Polyester Compounds Kneader

The machine is built from heavy-duty industrial alloys including Mild Steel, Stainless Steel 304, and Stainless Steel 316. Surface finishes can be customized to a matte or high-gloss reflective look. Corrosion protection includes a foundational red oxide primer coat plus a dual-layer epoxy topcoat. PTFE shaft seals support food-grade and sanitary standards, and the unit is insulated with high-performance mineral wool under durable exterior cladding.

It uses synchronized, counter-rotating ‘Z’-profile (sigma) agitators operating at differential speeds for a precise tangential kneading effect. This continuously shifts material axially while combining wholesale displacement, stretching, folding, splitting, and re-merging. Intense tearing and shear against the blades and vessel walls reduce particles and create homogeneous blends with minimal dead zones.

• Tangential arrangement: Counter-rotating blades meet tangentially (typically front blade faster at a 3:2 speed ratio). Best for heavy, high-viscosity media such as adhesives, elastomeric rubber compounds, pigments, and dense polyester formulations.
• Overlapping arrangement: Blades cross above the central crest at identical speeds. Ideal for free-flowing or lower-viscosity materials (creams, pastes, carbon pastes, clay slurries) that need gentler kneading and faster inter-compartment transfer.

Finished batches can be extracted via vessel tilting (manual hand-wheel or fully automated hydraulic), bottom-mounted outlet valves, or a lateral extrusion screw mounted alongside the mixing chamber. These options accommodate different viscosities and production preferences.

Yes. Adaptable temperature jackets support external heating or cooling. High-performance mineral wool insulation with cladding helps maintain precise thermal conditions, preventing premature curing or thermal degradation of sensitive polyester materials. Optional vacuum processing units and fluid spray systems are also available.

Models range from ASM-50 (approx. 50 L working / 80 L gross) to ASM-3000 (approx. 3000 L working / 3800 L gross). Motor power is offered in general and heavy-duty variants (e.g., 5–7.5 HP for the smallest up to 100–120 HP for the largest). Voltage can be customized to local requirements.

It achieves excellent distribution of reinforcements and additives without damaging fibers or degrading resins, prevents premature curing or thermal degradation, handles large batch sizes with shorter mixing cycles than traditional mixers, suits both thermoset and thermoplastic polyester compounds, and produces homogeneous materials with improved flow characteristics and mechanical properties.

• Co-Kneader (reciprocating single-screw): Continuous process with low shear and precise temperature control; ideal for high-filler loads and shear-sensitive polyesters.
• Sigma Kneader (Z-blade / double-arm): Batch-type with strong shearing, folding, and kneading; excellent for viscous pastes, putties, and stiff compounds.
• Dispersion Kneader (internal mixer): High-shear closed-chamber mixing for rubber-like or high-viscosity polyester elastomers.

It serves pharmaceutical, nutraceutical, herbal, Ayurvedic, biotech, cosmetic, and chemical industries. Typical applications include polyester-based resin molding compounds, color masterbatches, cable compounds, polycondensation reactions, polyester putties, sealants, adhesives, fiberglass resin doughs, and small- to large-batch compounding of high-viscosity materials.