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1、American&Efird,Inc.ThreadScienceThreadScienceIntroduction:ChoosingtheRightThreadThreadisanintegralpartofmanyitemsthatweusedaily.Certainlythevariouscomponentsofourapparelarejoinedwiththreadbutwhataboutthestringthatisattachedtoourteabags?Whatwouldhappentoupholstery,seatbelts,andheadlinerofa
2、nautomobileifthethreadwereremoved?Whatabouttheseamsinourtents,backpacks,sleepingbags,andothercampingequipment?Howarethecomponentsofbaseballsandfootballsjoined?Eachoftheseproductsrequiresathreadwithdifferentphysicalpropertiestoachieveoptimumperformance.Ifyouconsiderthemanyusesofthread,thec
3、omplexityofdesigningathreadbecomesapparent.Considerationmustbegivento:Sewability,loopstrength,linearstrength,elongation,shrinkage,abrasionresistance,colorfastness,andresistancetochemicals,heat,light,etc.Eachcanaffectthedesirabilityofathreadforaparticularend-use.A&Ethreadsaredesignedforman
4、ygeneralandspecificend-uses.Selectingtheproperthreadforyourproductcanbesimplifiedifthesebasicfactorsareconsidered:requiredseamstrength;typeofseam;stitchtypeandnumberofstitchesperinch;typeofmaterialbeingsewn;typeofsewingmachinesandrelatedequipment;conditionsunderwhichtheproductmustperform;
5、normallifeoftheproduct;andcosteffectiveness.Analyzingthesefactorswouldgiveanindicationofwhichphysicalpropertiesaremostimportantinthethread.Selectionthenbecomesamatterofchoosingathreadwiththemostdesirableproperties.Ofcourse,thoroughtestingisnecessarytoconfirmthatthethreadchosenisindeedthec
6、orrectone.A&Ewillbegladtoprovideanynecessarytechnicalassistancetohelpyouselectthebestthreadforyouruse.(SeeTechnicalServices.)10/10/02Page1American&Efird,Inc.ThreadScience:FIBERFiberScienceWhereDoFibersComeFrom?Fibersusedtomakeindustrialsewingthreadscomefromtwomajorsources:•NaturalFibers:C
7、omefromplantsandanimalsandarespunortwistedintoyarns.Cottonisthemostcommonnaturalfiberusedtomakethread.Othernaturalfibersincludesilk,wool,jute,ramie,hemp,andlinen.Naturalfibersaregenerallynotasuniformassyntheticfibersandareaffectedbyclimaticchanges.AtA&E,weusecottona
