We have compounded black masterbatch at our Huizhou plant since 2010. Tell us your base resin, target jetness and process, and we match a grade — then prove it with a free sample on your own line. No trading-company markup in between.
A quick, buyer-side view — what goes in, what comes out, and why the grade matters more than the price tag.
Black masterbatch is a concentrated blend of carbon black pigment dispersed in a carrier resin. You meter a small percentage (the let-down ratio) into your natural or virgin polymer during extrusion or injection, and the whole batch comes out a uniform black. The "master" part means it is pre-mixed at high shear, so the carbon black is already broken up and wetted — you avoid agglomerates, specks and streaking that raw pigment would cause.
Three variables decide whether a grade works on your line: the carrier resin (it should match or be compatible with your base polymer), the carbon loading (how deep the black is), and the let-down ratio (how much masterbatch per hundred parts of resin). Get these wrong and you get poor dispersion, weak weld lines, or a color that drifts lot to lot. Get them right and you get a stable black that passes audit and looks the same on every part.
A short selection checklist we use with every new buyer. Send us the answers and we return a grade code plus a sample.
PE and PP carriers for polyolefin parts; ABS for automotive trims; EVA for cable and foam. A carrier close to your base polymer disperses cleanly and avoids compatibility haze.
30–50% carbon black covers most needs. Higher loading = deeper black but higher viscosity; we tune it to your target shade and your process window.
Typical letdown is 1–4%. Thin-wall or color-critical parts need tighter dispersion; we advise the ratio so your line runs without streaks.
Low-odor for interiors, UV-stable for outdoor pipe, food-contact options for packaging. Tell us the standard and we match a grade.
A starting point — every order is tuned to your resin and target, not pulled from a fixed shelf.
| Carrier resin | PE / PP / ABS / EVA (others on request) |
|---|---|
| Carbon black content | 30 – 50% (tuned to target jetness) |
| Let-down ratio | 1 – 4% typical; advised per process |
| Dispersion | Filtered for clean runs — no specks, no streaks |
| Melt flow (MFR) | Matched to injection / extrusion / blow molding |
| Options | Low-odor, UV-stable, food-contact grades available |
| Certifications | Plant: ISO 9001 / 14001 / 45001 |
We compound for specific end-uses. Pick the one close to yours for grade detail:
Low-odor black masterbatch for dashboards, trims and wire harness. Stable color, audit-ready paperwork.
UV-stable black for pressure pipe, conduit and outdoor profile. Consistent lots, outdoor durability.
High-dispersion grade for mulch, garbage and liner film. No gel, no specks at thin gauge.
EVA carrier for cable jacketing; food-contact options for rigid and flexible packaging.
Built for trial-and-scale, not just full containers.
| Minimum order | 1 ton per specification — trial and small batches supported |
|---|---|
| Sample | Free trial lot, 5–7 days to prepare, shipped with your let-down guidance |
| Production lead time | Typically 10–15 days after spec confirmation |
| Packaging | 25 kg PE bags, palletized; jumbo bags on request |
| Documents | CoA per lot, commercial invoice, packing list; inspection before shipment arranged on request |
We publish short, practical reads on price and compliance — useful when you plan sourcing:
What moves carbon black cost, and how we keep masterbatch pricing steady across lots.
A buyer checklist for EU-bound parts — what to ask your supplier before you commit.
Demand by region and application, and what it means for your sourcing plan.
The odor and dispersion points that decide pass or reject on the OEM line.
Tell us your base resin, target and quantity. We reply with a firm factory quote and a sample — no obligation.