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Five checks at shutdown when inspecting rubber covered rolls

At a shutdown, to determine if the cover should be taken out of service for either regrind or recover, inspect the cover for these five issues.

Conversion projects open the door to new opportunities

Rather than permanently idling a paper machine, why not move into a growing market such as packaging?

Reeling terminology and how to achieve proper roll structure

Proper roll structure requires carefully controlled winding, to enable the resulting parent reel to be stored and unwound in downstream processes in a trouble-free manner. This article presents a glossary of terms and description of roll structure.

Safety, operation and maintenance of water jet tail cutter

Beloit's original Water Jet Tail Clip was a hardworking tail cutter and its operation, maintenance and safety considerations are reviewed in this article.

Reducing coater variability with a coater beam replacement

Many existing coating station blade beams experience MD and CD coat weight variability due to a variety of factors. Replacing the blade beam with a Valmet OptiCoat beam reduces variability and improves end product quality.

Achieving boiler MACT (Maximum Achievable Control Technology)

The primary goal of a boiler tune-up is to improve efficiency with respect to combustion operations by re-establishing the air-fuel mixture for the operating range of the boiler and balance oxygen and unburned fuel.

Niploading of SymSizers - problems, corrections and maintenance

Nip loading varies based on the type of size / coating applied, the roll crowns and the incoming sheet. Wrinkles, skewing and e-nip profiles are important.

Coater backing roll showers - purpose, layout and setup

Showers on the coater backing roll lubricate, cool and prevent coating buildup. This extends roll lifetime and can reduce coater-related sheet breaks.

The mechanism, need for and effect of reel drum grooving

As machine speed increases and sheet porosity decreases grooving of the reel drum becomes necessary in order to avoid sheet wrinkles, sheet breaks and quality defects.

Dryer can warm-up / cooldown guidelines and typical procedure

The purpose of dryer can warm-up/cooldown procedures is to permit uniform expansion or contraction of all components of the dryer system in order to minimize thermal stresses in the equipment.