一, Kudhindwa kwechikafu flexible packaging materials
①Kuprinda nzira
Chikafu chinochinjika kurongedza kudhinda kunonyanya kudhinda uye flexographic printing, inoteverwa nekushandiswa kweflexographic printing muchina kudhinda epurasitiki firimu (flexographic printing machine uye yakaoma composite muchina kazhinji inoumba mutsara wekugadzira), asi kune misiyano yakawanda ichienzaniswa neyakajairwa gravure kudhinda uye. flexographic kudhinda kunoshandiswa mukushambadzira uye kudhinda kwezvinhu.Semuenzaniso, flexible packaging printing inoitwa pamusoro peiyo roll-shaped substrate.Kana iri firimu rakajeka, muenzaniso unogona kuonekwa kubva kumashure, uye dzimwe nguva jira repende jena rinoda kudhindwa, kana nzira yekudhinda yemukati inoshandiswa.
②Tsanangudzo yemukati yekudhinda maitiro
Kudhinda kwemukati kunoreva nzira yekudhinda yakakosha inoshandisa ndiro yekutsikirira yemufananidzo wakadzokera kumashure kuendesa ingi kudivi remukati rezvakajeka zvekudhinda, kuitira kuratidza mufananidzo wakanaka pamberi pechinhu chakadhindwa.
③Zvakanakira zveIndia
Kuenzaniswa nepamusoro pezvigadzirwa zvakadhindwa, zvinhu zvemukati zvakadhindwa zvine zvakanakira kupenya uye kwakanaka, kupenya kwemavara / kukurumidza, kunyorova uye kupfeka kusagadzikana;Mushure mekudhindwa kwemukati, iyo inki layer inoiswa pakati pezvikamu zviviri zvefirimu, izvo zvisingazosvibisa kurongedza.
二, Inoumbwa yezvikafu flexible packaging materials
①Wet composite nzira
Mutsara wemvura inonyungudika yakanamatira inoputirwa pamusoro pechigadziko (yepurasitiki firimu, aluminium foil), iyo inosanganiswa nezvimwe zvinhu (bepa, cellophane) kuburikidza nekumanikidza roller, yobva yaomeswa kuita firimu rinoumbwa kuburikidza nekupisa. drying channel.Iyi nzira inoshandiswa pakurongedza chikafu chakaoma.
②Dry compound method
Kutanga, pfekedza zvakaenzana munyungudutswa-based adhesive pane substrate, wozoitumira mugero rinopisa rekuomesa kuti munyungurutsire nyunguduke, wobva wabatanidza kamwe kamwe neimwe firimu.Semuenzaniso, iyo yakatambanudzwa polypropylene firimu (OPP) inowanzo sanganiswa nezvimwe zvinhu neyakaoma composite process mushure mekudhindwa kwemukati.Iyo yakajairika chimiro ndeye: biaxially oriented polypropylene firimu (BOPP, 12μ m) Aluminium foil (AIU, 9μ m) Uye unidirectionally yakatambanudzwa polypropylene firimu (CPP, 70μ m).Maitirwo acho ndeekupfekedza zvakaenzana iyo solvent-mhando "yakaoma adhesive poda" pachigadziko chine roller coating mudziyo, wozoitumira mugero rinopisa rekuomesa kuti rinyatso kunyungudutsa, wozoisanganisa neimwe firimu ine. a composite roller.
③Extrusion compound nzira
Iyo keteni-yakaita seyakanyungudutswa polyethylene yakanyungudutswa kubva pakatsemuka cheT mold inomanikidzwa ne clamping roller uye yakanyungudutswa pabepa kana firimu re polyethylene coating, kana mamwe mafirimu anopiwa kubva kune yechipiri mapepa ekudyisa chikamu, uye polyethylene inosungirirwa se bonding layer.
④Hot-melt composite nzira
Polyethylene-acrylate copolymer, vinyl acid-ethylene copolymer uye parafini zvinopisa uye zvinonyungudutswa pamwe chete, zvobva zvaputirwa pahwaro zvinhu, pakarepo zvakasanganiswa nezvimwe zvinhu zvinoumbwa uye zvobva zvatonhodzwa.
⑤Multi-layer extrusion composite nzira
Akasiyana-siyana epurasitiki resin ane akasiyana zvivakwa anosvinwa muforoma kuburikidza neakawanda extruder kuti agadzire firimu remubatanidzwa.Iyi nzira haishandisi zvinonamira uye organic solvents pakati pematanho.Iyo firimu haina kunhuhwirira kwakasarudzika uye haina zvinokuvadza zvinonyungudutsa kupinda.Inokodzera kurongedza chikafu nehupenyu hurefu hwesherufu.Semuenzaniso, iyo general dhizaini LLDPE/PP/LLDPE ine kujeka kwakanaka, uye ukobvu kazhinji 50-60.μ m.Kana iyo sherufu yehupenyu hwakareba, zvinodikanwa kushandisa anopfuura mashanu akaturikidzana epamusoro barriers co-extruded firimu, uye yepakati layer ndeye yakakwirira barriers zvinhu PA, PET uye EVOH.
Nguva yekutumira: Mar-07-2023
