Umshini Wokupakisha Ozenzakalelayo Wefilimu Yokupakisha Ukudla Ifilimu Yokupakisha Ipulasitiki

Ifilimu ehlanganisiwe eyakhiwe ngezingqimba ezimbili noma ngaphezulu kufanele ingabi nakwehlukaniswa njengefilimu eyodwa. Lokhu kuhilela okungaphezu nje kokunamathela phakathi kwamafilimu amabili. Kuhlobene futhi nefilimu yeyinki. Ama-Adhesive ayimikhiqizo yokwenziwa Ama-Adhesive amaningi ayi-adhesive ye-polyurethane (PU) enezingxenye ezimbili. Ukusabela kwamakhemikhali kwenqubo yokubhoboza kwelapha i-adhesive. I-adhesive ebusweni be-substrate ngokuyinhloko inqubo ebonakalayo futhi ingxenye encane kuphela eyinqubo yamakhemikhali. Ngalesi sikhathi, izingxenye ze-adhesive zibhobozwa kanye nezingxenye ezikwifilimu yepulasitiki bese ziqiniswa.
Uma ifilimu ehlanganisiwe isivele iphrintiwe ngesikhathi senqubo yokubopha, khona-ke ingcina noyinki kufanele kuhlangabezane nezidingo ezengeziwe. Imfuneko eyisisekelo kakhulu ukuthi ungqimba lwangaphakathi kufanele lube nokunamathela okuhle kanye nokomisa ngaphambi kokulamina. Lokhu kusho ukuthi azikho izinsalela ze-solvent ezivunyelwe ku-liner ephrintiwe. Kodwa i-solvent noma utshwala kuvame ukushiywa ku-binder yeyinki. Ngenxa yalesi sizathu, izakhiwo ze-glue kufanele zikwazi ukubopha kuma-free radicals (amaqembu e--OH). Ngaphandle kwalokho, ingcina kanye ne-ejenti yokwelapha zizosabela zodwa futhi zilahlekelwe yizakhiwo zazo zokuqala.
Phakathi kwezinamathelisi, izinamathelisi ezisekelwe ku-solvent zihlukaniswa nezinamathelisi ezingenazo izinyibilikisi njengezinamathelisi ze-UV. Ingxube yokubhoboza esekelwe ku-solvent idinga umhubhe wokomisa ukuze i-solvent iguquke. Lapho kusetshenziswa izinamathelisi ze-UV, ukukhanya kwe-UV kuhamba ngefilimu ehlanganisiwe kuye ku-glue ukuze kuhlanganiswe i-glue ndawonye.
1. Inhlanganisela eyomile
Kubhekisela endleleni lapho ingcina ihlanganiswa khona esimweni esomile. Okokuqala, ingcina imbozwa phezu kwesisekelo. Ngemva kokomiswa emhubheni wokomisa, zonke izinyibilikisi eziku-ingcina ziyamiswa. Inqubo yokuncibilikisa ingcina, ukubopha enye isisekelo kuyo, ukupholisa, nokulungisa ukukhiqiza izinto ezihlanganisiwe ezinezakhiwo ezinhle.
2. Inhlanganisela yokukhipha
Kwaziwa nangokuthi i-casting compounding, okungenye yezindlela eziyinhloko zokukhiqiza ukupakisha okuguquguqukayo okuhlanganisiwe. Incibilikisa ama-thermoplastics afana ne-polyethylene ne-polypropylene emshinini wokuhlanganisa i-extrusion, bese iphuma ngokulinganayo ngefilimu encane evela ekhanda eliyisicaba, futhi igqokwa njalo. Entweni eyisisekelo, ifilimu ehlanganisiwe yezingqimba ezimbili noma ngaphezulu yakhiwa ngokucindezela nge-pressure roller kanye nokupholisa nge-cooling roller.
I-extrusion lamination inezinzuzo zesivinini sokukhiqiza esisheshayo, inqubo yokukhiqiza elula, indawo yokukhiqiza ehlanzekile, ukusebenza kahle kokukhiqiza okuphezulu, ukusebenza okulula, izindleko eziphansi, kanye nokungabi nalutho oluyinsalela ye-solvent.