Certified to return to nature.
cupcasa cups are paper with a plant-based PHA lining, independently certified home compostable by TÜV Rheinland. No PE, no PLA, no microplastics — nothing that lingers for centuries.
Compostable at home
No industrial facility required. Certified to break down in a backyard compost, not just in theory.
No PE, no PLA, no microplastics
The lining is PHA — a material microbes make and microbes eat — instead of a plastic film that never really goes away.
Verifiable, not just claimed
Independently certified by TÜV Rheinland, and the lining material is certified in its own right. Ask and we will send the paperwork — to a café, a customer or a city.
PE or PLA in the lining
home compostable by TÜV Rheinland
compost — not just industrial
Certified, not just claimed.
Certified home compostable — TÜV Rheinland
The cup is independently certified by TÜV Rheinland to break down in home and garden compost conditions.
PHA lining resin — TÜV Rheinland
The lining material itself (Beijing PhaBuilder Biotechnology Co., Ltd) is separately certified for home and garden composting, for industrial composting, and carries the Seedling mark.
No PE, no PLA, no microplastics — PHA lining
Paper cup, PHA lining. No polyethylene, no PLA — nothing that fragments into microplastics.
Plant-based lining
PHA is brewed from renewable plant oils by microbes — not petroleum.
Certifications available on request. Email hello@cupcasa.com and we will send the certification documents for the cup and for the lining material.
See the certifications.
We'll send the TÜV Rheinland documents to anyone who asks — no account, no form.