Pulp Paper & Logistics


PRODUCTS & SERVICES 19


Tensile testing from tissue to the strongest board


tensile tester. The tester measures, to established paper testing standards, properties such as tensile strength, stretch at break, TEA and tensile stiffness. In addition, eight other industry


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standard properties can be calculated and reported. It is said to be sensitive and precise enough to measure tissue, and strong enough to measure packaging board.


Designed with attention to


ergonomics and efficiency, it uses a large table area that makes it easy to manage test- pieces; the start button is placed


orentzen & Wettre, part of the ABB Group, has launched its fourth- generation horizontal


predict fracture strength and fracture strain for a two metre long and one metre wide paper web with a 10 millimetre edge cut, only by measuring on small standard test-pieces. This large paper geometry can be used for predicting and ranking of the fracture properties of paper materials. “With the L&W Tensile Tester


near the test-piece input, and the easy-to-use colour touch- screen has intuitive and easy accessible menus and buttons. The instrument has a well-proven clamp design – recommended by the ISO and TAPPI standards –


with a cylindrical clamp holding the test-piece in place, and guides on each clamp that ensure the alignment of the test-piece. The clamps are also backlash-free, for precision measurements. The L&W Tensile Tester can


we have made traditional quality testing very easy, but still with high precision and trust in result,” said Thomas Fürst, product manager at Lorentzen & Wettre. More information from AB


Lorentzen & Wettre, Box 4, SE 164 93 Kista, Sweden. Tel: 46 8 477 90 00. Fax: 46 8 477 91 99. Web: www.lorentzen-wettre.com


Sealed bearings reduce maintenance in sludge press


A paper recycling firm is benefiting from four-times better bearing life and avoiding the costs of a regular partial shutdown, following the adoption of a new bearing design developed by NSK for a sludge press.


Bearings in a sludge press were


suffering from contamination. The conditions in the press were harsh: wet and dirty, resulting from water and pulp containing with printing inks and other substances. It meant that the machines had to be shut down every six months to replace the bearings.


The solution required a


sealed rollers (SLE series). After the customer had accepted


complete analysis and report of the operation of the bearings on the sludge press, services that NSK routinely performs across many market sectors as part of its asset improvement programme (AIP).


Following an extensive inspection of the paper recycling site and the sludge bearing housings, NSK proposed improving the quality of the bearing seals by using self- aligning roller bearings with


this recommendation, NSK first modified the bearing housings and then assisted with the installation of two test systems. The results were impressive: the service life of the bearings was improved to more than two years and additional savings were made in lubrication: both in quantity of lubricant used, and also the longer maintenance intervals. More information from NSK


UK Ltd, Northern Road, Newark, Nottinghamshire NG24 2JF, UK. Tel: 44 500 2327464. Fax: 44 1636 643075. Web: www.nskeurope. com


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