Filters
The screening process, troubleshooting, warning signs and coating
Once a screen cylinder's holes plug or its raised plating or coating is worn smooth, a host of operational problems can occur affecting runnability, capacity, pulp quality and cylinder life. There are three warning signs of excessive wear to monitor.
Insights ● Article
Optimize doctoring performance and lower total cost of ownership
Every doctoring process can be improved. The usual investments required are minimal. Optimizing your doctoring processes results in better runnability, improved quality, optimal production efficiency, reduced maintenance costs and improved safety and environmental effect.
Insights ● Article
Safety improvements at the reel and winder (webinar)
Valmet experts discuss safety standards relating to reels and winders, and what can be done to improve operator and equipment safety with today's technology.
Insights ● Article
Helpful coating tips: jet angle, gap, critical factors, etc.
Factors that increase coat weight: decrease of blade load, decrease tip angle, increased viscosity/solids, increase speeds & increase in sheet roughness.
Insights ● Article
Helpful tips on retention chemistry, coagulants, starch, etc.
Most microparticle systems are based on anionic products, silica, micropolymers and bentonite. Retention aid systems involve coagulants, macroflocculants and microflocculants.
Insights ● Article
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.
Insights ● Article
Presentations from Valmet Technology Webinar at PaperCon 2017
Paper- and board-makers are invited to a free technology webinar on Monday, May 24. As part of Valmet's activities at PaperCon 2017, we will broadcast our Technology Seminar via a webinar. Valmet experts will be on hand for in-person and virtual Q&A after the webinar.
Insights ● Article
Air Dryer Nozzle Upgrade saves energy at Ishinomaki, case study
In addition to reducing related energy consumption by ~20%, the new PowerFloat Plus air dryer nozzles improved drying capacity and sheet runnability at Nippon Paper's Ishinomaki mill.
Insights ● Article
High quality Valmet Filter Bags improve power plant filtration
Valmet Filter Bags provide superior performance and durability in demanding baghouse conditions.
Insights ● Article
Enhanced steaming provides better chip impregnation, case study
When entering the chip bin, about one third of a chip's volume is air. In order for the white liquor to impregnate fast and evenly, the chips must be well steamed and the air content as low as possible.
Insights ● Article
