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Reeling parameters - tension, nip load and peripheral force

The three critical parameters which must be controlled to make a well structured parent roll that can handle further processing are determined case-by-case.

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.

Valmet iRoll Portable Press Analysis at Cartiere del Garda

Cartiere del Garda used Valmet iRoll Portable Press Analysis to resolve problems with moisture profiles, felt lifetimes and more.

SymSizer/OptiSizer beam setup, after applicator roll change

SymSizer or OptiSizer beam setup is required after every applicator roll change or whenever you feel there is an issue with starch/coating application. The goal is to set the applicator beam parallel with the new applicator roll.

Steam & condensate 1 - overview, glossary and water evaporation

In this first in a two part series, We explain the terminology and working principles of a typical S&C system and how it controls steam pressure for optimum drying over the entire operating range.

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.

The mechanics, factors and prevention of size press orange peel

A common problem on film metering size presses is orange peel. Orange peel is caused when the coating film splits away from the coated sheet in the immobilized coating layer at the exit of the size press nip.

Web shifting - base paper, misalignment, free span and process

Web shifting can be caused by the paper or by something mechanically wrong in the web path. This article presents typical causes of sheet shifting. Most have to do with alignments, but base paper, drying and coating also have great impact.

Improving reel turnups for low downtime and high paper yield

The reel turnup process must be perfect in order to maintain high quality end product and avoid downtime. Successful turnups share key aspects, while others may benefit from a technology upgrade.

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.