+ Renewables line and stay updated on our latest bio-based closure developments by reaching out to the Fresh-Lock team today.