ASTM_D_6148_-_97_2007.pdf

Designation:D6148 97(Reapproved 2007)An American National StandardStandard Practice forSeparation and Examination of Stickies1This standard is issued under the fixed designation D6148;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This practice is applicable to a wide range of virginpulps or pulps derived from recovered materials or recoveredpaper of the type typically used to produce paper,paperboardand other paper products.1.2 This practice describes laboratory procedures wherebystickies are typically separated from pulp fibers,and then theseparated stickies fraction is examined by qualitative or quan-titative procedures,or both.1.3 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D585 Practice for Sampling and Accepting a Single Lot ofPaper,Paperboard,Fiberboard,and Related ProductD1968 Terminology Relating to Paper and Paper ProductsD2019 Test Method for Dirt in Paper and PaperboardE122 Practice for Calculating Sample Size to Estimate,With Specified Precision,the Average for a Characteristicof a Lot or Process2.2TAPPI Documents3T 205 Forming Handsheets for Physical Testing of PulpT 210 Sampling and Testing Wood Pulp Shipments forMoistureT 412 Moisture in Pulp,Paper and PaperboardUM 242 Shive Content in Mechanical Pulp(SomervilleFractionator)3.Terminology3.1 Definitions:3.1.1 Definitions used in this practice are those found inTerminology D1968 or the Dictionary of Paper.33.2 Definitions of Terms Specific to This Standard:3.2.1 stickies,nparticulate,generally non-fibrous,con-taminants suspended in pulps of the type used in papermakingwhich adhere to themselves,other components of the paperstructure,components of the papermaking machinery,and inthe case where the contaminants are incorporated into finishedpaper or paper products,cause the unexpected and generallyundesirable adherence one to another of units of the finishedpaper or paper product.3.2.1.1 DiscussionThe suspended particulate contami-nants are usually of low specific gravity and include,but arenot limited to,residual materials such as adhesives and coatingresidues,films,tapes,rubber-like particles,inks,and hydroly-sis products of synthetic sizing materials.4.Summary of Practice4.1 Aslurry of pulp fibers,after mechanical disintegration ifnecessary,is placed in a separatory device in contact with aplate or screen of defined area having openings of specifiednumber and size.4.1.1 The characteristics of the plate or screen shall be suchthat the stickies contaminants are separated from papermakingfibers at an efficiency required to differentiate and discriminatebetween test materials that are known to contain differentlevels of stickies,or that have been found to exhibit differentperformance in the papermaking process due to the levels ofstickies incorporated within them.4.1.2 In some separatory devices,the slurry is recirculatedin contact with the plate or screen within the separator deviceto achieve stickies separation.In other devices,stickies remain-ing on the plate or screen are washed free from the plate orscreen with a supply of fresh water,or mechanically removedwith tweezers or a similar device.Sometimes both proceduresoccur.1This practice is under the jurisdiction of ASTM Committee D06 on Paper andPaper Products and is the direct responsibility of Subcommittee D06.92 on StandardDocuments Relating to Paper and Paper Products.Current edition approved Dec.1,2007.Published December 2007.Originallyapproved in 1997.Last previous edition approved in 2002 as D6148 97(2002).DOI:10.1520/D6148-97R07.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from Technical Association of the Pulp and Paper Industry(TAPPI),15 Technology Parkway South,Norcross,GA 30092,http:/www.tappi.org.1Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959,United States.NOTICE:This standard has either been superseded and replaced by a new version or withdrawn.Contact ASTM International(www.astm.org)for the latest information4.1.3 The typical plate or screen used for stickies separationin this practice contains slots having a width of 0.15 mm(0.006in.),however slotted plates or screens having a different widthopening,for example 0.10 mm(0.004 in.)or 0.20 mm(0.008in.),have been successfully used in specific applications.4.2 The