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Up & Running articles

Up & Running articles

10 of 251 documents
  • Dec 10, 2019

    Field Report - Reel process audits

    Reel equipment can take a beating during normal operation. Periodic inspections of the reel equipment are recommended to develop a baseline with regard to its process variables and mechanical condition.

  • Dec 3, 2019

    Field Report - Retention aid induced press failure, a case study

    Papermaking is as much a chemical process as it is a mechanical one. A fine paper machine lost retention aid flow when the pump shut down. The resulting imbalance caused a press wreck when the pump was restarted. Multiple lessons were learned.

  • Nov 26, 2019

    Field Report - Size press edge wipe setup

    Improper setup of a size press edge wipe when running starch results in poor doctoring results outside the sheet path. The extension of the wipe past the holder is a critical part of the edge wipe setup.

  • Nov 19, 2019

    Field Report - Measuring applied and residual coat weight on applicator rolls

    Starch and coating is applied to the applicator roll using a rotating rod. The amount of coating applied to the roll is the most important variable for good coat weight control. This article describes a method of measuring the wet film on the fly across the size press, using a simple measurement tool.

  • Nov 12, 2019

    Field Report - Saturated steam table & tips

    At the end of this article is a typical enthalpy table for saturated steam. You can use this type of chart to determine what the temperature is inside a dryer can at a given pressure. We also provide some tips for sizing lines, measuring temperature and monitoring condensate pressure.

  • Nov 5, 2019

    Field Report - Dryer steam and condensate system tips

    The purpose of a paper machine steam and condensate system is to control steam pressures for optimum drying, provide stable control over the entire operating range and efficiently remove condensate from inside the dryers. This article presents tips for maintaining performance with your S&C systems.

  • Oct 29, 2019

    Valmet Tissue Technology Webinar - learn from the technology leader

    Valmet's free webinar is an information packed hour of presentations and Q&A that will bring you up to date on the latest in tissue making technology, from the headbox to the rereeler, including automation that assists operators in making the best decisions.

  • Oct 22, 2019

    Field Report - Controlling coater blade beam deflection

    Coater beams deflect due to coating temperatures, paper temperatures and the temperature of the environment. Newer and wider coating machines are equipped with beam heating/cooling chambers that can be controlled to maintain a straight beam and hence better coat weight profiles.

  • Oct 15, 2019

    Field Report - Yankee rebuild improves tissue quality, a case study

    Rebuilding a Yankee is a daunting decision, due to OSHA regulations for confined space entry and the significant cost of downtime. This mill was losing product due to poor tissue quality, and Valmet's service engineers assisted in the decision making process to rebuild the Yankee.

  • Oct 8, 2019

    Field Report - Roll grinding procedures

    Successful roll grinding depends on many factors. The knowledge and experience of an operator, the condition of the roll grinding equipment, and continued preventive maintenance of equipment, all contribute to the ability to meet dimensional tolerances and surface finish requirements.

Up & Running articles

10 of 251 documents