Functionalisation I Composites
Technical Equipment
The STFI provides the whole development process: starting from developing formulations for functional dispersions and thermoplastics and their characterization to small-scale samples and the up-scaling to small-quantity manufacturing on semi-industrial pilot equipment.
An overview of our machinery equipment for surface functionalization and composite formation can be found here.
Any questions?
Your contact
Dr. rer. nat.
Ralf Lungwitz
Manager Functionalisation I Composites
Phone: +49 371 5274-248
Dispersing & compounding
- noris-ZSC 25, Noris Plastic GmbH & Co. KG
| Screw length Screw diameter Screw speed Screw torque (single) Heating / cooling zones Dosing Throughput Strand cooling by water bath, drying by blower and strand pelletizer Venting by vacuum pump possible | (L/D) 36 25 mm max. 800 rpm 82 Nm 8 (max. 300 °C) 3 x solid, 1 x liquid 1 up to 40 kg/h |
- Incorporation of additives
- Reduction of particle sizes, precise, narrow particle size distribution
- Homogenisation of dispersions
Available facilities:
|
- Hansa-Pico-Mix, Hansa Industrie-Mixer GmbH & Co. KG, Stuhr/Heiligenrode
| Throughput Foam densities Viscosities | 1,2 – 12 kg/h 50 – 800 g/l up to 4000 mPas |
Material characterisation
- MCR 502, Anton Paar GmbH, Graz, Austria
| Measurement of rheological properties (shear viscosity, complex viscosity, yield point, loss modulus, storage modulus of Thermoplastics Dispersions and suspensions In-Situ UV-LED curing possible | up to 450 °C up to 210 °C |
- BP100, Krüss GmbH, Hamburg
| Determination of the dynamic surface tension Surface age (bubble age) Temperature controlled Characterisation and optimisation of liquids, inks, finishing liquors regarding to dynamic processes like spraying, coating and printing | from 10 - 100 mN/m 5 – 200.000 ms from -10 °C up to 130 °C |
- DSC-60, SHIMADZU CORPORATION, Kyoto, JP
| Temperature Heating rate Heat flow range | up to 600 °C 0 – 99 K/min ± 40µW |
- DSA25 Expert, Krüss GmbH, Hamburg
| Drop shape analysis with high speed camera Software controlled dosing system Determination of free surface energy of solids Determination of the surface tension of liquids (pendant drop method) | up to 2300 fps |
- JetXpert, ImageXpert Inc., Nashua, USA
- In flight drop characterisation and statistical analytics
- Check of printability of fluids and inks
- Waveform engineering for printhead Ricoh MH 5420 (Gen 5)
- Open for other printhead manufacturers
- Particle Size Analyser PSA 1190 LD, Anton Paar GmbH, Graz, Austria
Determination of particle sizes by using multi-laser technology
| Measuring range of wet dispersed samples Measuring range of dry dispersed samples | 0,04 µm to 2500 µm 0,1 µm to 2500 µm |
| Optional use of a small volume unit for minimal volumes (e.g. costly samples) |
Coating & finishing
- Werner Mathis AG, Switzerland
- Semi-automated
- Knife coating (air, roll and blanket)
- Quick lamination unit
- Coating speed from 0.1-4.0 m/min
- Werner Mathis AG, Switzerland
| Working width Speed Squeezing pressure | max. 500 mm 0,1 – 10 m/min 0,5 – 6 bar |
| Impregnation in bath and nip Fluids: water-based, cold pad dying | |
BA 6792
- Werner Mathis AG, Switzerland
| Parameters: Working width Speed Temperature | max. 500 mm 0,1 – 5 m/min max. 230 °C |
| Application units: Padding unit Knife coating unit (air, roll and blanket), direct and transfer Wet- and dry lamination unit (substrate thickness) Reverse-Roll-Coating unit Slot die unit (Bead-Coating-, Curtain-Coating-, Web-Tension-Mode) Experimental set-up for digital printing and coating | max. 30 mm |
| Additional: Inline Corona pre-treatment Spraying unit | max. 1,6 kW |
Drying and curing | > 3000 nm max. 230°C 365 und 395 nm |
| Fluids and pastes: Water-based dispersions, foames, sol-gel systems, rubber, silicones, plastisols, high-solid systems, UV-curable systems | |
- Stentex GmbH, Gera
| Parameters: Working width Working speed Temperature Dryer length Heating zones | 0,5 – 2 m 2,4 – 40 m/min 25 – 250 °C 6 m 4 |
| Application unit: Padding unit |
- Suchy Textilmaschinenbau GmbH, Korbußen
- Slot die FKV series Robatech GmbH, Bad Camberg
| Working width Temperatures Speed at RnD mode | 200 mm up to 800 mm up to 230 °C up to zu 5 m/min |
- Lab scale dyeing unit type JFO, Werner Mathis AG, Switzerland
| Sample weight High temperature treatment pre-/posttreatments, dyeing | up to 1,2 kg |
| Application methods | Jet dyeing Drum/barrel dyeing cross-wound bobbin dyeing Small mug dyeing |
- Laborjigger, Ernst Benz AG, Switzerland
| Web width Heated bath Speed Automated passages | max. 500 mm max. 95 °C 0,5 – 11 m/min |
Lamination & joining
- Anger Electronic GmbH, Austria
- Calendaring by two heated rolls: Teflon roller / rubber roller
| Width Temperature Speed Gap adjustment Pressure | max. 600 mm max. 220 °C max. 5 m/min 0 – 50 mm max. 6 bar |
- MPBL 800 CV, Lacom Vertriebs GmbH
| Parameters: Application width Application weight Application speed Viscosity Temperature Full cover, dot pattern coating | max. 800 mm 5 – 350 g/m² 0,5 – 20 m/min 2000 – 80000 mPas max. 230 °C |
| Components: flat roller, engraved rollers (CP96, CP103, truncated pyramid) Inline corona pre-treatment Additional rewinder for transfer coatings | max. 1,6 kW |
- Thermofix® LP, Schott & Meissner Maschinen- und Anlagenbau GmbH, Blaufelden
| Parameters: Width Speed Gap adjustment Temperature Pressure (calendering roller) | up to 800 mm 0,1 – 20 m/min 0 – 140 mm 25 – 235 °C 0 – 7 bar |
| Components: Powder scatterer with different rollers (fine, medium, coarse) for hotmelt adhesive powders and fibres Processing of thermoplastic hotmelt adhesives (webs, nets, nonwovens, powder) |
Functional Printing
- Fabrikat CVM GmbH, Neukirchen
Application units for functional printings:
- Filament-Extruder for application of thermoplastic Filaments (Fused Layer Modeling)
- Application head with needle valve for application of thermoplastic polymers (powders, granules)
- Dispensing for application of different coating pastes and inks (water-based dispersions, plastisols, high-solid systems, UV-curable systems)
| Parameters: Print bed size Printing height Temperatures UV-LED – Spot Wavelength | 700 mm x 1200 mm max. 130 mm max. 256°C or 220°C 365 nm, 385nm, 400nm |
- Systec Industrial Systems GmbH, Münster
| 3 different application heads: Filament 2K-Mixing head for inks Jetvalve for inks and reactive systems Print bed size Printing height Heated printing bed Heated printing space | up to 350 °C 650 x 850 450 mm up to 100 °C up to 60 °C |
- aQ-1212R, druckprozess GmbH & Co. KG, Eisenach
- printhead: MH5420 (Gen5), Ricoh Printing Systems America Inc., USA
| Print bed size CMYK water-based Pigment ink (Diamontex P) 2 additional printheads for functional inks Inline NIR-drying Lambda Physics (NIR-Powerheat PH MF U 5-1, Lambda Technology GmbH, Grafing) | 1200 x 1200 mm² up to 2700 W |
| Micro valve print head, drop-on-demand Maximum nozzle size | 180 µm resp. 350 µm |
- RP 2.2, Rokuprint GmbH, Dornstadt
| Universal screen printing machine for flat printing applications Pneumatic squeegee unit with separately adjustable pressure and pre-squeegee Printing format | up to 700 x 320 mm |
Laser processing
- Avia X355-10, Fabrikat Laser On Demand GmbH, Hannover
| Parameter: Wave lenght Editing area | 355 nm (10 W) 120 x 120 mm² (Scanner) |
- Fabrikat Laser On Demand GmbH, Hannover
| Parameter: Wave lenght 1 Wave lenght 2 Editing area Sheet-to-Sheet, Roll-to-Sheet and Roll-to-Roll | 355 nm (14 W) 10600 nm (80 W) 700 mm |
- M-1200, Fabrikat eurolaser GmbH, Lüneburg
| Parameter: Wave lenght Editing area Engrave and cut in greyscale | 10600 nm (400 W) 1200 x 1200 mm² |
Fields of application
Research News
CarboCopTex
The objectives of the project are the development of conductive carbon black (carbon) and copper (copper) based formulations, which enable the generation of electrically conductive, dissipative and sensory structures on textile substrates and represent a significantly more cost-effective alternative to silver-based systems. In addition, the focus is on the development of single-layer and multilayer structures, taking into account textile-ink interaction and film formation between copper and carbon black layers.
Contact
Tobias Richter, M. Sc
+49 371 5274-285
Email
C6C8 turn GREEN – An ecological alternative for fluorocarbon finishing
The demand for permanent water-, dirt- and oil-repellent properties of functional textiles is achieved according to the current state of the art by application with fluorinated polymers (FP) or per- or polyfluorinated low molecular weight chemicals (PFC).
The beneficial properties achieved with FP on textiles are offset by ecological and human ecological risks. Currently, leading manufacturers of textile auxiliaries are engaged in the development of high-performance fluorine-free products. Unfortunately, studies show that these products do not meet the requirements in the area of oil repellency compared to fluorocarbon finishing. With the development of fluorine-free surface modifiers, the project aims at a sustainable finishing of textiles without limiting their functional properties. Ultrahydrophobic, oil-repellent and soil-repellent textile finishes are to be synthesised and applied according to a novel concept. The developments are aimed at small or medium-sized companies in the field of technical textiles, HOMETECH, PORTTECH, MEDTECH, PROTECH, MOBILTECH. With the use of functional finishes, these companies are to expand their business using their core competences.
Contact
Dr. rer. nat. Ralf Lungwitz
+49 371 5274-248
Email
Cooperations & Networks
