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Blown Film Line
The blown film extrusion lines from OCS are used to produce high-quality films for a variety
of applications. The lines use a unique process to convert the film bubble into a flat layer
film, which can then be measured for impurities, haze, gloss, density, and other characteristics.
The lines are also equipped with a variety of features that make them ideal for testing a wide
range of polymers, including PP, PET, PC, HDPE, and LDPE.
The lines use a combination of adjustable wooden grids and Teflon coated rolls to convert the film
bubble into a flat layer film. The grids are used to control the thickness of the film, while the
Teflon coated rolls help to prevent the film from sticking to the rolls. The lines also use a guiding
roll system to prevent wrinkles in the film.
An optical device measures the width of the flattened film and controls the diameter of the film bubble.
The tower height is electrically driven and adjustable, which allows the lines to be used to produce
films of different sizes. The take-off nip rolls are driven pneumatically and their temperature is optionally controlled.
All parameters of the system, e.g. extruder speed, temperature, haul-off speed, film width, film bubble
ratio, etc. are stored in the touch panel control system, which guarantees the reproducibility of the
film quality at any time.
The OCS blown film extrusion lines are a versatile and reliable solution for producing high-quality films
for a variety of applications. The lines are easy to use and maintain, and they offer a wide range of features
that make them ideal for testing a wide range of polymers.
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- Cleaning positions of the Measuring Extruder (ME) can be approached via electric motor
- Modular architecture of the Modular Film Analyser (MFA) to facilitate customisation of additional measuring and test devices
- Automatic control of the bubble diameter according to the preset film width
- Operation via touch panel with data trend as well as optical and acoustic alarm functions
- All system parameters are monitored and saved in the touch panel control system
- Measuring Extruder (ME20/ME25/ME30/ME40/ME45) with blown film die 30–80 mm
- Modular Film Analyser with Blown Film Tower (MFA-BFT)
- Film Surface Analyser (FSA100V2/FSA200V2)
Film Thickness Measurement (FTM)
The OCS Film Thickness Measurement (FTM) allows the continuous measurement of the thickness of
polymer film (flat film, blown film or tape). For measurement, the film is guided between two precision
rollers. One of the rollers is deflected according to the film thickness. This deflection is measured by
a digital probe and evaluated by microcontroller-based electronics. The measured value is shown on a
display and can be evaluated via analogue or digital interfaces.
Technical Details
| Measuring range | 0–5000 µm |
| Exactness | +/− 1 µm |
| Haul-off force | 1 N |
| Haul-off speed | 0–20 m/min |
| Communication protocol | MODBUS/RTU (further protocols on request) |
- OCS Cast Film Line
- OCS Blown Film Line
- OCS Tape Line (TCA)
- OCS Modular Film Analyser (MFA)
Gloss Measurement (OGM)
The OCS Gloss Measurement (OGM) is designed for the constant and precise control of film gloss properties.
The measuring device is integrated into the Modular Film Analyser (MFA). It enables a continuous measurement
of the gloss value on polymer film. The gloss properties of films are analysed based on their different ability
to reflect light. A special LED lighting unit illuminates the continuous film while a photo diode measures the
strength of the reflected light. The measured amount of gloss, from matt to glossy, is given in GU (Gloss Units).
Features
- Robust, precise measuring unit
- Gloss measurement in GU (Gloss Units), matt to gloss
- Alarm function when limit value exceeds or falls below a specified range
- Continuous measurement of the gloss value as well as calibration according to ASTM D523, DIN 67530, DIN EN 14086 and ASTM D2457
Technical Details
| Measuring area | 60°: DIN 67530, 45°: DIN EN 14086, 45°: ASTM D2457 (0–150 GU), area 3 cm |
| Measuring range | 0–200 GU |
| lndicator resolution | 0.1 GU |
| Averaging | 1–50 s |
| Detector | Silicon photo detector with spectral evaluation |
| Communication protocol | MODBUS (RTU, TCP/IP), PROFIBUS, PROFINET, OPC (Server/Client), CSV file, customer-specific |
- OCS Cast Film Line
- OCS Blown Film Line
- OCS Modular Film Analyser (MFA)
Haze and Transmission Measurement (OHM)
The OCS Haze and Transmission Measurement (OHM) is used for the automated and continuous measurement
of the haze properties on polymer film. It additionally determines the transmission average. The
measuring instrument is integrated into the Modular Film Analyser (MFA) or can be used as a stand-alone
version (tabletop unit).
Features
- Continuous haze and transmission measurement
- Simple multi-point calibration
Technical Details
| Measurement range haze | 0−100% |
| Mesurement range transmission | 0−100% |
| Accuracy | +/− 0,2% |
| Measured area diameter | Ø 22 mm |
| Spectral adaptation | CIE standard spectral value function V (λ) under standard light type C |
| Communication protocol | MODBUS/TCP |
- OCS Cast Film Line
- OCS Blown Film Line
- OCS Modular Film Analyser (MFA)
Spectroscopical Measurement APLAIRS®
APLAIRS® (Analysis of Plastics by InfraRed Spectroscopy) is a spectroscopic method for
measuring additives, (co-)monomer compositions and chemical and physical properties in
the production of polyolefins. This concept allows the automation of the daily continuous
measurement requirements for quality control. For this purpose, the polymer film runs through
the APLAIRS® system, which is equipped with an FTIR spectrometer and specially developed software.
The measurement takes place in real time. The spectra are recorded and properties are predicted,
documented and graphically processed. The results can also be transferred to superordinate systems.
This ensures continuous quality control and documentation and the resulting reliable control of
various processes. The automated sample preparation leads to personnel savings and significantly
reduces labour costs.
Features
- Using the software, continuous recording of spectrums and prediction of analysis data (every three minutes)
- Robust and precise FTIR spectroscopy
- Conventional as well as multivariate analysis can be applied to predict the analysis data
Application Areas
- Analysis of materials, such as LDPE, LLDPE, HDPE, PP, ABS, PS, PET, EVA and PC
- Analysis of additives such as antioxidants, lubricants, UV absorbers, stabilisers, fillers, processing aids, etc.
- Testing of physical properties, such as density in polyolefin, thickness, etc.
Compatible with
- OCS Cast Film Line
- OCS Blown Film Line
Label Printer (LP100)
The OCS Label Printer (LP100) ensures the highest quality standards with regard to the
labelling of, and repair of defects on, polymer films. Simple operation enables reliable
and fast printing.
Features
- Reliable and fast printing
- Precise impression
- Easy operation
- Compact design
- Meets the highest quality standards
Compatible with
- OCS Tape Line
- OCS Modular Film Analyser (MFA)