Injection molding · high-gloss black masterbatch

Black Masterbatch for Injection Molding — PP, ABS, PS & PE Grades

Made at our plant in Huizhou since 2016. Injection molding is unforgiving about surface: flow lines, dull patches and black specks all show up on a visible part. This grade is balanced for finish as much as for color.

High gloss optionsNo flow linesISO 9001 / 14001 / 45001PP / ABS / PS / PEConsistent lots

Since 2016making black masterbatch

60,000 t/yrplant capacity

30+ countriesexport markets

1,000+ buyersserved worldwide

What we tune for injection molding

A molded part is judged at arm's length. That means the masterbatch has to disperse fully in a short cycle and not leave the visual defects that get a part rejected at final inspection.

Carrier resin	PP, ABS, PS, PE — matched to your base polymer
Carbon black content	Standard to high-loading, set by the depth of black you need
Standard grades	PP103 · PP30F · AM3910 — see the full TDS chart
Surface finish	High-gloss and matte options for visible parts
Dispersion	Full dispersion in short cycles — no specks or streaks
Melt flow (MFR)	Matched so the grade does not slow your cycle
Certifications	ISO 9001 / 14001 / 45001

Tell us your base polymer, part weight and whether the surface is visible — we will match a grade and send sample.

Why moulders buy from our plant

Surface

Gloss or matte, as specified

Visible parts get a grade tuned for finish, not a general-purpose black that happens to be in stock.

Cycle time

Flows with your resin

MFR is matched to your base polymer so the masterbatch does not become the reason your cycle slows.

Commercials

Direct from plant

No trading-company layer. A firm factory quote and a faster technical answer.

De-risk

Trial lot first

Mould trial parts on your own machine before you commit. We keep your spec confidential.

Where it goes

Typical molded applications our black masterbatch is compounded for:

Appliance housings

PP and ABS housings with a visible surface.

Electronics parts

PS and ABS enclosures, brackets and covers.

Housewares

Buckets, crates, kitchen items and storage boxes.

Industrial components

Pallets, crates, fittings and functional black parts.

High-gloss options Free sample on request Your spec kept confidential 60,000 t/yr capacity

Running it in a mould

Injection moulding is the application where a black masterbatch is judged most openly — the surface is the product. Four variables decide the outcome:

Match the carrier to the base resin. PP, ABS, PC, PA and PBT all need their own carrier. A polyolefin carrier in a styrenic or engineering resin becomes a separate phase and shows up as flow lines, weld-line weakness or a dull patch.
Check the MFI shift, not just the MFI. A masterbatch changes the melt flow of the compound. If your process window is tight — thin walls, long flow paths, delicate cores — the masterbatch's effect on MFI is a process decision, not a pigment decision.
Streaks and weld lines are dispersion and gating problems, not loading problems. Increasing carbon does not fix a streak; it usually makes the reading worse while hiding the cause. The diagnostic order is gating, then dispersion, then loading.
Colour consistency lot to lot matters more than the absolute shade. Moulded parts are compared side by side. Per-lot colour data is worth more than a single approved sample.

Base resin	Carrier to specify	Watch
PP homopolymer / copolymer	PP	Shrinkage and dimensional stability
ABS / SAN	ABS or SAN	Surface gloss; compatibility with the styrenic phase
PC and PC blends	PC or a PC-compatible carrier	Impact retention after loading
PA / PBT (glass-filled)	PA or PBT	Glass-fibre interaction; dispersion at the gate
TPU / TPE	TPU-compatible	Flexibility and colour depth at low loading

The carrier compatibility guide explains why the carrier divide is about polarity rather than preference.

Questions buyers ask

Will it give a high-gloss finish on ABS?

Yes, we supply high-gloss grades for ABS and PS. Tell us whether the surface is visible and what finish you are matching, and we will propose a grade.

Can I use the same grade across PP and ABS?

Usually not. Carrier compatibility drives dispersion and surface quality, so we match the carrier to your base polymer. Tell us what you run and we will supply per-polymer grades.

What order size can we start with?

Trial lots start at 1 ton per specification — enough to mould trial parts and check the surface. We quote trial and production volumes separately.

How fast can we get a sample?

Typically 5–10 days to most markets, with let-down guidance for your machine.

Get a factory quote

Tell us what you are running and how much you need. We reply with a firm factory quote — and, if you want to test before committing, a free 1–5 kg sample compounded on your own carrier resin. No obligation.

See the plant behind the injection grade

MFR-matched carrier systems, twin-screw compounding, and incoming inspection on every raw-material lot.

Full factory tour —2:50 on YouTube

Two minutes and fifty seconds inside the Huizhou plant: raw-material dosing, compounding, pelletising, packing and the QC laboratory.

Watch the full tour on YouTube →

Factory-direct. Annual capacity 60,000 t/yr. Certification details on the certifications page.