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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.
Headbox apron shower troubleshooting variables, and a case study
The key word in papermaking is uniformity, and the apron shower plays a primary role in maintaining this characteristic. Shower water volume, pressure and temperature are critical factors. The case study involves the three indicators of a thermal bow problem in the apron lip.
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.
Valmet tissue machine roll covers achieve significant benefits
Valmet’s new polyurethane cover materials extend running periods and reduce maintenance and energy costs on tissue machines.
Trim ribbon conveying for a more efficient and safer process
Ventilation equipment is needed at the winder or reel for several different purposes: dust removal, humidification, trim conveying and broke conveying. This article deals with trim ribbon conveying.
Using iRoll for sheet/roll temperature monitoring, case studies
Valmet iRoll Temperature is an online tool for measuring the temperature profiles of rolls, roll covers and paper webs. These three case studies describe how iRoll technology has helped mills reduce roll cover wear, eliminate cover failure and improve profiles and runnability.
Sizing success with Nelprof – unlocking butterfly valve potential
Valve sizing is a critical step for achieving precise, reliable and stable flow control as well as improved process performance, especially when using Valmet’s butterfly valves in demanding control applications. Butterfly valves are valued for their compact design and versatility, but their performance depends heavily on correct sizing and selection. This is where Valmet’s valve sizing and selection software, Nelprof™, makes a real difference.
Finland
The Jyväskylä Service Center is the most comprehensive modern service center in Europe, serving customers throughout the world. The center opened in 1989. We offer pulp and paper customers the latest roll technology and a wide range of maintenance expertise.
Valmet Service Center in Sundsvall, Sweden
Established in 1984 in Sundsbruk, just outside Sundsvall, our service workshop proudly supports the pulp and paper industries. We offer a comprehensive range of services, including the reconditioning and maintenance of fiber line equipment, technical support, spare parts, service agreements, equipment modifications, and daily maintenance services.
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