1、Designation: D 6287 05Standard Practice forCutting Film and Sheeting Test Specimens1This standard is issued under the fixed designation D 6287; 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
2、parentheses indicates the year of last reapproval. Asuperscript epsilon (e) 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 a
3、nd can be rapidly prepared.1.2 The values given in SI units are to be considered thestandard. The values given in brackets are for information only.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 st
4、andard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.NOTE 1There is no similar or equivalent ISO standard.2. Referenced Documents2.1 ASTM Standards:3D 882 Test Methods for Tensile Properties of Thin PlasticSheetingD 2838
5、 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 D 882,D 2838 and F88require the use of narrow strips of varyinglength. The
6、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.NOTE 2After cutting, each specimen should be examined visually toinsure the edges are undamaged (free of nic
7、ks). 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 D 882) of a uniform material may be maintained. Tensile s
8、trengthand 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
9、in each groove or be raised above the groove.4NOTE 3Plas-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.5However,Plas-Tech disappeared in the late 1960s and
10、 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 i
11、ndividual strips of a particular sample width.4.3 Scissors.4.4 Marker.4.5 Tape.5. Procedure5.1 Procedure A:5.1.1 Cut film or sheeting (with scissors) approximately 30by 30 cm 12 by 12 in. or desired size within these dimen-sions. It is recommended to cut only an individual (single)sheet of film.5.1.
12、2 Mark or number all samples as to identity, directionwith respect to material flow, etc.5.1.3 Place sample on work surface in desired direction andplace a strip of tape on the sample edge with half the width ofthe tape overlapping the edge to enable the tape to adhere to thedrum of the cutter.5.1.4
13、 Remove the taped sample from the work surface andplace taped edge on the drum of the cutter below the bladeholder allowing the sample to lie across the top of the cutter.1This practice is under the jurisdiction ofASTM Committee D20 on Plastics andis the direct responsibility of Subcommittee D20.19
14、on Film and Sheeting.Current edition approved March 1, 2005. Published March 2005. Originallyapproved in 1998. Last previous edition approved in 1998 as D 6287 - 98.2This practice does not cover all types of techniques which may be used forcutting film and sheeting specimens.3For referenced ASTM sta
15、ndards, 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 co
16、mmittee at this time is Zebedee Corporation, P.O. Box 395, Landrum, SC29356. If 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
17、 may attend.5Patterson, Gordon D., “An Interlaboratory Study of Cutting Plastic FilmTension Specimens,” Materials Research and Standards, April 1964, p. 159.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Consh
18、ohocken, PA 19428-2959, United States.NOTE 4Line the sample up precisely to ensure specimens are cut inthe desired direction of material flow.5.1.5 Turn the handle until the sample falls onto cutterdrum. Continue to turn the drum and smooth the sample on thedrum.5.1.6 Tape the free corners of sample
19、 if necessary.5.1.7 Align tape with cutter blades.5.1.8 Pull blade knob to drop blades just in front of tape.5.1.9 Rotate the drum with the drum handle.5.1.10 Raise blades by lifting the front edge of the bladeholder until a click is heard.5.1.11 Turn drum handle until strips fall away from drum.5.1
20、.12 Remove strips and place on sheets of paper withproper identification.5.2 Procedure B:5.2.1 Mark or number all samples as to identity, directionwith respect to material flow, etc. It is recommended to cut onlyan individual (single) sheet of film.5.2.2 Slide sample underneath dual blades by moving
21、sample on support platforms until aligned perpendicular toguide bar.5.2.3 Using a firm downward motion press the cutter handledown.5.2.4 Slowly release the cutter handle.5.2.5 Remove strip and place on sheet of paper with properidentification.6. Keywords6.1 film; sample preparation; sheetingFIG. 1 H
22、and Rotatable Drum CutterFIG. 2 Dual Blade Shear CutterD6287052SUMMARY OF CHANGESCommittee D20 has identified the location of selected changes to this standard since the last issue,D 6287 - 98, that may impact the use of this standard. (March 1, 2005)(1) Added 1.2.(2) Added SI unit to 4.2.ASTM Inter
23、national 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
24、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 shou
25、ld be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Stan
26、dards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).D6287053
