TAPPI T551 om-06 Thickness of paper and paperboard

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1、T551om-06PROVISIONALMETHOD–1992OFFICIALMETHOD–1998REVISED–2006©2006TAPPITheinformationanddatacontainedinthisdocumentwerepreparedbyatechnicalcommitteeoftheAssociation.ThecommitteeandtheAssociationassumenoliabilityorresponsibilityinconnectionwiththeuse

2、ofsuchinformationordata,includingbutnotlimitedtoanyliabilityunderpatent,copyright,ortradesecretlaws.Theuserisresponsiblefordeterminingthatthisdocumentisthemostrecenteditionpublished.CAUTION:ThisTestMethodmayincludesafetyprecautionswhicharebelievedtob

3、eappropriateatthetimeofpublicationofthemethod.Theintentoftheseistoalerttheuserofthemethodtosafetyissuesrelatedtosuchuse.Theuserisresponsiblefordeterminingthatthesafetyprecautionsarecompleteandareappropriatetotheiruseofthemethod,andforensuringthatsuit

4、ablesafetypracticeshavenotchangedsincepublicationofthemethod.Thismethodmayrequiretheuse,disposal,orboth,ofchemicalswhichmaypresentserioushealthhazardstohumans.ProceduresforthehandlingofsuchsubstancesaresetforthonMaterialSafetyDataSheetswhichmustbedev

5、elopedbyallmanufacturersandimportersofpotentiallyhazardouschemicalsandmaintainedbyalldistributorsofpotentiallyhazardouschemicals.Priortotheuseofthismethod,theusermustdeterminewhetheranyofthechemicalstobeusedordisposedofarepotentiallyhazardousand,ifso

6、,mustfollowstrictlytheproceduresspecifiedbyboththemanufacturer,aswellaslocal,state,andfederalauthoritiesforsafeuseanddisposalofthesechemicals.Thicknessofpaperandpaperboard(softplatenmethod)1.Scope1.1Thismethoddescribesaprocedureformeasuringthethickne

7、ssofasinglesheetofpaperorpaperboardusingsoftsyntheticrubberplatensagainstthepapertominimizetheeffectofsurfaceroughness.ThismethodisnottobeconfusedwithnorsubstitutedforTAPPIT411“Thickness(Caliper)ofPaperandPaperboardandCombinedBoard.”Itistobeusedprima

8、rilyforsheetdensitycalculations.Becauseoftherelativelyhighpressure(50kPa),thismethodmaynotbesuitableformeasurementoftissueorothersoftorlowdensitymaterials,becausethestructuremaycollapseattheprescribedpressureof50kPa(7.2psi).1.2Othermethodswhichyields