Does Cling film / plastic wrap have microplastics?
The short answer
Yes, and this is the highest surface-area-to-food contact in a normal kitchen. Film is stretched — mechanical stress — then pressed against the entire surface of the food, often fatty food, for days. PVC film adds a plasticiser question on top.
Why Cling film / plastic wrap scores 66
Total contact: the film touches every exposed surface of the food, not just the base
Stretching the film at the moment of wrapping is mechanical stress applied directly at the contact face
Cheese, cured meat and other fatty foods are the classic use and the worst case, because many additives are lipophilic
Microwaving under film, which the packaging often permits, combines heat with total contact
Where the 66 comes from
Five components, added. The page renders the parts rather than a stored total, so the number cannot disagree with the reasoning behind it.
- Packaging contact
- 28 / 30
- Use conditions
- 20 / 25
- Measured release
- 10 / 25
- Polymer behaviour
- 8 / 10
- Processing
- 0 / 10
What material touches the contents, over how much surface area, for how long. Glass and steel score near zero here; a film pressed against fatty food scores near the top.
Heat, abrasion, flexing, repeated opening, reuse beyond design life. The same bottle scores differently in a fridge and in a hot car.
What a laboratory actually counted, for this product or its category. A high number here means real particles were measured, not that the material looks suspicious.
How this specific polymer behaves — brittleness, fat solubility of its additives, thermal stability, whether it is a polymer named in existing restrictions.
What happened before you bought it. Retort sterilisation inside the pack, hot-filling, and pressurised brewing all happen at the most migration-favourable moment.
What we don't know
No published study has counted particles released from cling film into food. That is a large gap for a product this ubiquitous. The score is built from the mechanism — surface area, stretch, fat solubility — and from the general packaging-migration literature, not from a film study.
This section is on every page in the database, including the ones where the answer is comfortable. How evidence grades work →
Better options
Ordered by how much they change, not by how much they cost.
A plate over the bowl
free, and it solves the majority of everyday uses
Glass container with a lid
for anything going in the fridge for more than a day
Beeswax wrap
for cheese, where film is at its worst
Check the one in your kitchen
This page scores Cling film / plastic wrap as a product. Formulations, packaging and suppliers change, and the specific item you own has its own condition — a scratched pan and a new one are not the same object. Scan yours for a score built from what is actually in front of you.
Scan my food storageSources behind this score
Each with the finding we use it for and the limitation that finding carries — because a study quoted without its boundaries is how this subject got so noisy.
- report2026
Earth Action 2026 — Estimated roughly 1,000 tonnes of microplastics migrate from packaging into food and drink annually — about 130 mg per person per year — with PET bottles responsible for around a third, and found UV exposure can raise release up to 100×.
Limitation: An industry-funded modelling exercise, not a laboratory study, and not peer-reviewed. We use it for the relative ranking of formats rather than for any absolute number.
- peer-reviewed2020
Sobhani 2020 — Simply tearing, cutting or twisting open plastic packaging generates microplastics at the opening — 10–30 nanograms per 300 cm of tear.
Limitation: Mass, not particle count, and it does not follow whether those particles land in the food. It is the reason cap and seal design belongs in an exposure score at all.
- peer-reviewed2022
Zangmeister 2022 (NIST) — Nylon bags, LDPE food-storage bags and similar single-use plastics shed trillions of sub-100 nm particles per litre in ordinary contact with water.
Limitation: Deionised water at controlled temperature. Nanoparticle counts are inherently large numbers; the study is about their existence and quantity, not their fate in the body.
Frequently Asked Questions
Does Cling film / plastic wrap have microplastics?
How was the Cling film / plastic wrap score of 66 calculated?
Is Cling film / plastic wrap safe?
Why is the confidence only 60%?
Scored next to this
Ziploc storage bag
Low-density polyethylene (LDPE) film
Grade B · 72%
Pyrex glass storage container
Glass body with a polypropylene lid
Grade C · 60%
Polystyrene takeout container
Expanded or rigid polystyrene (#6)
Grade B · 74%
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