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Sustainability

Navigating Eco-Labels: What 'Green' Means for Adhesives

A magnifying glass hovering over various eco-friendly certification logos.

In today's market, sustainability is a powerful selling point, and product packaging is covered in a growing array of eco-logos and green claims. For brand owners, converters, and consumers, trying to decipher what these labels actually mean can be a confusing and often frustrating experience. This is especially true for industrial components like adhesives, where the sustainability attributes are technical and nuanced. A claim like 'eco-friendly' is vague, while a specific certification like 'BPI Certified Compostable' has a precise, verifiable meaning. Understanding the key certifications and terminology in the adhesives industry is essential for making genuinely sustainable choices and avoiding the pitfalls of 'greenwashing.'

One of the most important distinctions is between 'biodegradable' and 'compostable.' While they sound similar, they are very different. 'Biodegradable' simply means a material will break down over time by natural processes. However, this claim has no timeframe and doesn't specify the conditions. A plastic bag might be technically biodegradable, but it could take hundreds of years. 'Compostable,' on the other hand, is a much more specific and meaningful term. A certified compostable adhesive (e.g., meeting ASTM D6400 standards) is guaranteed to break down in an industrial composting facility within a specific timeframe (typically 180 days) into natural, non-toxic components. For packaging intended for organic waste streams, choosing a certified compostable adhesive is non-negotiable.

Another critical area is 'recycling compatibility.' This doesn't mean the adhesive itself is recycled, but rather that it doesn't interfere with the recycling process of the material it's on. For paper products, this means the adhesive must be 'repulpable' and/or 'de-inkable.' A repulpable adhesive dissolves or disperses in the recycling mill's water-based pulping process, preventing the formation of 'stickies' that contaminate the paper fibers. For plastic packaging, like PET bottles, a 'wash-off' adhesive is required. This type of adhesive releases cleanly from the plastic flakes in the hot caustic bath used by recyclers, allowing for the recovery of pure, high-value plastic. These compatibility features are certified by independent bodies and are vital for creating packaging that truly supports the circular economy.

Other important markers of a sustainable adhesive relate to its chemical composition and manufacturing. A 'water-based' adhesive is generally more sustainable than a 'solvent-based' one because it does not emit Volatile Organic Compounds (VOCs), which are harmful air pollutants. A 'bio-based' adhesive is one that is derived partially or wholly from renewable resources, like plants, rather than from finite fossil fuels. When evaluating a supplier, it's important to look beyond simple marketing claims and ask for specific data and certifications. At Kubron, we believe in transparency. We provide clear documentation for our products' compliance with food-contact regulations, their compatibility with recycling systems, and their chemical composition, allowing our customers to make informed, responsible, and truly sustainable procurement decisions.