Ifilimu ye-Biaxially oriented polypropylene (BOPP) iwuhlobo lwefilimu yokupakisha eguquguqukayo.Ifilimu ye-polypropylene overwrap eyenziwe nge-Biaxially yeluliwe emshinini naseziqondisweni eziphambene.Lokhu kubangela umumo wochungechunge lwamangqamuzana kuzo zombili izinkomba.
Lolu hlobo lwefilimu yokupakisha eguquguqukayo lwenziwa ngenqubo yokukhiqiza amashubhu.Ibhamuza lefilimu elimise okweshubhu liyafuthwa bese lishiselwa lize lifike endaweni yalo yokuthamba (lokhu kwehlukile endaweni yokuncibilika) futhi yelulelwa ngemishini.Ifilimu inweba phakathi kuka-300% - 400%.
Kungenjalo, ifilimu inganwetshwa ngenqubo eyaziwa ngokuthi ukukhiqizwa kwefilimu ye-tent-frame.Ngale ndlela, ama-polymers adluliselwa ku-cast cast roll epholile (owaziwa nangokuthi i-base sheet) futhi adwetshwe ngendlela yomshini.Ukwenziwa kwefilimu ye-tenter-frame isebenzisa amasethi amaningana amaroli ukuze kudalwe le filimu.
Inqubo ye-tent-frame ngokuvamile yelula ifilimu 4.5:1 ohlangothini lomshini kanye no-8.0:1 ohlangothini oluphambene.Uma sekushiwo, izilinganiso zilungiseka ngokugcwele.
Inqubo ye-tent-frame ivame kakhulu kunokwehluka kwe-tubular.Ikhiqiza ifilimu ecwebezelayo, ecacile.Ukuma kwe-Biaxial kukhulisa amandla futhi kubangele ukuqina okuphakeme, ukukhanya okuthuthukisiwe, nokumelana okuphezulu kuwoyela namafutha.
Ifilimu ye-BOPP ibuye iqhayise ngezakhiwo ezithiyo ezikhulayo ku-vapor nomoya-mpilo.Ukumelana nomthelela kanye nokumelana ne-flexcrack kungcono kakhulu nge-BOPP uma iqhathaniswa nefilimu ye-polypropylene shrink.
Amafilimu e-polypropylene overwrap enziwe nge-Biaxially avame ukusetshenziselwa ukupakisha ukudla.Zishintsha ngokushesha i-cellophane ezisetshenziswayo ezihlanganisa ukudla okulula nokupakishwa kukagwayi.Lokhu ngokuyinhloko kungenxa yezakhiwo zabo eziphakeme kanye nezindleko eziphansi.
Izinkampani eziningi zikhetha ukusebenzisa i-BOPP esikhundleni samafilimu endabuko ashwabana njengoba ebonisa izici ezithuthukisiwe namandla angaphezu kwalawo amafilimu okupakisha avumelana nezimo.
Kumele kuqashelwe ukuthi ukuvala uphawu lokushisa kunzima kumafilimu e-BOPP.Kodwa-ke, lokhu kungenziwa kube lula ngokumboza ifilimu ngemuva kokucubungula ngento evaleka ukushisa noma ukuyikhipha nge-co-polymer ngaphambi kokucubungula.Lokhu kuzoholela kufilimu enezingqimba eziningi.
Isikhathi sokuthumela: Apr-04-2023