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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.

Solving wound roll interleaving on an older winder, a case study

Winder sets with a high number of rolls would interleave and wrinkle on the drive side. Calling in an OEM field service expert was a cost-effective solution.

Optimize paper machine drying energy with Valmet XT Control

Drying accounts for 80% of thermal energy costs. Optimization of the paper machine hood and air systems with the XT Control system can significantly reduce these costs.

Improve recovery boiler safety with a fixed annual price agreement

A fixed price agreement improves personnel safety and boiler performance. Valmet supplies new liquor sprayer stations and maintains them in new condition.

Improve profitability and efficiency with a Performance Agreement

Valmet’s Performance Agreement is a mill-wide development program to improve and maintain your competitiveness and profitability throughout the mill lifecycle.