What is PLA packaging, and is it the future of sustainable packing?

Solving the eco-dilemma in packaging: is PLA truly the answer?
PLA, or polylactic acid, is a plant-based plastic substitute gaining attention for its biodegradable properties.
While businesses face increasing pressure to adopt sustainable practices, PLA packaging emerges as a potential front-runner due to its plant-based origin and compostability. However, is it truly a sustainable solution?

Is PLA actually plastic or a better alternative?

Understanding PLA’s true nature is crucial for eco-conscious brands.
PLA mimics traditional plastics in many ways but is derived from renewable resources like corn starch.
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The Properties of PLA

PLA, crafted primarily from corn starch, sugarcane, or cassava, is a bioplastic that offers a compelling alternative to petrochemical-based plastics. With its main advantages being biodegradability and reduced carbon footprint, PLA has been championed as an eco-friendly substitute. Importantly, PLA boasts a heat resistance between 90-120°C, as opposed to conventional plastic polyethylene terephthalate (PET), which deforms beyond 70-100°C. Despite the advantages, potential downsides exist. For instance, PLA’s compostability is only achievable under industrial conditions, making its home compostability limited.

Is PLA packaging recyclable and strong enough?

Uncovering PLA’s durability and recyclability is key to assessing its practicality.
While PLA is biodegradable under specific conditions, its recyclability akin to traditional plastics remains limited.

PLA’s Practical Challenges

One of the most prominent issues surrounding PLA is its confusing recycling pathway. Unlike PETs, PLA requires separate processing and can’t merely be tossed into standard recycling streams. Misplacement could contaminate recycling batches. Furthermore, in comparison to traditional plastics, PLA’s structural strength fails over prolonged exposure to certain conditions, such as when used for liquid packaging. For emerging brands, particularly those within the food industry, this raises questions about long-term viability for diverse packaging needs.

Can PLA be used safely for food packaging?

Consumer safety is a priority; understanding PLA’s suitability is essential.
PLA, compliant with FDA and EU regulations, offers a safe barrier for specific food products.

Ensuring PLA Safety in Food Contact

When considering PLA for food packaging, its certification stands strong with both FDA 21 CFR 177.1520 and EU 10/2011 affirmations. These certifications promise that PLA can safely contact food without leaching toxic substances such as BPA, which is a concern in conventional plastics. Yet, the practical application invites a rigorous examination—particularly around PLA’s susceptibility to certain conditions like high humidity or prolonged heat exposure that might compromise integrity. These considerations are critical for brands like our clients facing strict retail standards.
In conclusion, while PLA packaging presents a compelling route toward sustainability, it is not a standalone solution. For companies aiming to utilize it, like Suzhou Kingsway Packaging’s clients, a comprehensive understanding of its applications, limitations, and best practices is necessary to navigate this novel landscape.