ASTM_D_6287_-_09.pdf

Designation:D628709Standard Practice forCutting Film and Sheeting Test Specimens1This standard is issued under the fixed designation D6287;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.Scope*1.1 This practice covers equipment and techniques forcutting film and sheeting specimens for testing.2The speci-mens are nick-free,non-stretched and can be rapidly prepared.1.2 The values given in SI units are to be consideredstandard.The values given in parentheses are for informationonly.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.NOTE1There is no known ISO equivalent to this standard.2.Referenced Documents2.1 ASTM Standards:3D882 Test Method for Tensile Properties of Thin PlasticSheetingD2838 Test Method for Shrink Tension and OrientationRelease Stress of Plastic Film and Thin SheetingF88 Test Method for Seal Strength of Flexible BarrierMaterials3.Significance and Use3.1 Many test methods including Test Methods D882,D2838,and F88 require the use of narrow strips of varyinglength.The quality of the sample preparation directly affectstest results.This practice describes two techniques for prepar-ing samples with straight,clean,parallel edges with no visibleimperfections.NOTE2After cutting,each specimen should be examined visually toinsure the edges are undamaged(free of nicks).On a periodic basisspecimen edge quality should be evaluated by microscopic examination.To determine when cutting blades need to be replaced or sharpened,acontrol chart of tensile strength and percent elongation at break(see TestMethod D882)of a uniform material may be maintained.Tensile strengthand percent elongation at break will decrease as the quality of specimencutting decreases.4.Apparatus and Materials4.1 Procedure AA hand rotatable drum cutter(Fig.1)containing a 12.7 cm(5 in.)diameter drum with grooves at12.7 mm(0.5 in.)intervals and a blade holder allowing a bladeto ride in each groove or be raised above the groove.4,5NOTE3Plas-Tech in Boston offered a rotary drum cutter in the 1950sand 1960s which was shown to be an excellent instrument with respect toyielding nick free non-stretched film specimen(s)at high rates.6However,Plas-Tech disappeared in the late 1960s and the cutter with them.Thistype of cutter has been redesigned to meet current government regulationsand retain its original desirable characteristics plus additional improve-ments.4.2 Procedure BA dual blade shear cutter(Fig.2)withparallelism tolerances within 0.0254 mm(0.001 in.).The cuttercuts individual strips of a particular sample width.4.3 Procedure CDies with replacable razor-blade cuttersare available in many different specimen configurations.Thedies are equipped with a spring-loaded mechanism that allowseasy specimen removal.These dies are mounted on either amanual or pneumatic press and provide easy replacement ofworn cutting elements.7,54.4 Scissors.4.5 Marker.4.6 Tape.1This practice is under the jurisdiction ofASTM Committee D20 on Plastics andis the direct responsibility of Subcommittee D20.19 on Film and Sheeting.Current edition approved Sept.1,2009.Published September 2009.Originallyapproved in 1998.Last previous edition approved in 2005 as D6287-05.DOI:10.1520/D6287-09.2This practice does not cover all types of techniques which may be used forcutting film and sheeting specimens.3For 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.4The sole source of supply of the rotary drum film and sheeting cutter known tothe committee at this time is Zebedee Corporation,P.O.Box 395,Landrum,SC29356.5If you are aware of alternative suppliers,please provide this information toASTM International Headquarters.Your comments will receive careful consider-ation at a meeting of the responsible technical committee1,which you may attend.6Patterson,Gordon D.,“An Interlaboratory Study of Cutting Plastic FilmTension Specimens,”Materials Research and Standards,April 1964,p.159.7The sole source of supply of the razor-blade cutters and associated equipmentknown to the committee at this time is the Dumbbell Co.,Ltd,2243-1 KasahataKawagoe-Shi,Saitama,350-1175 Japan,represented by Ontario Die International,235 Gage Avenue,Kitchener,ON,N2M 2C9.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 5.Procedure5.1 Procedure A