Melamine impregnated ntawv, siv cov ntawv zoo nkauj zoo nkauj, impregnated nrog melamine resin, ces laminated rau txhua yam ntoo raws li cov vaj huam sib luag. Nws ua si zoo nkauj zoo nkauj rau saum npoo ntawm panels, thiab ua rau saum npoo resistant rau qhov kub thiab txias, hnav-tiv taus thiab tiv thaiv kev ua qias tuaj.
Tam sim no lub impregnation feem ntau siv ob zaug saturation. Daim ntawv décor yog thawj zaug impregnated nrog ib txwm melamine resin kom tau cov tub ntxhais txheej, ces siv zoo melamine resin rau ob impregnation.Lub melamine resin nyob rau hauv ob lub sij hawm impregnation tuaj yeem hloov kho raws li kev xav tau los xyuas kom meej qhov kawg ntawm melamine impregnated ntawv, thiab ua kom cov khoom siv nyiaj txiag. Impregnation muaj cov cai nruj ntawm cov ntawv luam tawm thiab cov melamine resin. Cov resin tom qab kev hloov kho yuav tsum tau txais qhov hloov pauv, uas tuaj yeem tiv thaiv qhov tawg tawg. Nyob rau hauv qhov tseeb ntau lawm, melamine resin kuj yuav tsum tau ntxiv ntau yam additives.
Txhawm rau lav qhov zoo ntawm melamine impregnated ntawv, cov ntawv zoo nkauj yuav tsum tau siv. Cov ntawv zoo nkauj tsis muaj α pulp fiber, ua haujlwm zoo hauv cov xim ploj, thiab tiv taus qhov kub ntawm 180 C, thiab zoo opacity. Nyob rau hauv ib txwm grammage ntawm décor daim ntawv yuav tsum yog 70-90g / ㎡, nrog kam rau ua ntawm ± 2g / ㎡, cov ntsiab lus noo noo 2.5-4.2%, PH tus nqi 6.5-7.5. Yog tias tus nqi PH tsawg dhau lawm, nws yuav ua rau lub ntsej muag thaum lub sij hawm impregnation. Txhawm rau kom tsis txhob tawg thaum lub sij hawm impregnation, qhov ntev ntawm qhov ntev ntub dej so yog tsawg kawg yog 450m, thiab lateral 300m. Yuav kom tau txais ib qho zoo impregnation ceev, décor daim ntawv yuav tsum muaj siab absorbent nrog ceev nkag. Dej nqus qhov siab xav tau: ntsug 25-35mm / min, kab rov tav 22-30mm / min. Smoothness ntawm décor daim ntawv yuav tsum yog nruab nrab, tsawg dhau yuav cuam tshuam rau cov nyhuv lamination ntawm qhov chaw thiab siab dhau yuav txo tau lub peev xwm ntawm impregnating resin.
Modulation resin feem ntau yog MF thiab UF, nrog rau ntau yam additives. Curing additive plays lub luag hauj lwm ntawm catalyst kom ceev curing lub sij hawm thaum lamination. Wetting additive yog los txo qhov nro ntawm cov resin, thiab txhim khu lub peev xwm nkag mus rau ntawm daim ntawv zoo nkauj kom paub meej tias cov impregnation uniformity. Tso tawm additive yog siv los tiv thaiv daim ntawv impregnated los ntawm steel phaj thaum lub sij hawm lamination.Defoaming additive yog siv kom tsis txhob muaj npuas nyob rau hauv resin da dej uas yuav cuam tshuam impregnating uniformity. Cov kuab tshuaj yog dej los yog ethanol, diluted los kho cov viscosity kom tau zoo permeability ntawm daim ntawv décor. Siv cov kua nplaum tshwj xeeb los ua melamine formaldehyde resin thiab urea formaldehyde resin, thiab tom qab ntawd ntxiv cov hloov kho thiab khaws cia, thaum kawg ntxiv cov khoom siv tawv tawv, ntub dej ntxiv, tso tshuaj ntxiv, foaming additives thiab lwm yam additives, txhaj rau hauv cov dej da dej. Tom qab ob zaug impregnation, cov ntawv zoo nkauj yuav tsum tau qhuav, txias thiab txiav rau hauv qee qhov ntau thiab tsawg. Qhov loj yuav tsum yog li 10-30mm loj dua panels nyob rau hauv dav thiab ntev.Nyob rau hauv cov txheej txheem impregnation, peb yuav tsum ua raws li cov kev cai nruj ntawm cov txheej txheem kev khiav hauj lwm, kuaj kuaj txhua txhua 30 min, lav resin ntsiab lus ntawm 130-150%, volatile teeb meem Cov ntsiab lus 6-7%, pre-curing degree ≦ 65%. Nrog kev pom zoo, cov ntawv tiav melamine impregnated daim ntawv tuaj yeem ntim tau los ntawm polyethylene zaj duab xis. Txog 200 daim ntawv rau ib lub hnab, 10 bales txhua lub pallet. Txhawm rau ua kom cov lamination zoo, melamine impregnated ntawv yuav tsum muab khaws cia rau hauv qhov chaw zoo. Tus txheeb ze av noo nyob rau hauv lub warehouse yog 60 ± 5%, thiaj li hais tias daim ntawv yuav tsis nqus los yog tso dej noo. Qhov kub yuav tsum yog 20-25 ℃. Kub kub thiab av noo siab ua rau cov ntaub ntawv impregnated ua mos thiab nplaum. Tab sis daim ntawv impregnated yog ib qho yooj yim tawg thaum qhov kub thiab txias qis heev. Lub txee lub neej ntawm daim ntawv impregnated yog li 3 lub hlis yog tias lawv khaws cia zoo. Txhawm rau tiv thaiv cov nplaum vim yog nqus dej noo, thov rov ntim thiab kaw zoo ib zaug qhib.
Cov ntsiab lus ntawm resin (khoom resin txheeb ze rau qhov hnyav ntawm cov resin) yog 130-150%. Cov ntsiab lus tsis tshua muaj resin coj tsis muaj zog ntawm daim ntawv, thiab nws yooj yim rau dimex. Cov ntsiab lus melamine tsim nyog yog qhov zoo rau lamination hauv kev tsim khoom thiab zoo. Thaum cov ntsiab lus resin siab dhau lawm, nws yooj yim tawg. Cov ntsiab lus ntawm volatile teeb meem (ntawm 160 ℃ ziab rau 10 feeb) yog 6-7%.