Cov khawv koob tom qab lub tsho mos, cushioned tsim los ntawm ib qhoEPE ua npuas ncauj tshuabnyob rau hauv cov tshuaj tiv thaiv ntawm tshuab tshuab. Cov neeg ua haujlwm no yog lub luag haujlwm los tsim cov npuas me me uas suav tsis txheeb-los yog cov hlwb- uas muab Expanded Polyethylene (EPE) nws cov khoom tshwj xeeb. Nkag siab seb cov tshuab tshuab ua haujlwm cuam tshuam nrog koj li casEPE ua npuas ncauj tshuab yog qhov tseem ceeb rau kev tsim cov khoom zoo - zoo.
Feem ntau siv tshuab tshuab hauv ibEPE ua npuas ncauj tshuabyog Butane (C₄H₁₀). Thaum txhaj rau hauv cov dej LDPE molten, butane vaporizes, tsim cov roj hlwb. Tus yuam sij rau kev vam meej yog ua tiav cov qauv ntawm tes tsis sib xws. Yog hais tias tus neeg sawv cev siv ntau npaum li cas tsawg dhau, lub net yuav ntom thiab tawv, tsis muab cov cushioning txaus. Piv txwv li, ntau dhau ntawm butane tuaj yeem ua rau cell coalescence, ua rau lub cev qhuav dej lossis txawm tias tawg decompression ntawm lub taub hau tuag.
Talc hmoov plays lub luag haujlwm tseem ceeb hauv kev txhawb nqa. Ua raws li tus neeg sawv cev nucleating, talc muab qhov chaw rau npuas tsim. Yog tsis txaus talc, lubEPE ua npuas ncauj tshuabTej zaum yuav tsim cov npuas loj, tsis tu ncua uas cuam tshuam lub net lub zog. Qhov piv ntawm LDPE : Talc : Butane yog ib qho kev tiv thaiv tsis pub leej twg paub rau ntau lub tuam txhab, tab sis qhov pib pib yog nyob ib puag ncig 100: 5: 10 los ntawm qhov hnyav.
Temperature tswj nyob rau hauv lubEPE ua npuas ncauj tshuablub thoob yog qhov tseem ceeb rau kev ua haujlwm ntawm tus neeg sawv cev. Lub melting seem yuav tsum kub txaus kom yaj cov polymer tab sis txias txaus kom tiv thaiv kom tsis txhob muaj roj nthuav tawm ntxov ntxov. Ntu metering ces txias cov yaj me ntsis kom viscosity, ntxiab cov pa npuas ua ntej lawv mus txog qhov tuag.
Niaj hnubEPE ua npuas ncauj tshuab cov qauv muaj qhov siab -cov twj tso kua mis rau kev txhaj tshuaj tshuab. Cov twj tso kua mis no ua kom muaj tus nqi ntws tsis tu ncua, uas ncaj qha cuam tshuam nrog ua npuas ncauj ntom ntom. Kev hloov pauv hauv lub twj tso kua mis ceev ua rau qhov tsis sib xws ntawm qhov hnyav thiab cov khoom siv kho tshuab.
Kev nyab xeeb yog qhov tseem ceeb thaum tuav cov tshuaj tua hluav taws kub. Xyuas kom kojEPE ua npuas ncauj tshuabyog nruab nrog tawg-cov pov thawj motors, static grounding, thiab muaj cua txaus nyob rau hauv qhov chaw tsim khoom.
Hauv kev xaus, mastering the art of blowing agent management transforms yourEPE ua npuas ncauj tshuablos ntawm ib qho yooj yim extruder mus rau hauv precision ua npuas ncauj raug kaw lus. Yog tias koj tab tom ntsib teeb meem zoo xws li nto pitting lossis tsis sib haum xeeb elasticity, tshuaj xyuas koj lub tshuab tshuab thiab cov txheej txheem yuav tsum yog koj thawj kauj ruam. Tiv tauj peb rau kev txheeb xyuas ntxaws txog kojEPE ua npuas ncauj tshuabkev formulation.