Is It Plastic? Every Material in Your Kitchen, Answered

MicroPlastics Research DeskEditorial team

August 15, 2026

13 min read

Last reviewed: August 15, 2026 by the MicroPlastics Research Desk. Submit a correction or see our editorial standards.

Quick Answer

Nineteen of the thirty materials in an ordinary kitchen are plastic. Most people can name about six. Polyester, nylon and acrylic are plastic — they are fabrics made from the same polymer families as bottles and packaging. Melamine is plastic, a thermoset resin, which is why unbreakable picnic plates are not ceramic. PLA is plastic — “plant-based” and “compostable” describe where it came from and where it can go, not what it does in your cup. Silicone is the genuinely interesting one: it is a synthetic polymer, but built on a silicon–oxygen backbone rather than a carbon chain, so it is not a plastic in the usual sense — more heat-stable than any of them, and far less studied. And “bamboo fibre” tableware is usually bamboo powder bound in melamine resin: a plastic dish with bamboo in it. The whole list is below, each one linked to the full profile.

Wondering about a product we didn't cover? Scan it and get the same answer in five seconds.

Scan my product

Is it plastic? Thirty common household materials — polyester, nylon, silicone, melamine, acrylic, PLA, bamboo composite and more — sorted into plastic and not plastic

Key Takeaways

If it is a synthetic fabric, it is plastic. Polyester, nylon and acrylic are textiles spun from polymers — the same chemistry as packaging, in fibre form.
Melamine is plastic. A thermoset resin with a wood-flour or paper filler. Unbreakable picnic and kids’ plates are moulded plastic, not ceramic.
“Compostable” does not mean “not plastic”. PLA is a polymer and fragments like one; the claim is about origin and disposal, not behaviour in use.
Silicone sits in its own category. A siloxane, not a carbon-chain polymer. More thermally stable than any common plastic — and much less researched, which cuts both ways.
“Bamboo fibre” is usually melamine. Bamboo powder bound in resin. The EU has withdrawn these from sale because bamboo is not an authorised filler for plastic food-contact materials.
The resin code only appears on some things. Numbers 1–7 cover rigid packaging; fabrics, coatings and tableware usually carry nothing at all.
“Is it plastic?” is the wrong final question. What matters is whether it sheds — and that is driven by heat, abrasion and age, not by the polymer name.

The short version

common household materials that are plastic: 19 of 30common household materials that are plasticcounting fabrics, coatings and tableware, not just packaging
MicroPlastics material profiles, August 2026
resin codes, covering only rigid packaging: 7resin codes, covering only rigid packagingpolyester clothing, non-stick coatings and melamine plates generally carry no code at all
ASTM D7611 resin identification coding system
things that actually drive shedding: 3things that actually drive sheddingheat, abrasion and age — the polymer name matters far less than how you treat it
Li et al., Nature Food, 2020 — polypropylene release under heat
when EU nail products must stop using added microplastics: 2035when EU nail products must stop using added microplasticsthe longest transition of any category, against 2027 for rinse-off cosmetics
Regulation (EU) 2023/2055

The fast answer

Every material below links to its full profile — what it sheds, under what conditions, and what to use instead.

Common household materials, sorted (checked August 2026)
Material	Plastic?	What it actually is
Polyester	Yes	PET in fibre form — the same polymer as a drinks bottle
Nylon	Yes	Polyamide; utensils, bristles, activewear
Acrylic	Yes	PMMA — Perspex, and the powder in acrylic nails
Polypropylene (#5)	Yes	Tubs, caps, straws; the most common cap plastic
Polyethylene / HDPE / LDPE	Yes	Bags, bottles, film, squeeze tubes
PET (#1)	Yes	Single-use bottles and most food trays
PVC (#3)	Yes	Cling film, tubing, some flooring
Polystyrene (#6)	Yes	Foam cups, takeaway boxes, disposable cutlery
Polycarbonate (#7)	Yes	Polymerised from BPA itself; the legacy hard-bottle plastic
Tritan copolyester	Yes	BPA-free by structure; the current default drinkware plastic
ABS	Yes	Appliance housings, toys, press-on nails
Melamine	Yes	Thermoset resin — unbreakable picnic and kids’ plates
EVA	Yes	Foam mats, shoe soles, flexible tubing
Polyurethane	Yes	Foam, coatings, stretch fibres
PLA “bioplastic”	Yes	Plant-derived, still a polymer, still fragments
PTFE (Teflon)	Yes	Fluoropolymer non-stick coating
Silicone	Sort of	Siloxane backbone, not a carbon chain — synthetic polymer, not a plastic in the usual sense
Bamboo composite	Depends	“Bamboo fibre” tableware is usually bamboo powder in melamine resin
Natural rubber / latex	No	Tapped from a tree; an elastomer, not a plastic
Stainless steel	No	Inert alloy — but check the lid
Aluminium	No	Metal, though cans are usually lined with a polymer
Cast iron	No	Metal; seasoning is polymerised oil, not plastic
Glass	No	Inert; the zero-shed reference point
Ceramic and stoneware	No	Fired mineral; check glazes rather than polymers
Hardwood	No	Solid timber — unlike most “composite” boards
Paper and paperboard	No	Cellulose — but cups and cartons are frequently plastic-lined
Cotton and linen	No	Natural fibres; blends are the thing to read for
Beeswax wrap	No	Cotton and wax; the genuine cling-film alternative

Full profiles: polyester, nylon, acrylic, polypropylene, polyethylene, HDPE, LDPE, PET, PVC, polystyrene, polycarbonate, Tritan, ABS, melamine, EVA, polyurethane, PLA, PTFE, silicone, bamboo composite, natural rubber, stainless steel, aluminium, cast iron, glass, ceramic, hardwood, paperboard, cotton and linen, beeswax wrap.

The four that catch people out

Melamine. If a plate is light, unbreakable and slightly warm to the touch, it is not ceramic — it is melamine-formaldehyde resin. It is genuinely plastic, and it is the standard material for picnic sets and children’s tableware. It also has a specific weakness: heat and acid both increase migration from it, which is why it should never go in a microwave.

PLA. Marketed as plant-based and compostable, and both are true — of its origin and its disposal route. Neither is a claim about what it does while holding your iced coffee. It is a polymer, it fragments like one, and “compostable” in practice usually means an industrial facility most councils do not operate.

Bamboo composite. The one where the marketing is actively misleading. A bamboo cutting board is timber strips glued with resin. But “bamboo fibre” cups and plates are typically bamboo powder bound in melamine — a plastic dish with a plant filler. The EU has withdrawn these from sale in several member states, because bamboo is not an authorised filler for plastic food-contact materials and the composites released more melamine and formaldehyde under heat than plain melamine did.

Polyester. The one that surprises people most, because it does not look like plastic at all. It is PET — the same polymer as a water bottle — extruded into fibre. Roughly speaking, wearing a polyester fleece is wearing several hundred bottles’ worth of the same material, and it sheds every time it is washed. See microplastics in laundry for what to do about it.

Use the App

Point your camera at it instead of guessing

Most products are three or four materials at once — a Tritan body, a polypropylene cap, a silicone seal, a printed coating. Scan any product with MicroPlastics to identify what it is made of and get a 0–100 score.

Get the MicroPlastics app

How to tell when nothing is labelled

The recycling triangle with a number in it — the resin identification code — only appears on rigid packaging, and even then inconsistently. It covers seven categories:

1 — PET. Clear, glossy, slightly flexible. Drinks bottles, food trays.
2 — HDPE. Opaque, waxy. Milk jugs, detergent bottles.
3 — PVC. Cling film, tubing. The one to avoid near heat.
4 — LDPE. Soft, floppy film. Bread bags, squeeze bottles.
5 — PP. Rigid, heat-tolerant, slightly springy. Tubs, caps, straws.
6 — PS. Brittle or foamed. Takeaway boxes, disposable cutlery.
7 — Other. A catch-all: polycarbonate, Tritan, ABS, PLA and more all land here, so the number tells you almost nothing on its own.

Everything outside rigid packaging — clothing, non-stick coatings, melamine plates, foam, sealants — usually carries no code at all. For those, the care label, the feel and the sound are better evidence than the packaging: melamine rings dull rather than sharp, polyester feels slick and does not crease like cotton, and a genuinely ceramic plate is heavy for its size.

Why the question matters less than you think

Having sorted thirty materials into plastic and not plastic, here is the honest conclusion: knowing the polymer name tells you surprisingly little about your exposure.

A polypropylene tub used cold and hand-washed sheds very little. The same tub microwaved weekly for three years sheds a great deal. The drivers are always the same three things — heat, abrasion and age — and they dominate the differences between polymers. That is why a scratched, elderly “good” plastic is worse than a new “bad” one, and why the most useful habit is not memorising resin codes but noticing which of your things are old, scratched, and repeatedly heated.

What to actually do

Retire anything scratched. Surface damage is fragmentation already in progress, whatever the material.
Move heat off plastic first. Microwaving and dishwashing do more than swapping polymers ever will. Never microwave melamine.
Check the lid, seal and coating separately. They are almost always different materials from the body, and usually softer ones.
Read “bamboo fibre” as “melamine” until the packaging proves otherwise.
Treat “compostable” as a disposal claim, not a materials one.
Wash synthetics less, cooler, and fuller. The fabric in your wardrobe is plastic, and laundry is its main release route.

Frequently Asked Questions

Is polyester plastic?

Yes. Polyester is polyethylene terephthalate — PET, the same polymer used for single-use drinks bottles — extruded into fibre instead of moulded into a container. That is why it does not absorb water, does not crease like cotton, and sheds microplastic fibres in the wash. Roughly speaking, a polyester fleece is the fibre form of the same material as the bottle in your fridge.

Is nylon plastic?

Yes. Nylon is a polyamide, a synthetic polymer used for cooking utensils, brush bristles, hosiery and activewear. In cookware it matters because nylon utensils soften and abrade against hot pans, and in textiles because nylon sheds fibres during washing much as polyester does.

Is silicone plastic?

Not in the usual sense, and this is the one genuine grey area. Every common plastic is built on a carbon backbone; silicone is a siloxane, with a backbone alternating silicon and oxygen atoms. It is a synthetic polymer, but a structurally different class, and it tolerates temperatures no carbon-chain plastic survives. The honest caveat is that silicone has been studied far less than PET or polypropylene, so its better reputation partly reflects less scrutiny rather than proven superiority.

Is melamine plastic?

Yes. Melamine tableware is melamine-formaldehyde, a thermoset resin usually containing a wood-flour or paper filler. It is the standard material for unbreakable picnic sets and children’s plates, which is why they feel light and warm rather than heavy and cold like ceramic. It should never be microwaved: heat and acidic foods both increase migration of melamine and formaldehyde from the surface.

Is bamboo tableware plastic?

Usually yes, despite the name. A solid bamboo cutting board is timber strips bonded with resin. But "bamboo fibre" cups, plates and children’s tableware are typically bamboo powder bound in melamine resin — a plastic item with a plant filler. Several EU member states have withdrawn these products because bamboo is not an authorised filler for plastic food-contact materials, and testing found the composites released more melamine and formaldehyde under heat than conventional melamine did.

Is PLA or “compostable” plastic still plastic?

Yes. PLA is a polymer made from plant sugars rather than petroleum, so "plant-based" is accurate about its origin and "compostable" is accurate about one disposal route — typically an industrial composting facility, which most household waste streams do not reach. Neither claim describes how it behaves while in use, and it fragments into microplastics much as conventional polymers do.

Does the recycling number tell me what a plastic is?

Only partly, and only on rigid packaging. Codes 1 to 6 map to specific polymers — PET, HDPE, PVC, LDPE, polypropylene and polystyrene — but code 7 is a catch-all containing polycarbonate, Tritan, ABS, PLA and others with very different properties, so it tells you almost nothing. Clothing, non-stick coatings, melamine tableware and foam usually carry no resin code at all.

Sources

MicroPlastics Research Desk (2026). Material profiles: composition, shedding behaviour under heat, abrasion, fat and acid, and evidence grade for 30 common household materials. MicroPlastics.
European Commission (2023). Regulation (EU) 2023/2055 amending REACH Annex XVII entry 78 — synthetic polymer microparticles and staggered transition periods by product category. EUR-Lex.
European Commission / RASFF (2024). Bamboo-melamine food contact materials: bamboo is not an authorised additive under Regulation (EU) No 10/2011; market withdrawals across multiple member states. Food Packaging Forum.
Li Y, et al. (2020). Microplastic release from the degradation of polypropylene feeding bottles during infant formula preparation. Nature Food.

Turn one-time scans into an exposure trend line

The web shows you the research; the app remembers what you scanned and tracks whether your overall microplastic exposure is going down month over month. Free to start with 3 scans on iOS.

Download on the App Store

Free on iOS
3 free scans
No sign-up
Result in seconds

“Really cool to scan stuff around the kitchen and see what's actually in it. The swaps it suggests are realistic.” App Store review · 5.0★

Android · early access

Get the launch email the day Android opens.

One email. No spam. We send when the Android app is in the Play Store, and never again unless you opt in.

Related Research

Microplastic Testing: What a Lab Can Actually Measure — and Why "None Detected" Isn't Clean

Micro-FTIR stops seeing particles around 10 micrometres and micro-Raman around 0.5. Much of the research linking microplastics to human tissue sits below both limits — so a clean water result is a statement about the instrument, not about your water. What labs measure, what mail-in kits deliver, and the test that does not exist at any price.