High -tej ntim retort kub (xws li rau cov nqaij retort hnab los yog tus kheej-cov hnab ntim khoom noj cua sov) yog ib qho ntawm cov kev xav tau tshaj plaws hauv cov khoom ntim khoom. Cov hnab yuav tsum tiv taus siab - kub kom tsis muaj menyuam ntawm 121℃lossis txawm 135℃, thiab tswj kev ncaj ncees ntawm lawv cov txheej txheem hauv qab qhov kev hloov pauv ib puag ncig hauv lub tshuab ua kom siab. Hauv qhov kev sim "siab cooker" no, lubnplaumyog kab kawg ntawm kev tiv thaiv pob tawg lossis delamination. Kev xaiv cov nplaum tsis zoo tuaj yeem tsis tsuas yog ua rau muaj qhov tsis zoo ntawm qhov tsis zoo, tab sis kuj tseem tuaj yeem ua rau muaj teeb meem kev nyab xeeb ntawm zaub mov.
Yam 1: Thermal Resistance thiab Stability nyob rau hauv qhov kub heev
Thaum lub sij hawm retort txheej txheem, lub cev muaj zog ntawm polyester zaj duab xis thiab txheej txheej zaj duab xis undergo drastic hloov. Cov nplaum yuav tsum muaj thermal stability zoo:
Crosslink Density: High-kev ua tau zoo retort adhesives yuav tsum tsim ib tug ntom, cross- txuas network qauv kom ntseeg tau tias molecular chains tsis tawg nyob rau hauv siab kub.
Thermal Shrinkage Buffering: Cov txheej txheem sib txawv muaj qhov sib txawv ntawm qhov sib txawv ntawm qhov kub thiab txias. Cov nplaum yuav tsum ua raws li "txheej txheej tsis," absorbing interfacial stresses thiab tiv thaiv phenomena xws li tunneling los yog delamination los ntawm substrate shrinkage.
Qib Classification: Cov neeg tsim khoom yuav tsum paub meej qhov txawv ntawm cov txheej txheem yuav tsum tau ua -txawm tias cov nplaum tsuas yog xav tau kom ua tau raws li tus qauv retort ntawm 121 degree, lossis yuav tsum tiv taus qhov xav tau ntau dua ultra- siab- kub tam sim no kom tsis muaj menyuam ntawm 135℃.
Yam 2: Tshuaj tiv thaiv rau cov khoom ntim
High - qhov kub thiab txias ib puag ncig ua kom cov permeation ntawm cov rog sab hauv, acidic tshuaj, los yog txuj lom rau hauv kev sib xyaw ua ke:
Los tiv thaiv -nruab nrab Attack: Ntau cov nplaum zoo ib yam sai sai thaum sib cuag nrog cov roj zaub lossis acetic acid. Tshwj xeeb retort adhesives yuav tsum muaj zog heev tiv thaiv chemical yaig.
Tshwj xeeb Formula Optimization: Rau cov ntsiab lus nrog cov ntsev siab, roj siab, lossis muaj zog corrosive Cheebtsam (xws li cov roj chili lossis curry), cov txheej txheem ntawm cov nplaum yuav tsum tau hloov kho tshwj xeeb los xyuas kom meej tias lub tev lub zog tseem ua tau raws li qhov yuav tsum tau ua tom qab ntev - khaws cia.
Adhesion thiab Durability : Yuav tsum pom zoo adhesion rau substrates xws li PET, aluminium ntawv ci, thiab CPP, thiab tuav ruaj khov tev lub zog tom qab siab -kub retorting.
Yam 3: Kev Nyab Xeeb Kev Nyab Xeeb Kev Nyab Xeeb Khoom Noj thiab Kev Tswj Xyuas Cov Khoom seem
Kev nyab xeeb yog lub neej ntawm retort ntim. Cov tshuaj muaj pes tsawg leeg ntawm cov nplaum yuav tsum tau tswj nruj me ntsis:
Primary Aromatic Amine (PAA) Tiv Thaiv: Polyurethane adhesives yuav tsim teeb meem thawj aromatic amines thaum lub sij hawm tsis tiav cov tshuaj tiv thaiv los yog tsis txaus, uas yuav tsiv mus nyob rau hauv cov zaub mov. Kev siv cov tshuaj tua kab mob nrog cov tshuaj tiv thaiv siab yog qhov tseem ceeb los txo qhov kev pheej hmoo no.
Kev Ntsuas Cov Khoom Siv Hauv Cov Khoom Siv: tag nrho cov kuab tshuaj residue yuav tsum tau soj ntsuam nruj me ntsis ntawm cov roj chromatography kom paub tseeb tias cov khoom kawg yog tsw -dawb thiab ua raws li cov qauv kev nyab xeeb thoob ntiaj teb xws li FDA thiab EU.
Factor 4: Compatibility nrog Barriers zoo li Aluminium Foil
Aluminium ntawv ci yog cov txheej txheem txheej txheej hauv retort ntim cov qauv, tab sis nws qhov kev sib tshuam yog feem ntau ua rau muaj qhov tsis xws luag:
Wettability thiab White Spots: Aluminium foil nto yog ntom thiab tsis yog - ntxeem tau. Cov nplaum yuav tsum muaj qhov ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom.
Kev Tiv Thaiv Corrosion: Cov nplaum nplaum yuav tsum tsis yog tsuas yog kev sib raug zoo nkaus xwb tab sis kuj ua raws li cov ntaub thaiv npog, tiv thaiv cov ntsiab lus los ntawm kev nkag mus rau txheej yas thiab corroding aluminium ntawv ci, uas tuaj yeem ua rau me me pinholes.
Factor 5: Txheej txheem kam rau ua thiab kho kom zoo
Cov nplaum nplaum zoo heev yuav tsum ua kom yooj yim dua, tsis yooj yim dua:
Daim Ntawv Thov Kev Ruaj Ntseg: Tom qab sib tov, cov nplaum nplaum yuav tsum tau maj mam ntxiv kom ntseeg tau tias cov txheej txheej hnyav thoob plaws lub sijhawm ntev ntev (ntev ob peb teev).
Lub Sijhawm Kho: Retort adhesives feem ntau yuav tsum tau kho ntawm ib ncig ntawm 50 degree. Cov nplaum nplaum ua tau zoo tuaj yeem ua tiav tus ntoo khaub lig- txuas cov tshuaj tiv thaiv tsis pub dhau 72 teev, ua kom lub sijhawm ua khoom lag luam luv luv.
Txheej Txheej: Cov lus qhia xaiv cov kws tshaj lij tuaj yeem pab cov neeg tsim khoom ua kom zoo dua cov nqi tsim khoom los ntawm kev tswj hwm qhov hnyav (feem ntau ntawm 3 thiab 4 grams ib square meter) thaum ua kom muaj kev nyab xeeb.
R&D ntawm siab -kub retort ntim yog ib txoj haujlwm ua haujlwm engineering, thiabxaiv cov nplaumyog qhov txuas tseem ceeb tshaj plaws. Cov neeg tsim khoom yuav tsum tsis txhob ntsuas tus nqi nkaus xwb, tab sis yuav tsum ntsuas tus neeg muag khoom lub peev xwm kev txhawb nqa, tshuaj lom neeg ruaj khov ntawm cov khoom, thiab nws lub sijhawm ntev - kev nyab xeeb. Tsuas yog los ntawm kev xaiv kev tshawb fawb tuaj yeem ua kom muaj kev ntseeg siab ntawm cov khoom lag luam hauv kev lag luam hnyav.
