ASTM D6287-2017 red 2500 Standard Practice for Cutting Film and Sheeting Test Specimens《切割薄膜和薄片试样的标准实施规程》.pdf

1、Designation: D6287 09D6287 17Standard 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 numb

2、er 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 for cutting film and sheeting specimens for testing.2 The specimens arenick-free, non-stretc

3、hed and can be rapidly prepared.1.2 The values given in SI units are to be considered standard. The values given in parentheses are for information only.1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibilityof the user of t

4、his standard to establish appropriate safety safety, health, and healthenvironmental practices and determine theapplicability of regulatory limitations prior to use.NOTE 1There is no known ISO equivalent to this standard.1.4 This international standard was developed in accordance with internationall

5、y recognized principles on standardizationestablished in the Decision on Principles for the Development of International Standards, Guides and Recommendations issuedby the World Trade Organization Technical Barriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:3D882 Test Method

6、 for Tensile Properties of Thin Plastic SheetingD2838 Test Method for Shrink Tension and Orientation Release Stress of Plastic Film and Thin Sheeting (Withdrawn 2018)4F88 Test Method for Seal Strength of Flexible Barrier MaterialsF1921/F1921M Test Methods for Hot Seal Strength (Hot Tack) of Thermopl

7、astic Polymers and Blends Comprising the SealingSurfaces of Flexible WebsF2029 Practices for Making Laboratory Heat Seals for Determination of Heat Sealability of Flexible Barrier Materials asMeasured by Seal Strength3. Significance and Use3.1 Many test methods including Test Methods D882, D2838, F8

8、8and, F88F1921/F1921M, and F2029 require the use of narrowstrips of varying length. The quality of the sample preparation directly affects test results. This practice describes twothreetechniques for preparing samples with straight, clean, parallel edges with no visible imperfections.NOTE 2After cut

9、ting, each specimen should be examined visually to insure the edges are undamaged (free of nicks). On a periodic basis specimenedge quality should be evaluated by microscopic examination. To determine when cutting blades need to be replaced or sharpened, a control chart oftensile strength and percen

10、t elongation at break (see Test Method D882) of a uniform material may be maintained. Tensile strength and percent elongationat break will decrease as the quality of specimen cutting decreases.4. Apparatus and Materials4.1 Procedure AA hand rotatable drum cutter (Fig. 1) containing a 12.7 cm (5 in.)

11、 diameter drum with grooves at 12.7 mm(0.5 in.) intervals and a blade holder allowing a blade to ride in each groove or be raised above the groove.,NOTE 3Plas-Tech in Boston offered a rotary drum cutter in the 1950s and 1960s which was shown to be an excellent instrument with respect to1 This practi

12、ce is under the jurisdiction ofASTM Committee D20 on Plastics and is the direct responsibility of Subcommittee D20.19 on Film and SheetingFilm, Sheeting,and Molded Products.Current edition approved Sept. 1, 2009Dec. 15, 2017. Published September 2009January 2018. Originally approved in 1998. Last pr

13、evious edition approved in 20052009as D6287 - 05.D6287 - 09. DOI: 10.1520/D6287-09.10.1520/D6287-17.2 This practice does not cover all types of techniques which may be used for cutting film and sheeting specimens.3 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Cus

14、tomer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.4 The last approved version of this historical standard is referenced on www.astm.org.This document is not an ASTM standard and is intended only to

15、provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof

16、the standard as published by ASTM is to be considered the official document.*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 States1yielding nick free non-stretched film specime

17、n(s) at high rates.7 However, Plas-Tech disappeared in the late 1960s and the cutter with them. This typeof cutter has been redesigned to meet current government regulations and retain its original desirable characteristics plus additional improvements.4.2 Procedure BA dual blade shear cutter (Fig.

18、2) with parallelism tolerances within 0.0254 mm (0.001 in.). The cutter cutsindividual strips of a particular sample width.4.3 Procedure CDies with replacable razor-blade cutters are available in many different specimen configurations. The dies areequipped with a spring-loaded mechanism that allows

19、easy specimen removal. These dies are mounted on either a manual orpneumatic press and provide easy replacement of worn cutting elements.,4.4 Scissors.4.5 Marker.4.6 Tape.5. Procedure5.1 Procedure A:A:5.1.1 Cut film or sheeting (with scissors) to approximately 30 by 30 cm (12 by 12 in.) or desired s

20、ize within these dimensions.It is recommended to cut only an individual (single) sheet of film.5.1.2 Mark or number all samples as to identity, direction with respect to material flow, etc.5.1.3 Place sample on work surface in desired direction and place a strip of tape on the sample edge with half

21、the width of thetape overlapping the edge to enable the tape to adhere to the drum of the cutter.5.1.4 Remove the taped sample from the work surface and place taped edge on the drum of the cutter below the blade holderallowing the sample to lie across the top of the cutter.FIG. 1 Hand Rotatable Drum

22、 CutterFIG. 2 Dual Blade Shear CutterD6287 172NOTE 3Line the sample up precisely to ensure specimens are cut in the desired direction of material flow.5.1.5 Turn the handle until the sample falls onto cutter drum. Continue to turn the drum and smooth the sample on the drum.5.1.6 Tape the free corner

23、s of sample 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 blade holder until a click is heard.5.1.11 Turn drum handle until strips fall away f

24、rom drum.5.1.12 Remove strips and place on sheets of paper with proper identification.5.2 Procedure B:B:5.2.1 Mark or number all samples as to identity, direction with respect to material flow, etc. It is recommended to cut only anindividual (single) sheet of film.5.2.2 Slide sample underneath dual

25、blades by moving sample on support platforms until aligned perpendicular to guide bar.5.2.3 Using a firm downward motion press the cutter handle down.5.2.4 Slowly release the cutter handle.5.2.5 Remove strip and place on sheet of paper with proper identification.5.3 Procedure C:C:5.3.1 Mark or numbe

26、r all samples as to identity, direction with respect to material flow, etc. It is recommended to cut only anindividual (single) sheet of film.5.3.2 Examine the cutter blades using a hand magnifier to ensure there are no nicks or other defects in the blades.5.3.3 Install the appropriate cutter in the

27、 unit in accordance with the manufacturers instructions.5.3.4 Place a flat back-up sheet on the cutting platform.NOTE 4Polyethylene or polypropylene sheets or cardboard (two to three mm in thickness) have been found to be satisfactory.5.3.5 Place the sample on the covered cutting platform ensuring t

28、hat there are no creases. If necessary, the edges can be tapedto the platform to keep the sample flat.5.3.6 Activate the cutter (manually or pneumatically) in accordance with the manufacturers directions.5.3.7 Remove the cut specimen from the die and place it on sheet of paper with proper identifica

29、tion.NOTE 5Although blade life is reported to be very long, the blades should be inspected prior to mounting as noted in 5.3.2 or, as a general practice,removed for inspection after every 500 specimens. This interval may vary depending on the types of materials being cut and users are urged to perfo

30、rminspections more frequently at first to monitor wear (Reference Note 2).6. Keywords6.1 film; sample preparation; sheetingSUMMARY OF CHANGESCommittee D20 has identified the location of selected changes to this standard since the last issue,D6287 - 05D6287 - 09, that may impact the use of this stand

31、ard. (September 1, 2009)(December 15, 2017)(1) Corrected ISO equivalency statement.Updated Section 2 and Section 3 with Test Methods F1921/F1921M, and F2029.(2) Added Procedure “C” for razor dies.Deleted Footnotes 4 through 7 as information related to sole suppliers was no longerrelevant.(3) Correct

32、ed several typos throughout the standard.(4) Removed reference to scissors in 5.1.1.D6287 173ASTM 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 determinati

33、on 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 withdr

34、awn.Your comments are invited either for revision of this standard or for additional standardsand should 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 c

35、omments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, 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

36、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). Permission rights to photocopy the standard may also be secured from the Copyright Clear

37、ance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ The sole source of supply of the rotary drum film and sheeting cutter known to the committee at this time is Zebedee Corporation, P.O. Box 395, Landrum, SC 29356.6 If you are aware of alternative suppliers, please provide

38、 this information to ASTM International Headquarters. Your comments will receive careful consideration at ameeting of the responsible technical committee 1, which you may attend.7 Patterson, Gordon D., “An Interlaboratory Study of Cutting Plastic Film Tension Specimens,” Materials Research and Stand

39、ards, April 1964, p. 159.8 The sole source of supply of the razor-blade cutters and associated equipment known 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.D6287 174