Dab tsi yog Adhesion Strength ntawm UV Screen Printing Ink Ntawm PP Thiab PE?
Jan 29, 2026
Polypropylene (PP) thiab polyethylene (PE) yog siv dav hauv kev ntim khoom, cov khoom siv, cov khoom siv hauv tsheb, thiab cov thawv ntim khoom siv vim lawv cov tshuaj tsis haum, hloov tau, thiab tus nqi qis. Txawm li cas los xij, los ntawm kev xav luam ntawv, lawv yog cov nyuaj tshaj plaws substrates. Ob leeg cov ntaub ntawv muaj nyob hauv tsev neeg polyolefin thiab muaj lub zog qis heev (feem ntau 29–33 dyn / cm), uas ua rau nws nyuaj rau cov inks kom ntub, sib kis, thiab kev sib raug zoo. luam tawm.
Dab tsi txiav txim siab Adhesion Strength?
Adhesion zog yog hais txog lub peev xwm ntawm cov ntaub ntawv kho kom zoo los tiv thaiv tev, khawb, lossis tshem tawm ntawm lub substrate. Rau UV npo luam ntawv inks, adhesion ntawm PP thiab PE nyob ntawm ob qho tib sichemical bondingthiabmechanical anchoring. Vim tias polyolefins yog cov tshuaj inert thiab tsis yog -polar, lawv muab ob peb qhov chaw sib txuas. Yog li ntawd, kev txhim kho adhesion cia siab rau kev ua kom lub zog saum npoo av thiab xaiv cov inks tsim nrog adhesion- txhawb nqa resins.
| Qhov xwm txheej | Kev cuam tshuam ntawm Adhesion rau PP / PE |
|---|---|
| Nto zog theem | Lub zog siab dua txhim kho cov kua nplaum ntub dej thiab kev sib txuas |
| Kev huv ntawm qhov chaw | Cov roj thiab cov pwm tso tawm cov neeg ua haujlwm txo cov adhesion |
| Ink formulation | Tshwj xeeb adhesion resins txhim kho compatibility |
| Curing degree | Tag nrho polymerization ntxiv dag zog rau tus cwj mem zaj duab xis |
| Zaj duab xis thickness | Qhov tuab tuab kom tsis txhob txhuam tsis ua haujlwm |
Yog tsis muaj kev kho deg, lub zog adhesion feem ntau tsis txaus rau kev ua haujlwm ruaj khov.
Hom Adhesion Performance Levels
Adhesion feem ntau yog ntsuas los ntawm kev ntsuam xyuas xws li hla -hatch daim kab xev kuaj (ASTM D3359) lossis tev tsis kam. Ntawm PP thiab PE tsis kho, UV npo inks tuaj yeem ncav cuag0B-2B kev ntsuas, lub ntsiab lus tseem ceeb flaking lossis tev tawm tshwm sim. Tom qab kev kho kom zoo, adhesion tuaj yeem txhim kho4B–5B, qhov twg me me los tsis muaj txheej tshem tawm tshwm sim.
| Substrate condition | Hom Nto Zog | Adhesion Result (Cross-Hatch) |
|---|---|---|
| Tsis kho PP/PE | 29-33 dyn / cm | 0B-2B (tsis zoo) |
| Corona- kho | 38-42 dyn / cm | 3B-4B (mob rau qhov zoo) |
| Nplaim- kho | 40-44 dyn / cm | 4B-5B (zoo rau zoo heev) |
| Plasma- kho | 42+ dyn/cm | 5B (zoo heev) |
Cov txiaj ntsig no qhia tau tias kev ua kom lub ntsej muag yog tus yuam sij kom ua tiav cov adhesion muaj zog.
Txoj Kev Kho Ntog
Molecular Interaction ntawm Ink thiab Kho Nto
Thaum kev kho saum npoo nce polarity, kev sib cuam tshuam ntawm UV number case thiab substrate hloov los ntawm kev siv tshuab ua kom zoo rau kev sib koom ua ke ntawm lub cev thiab tshuaj lom neeg. Kev taw qhia txog cov pa oxygen-muaj cov pab pawg ua haujlwm- xws li hydroxyl, carbonyl, lossis carboxyl pawg- tsim cov chaw ua haujlwm uas txhim kho kev sib txuas ntawm cov hlwb. Thaum UV curing, tus number case polymer network tsim nyob rau hauv intimate kev sib cuag nrog cov activated cheeb tsam, uas ua rau muaj zog interfacial rog. Qhov kev sib raug zoo ntawm molecular no yuav txo tau qhov tshwm sim ntawm delamination nyob rau hauv kev ntxhov siab, hloov kub, lossis raug tshuaj lom neeg.
Txhim kho Wetting ua rau Uniform zaj duab xis tsim
Surface activation ncaj qha cuam tshuam rau tus cwj pwm ntub dej. Ntawm PP lossis PE tsis kho, cov kua dej hauv cov kua dej yuav txo qis los yog hlaws vim lub zog qis qis, ua rau lub hnab ntim huab cua thiab tsim cov tuab tsis sib xws. Tom qab corona, nplaim taws, lossis kev kho ntshav plasma, tus number case kis tau yooj yim dua, ua kom lub ntsej muag microscopic irregularities. Qhov kev ntub dej tsis sib xws no ua kom cov yeeb yaj kiab tuab zoo sib xws, zoo dua qhov muag pom, thiab tsawg dua qhov tsis xws luag xws li pinholes lossis fisheyes. Ib tug zoo-leveled number case zaj duab xis tsis tsuas yog txhim kho gloss tab sis kuj ntxiv dag zog rau cov neeg kho tshuab daim ntawv cog lus tsim tom qab kho.
Txhim kho Mechanical Interlocking ntawm Micro Level
Dhau li ntawm cov teebmeem tshuaj, kev kho deg tuaj yeem tsim kev hloov maj mam micro-roughness uas txhim kho kev sib tshuam ntawm cov tshuab. Tus number case nkag mus rau qhov chaw me me thiab, ib zaug kho, ua lub cev txav mus rau lub substrate. Qhov no ob lub tshuab- tshuaj lom neeg nyiam ntxiv rau cov khoom siv xauv- ua kom muaj zog tiv taus tev, khawb, thiab puas. Hauv cov ntawv thov kev lag luam uas cov ntawv luam tawm muaj kev vibration, tuav, lossis ib puag ncig kev ntxhov siab, qhov cuam tshuam cuam tshuam no ua lub luag haujlwm tseem ceeb hauv kev tswj xyuas lub sijhawm ntev -.
Txheej txheem ruaj khov thiab kev kho mob sib xws
Rau kev ruaj ntseg adhesion, kev kho saum npoo yuav tsum zoo ib yam thiab zoo - tswj. Tshaj - kev kho mob tuaj yeem ua rau lub substrate puas lossis ua rau lub ntsej muag brittleness, thaum nyob hauv - kev kho mob yuav tsis ua kom txaus. Tsis muaj xws li kev kho lub zog, lub sij hawm raug, nyob deb, thiab kab ceev yuav tsum tau optimized rau txhua yam khoom. Kev ntsuam xyuas lub zog saum npoo tsis tu ncua siv dyne cwjmem lossis kev ntsuas lub kaum sab xis pab kom ntseeg tau tias qhov chaw nyob hauv qhov yuav tsum tau ua kom raug tus cwj mem ntub dej. Cov kev kho mob ruaj khov ua rau rov ua dua adhesion kev ua haujlwm hauv ntau lawm.
Kev Tiv Thaiv Adhesion Failure Thaum Kawg -Siv cov xwm txheej
Cov chaw kho kom raug zoo txo qhov kev pheej hmoo ntawm adhesion tsis ua haujlwm thaum siv cov khoom. Yog tias tsis muaj kev kho mob, ib puag ncig yam xws li av noo, kub caij tsheb kauj vab, tshuaj lom neeg, lossis kev ntxhov siab ntawm cov tshuab tuaj yeem ua rau cov xim number case nqa los yog tawg. Kev ua kom lub ntsej muag txhim kho kev sib raug zoo yog li kho UV number case tiv thaiv cov teeb meem no. Qhov no yog qhov tseem ceeb tshwj xeeb hauv kev kos npe rau sab nraum zoov, cov khoom siv hauv tsheb, cov thawv ntim khoom, thiab cov neeg siv khoom siv uas qhov kev ua haujlwm ntev thiab kev pab lub neej ntev yog qhov tseem ceeb.
Ink Formulation thiab Curing Considerations
Tshwj xeeb UV inks tsim los rau polyolefins muaj adhesion txhawb nqa thiab saj zawg zog oligomers uas zoo dua match lub expansion zog ntawm PP thiab PE. Kev kho kom zoo yog qhov tseem ceeb sib npaug. Kev kho tsis tiav yuav txo tau lub zog cohesive nyob rau hauv cov yeeb yaj kiab number case, ua rau ua tsis tiav ntxov txawm tias kev kho deg txaus. LED- UV curing tuaj yeem muab kev tswj hwm lub zog thiab qis cua sov, uas pab tiv thaiv substrate distortion thaum ua kom tag nrho cov polymerization. Qee daim ntawv thov kuj siv adhesion primers nruab nrab ntawm substrate thiab number case los ua kom muaj zog ntxiv.
Yuav ua li cas kom tau txais kev ntseeg siab Adhesion ntawm PP thiab PE?
1: Vim li cas 40 dyn / cm feem ntau suav hais tias yog qhov tseem ceeb ntawm lub zog saum npoo rau PP thiab PE luam ntawv?
Lub zog saum npoo saum npoo ntawm 40 dyn / cm qhia tias lub ntsej muag polyolefin tau ua kom txaus kom tso cai rau cov kua dej kom zoo. Nyob rau theem qis (qis dua ~ 36 dyn / cm), UV number case zoo li hlaws es tsis kis, ua rau muaj kev sib cuag tsis muaj zog thiab tsis zoo molecular attraction. Thaum qhov saum npoo ncav cuag lossis siab tshaj 40 dyn / cm, tus number case tuaj yeem ntws sib npaug thiab sib ze dua ntawm qib microscopic, uas txhim kho van der Waals rog thiab muaj peev xwm sib cuam tshuam. Qhov no ncaj qha nce adhesion lub zog thiab txo qhov kev pheej hmoo ntawm tev lossis ntug nqa.
2: Ntev npaum li cas qhov kev kho deg tseem zoo ua ntej luam ntawv?
Kev kho deg tsis tas mus li. PP thiab PE nto maj mam poob lawv lub zog saum npoo av los ntawm cov txheej txheem hu ua "surface aging" lossis hydrophobic recovery. Nyob ntawm qhov chaw cia khoom, kev ua tau zoo yuav txo qis hauv cov xuab moos mus rau ob peb hnub. Plua plav, av noo, thiab tuav tuaj yeem ua kom qhov kev poob qis no. Rau kev ua tau zoo adhesion zoo tshaj plaws, luam ntawv yuav tsum tshwm sim tam sim ntawd tom qab corona, nplaim taws, lossis kev kho ntshav plasma-feem ntau hauv 24 teev. Hauv siab - daim ntawv thov kev ntseeg siab, lub zog saum npoo yog rov ua dua - sim ua ntej luam tawm kom ntseeg tau tias nws tseem nyob siab tshaj qhov xav tau.
3: Puas muaj zog UV kho ib leeg tuaj yeem them rau qhov tsis zoo?
Tsis yog. Ua kom UV curing zog txhim kho kev sib koom ua ke hauv cov yeeb yaj kiab number case tab sis tsis zoo txhim kho adhesion rau qis -zog substrate. Yog tias qhov sib cuam tshuam ntawm qhov chaw tsis muaj zog, cov kua nplaum txheej tuaj yeem kho tau zoo kawg nkaus tseem tseem tev tawm raws li ib zaj duab xis. Adhesion nyob ntawm qhov sib cuam tshuam ntawm tus number case thiab substrate, uas yuav tsum tau hais los ntawm kev ua kom lub ntsej muag thiab ua tau raws li ink chemistry. Tshaj -kev kho yuav ua rau kom brittleness, ua rau delamination ntau dua nyob rau hauv kev ntxhov siab.
4: Vim li cas UV inks tshwj xeeb rau polyolefins txawv ntawm tus qauv UV inks?
UV inks tsim rau PP thiab PE muaj adhesion- txhawb nqa resins thiab hloov tau yooj yim dua oligomer systems. Polyolefin cov ntaub ntawv tuaj yeem hloov pauv, nthuav dav, lossis cog lus raws li qhov kub thiab txias, yog li tus number case yuav tsum muaj qhov elasticity zoo sib xws kom tsis txhob tawg lossis tawg. Cov inks no kuj yog tsim los kom muaj kev cuam tshuam zoo nrog oxidized nto tsim los ntawm corona los yog nplaim hluav taws. Standard UV inks rau ntawv lossis PVC feem ntau tsis muaj cov yam ntxwv no thiab yuav ua tsis tau qhov kev xeem adhesion ntawm PP / PE.
5: Yuav ua li cas yog adhesion durability txheeb xyuas nyob rau hauv industrial daim ntaub ntawv?
Cov neeg tsim khoom feem ntau siv hla -hatch daim kab xev, kuaj kab mob khawb, thiab kev ntsuam xyuas kev laus ib puag ncig. Cov qauv luam tawm tuaj yeem raug cov av noo, qhov kub thiab txias ntawm kev caij tsheb kauj vab, tshuaj lom neeg, lossis kev puas tsuaj los simulate tiag - ntiaj teb siv. Yog tias tus cwj mem tuav ruaj khov tsis muaj flaking, tawg, lossis xim tsis zoo, lub kaw lus adhesion yog suav tias yog qib- qib. Kev ntsuas kev ua tau zoo sib xws tau lees paub tias qhov kev kho saum npoo, kev tsim cov number case, thiab kev kho tsis zoo yog qhov sib npaug.
6: Puas yog zaj duab xis thickness cuam tshuam rau kev ua haujlwm adhesion?
Yog lawm. Cov yeeb yaj kiab tuab tuab tuaj yeem tsim kev ntxhov siab sab hauv thaum lub sijhawm UV polymerization, uas tuaj yeem txo qhov ntev - lub sij hawm adhesion. Hloov pauv, cov yeeb yaj kiab uas nyias dhau yuav tsis muaj zog txhua yam. Ib tug optimized ink deposit tso cai rau kom yooj, tag nrho curing, thiab ruaj khov kev sib raug zoo. Qhov no yog vim li cas kev xaiv mesh, squeegee siab, thiab luam ntawv tsis yog ib feem ntawm adhesion tswj-tsis yog chemistry xwb.