Zenix™ dryer section passivation technology
Zenix dryer section passivation technology combines chemistry, equipment and application expertise to significantly reduce deposition and linting in the dryer section of a paper machine. Similar to a non-stick cooking spray that is used to prevent food from sticking to a frying pan, this exclusive technology employs the continuous application of passivation chemistry directly onto either dryer cylinders or dryer fabrics to prevent contaminants from adhering to these surfaces.
When applied to dryer cylinders or dryer fabrics, the passivation chemistry forms a protective coating on the treated surface. This coating reduces the surface energy of the treated surface, which reduces the tendency for deposition and improves the release of the sheet. Additionally, the passivation chemistry provides lubrication at the dryer cylinder/doctor blade interface, which reduces wear of the dryer cylinder surface. With less wear, the dryer cylinder surface remains smooth and is less likely to cause picking.
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Product Availability
- Europe, Middle East, Africa, India
- North America
Application InformationWant to know more about how our products are used?
Zenix dryer section passivation technology significantly reduces deposition and linting in the dryer section of a paper machine. Commercial applications confirm this and typically result in a number of value-added benefits.
● Reduced deposition and linting
● Improved heat transfer
● Improved productivity
● Reduced downtime
● Improved moisture profile
● Improved sheet smoothness
● Reduced steam consumption
● Reduced doctor blade wear
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ServicesAshland offers a variety of services which complement this product.
Customer Analytical Services
Ashland Water Technologies’ Customer Analytical Services team is dedicated to helping customers address the multitude of contaminants that can negatively impact the efficiency and reliability of their water-based systems. The team is made up of an experienced staff of analytical chemists, microbiologists and technicians and is supported by sophisticated testing equipment that provides rapid analysis and identification of contaminants beyond what may be accomplished with field-based methods. Key services provided by the team include fluid analysis, deposit analysis, microbiological analysis and metallurgical analysis.
Papermaking Services
Continuous pilot papermaking systems are the cornerstones of Ashland Water Technologies’ Papermaking Services group. The primary purpose of our papermaking operations is to provide papermakers with insights and solutions to problems and opportunities related to the effects of additives and system changes on wet-laid products and processes. Our facilities are equipped to conduct trials that predict commercial system performance.
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Method of Application
The passivation chemistry is continuously applied to the surface of either a dryer cylinder or a dryer fabric. If deposits form on dryer cylinders, then the passivation chemistry is applied to the surface of a dryer cylinder using a traversing nozzle. If deposits form on the dryer fabrics, then the passivation chemistry is applied either directly to the surface of a dryer fabric or to a paper side roll using a traversing nozzle.
With dryer cylinder applications, the passivation chemistry is normally applied to the first dryer cylinder that contacts the top side of the sheet and the first dryer cylinder that contacts the bottom side of the sheet. Using these feed points, the passivation chemistry transfers via the sheet to several of the down-machine dryer cylinders. This is referred to as the "replication effect." Dryer fabrics can be treated directly or via a paper side roll. The illustration below shows the typical dryer cylinder and dryer fabric application points.
Typical dryer cylinder and dryer fabric application points.