Yuav Ua Li Cas Nto Pretreatment Txhim Kho Adhesion Ntawm UV Inks Ntawm Polypropylene
May 25, 2026
Polypropylene (PP) Cheebtsam siv nyob rau hauv UV luam ntawv luam tawm tsis tshua muaj zog nto thiab tshuaj inertness. Tsis kho PP qhov chaw tiv thaiv UV number case wetting thiab bonding, ua rau ink delamination thiab qauv poob thaum siv. Cov ntaub ntawv no qhia txog plaub-kauj ruam cov txheej txheem kom ruaj khov UV number case adhesion ntawm PP substrates.
Pretreatment: Ntxuav thiab ua kom lub ntsej muag
Cov kab mob sib kis nrog rau cov pwm tso tawm, roj, thiab plua plav cuam tshuam kev sib txuas ntawm PP thiab UV number case. Ob txoj haujlwm ua ntu zus yuav tsum tau tshem tawm cov kab mob thiab ua kom lub PP nto.
Nto Tu thiab Degreasing
So lub PP nto unidirectionally peb zaug siv cov ntaub ntawv uas tsis yog-woven saturated nrog isopropyl cawv los yog muaj ethanol kom tshem tawm cov pwm tso tawm residues, ntiv tes, thiab particulates. Cua- ziab lub substrate nyob rau hauv ib qho chaw tsis muaj plua plav rau 5 feeb kom tshem tawm cov kuab tshuaj seem.
Kev ua kom lub ntsej muag
Xaiv ib qho ntawm ob txoj hauv qab no los ua kom PP nto zog.
- Kev Kho Mob Plasma
Siv 500 W plasma kho. Luam theej duab saum npoo ob zaug ntawm qhov chaw ua haujlwm ntawm 5-10 mm. Ua kom tiav luam ntawv tsis pub dhau 30 feeb kom tsis txhob muaj zog ntog.
- PP Adhesion Promoter Txheej
Siv cov txheej nyias nyias ntawm PP- tshwj xeeb adhesion txhawb nqa ntawm cov tshuaj tsuag. Cua- ziab ntawm qhov kub thiab txias rau 10 feeb kom txog thaum cov yeeb yaj kiab ua tiav ua ntej luam ntawv.
Kev xaiv cov khoom: PP-Specific UV Ink
Standard UV inks tsis tsim cov tshuaj tiv thaiv ruaj khov nrog qhib PP. Siv PP-formulated UV number case uas nkag mus rau microstructures ntawm lub tshuab ua kom lub ntsej muag thiab crosslinks thaum kho.
PP-tshwj xeeb UV lub hauv paus tsho yuav raug siv ua ntu zus los txhim kho tus cwj mem anchoring thiab xim uniformity.
PP-tshwj xeeb UV lub hauv paus tsho yuav raug siv ua ntu zus los txhim kho tus cwj mem anchoring thiab xim uniformity.
Parameter Tuning: Printing thiab Curing Optimization
Qhov tsis raug curing tsis ua rau ink shrinkage thiab ntug lifting. Tswj tus number case zaj duab xis thickness thiab curing profile raws li hauv qab no.
Printing Parameters
Siv ib tug multi-pass, nyias-txheej luam ntawv hom nrog yam tsawg kawg nkaus number case tawm. Teem tag nrho cov number case zaj duab xis thickness rau 20-30 μm. Txo tus number case ntim los ntawm 10% ntawm ntug cheeb tsam kom tiv thaiv kev tsim.
Siv lub tsho nyias nyias UV thiab kho ua ntej nrog lub zog hluav taws xob qis UV rau 3 vib nas this ua ntej xim luam ntawv.
Siv lub tsho nyias nyias UV thiab kho ua ntej nrog lub zog hluav taws xob qis UV rau 3 vib nas this ua ntej xim luam ntawv.
Stepwise Curing
Siv ob-theem curing kom tsis txhob thermal deformation thiab tsis tiav crosslinking.
- Kev kho ua ntej: 50% UV fais fab rau 5 vib nas this los pib ink crosslinking.
- Kev kho mob tag nrho: 100% UV zog rau 8-10 vib nas this siv 395 nm LED UV teeb.
Khaws PP nto kub hauv qab 60℃thaum kho kom tsis txhob muaj qhov hloov pauv.
Tom qab Kev Kho Mob: Daim Ntawv Thov UV Overcoat
Tom qab tag nrho cov ink curing, thov ib tug nyias abrasion-resistant UV overcoat. Kho ntawm 100% UV zog rau 6 vib nas this.
Lub overcoat muab kev tiv thaiv lub cev thiab thaiv cov dej noo thiab oxygen kom ntev kev pab cuam lub neej.
Lub overcoat muab kev tiv thaiv lub cev thiab thaiv cov dej noo thiab oxygen kom ntev kev pab cuam lub neej.
Adhesion Verification
Ua qhov kev kuaj hla-txiav thiab ntsuas ntiv tes txhawm rau txheeb xyuas qhov adhesion.
- Siv tus ntoo khaub lig-txiav tester los tsim 10 × 10 daim phiaj ntawm 1 mm² squares.
- Siv 3M 600 daim kab xev thiab tev ntawm 45 degree.
- Kev lees txais cov qauv: number case poob<5% of total grid area.
- Tsis muaj lifting los yog delamination yuav tsum tshwm sim nyob rau hauv ruaj khov ntiv tes scraping ntawm tus qauv npoo.
Core Mechanism: Yog vim li cas Pretreatment txiav txim siab ntev Adhesion
Tsis kho polypropylene nta cov qauv tsis-polar molecular nrog xoom nquag hydroxyl lossis carboxyl pawg ntawm qhov chaw. Cov tshuaj inertness no tiv thaiv txhua yam kev cuam tshuam thiab tshuaj lom neeg sib txuas nrog UV number case molecules. Kev ntxuav cov kuab tshuaj tshem tawm cov kab mob ntawm cov kab mob, thaum cov plasma lossis cov kev kho mob txhawb nqa tsim cov micro- ntxhib ntxhib ntxhib ntxhib los mos thiab cov pab pawg polar functional ntawm PP nto. Cov kev hloov kho microstructures no tso cai rau cov kua UV number case kis tau tusyees, tshem tawm cov kab noj hniav, thiab ua kom nruj mechanical anchoring tom qab UV crosslinking. Tsis muaj kev kho mob ua ntej, UV number case tsuas yog ua rau lub cev txuas ntxiv, uas maj mam tshem tawm hauv qab kev sib txhuam, kub caij tsheb kauj vab, thiab qhov chaw ntub dej.
Cov txheej txheem tseem ceeb txwv thiab kev ua haujlwm taboos
Rov qab so thaum lub sij hawm ntxuav yuav rov faib cov roj paug thiab ua rau ib feem ntawm tus number case tev. Cov neeg ua haujlwm yuav tsum ua raws li ib qho -txoj kev wiped strokes kom ntseeg tau tias qhov huv si zoo ib yam. Plasma activation muab sij hawm-sensitive nto zog; ib qho kev luam ntawv ncua ntev tshaj 30 feeb yuav ua rau saum npoo polarity attenuation thiab txo cov kev sib raug zoo. Rau adhesion txhawb kev kho mob, tsis sib npaug los yog txheej tuab heev yuav ua rau hauv qab txheej tawg thiab qauv txiv kab ntxwv tev tsis xws luag tom qab kho.
Thaum UV curing, txuas ntxiv siab -lub zog irradiation yam tsis tau ua ntej -kho ua rau lub ntsej muag sai sai. Cov txheej txheej txheej txheej tag nrho crosslinks thaum txheej txheej sab hauv tseem tsis kho, ua rau muaj kev ntxhov siab sab hauv uas ua rau ntug warping thiab nplua tawg. Cov txheej txheem kho cov txheej txheem nruj kom tshem tawm cov kev sib txuas tsis sib xws.
Cov Txheej Txheem Ntau Lawm Zoo Tswjhwm
Nyob rau hauv tas li batch ntau lawm, tsis tu ncua adhesion sampling yog yuav tsum tau. Cov neeg tsim khoom yuav tsum ua tus ntoo khaub lig- txiav cov adhesion xeem txhua 500 daim tiav los saib xyuas kev ruaj khov. Lub rooj cob qhia ntau lawm yuav tsum tswj cov av noo tas li ntawm 40% -60% txhawm rau txo cov plua plav zoo li qub thiab tsis txhob muaj qhov sib kis ntawm qhov chaw. Tag nrho cov PP workpieces yuav tsum tau muab luam tawm thiab kho tam sim ntawd tom qab pretreatment kom ua tiav qhov kev siv ntawm qhov chaw.
Accelerated Aging Performance Test Standard
Txhawm rau txheeb xyuas sab nraum zoov thiab ntev - lub sijhawm ua haujlwm ruaj khov, cov khoom lag luam PP tiav yuav tsum dhau qhov kev ntsuas kev laus ib puag ncig. Cov qauv tsim nyog tau muab tso rau hauv qhov ntsuas kub thiab av noo tas li ntawm 85℃thiab 85% txheeb ze av noo rau 240 teev ntawm kev laus tsis tu ncua. Tom qab kev ntsuam xyuas, txheej number case yuav tsum tsis muaj blistering, delamination, cracking los yog pom tseeb fading. Tus ntoo khaub lig- txiav adhesion xeem tseem tuav tus lej poob qis dua 5%, ua kom muaj kev ruaj ntseg rau cov khoom siv sab nraum zoov, hluav taws xob vaj tse, thiab cov khoom siv yas.
