Web inspection provides real-time analysis across the full width of the wire to record and classify defects. Detailed reel maps are produced for review and to provide operators with a report on the nature of the defects and the overall product quality coming off the machine. Integration with the WMS cameras allows defect locations to be quickly found so the root cause can be identified and the problem corrected.
Papertech first introduced the wet end web inspection in 2008. WebInspector systems include a dedicated software package, and can be installed as an inspection only system or sychronized with a WMS (web monitoring system) operating with WebVision. Together, they make up TotalVision, a complete defect and break detection solution. WebInspector includes many of the same features as a WMS including:
- Same unified TotalVision platform: Both non-proprietary processors and cameras use the same components and database resulting in a truly unified architecture, needing less training, less maintenance, less spares.
- The lower cost solution: Primary design objective is for the least number of components and software features required for the system. All operate under the same unified TotalVision architecture.
- Superior GigE matrix cameras & synchronization: Most widely used high speed & high resolution GigE digital matrix cameras provide superior defect image quality and offer a range of image size and speed designs to suit each WIS application.
- Optimized lighting: A range of high-efficiency, LED lighting solutions that include WebLED28 or WebStrip units across the beam, or a custom length LED beam. All of our LED lighting uses the same pulsed output for cooling and energy efficiency.
- Camera lens cleaning: CleanRing proven lens air cleaning. For difficult wet-end & tissue applications, patented EverClean lens cleaning ensures web inspection performance is not compromised.
- Simple installation: Custom camera beam available with reflective and/or transmission lighting options (right). For installations no camera beam is required resulting in reduced space requirement, less components, and easier component access. GigE transmission with direct Cat cabling, power to cameras & lights direct 100 to 270VAC with no need for junction boxes.
The operator station monitors display the WIS camera views (left) and the reel map indicating the position of any defects in the
finished roll of paper. During the unwind, sections containing defects can be removed and marked.
Upgrades and Re-builds
In addition to new web inspection installations, Papertech can also upgrade existing systems with TotalVision components regardless of manufacturer. This upgrade at Arctic Paper Grycksbo in Sweden employs and TotalVision LED beam under the sheet for transmission lighting. The overhead camera beam was refitted with Allied Vision cameras to complete the upgrade (inset). For more information on this project, please refer to our press release.
WebInspector, Arctic Paper, Grycksbo
QualityVision is the latest addition to our line of web inspection systems. Designed as an enclosed beam for tissue converting lines, the QualityVision camera beam works with reflective and transmission lighting to assist in the optimization of converting output quality. For more information refer to our tissue applications page.
Papertech has recently introduced an online pulp dryer dirt count measurement camera system called PulpInspector, as an alternative to the labour intensive and inaccurate off-line manual measurement method currently used by many producers. PulpInspector’s high resolution cameras continuously analyze pulp quality for dirt, shives and any other non-desirable contaminants, such as metal. Other features include:
- software algorithms that result in all dirt PPM (parts per million) to be continuously measured multiple times per second, either in one section of the pulp sheet, or all the way across for a complete 100% sheet inspection. The inspection resolution is guaranteed to meet the TAPPI/ISO 0.2 x 0.2 = 0.04mm2 smallest dirt size requirement.
- Conforms to TAPPI/ISO pulp dirt count (see https://ipstesting.com/find-a-test/tappi-test-methods/tappi-t-563-visible-dirt/) , or pulp dirt analysis, a standard that has been used for off-line manual measurement for years to quality grade pulp. This results in a continuously reported PPM count that will closely match the manual batch method, but is more consistent and fully automated. Any dirt count changes are immediately detected and alarmed, providing operators with the tools they need to produce high quality pulp that is free of defects.
- PulpInspector is easily installed on any pulp dryer, and can be used on a range of pulp brightness. The user-friendly interface allows operators to continuously see the PPM dirt count, and to quickly review weeks of dirt count history and trends. PulpInspector can also be readily interfaced with various QCS/DCS systems, and to close loop control any final quality control of the bales.