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The Kadant Blog

Doctoring, Cleaning, Filtration


Keys for Choosing a Fabric or Roll Cleaning Supplier

Although there are many criteria to consider when selecting a supplier of traversing showers for fabric or roll cleaning equipment, the most important is to choose a system that delivers the desired results, which in most cases includes improved runnability and increased productivity.

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A Filtration System Design By and For Papermakers

Pressure filters are used extensively in the papermaking process and often go unnoticed as they effortlessly operate in stable mill water systems. They quietly perform as designed preventing shower nozzles from plugging and assuring that paper machine clothing remains clean. Pressure filters protect process equipment by removing contaminants such as sand and silt from mill water.

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Advances in Press Roll Dewatering

Blind drilled, grooved, and suction drilled rolls are commonly used on presses in the papermaking process. The open areas in these rolls are designed to accept water from the fabric. It is important all the water in these rolls be evacuated before the nip to prevent re-wetting the sheet and to ensure optimum press nip performance. In some cases these rolls rely solely on centrifugal force to evacuate water, but this is often not sufficient, especially when the fabric becomes filled and cannot accept as much water.

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High Resolution™ Forming System for Packaging Grades of Paper

For years, papermakers have looked for the best combination of drainage and formation in the early section of fourdrinier paper machines. The ability to maximize drainage without sealing the sheet and to control sheet activity over a wide range of basis weights have been challenges with increasing machine speeds and customer quality demands.

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How to Choose a Roll Cleaning Blade

Doctor blade? Roll cleaning blade? Scraper? The term is used differently depending on the industry but the product’s purpose is the same–to clean or remove contaminants from a cylindrical surface.

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White Water Recovery – the Benefits Go Beyond Just Saving Water

Corporate sustainability statements often emphasize water reduction as a goal associated with minimizing a company’s environmental footprint and impact on the community. Being a “good neighbor” by optimizing the use of water and reducing water costs are the two most obvious benefits.

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Can Filtration Equipment Cost-effectively Reclaim White Water in Systems With a Variability in Solids?

Selecting filtration equipment that performs efficiently under the dynamic process conditions of paper machine white water loops can be a challenge for many papermakers. Variability in furnish, paper grades and the operating conditions of the machine, can lead to large swings in the type and amount of solids that must be removed from the white water before it can be reused in the process.

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