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Product Description
In polymer formulation development, the gap between a laboratory beaker and a full-scale production-scale mixer is vast. Hand-stirred samples fail to replicate the thermal and shear history that defines real-world compound behavior. This is precisely where a pilot-scale mixing platform becomes indispensable.
The SHR-10A fills this critical void. With its 10-liter bowl and 7-liter effective working volume, it produces batch sizes large enough to feed downstream processing evaluations — whether you are extruding a test strip on a sheet extrusion line, pelletizing on a PVC hot-cutting pelletizing line, or calendering a prototype floor tile on an SPC four-roll floor production line — yet small enough that a single trial consumes fewer than 7 kg of raw material. For R&D teams working with expensive additives, rare pigments, or trial-grade resins, this economy is non-negotiable.
Three strategic advantages define pilot-scale compounding with the SHR-10A:
Risk Mitigation: A failed trial at 7 liters costs a fraction of a failed trial at 200 liters. The financial calculus is straightforward — validate formulations at pilot scale before committing to industrial mixer batches measured in hundreds of kilograms.
Iteration Velocity: The entire compounding cycle — dry blending, thermal ramp, cooling discharge — completes in under 20 minutes. A skilled technician can execute five to eight distinct formulation trials in a single shift, compressing what would take weeks into days.
Reproducibility Assurance: The PLC logs every parameter: jacket temperature profile, motor current draw, batch elapsed time. When a formulation graduates from lab to production, the operator on the pipe extrusion line floor receives a replicable recipe, not anecdotal notes.
Chenxing Machinery designed the SHR-10A specifically for teams that understand that formulation science begins at pilot scale — not at production scale, and certainly not on a hot plate.
| Parameter | Specification |
|---|---|
| Model | SHR-10A |
| Total Bowl Volume | 10 L |
| Effective Working Volume | 7 L |
| Main Motor Power | 3 kW |
| Spindle Speed | 2,000 rpm (fixed) |
| Heating Method | Self-friction (frictional heat generation) |
| Discharge Method | Manual discharge valve |
| Bowl Material | Stainless steel (SUS304) |
| Impeller Type | Precision die-cast aluminum alloy, dynamically & statically balanced |
| Cooling System | Spiral jacket cooling circuit (water-fed) |
| Speed Control | Imported inverter (VFD), brand-configurable |
| Control System | PLC programmable logic controller with digital display |
| Safety Features | Full safety guard with interlock + emergency stop button |
| Overall Dimensions (approx.) | 1,200 × 550 × 1,100 mm (L × W × H) |
| Net Weight (approx.) | 280 kg |
| Power Supply | 380V 50Hz 3-phase (customizable) |
| Warranty | 12 months on core mechanical and electrical components |
Rigid and flexible PVC dry blend preparation is the SHR-10A's core competency. The 2,000 rpm impeller tip speed generates sufficient frictional shear to raise batch temperature from ambient to 120–130°C within six to ten minutes — the optimal window for plasticizer absorption into the PVC primary particle without triggering premature gelation. Because the heating is entirely friction-driven, there are no hot-spot artifacts from jacket heating elements, giving your formulation data a true representation of what will occur in a full-scale high-speed mixer. The manual discharge port allows direct drop-out into a cooling mixer or onto a cooling tray, depending on your lab setup.
Wood-plastic composite formulations present a unique challenge: the wood flour component begins to degrade thermally above approximately 200°C, yet the polymer matrix — typically HDPE or PP — requires sufficient heat for uniform melt blending. The SHR-10A's friction-heating profile is inherently self-limiting; as the batch approaches the target temperature, the PLC triggers the cooling cycle, preventing the thermal overshoot that carbonizes wood flour. A typical WPC trial at 7 liters yields enough compounded material to press several test plaques or extrude through a lab-scale profile die, enabling mechanical property evaluation (flexural modulus, water absorption, density) with statistical confidence. For teams scaling WPC formulations toward a sheet extrusion line, the correlation between SHR-10A pilot batches and production output is well-documented.
Stone-plastic composite formulations — typically PVC resin, calcium carbonate filler (60–80 wt%), stabilizers, and processing aids — demand aggressive mixing to de-agglomerate filler particles and distribute them uniformly throughout the resin matrix. The SHR-10A's precision-balanced impeller generates the high-shear vortex required to fluidize high-filler-content dry blends without dead zones. A single 7-liter batch provides enough compounded material to calender multiple SPC floor tile prototypes on a benchtop press or, for integrated R&D labs, on an SPC four-roll floor production line. The manual discharge valve, positioned at the base of the bowl, accommodates the higher bulk density of mineral-filled SPC blends without bridging or hang-up.
Masterbatch development operates on a razor-thin margin of additive concentration — 2% versus 5% loading can shift cost-per-kilogram by a factor of two, while under-dispersion manifests as visible streaking in the final part. The SHR-10A's small-batch capability means a colorant producer can run a full factorial design of experiments (e.g., three pigment concentrations × two carrier resins × two dispersant levels = 12 trials) using less than 100 kg of total raw material. Each trial produces enough masterbatch to let down into a base resin and injection-mold color chips for spectrophotometric measurement. The PLC records time-temperature profiles for every run, creating an auditable data trail that supports ISO 9001 quality documentation. When the formulation is validated, it transfers seamlessly to a production-scale mixer with identical impeller geometry and heating methodology.
Thermoset powder coating formulations — polyester, epoxy, hybrid — require pre-mixing of resin, curing agent, pigments, and flow modifiers to a homogeneous dry blend before melt-extrusion. The SHR-10A handles this pre-mix step with the controlled shear and temperature rise needed to avoid premature curing at the particle boundaries. A 7-liter batch provides ample material for multiple extrusion runs through a lab-scale twin-screw extruder, supporting both formulation screening and application testing. For labs that also handle post-extrusion grinding, the SHR-10A integrates naturally into a workflow that continues through a disc grinding pulverizer and vibrating screen for finished powder classification.
The 10L / 7L effective volume is engineered for formulation validation, not mere demonstration. Every batch produces enough compounded material to feed downstream processing — extrusion, calendering, injection molding — yielding actionable mechanical and rheological data.
Unlike jacketed heating systems that create wall-proximity temperature gradients, the SHR-10A relies exclusively on impeller-to-material frictional energy transfer. This mirrors the heating mechanism of industrial high-speed mixers, making formulation scale-up thermodynamically predictable.
The impeller undergoes both static and dynamic balancing at the factory before assembly. The result is vibration-free operation across the full 0–2,000 rpm band, which translates directly to consistent vortex formation, uniform shear distribution, and batch-to-batch thermal repeatability — critical for masterbatch dispersion trials where 2% pigment loading differences must be statistically resolvable.
The variable-frequency drive ramps the motor from zero to 2,000 rpm over a programmable acceleration curve, eliminating the inrush current spike and mechanical shock of direct-on-line starting. This protects the motor windings and extends impeller bearing life, particularly under the frequent start-stop cycling typical of multi-trial R&D days.
The digital controller stores multiple compounding recipes, each defined by a temperature-versus-time profile with cooling-cycle trigger points. An operator selects a recipe, charges the bowl, and presses start; the PLC manages the entire heating profile, alerts at the target temperature, and logs the run data for traceability — reducing operator-to-operator variability in formulation trials.
Once the batch reaches its target temperature and the manual discharge is complete, the spiral cooling circuit rapidly brings the bowl back to ambient readiness for the next trial. In a high-throughput R&D environment running back-to-back small-batch trials, this cooling speed directly governs daily throughput.
The SUS304 bowl and contact surfaces withstand the mildly acidic decomposition byproducts that some PVC stabilizer systems generate at elevated temperatures. Between formulation changes, the smooth interior surface cleans with a simple wipe-down, minimizing cross-contamination risk when switching from, say, a carbon-black masterbatch to a titanium-dioxide white compound.
The full-coverage safety guard is electrically interlocked: opening the guard during operation triggers an immediate motor cut-off via the emergency stop circuit. This is not an optional extra — it is standard equipment on every SHR-10A, reflecting Chenxing Machinery's engineering-first approach to lab safety.
At approximately 1.2 meters in length and 0.55 meters in width, the SHR-10A occupies minimal floor space. In crowded polymer R&D labs where every square meter is contested by extruders, presses, and analytical instruments, this compact footprint is a practical advantage that simplifies lab layout and workflow design.
A formulation validated on the SHR-10A is not merely a successful bench-top experiment — it is a production-ready recipe with a verifiable processing pedigree. This is the result of deliberate engineering continuity across Chenxing's mixer portfolio.
Identical Heating Principle: Both the SHR-10A and its larger siblings in the SHR series — spanning capacities from 50L through 800L — employ self-friction heating generated by impeller-material interaction. The same thermodynamic mechanism that raises a 7-liter PVC dry blend to 125°C on the pilot-scale unit will raise a 500-liter batch on an industrial mixer to the same temperature, with a proportional time offset. There is no translation required from "jacket setpoint" to "friction energy," because both scales use the identical heating modality.
Geometric Impeller Scaling: The SHR-10A's impeller profile — blade angle, tip clearance, hub-to-tip ratio — is designed as a geometrically scaled derivative of production-class impellers. This means the shear rate distribution, vortex shape, and material circulation pattern observed at pilot scale are representative of production-scale behavior, not an idealized laboratory approximation.
PLC Recipe Portability: A formulation developed on the SHR-10A generates a digital recipe file containing the complete time-temperature profile, cooling trigger points, and motor current signature. When production engineers commission the same formulation on a larger mixer, this data file serves as the baseline — they adjust for thermal mass, not for fundamental mixing behavior differences. This reduces production-scale trial runs from "several" to "typically one."
Downstream Integration Validation: The SHR-10A's batch size (7 L effective) feeds directly into the input hopper of a lab-scale plastic pelletizer, a benchtop SMP pulverizer, or a small-format sheet extrusion line. You evaluate not just the dry blend quality, but the entire downstream processing chain — pellet quality, sheet surface finish, floor tile dimensional stability — using material compounded under pilot-scale conditions that are inherently scalable.
For labs that also operate twin-screw compounding lines for PET or engineering resins, the SHR-10A's pre-mix function feeds naturally into twin screw PET sheet extrusion and APET PETG CPET sheet extrusion workflows, where consistent dry-blend homogeneity upstream directly influences downstream melt quality and sheet clarity.
University polymer science departments, corporate R&D centers, and independent testing labs all share a common constraint: the cost of raw materials for systematic formulation screening. The SHR-10A addresses this directly. A full factorial design of experiments evaluating three PVC stabilizer types at three loading levels (9 trials) consumes approximately 63 liters of compounded material — a volume that a single 100-liter mixer trial would exceed. The pilot-scale batch size also aligns naturally with the throughput of common lab analytical instruments: a 7-liter batch yields sufficient material for DSC analysis, TGA runs, mechanical tensile bars, and impact specimens, all from a single compounding event. For labs characterizing new additive packages or benchmarking competitive formulations, the SHR-10A compresses the data generation timeline from weeks to hours without compromising statistical rigor.
Color masterbatch formulation is an exercise in precision at low concentration. A 0.5% shift in pigment loading can produce a visible ΔE (color difference) that a downstream customer's quality control department will reject. The SHR-10A's PLC-controlled thermal profile and vibration-free impeller operation ensure that two trials at the same recipe settings produce dry blends with statistically indistinguishable dispersion quality — the prerequisite for isolating pigment concentration as the sole independent variable. For masterbatch producers that also manufacture their own carrier resin compounds, the pilot-scale mixer bridges to downstream plastic grinding machine and plastic crusher equipment for size reduction and recycling of off-spec trial material.
Teams working on wood-plastic composites, stone-plastic composites, natural-fiber-reinforced thermoplastics, or filled polyolefin compounds face a shared formulation challenge: filler-matrix compatibility is a function of mixing intensity, not just additive chemistry. The SHR-10A provides a controlled-shear platform to decouple these variables. Run a WPC trial at constant residence time but varying impeller speed (via VFD), and you isolate the effect of shear on wood flour dispersion and thermal degradation. The resulting data informs not just the formulation but also the processing window specification for larger industrial mixer units, pipe extrusion lines, and downstream caterpillar haul-off machines in continuous production environments.
Choosing a pilot-scale mixer supplier is not a transaction — it is the beginning of a technical partnership that may span years of formulation development, scale-up, and eventual production commissioning. Chenxing Machinery brings to this partnership a quarter-century of specialization in polymer processing equipment, with manufacturing facilities in Zhangjiagang, China, and an installed base spanning more than 40 countries.
Domain-Specific Engineering, Not General Fabrication: Chenxing is not a general-purpose metal fabricator that also makes mixers. Our engineering team lives and breathes polymer compounding. Every SHR-10A component — from the die-cast alloy impeller to the spiral cooling jacket geometry — reflects accumulated knowledge from thousands of mixer installations across PVC, WPC, SPC, masterbatch, and powder coating applications worldwide.
Seamless Vertical Integration: The SHR-10A is not an isolated product; it is the entry point into an integrated equipment ecosystem. When your formulation graduates from pilot to production, Chenxing supplies the full downstream line: high-speed mixer, plastic pelletizer, sheet extrusion line, pipe extrusion line, reinforced pipe production line, dust-free pipe cutter, pipe coiler, pipe belling machine, caterpillar haul-off machine, and auxiliary equipment including screw feeders, SML air-cooled chillers, SML water-cooled chillers, and vibrating screens. Single-supplier responsibility simplifies commissioning, troubleshooting, and spare-parts management.
Global Support, Local Responsiveness: With a dedicated export department and English-speaking technical support engineers, Chenxing provides pre-sales consultation, installation guidance (remote or on-site), and ongoing after-sales service. Spare parts — impellers, bearings, seals, VFD modules — ship from stock within 72 hours of order confirmation.
Customization Without Compromise: Voltage/frequency requirements (220V/60Hz, 440V/60Hz, 415V/50Hz), bowl material upgrades, impeller surface treatments (hard anodizing, PTFE coating), and automation level (basic PLC to full SCADA integration) are configurable per order — not as "special request" surcharges, but as standard engineering options.
The SHR-10A is designed for a 7-liter effective working volume, which represents approximately 70% of the total 10-liter bowl capacity. This fill ratio is chosen to maintain proper vortex formation and uniform material circulation — the impeller must be sufficiently covered for efficient friction heating. While you can run batches as small as 4–5 liters, performance begins to deviate from the calibrated 7-liter baseline because the impeller is partially exposed, altering the shear profile. For formulation trials where batch-to-batch thermal consistency is critical, we recommend maintaining the 7-liter charge. If your material constraints demand smaller batch sizes, please contact our engineering team; we offer a smaller SHR-5A variant (5L / 3L effective) for ultra-small-scale trials.
Friction heating converts the impeller's mechanical energy directly into thermal energy within the material bulk, whereas jacket heating transfers heat from an external source through the bowl wall. The key advantage for pilot-scale PVC compounding is that friction heating mimics the exact mechanism used by production-scale high-speed mixers. This means the temperature ramp rate, peak temperature distribution, and plasticizer absorption kinetics observed at pilot scale are directly translatable to production scale. Jacket-heated lab mixers, by contrast, introduce a thermal boundary condition — wall-proximity superheating — that does not exist in friction-heated production units, often requiring empirical correction factors during scale-up that add uncertainty and trial-and-error iterations.
Yes. The SHR-10A's 3 kW motor and 2,000 rpm impeller provide the high-shear vortex required to fluidize dense, high-filler-content dry blends. The stainless steel bowl and balanced impeller resist the abrasive wear that high-mineral-content formulations impose, though we recommend periodic inspection of impeller blade surfaces — typically every 500–800 operating hours under continuous SPC compounding duty. If your lab specializes exclusively in SPC or other highly abrasive formulations, an optional hard-anodized impeller surface treatment is available at order configuration, extending service life by approximately 40%. The manual discharge valve at the bowl base is sized to accommodate the higher bulk density of mineral-filled blends without bridging.
A complete WPC trial cycle breaks down as follows: raw material charging (2–3 minutes, depending on the number of components and whether pre-weighed bags are used), friction heating to target temperature — typically 115–135°C for WPC formulations incorporating HDPE or PP matrices (6–10 minutes), manual discharge into a cooling tray or cooling mixer (1–2 minutes), and bowl cool-down via the spiral jacket water circuit plus wipe-down (5–8 minutes). Total cycle time ranges from 15 to 22 minutes depending on target temperature and cooling water temperature. In a typical eight-hour lab shift, this translates to 15–20 complete trials, making the SHR-10A suitable for high-throughput formulation screening.
This is one of the SHR-10A's principal use cases. The dry blend exiting the SHR-10A is ideally conditioned for metered feeding into a lab-scale twin-screw extruder — the components are homogeneously distributed at the particle level rather than macro-segregated, which stabilizes the extruder's feed-zone behavior and improves the consistency of dispersive mixing in the melt phase. For masterbatch development, a single 7-liter SHR-10A batch typically provides enough pre-mixed material for three to five extruder runs (depending on extruder throughput), allowing technicians to vary extruder parameters (screw speed, barrel temperature profile, vacuum vent level) while holding the pre-mix quality constant — a controlled-variable experimental design that cleanly separates mixing effects from extrusion effects.
The SHR-10A's PLC logs for each batch: (a) start time and date stamp, (b) target temperature setpoint, (c) actual temperature-versus-time profile sampled at 0.5-second intervals, (d) motor current draw throughout the cycle, (e) cooling-cycle activation time and duration, and (f) any alarm events (e.g., safety guard interlock trigger, emergency stop activation). This data set is exportable via USB or, with the optional Ethernet/IP module, directly to a lab LIMS. For ISO 9001-compliant formulation development, this provides the complete processing pedigree — who ran the batch, when, under what thermal conditions — that auditors require for traceability. The data also supports statistical process control analysis: tracking motor current draw trends over hundreds of batches can provide early warning of impeller wear or bearing degradation.
The impeller is the SHR-10A's most critical engineering component — it is the interface between motor power and material transformation. Chenxing's impellers are precision die-cast in aluminum alloy, then machined to final profile tolerances of ±0.1 mm on blade angle and tip clearance. Each impeller undergoes static balancing (on a balancing arbor) and dynamic balancing (on a dynamic balancer at 800 rpm) to G2.5 grade per ISO 1940-1, which eliminates the low-frequency vibration modes that create inconsistent vortex formation. When you replicate a formulation on a larger industrial mixer with the same impeller profile geometry, the material experiences the same shear rate distribution and circulation pattern, scaled by bowl diameter. This geometric fidelity is the foundation of pilot-to-production formulation reproducibility.
Every polymer formulation that reaches the market began as a small batch in a lab. The SHR-10A exists to ensure that your small batch tells you the truth — about your formulation, about your process, and about what will happen when you scale.
Your Four-Step Inquiry Path:
Define Your Requirements: Material family (PVC WPC SPC masterbatch powder coating), typical batch size, voltage/frequency specification, and any special configuration needs (impeller coating, automation level, Ethernet connectivity).
Contact Our Engineering Team: Reach Nicole directly at +86 15951127288 or ceo@cxsljx.com with your specifications. Our engineers will respond within one business day with a tailored quotation, lead time estimate, and shipping options to your location.
Review the Proposal: Your quotation includes the SHR-10A unit, imported inverter brand specification, PLC configuration, comprehensive user manual, and warranty terms — no hidden line items, no post-quote surprises.
Schedule Delivery & Commissioning: Standard lead time is 15–25 working days from order confirmation. Remote commissioning support via video call is included; on-site commissioning by a Chenxing service engineer is available as an optional service for labs requiring hands-on setup assistance.
