Get to Know Aqueous BioCups
An aqueous coating is a transparent, water-based type of lining that is applied to paperboard during the manufacturing process. 'Aqueous' or 'water-based' refers to the technique of using water to ensure that the lining is watertight when it dries. This allows your coffee cup to hold your coffee without leaking or getting soggy, while reducing emissions and the material used to make the cup.
It contains a small fraction of synthetic polymers compared to other cups on the market, which creates a food-safe and waterproof protective layer once the coating is dry.
Aqueous coating is applied like paint – it is printed onto the paper, where it is absorbed into the paper fibres.
Yes, all home compostable cups have a waterproof coating. If your cup did not have a waterproof coating, it would get soggy like normal cardboard when you add coffee to it.
Linings like PLA bioplastic or regular PE plastic are glued or sprayed onto the paper, leaving a coating or top layer. On the other hand, Aqueous cups don't have an additional layer since the waterproof coating is already embedded in the fibres of the paper using the water-based dispersion technique. Aqueous cups also contain less than one-third of the waterproof material needed in a PLA-lined alternative.
Shop Home Compostable Cup Solutions
Single Wall Stone Aqueous BioCups
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Double Wall Stone Aqueous BioCups
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Single Wall Black Aqueous BioCups
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Double Wall Black Aqueous BioCups
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Plant Fibre BioCup Lids
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BioCup Accessories
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The Future Home Compostable Solution
We are committed to bringing you the most sustainable and innovative materials and will be converting all our BioCup ranges across to Aqueous.
BioPak is currently working on the next steps for cup linings beyond Aqueous. Within 12 months we plan to launch a plant-based and home compostable PLA bioplastic and a new revolutionary material PHA – an innovative material that will be certified to biodegrade even in marine settings. Choose certified home compostable Aqueous cups in the meantime, and we will migrate you across to better alternatives as they are released.


