Ua ntej tsim cov khoom sib xyaw uas tsis muaj kuab tshuaj, nws yog ib qho tsim nyog yuav tsum nyeem cov ntaub ntawv txheej txheem ntau lawm thiab cov kev cai thiab kev ceev faj rau qhov sib piv ntawm cov nplaum uas tsis muaj kuab tshuaj, qhov kub thiab txias siv, av noo, cov xwm txheej kho, thiab cov txheej txheem txheej txheem. Ua ntej tsim khoom, nws yog ib qho tsim nyog los xyuas kom meej tias cov khoom nplaum siv tsis muaj qhov tsis zoo. Thaum pom muaj qhov tsis zoo uas cuam tshuam rau viscosity, lawv yuav tsum nres tam sim ntawd thiab sib txuas lus nrog cov neeg ua haujlwm ntawm lub tuam txhab. Ua ntej siv lub tshuab laminating uas tsis muaj kuab tshuaj, nws yog ib qho tsim nyog los ua kom lub tshuab sib tov, lub tshuab nplaum, thiab lub tshuab laminating ua ntej. Ua ntej tsim cov khoom sib xyaw uas tsis muaj kuab tshuaj, nws yog ib qho tsim nyog los xyuas kom meej tias qhov chaw ntawm cov roj hmab rollers, cov rollers nruj, thiab lwm yamcov khoom ntawm cov khoom siv ntawm lub tshuab sib xyaw ua ke uas tsis muaj kuab paug yog huv si.
Ua ntej pib ua haujlwm, yuav tsum tau xyuas dua seb qhov zoo ntawm cov khoom sib xyaw ua ke puas ua tau raws li qhov yuav tsum tau ua ntawm kev tsim cov khoom sib xyaw. Lub zog ntawm zaj duab xis feem ntau yuav tsum ntau dua 40 dynes, thiab lub zog ntawm BOPA thiab PET zaj duab xis yuav tsum ntau dua 50 dynes. Ua ntej tsim ntau lawm, yuav tsum tau sim qhov kev ntseeg siab ntawm zaj duab xis los ntawm kev sim kom tsis txhob muaj kev pheej hmoo. Tshawb xyuas seb puas muaj kev puas tsuaj lossis qhov tsis zoo hauv cov nplaum. Yog tias pom muaj qhov tsis zoo, pov tseg cov nplaum thiab ntxuav lub tshuab sib tov. Tom qab paub tseeb tias tsis muaj qhov tsis zoo hauv cov nplaum, siv lub khob pov tseg los xyuas seb qhov sib piv ntawm lub tshuab sib tov puas yog. Kev tsim khoom tsuas yog tuaj yeem ua tom qab qhov sib txawv ntawm qhov sib piv yog nyob hauv 1%.
Thaum lub sijhawm tsim khoom, yuav tsum paub meej tias cov khoom zoo li cas. Tom qab sib xyaw ua ke li qub ntawm 100-150m, lub tshuab yuav tsum nres kom paub meej tias cov khoom sib xyaw ua ke zoo li cas, cov xim pleev, qhov nruj, thiab lwm yam puas ua tau raws li qhov yuav tsum tau ua. Thaum lub sijhawm tsim khoom, yuav tsum sau tag nrho cov txheej txheem, suav nrog qhov kub thiab txias ib puag ncig, av noo, cov khoom sib xyaw ua ke, thiab cov txheej txheem khoom siv, kom yooj yim nrhiav thiab txheeb xyuas cov teeb meem zoo.
Cov kev ntsuas kev siv xws li kev siv thiab qhov chaw cia khoom ntawm cov nplaum, qhov kub thiab txias siv, lub sijhawm ua haujlwm, thiab qhov sib piv ntawm cov nplaum tsis muaj kuab tshuaj yuav tsum xa mus rau phau ntawv qhia kev siv khoom. Cov av noo hauv qhov chaw ua haujlwm yuav tsum tau tswj ntawm 40% -70%. Thaum cov av noo yog ≥ 70%, sib txuas lus nrog lub tuam txhab cov neeg ua haujlwm kev txawj ntse thiab nce cov khoom isocyanate (KangDa Khoom Tshiab A Cheebtsam), thiab lees paub nws los ntawm kev sim me me ua ntej siv ua pawg. Thaum cov av noo ib puag ncig yog ≤ 30%, sib txuas lus nrog lub tuam txhab cov neeg ua haujlwm kev txawj ntse thiab nce cov khoom hydroxyl (B Cheebtsam), thiab lees paub nws los ntawm kev sim ua ntej siv ua pawg. Cov khoom yuav tsum tau ua tib zoo tuav thaum thauj khoom thiab thauj khoom, kom tsis txhob muaj kev sib tsoo, kev sib tsoo, thiab kev nyuaj siab, thiab kom tiv thaiv cua thiab hnub ci. Nws yuav tsum khaws cia rau hauv qhov chaw txias, cua nkag, thiab qhuav, thiab khaws cia rau lub sijhawm khaws cia ntawm 6 lub hlis. Tom qab ua tiav cov haujlwm sib xyaw, qhov kub thiab txias yog 35 ° C-50 ° C, thiab lub sijhawm kho tau hloov kho raws li cov khoom sib xyaw sib txawv. Cov av noo ntawm kev kho feem ntau yog tswj tau ntawm 40% -70%.
Lub sijhawm tshaj tawm: Lub Ib Hlis-25-2024