Dab tsi yog qhov sib txawv ntawm cov txheej txheem ntawm kev siv lub tshuab laminating tsis muaj kuab lom los laminate cov khoom sib txawv?

Solvent-dawb laminating tshuab, raws li cov thev naus laus zis thev naus laus zis ntawm niaj hnub hloov pauv tau yooj yim ntim, tuav txoj haujlwm tseem ceeb hauv kev ntim khoom noj, tshuaj thiab kev lag luam tshuaj txhua hnub, nrog rau nws qhov zoo ntawm xoom hnyav emissions, kev ua haujlwm siab thiab zoo heev laminating zoo. Txawm li cas los xij, cov khoom ntawm lub cev thiab tshuaj lom neeg ntawm cov khoom sib txawv yog qhov sib txawv heev, yog li nyob rau hauv cov txheej txheem ntawm cov kuab tshuaj dawb laminating, lub hom phiaj kev kho yuav tsum tau ua nyob rau hauv cov ntsiab lus tseem ceeb xws li txheej txheej, kev tswj nruj thiab kev kho mob. Hauv daim ntawv no, kev sib txawv ntawm cov kuab tshuaj -cov tshuab ua haujlwm pub dawb hauv cov ntaub ntawv sib txawv tau tham txog kev ua haujlwm los ntawm peb yam: kev faib cov khoom vaj khoom tsev, kev ua kom zoo dua ntawm cov txheej txheem thiab kev daws teeb meem raug.
1.Txoj cai rau kev faib cov yam ntxwv ntawm cov khoom siv thiab cov txheej txheem Kho kom haum
Muaj ntau cov ntaub ntawv tsim nyog rau cov txheej txheem laminating tsis muaj kuab lom, suav nrog cov yas (xws li BOPP, PET, NY, PE, CPP), hlau foils (aluminium foil), ntawv-raws li substrate thiab txheej txheej (xws li VMPET, VMCPP). Nyob ntawm lawv qhov kev ua tau zoo sib txawv, cov ntaub ntawv no tuaj yeem muab faib ua peb pawg dav:
Rigid Substrates: suav nrog PET, BOPP, NY, VMPET, cov ntaub ntawv no muaj kev hloov pauv siab, tsis tshua muaj elongation, rhiab heev rau kev hloov pauv ntawm qhov nro, thiab yuav tsum tau tswj xyuas cov txheej txheem laminating nruj me ntsis.
Saj zawg zog substrates: xws li PE, polypropylene, CPP, thiab lwm yam., uas muaj elongation siab thiab tsis tshua muaj zog nto thiab yog nquag wrinkling los yog tunneling vim tsis sib haum.
Cov Substrates tshwj xeeb: Aluminium ntawv ci yog nyias thiab tsis yooj yim, yuav tsum tau qis - nro laminating; daim ntawv substrate yog absorbent heev thiab yuav tsum tswj ntawm ambient humidity kom tsis txhob muaj kev hloov loj.
Lub hauv paus ntsiab lus tseem ceeb ntawm cov txheej txheem hloov pauv yog 'cov khoom siv nruj raws li, cov khoom siv tau yooj yim ntxiv'. Tshwj xeeb tshaj yog, cov ntaub ntawv nruj feem ntau yog siv los ua thawj lub hauv paus tsis sib haum, thiab lawv qhov nro yog teem siab dua li cov ntaub ntawv hloov tau los xyuas kom muaj kev ruaj ntseg thaum lub sij hawm laminating txheej txheem. Cov ntaub ntawv hloov tau yooj yim, raws li cov txheej txheem thib ob unwinding substrates, yuav tsum tau siv cov khoom siv nruj nreem los cuam tshuam lawv qhov sib txawv elongation. Piv txwv li, nyob rau hauv ib tug PET / PE laminated qauv, PET nro feem ntau yog teem ntawm 7-15N, thaum PE nro yog tswj ntawm 1.5-2.5N los tiv thaiv PE txheej los ntawm overstretching thiab ua rau lub laminated zaj duab xis rau curl.
2. Sib txawv tswj cov txheej txheem tseem ceeb
2.1 Txheej Qhov hnyav tswj
Txheej qhov hnyav yog qhov tseem ceeb ntawm cov tsis muaj kuab lom laminating, uas ncaj qha cuam tshuam rau lub zog laminating, tus nqi thiab qhov zoo ntawm qhov zoo. Rau kev sib xyaw ua ke ntawm cov khoom sib txawv, qhov hnyav ntawm cov txheej txheem sib txawv:
Cov qauv ntim khoom hnyav (xws li BOPP / CPP): txheej hnyav yog nruab nrab ntawm 1.2 g / m2 thiab 1.2 txog 1.8 g / m2 kom txo cov nqi adhesion.
Heavy los yog kub distillation ntim cov qauv (xws li PET / AL / CPP): txheej hnyav yuav tsum tau nce mus rau 2.5-3.5 g / m2 kom ntseeg tau tias tev lub zog ntawm qhov kub thiab txias.
Metallized zaj duab xis laminating (xws li VMPET / PE): Cov nplaum tshwj xeeb yuav tsum tau siv thiab txheej hnyav tswj 1.5-2.2 g / m2 los tiv thaiv kev hloov hlau.
Qhov hnyav ntawm txheej yog kho los ntawm kev ntsuas qhov sib txawv ntawm cov yob thiab lawv qhov sib piv ceev. Piv txwv li, txheej txheej hnyav ntawm 1.5 g / m2 tuaj yeem ua tiav los ntawm kev kho qhov sib txawv ntawm qhov ntsuas yob mus rau 80 μm thiab teeb tsa qhov kev sib hloov ceev rau 1: 1.2. Tsis tas li ntawd, qhov hnyav ntawm cov ntawv luam tawm thiab cov ntawv tsis tau luam tawm yuav tsum tau teeb tsa sib txawv: vim tias cov xim txheej ntawm cov ntawv luam tawm absorbs ib feem ntawm cov nplaum, cov txheej txheej hnyav yuav tsum tau nce los ntawm 0.3-0.5 g / m2 kom them nyiaj rau kev nkag mus.
2.2 Kev Tswj Kev Nyuaj Siab
Kev tswj nruj yog ib qho teeb meem nyuaj hauv kev ua kom tsis muaj kuab lom laminating, thiab nws qhov tseeb ncaj qha cuam tshuam qhov flatness thiab tev lub zog ntawm cov zaj duab xis sib xyaw. Cov tswv yim tswj kev nruj rau cov khoom sib txawv ua ke yog raws li hauv qab no:
Yas-rau- yas laminating (xws li BOPP / PE): Segmented nro tswj yog siv, thawj unwinding nro yog me ntsis siab tshaj tom qab-txheej txheej nro, thiab coil nro yog ib tug tapered txo (cone tsawg dua los yog sib npaug li 20%) los tiv thaiv core wrinkling.
Daim ntawv-cov ntaub ntawv yas sib xyaw: Daim ntawv- cov ntaub ntawv yas sib xyaw yog qhov nkag siab rau cov av noo thiab xav tau ntau lawm ntawm cov av noo tsawg dua lossis sib npaug li 60%. qis- nro laminating ntawv nro Tsawg dua lossis sib npaug li 3 N / m) zam qhov hloov pauv loj thiab npuas vim yog nqus dej noo.
Aluminium ntawv ci lamination: Aluminium ntawv ci yog nyias nyias (feem ntau yog 7-9 μm) thiab yuav tsum muaj kev sib zog tsis sib haum (nruj tsawg dua lossis sib npaug li 1.5 N / m) thiab siab precision qhia yob (parallelism yuam kev tsawg dua lossis sib npaug li 0.05 mm) los tiv thaiv kev tawg lossis wrinkling.
Tiag - lub sijhawm saib xyuas thiab kev hloov kho ntawm kev tswj nruj yog qhov tseem ceeb. Ib lub tuam txhab tau teeb tsa cov ntsuas qhov nrawm hauv ntu laminar thiab ua ke nrog lub kaw - lub voj voog tswj kom tsis txhob muaj qhov sib txawv ntawm qhov nro mus rau ± 0.5N, ua rau kom qhov flatness ntawm laminar zaj duab xis.
2.3 Cov txheej txheem kho kom zoo
Cov kuab tshuaj-dawb cov kua nplaum uas tsis muaj kuab tshuaj yog kev sib txuas ntawm cov tshuaj lom neeg, thiab kev tswj qhov kub thiab lub sijhawm yuav tsum tau hloov kho raws li cov khoom siv:
Rau kev ntim khoom dav dav (xws li BOPP / CPP): kho qhov kub ntawm 35-40℃rau 24 teev, ua tau raws li qhov yuav tsum tau muaj zog tev.
Siab -kub distillation ntim (xws li PET / AL / CPP): Cov nplaum nplaum yuav tsum tau siv sai, nrog rau qhov kub thiab txias nce mus rau 45-50℃thiab lub sij hawm luv luv rau 12 teev, los tiv thaiv cov nplaum nplaum los ntawm qhov kub thiab txias.
Metallized zaj duab xis lamination: Tsawg kub (tsawg dua los yog sib npaug li 30 degree) yuav tsum tau thaum lub sij hawm pib kho kom tsis txhob hlau txheej poob vim thermal expansion; qhov kub thiab txias maj mam nce mus rau 40℃thaum lub sij hawm nruab nrab theem kom yooj yim cross-txuas kev cuam tshuam.
Kev tswj cov av noo hauv ib puag ncig kev txuag kuj tseem ceeb. Ib leeg- cov nplaum nplaum cia siab rau cov dej noo hauv huab cua kom khov. Yog hais tias ambient humidity tsawg tshaj li 40%, ib tug sprayer yuav tsum tau siv rehydrate; ob-cov nplaum nplaum yuav tsum tau tswj cov av noo nruj heev (40-60%) los tiv thaiv cov nplaum nplaum los ntawm kev nkig vim qhov nqus dej.
3. Cov txheej txheem kev tshawb fawb ntawm cov khoom sib xyaw ua ke
3.1 PET/AL/CPP Retort Ntim Structure
Cov qauv yuav tsum muaj peev xwm ua tau siab -kub retorting ntawm 121℃rau 30 feeb, uas ua rau muaj kev xav tau siab ntawm cov cua sov ua haujlwm thiab txheej hnyav ntawm cov nplaum. Qhov tseem ceeb ntawm cov txheej txheem optimization muaj xws li:
Adhesive Selection: Two-component polyurethane adhesives has the advantages of high crosslinking density and excellent heat resistance.
Txheej hnyav tswj: 2.8 g / m2 rau PET / AL txheej thiab 3.0 g / m2 rau AL / CPP txheej, kom ntseeg tau interlayer adhesion ntawm qhov kub thiab txias.
Kev kho cov txheej txheem: Kev kho yog ua tiav hauv theem: 4 teev ntawm 35℃rau 4 kho, 8 teev ntawm 45℃rau 8 curing, thiab 12 teev ntawm 50℃rau 12 curing kom tsis txhob brittleness ntawm cov nplaum txheej.
Kev tswj nruj: 12N rau PET, 12 N rau ntawv ci thiab 2.0N rau CPP los tiv thaiv cov ntawv ci los ntawm kev tawg lossis CPP ncab.
3.2 VMPET/PE Hlau Laminating Structure
Metallized zaj duab xis laminating yog qhov ua rau muaj teeb meem xws li hlau txheej hloov chaw thiab cov pob dawb, uas yuav tsum tau ua raws li cov txheej txheem kev hloov kho:
Adhesive Selection: metallized films siv cov nplaum tshwj xeeb, molecular hnyav faib yog nqaim, thiab adhesion nrog hlau txheej muaj zog.
Txheej hnyav tswj: txheej hnyav yog tswj 1.8-2.2 g / m2 kom tsis txhob poob ntawm cov hlau txheej detachment vim tsis txaus adhesion.
Laminating: Lub siab ntawm lub laminate roller yog nce mus rau 0.4 MPa los pab txhawb kev nkag mus ntawm cov nplaum rau hauv cov porosity ntawm cov hlau txheej.
2. Kev tswj ib puag ncig: cov av noo ntawm qhov chaw tsim khoom yog khaws cia ntawm 50% txhawm rau tiv thaiv oxidation ntawm cov hlau txheej.
3.3 Ntawv-Raws li substrate thiab yas zaj duab xis laminating Structure
Daim ntawv -yas laminating yuav tsum tau daws cov teeb meem ntawm daim ntawv ya raws absorption deformation thiab nplaum nkag:
Kev kho ua ntej-Kev kho: Daim ntawv yuav tsum tau kho corona (qhov nro saum npoo Ntau dua lossis sib npaug li 38 mN / m) nrog tsawg dua lossis sib npaug li 8% cov ntsiab lus noo noo.
Adhesive Selection: siv ib qho sib xyaw ua ke moisturizing nplaum, nws qhov ceev ceev tuaj yeem sib phim nrog qhov nqus dej ntawm daim ntawv.
Kev tswj qhov hnyav: Qhov hnyav ntawm cov txheej yog nruab nrab ntawm 2.0 thiab 2.5 2.0-2.5 g / m2 kom them nyiaj rau kev nqus ntawm cov nplaum los ntawm qhov pores ntawm daim ntawv.
Kev tswj nruj: daim ntawv nro Tsawg dua lossis sib npaug li 3 Tsawg dua lossis sib npaug li 3 N / m, qis- nro laminating, qeeb ntau lawm (kab ceev Tsawg dua lossis sib npaug li 150 m / min) kom tsis txhob muaj ntawv tawg.
4. Txheej txheem Optimization Trends thiab yav tom ntej Outlook
Nrog rau kev nce qib hauv cov ntaub ntawv tshawb fawb thiab khoom siv thev naus laus zis, cov txheej txheem laminating tsis muaj kuab lom tau txav mus rau cov txheej txheem ua haujlwm tau zoo dua, txawj ntse, thiab ua haujlwm:
Ultra-siab- ceev laminating: Cov kab ceev ntawm lub cuab yeej tau nce los ntawm 400m / min mus rau 800m / min, yuav tsum muaj kev tswj xyuas nruj nruj thiab ceev ceev curing nplaum.
Kev txawj ntse tswj: Ib qho kev tshawb nrhiav hauv online raws li lub tshuab tsis pom kev tuaj yeem saib xyuas qhov hnyav, nruj thiab laminate zoo ntawm cov txheej txheem ntawm lub sijhawm siv cov cuab yeej txawj ntse algorithms thiab hloov kho cov txheej txheem tsis raug.
Functionalized laminating: Tsim cov nplaum tshwj xeeb thiab cov txheej txheem laminating ua ke rau cov ntaub ntawv degradable xws li PLA, suav nrog cov teeb meem siab, tshuaj tua kab mob thiab cov ntawv sau ntse.
Kev sib tw ua kom tiav: Txhawm rau ua kom tau raws li qhov xav tau ntawm laminating rau cov yeeb yaj kiab ultrathin tsawg dua 8 microns tuab, cov txheej txheem txheej txheej thiab cov txheej txheem nruj yuav tsum tau ua kom zoo los tiv thaiv cov yeeb yaj kiab tawg.
V. Xaus:
Cov tshuab laminating tsis muaj kuab tshuaj yuav tsum tau ua kom zoo dua cov txheej txheem hnyav, tswj nruj thiab kho cov txheej txheem raws li cov khoom sib txawv. Los ntawm kev tswj xyuas cov txheej txheem tsis raug thiab kev ua pov thawj ntawm cov teeb meem raug, qhov kev ruaj ntseg zoo thiab kev ua haujlwm ntawm laminates tuaj yeem txhim kho tau zoo. Nyob rau hauv lub neej yav tom ntej, nrog kev koom ua ke ntawm cov cuab yeej ntse thiab cov khoom siv ua haujlwm, cov txheej txheem tsis muaj laminating yuav ua lub luag haujlwm ntau dua hauv kev ntim ntsuab.