Is PLA (Ingeo) Plastic-Free?
The honest chemistry, the performance trade-offs, and a straight verdict for founders deciding what their next line is actually made of.
Verdict: Not plastic-free, it is plasticPLA is a plastic, even though it is made from corn. Sold under names like Ingeo, PLA (polylactic acid) is a bio-based thermoplastic spun into fiber. Being plant-sourced does not make it plastic-free: it is a polymer that behaves like plastic, sheds microplastics, and only breaks down in industrial composting, not in your home or the ocean. Bio-based plastic is still plastic.
What is PLA (Ingeo)?
PLA, polylactic acid, is a thermoplastic polyester made by fermenting plant sugars, usually corn starch, into lactic acid and polymerizing it. Ingeo is the best-known branded PLA fiber. It is frequently marketed as a natural or plant-based fiber, but structurally it is a plastic polymer; the plant origin is the feedstock, not the material class.
- Fiber type
- Bioplastic (thermoplastic polyester from plant sugar)
- Source
- Fermented corn or sugarcane starch
- Biodegradable
- Only in industrial composting, not home or marine
- Sheds microplastics
- Yes
How is PLA (Ingeo) made?
Corn or sugarcane starch is fermented to lactic acid, which is chemically polymerized into long PLA chains, then melt-spun into filament exactly like petroleum polyester. The process replaces crude oil with plant sugar as the carbon source, which lowers the fossil input, but the output is still a synthetic thermoplastic that must be melted and extruded like any other plastic fiber.
How does PLA (Ingeo) perform?
Good moisture wicking, a soft hand, natural UV resistance, and lower flammability than some synthetics, which is why it appears in activewear and blends. Its limits are heat sensitivity, since it softens at low temperatures, so hot washing and drying degrade it, and the composting caveat: its end-of-life benefit only materializes in an industrial composter, which most consumers cannot access.
So, is PLA (Ingeo) plastic-free?
No. PLA is a plastic. Making the carbon come from corn instead of oil changes the feedstock, not the fact that it is a thermoplastic polymer that sheds microplastics and does not casually biodegrade. Its compostability is real but conditional on industrial facilities that reach high heat; in a home bin, a landfill, or the ocean it persists like other plastic. Bio-based is not the same as plastic-free.
Where you see it: Activewear blends, disposable textiles, tea bags, and compostable packaging.
The OHZEHN-TEX™ take
PLA is the cleanest illustration of a distinction we take seriously: plant-sourced and plastic-free are not automatically the same thing, and we will not pretend otherwise about any material. The value of a plant-derived platform like OHZEHN-TEX™ is displacing petroleum feedstock and its footprint; buyers weighing end-of-life and microplastic behavior should always ask for the specific test data rather than take any label at face value.
Frequently asked questions
Is PLA (Ingeo) a natural fiber?
No. It is a bioplastic. The raw material is plant sugar, usually corn, but it is chemically polymerized into a thermoplastic polyester and melt-spun like petroleum synthetics. It is more accurate to call it plant-based plastic than a natural fiber, which is closer to cotton, wool, or lyocell.
Does PLA biodegrade?
Only under specific conditions. PLA is industrially compostable, meaning it breaks down in facilities that sustain high heat and controlled microbes. In a home compost, a landfill, or the ocean it degrades very slowly and behaves like other plastic, including shedding microplastics. The compostability claim is real but depends on infrastructure most people do not have.