Plastics & Polymers
Mineral fillers for plastics and polymer compounds, where particle size and surface compatibility affect processing and properties.
Overview
In plastics and polymer compounds, mineral fillers modify properties such as stiffness, density, dimensional stability and surface finish, and can reduce material cost.
How well a filler performs depends on its particle size, its shape and how it interacts with the polymer during compounding and processing.
Formulation challenges
- Dispersion in the polymer
- Fillers must distribute evenly during compounding to give consistent properties.
- Processing
- Filler loading and particle size influence melt flow and processing behavior.
- Surface compatibility
- The interaction between the filler surface and the polymer affects mechanical properties.
The role of mineral fillers
- Calcium carbonate
- A common filler for polymer compounds, used across many processing methods.
- Barium sulfate
- Adds density and can support surface finish in selected applications.
- Customized compounds
- Mineral blends can be adapted to a specific polymer and process.
Applicable products
BaSO₄
Micronized Barium Sulfate
A dense, chemically inert white filler with low oil absorption, used mainly in coatings.
Micronized gradesNatural Barite
Barite in its natural mineral form, used where density and chemical inertness matter more than fine particle size.
Natural mineralsCaCO₃
Micronized Calcium Carbonate
A widely used filler for paints, coatings and polymers. Particle size and distribution affect gloss, rheology and cost.
Micronized gradesKaolin
A platy aluminosilicate mineral used in some coating and polymer formulations for its effect on rheology, matting and film properties.
Natural mineralsSpecial 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
Powder Coatings
Filler selection and particle size for flow, surface appearance, gloss and cost.
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.
Discuss your Plastics & Polymers formulation
Tell us about your system and targets. We will propose a filler and help you adjust it.