ASTM_F_1509_-_94_2000.pdf

Designation:F 1509 94(Reapproved 2000)Standard Test Methods forDetermining Acceptability of Ribbon Welds in FabricCartridges1This standard is issued under the fixed designation F 1509;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(e)indicates an editorial change since the last revision or reapproval.1.Scope1.1 These test methods are for evaluating ribbon welds infabric cartridges that do not contain endless woven loops.These test methods apply to ribbon welds made with ultrasonicenergy but do not cover special-purpose welds such as overlapor butt welds.Physical characteristics of ribbon welds and testperformance may be used to predict acceptable function andprinting life of the weld in the finished cartridge.These testmethods are suitable both for comparative evaluations byend-users and for manufacturing control within the ribbonproduct industry.1.2 Since types of ribbon welds and equipment vary,similarfabric cartridges may not contain the same type of ribbon weld.Any evaluation comparing products from different sourcesshould note this.1.3 This standard does not purport to address all of thesafety problems,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:F 1174 Practice for Using a Personal Computer as a TestInstrument23.Terminology3.1 Definition3.1.1 hot spotting printed images produced with an inkedfabric ribbon where occasional individual images are darkerthan those around them;this condition occurs when the amountof ink is not consistent throughout the fabric ribbon.4.Summary of Test Methods4.1 Fabric ribbon welds can be evaluated on the basis of thefollowing characteristics:4.1.1 Appearance,4.1.2 Width,4.1.3 Alignment,4.1.4 Strength,4.1.5 Printability,and4.1.6 Durability.4.2 Test methods for evaluating welds in these areas aredescribed.These test methods are divided into sections byribbon weld characteristic.Each section consists of a testprocedure,results that can be obtained,and what these resultsmay indicate.Each user must determine the tests that arereasonable considering the needs and the equipment available.5.Significance and Use5.1 The test methods described can be used to evaluateacceptability of fabric ribbon welds on a comparative basis.Some,though not all,tests may also be used for manufacturingcontrol.The weld durability test is exclusively for manufac-turing control,since it involves in-process testing.5.2 Users may choose to perform any or all of the testsdescribed,depending upon results desired and equipmentavailable.6.Interferences6.1 Interferences that may impact test results are listed foreach test method to which they apply.6.2 Weld WidthWeld width is best determined with theuse of polarized light,due to the difference between filamentdeformation and physical property changes(that is,melting).6.3 Weld Strength:6.3.1 The type of welding equipment used and operatortechnique may cause variability in weld strength.For weldequipment that does not automatically tension the fabric,thetension applied by the operator when securing the fabric in thefixture can significantly alter the weld strength.6.3.2 The type of nylon,thickness,style,finishing,andslitting of the fabric may cause variability in weld strength.Inkproperties and level of inking of the fabric also contribute tovariability in optimum weld strength.Such ink characteristicsas oil color carriers,type of solids,if present,and quality ofdispersion may be considered.Samples being compared shouldbe classified as closely as possible and tested under equalconditions.6.4 Weld Printability:6.4.1 Certain types of ribbon welds may cause print defectspeculiar to the type of weld.Some welds are not designed to beoverprintable.1These test methods are under the jurisdiction of ASTM Committee F-5 onBusiness Imaging Products and are the direct responsibility of SubcommitteeF05.02 on Inked Ribbons and Carbon Paper.Current edition approved March 15,1994.Published May 1994.2Annual Book of ASTM Standards,Vol 15.09.1Copyright ASTM,100 Barr Harbor Drive,West Conshohocken,PA 19428-2959,United States.6.4.2 Some types of ink formulations and nylon types willbe more prone to hotspotting than others.Hotspotting at theweld could,therefore,be a function of the material rather thanthe welding process.Note evidence of hotspotting elsewhere inprintout.6.5 Weld Durability:6.5.1 The zipper test may not produce meaningful resultswhen welding certain special-application fabrics(that is,twillfabric that does not have a regular weave pattern).6.5.2 Any short loop length and equivalent end of life can becalculated for a product.However,some cartridge designs willnot function properly with radically