Gliding capabilty

Good gliding capability is important for a smooth sewing process (without skipped stitches and thread breaks) and flawless stitch formation. Sewing threads and embroidery threads must be able to be processed under friction conditions that are as constant and low as possible. In addition to the surface properties of a sewing thread, which vary depending on its design, this quality feature is influenced by the lubricant application.

AMANN monitors the gliding properties and thus the lubrication application as a quality feature using a friction measuring device. The aim here is to simulate the stresses caused by the thread tension on the sewing machine. The sewing thread is fed through a tension disc under constant load and at a constant speed; the forces that occur are recorded by the friction measuring device. Trend diagrams of the thread tension show the results.

Minor fluctuations in the diagram indicate optimal lubrication application and ensure good sewability. Large fluctuations, on the other hand, are disadvantageous.