Powder Coatings
Filler selection and particle size for flow, surface appearance, gloss and cost.
Overview
Mineral fillers make up a large share of many powder coating formulations. Their particle size, shape and chemistry affect how the powder flows, melts and levels, and how the cured film looks and performs.
BIGPOWDERMIN develops powder coating formulations. We test fillers in powder coating systems to help formulators choose and adjust the mineral for their resin system and finish.
Formulation challenges
- Surface appearance
- Smoothness and leveling of the cured film depend partly on filler particle size, especially the coarse end of the distribution (D90).
- Gloss control
- Fillers can be used to maintain high gloss or to reduce it for satin and matt finishes, depending on their type and fineness.
- Dispersion
- Fillers must disperse evenly during extrusion to avoid defects and keep properties consistent from batch to batch.
The role of mineral fillers
- Filler selection
- Barium sulfate, calcium carbonate and other minerals behave differently in a powder coating. The choice depends on the finish, the resin system and the performance target.
- Particle size
- A controlled distribution supports film smoothness and consistent application properties.
- Formulation optimization
- Filler type and loading are adjusted together with the rest of the formulation.
- Cost-performance balance
- Filler choice can lower formulation cost while keeping the required appearance and properties.
Applicable products
BaSO₄
Micronized Barium Sulfate
A dense, chemically inert white filler with low oil absorption, used mainly in coatings.
Micronized gradesCaCO₃
Micronized Calcium Carbonate
A widely used filler for paints, coatings and polymers. Particle size and distribution affect gloss, rheology and cost.
Micronized gradesSpecial Mineral Fillers
Minerals selected for a specific function in a coating or plastic formulation.
Specialty and customCustomized Mineral Compounds
Blends of minerals designed around a customer’s formulation requirements.
Specialty and custom
Technical support
Our technical team can help at each stage of your formulation work.
View technical servicesOther applications
Industrial Paints
Mineral fillers for the application and film requirements of industrial paints.
Decorative Paints
Fillers that support opacity, finish and application properties in architectural paints.
Protective Coatings
Mineral selection for barrier and durability considerations in protective systems.
Plastics & Polymers
Mineral fillers for plastics and polymer compounds, where particle size and surface compatibility affect processing and properties.
Discuss your Powder Coatings formulation
Tell us about your system and targets. We will propose a filler and help you adjust it.