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1、VacuumInfusion-TheEquipmentandProcessofResinInfusionIntroductionTheVacuumInfusionProcess(VIP)isatechniquethatusesvacuumpressuretodriveresinintoalaminate.Materialsarelaiddryintothemoldandthevacuumisappliedbeforeresinisintroduced.Onceacompletevacuumisachieved,resinisliterallysuckedintothelaminateviac
2、arefullyplacedtubing.Thisprocessisaidedbyanassortmentofsuppliesandmaterials.Inatypicalhandlay-up,reinforcementsarelaidintoamoldandmanuallywetoutusingbrushes,rollers,orthroughothermeans.Animprovementonthatmethodistouseavacuumbagtosuckexcessresinoutofthelaminate.Vacuumbagginggreatlyimprovesthefiber-t
3、o-resinratio,andresultsinastrongerandlighterproduct.Ifyouareunfamiliarwithvacuumbagging,werecommendreadingourbrochure,VacuumBaggingEquipmentandTechniquesforRoom-TempApplications,asVIPrequiresexperienceinthisareaandusesmanyofthesameprinciples.Vacuuminfusionbuildsupontheseprinciples,providingfurtheri
4、mprovementstothelaminationprocess.BenefitsofVacuumInfusionVacuuminfusionprovidesanumberofimprovementsovertraditionallyvacuumbaggedparts.Thesebenefitsinclude:•Betterfiber-to-resinratio•Lesswastedresin•Veryconsistentresinusage•Unlimitedset-uptime•CleanerVIPoffersabetterfiber-to-resinratiothanvacuumba
5、gging.Atypicalhandlay-upusuallyresultsinexcessof100%fabricweightbyresin.Resinaloneisverybrittle,soanyexcesswillactuallyweakenthepart.Vacuumbaggingcanreducethisnumbersignificantly;however,itisstillnotidealandcanleadtoadditionalproblems.Whilevacuumbaggingcertainlyimprovesonthehandlay-up,thereisstilla
6、handlay-upinvolved.Becauseofthis,thelaminatewillalwaysbegininanoversaturatedstate.Vacuumpressurewillremovemuchoftheexcessresin,buttheamountremovedstilldependsonavarietyofvariablesincludingreinforcement,resin,timefactors,andothers.Vacuuminfusiontakesadifferentapproach,inthatavacuumisdrawnwhilethemat
7、erialsarestilldry.Fromthatpoint,resinisinfusedusingvacuumpressure.Ratherthanstartingwithexcessanddrawingresinout,VIPstartswithnoneandpushesresinin.Ideally,anyexcessresinthatisintroducedwilleventuallybesucke
