Paper360 - September/October 2016 - 54

techlink | FELT CLEANING Klingele Papierwerke Saves Money, 'Foils' Stickies KENTARO TAJIRI AND THOMAS WISCHEROPP For years, Klingele Papierwerke in Weener, Germany, had suffered from less than ideal conditions on its first top dryer fabric, including short fabric life and serious sheet moisture profile variation. The mill had used "spot cleaners" and off-line washes, yet was not satisfied with running and maintenance costs and the detrimental effect of stickies on sheet profiles and paper quality. This type of system-traversing "spotcleaners" using high-pressure water and air to force contaminants out of the fabric and maintain a working permeability-is common in many mills. While there have been improvements to the systems available on the market, many issues still remain. First, the jets operate on only a very small portion of the fabric at a time, meaning the interval before the same area is cleaned again can be as much as 20 minutes or so. Further, the use of high-pressure jets is not ideal on any fabric. Some mills report premature damage to the integrity of the fabrics and even to the fabric rolls and framework, which must be cleaned from corrosion. In addition, foreign material is often forced deeper into the fabric, ultimately degrading the yarn interstices, reducing fabric life. There is also a high cost associated with running the water and air systems, maintaining the equipment, and regularly assessing that the cleaner is operating effectively. Searching for a different solution, the mill learned of a felt cleaning system developed by Aoki of Japan, then being used in about 50 Japanese installations. In 2012, Klingele Papierwerke purchased the first AOKI Cleaner to be delivered into Europe. "We had a decision to make," explains Mill Manager Thomas Wischeropp. "Should we persist with the standard cleaning systems, with their high demand on utilities and manpower, or try the Aoki system, which promised to minimize effort and downtime and maintain a quality sheet? Maybe 54 Fig. 1: The AOKI Cleaner the answer is obvious now, yet (at the time) systems common in the marketplace had been improved, while the Aoki product was an unknown entity." THE AOKI APPROACH In 2004, Aoki of Japan's chief designer, Mitsuo Aoki, determined that effective fabric cleaning should have two main features. First, it should apply to the full width of the fabric and be continuous. Second, the principle should be to prevent contaminants achieving significant ingress in to the fabric. In short, cleaning must be gentle, consistent, proactive, and continuous. The outcome of an intense two-year development program was the AOKI Cleaner: a purely mechanical system that is now commonplace in Japan on a range of furnishes and speeds. It services brown grades and fine papers alike and can be run up to 2,000 m/min. Paper360º SEPTEMBER/OCTOBER 2016 The AOKI Cleaner (Fig. 1) uses a principle well-known to papermakers: a foil effect that induces the surface contaminants to gather onto a cleaning blade and are thus gently coaxed from the fabric surface. The blade oscillates slowly sideways to assist this function and the foils are made from a material specially designed by Aoki to do no damage to the fabric yarns, whether round, flat, "spiral" or even twisted multifilament. www.tappi.org http://www.tappi.org

Table of Contents for the Digital Edition of Paper360 - September/October 2016

Setpoint
Over the Wire
Agenda 2020 Launches ‘Roadmaps’ to Efficiency, Sustainability, and New Product Goals
RBI: Transforming to Meet the Industry’s Research Needs
Paper Schools: Forging the Future
PPI Top 100
RISI’s Latin American CEO of the Year
Automation Upgrade Helps Sappi Gratkorn Perform
Innovative Direct Drive in a Turnkey-rebuilt Project
Klingele Papierwerke Saves Money, ‘Foils’ Stickies
TAPPI Journal Summaries
Life Cycle of the US Paper Industry
TAPPI News
ASPI News
Index of Advertisers
Paper360 - September/October 2016 - bellyband1
Paper360 - September/October 2016 - bellyband2
Paper360 - September/October 2016 - cover1
Paper360 - September/October 2016 - cover2
Paper360 - September/October 2016 - 3
Paper360 - September/October 2016 - 4
Paper360 - September/October 2016 - 5
Paper360 - September/October 2016 - Setpoint
Paper360 - September/October 2016 - 7
Paper360 - September/October 2016 - Over the Wire
Paper360 - September/October 2016 - 9
Paper360 - September/October 2016 - 10
Paper360 - September/October 2016 - 11
Paper360 - September/October 2016 - 12
Paper360 - September/October 2016 - 13
Paper360 - September/October 2016 - Agenda 2020 Launches ‘Roadmaps’ to Efficiency, Sustainability, and New Product Goals
Paper360 - September/October 2016 - 15
Paper360 - September/October 2016 - 16
Paper360 - September/October 2016 - 17
Paper360 - September/October 2016 - 18
Paper360 - September/October 2016 - 19
Paper360 - September/October 2016 - RBI: Transforming to Meet the Industry’s Research Needs
Paper360 - September/October 2016 - 21
Paper360 - September/October 2016 - 22
Paper360 - September/October 2016 - 23
Paper360 - September/October 2016 - Paper Schools: Forging the Future
Paper360 - September/October 2016 - 25
Paper360 - September/October 2016 - 26
Paper360 - September/October 2016 - 27
Paper360 - September/October 2016 - 28
Paper360 - September/October 2016 - PPI Top 100
Paper360 - September/October 2016 - 30
Paper360 - September/October 2016 - 31
Paper360 - September/October 2016 - 32
Paper360 - September/October 2016 - 33
Paper360 - September/October 2016 - 34
Paper360 - September/October 2016 - 35
Paper360 - September/October 2016 - 36
Paper360 - September/October 2016 - 37
Paper360 - September/October 2016 - RISI’s Latin American CEO of the Year
Paper360 - September/October 2016 - 39
Paper360 - September/October 2016 - 40
Paper360 - September/October 2016 - 41
Paper360 - September/October 2016 - 42
Paper360 - September/October 2016 - 43
Paper360 - September/October 2016 - 44
Paper360 - September/October 2016 - 45
Paper360 - September/October 2016 - Automation Upgrade Helps Sappi Gratkorn Perform
Paper360 - September/October 2016 - 47
Paper360 - September/October 2016 - 48
Paper360 - September/October 2016 - 49
Paper360 - September/October 2016 - Innovative Direct Drive in a Turnkey-rebuilt Project
Paper360 - September/October 2016 - 51
Paper360 - September/October 2016 - 52
Paper360 - September/October 2016 - 53
Paper360 - September/October 2016 - Klingele Papierwerke Saves Money, ‘Foils’ Stickies
Paper360 - September/October 2016 - 55
Paper360 - September/October 2016 - 56
Paper360 - September/October 2016 - 57
Paper360 - September/October 2016 - TAPPI Journal Summaries
Paper360 - September/October 2016 - 59
Paper360 - September/October 2016 - 60
Paper360 - September/October 2016 - 61
Paper360 - September/October 2016 - Life Cycle of the US Paper Industry
Paper360 - September/October 2016 - 63
Paper360 - September/October 2016 - 64
Paper360 - September/October 2016 - 65
Paper360 - September/October 2016 - TAPPI News
Paper360 - September/October 2016 - 67
Paper360 - September/October 2016 - ASPI News
Paper360 - September/October 2016 - 69
Paper360 - September/October 2016 - Index of Advertisers
Paper360 - September/October 2016 - cover3
Paper360 - September/October 2016 - cover4
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