Custom Colour and Pantone Matching for PP Containers
How colour actually gets into the container
PP pellets are natural (translucent, slightly milky). Colour comes from masterbatch — a pellet concentrate of pigment dispersed in a carrier resin — blended at 1–4% by weight.
Three consequences follow:
- The base resin affects the result. The same masterbatch on two suppliers' PP gives two slightly different colours.
- Wall thickness affects apparent colour. A 0.5 mm wall reads lighter than a 1.0 mm wall at the same let-down ratio.
- Food contact is regulated. Pigments must comply with EU 10/2011 and FDA 21 CFR 178.3297. Not every Pantone is achievable with compliant pigments.
The realistic range
| Colour | Feasibility | Notes |
|---|---|---|
| Natural / translucent | standard, no charge | shows fill level, cheapest |
| White | standard, no charge | most common for food service |
| Black | standard, no charge | premium deli look, hides scratches |
| Solid primaries (red, blue, green) | achievable | Pantone match, setup charge |
| Pastels | achievable but harder | colour drift is visible across batches |
| Metallics | limited | food-contact pigments restricted |
| Fluorescent | not recommended | unstable under heat and light |
| Clear / transparent | different resin path | requires a clarified grade, not just masterbatch |
If a customer sends a Pantone number, the honest answer is: we can match it to a ΔE we agree on, not to the number. ΔE under 1.5 is a tight match; 2–3 is commercially acceptable; above 3 the eye picks it up side by side.
Where colour costs money
| Item | Why it costs |
|---|---|
| Masterbatch setup | one-off, per colour |
| Minimum run | typically 500 kg–1 t of resin per colour, because the extruder must run clean |
| Purge waste | the transition from white to red wastes material |
| Batch consistency | a second production run needs a retained sample to match against |
| Food-contact testing | a new pigment may require a migration test |
The minimum run is the killer for small buyers. 500 kg of PP at 20 g per container is 25,000 pieces. If your order is 30,000 pieces in a custom colour, you are buying a colour run, not a container run — and the second order will cost less per piece than the first.
How to run a colour project without losing money
- Send a physical sample, not a Pantone chip. A chip on screen or paper does not account for gloss, wall thickness or the resin.
- Approve a moulded sample, not a colour plaque. The plaque lies; the container tells the truth.
- Retain the approved sample. Both sides keep one, sealed, dated. It is the only defence against a batch argument in month six.
- Agree the tolerance in writing — ΔE value, and under which light source (D65 is standard).
- Fix the resin source. If the factory changes PP supplier mid-programme, the colour shifts even with the same masterbatch.
Colour and the food-service buyer
Restaurant chains buy colour for brand consistency; distributors buy colour to differentiate their own label; supermarkets buy colour to signal tier (black = premium, white = standard, clear = fresh).
If you are quoting a chain, expect them to send a brand guide with Pantone references and expect them to reject a ΔE above 2. Price the risk in: a rejected colour batch is a full production run, not a repaint.
FAQ
Is black PP food-safe? Yes, with carbon-black-free compliant pigments. Carbon black itself is restricted in some food-contact applications — ask which pigment system the factory uses.
Can you print on a coloured container? Yes, but contrast drops. IML on black needs a white base layer; screen printing on red rarely reads.
Does colour change the price of the container? The moulding cost is the same. The masterbatch adds a small per-kilo cost, and the minimum run adds a one-off charge.
Can I get a clear PP container? Only with a clarified grade resin, not with masterbatch. It is a different material purchase, not a colour option — and the price difference is larger than most buyers expect.
Related reading
- Snap Lid, Hinge or Film Seal: Choosing the Closure
- IML vs UV Printing on PP Food Containers: Cost, Quality and MOQ Compared
- Round vs Square PP Container: Which Loads Better
Models covered on this site: 1000 ml PF-RW1000 · 1000 ml PF-SQ1000S · 470 ml PF-520 · see all models in this category.
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