Real Time Size Add on Sensing and Adaptive Squeeze Control in High Speed Bast Warp Sizing
Real time microwave sensing and adaptive squeeze roll pressure tuning stabilize bast warp size add-on to maximize loom efficiency and cut yarn breaks.
Near Infrared Reflectance Spectroscopy
Analytical Testing
Non-destructive measurement of organic chemical composition uses light absorption patterns in the near-infrared region to analyze textile raw materials. The application of near infrared reflectance spectroscopy allows rapid determination of moisture content and residual wax on flax fibres. This technique provides instant data without the use of chemical solvents.
It is deployed at the mill reception point to verify incoming stock quality.
Spectral Analysis
The instrument illuminates the prepared fibre sample with a broad-spectrum light and measures the intensity of the bounced radiation. High-frequency vibrations of molecular bonds, particularly nitrogen-hydrogen and carbon-hydrogen groups, absorb specific wavelengths. A computerized sensor records these absorption peaks and compares the resulting spectrum against a pre-calibrated reference database of known compositions.
This method bypasses the lengthy wet chemistry procedures typically required to measure the sizing concentration on processed linen yarns, saving valuable processing time. By providing results in less than two minutes, the system allows the mill to make immediate adjustments to the yarn washing bath when residual chemical levels exceed the target thresholds.
Laboratory Control
The lab chemist generates a spectral report for every processed batch of yarn before it moves to the weaving stage. The mill records this digital file alongside the batch number in the quality assurance database. Buyers of premium linen demand these precise records to verify the chemical consistency of the sizing and washing treatments.
Accurate use of near infrared reflectance spectroscopy ensures that subsequent dyeing stages produce uniform fabric colors.