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Avoiding roll defects at the winder - causes and solutions
Most roll structural defects are caused by poor nip or tension. These tips will help operators avoid starring, soft starts, corrugations and crepe wrinkles.
Calender case study - CD caliper control & sheet breaks
A southern USA mill requested Valmet expert assistance, specifically a process and condition audit of their online single nip calender.
Valmet and Flootech taking the lead in water treatment solutions
Hear from Patrik Rehn, Sales Manager at Flootech, about insights on the current water situation, the needs of customers, and the direction the tissue industry should take moving forward with advanced water treatment solutions.
Cartiere del Garda: Powerful results in a beautiful location
Mill Production Manager Antonio Di Blas says: “We got it all - 50% gas savings, better paper quality, better working conditions, better availability, and smaller maintenance costs.”
The world of Finance – Summer at the Finance department
This summer I work as a finance trainee in Valmet’s Finance department. Finance department consists of several teams - for example, one team is responsible for business analyzes and reporting to management and another team is responsible for group reporting and accounting legislation implementation.
Wood-based fiber - new opportunities
The growing demand for sustainable materials in packaging as well as in textile materials calls for new innovations in wood-based fiber products. Listen in and be updated on wood-based fiber product innovations and achieving sustainability targets.
Use these general instructions to replace a hydraulic cylinder
This article contains general replacement instructions for hydraulic cylinders. In the absence of specific OEM or mill instructions, follow these instructions which include safety, preparation, cylinder removal/installation and completing actions.
Winder safety - releasing from a nip with a lifting cushion
Each mill must have a rescue plan and rescue apparatus for accidents. The following information is aimed at the winder users to help them when developing a rescue plan for accidents that are caused by the pulling winder nip.
Hydraulic power unit troubleshooting - symptoms, causes and fixes
Troubleshooting HPUs is easier when you evaluate the symptoms to determine root causes. These troubleshooting charts will help diagnose problems related to pumps, leaks, pressure, noise and heat.
Winding principles part 3 - drum torque control methods, summary
When web tension and drum nip pressure are constant, drum torque will assure uniform or diminishing roll hardness from the core toward the outside of the rolls.
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