Tissue Applications

Online Inspection for Embossed & Printed Product

Embossed and printed patterns or a combination of both have become a vital component of potential product differentiation among tissue converters. As such the quality of the embossing and/or print has also gained in importance.

Papertech’s patented QualityVision™ solution provides online embossing/print quality inspection. With proper converting line control system integration, QualityVision™ can be used to eject poor quality product from the machine, ensuring that it is not packaged and delivered to the consumer.

Online web & embossing quality measurement has these built-in capabilities:

Learns Printed or Embossed Repeating Pattern
Provides Very Basic Web Inspection
Line-Scan Camera Based

Online web & embossing quality measurement.

QualityVision™ Results

Machine/Line: Away-from-home converting line speed: 800 m/min
web width: 2600mm product: Away-from-home tissue basis weight: 25-47 g/m2

Papertech’s TotalVision™ solutions are often instrumental in achieving required OEE results. Papertech assists companies in calculating the impact a vision solution can have on their OEE and other performance metrics. Below are some results for web monitoring (WMS) and web inspection (WIS) that demonstrate this. In addition, Papertech has developed applications that address specific processes in tissue manufacturing.

An inspection system using individual cameras and lights on a tissue machine

WebVision® Results

Machine/Line:

Tissue speed: 1450 m/min
wire width: 3600mm
web width: 3300mm
product: Bathroom Tissue
basis weight: 14-21 g/m2

WebInspector® Results

Machine/Line: Specialty process, rewinder

speed: 1925 m/min
line width: 2650mm
web width: 2300mm
product: Bathroom tissue
Basis Weight: 5-20 g/m2

WebView pinhole housing design ensures clear images.

New quality-based line speed control

Papertech’s Slow-on-Defect converting line speed control system enables line speed control based on the quality of product to be converted. Line downtime due to unexpected quality related process interruptions can be greatly reduced, improving line availability and therefore OEE.

Many converting line operators are used to loading parent reels on their lines without knowing anything about the quality of the tissue they are expected to convert. Unfortunately, the quality of the base tissue web has a lot to do with how efficiently the converting line can operate. Large holes, edge tears, folds and creases can all lead to process interruptions when the line speed is too great to allow the defects to pass through the various converting processes without issue.

Fortunately, web inspection systems on tissue machines can capture all web defects contained in a reel. A parent reel quality report defining the location of each defect in the reel can be passed to a converting line when a parent reel is loaded into the unwind cradle. New quality-based line speed control systems can interpret the quality report and can control the converting line speed based on predefined criteria. In this manner a line can slow to a crawl to pass a large hole and then speed up again when no web defects are expected. The converting process is not interrupted, and line efficiency is not compromised by the usual web break, clean-up and line restart process.

Slow-On-Defect sample video

Want to know more about our tissue applications?

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Papertech has agents and reps in all regions, send an email to sales@papertech.ca and we’ll put you in touch with the one closest to you.