Rotary Die Scoring Stress Wave Signal Acquisition
Real-time acoustic stress wave monitoring on rotary die scoring lines detects paperboard matrix micro-cracking instantaneously, reducing convert scrap by up to 80 percent.
Fiber Fracture Detection
Structural Monitoring
Non-destructive testing methods track the initiation and propagation of internal damage in paper materials during tensile stress. Through fiber fracture detection, converters can pinpoint the exact moment when individual structural bonds begin to fail before the entire sheet snaps. This technique measures microscopic sound waves or changes in light transmission as stress increases.
It allows researchers to evaluate how different refining intensities and chemical additives influence the internal strength of the paper web.
Failure Analysis
Tensile testing machines often pull a test strip to complete rupture without showing where the first internal breaks occurred. Acoustic emission sensors attached to the specimen catch the waves released during fiber fracture detection trials. These signals differentiate between the sliding of fibers and physical rupture.
Quality Control
High-speed packaging lines expose paperboard to rapid bending and scoring forces that can weaken the finished carton. By implementing fiber fracture detection during the converting process, a plant can adjust the creasing tools to avoid cracking the outer plies of the board. This real-time analysis reduces waste by catching micro-cracks before the packaging is filled with product.
It provides a reliable benchmark for comparing the runnability of recycled board against virgin kraft grades.