EXTRUTEX Vertical Mixer Series
High-Efficiency Stainless-Steel Mixing Solutions for Industrial Production

Introduction to the EXTRUTEX Vertical Mixer

In modern industrial production, the quality of the final product often depends on the uniformity and efficiency of the mixing stage. Whether blending dry powders, wet pastes, granules, or sensitive pharmaceutical ingredients, manufacturers need equipment that is reliable, easy to clean, and capable of delivering consistent results batch after batch. The EXTRUTEX Vertical Mixer series was developed precisely to meet these demands.

Rooted in Austrian design philosophy—emphasizing precision, durability, and operator-centric safety—the machines are manufactured in state-of-the-art facilities in Nanjing and Shanghai, China. This combination allows EXTRUTEX to offer European-level engineering at a competitive global price point without compromising on material quality or process performance.

The vertical mixer concept itself is simple yet highly effective: a cylindrical or slightly conical vessel is mounted upright, with the mixing tool (paddle, vane, roll, or screw) suspended from the top or bottom and driven directly by an electric motor. Gravity assists the movement of material, reducing the energy required for homogenization and enabling rapid discharge. Because the footprint is limited to the diameter of the vessel plus a modest service area, these mixers are ideal for factories where floor space is at a premium.

EXTRUTEX offers three principal design families—SST (roll type), SSB (vane type), and SSM (screw type)—covering capacities from 50 kg to 2000 kg. All models share the same core design principles: double-layer stainless-steel construction, direct motor drive, automatic timer stop, and comprehensive safety interlocks. The result is a family of machines that can be scaled to almost any production volume while retaining the same high standards of hygiene, efficiency, and safety.

Performance Characteristics

The following six performance pillars define every EXTRUTEX vertical mixer. Each point has been engineered to solve real-world production challenges.

These characteristics are not marketing claims; they are measurable engineering outcomes. The double-layer stainless-steel construction, for example, uses food-grade SUS304 or SUS316L (on request) for all product-contact surfaces. The outer layer provides mechanical strength and, when required, can be fitted with a heating or cooling jacket. The vertical geometry ensures that material continuously cascades through the mixing zone rather than remaining static in dead corners—an advantage that horizontal ribbon mixers sometimes struggle to achieve without additional scrapers.

Direct drive architecture removes the need for V-belts or chain transmissions. The motor is coupled through a precision reducer (or, on smaller models, directly) so that power losses are minimized and noise levels remain low. This design also simplifies maintenance: there are fewer wear parts to inspect and replace, and alignment issues common with belt systems disappear entirely.

Cleaning is a critical factor in multi-product facilities. The dismountable stirring chamber and removable beater or screw assembly allow operators to access every surface that contacts the product. Many models can be equipped with CIP (Clean-In-Place) spray nozzles for automated washing cycles, further reducing downtime between product changeovers.

The automatic stop function is particularly useful for processes that require a precise mixing duration. Operators simply set the desired time on the control panel; the machine runs until the timer expires and then stops automatically. Combined with the multi-safety interlock system—lid switches, emergency stop buttons, and overload protection—the risk of accidental injury or over-processing is substantially reduced.

Working Principle and Mixing Technology

Understanding how material moves inside the vessel explains why EXTRUTEX vertical mixers achieve such high homogeneity in relatively short cycle times.

When the motor starts, the mixing tool (paddle, vane, roll, or screw) begins to rotate. In paddle and vane configurations, the blades lift material from the bottom and throw it outward and upward. Gravity then pulls the material back down along the vessel wall, creating a continuous circulating flow. In screw-type models (SSM series), the central screw conveys material upward along the axis; at the top the material cascades outward and falls back, producing a gentle yet thorough mixing action ideal for fragile or heat-sensitive products.

Because the vessel is tall relative to its diameter, the path length of each particle is long, increasing the number of shear and folding events per unit time. This geometric advantage, combined with optimized blade angles developed through Austrian design experience, results in mixing times that are typically 30–50 % shorter than those of conventional horizontal mixers of the same working volume.

Discharge is equally efficient. A large bottom outlet (or side discharge on certain models) allows the finished batch to leave under gravity. On larger SSM units a discharge valve can be pneumatically or manually actuated, and residual material is minimal thanks to the polished internal surfaces and the action of the mixing tool near the outlet.

Typical Applications Across Industries

The versatility of the EXTRUTEX vertical mixer family makes it suitable for a wide range of materials and industries:

• Food industry – dry spice blends, bakery premixes, protein powders, infant formula, coffee mixes, sugar and starch compounds, seasoning granules.
• Pharmaceutical & nutraceutical – active pharmaceutical ingredients (APIs) with excipients, vitamin premixes, tablet granulations, herbal powders.
• Chemical industry – pigments, detergents, catalysts, polymer additives, fertilizer blends.
• Plastics & rubber – masterbatch components, PVC dry blends, rubber chemicals.
• Cosmetics – powder foundations, bath salts, dry shampoo bases.

In each of these sectors the ability to achieve a coefficient of variation (CV) below 5 % in a short cycle time translates directly into higher product quality and lower production cost. The stainless-steel construction and easy-clean design further satisfy the hygienic standards required by food and pharmaceutical regulators (GMP, FDA, EHEDG guidelines).

Main Components and Construction Details

Every EXTRUTEX vertical mixer is assembled from carefully selected parts that together guarantee long service life and process reliability. The principal components are listed below (numbering corresponds to the technical drawings supplied with each machine):

1. Cover – hinged or fully removable stainless-steel lid with safety interlock.
2. Handle – ergonomic grip for opening the cover.
3. Barrel / Vessel – double-layer stainless-steel body, polished internal surface.
4. Material Strobe / Outlet Gate – controllable discharge opening.
5. Localizer Screw – positioning and locking elements.
6. Material Outlet – large-diameter discharge port for rapid emptying.
7. Safety Switch – lid and access interlocks that stop the motor when opened.
8. Button / Control Panel – start, stop, emergency stop, and timer settings.
9. Beater / Mixing Tool – paddle, vane, roll, or screw depending on model.
10. Grease Nipple – lubrication points for bearings.
11. Reducer – high-efficiency gear reducer matching motor torque to process needs.
12. Motor – industrial electric motor, three-phase 380 V standard.
13. Truckle / Casters – heavy-duty wheels for mobility (smaller models).
14. Frame – robust steel support structure, powder-coated or stainless.
15. Control Box – electrical enclosure housing contactors, timer, and protection devices.
16. Handle (lifting) – additional grip points for maintenance access.

All product-contact parts are fabricated from stainless steel. Welds are continuous and ground smooth to eliminate crevices where product could accumulate. Bearing housings are designed with labyrinth seals or food-grade mechanical seals to prevent lubricant migration into the product zone. The entire assembly is mounted on a stable frame that can be fixed to the floor or left mobile on locking casters, depending on the model size and customer preference.

Technical Specifications

The table below summarizes the standard EXTRUTEX vertical mixer range. Custom capacities, materials of construction (e.g., SUS316L), explosion-proof motors, and jacketed vessels for heating or cooling are available on request.

Notes: Capacities are approximate and depend on bulk density of the material (typically calculated for 0.5–0.6 g/cm³). Power supply can be adapted to local standards (e.g., 220 V / 440 V / 50 Hz or 60 Hz). Dimensions and weights are approximate and may vary slightly with optional equipment.

Why Choose EXTRUTEX – Austria Design, China Manufacturing

EXTRUTEX occupies a unique position in the global mixing-equipment market. The design language, safety philosophy, and process know-how originate from Austrian engineering traditions that prioritize precision, longevity, and operator protection. Manufacturing takes place in modern facilities located in Nanjing and Shanghai—two of China’s most advanced industrial hubs—where skilled technicians, CNC machining centers, and rigorous quality-control systems ensure every machine meets the original design intent.

This dual heritage delivers several concrete advantages:

• Design integrity – Critical geometry, blade profiles, and safety interlocks are defined by Austrian engineers with decades of experience in process equipment.
• Manufacturing excellence – Chinese production partners operate under strict ISO 9001 systems and use certified stainless-steel grades, ensuring dimensional accuracy and surface finish.
• Cost efficiency – Customers receive European-level performance at a price point that reflects efficient Asian manufacturing logistics.
• After-sales support – Spare parts, technical documentation, and remote assistance are available worldwide; local service partners can be arranged for larger installations.

Every machine leaves the factory after a full functional test that includes motor load checks, timer accuracy verification, safety-switch validation, and a trial mix with a representative material. Certificates of conformity, material certificates for stainless steel, and electrical diagrams are supplied with the shipment.

Installation, Operation and Maintenance Guidelines

Installation of an EXTRUTEX vertical mixer is straightforward. Smaller models (up to approximately 200 kg capacity) arrive fully assembled and can be rolled into position on their casters. Larger units may be shipped in sections and require a forklift or crane for placement. A level, solid concrete floor is recommended; anchor bolts can be used to fix the frame permanently if vibration or seismic considerations apply.

Electrical connection is made to a three-phase supply matching the motor nameplate. The control box contains all necessary contactors, overload relays, and the electronic timer. Operators should verify correct phase rotation before the first start so that the mixing tool turns in the designed direction.

Daily operation follows a simple sequence:

1. Ensure the discharge valve is closed and the vessel is empty and clean.
2. Load the ingredients through the top opening (manual, vacuum, or screw feeding systems can be integrated).
3. Close the lid; the safety switch will only allow the motor to start when the lid is properly secured.
4. Set the desired mixing time (0–30 min) and press the start button.
5. When the cycle ends, open the discharge valve and empty the batch into a container, bin, or downstream conveyor.
6. If a product change is required, open the vessel, remove the mixing tool if necessary, and clean all contact surfaces.

Routine maintenance is limited to periodic lubrication of bearings via the grease nipples, inspection of the safety switches, and visual checks of the mixing tool for wear. Because the drive is direct, there are no belts to tension or replace. The stainless-steel surfaces resist corrosion and can be cleaned with standard food-grade detergents or CIP solutions.

Safety Features in Detail

Operator safety is engineered into every EXTRUTEX mixer from the ground up. The primary interlock is the lid safety switch: if the cover is opened while the motor is running, power is immediately cut. An emergency-stop mushroom button is located on the control panel and, on larger models, at additional accessible points around the machine. Overload protection on the motor contactor prevents damage from jammed tools or overfilled vessels. All electrical components are housed in an IP-rated enclosure, and grounding terminals are clearly marked.

For installations handling combustible dusts, optional ATEX or IECEx certified motors and electrical systems can be supplied. Guarding around rotating parts and clear warning labels complete the safety package, helping customers meet local occupational-health regulations.

Customization and Optional Equipment

While the standard range covers the majority of industrial needs, EXTRUTEX regularly engineers special versions:

• Jacketed vessels for heating or cooling (steam, hot water, or thermal oil).
• Vacuum-capable lids for de-aeration or solvent recovery.
• Load-cell weighing systems integrated under the vessel or frame.
• Automated feeding and discharge valves controlled by PLC.
• Special blade geometries for ultra-gentle mixing of fragile granules.
• Full stainless-steel frame and casters for corrosive environments.
• Explosion-proof or wash-down motors and control panels.

Customers are encouraged to share material characteristics (bulk density, particle size distribution, moisture content, sensitivity to shear or temperature) so that the optimal model and options can be recommended.

Quality Assurance and Regulatory Compliance

EXTRUTEX manufacturing facilities operate under ISO 9001 quality-management systems. Incoming stainless steel is certified to EN or ASTM standards; welding procedures follow recognized codes; and final inspection includes dimensional checks, surface-finish verification, and functional testing. Material certificates (3.1) and certificates of conformity are available for every machine.

For food and pharmaceutical customers, the design supports GMP principles: smooth internal surfaces, absence of dead legs, and full drainability. When required, surface roughness can be specified to Ra ≤ 0.8 µm or better, and electropolishing can be applied. Documentation packages suitable for FDA or EU regulatory filings can be prepared on request.

Total Cost of Ownership Advantages

Beyond the initial purchase price, the EXTRUTEX vertical mixer delivers ongoing savings:

• Energy efficiency – Direct drive and optimized geometry reduce kWh per batch.
• Short cycle times – Higher throughput means more batches per shift.
• Low maintenance – Few wear parts and easy access lower labor and spare-part costs.
• Long service life – Robust stainless-steel construction and quality components extend useful life well beyond ten years under normal conditions.
• Flexibility – Quick changeover and cleaning support multi-product facilities without dedicated lines for every formulation.

When these factors are calculated over a five- or ten-year horizon, the vertical mixer frequently proves more economical than larger, slower, or less hygienic alternatives.

Conclusion – A Reliable Partner for Precision Mixing

The EXTRUTEX Vertical Mixer series represents a thoughtful synthesis of Austrian design excellence and efficient Chinese manufacturing. From the compact 50 kg SST-50 to the high-capacity 2000 kg SSM-2000, every model shares the same commitment to fast, uniform mixing, easy cleaning, operator safety, and long-term reliability.

Whether you are producing food ingredients, pharmaceutical premixes, chemical powders, or specialty compounds, an EXTRUTEX vertical mixer can become a cornerstone of your production line—delivering consistent quality, protecting your operators, and occupying only a modest amount of valuable floor space.

We invite you to contact the EXTRUTEX team with your specific material data and capacity requirements. Our engineers will recommend the optimal model, options, and integration approach so that you can start benefiting from high-performance vertical mixing as quickly as possible.