Hauv kev ntim khoom ntim tau yooj yim, cov txheej txheem lamination ua tiav yog nyob ntawm kev sib koom ua ke zoo tshaj plaws ntawm cov substrates, inks, thiab adhesives. Ntau lub tuam txhab ntsib teeb meem tshwm sim: vim li cas tib cov nplaum ua tau zoo heev ntawm polyester zaj duab xis tab sis yooj yim delaminate ntawm polypropylene zaj duab xis? Los yog vim li cas ntau qhov me me crystalline me ntsis tshwm rau saum npoo tom qab laminating aluminium ntawv ci? Kev xaiv cov nplaum tsis raug tuaj yeem ua rau tsis yog tsuas yog ua rau batch rejection tab sis kuj ua rau muaj kev phom sij loj rau zaub mov. Phau ntawv qhia no yuav tshawb xyuas qhov "tus yam ntxwv" ntawm cov substrates sib txawv thiab muab koj nrog kev tshawb fawb txog kev xaiv nplaum.
Nkag siab cov yam ntxwv ntawm substrate
- PET (Polyester Zaj duab xis): Nrog lub zog siab heev thiab ua haujlwm kub zoo, PET yog qhov zoo tshaj plaws substrate rau luam ntawv. During lamination, due to its dense structure, the adhesive must have strong penetration capability to pass through the ink layer and form molecular-level bonding with the film surface.
- BOPP (Biaxially Oriented Polypropylene Zaj duab xis): Qhov no yog lub tshav kub-sensitive substrate nrog lub zog qis. Yog tias lamination nro yog tswj tsis raug lossis cov nplaum kub kub kub dhau, nws yog qhov ua rau ncab deformation lossis "tunneling" tsis xws luag.
- Aluminium Foil: Raws li tsis yog - ntxeem tau, tsis muaj qhov thaiv qhov chaw substrate, ntawv ci xav tau kev ua haujlwm siab tshwj xeeb los ntawm cov nplaum. Txij li cov ntawv ci saum npoo tuaj yeem muaj cov pinholes microscopic lossis cov roj ua cov khoom seem, cov nplaum yuav tsum sib npaug sib npaug thiab sau cov kab mob me me kom tsis txhob muaj qhov "dawb pob" lossis lwm yam tsis xws luag.
Adhesive Selection Matrix rau Substrate Combinations
|
Kev sib xyaw ntawm substrate |
Cov ntawv thov tseem ceeb |
Pom zoo nplaum |
Qhov tseem ceeb technical focus |
|
PEB // PElos yogCPP |
Puffed zaub mov, detergent hnab ntim |
General -lub hom phiaj ob-cov khoom siv polyurethane nplaum |
Qhov tseem ceeb tsom rau tus number case shear kuj thiab qhov kawg tev lub zog. |
|
PAB // (VMCPP/VMPET) |
Cov khoom ntim khoom ntim, tshuaj yej hnab |
High- clarity hnyav-dawb laminating nplaum |
siab- clarity solventless laminating nplaum yuav tsum tsis txhob corrode aluminium-coated txheej, kom ntseeg tau cov kev khaws cia ntawm cov hlau nplaum. |
|
PEB // PE |
Cov ntawv ntim khoom noj, khoom noj txom ncauj hnab ntim khoom noj |
Economy-qib qhuav laminating nplaum |
Tsom ntsoov rau cov txiaj ntsig ntawm kev lag luam-qib qhuav laminating nplaum tom qab kho ntawm daim coefficient ntawm lub substrate. |
|
PET // Alu ntawv ci // CPP |
Retort hnab rau npaj-rau- noj nqaij thiab ib nrab- npaj zaub mov |
Kev ua haujlwm siab retort ntim PU nplaum |
Tsom ntsoov rau cov tshuaj muaj zog tiv thaiv cov khoom xyaw acidic, siab -cov ntsiab lus roj, thiab capsaicin- muaj cov kua txob ntsim, kom tsis txhob muaj delamination, foob tsis ua hauj lwm, los yog tsw tsiv teb tsaws thaum tsis muaj menyuam thiab cia. |
Peb Lub Ntsiab Lus Qhia Txog Kev Xaiv
Ntog Ntog: Txawm hais tias hom substrate, lub zog saum npoo ua ntej lamination yuav tsum ruaj khov siab tshaj 38-40 dynes. Yog tias qib dyne tsis txaus, cov nplaum tsis tuaj yeem kis tau zoo thoob plaws hauv substrate nto, ua rau kev sib txuas tsis ua haujlwm.
Coating Weight Control : Rau cov substrates uas tsis tshua muaj siab flatness, xws li txhuas ntawv ci, txheej txheej hnyav yuav tsum tau nce nruab nrab (feem ntau yog 0.2-0.5 g / m²) kom ntseeg tau tias cov nplaum zaj duab xis npog tag nrho cov microscopic deg imperfections.
Initial Adhesion (Green Strength) : Lub zog pib adhesion zoo tiv thaiv interlayer misalignment tshwm sim los ntawm substrate recoil, tshwj xeeb tshaj yog tseem ceeb thaum sib khi siab - cov ntaub ntawv nro lossis kev sib txuas nrog qhov sib txawv elastic moduli.
Zam kev tsis sib xws ntawm cov lamination los ntawm substrate
• Hais Tus Cwj Pwm Delamination hauv PET Lamination:
Xaiv tus neeg sawv cev kho kom zoo nrog kev sib raug zoo nrog tus number case resin, thiab xyuas kom meej tias tus number case tau qhuav tag ua ntej lamination los tiv thaiv cov residual hnyav los ntawm kev ua kom tsis muaj zog nplaum.
• Mitigating Slip Additive Migration hauv BOPP:
Slip additives hauv BOPP tuaj yeem txav mus rau qhov sib txuas sib txuas. Peb pom zoo kom txo lub sij hawm kho los yog siv ib qho tshwj xeeb tsiv teb tsaws -cov nplaum nplaum los tuav lub hnab qhib.
• Tiv thaiv cov pob dawb thiab Wrinkles hauv Aluminium Foil Lamination:
nruj me ntsis tswj cov nplaum viscosity thiab xyuas kom muaj qhov ntsuas kub kom zoo nyob rau hauv qhov cub kom qhuav kom tsis txhob hnyav kub kub heev thiab ua npuas.
Kev cuam tshuam ntawm Environmental Factors thiab Post{0}}Processing
• Kho ib puag ncig:
Kev sib txawv ntawm cov substrate ua ke muaj qhov sib txawv ntawm qhov kub thiab txias rau qhov curing chamber. Nws yog feem ntau pom zoo kom tswj qhov kub thiab txias ntawm45℃thiab 55 degreenrog rau huab cua zoo los ua kom cov tshuaj lom neeg hla - txuas cov tshuaj tiv thaiv.
• Cov ntsiab lus cuam tshuam:
Yog tias lub pob muaj cawv, cov roj tseem ceeb, lossis cov khoom noj uas muaj kua qaub heev, yuav tsum tau kuaj xyuas ua ntej txhawm rau tiv thaiv cov nplaum los ntawm degrading thaum lub sij hawm cia, uas tuaj yeem ua rau lub hnab tawg.
Hauv kev lag luam ntim khoom yooj yim, tsis muaj "universal adhesive" uas tuaj yeem daws txhua qhov kev sib tw sib tw. Peb pom zoo kom cov neeg tsim khoom ua qhov chaw sim- ntsuas me me- batch sim thaum ua haujlwm nrog cov yeeb yaj kiab tshiab los xyuas kom meej cov khoom lag luam zaum kawg thiab kev ntseeg tau.
