ASTM_D_7801_-_17.pdf

Designation:D780117Standard Terminology forPaint Brush Application Tools1This standard is issued under the fixed designation D7801;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 standard establishes the definitions for terminologyused in testing and manufacturing of paint brushes.1.2 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.1.3 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D5068 Practice for Preparation of Paint Brushes for Evalu-ationD5301 Practice for Physical Characterization of PaintBrushesD7073 Guide for Application and Evaluation of Brush andRoller Applied Paint FilmsD7834 Test Method for Filling Material Shedding of PaintBrushes3.Terminology3.1 Definitions:brush ferrule,nthe fitting that houses the butt end of thefilament and secures it to the handle.brush filling material,na set of aligned filament(whethernatural hair,plant fibers or synthetic)used to provide thebrushing portion of a paint brush.brush stiffness,nforce required to deflect the filaments to aparticular displacement.chisel trim,na brush making process in which the tip of thebrush is mechanically(cut or sheared)shaped to a domedprofile.cut-in,vto carefully paint an edge to avoid spreading paintonto an adjacent area.feathering,nfor painting,to reduce the thickness of a wet,coated region(such as using the strokes of a relatively drybrush)so that the edge fades off or softens.fishtail,na condition in which the center filaments of a brushwear down more than the filaments on the side of the brush.formed chisel,na property of a brush produced by a brushmaking process in which the filaments are assembled,formed and bound at the butt end to produce a domed(beveled)profile at the tip end.formulation,na specification that gives the ingredients andamounts or process.heeling,nfor paint brush filaments,reduction of brushperformance caused by paint hardening in the handle(heel)end of the filament bundle.length clear,nthe length of the filament exposed from theferrule edge to the tip of the brush filament.snap,nfor paint brush filaments,the flexibility and resiliencyof brush filaments when bent to one side and then released.tapered filament,na synthetic filament that has a diameterformed during extrusion that decreases uniformly along itsentire length from the larger butt end to the smaller tip.tipped,nfor synthetic filaments,ending in a fine point that isformed by mechanical or chemical processes.wear,nfor paint brush filaments,loss in effectiveness of apaint brush caused by abrasion of the filaments.4.Keywords4.1 brushes;definitions;terminology1This terminology is under the jurisdiction of ASTM Committee D01 on Paintand Related Coatings,Materials,and Applications and is the direct responsibility ofSubcommittee D01.61 on Paint Application Tools.Current edition approved June 1,2017.Published June 2017.Originallyapproved in 2012.Last previous edition approved in 2012 as D7801 12.DOI:10.1520/D7801-17.2For 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.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard.Users of this standard are expressly advised that determination of the validity of any such patent rights,and the riskof infringement of such rights,are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised,either reapproved or withdrawn.Your comments are invited either for revision of this standard or for additional standardsand should be addressed to A