LINEA line. Nanofibers production for various types of applications.

Nanospider™ technology uses a thin stainless steel wire as the spinning electrode and a moving head to apply the polymer solution along the entire length of this wire. When a strong electrical field is applied, nanofibers are formed from the thin polymer layer on the spinning electrode. Only a small amount of polymer solution is applied to the wire during each cycle of the moving head which is a prerequisite for maintaining consistent nanofiber morphology during long‑term production.

This technology forms nanofibers along the entire length of the spinning wire which is the key to industrial scale production.

LINEA line application

The magic is in the technology

The technology uses a stationary spinning electrode wire where the polymer solution is applied to the wire using a special moving head with a calibrated orifice. This applies a thin layer of polymer solution to the surface of the wire. When high voltage is applied, the surface tension of the polymer solution is overcome by the electrostatic force and the solution is forced to move to an area with a lower electrical potential which starts the formation of the Taylor cones. As the liquid stream moves towards the collecting electrode, the solvent evaporates, the nanofibers are stretched, and subsequently deposited on the substrate material which sits below the collecting electrode.

More electrodes for higher productivity

The equipment is modular and production capacity can be increased by adding up to four units in series. Production throughput increases linearly with each additional unit.

Technological benefits

High throughput
and uniformity

NS 8S1600U example: 20,000,000 m² coated material per year for PA6, fiber diameter 150 nm, basis weight 0.03 g/m³, 85% serviceability

Cost‑effective
production

The device allows for optimization of the process for specific polymer, substrate and product parameters.

Production scalability

Each unit contains 8 spinning electrodes. To increase productivity, up to 4 electrospinning units with a total number of 32 spinning electrodes can be included in one production line.

LINEA technology use in practice

LINEA line products

Nanospider™ NS 8S1600U

Scalable industrial production line

Nanospider™ NS 4S1000U

Easy transition from laboratory scale to industrial production

Nanospider™ NS 3S500U

Universal equipment for research and small‑volume production

Scalable industrial production line

Nanospider™ NS 8S1600U

Nanospider™ NS 8S1600U is our most versatile module for high‑volume nanofiber production. It is designed for ease of use, scalability, and flexibility in the production of the highest quality nanofibers. The 1.6 meter wide electrospinning units are modular, allowing up to four NS 8S1600U units to be combined into one production line, which results in the capacity to produce tens of millions of square meters of nanofiber materials annually.

Technical specifications of the NS 8S1600U production line

Number of electrospinning units 1
Number of application modules 2
Modules can also be operated independently with different polymers
Total number of spinning electrodess 8 (4 per module)
Spinning electrode width (adjustable width 1000‑1600 mm) 1600 mm
Electrospinning voltage 0–140 kV
Unwinding speed (depending on the desired nanofiber layer) 0,2–40,0 m/min.
Distance of the spinning electrode to the substrate 150–250 mm
The distance of the wires of the collecting electrode above the substrate 30–130 mm
Electrical Consumption 5 kW
Machine dimensions
Height 2930 mm
Width 3200 mm
Length 2600 mm
Weight 2500 kg

Temperature 20–30 °C
Humidity 20–40 % RH
Hours of operation 24/7 operation
Startup time Typically within 20 min.
Time required to fill the polymer 15 minutes
Tank volume 60 litres (2×30 litres)
Monthly maintenance allowance Approximately 15 hours (depends on the process)

Serving staff 1.5 person/shift
Production premises requirements Approximately 200 m² (10×20 m)
Minimum ceiling height of 4 m
A space with little dust is required
Other special requirements Appropriate exhaust air treatment
Dry compressed air
Inert gas
Ventilation requirementsVentilation requirements Typically 2500 m³/h ‑ for production line + peripherals (for line with one spinning unit)

Easy transition from laboratory scale to industrial production

Nanospider™ NS 4S1000U

Nanospider™ NS 4S1000U enables the production of roll‑to-roll nanofibers on a semi‑industrial scale. The line is capable of producing a nanofiber layer 1000 mm wide and can be supplemented with external peripherals. It is an ideal solution for those who are ready to scale up their process from a laboratory concept to moderate volume production, to fine tune the entire production process, and to seed the market. The NS 4S1000U is also ideal as a production line for high value nanofiber materials that have lower annual volume requirements.

Technical specifications of the NS 4S1000U production line

Number of electrospinning units 1
Number of application modules 2
Modules can also be operated independently with different polymers
Total number of spinning electrodes 4 (2 per module)
Spinning electrode width (adjustable width 300‑1000 mm)  1000 mm
Electrospinning voltage 0–140 kV
Unwinding speed (depending on desired nanofiber layer) 0,2–12,0 m/min.
Distance from the electrode to the substrate 150–250 mm
Electrical Consumption 6 kW
Machine dimensions Height 2450 mm
Width 2300 mm
Length 2100 mm
Weight 1500 kg

Temperature 20–30 °C
Humidity 20–40 % RH
Hours of operation 24/7 operation
Startup time Typically within 20 min.
The time required to fill the polymer 10 minutes
Tank volume 20 litres
Monthly maintenance allowance Approximately 15 hours (depends on the process)

Serving staff 1 person/shift
Production premises requirements Approximately 100 m² (10×10 m) 
Minimum ceiling height of 4 m
A space with little dust is required
Other special requirements Appropriate exhaust air treatment
Dry compressed air
Inert gas
Ventilation requirements Typically 2000 m³/h ‑ for production line + peripherals (for line with one spinning unit)

Necessary peripherals for NS 8S1600U and NS 4S1000U lines

Precise air conditioning

The atmosphere within the electrospinning chamber is one of the most important factors that affects fiber morphology and process performance. For most polymer solution formulations, the target relative humidity is in the range of 20‑50%, with a temperature range between 18‑30°C. The air conditioning unit is designed to ensure precise regulation of temperature and relative air humidity inside the electrospinning unit.

MORE ABOUT AIR CONDITIONERS

Polymer mixing station

Polymer solutions for use in the electrospinning unit are prepared in the PMS. The stainless steel mixing vessel has an integrated water circulation system that heats and cools the polymer solution during preparation. The entire process of preparing the polymer solution is designed to minimize operator intervention and the operator is not exposed to the solvents or polymer solution because a closed system is utilized.

Unwinding and rewinding

The unwinder and rewinder consists of steel frames with precision motors driving shafts holding the uncoated and nanofiber coated substrate rolls. We partner with external suppliers to provide this equipment, including safety fencing, based on our specific requirements for nanofiber production.

Adhesion module

The adhesion module applies a thin film of a liquid dispersion adhesive to the substrate in order to improve the bonding of the nanofibers to the substrate. The goal is to increase the durability of the nanofiber coating and reduce the potential for delamination. The equipment allows for adjustability of the amount of adhesive applied to the substrate and is also capable of coating smooth or slightly structured (e.g. - corrugated) substrates.

Hot air dryer

The primary purpose of the hot air dryer is to remove residual moisture from the application of the adhesive solution. It is critical to properly dry the material before rewinding to avoid adjacent layers from bonding together. The hot air dryer is always used in conjunction with the adhesion module. Since the exhaust air from the hot air dryer will contain a small amount of solvent vapor, it is necessary to route the exhaust to the waste air treatment system.

Endless belt collecting electrode

The Endless Belt (EB) collecting electrode (CE) enables electrospinning onto substrate materials with a higher range of surface resistivity (1010 - 1016 Ohm) which cannot be used with the standard wire collecting electrode. Using the EB can also improve the cross‑direction uniformity of the nanofiber coating by reducing the impact of the base substrate non‑uniformity. Since the substrate is electrostatically adhered to the belt material in the Nanospider™ chamber, the mechanical support of the substrate is dramatically improved and an electrical motor system is provided to move the belt at the same speed as the substrate.

Textest - online air permeability measurement

The quality of the nanofiber coated material is continuously monitored by the Textest equipment that measures air permeability or pressure drop. This third‑party equipment is industry standard for quality control.

Tent with support roller/rollers

The tents contain a system of rollers which support and prevent deformation of the substrate material. The tents also minimize the mixing of the atmosphere inside and outside the chamber to help ensure stable conditions for electrospinning.

Data storage and remote access

The data storage system records critical process data and machine settings which are used as production records. The data can be accessed via a local network connection. The system is also configured with a private and secure VPN which can be accessed for remote diagnostics and service requests.

Waste air treatment

Since the electrospinning process involves the use of solvents, the resulting emissions must be treated to minimize air pollution and we can provide this hardware through third‑party vendors. The specific concentrations and flow rates depend on the machine settings which are specific for every product. Through third‑party vendors, we can provide the appropriate hardware to eliminate the harmful emissions.

NS 3S500U - equipment for research and small‑volume production

The NS 3S500U electrospinning machine is a versatile tool for the research and development of nanofiber products, as well as for small‑scale production. It combines the features of a high‑end laboratory instrument with the possibility of industrial production.

Flexibility of used polymers and substrate materials

The NS 3S500U device allows electrospinning a wide range of polymers, including highly viscous polymer solutions. These can be spun onto many types of base material including cellulose, synthetic materials or fiberglass.

Nanospider™ needle‑free technology enables easy process optimization. Adjustment of most process specifications is possible using the touch screen.

Quality and safety

  • Made from FDA certified materials
  • Meets all CE requirements
  • Security door locks
  • Safety switches
  • Integrated substrate material rewinding

NS 3S500U functions and recommended use

The device is equipped with a peristaltic pump for continuous filling, with the ability to constantly mix the solution. This allows for an automated operating mode, and the device is also suitable for small‑volume production of nanofibrous materials.

  • The fastest upscale for industrial production
  • The material produced has high performance/yield and uniformity compared to needle technologies
  • 500 mm wide layer of nanofibers
  • Allows control of all process parameters (voltage, substrate speed, die size, application head speed, wire distance from the substrate, and others)
  • Continuous operation up to 8 hours (depending on the polymer solution and device setting)

Expanded research and production capabilities thanks to additional types of electrodes

In addition to the standard wire electrode, each NS 3S500U machine is equipped with two additional types of collecting electrodes - a rotating electrode and an endless belt. These can be variably changed according to your needs, significantly expanding the possibilities of work on the NS 3S500U machine.

Rotating electrode

The rotating electrode allows a wider utilisation of the NS 3S500U machine. The wire collecting electrode is replaced with a cylindrical electrode. Due to the built-in drive it is possible to spin individual collectors to speeds of up to 2000 RPM, which, depending on the collector diameter, allows to achieve the peripheral speed of up to 10 m/s. This type of collecting electrode is recommended for preparation of samples with oriented fibres or materials comprising successively overlapping nanofiber layers.

Endless belt

As a collecting electrode, the endless belt enables electrospinning on substrate materials with a wider range of volume resistance (1010 – 1016 Ohm) that cannot be used with the standard wire collecting electrode. The substrate layer is fastened to the belt using electrostatic force, which significantly improves the mechanical support of the substrate material. Thanks to the electric motor, the belt moves at the same speed as the substrate material so there is no undesirable stress. In addition, the standard belt can be replaced with a PTFE version, which can be operated without substrate and used for direct spinning thanks to its drive.

NS 3S500U technical specifications

Stationary electrode string system
Number of spinning electrodes 3
Spinning electrode width 500 mm
Integrated one‑way substrate material unwinding/rewinding
Electrospinning tension 0‑100 kV
Unwinding speed 5‑5000 mm/min.
Electrode distance from the substrate 120‑240 mm
Effective width of the nanofibrous layer 300‑500 mm
Continuous solution pumping (depending on polymer/solvent solution) up to 8 hours
Operation time in batch mode (depending on polymer/solvent solution) up to 60 min.
Consumption
Power consumption (up to 5.4 kW when external winding is connected) up to 1,4 kW
Dimensions
Height 2250 mm
Spinning electrode width 1640 mm
Length 1470 mm
Weight 510 kg

The stated dimensions are without peripherals, incl. additional aluminum frame

Accessories
Solution containers
Production mode Type of trays Volume
Continuous pumping Peristaltic 1 000 ml
Batch mode Standard 50 ml x 2
Batch mode Small 10 ml x 3
Optional collecting electrode
Rotating electrode Endless belt
RPM: up to 2000 Speed: 5-5000 mm/min
Cylindrical collectors Collectors: PU, PTFE
Peripheral speed: up to 10 m/s  
Additional aluminum frame for easy sample collection
Integrated fire extinguishing system
Optional peripherals
(NS AC 150) Air conditioning unit
External base material unwinding and rewinding

Throughput Depends on the polymer, substrate, process and fiber diameter
Effective nanofiber layer width 300‑500 mm
Operating temperature 20‑30 ºC
Working humidity 20‑40 % RH
Process air flow 30‑250 m3/hour

Serving staff 1 person
Production premises (when connecting external winding 4x6 m) 4×4 m
Extraction ventilation connection required
Power (adapted for networks in all countries) 230 V
Power supply (external winding) 3×400 V
Exhaust ventilation 250 m³/hour
Compressed air (for external winding only) 5 bars
Appropriate exhaust air cleaning required
Supply air connection for optional AC unit
Fire extinguishing system connection
External grounding

Background
Maximum width of the substrate roll 550 mm
Max. roll diameter (with external winding 500 mm) 400 mm
Possible substrate materials Cellulose, synthetics, fibreglass, films
Polymers
Versatile setup for soluble polymers
Thread specifications
Adjustable fibre diameters approx 80‑700 nm
Fibre diameter deviation typically +/- 30 %
Homogeneity of the transverse profile and winding direction typically +/- 5 %
All fiber specifications are polymer, substrate and process dependent

Optional peripherals for NS 3S500U

NS AC150 air conditioning unit

Air conditioning unit designed for Nanospider™ laboratory equipment and small‑volume production.

The NS AC150 unit supplies air with precise temperature and humidity levels to the NS LAB or NS 3S500U. Tightly controlling the temperature and humidity is critical to consistent and repeatable production of nanofiber materials.

MORE ABOUT AIR CONDITIONERS

External winding system

The winder ensures smooth unidirectional movement of textile, paper or synthetic substrate materials through the technological part of the line. The maximum roll width of the substrate is 550 mm with a maximum diameter of 400 mm.

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