b'be necessary in order to meet the required stretch and bulk targets. Maximizing the uniformity of the sheet adhesion to the Yankee, in order to create internal stretch via an exploded and delaminated base sheet, will allow for lower crepe ratios to be employed.COMMON MISCONCEPTIONSWhen trying to optimize the creping process for increased bulk to basisFigure 8. Cotton ball representation of an exploded, delaminated base sheet.weight, there are several common misconceptions that plague a largecreping should include a plan forcapabilities now allow for much better portion of tissue makers: ensuring the correct adhesive hasprediction of the type of chemistry Blade pressure been specified for the purpose. required at nonstandard creping Many tissue makers misunderstandmoistures.the purpose of blade pressureSUMMARYAdjustment of the creping processREFERENCESwith respect to managing sheet1. Defining the physical characteristics quality.It should go without sayingin order to maximize bulk to basis weight presents tissue makers withthat cause tissue softness. Tissue World that blade pressure is irrelevant toMagazine, Sept./Oct. 2014. John Stitt and the sheet itself.Blade pressure isan excellent opportunity for improvedHolly Richardson.dependent mostly on the Yankeequality and process efficiency. 2. Measurement of tissue paper coating adhesive package propertiesWhen a clear understanding of thesoftness: A literature review. Nordic that are being used on the individualdesired end-product goals has beenPulp and Paper Research Journal machine.On modern high-speedestablished between marketing,19(3):345-353January 2004. Hallmark & tissue machines, blade pressure isproduction and the creping packageAmpulski.predicated on the pressure requiredsupplier, creping mechanics can be3. Relationship between Human for the blade to penetrate the organicoptimized to provide the specificationsperception of Softness and Instrument coating, getting under the sheet, butin the most cost-effective manner. Measurements. BioResources 14(1), 780-not passing all the way through to the795. Wang et al (2019)surface of the Yankee. As creping is the main driver of bulk4. The Basics of Creping in the generation, the setup of the threeTissuemaking Process. Tissuestory.com, Yankee coating main levers of the creping process,Ian PadleyA Yankee coating adhesive packagenamely the geometry, creping5. Better Bond, Softer Tissue. Tissue that is optimized and works great atmoisture and crepe ratio, must beWorld Magazine, Feb.-Mar. 2003. John 5% creping moisture is unlikely toundertaken to achieve the productStitt.function well at the sort of increasedcrepingspecifications by extracting maximum6. Simulation of creping pattern surface temperatures that willmechanicsvalue from the creping process. Thisin tissue paper. Nordic Pulp & Paper result if the tissue maker pursuescan beis generally well understood by tissueResearch Journal, Volume 27, Issue 2, creping moistures of 3.0% or loweroptimized tomanufacturers, but results are oftenPages 375381. Raunio and Ritalato increase bulk. As explainedprovide thenot achieved as expected due to not7. The Science of Creping. Tissue World above, different Yankee coatingspecificationshaving the correct Yankee coatingAmericas conference proceedings 2004. adhesives develop different filmin the mostadhesive package in place for the newDr. Wes McConnellproperties at different temperatures. cost-effectiveoperating conditions desired.Modern8. Douty, D.E (1910) Bursting The transition to the lower moisturemanner. laboratory film and materials testingstrength. trade journal J.50(6):271-276TISSUE TECHNOLOGY INTERNATIONAL27'