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Talc for paper.
A practical buyer guide.
Understand the material requirements, choose a supply form and qualify talc for your process.
What talc does in paper
Start by identifying the role: functional filler, coating ingredient, or pitch and stickies control. These uses require different material characteristics.
General material requirements
There is no single specification for this entire industry. Use your formulation and production trials to turn these priorities into measurable acceptance limits.
| Requirement | What to specify or check |
|---|---|
| Filler & coating use | Evaluate fineness, brightness/colour, lamellarity and dispersion against sheet or coating requirements. Talc can contribute to smoothness and coating behaviour in suitable systems. |
| Pitch & stickies control | Assess surface characteristics and affinity for resinous contaminants. Brightness alone does not determine suitability for deposit control. |
| Process compatibility | Match the prepared mineral to the pulp, recycled furnish or coating formulation. The effective grade and dosage depend on the mill process. |
Buy raw feedstock or finished powder?
If you operate a mill, source lumps or smaller raw fractions against mineral composition, feed size, moisture and sorting requirements. Budget for yield, grinding, classification and qualification of the finished powder.
If you use talc directly in a formulation, ask for processed powder with an agreed particle-size distribution. Raw fines are not a substitute for micronized talc. Confirm the processing route and current availability.
How to qualify the material
For raw material, first assess mineral composition. Qualify the processed powder through laboratory or mill trials for the intended role, checking dispersion and sheet/coating quality or deposit-control performance as appropriate.
- Send us your current specification or target properties and test methods.
- Confirm the source, grade and proposed material form with our team, and ask us for the relevant technical data, safety data and applicable laboratory reports.
- Evaluate a representative sample with the same preparation used for comparison material.
- Run a production-relevant trial and record both benefits and trade-offs.
- Agree an approved reference, lot acceptance criteria and how source or processing changes will be communicated.
Compare supply offers fairly
Compare offers for the same material form and specification. Confirm packaging, net weight, quantity, destination, Incoterm and delivery schedule. For raw talc, include processing yield and freight in your cost comparison; for powder, include handling and performance in the finished product.
Ask how samples relate to the shipment and how lots are identified. If asbestos assessment is part of qualification, agree source-specific sampling and laboratory evidence before the order.
Your enquiry checklist
Intended role, pulp/furnish or coating system, powder specification, brightness priorities and the mill-trial criteria.
Add whether you need raw mill feed or finished powder, expected quantity, packaging and destination.
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