The best way to avoid off-quality is simply not to make it. Identifying problems at an early point in fabric production prevents defects and enables weavers to deliver constant quality and stay competitive in the market. The fabric monitoring system Uster Q-Bar 2 monitors the fabric at the earliest point – the critical stage in fabric formation – with automatic, in-line inspection.
Q-Bar 2 developed by Uster Technologies AG, Uster/Switzerland, is a formation monitoring system, positioned directly at the interface of warp and weft threads. That allows rapid response as soon as a defect appears, avoiding long-running or repeating faults. Alarm and stop signals alert the operator to correct problems immediately.
Weaving defects can have various root causes, so Uster Q-Bar 2 provides different algorithms to identify specific defects and their causes. This in-built knowledge can prevent defects within the weft insertion cycle. It allows detection of incorrect warp positions, missing warp, loose warp ends and even pattern irregularities.
Fabric inspection solutions from Uster are also available for the control of weft irregularities. By monitoring each inserted weft in the formation area, Q-Bar 2 primes users to react to weft irregularities at the earliest possible stage. At this point, it can detect weft-related defects such as double picks, broken weft or slubs and loops.
The new innovations provide supervision of all areas of web formation, fabric inspection and critical machine units in the formation zone. It recognizes pattern defects and enables better further processing along the value chain.