Ifilimu yokuPakisha ukutya ejikelezayo Umatshini wokuPakisha oZenzekelayo Ifilimu yokuPakisha iPlastiki

Ifilimu edityanisiweyo eyenziwe ngamaleya amabini okanye ngaphezulu kufuneka ingabi nakwahlulwa njengefilimu enye. Oku kubandakanya okungaphezulu nje kwento yokuncamathelisa phakathi kweefilimu ezimbini. Kwakhona kunxulumene nefilimu yeinki. Izinto zokuncamathelisa ziimveliso zokwenziwa Uninzi lwezinto zokuncamathelisa zizinto zokuncamathelisa ze-polyurethane (PU) ezinamacandelo amabini. Indlela esebenza ngayo inkqubo yokubhola iyayiphilisa into yokuncamathelisa. Into yokuncamathelisa kumphezulu wesiseko sendawo ikakhulu yinkqubo ebonakalayo kwaye inxalenye encinci yinkqubo yekhemikhali. Ngeli xesha, izinto zokuncamathelisa ziyagrunjwa kunye nezinto ezikwifilimu yeplastiki kwaye ziphinde zinyangwe.
Ukuba ifilimu edityanisiweyo sele ishicilelwe ngexesha lenkqubo yokubopha, i-adhesive kunye ne-inki kufuneka zihlangabezane neemfuno ezingaphezulu. Imfuneko esisiseko kukuba umaleko wangaphakathi kufuneka ube nokuqina okuhle kokunamathela kunye nokomisa ngaphambi kokuba i-lamination ivulwe. Oku kuthetha ukuba akukho masalela e-solvent avumelekileyo kwi-liner eprintiweyo. Kodwa i-solvent okanye i-alcohol zihlala zishiywe kwi-binder ye-inki. Ngenxa yesi sizathu, iipropati ze-adhesive kufuneka zikwazi ukubopha kwi-free radicals (amaqela e--OH). Ngaphandle koko, i-adhesive kunye ne-agent yokupholisa ziya kusabela zodwa kwaye zilahlekelwe ziimpawu zazo zokuqala.
Phakathi kwezincamathelisi, izincamathelisi ezisekelwe kwisinyibilikisi zahlulwe kwizincamathelisi ezingenasinyibilikisi ezifana nezincamathelisi ze-UV. Umxube wokubhola osekelwe kwisinyibilikisi ufuna umngxuma wokomisa ukuze unyibilikise isinyibilikisi. Xa kusetyenziswa izincamathelisi ze-UV, ukukhanya kwe-UV kuhamba ngefilimu edibeneyo ukuya kwi-adhesive ukuze kuhlanganiswe i-adhesive.
1. Ikhompawundi eyomileyo
Ibhekisa kwindlela apho i-adhesive idityaniswe khona kwimeko eyomileyo. Okokuqala, i-adhesive igqunywa kwi-substrate. Emva kokomiswa kwi-tunnel yokomisa, zonke izinyibilikisi ezikwi-adhesive zomiswa. Inkqubo yokunyibilikisa i-adhesive, ukubopha enye i-substrate kuyo, ukupholisa, kunye nokucola ukuvelisa izinto ezidityanisiweyo ezineempawu ezilungileyo.
2. Ikhompawundi yokukhupha
Ikwaziwa nangokuba yi-casting compounding, enye yeendlela eziphambili zokuvelisa ukupakisha okuguquguqukayo. Inyibilikisa ii-thermoplastics ezifana ne-polyethylene kunye ne-polypropylene kumatshini wokudibanisa i-extrusion, kwaye iphuma ngokulinganayo kwifilimu encinci esuka entloko ethe tyaba, kwaye igqunywa rhoqo. Kwizinto ezisisiseko, ifilimu edibeneyo yeeleya ezimbini okanye ngaphezulu yenziwa ngokucinezela nge-pressure roller kunye nokupholisa nge-cooling roller.
I-extrusion lamination ineengenelo zesantya esikhawulezayo semveliso, inkqubo elula yemveliso, indawo yemveliso ecocekileyo, ukusebenza kakuhle kwemveliso, ukusebenza okulula, iindleko eziphantsi, kunye nokungabikho kwentsalela ye-solvent. Indawo ebalulekileyo.