Siv Liquid Silicone Rubber hauv Screen Printing
Txheej txheem cej luam
Liquid Silicone Rubber (LSR) yog revolutionizing npo luam ntawv los ntawm kev ua kom ncaj, siab - durability luam ntawv ntawm silicone inks mus rau textiles (tshwj xeeb yog kev ua tau zoo hnav) thiab cov khoom siv. Tsis zoo li plastisol lossis dej-raws li inks, LSR kho rau hauv cov txheej txheem silicone uas hloov tau yooj yim.
Cov txiaj ntsig tseem ceeb rau Screen Printing
Unmatched stretch & rov qab:Withstands rov ncab ntawm cov ntaub zoo li Spandex thiab polyester.
Ntxuav durability:Cov adhesion zoo heev uas muaj sia nyob hauv kev lag luam / tsev ntxhua khaub ncaws.
Mos tes hnov:Khaws cov ntaub drape thiab kev nplij siab.
Thaum tshav kub kub, UV & tshuaj tiv thaiv:Rau kev siv thiab sab nraum zoov.
Cov teebmeem 3D / puff:Nws tuaj yeem luam tawm hauv cov txheej tuab yam tsis muaj kev tawg.
Cov Khoom Siv & Cov Khoom Siv Xav Tau
1. LSR Ink System
Ob -Part Ink:Base (Part A) thiab Catalyst (Part B).Tsis txhob siv ib qho - cov khoom RTV silicone.
Hom Hom:
Ntxiv -Kho LSR:Platinum catalyst. Feem ntau, odorless, tsawg shrinkage.Poisoned los ntawm sulfur, tin, thiab ib co amines- kom deb ntawm qee cov ntaub / nplaum.
Condensation -Kho LSR:Tin catalyst. Tsawg rhiab heev rau kev lom tab sis qeeb kho.
Ua ntej-mixed vs. Self-mixing:Ua ntej- sib xyaw (hauv syringes/cartridges) yog qhov zoo tshaj plaws rau cov pib tshiab thiab sib xws.
2. Kev xav tau ntawm Screen
Mesh suav:43-90 threads / nti (110-230 mesh) rau txheej txheem txheej. Tsawg li 24T (60 mesh) rau cov khoom hnyav.
Emulsion:Siv ahnyav-resistant, siab-hardness emulsion(xws li cov yeeb yaj kiab capillary) tuaj yeem tiv taus silicone cov ntsiab lus hnyav.
Screen Tension:Siab zog (20-30 N / cm) pom zoo rau kev tso tawm ntse.
3. Cov khoom siv tseem ceeb
Precision Digital Scale(0.1g qhov tseeb) rau kev sib xyaw 2-ntu inks.
Static Mixer Nozzles & Cartridge Phomyog tias siv cov tshuab cartridge.
Infrared lossis Forced -Air Heat Tunnel. Kev kho yog cua sov- qhib, tsis yog cua- qhuav.
Squeegees:70-80 durometer rau zoo number case deposit.
Tsis yog - ntxeem tau, tsis yog - nplaum ua hauj lwm nto(piv txwv li, daim ntawv silicone, PTFE).
Kauj Ruam -los ntawm - Kauj Ruam Kev Luam Ntawv
Theem 1: Kev Npaj
Kev npaj substrate:
Npuag yuav tsum yoghuv si thiab pob txha- qhuav. Ua ntej- cua sov kom tshem tawm cov dej noo yog xav tau.
Synthetic fabrics (polyester, nylon, elastane) ua haujlwm zoo tshaj plaws. Ntsuam xyuas cov fibers ntuj ua ntej.
TSEEM CEEB:Xyuas kom tsis muaj leej faj-raws li stabilizers los yog tiav ntawm cov ntaub (ua rau kho inhibition).
Ink Mixing & Pot Life:
Ntsuas qhov A thiab B yog qhov tseeb(feem ntau yog 1: 1 piv, kos daim ntawv tech).
Sib tovkom huv sirau 3-5 feeb, scraping sab.Tsis txhob nplawm cua rau hauv tus cwj mem.
Lub neej lauj:Thaum sib tov, koj feem ntau muaj30 feeb mus rau 4 teevntawm lub sijhawm ua haujlwm ua ntej viscosity nce. Npaj cov ntawv luam tawm raws li.
Kev teeb tsa Screen:
Siv txaus tawm -kev tiv tauj (3-6mm).
Lub vijtsam ruaj ntseg kom tsis txhob txav mus los thaum luam ntawv.
Theem 2: Kev luam ntawv
Kev luam ntawv:
Siv adej nyabtiam afirm print stroke.
LSR muaj viscosity siab -tsis txhob maj. Cia mesh tso tus number case tag nrho.
Rau ntau txheej (flocking, 3D), uantub- ntawm- ntubluam tawm ua ntej kho.
Kauj Ruam 3: Kev Kho Mob (KHOV TSEEM CEEB TSHAJ PLAWS)
Curing Parameters:
Kub:Feem ntau120℃- 150℃(250℃F - 300℃F).
Sijhawm: 1 rau 3 feebntawm qhov kub thiab txias (nyob ntawm tus number case thickness).
Lub substrate yuav tsum ncav cuag qhov kub thiab txias.Siv IR ntsuas kub los kuaj xyuas.
Hauv qab -kho tus cwj memyuav tacky thiab tsis muaj adhesion.Tshaj - khotuaj yeem ua rau nws tawg.
Txoj kev kho:
Thaum tshav kub kub Tunnel/Conveyor Dryer:Zoo tagnrho rau cov txiaj ntsig zoo ib yam.
Thaum tshav kub kub xovxwm:Zoo rau cov khoom me me los yog ua piv txwv. Siv ib daim ntawv Teflon.
Cua kub phom:Rau qhov kho qhov muag lossis kho tsuas yog- tsis yog rau kev kho tag nrho.
Cov ntawv thov tshwj xeeb
Tsim 3D/Raiseed Effects
Siv aqis mesh suav(24-43T) thiab atuab emulsion stencil.
Sau ntau daim ntub dej - ntawm - ntub hla dhau los ua qhov siab.
Kho tag nrho -cov txheej tuab yuav tsum tau siv sijhawm ntev dua me ntsis.
Flocking nrog LSR
Sau LSR txheej.
Tam sim ntawdthov flock fibers (electrostatic flocking phom ua haujlwm zoo tshaj) thaum tus number case ntub dej.
Cia cov fibers embed, ces maj mam invert kom tshem tawm tshaj.
Kho li qub. Cov pab yaj yuav embedded mus tas li.
Txoj kev daws teeb meem
| Teeb meem | Tej yam ua rau | Kev daws |
|---|---|---|
| Tacky, tus cwj mem tsis kho | 1. Kho kub qis heev 2. Kho lub sij hawm luv heev 3. Kho inhibition(sulfur / amine lom) |
1. Txheeb xyuas qhov cub kub nrog tus pas ntsuas kub. 2. Nce lub sij hawm. 3. Ntsuas cov substrate sib txawv los yog siv aprimer / barrier tsho tiv no. |
| Tsis zoo adhesion | 1. Substrate contamination (roj, tiav) 2. Hauv qab - kho 3. Hom substrate yuam kev |
1. Ntxuav substrate nrog IPA. 2. Xyuas kom muaj kev kho mob tag nrho. 3. Siv LSR-formulated adhesion promoter. |
| Ink tuab dhau los luam tawm | 1. Lub lauj kaub lub neej tas sij hawm 2. Qhov chaw txias |
1. Sib tov cov khoom me me. 2. Cov ntawv sov so rau 25℃(77℃F) ua ntej siv.Tsis txhob ntxiv cov thinners. |
| Npuas hauv luam | Cua incorporated thaum sib tov | Sib tov maj mam, cia tus number case degas ua ntej luam ntawv. Siv lub tshuab nqus tsev vacuum yog tias hnyav heev. |
| Screen clogging | Ink curing nyob rau hauv mesh (yuam qhuav luam ntawv, kub ib puag ncig) | Ua hauj lwm sai dua, khaws cov tshuaj ntsuam kom deb ntawm tshav kub, siv tshuaj ntsuam retarder los yogtxias lub phaj. |
Kev Nyab Xeeb & Kev Tu
Qhov cua:Xyuas kom zoo airflow. Thaum LSR qis -VOC, qhov cub kho yuav tsum tau muab tso rau.
Tiv tauj daim tawv nqaij:Hnav hnab looj tes nitrile. Cov khoom uas tsis tau kho tuaj yeem ua rau khaus.
Screen Reclaiming:Sivtshwj xeeb silicone number case reclaimerstam sim ntawd tom qab luam ntawv. Thaum kho tag nrho, silicone yuav luag tsis tuaj yeem tshem tawm ntawm mesh.
Cia:Khaws Ntu A thiab Bkawthiab hauv atxias, qhuav qhov chaw. Cov dej noo tuaj yeem rhuav tshem cov catalyst.
Pro Cov Lus Qhia rau Kev Ua Tau Zoo
Ib txwm khiav ib daim ntawv ntsuam xyuasthiabntxuav tes(ISO 105-C06 lossis AATCC 61) ua ntej tag nrho cov khoom.
Cov ntaub ntawv parameter:Nco ntsoov sib tov lub sij hawm, kho temp / sij hawm, thiab cov txiaj ntsig rau qhov sib xws.
Pib nrog tus neeg muag khoom lub khoom pib(xws li los ntawm Polytek, Silicone Engineering, lossis NuSil) uas suav nrog tus cwj mem, tshuaj ntxuav, thiab cov lus qhia ntxaws.
Rau textiles, LSR ua haujlwm zoo tshaj plaws rauhluavtaws kev ua haujlwm fabricstsim rau activewear.
LSR npo luam ntawv muaj qhov kev kawm nkhaus ntau dua li cov tshuaj pleev ib ce, tab sis qhov ua tau zoo thiab kev ua tau zoo ntawm cov khoom tiav ua rau nws tseem ceeb rau qib siab -kho khaub ncaws, tsheb sab hauv, thiab khoom siv kho mob. Pib nrog cov kev sim me me, tswj xyuas kom muaj kev sib xyaw thiab kho ua ntej tackling txoj haujlwm nyuaj.