Cov txheej txheem tiv thaiv ua npuas ncauj ntim: cov khoom lag luam tau mus hla ntau lub voj voog ua ntej nws tuaj yeem nkag mus hauv khw lossis lwm qhov chaw thiab ncav cuag cov neeg siv khoom. Nyob rau lub sijhawm no, nws yuav tsum mus hla kev thauj khoom thiab thau tawm, kev thauj mus los, khoom lag luam, zaub, kev muag khoom thiab lwm yam txuas. Hauv kev khaws cia thiab kev thauj mus los Ntawm lawv, ntau yam sab nraud, xws li kev cuam tshuam, av noo, lub teeb, roj av, kab mob thiab lwm yam, yuav hem rau kev nyab xeeb ntawm cov khoom. Kev tiv thaiv kev tiv thaiv yog qhov tseem ceeb ntawm lub pob, txawm tias cov khoom tsis yog kev puas tsuaj los ntawm ntau yam sab nraud. Yog li, cov qauv ntawm pob tau xwm yeem nrog Cov Khoom Siv nws yog qhov tseem ceeb heev kom ntseeg tau tias kev nyab xeeb ntawm cov khoom lag luam hauv cov txheej txheem puag ncig. Cov khoom siv ua npuas zoo zoo muaj cov kev tiv thaiv zoo dua qub thiab tuaj yeem lav qhov kev nyab xeeb ntawm cov khoom hauv kev ncig.
Cov khoom siv tseem ceeb ntawm lub npov npaus yog EPS, uas yog feem ntau hu ua polystyrene, thiab ob qho yog qhov sib txawv hauv qhov ceev. Cov ntshiab polystyrene ua npuas lub rooj tsavxwm tsis muaj tshuaj lom, tab sis polystyrene ua npuas pawg thawj coj xav tau ntxiv cov yas ntxiv txhawm rau txhim kho qee lub zog ntawm polystyrene ua npuas board. Cov thawv npauj yog siv rau cov zaub mov, dej haus, zaub huv, nqaij ntses, khoom noj siv mis, butter, chocolate, npaj tshuaj lom, tshuaj tiv thaiv, tshuaj siv tshuaj thiab lwm yam khoom uas yuav tsum muaj cov tub yees txias txias thiab kev thauj mus los. Hauv cov huab cua sov tsis zoo, lub npov npuas yuav tsis tso tawm cov tshuaj lom neeg. Kev siv cov thawv npauj npum ua cov khoom ntim khoom kuj muaj kev nyab xeeb, thiab EPS cov khoom ntim ntim tau yooj yim dua rau rov ua dua tshiab thiab rov siv dua, ua rau lawv ua cov khoom ntim ntsuab zoo.
Ua tib zoo saib xyuas cov ntsiab lus hauv qab no thaum khaws cov thawv ua npuas ncauj:
1. Lub thawv ua npuas dej muaj cov nplaim taws ua rau lub cev tsis haum, yog li hluav taws yuav tsum zam thaum lub sijhawm cia khoom.
2. Qhov chaw khaws cia ntawm lub thawv npuas yuav tsum txias thiab muaj cua zoo. Txhawm rau tiv thaiv tus neeg saib xyuas foaming los ntawm kev khiav nrawm dhau, tswj hwm qhov tsim nyog, qhov kub cia yuav tsum qis dua 25 ℃, thiab ib txwm ua kom muaj qhov cua.
3. Lub npov npaus yuav tsum sim siv cov khoom siv ua ntej, thiab khaws lawv tshiab, txhawm rau kom tau txais kev ua haujlwm ruaj khov thiab cov khoom lag luam zoo.