White Masterbatch vs Direct Titanium Dioxide Addition

1. What decision is the buyer trying to make?

Whether to dose TiO₂ into the process as a pre-dispersed white masterbatch or as direct TiO₂ powder into the extruder / compounder.

2. Which variables actually matter?

• Dispersion quality required (film gauge, fibre denier, thin-wall part)
• Line type (single-screw vs twin-screw vs compounding line)
• Dust and hygiene constraints (food, medical, closed feeding)
• TiO₂ loading level and consistency of dosing
• Downstream defects tolerated (specks, agglomerates, streaks)
• Total delivered cost per kg of TiO₂ actually dispersed, not per kg purchased

3. Which variables are commonly misunderstood?

• Powder TiO₂ looks cheaper per kg but often costs more per kg dispersed once scrap and downtime are included.
• "We have a twin-screw, so we can add powder" is only true when dispersion is validated on the actual grade and loading.
• Masterbatch carrier compatibility is not automatic — a PE-carrier white MB in a PP line has trade-offs.

4. What additional information is required before deciding?

• Process (film, injection, blow, fibre, sheet, compounding)
• Polymer and MFI
• Target TiO₂ loading (%)
• Existing feeding equipment (gravimetric, volumetric, powder handling)
• Quality specification (opacity, L*, defect count)
• Regulatory scope (food contact, toy, medical)

5. What should be included in the RFQ?

• Application and process
• Polymer + MFI
• Target TiO₂ loading and opacity target
• Carrier preference / restriction
• Regulatory requirements
• Volume and packaging
• Existing benchmark (grade in use today)

So what should the buyer investigate next?

Whether their current dispersion, dust exposure and scrap rate justify the format they use today — and request a like-for-like trial before switching.

Bridges

• W4 — White Masterbatch cluster
• W5 — Titanium Dioxide vertical (Rutile vs Anatase, grade selection)
• W10 — Application × Masterbatch (Film, Injection)