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Melbourne, Australia

Launonen U.,UJL Pty Ltd. | Sundvall O.,PulpEye AB
Fibre Value Chain Conference and Expo 2014: Pulp and Paper Bioenergy Bioproducts | Year: 2014

Modern pulp analysers offer the following benefits: Quick and reliable test results. Easy to use interface. Easy to reach data. Low maintenance - few moving parts. Flexible and modular design. Helps reduce mill energy costs. Helps reduce web breaks. Provides better understanding of fibre properties and different fibre distribution. Source

The cross direction (CD) moisture profile on a machine is often the product of poor pocket ventilation and a differential drying rate across the machine width. This paper looks at the physics of drying and optimising the performance of the dryer section using a combination of advanced pocket ventilation and energy efficient short wave infrared drying. Source

Komulainen P.,ACA Systems Oy | Mustalahti H.,ACA Systems Oy | Karinen K.,ACA Systems Oy | Launonen U.,UJL Pty Ltd.
Appita Annual Conference | Year: 2011

Dusting is a common problem in papermaking, printing and paper converting. Specifically in offset printing, linting has become a growing problem, when more low cost materials and higher printing speeds are being used. Today, papermakers try to use more filler pigments because the filler price can be only 20-40% of fibre price. Unfortunately, fillers are not bound to fibres and they also prevent bonding between fibres, resulting in reduced strength and linting. Most paper machines produce a two-sided filler distribution and two-sided fibre bonding. The side with less bonding has normally a higher linting propensity the same way as the side with higher filler content. Wire section has greatest effect on filler two-sidedness and press section on bonding two-sidedness. It is clear that there can be quite fast variations in filler content and its two-sidedness as well as in fibre bonding and its two-sidedness. Especially when using recycled fibres, there are variations and they can be fast. Also changes in broke amount and recycled stock from saveall have an effect on linting propensity. Traditionally linting propensity has been measured in the laboratory. The delay time from process change to the result of laboratory measurement is at least one hour, normally much more. In addition, the laboratory sample represents a very small part of the total paper, while true linting in offset printing tests 100% of the paper surface. Consequently, the laboratory testing is not a satisfactory measurement. Linting is a cumulative process and very short high linting periods can cause severe problems in printing. ACA Systems Oy has developed a new linting propensity analyser (LPA), which is used online on a paper machine. Results can be read after some minutes depending on the severity of the problem. Source

Launonen U.,UJL Pty Ltd.
Appita Annual Conference | Year: 2013

There are modern biomass moisture analysers available measuring moisture content reliably and accurately. These BAM and NIR analysers have modern measurement methods suitable for the most biomass production and testing requirements. They are suitable for field, transport, and quality testing and biomass production plants. The following criteria could be beneficial when choosing the analyser for biomass 1. Accuracy 2. Measurement speed and sample size 3. Reliability 4. Fairer trading with biomass manufacturers 5. Safe use and operation 6. Capital investment cost or trialling and renting? 7. Remote support and diagnostics 8. Reduced labour 9. Closed loop moisture control loop for material and energy savings A suitable model of a biomass moisture analyser could be proposed by the suppliers, who can also test biomass samples in their factory. Source

Launonen U.,UJL Pty Ltd. | Akerberg I.,Procemex Oy
Appita Annual Conference | Year: 2013

Above presentation shows some features and tools for modern machine vision systems used in paper, pulp and printing plants. Modern technology with high speed HD cameras and high speed capturing and analysing technology can and will be used in these plants more in the future, especially inside the machines where the conventional camera systems cannot work reliably. These systems will save operator time at the production plant in troubleshooting reasons for paper machine web breaks, disturbances and web defects. The latest and modern machine vision tools are helping paper mill operators and management to quickly address issues and problems related to paper web breaks, events or paper defects. They are also becoming useful for paper quality and sales personnel. Opportunities for using modern machine vision systems are increasing, as is the number of cameras actually being used. The payback time or ROI of these systems could be only a few months as the machine vision system can help improve saleable production. Modern vision technology will bring more new and exciting machine vision and product quality monitoring applications in coming years - especially as the technology is now ready and available for paper, pulp and printing plant operators. The vision systems will record, store, analyse, alarm and display the relevant information, allowing for easier and quicker decision-making for operators. Source

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