20 Dec Pressing out problems
After treated paper pulp is pressed into long sheets, it is fed through large steam-heated dryer cylinders, removing any excess water and bonding the fibres into a more stable structure. According to Nitin Verma, Industrial Business Development Manager at NSK Australia, the key challenge with this process arises when trying to maintain uniformity of thickness across each sheet.
“Because the machinery structures are so large, the load on each bearing is extremely high,” he says. “The paper needs to lie flat from end to end between the rollers, but it can sometimes buckle in the middle, creating a variance in thickness in different areas of the sheet.”
“We combat this by fitting the machines with our tailored NSK Spherical Roller Bearings that are known for their ‘triple ring’ design that is specialised for the pulp and paper making industry,” explains Nitin.
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