dry blending

materials technology

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Last updated

June 25, 2026

Quick Summary

Dry blending is a materials technology process used in the plastics industry. It involves mixing dry ingredients together before further processing. This can include combining pigments, stabilizers, or reinforcements with plastic resins, which are often supplied as pellets, flakes, or powders.1

In some cases, dry blending also refers to mixing a liquid plasticizer with a porous plastic powder, such as polyvinyl chloride (PVC). The liquid penetrates the pores of the resin, resulting in a free-flowing powder that appears dry, even when containing a significant amount of plasticizer. This process is crucial for preparing materials with specific properties for various fabrication methods like extrusion or molding.1

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Compounding
Dry blending refers to the mixing of dry ingredients prior to further use, as in mixtures of pigments, stabilizers, or reinforcements. However, polyvinyl chloride (PVC) as a porous powder can be combined with a liquid plasticizer in an agitated trough called a ribbon blender or…
Read More
Dry blending refers to the mixing of dry ingredients prior to further use, as in mixtures of pigments, stabilizers, or reinforcements. However, polyvinyl chloride (PVC) as a porous powder can be combined with a liquid plasticizer in an agitated trough called a ribbon blender or…
Read More