- Mixing and blending extruder
Function: Focus on uniform mixing and blending of materials to achieve dispersion and compatibility optimization of multi-component materials (such as polymer alloys, nanocomposites).
Features:
– Twin screw design (co-rotating or counter-rotating) to enhance shear and mixing effects.
– Precise temperature control to avoid material degradation.
Application:
– Development of polymer blends (such as PP/PE multi layer co-extrusion).
– Preparation of nanocomposites (such as graphene reinforced plastics).
- Composite and filling extruder
Function: Disperse fillers (such as glass fiber, carbon fiber, mineral powder) or functional additives (flame retardant, conductive agent) evenly into the matrix material.
Features:
– High torque design, suitable for high filling ratio (>50%).
– Segmented screw structure, optimizes filler dispersion and impregnation.
Application:
– Carbon fiber reinforced engineering plastics.
– Preparation of flame retardant or antistatic composite materials.
- Reactive extruder
Function: To achieve chemical reactions during the extrusion process, such as polymerization, grafting modification or cross-linking.
Features:
– Screw with a large aspect ratio (L/D) to extend the material residence time.
– Multi-zone precise temperature control to meet the requirements of reaction kinetics.
Application:
– Preparation of reactive compatibilizers (such as maleic anhydride grafted polyolefins).
– In-situ polymerization to generate biodegradable plastics (PLA).
Function: Cutting molten materials into pellets (pelletizing) or directly molding them into specific shapes (such as films, fibers, 3D printer filament extruder).
Features:
– Integrate downstream equipment (such as pelletizers, traction rollers).
– Modular mold design supports rapid replacement.
Applications:
– Laboratory scale granulation for subsequent injection molding or tableting tests.
– Customized wire production (such as biomedical material wires).
- Material testing and process optimization extruder
Function: Used to study the influence of material rheological properties, thermal stability or process parameters (temperature, speed, pressure) on performance.
Features:
– Equipped with real-time data acquisition system (temperature, torque, pressure sensor).
– Small batch processing capacity (<1kg/h) to reduce experimental costs.
Typical applications:
– Simulate industrial extrusion process and optimize production parameters.
– Evaluate the processing window of new materials (such as bio-based plastics).
Desktop pelletizing extrusion line
- Special Application Extruders
Function: Designed for specific industry needs, such as pharmaceutical, food or electronic materials.
Features:
– Meets industry certification standards (such as GMP, FDA).
– Anti-pollution design (all stainless steel, easy-to-clean structure).
Applications:
– Pharmaceutical: Hot melt extrusion (HME) to prepare solid dispersions and improve drug solubility.
– Food: Extrusion of plant protein meat or functionalized starch.
– Electronics: Development of conductive polymers or packaging materials.
The functional classification of laboratory extruders reflects their flexibility and specificity. Users can choose the corresponding model according to the experimental goals (mixing, compounding, reaction, molding, testing or special applications). Modern equipment often achieves “one machine with multiple functions” through modular design, further reducing R&D costs and accelerating the innovation process.
