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Table of ream sizes for common paper, board and tissue grades

This table lists ream sizes by paper grade including lbs/ream to grams/square meter conversion factors.

Calender safety - Handling calender rolls and parent rolls

Due to the weight and overall size of calender rolls, reel spools, and paper rolls, handling accidents can cause serious injury or death to personnel, and costly repairs to the roll, spool, or other equipment. However, handling accidents can be avoided if basic safety rules are followed.

Sizer applicator beam not unloading at sheet break, a case study

When a sizer applicator beam refuses to unload properly, it presents a personnel and equipment safety risk. This case study follows the diagnosis and ultimate identification of the problem - at the TS cylinder rod end packing assembly.

Sources and solutions for several common doctoring problems

One of the main causes for doctoring problems is the loading tube, which may be kinked, leaking or incorrectly pressurized. Additionally, there are a number of failure points such as pivot brackets, pivot rods, blade wear and sequencing.

Troubleshooting roll bouncing addresses the four probable causes

Roll vibration can intensify enough to actually bounce the rolls, causing an unsafe situation at the winder. The most common causes are mechanical hardware, controls, roll structure and paper properties. Thorough troubleshooting is the best recommendation.

Common fluids valves explained: Cartridge pressure relief valve

Pressure relief valves are used to prevent over pressurization in the hydraulic circuit. They are located close to the pumps and reservoir tank or close to the equipment to safeguard from over pressurization.

Avoid common workplace injuries by using safe material handling

Most workplace injuries (almost 60%) are the result of common, everyday missteps such as overexertion and slips/trips/falls - not from violent events.

Troubleshooting headbox corrosion, plus an analysis case study

Imperfections in a headbox's finish interfere with fiber flow through its chambers, resulting in sheet uniformity problems and a poor end product. A process and condition test can identify problems caused by corrosion, fiber orientation and machine limitations.

Reviewing Yankee dryer condition and performance with inspections

The Yankee dryer is one of the most essential parts of the tissue machine. This pressure vessel serves as a base for creping, pressing and drying of the paper sheet. Condition and performance of the Yankee should be monitored regularly.

Suction roll bearing failure - monitoring and lubrication tips

One of the most sensitive components of the roll, the internal bearing is difficult to maintain and unforgiving when it fails. Accelerometers are an effective means of monitoring and predicting suction roll bearing failure.