1、Designation:D395012aStandard Specification forStrapping,Nonmetallic(and Joining Methods)1This standard is issued under the fixed designation D3950;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()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope1.1 This specification covers nonmetallic strapping andjoining metho
3、ds intended for use in closing,reinforcing,andbundling articles for shipment,unitizing,palletizing,andbracing for car loading and truck loading.1.2 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are pro
4、vided for information onlyand are not considered standard.1.3 The following safety hazards caveat pertains only to thetest method portion,Section 12,of this specification:Thisstandard does not purport to address all of the safety concerns,if any,associated with its use.It is the responsibility of th
5、e userof this standard to establish appropriate safety and healthpractices and determine the applicability of regulatory limita-tions prior to use.2.Referenced Documents2.1 ASTM Standards:2D996 Terminology of Packaging and Distribution Environ-mentsD3951 Practice for Commercial PackagingD4332 Practi
6、ce for Conditioning Containers,Packages,orPackaging Components for Testing2.2 Other Standards:ANSI/ASQC Z1.4Sampling Procedures and Tables forInspection by Attributes3ANSI/ASQC Z1.9 Sampling Procedures and Tables for In-spection by Variables for Percent Nonconforming33.Terminology3.1 For general def
7、initions of packaging and distributionenvironments,see Terminology D996.4.Classification4.1 Types and Grades:Type I Strapping,bonded rayon cord.Grade 1Light duty.Grade 2Regular duty.Grade 3Heavy duty.Type IA Strapping,Bonded,Composite or Woven polyester cord.Grade 1Light duty.Grade 2Regular duty.Gra
8、de 3Heavy duty.Grade 4Extra heavy duty.Grade 5Special duty.Grade 6Special duty.Grade 7Special duty.Type II Strapping,polypropylene plastic.Type III Strapping,nylon plastic.Type IV Strapping,polyester plastic.5.Ordering Information5.1 The inquiry and order shall indicate the following:5.1.1 Type,grad
9、e,and dimensions required(see 4.1 and7.1),5.1.2 Length per coil(see 8.1),5.1.3 Joining method(see 6.2),type and size required(ifneeded),5.1.4 If an embossed finish on strapping is desired orallowed(see Footnote in Table 1,Table 2,and Table 3),5.1.5 Make and model of strapping equipment that thestrap
10、ping and joining method must work in,if applicable,5.1.6 Coil dimensions(see 8.1),5.1.7 Level of packaging and packing if other than commer-cial(see Section 15),and5.1.8 ASTM designation and date of issue.6.Materials and Manufacture6.1 Materials shall be of the quality necessary to meet thephysical
11、requirements within the allowable dimensions.6.1.1 Type IStrapping shall consist of longitudinal rayoncords bonded with a plastic binder so that a nonwoven materialis formed.6.1.1.1 Type IAStrapping shall consist of longitudinalpolyester cords either bonded with a plastic binder to form a1This speci
12、fication 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 Nov.1,2012.Published December 2012.Originallyapproved in 1980.Last previous edition approved in 2011 as D3950 11.
13、DOI:10.1520/D3950-12A.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.3Available from American National Standards
14、Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036,http:/www.ansi.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 nonwoven material(Bonded);or encased in a polypropyleneextrusion(Composite);or woven with a weft thread and treat
15、edwith a plastic binder to form a woven material(Woven).6.1.2 Type IIStrapping shall be an extruded,orientedpolypropylene.6.1.3 Type IIIStrapping shall be an extruded,orientednylon.6.1.4 Type IVStrapping shall be an extruded,orientedpolyester.6.2 Joining MethodsIf seals or buckles are to be used,the
16、y shall be steel and have a coating of zinc,black iron oxide,or equivalent protection from corrosion,or buckles may bemade of plastic.7.Mechanical Properties7.1 Breaking Strength and Elongation(see 12.2):7.1.1 Type I and Type IA strapping shall conform to thebreaking strengths and elongations prescribed in Table 4 andTable 5.7.1.2 Type II strapping shall conform to the breakingstrengths and elongations prescribed in Table 1.7.1.3 Type III strapping shall conform to the breakingstrengths and elon
