glossary_plastic_injection_molding_engineering_manufacturing[1]

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1、GlossaryofPlasticInjectionMoldingTermsAbrasionResistance:Theabilityofamaterialtowithstandmechanicalactionssuchasrubbing,scraping,orerosion,thattendprogressivelytoremovematerialfromitssurface.Acceptablerunner/cavityratio:runnersystemsdesignedforhighpressuredropstominimizematerialusageandincreasef

2、rictionalheatingintherunner.Additive:Asubstancecompoundedintoaresintoenhanceorimprovecertaincharacteristics.AdhesiveAssembly:Theprocessofjoiningtwoormoreplasticpartsbymeansofanadhesive.Aging:Theprocessof,ortheresultsof,exposureofplasticstonaturalorartificialenvironmentalconditionsforaprolongedpe

3、riodoftime.AirBurn:Apatchorstreakofbrownorblackmaterialonthecomponentcausedbyairorgasesthathavenotbeenproperlyventedfromthemoldandhavecausedthematerialtooverheatandburn.Alloy:Atermusedintheplasticsindustrytodenoteblendsofpolymersorcopolymerswithotherpolymersorelastomers.-i.e.ABS/Polycarbonate.Am

4、bientTemperature:Thetemperatureofamediumsurroundinganobject.Thetermisoftenusedtodenoteprevailingroomtemperature.Amorphous:Devoidofcrystallinityorstratification.Mostplasticsareamorphousatprocessingtemperatures.Materialassumesmorerandommolecularstructurewhencooling.Anisotropy:Thetendencyofamateria

5、ltoreactdifferentlytostressesappliedindifferentdirections.Annealing:Theprocessofrelievinginternalstressesofmoldedplasticarticlesbyheatingtoapredeterminedtemperature,maintainingthistemperatureforapredeterminedlengthoftime,andslowlycoolingthearticles.ANSI:AbbreviationforAmericanNationalStandardsIn

6、stitute.Antioxidant:Additiveusedtoreducedegradationfromoxygenattackatnormalorelevatedtemperatures.Sourcessuchasheat,age,chemicals,and/orstressmayaccelerateoxygenattack.Antiozonants:Theseadditivesareusedtopreventthenegativeeffectsofozoneontheresinmaterials.AntistaticAgent:Additiveusedtoimprovethe

7、electricalconductivityoftheplasticpartsothatanychargecanreadilygotogroundandnotremaininthepart.Application:Theactofapplyingorputtingtouse.Whatthemoldedplasticarticlewillbeinitsfinalform.Artificiallybalancedrunnersystem:balan