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Generallyspeaking,thethree-strandropeismadeofgray-yellowtwine,whichisoftenusedforgiftbags,boutiquebags,shoppingbags,andadvertisingbags.Whatarethebenefitsofthethreestrands?Thiscanbefoundinthecomparison.Iftheclothesaretiedwithatraditionalknottedrope,thisobviouslyreducestheproductionefficiency.Withthethree-strandrope,aslongastheglueisappliedtothepaper,andthenapostiswrapped,theproductionefficiencycanbegreatlyincreased.Ontheotherhand,italsohascompetitors,cardheadropes.Becausethethree-strandropehasarelativelylargeareaofpaper,andthecard-headropehasonlyasmallandexquisitecard-headplastic,whicharedifferentinpriceorcost.Thethree-strandropeisakindoffabricwitharoundbody.Itisacylinderformedbytwistingtwoormorestrandsofyarn.Ithasaclearnaturaltextureandacertainthickness.Throughtheeffectoflightandshadow,thesurfaceofthematerialcanproduceastrongThethree-dimensionalsenseisvisuallyrichinsensoryassociations.Atthesametime,itcanbemadeofavarietyoffiberfabricsorflexiblematerials.Therawmaterialsthatmakeitdetermineitsoveralltextureandmodelingcharacteristics.

Asoneoftheproductsofthenetropefactory,polypropylenemeshropeishighlysoughtafterbyconsumers.PolypropylenehashigherhardnessandhighermeltingpointthanPEmaterial.Randomropesaretypicallybundledwith1to4percentethylenerandomcopolymer.PolymerPPmaterialshavelowerheatdistortiontemperature,lowtransparency,lowgloss,andlowrigidity,buttheyhavestrongerimpactstrength.ThestrengthofPPincreaseswiththeincreaseofethylenecontent,anditssofteningtemperatureisonehundredandfiftydegreesCelsius.Duetoitshighcrystallinity,thesurfacestiffnessandscratchresistanceofthismaterialareverygood,andthereisnoenvironmentalstresscrackingproblem.Tojudgethequalityofpolypropylenemeshrope,itdependsonthepurityofpolypropylene.Theproductionofpurepolypropyleneiscompletelytransparent,theproductionofmasterbatchistranslucent,andtheproductionofrecycledmaterialisbasicallyopaque.Thereisalsoakindofcorematerialmadeoffullyrecycledmaterialsandcalciumcarbonatepowder.Theproductionofcompletelyrecycledmaterialsisrelativelysoft.Onlythesurfaceofthebindingropeofthecorematerialisrawmaterials,andtherestarelimepowder.

Thecommonlyusedchemicalfiberropes(syntheticfiberropes)aremainlythefollowing: (1)Nylonrope(nylonrope):Itisthestrongesttypeofchemicalfiberrope.Itischaracterizedbyabrasionresistance,resistancetoacids,alkalis,oils,etc.,butlargeelongation,largeelasticity,acertaindegreeofwaterabsorption,poorweatherresistance,andthestrengthwilldecreaseafterprolongedexposure. (2)Polyesterrope:Thestrengthissecondonlytonylonrope,themostresistanttohightemperatureandweather,suitableforhighloadcontinuousfriction,strongresistancetoacid,alkaliandoil,thewaterabsorptionrateisonly0.4%,thehighestprice. (3)Polypropyleneropeandethylenerope:theyhavesimilarcharacteristics,thatis,theyhavelowdensity,canfloatonthewatersurface,havelowwaterabsorption,andstillhavesufficientstrengthatlowtemperatures. (4)Vinylonrope:Ithasthesmalleststrengthamongchemicalfiberropes,lookslikeacottonyarnrope,haspoorelasticity,hasmaximumwaterabsorption,isresistanttooilandsaltsubstances,isresistanttoweather,andischeap.

Nylonropeisnylonrope.Nylonandpolypropylenearebothtypesofchemicalfibers.Theybothhavegoodstrengthandtoughness,areabrasion-resistantandlightinweight,sotheycanbeusedasropes.of.Ofcourse,thisisjustoneofthem.Forexample,nyloncanbeusedforweavingfabrics,socks,underwear,clothing,carpets,parachutes,carinteriors,tirecurtains,andsoon.

1.Polyester---Polyesterfiber,alsoknownasPOLYESTER,ischaracterizedbygoodairpermeabilityandmoistureexhaustion.Italsohasstrongresistancetoacidandalkali,andUVresistance.Generally,themultiplesof75Darepolyester,suchas75D,150D,300D,600D,1200D,and1800Darepolyester.Theappearanceoftheclothisdarkerandrougherthannylon.2.Nylon---Nylon,alsoknownasNylon,polyamidefiber.Theadvantagesarehighstrength,highwearresistance,highchemicalresistanceandgoodresistancetodeformationandaging.Thedisadvantageisthatitfeelshard.ThemorefamousonesarePERTEXandCORDURA.Generally,themultiplesof70Darenylon.Forexample,70D,210D,420D,840D,and1680Dareallnylonmaterials.Theglossoftheclothisrelativelybrightandthehandfeelsslippery.Generallyspeaking,thebagsaremadeofnylonOxfordcloth.Thesimplestdifferencebetweennylonandpolyesteristheburningmethod!Polyesteremitsverystrongblacksmoke,nylonemitswhitesmoke,anddependingontheresidueaftercombustion,thepinchofpolyesterwillbreakandthenylonwillbecomeplastic!Intermsofprice,nylonistwiceasmuchaspolyester.Nylon,whichisquicklyrolledandmeltedintoawhitegelwhenitisneartheflame,meltsintheflameanddripsandfoams.Thereisnoflamewhenburning.Itisdifficulttocontinueburningafterleavingtheflame,anditemitscelery..Polyester,easytoignite,meltsneartheflame.Whenburning,itemitsblacksmokewhilemelting,showingayellowflame,emittinganaromaticscent.Afterburning,theashesaredarkbrownlumps,whichcanbetwistedwithyourfingers.Theotherhandwillalsobedifferent.Thepolyesterfeelsrough,andthenylonfeelssmoother.Inaddition,youcanuseanailtoscrape.Afterthenailisscraped,nylonistheobviousmark,andnylonisnotobvious,butthismethodisnotasgoodasOnemethodisintuitiveandeasytoargue.3.CanvasIntermsoffeel,nylonisrelativelysmoothandthecanvasisrelativelyrough;itcanalsobeburnedwithfire.Theresidueisblackandthenyloniscanvas,andtheashisash.Canvasisathickercottonorhempfabric.Itwasnamedforitsoriginaluseonsails.Generally,plainweavesareused,andasmallamountoftwillweavesareused.Warpandweftyarnsareallmadeofmultiplestrands.Canvasisusuallydividedintotwocategories:coarsecanvasandfinecanvas.Coarsecanvas,alsoknownastarpaulin,iscommonlywovenwith58(10Britishbranches)4to7strands.Thefabricisstronganddurable,hasgoodwaterproofperformance,andisusedforthecoverofautomobiletransportationandopenstorageandtentsinthewild.Finecanvaswarpandweftyarnsaregenerally2strandsof58to6strandsof28(10Britishbranches/2to21Britishbranches/6),usedtomakelaborprotectionclothingandsupplies.Afterdyeing,itcanalsobeusedasshoes,travelbags,backpacksandothermaterials.Inaddition,therearerubbercanvases,fire-resistantandradiation-proofshieldingcanvases,andpapermakingmachinecanvases.Inhand,nylonissoft,polyesterishard!Themaindifferencesbetweenpolyesterfabricsandnylonfabricsare:1:thepriceofnylonisabout1timeshigherthanpolyester2:nylonissmootherandsofterthanpolyester3:thewearresistanceisalmostthesame4:nylonhasalittleelasticity.Polyesterhasnoweakness5:Nylondyeingismoredifficultthanpolyesterdyeing

Burningmethod:    Nylon:Itquicklycurlsandmeltsintoawhitecolloidneartheflame.Meltdripsandblistersintheflame.Thereisnoflamewhenburning.Itisdifficulttocontinueburningwithouttheflame.Itexudesthesmellofcelery.Aftercooling,thelightbrownmeltisnoteasytogrind.    Polyester:Itiseasytoignite,anditmeltsneartheflame.Whenburning,itemitsblacksmokewhilemelting.Theflameisyellowandemitsanaromaticscent.Afterburning,theashesaredarkbrownlumps,whichcanbetwistedwithyourfingers.    Polypropylene:Itmeltsneartheflame,easytoburn,burnsslowlyandemitsblacksmokefromthefire,theupperendoftheflameisyellow,thelowerendisblue,anditemitsthesmellofpetroleum.Afterburning,theashishardroundlightyellow-brownparticles,whichisfragilebyhandtwisting.