Pigments Kneader Mixers

They excel at dispersion and refinement by breaking down pigment agglomerates, refining particle size, and achieving uniform dispersion in viscous pastes. They are ideal for high-viscosity handling of semi-dry, rubbery, or elastic-plastic materials, commonly used to produce pigment pastes, flush colors, color masterbatches, and high-purity pigments.

Beyond pigments, they are used for inks, dyes, adhesives, silicone rubber, chewing gum bases, pharmaceuticals, plastics compounding, and in industries such as pharmaceutical, nutraceutical, herbal, Ayurvedic, biotech, cosmetic, and chemical.

They are available in Stainless Steel 316, Stainless Steel 304, and Mild Steel. Stainless steel versions can be polished to matt or mirror finish as per customer requirements, while mild steel receives one coat of red oxide and two coats of epoxy paint.

Mixing and kneading occur through tangential action of ‘Z’-type (sigma) blades that rotate accurately at different speeds toward each other, transferring product from one end to the other. The action combines bulk movement, stretching, folding, dividing, and recombining, with shearing and tearing against the blades and side walls for size reduction of solids.

Tangential blades meet tangentially and typically rotate at different speeds (usually a 3:2 ratio, front blade faster); they are preferred for higher-viscosity materials such as adhesives, rubber compounds, flush colors, dyes, and pigments, providing stronger kneading and shearing. Overlapping blades rotate at the same speed, suit lighter viscosities (e.g., carbon pastes, creams), offer faster material interchange, and produce lower kneading and shearing.

Discharge options include hand-wheel operated (manual) or hydraulic operated (automatic) tilting of the container, through bottom valves, or via an extrusion screw beside the container—suitable for thick, sticky materials that do not flow easily.

Yes, a jacket for heating or cooling can be provided, complete with mineral wool insulation and cladding. Optional systems include a spray system and vacuum system (useful for preventing bubbles and oxidation in sensitive pigments).

Models range from ASM-50 (approx. 50 L working / 80 L gross capacity with 5 HP general or 7.5 HP heavy-duty motors) to ASM-3000 (approx. 3000 L working / 3800 L gross capacity with 100 HP general or 120 HP heavy-duty motors). Power voltage can be adjusted to local requirements.

They deliver superior shear force for even pigment distribution and high coloring power; vacuum models prevent bubbles and oxidation; they handle high pigment loading with consistent results and easy color changeover/cleaning; and they combine mixing, kneading, grinding, and sometimes extrusion in one machine. Additional design benefits include PTFE shaft sealing for food-grade compatibility and a minimum gap between the trough and blades to minimize product sticking.