ASTM_D_2050_-_19.pdf

Designation:D205019Standard Terminology Relating toSubassemblies Used in the Manufacture of Textiles1This standard is issued under the fixed designation D2050;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.Scope1.1 This standard identifies terminology related to subas-semblies used in the construction of textiles both general andspecific and can be categorized as any component or structurethat is used in the construction or assembly of a textile product.Subassemblies can be in the form of closures(for example,slide fasteners,buttons,snap fasteners,hook and loop(touch)fastners)or methods of joining(for example,stitches andseams).1.2 The subassembly terms relating to Buttons are found inTerminology Section 3.1.3 The subassembly terms relating to Hook and Loop(Touch)fasteners are in Terminology Section 4.1.4 The subassembly terms relating to Snap Fasteners arefound in Terminology Section 5.1.5 The subassembly terms relating to Slide Fasteners arefound in Terminology Section 6.1.6 For other terms associated with textiles,refer to Termi-nology D123.1.7 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,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.8 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D123 Terminology Relating to TextilesD1230 Test Method for Flammability of Apparel TextilesD2060 Test Methods for Measuring Zipper DimensionsD2061 Test Methods for Strength Tests for ZippersD3657 Specification for Zipper DimensionsD4846 Test Method for Resistance to Unsnapping of SnapFastenersD5169 Test Method for Shear Strength(Dynamic Method)of Hook and Loop Touch FastenersD5171 Test Method for Impact Resistance of Plastic Sew-Through ButtonsD5646 Terminology Relating to Seams and Stitches Used inHome SewingD7142 Test Method for Holding Strength of Prong-RingAttached Snap Fasteners3.TerminologyRELATING TO BUTTONS3.1 Terminology relating specifically to buttons covers spe-cial terms or special meanings used in the button industry.These apply only to sew-through flange and shank buttons.3.2 The principal types of button defined in this terminologydocument are illustrated in Figs.1-8.These figures are descrip-tive only and are not intended to be restrictive as to design.assembled button,na decorative button consisting of com-binations of similar or dissimilar materials,such as plasticand metal or metal and metal,which have been joinedtogether by such processes as gluing,swedging or metalstamping.bridge,nthe area of a button between the holes partiallycovered by the sewing threads with dimensions varyingupon design and end use.1This terminology is under the jurisdiction ofASTM Committee D13 on Textilesand is the direct responsibility of Subcommittee D13.54 on Subassemblies.Thesedefinitions were developed in cooperation with the American Fastener and ClosureAssn.Inc.Current edition approved Jan.15,2019.Published February 2019.Originallyapproved in 1961.Last previous edition approved in 2011 as D2050 111.DOI:10.1520/D2050-19.2For 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.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 button,na knot,disc,or similar object which when forcedthrough a narrow opening or buttonhole,fastens one part ofa garment or other flexible substrate to another.D5171DISCUSSIONAlthough the primary purpose of buttons is to serve asfasteners,buttons can also be used as decoration.D5171centrifugal cast button,nsee rotation cast pression molding,nthe method of molding a materialalready in a confined cavity by applying pressure and pression molded button,na button or button blankwhich is produced by compression molding thermoset-molding compounds such as urea-formaldehyde,melamine-formaldehyde,styrene-modified polyester,o