ASTM_D_2050_-_11.pdf

Designation:D205011Standard Terminology Relating toFasteners and Closures Used with 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 terminology document covers terminology pertain-ing to items that are considered fasteners and closures such asbuttons,hook and loop touch fasteners,snap fasteners and slidefasteners used in the manufacture of textile products,except forseams and stitches.1.2 Section 3,Terminology,is categorized into foursubsections,specific to the four areas of specialization underthis document:1.2.1 Relating to Buttons1.2.2 Relating Hook and Loop Touch Fasteners1.2.3 Relating to Snap Fasteners1.2.4 Relating to Slide Fasteners1.3 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.1.3.1 The principal types of buttons defined in this termi-nology document are illustrated in Figs.1-8.1.3.2 These figures are descriptive only and are not intendedto be restrictive as to design.1.4 Terminology relating specifically to snap fasteners in-cludes illustration of prong-ring attached fastener parts in Fig.9.1.4.1 These figures are descriptive only and are not intendedto be restrictive as to design.1.5 Terminology relating specifically to the principle partsof slide fasteners defined in this terminology are illustrated inFigs.10-19.1.5.1 These figures are descriptive only and are not intendedto be restrictive as to design.1.6 Terminology relating specifically to the textile joiningstructures(seams and stitches)are discussed in detail inTerminology D5646.1.7 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 and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D123 Terminology Relating to TextilesD2061 Test Methods for Strength Tests for ZippersD4846 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 BUTTONSassembled 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.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 button.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.1,2011.Published February 2011.Originallyapproved in 1961.Last previous edition approved in 2009 as D2050 09.DOI:10.1520/D2050-11.2For 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 States1 compression 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,or any combina-tion thereof.This method using styrene modified polyesterresin,and having in its formulation pearlescent pigmentswhich are oriented in the molding process,form a button orbutton blank which resembles natural shell.drycleanable button,na button that can be solvent-cleanedwithout damage such as dissolving or loss of finish.electroplated button,nplastic buttons which have beenmade conductive by chemical treatment followed by theelectroplating of metallic coatings.DISCUSSIONIn buttons,plastics such as polyester,a