Polyhydroxyalkanoates (PHA) are a family of biopolymers produced naturally by microorganisms through the fermentation of renewable organic materials such as plant oils, starches, or food-industry by-products.
Unlike conventional plastics derived from fossil fuels, PHAs are fully bio-based, non-toxic, and biodegradable in a wide range of environments — including soil, freshwater, and even marine ecosystems.
What makes PHA truly extraordinary is its natural compatibility with the living world. For a material to be marine-degradable — the most demanding and selective condition under which decomposition can occur — it must have deep biological roots within nature’s own cycles.
Since PHA is a byproduct of microbial metabolism, nature recognizes it as part of its own chemistry.
When exposed to microorganisms and naturally occurring enzymes, it breaks down into water, carbon dioxide, and biomass, leaving no microplastic residue behind.
Because of this profound ecological harmony, PHA has emerged as one of the most scientifically and environmentally promising alternatives to petroleum-based polymers in packaging, consumer goods, and agricultural applications.
Yet despite its potential, PHA has historically remained difficult to industrialize — its molecular complexity and thermal sensitivity make large-scale processing a formidable challenge.
At RecyLoop, we set out to turn that challenge into an opportunity.
Through years of dedicated in-house R&D, our engineers developed a proprietary compounding solution that optimizes PHA’s flow behavior and adhesion properties, enabling its efficient use in extrusion-coating processes.
The result is CoraLoop — a high-performance PHA-based compound that can be applied to paper substrates using standard industrial equipment, without fossil additives or plastic blends.
This breakthrough transforms PHA from a delicate laboratory material into a commercially viable, scalable, and sustainable coating solution.
Using this advanced extrusion-coating process, CoraLoop forms a water- and grease-resistant barrier that adheres seamlessly to paper fibers while maintaining full recyclability.
As a result, paper cups, trays, and containers coated with CoraLoop can be recycled in conventional paper streams and are fully compostable and marine-biodegradable.
Even if a CoraLoop-coated package were to escape waste systems and reach natural waters, it would biologically decompose — not persist as plastic pollution.
PHA coatings embody the principles of a circular bioeconomy:
resources are derived from renewable sources, used responsibly, and returned harmlessly to nature at end-of-life.
By merging biotechnology with precision material engineering, RecyLoop’s CoraLoop technology bridges the gap between industrial performance and ecological balance.
Every cup, lid, or wrapper made with CoraLoop contributes to a future where sustainability is no longer an aspiration, but an achievable, commercial reality.
A future where packaging doesn’t burden the planet — it becomes part of nature’s own cycle of renewal.
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