In today´s tissue production, web breaks and a range of other substrate defects present significant challenges in all types of tissue machines, converting and layering operations. Reducing breaks and surface defects is an important objective, given the increasing speed and operating complexities of present tissue production environments.

ISRA´s complete set of camera-based web monitoring and inspection systems covers the whole process chain from pulp to reel. In addition, our systems and software solutions help optimize efficiency in the entire production chain – from tissue formation to the ultimate delivery of the manufactured product to the customers. This complete inspection setup enables manufacturers to significantly reduce costs caused by avoidable web breaks in the slitting and winding process. Additionally,  accurate defect reports generated for each cut roll offer 100% production documentation.

> Straight to all benefits at a glance.

All installed components in a tissue machine are exposed to harsh environments with dirt, moisture, and high temperatures in which optical-electronic devices operate very delicately. On top of that, a reduction in maintenance costs is always a welcome addition.

To withstand these environmental conditions and minimize exposure, ISRA WBM System utilizes a special housing for the high-performance camera for web break analysis that always guarantees perfect image quality.

Even the smallest details become visible with the camera so that faults can be automatically detected early in the development process and stopped in time before costly events occur. 

To reduce web breaks and costs in downstream processing of tissue products, the Converting Control System (CCS) detects surface defects recorded by the inspection system on the Tissue machine. At double-width tissue machines, an additional middle-cut detection feature inspects the quality of the edges along the cut, and the production data is stored for later processing and retrieval. The CCS enables synchronization of the defect positions on the different layers. The layer-independent defect position to control the speed of the converting line is then transmitted by the CCS. Thus, web breaks will be drastically reduced in tissue-converting lines.

The flexible Unwind Control System accurately assigns defects and precisely synchronizes the defect database for each roll using a code marking applied to the web edge. This ensures that defects can be clearly assigned by location on the sheet in the next production stage, regardless of paper losses incurred in the process.

The UCS can be integrated at various points in the process, such as the reeler, the offline coating, calenders, or winder.

Jorma Jaervinen
Global Sales Manager

Phone:
+49 (2408) 92700-0
E-Mail:
Jjaervinen@isravision.remove-this.com