Address
304 North Cardinal St.
Dorchester Center, MA 02124
Work Hours
Monday to Friday: 7AM - 7PM
Weekend: 10AM - 5PM
SJ25 Laboratory Extruder
A compact, high-precision laboratory extruder engineered for R&D, pilot runs, and small-scale production across polymers and advanced materials. The SJ25 combines stable melt control, flexible screw configurations, and smart data acquisition to accelerate formulation development and scale-up.
SJ25 Laboratory Extruder
Precision Process Control
- Closed-loop temperature control across barrel zones for steady melt temperature and uniform plasticization
- High-torque drive with fine speed resolution ensures stable output at ultra-low throughputs
- Modular screw and die system for rapid changeover and fine-tuned shear/mixing profiles
Versatile Material Compatibility
- Supports thermoplastics (PP, PE, ABS, PET, PA), elastomers, filled composites, bioplastics (PLA, PBAT), and recycled materials
- Optimized for masterbatch, color compounds, wood-plastic composites (WPC), flame-retardant and glass-fiber reinforced formulations
- Corrosion- and wear-resistant metallurgy available for abrasive and reactive systems
R&D-Centric Design
- Quick-clean barrel and split design options to shorten downtime between trials
- Integrated data logging for torque, melt pressure, temperature, and throughput—ideal for DoE and parameter mapping
- Optional gravimetric feeders, screen changer, and pelletizing systems for end-to-end lab lines
Energy-Efficient and Safe
- High-efficiency motor and barrel heating with smart insulation reduce specific energy consumption
- Multi-level safety interlocks, emergency stop, and over-torque protection for operator safety
- Low-noise, compact footprint suitable for laboratory and pilot environments
Popular keywords naturally included: SJ25 laboratory extruder, lab-scale extruder, single-screw extruder, polymer compounding, pilot line, R&D extrusion, melt stability, precision extrusion, masterbatch production, WPC extrusion.
Applications
Building & Construction
- WPC profiles, edging, seals, cable ducts, conduit prototypes
- Flame-retardant and UV-stabilized compounds verification
Furniture & Home
- Decorative profiles, edge banding trials, rigid/flexible PVC formulations
- Color/UV masterbatch evaluation for indoor/outdoor use
Automotive & Transportation
- Glass-fiber reinforced PA/PP compounds, impact-modified materials
- Low-VOC interior materials, lightweighting compound development
Packaging & Consumer Goods
- Barrier materials (EVOH blends), PET/PCR PET optimization
- Color and additive masterbatches, bio-based packaging trials
Electronics & Industrial
- ESD/antistatic compounds, halogen-free flame-retardant materials
- Engineering plastics for connectors, housings, and cable jacketing
Technical Specifications
Core Parameters
- Screw diameter: 25 mm (SJ25)
- L/D options: 25–33 L/D (customizable per process window)
- Output capacity: 2–25 kg/h depending on polymer, die, and screw design
- Speed range: 10–200 rpm with high-torque gearbox for stable low-rate extrusion
Temperature and Pressure
- Barrel zones: 3–5 independently controlled zones
- Temperature range: 30–350 °C with ±0.5 °C stability
- Melt pressure monitoring: standard 0–50 MPa transducer with overpressure protection
Configuration Options
- Screw geometry: general-purpose, mixing, barrier, and vented configurations
- Feeding: volumetric standard, gravimetric optional; side feeder for fillers/fibers
- Die & downstream: strand, sheet/tape, tube/profile dies; air/water cooling; strand pelletizer or hot-face pelletizer options
- Filtration: manual or hydraulic screen changer
Power & Utilities
- Drive power: 3–7.5 kW depending on torque package
- Heating power: 3–6 kW with high-efficiency insulation
- Air supply: 0.6 MPa for pneumatics (if equipped)
- Electrical: 380–480 V, 50/60 Hz, 3-phase (other voltages on request)
Note: Specifications can be tailored to application requirements; final performance depends on material system and process setup.
User Recognition
Customer Feedback Highlights
- “SJ25 gives us production-grade repeatability at lab scale—perfect for DoE and rapid formulation sprints.”
- “Changeovers are fast. The modular screw and die kits cut our development cycle time by 30%.”
- “Stable melt and precise feeding improved masterbatch quality and color consistency from day one.”
Market Performance & Case Studies
- Specialty compounding lab improved R&D throughput by 25% using SJ25 with dual gravimetric feeders for color and additive masterbatch trials.
- Automotive supplier validated glass-fiber PA66 compounds, translating lab parameters from SJ25 directly to 75 mm production with minimal re-optimization.
- WPC startup achieved consistent strand pellet quality at 12 kg/h, enabling reliable pilot-scale customer sampling.
Competitive Advantages
Innovation That Scales
- Lab-to-production parameter continuity ensures smoother scale-up and reduced commissioning time
- Advanced data acquisition supports traceable, data-driven optimization across materials
Total Cost of Ownership
- Efficient power usage and quick-clean design reduce operating and downtime costs
- Durable wear packages extend service life with abrasive fillers and fibers
Summary
A compact yet powerful R&D workhorse, the SJ25 Laboratory Extruder delivers precise melt control, broad material compatibility, and a modular architecture that accelerates formulation, qualification, and scale-up—raising your lab’s productivity while lowering risk and energy use.
