1、Designation:D545895(Reapproved 2012)Standard Test Method forPeel Cling of Stretch Wrap Film1This standard is issued under the fixed designation D5458;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number
2、in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This test method measures cling between two layers offilm,in both a stretched and unstretched condition.1.2 This standard does not purport to addr
3、ess 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:2D996 Terminology o
4、f Packaging and Distribution Environ-mentsD1898 Practice for Sampling of Plastics(Withdrawn 1998)3D4332 Practice for Conditioning Containers,Packages,orPackaging Components for TestingE122 Practice for Calculating Sample Size to Estimate,WithSpecified Precision,the Average for a Characteristic of aL
5、ot or ProcessE691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test Method3.Terminology3.1 DefinitionsGeneral definitions for packaging and dis-tribution environments are found in Terminology D996.3.2 Definitions of Terms Specific to This Standard:3.2.1 clingthe pr
6、operty of a materials ability to adhere toitself.3.2.2 stretch wrap materiala material used for over-wrapping which,when applied under tension,elongates,andthrough elastic recovery,conforms to the item(s)packaged.4.Summary of Test Method4.1 This test method is a peel cling procedure.A1 in.(25mm)wide
7、 film strip is adhered to a flat film attached to aninclined surface.The force required to remove the film stripfrom the flat film is measured.5.Significance and Use5.1 Cling is of critical importance in maintaining a tightwrap after a load is stretch wrapped.6.Equipment and Preparation6.1 Apparatus
8、Auniversal testing machine with a constantrate of grip separation equipped,as follows:6.1.1 One lightweight jaw equipped with 1 by 1.5 in.(25 by38 mm)flat rubber-faced grips,6.1.2 Cling attachment(see Figs.1-5),6.1.3 Cling clamp(see Fig.6),6.1.4 Load cell,500-g load capacity,6.1.5 If using pneumatic
9、 grips,air supply,60 to 70 psi withappropriate filter,6.1.6 Sample template,picture-frame style with inside di-mensions of 5 by 20 in.(125 by 500 mm),6.1.7 Precision sample cutter,1 6 0.001 in.(25.4 6 0.03mm)width,with precision of 1 6 0.001 in.(25.4 6 0.03 mm),46.1.8 Single-edged safety razor blade
10、,6.1.9 Synthetic bristle paint brush,2 in.(50 mm)wide,6.1.10 Ruler,12 in.(approximately 300 mm),6.1.11 Separation paper,8.5 by 12 in.(approximately 125by 280 mm)bond,6.1.12 String,24 in.(approximately 610 mm)nonelastic,such as dental floss or fishing line,6.1.13 Steel rod,approximately 0.25 in.(6 mm
11、)in diameterand 10 in.(255 mm)long.6.1.14 Cutting surface,approximately 36 by 36 in.(approxi-mately 900 by 900 mm)plate glass,0.25 in.(6 mm)thick.6.2 Preparation of Apparatus:6.2.1 Install the load cell on the upper set frame and allow15-min warm-up period.6.2.2 Install the upper lightweight jaw.1Th
12、is test method is under the jurisdiction of ASTM Committee D10 onPackaging and is the direct responsibility of Subcommittee D10.25 on Palletizingand Unitizing of Loads.Current edition approved April 1,2012.Published May 2012.Originallyapproved in 1994.Last previous edition approved in 2007 as D5458
13、95(2007).DOI:10.1520/D5458-95R12.2For 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.3The last approved version of thi
14、s historical standard is referenced onwww.astm.org.4JDC-1-10 Cutter is available from Thwing-Albert Instrument Co.,10960Dutton Rd.,Philadelphia,PA 19154 or other manufacturers.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 NOTE11 in.=25
15、mm.FIG.1 Overall FixtureNOTE11 in.=25 mm.FIG.2 Incline SurfaceD5458 95(2012)2 6.2.3 Remove the lower jaw and install the clingattachment,using the locking pin to secure.6.2.4 Feed the end of the string not fastened to the clampthrough the pulley on the cling attachment and place in thecenter of the
16、upper jaw.6.2.5 With the clamp resting at the base of the incline(which is in position on the base plate),adjust the crosshead,orthe amount of string pulled through the grips,or both incombination,to achieve a distance of 5 by 7 in.(125 by 180mm)between the top of the pulley and the bottom of the grips.Tighten the upper jaw.Adjust the crosshead return stop asnecessary.6.2.6 Set the testing machine crosshead speed for 5 in.(125mm).(Any chart speed is acceptable.)6.2.7 Zero,balance,and calibrate t
