TL-Ultra

Built for flexible laboratory work

• A corrosion-resistant coated metal enclosure has insulated inner walls and accessible surfaces for cleaning. Windows on two sides make the process visible.
• External components reduce electric-field interference. Inlet and exhaust openings support uniform airflow, with chamber lighting and temperature/humidity displays. A 10-inch touchscreen and quick-access buttons bring the main controls together.

Bipolar high-voltage supplies

• One negative high-voltage supply and multiple positive supplies support bipolar configurations. Automatic voltage compensation and real-time monitoring help maintain stable output.
• Touchscreen and quick-access controls work with industrial-grade insulation. Protection covers overvoltage, overcurrent, arcing and short circuits.

Integrated touchscreen control

• Control high voltage, syringe pumps, spinneret motion and the rotating collector from one interface. Adjust parameters during operation, record data and coordinate motion.
• The screen can be stowed at the side of the enclosure.

Four-channel servo syringe pump

• Four independent channels let you set each plunger speed separately for multicomponent experiments. Servo drives provide high thrust for viscous liquids, with electrical isolation for high-voltage operation.
• Install the pump inside or outside the enclosure to suit the process. An upgrade to 6–8 channels is available.

Dehumidification

• A compact compressor delivers a gentle flow of dry air. The standard dehumidifier reaches approximately 30% RH at room temperature.
• An enhanced dehumidifier reaching approximately 20% RH is available at extra cost.

Optional configuration

Optional mist-free humidifier

• Evaporative humidification maintains uniform chamber humidity while reducing droplet deposition on the collector. Quiet, energy-efficient operation with germicidal protection.

External chamber heating

• An external visible-light heat source provides uniform heating over a large area, with adjustable output. Keeping the heater outside avoids internal dust-trapping structures and electric-field interference.
• An optional collector heating plate can provide additional heat.

Optional configuration

Independent collector heating

• Heat the mandrel and drum independently for low-volatility solvents, specialty materials and thermally assisted electrospinning.

Single-needle spinneret

• Includes 100 stainless-steel needles in various sizes. The dedicated holder accepts standard metal needles and allows adjustment of the spinning angle and spinneret-to-collector distance.

Glass microcapillary needles

• Hollow glass needles are available in diameters from 1 to 45 µm, with a minimum inner diameter of 1 µm. Small bores support low-viscosity fluids and low-volume delivery for ultrafine fibers and near-field direct writing.

Tubeless, low-volume spinnerets

• The syringe connects directly to the needle, reducing tubing consumables and using as little as 0.5 mL of solution per experiment.
• Two tubeless spinnerets are included in the standard configuration. Additional units are optional, with configurations for 2–4 simultaneous spinnerets.

Coaxial spinneret

• Five needle sets offer interchangeable inner and outer needles for core–shell fibers. Concentric construction and an extended tip reduce the required spinning voltage.
• Independent inner and outer fluid feeds use two pump channels. The spinneret also supports gas-assisted spinning.

Optional configuration

Coaxial multi-needle arrays

• Coaxial needles are available in circular and array layouts as optional configurations.

Triaxial spinneret

• Five needle sets with interchangeable inner, middle and outer needles produce three concentric layers. Extended needle geometry reduces the required spinning voltage.
• Three independent pump channels feed the fluids separately. The spinneret is also compatible with gas-assisted spinning.

V-shaped four-needle system

• The four-needle platform can be configured with 4–8 V-arranged needles. Needles within each group share the same voltage; the two groups connect to opposite polarities.
• Run electrospinning and electrospraying simultaneously, or combine different materials. Angle and distance adjustments have scales for recording positions.

Conjugate electrospinning

• Two parallel needles connect to positive and negative high-voltage supplies. Opposite-polarity jets reduce residual charge at the collector for denser fiber mats.
• Spin two different materials for composite mats, nanofiber yarns and specialty structures.

Multi-channel sea-island spinneret

• Two- or three-channel configurations provide independent material feeds for composite fibers with three or more components. Create sea-island, cable-like and other specialty cross-sections.

Side-by-side spinneret

• Two independent channels deliver different materials for bicomponent fiber membranes. Five needle sets provide different sizes.
• Differences in the elastic modulus of the materials can produce self-crimping, spring-like and other fiber shapes.

Optional configuration

Optional multi-needle arrays

• A single inlet distributes fluid to multiple needles for higher throughput. Choose a linear, ring or array layout.

Automatic needle cleaning

• Clean needles during operation without stopping the process, particularly when using volatile solvents. Set the cleaning frequency according to solvent evaporation. Available for the spinneret types described above.

Spinneret motion and positioning

• Motorized X motion traverses the spinneret along the drum axis, controlled through the touchscreen with data recording. Manual Y and Z adjustments have graduated scales.

Rotating drum collector

• Collect flat membranes with random or aligned fibers. Higher rotation speeds support aligned deposition; the microscopy images show fiber morphologies.

Rotating disc collector

• Collect narrow ribbons of highly aligned nanofibers on the disc edge. Sharp-edge and flat-edge configurations are available.

Highly aligned fiber collector

• High-speed rotation aligns fibers into narrow, flat membranes and fiber bundles.

Rotating mandrel collector

• Produce hollow tubular membranes in different diameters for vascular graft and tubular scaffold research.

Parallel-electrode cage collector

• Parallel electrodes collect aligned nanofibers at low rotation speeds, with easy transfer to other substrates. Thick mats remain flat and uniform after unwrapping.

Roll-to-roll collection

• Collect nanofiber membranes continuously. Adjust take-up speed to the required membrane thickness, or select the fixed-length version.

Adjustable flat plate collector

• An adjustable-angle stainless-steel plate supports rigid substrates that cannot be rolled. An X–Y motion stage can be added as an option.

Optional configuration

Heated spinneret

• A 5 mL glass syringe supports small solution volumes for heated electrospinning and melt electrowriting, with positive high-voltage compatibility.

Optional configuration

Spiral yarn collection

• Produce continuous nanofiber yarns with or without a core. Core yarns receive a nanofiber coating; coreless yarns gather fibers into a continuous strand without a supporting core.

Optional configuration

Thick three-dimensional mats

• Continuously build a porous three-dimensional fiber network. Collection time and process settings determine thickness. Applications include filtration, adsorption, electrodes and tissue-scaffold research.

Optional configuration

Nanoparticle and microsphere module

• Collect dispersed nanospheres, short fibers and related structures in a liquid bath. The module includes a magnetic stirrer, insulating base, microsphere nozzle and holder, and auxiliary electrode.
• Two bath vessels are supplied, one of each diameter.

Optional configuration

Microwire coating collector

• Deposit nanofiber coatings on fine wires. Two motors control translation and rotation, with an independent controller and stepless speed adjustment.

Optional configuration

Gas-assisted spinning

• Aerodynamic and electrostatic forces work together to draw the jet. Throughput can reach approximately 20 times that of conventional electrospinning, depending on the material and process.
• Supports straighter fibers with cleaner surfaces, membranes, lofted mats, cotton-like 3D structures and short fibers.

Optional configuration

Cross-aligned fiber module

• Build multilayer membranes with parallel or orthogonal fiber alignment. A dedicated spinneret, rotating dual-disc collector and independent digital controller support setup and process control.

Optional configuration

In-situ UV curing

• Automatic curing with uniform irradiation, without removing the sample for a separate post-treatment step. This reduces sample transfers and handling.

Optional configuration

Centrifugal electrospinning

• Centrifugal and electrostatic forces stretch and eject the polymer solution to form fibers with nanoscale or submicron diameters.

Optional configuration

Rotating flat plate collector

• Servo-controlled rotation collects random or aligned membranes, including highly aligned fibers. The plate angle can be customized for the application.

Optional configuration

X–Y motion stage

• Control two-dimensional paths on a flat plate collector with CAD import or programmed input. Includes a handheld controller and control box, timing-belt transmission and stepper motors, with insulating plastic construction.

Optional configuration

Ionizing air blower

• Neutralize static charge to reduce fiber adhesion and buildup. Controlled airflow supports more uniform deposition with fewer defects.
• Also assists solvent evaporation, humidity regulation and process stability.

Operator and equipment safeguards

• An accessible emergency stop enables rapid shutdown. Automatic power protection cuts off overvoltage and overcurrent.
• The door interlock shuts off high voltage when the door opens. Multi-point grounding connects the enclosure, high-voltage supplies, pumps and collectors.

System dimensions

• The drawing shows the enclosure and the full installation envelope. Overall height includes the upper equipment assembly.