AMORAN

 AMORAN (Amorphous Orientation Analyser)

AMORAN allows the non-contact, fast and precise measurement of the "amorphous orientation" of plastic fibers or films. The measured variable characterizes the arrangement of the molecules in the non-crystalline material parts, which largely determines the macroscopic material properties (e.g. strength and dyeability).


AMORAN is therefore an ideal device for:

  • Development, control and optimization of production processes
  • Research into structural development in the production process
  • Incoming inspection of critical further processing stages (e.g. stretching, dyeing)
Application areas

Polymer research
Through direct, contactless measurements, the know-how and know-why of structural development in production processes can be deepened.

Process development, plant maintenance
The rapid determination of the amorphous orientation greatly simplifies process development and maintenance of production facilities. Due to the high costs for test times and machine downtime, the costs for the purchase of the sensor are quickly amortized.

Textile finishing
With AMORAN, the quality of the input material can be monitored. Material of inferior quality can be recognized immediately and sorted out or a complaint can be made. This can reduce downtime and increase productivity.

Quality control
The measurements can be used to control production processes. As a result, products that are considerably more uniform or have narrower tolerances can be manufactured.

Specifications

Fields of application
  • Development, control and optimization of production processes
  • Research into structural development in the production process
  • Incoming inspection of critical further processing stages (e.g. stretching, dyeability)
Realized variants
  • Sensor for measuring polyester fibers and films
  • Sensor for measuring PET, PP, PA6.6, PA6 and PBT fibers and films doped with fluorescence probes
Measuring principle
  • Evaluation of the polarization of the intrinsic fluorescence radiation in PET
  • Evaluation of the extrinsic fluorescence of probe molecules in PET and other materials
Measurements
  • Moments P2 and P4 of the orientation distribution in the direction of the stretch axis for uniaxially stretched materials
  • Stretch ratios for biaxially stretched materials
  • Stretch direction (optional)
Components
  • light source
  • Special camera with power supply
interface
RS-232 interface to the evaluation computer

Software OSD (Windows)

OSD functions

  • Evaluation and display of the measured values
  • Import, export and simulation of measurements
  • calibration


Application example

PET spinning trials at the Institute for Man-Made Fibers (ITCF) in Denkendorf showed that the sensor measures the amorphous orientation with high accuracy and reproducibility. The measured values correlate with technically relevant fiber properties. The figure shows an example of the correlation between the orientation in the non-crystalline areas and the maximum tensile stress of undrawn PET yarns (as an indicator of structural differences in the fibers, which also affect subsequent processes such as drawing or texturing) at spinning speeds between 2000 and 4000 m/min. The sensor thus enables the prediction of processing behavior or fiber end properties.


Send us your samples for a first free test or let us convince you with a device demonstration in your house!


We would be glad to adapt our sensors to your needs or develop new functionality for your application.


Literature

  • Boger, S.: Online determination of the orientation in the non-crystalline areas of polymer fibers using the polarized fluorescence method; Dissertation at the University of Stuttgart in 2002
  • Amorphous Orientation in PET Fibers by Intrinsic Fluorescence 
    Chemical Fibers International, 1996, Vol. 3, pp.175-176
  • Clauss, B.; Hartrummel, M.; Bayer, A.; Oppermann, W.: Online Measurement of Amorphous Orientation in PET Fibers by Intrinsic Fluorescence; Chemical Fibers International, 1996, Vol. 3, pp.175-176
  • Clauss, B.; Salem, DR: Polymer 33 (1992), 3193
  • Clauss, B.; Salem, DR: Macromolecules 28 (1995), 8328
  • Executioner, DJ: Polymer 29 (1988), 437
  • Allen, N.S.: Makromol. Chem. 179:523 (1978).
  • Kimura, Kagiyama, Nomura, Kawai: J. of Pol. science A2, 7; 709 (1969
  • Nomura, Kawai, Kimura, Kagiyama: J. of Pol. science A2.5; E, 479 (1967)
Share by: