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Explanation of size press edge wipe operation and proper setup

Improper setup of the edge wipe when running starch means poor doctoring results outside the sheet path. Extension past the holder is a critical part of setup.

Proper coater blade angle measurement, interpretation and setup

Measuring and interpreting coater blade wear angle can avoid problems such as scratching, poor coat weight appearance, wet bleeding and weeping at the blade tip. Correct positioning of the blade on its bevel will optimize sheet smoothness.

Understanding coater blade angle vs. loading tube pressure

For a given blade tip bevel, when load tube pressure is increased, the blade angle will decrease, resulting in the blade running on its heel for a while. This, along with the additional bending pressure at the blade tip, will reduce coat weight. It is important to understand the interaction between blade angle, blade tip angle and loading tube pressure.

Safety when lifting, operating and servicing felt rolls

When lifting, operating and servicing the rolls, obey the OEM and mill safety instructions regarding lifting points, nips, lifting instruments and guards in order to maximize occupational safety.

Spreader rolls - principle, problems, solutions and services

Spreaders deal with web instability, using the principles of tension and traction to overcome dishing and interweaving. Valmet spreader roll services ensure spreading efficiency with all-round cost control.

Field Report - Slitter blade and band sharpening

Slitters must be sharp and properly sharpened. The best way to maintain a continual supply of sharp slitter blades is to use the Valmet BladePool service. If, however, you choose to do your own sharpening, here are some general instructions for sharpening at the mill.

Improving extended nip press (ENP) performance and blanket life

Since 1980 the Extended Nip Press (ENP) has performed well. But there have been improvements since its initial entry in the market. These include prolonging the blanket/belt and felt life and improving sheet properties with oil lubrication showers, belt brushes, belt wipes, loading piston upgrades and geometry optimizations.

Introduction to the tail threading process, efficiency and audits

If you can't thread the machine, production stops. Depending on the automation level of your machine, threading can be a safety issue. Achieving and maintaining tail threading efficiency is thus exceedingly important for safety and bottom line performance on machines making any grade of paper, board, pulp or tissue.

Supercalender process conditions, variables and grinding

Process variables affecting SC paper production, process conditions affecting supercalender polymer roll life and calender roll grinding recommendations.

Larger jumbo rolls increase pressroom breaks, a case study

Larger wound roll sizes dramatically increased press breaks for an LWC mill's customer. Process analysis and Valmet small fixes provided a temporary solution.