Ifilimu yokunwebeka, eyaziwa ngokuba yifilimu yokunwebeka kunye nefilimu yokuncitshiswa kobushushu, yaqala ukuveliswa eTshayina kusetyenziswa i-PVC njengezinto ezisisiseko kunye ne-DOA njengeplastiki kunye nefuthe lokuzincamathelisa lefilimu yokunwebeka yePVC. Ngenxa yeengxaki zokusingqongileyo, iindleko eziphezulu (xa kuthelekiswa ne-PE, indawo encinci yokupakishwa ngeyunithi nganye) kunye nokunganwebeki kakuhle, ifilimu yokunwebeka ye-PE yaphela xa imveliso yasekhaya yaqala ngo-1994-1995. Izinto ezisisiseko ikakhulu yi-LLDPE, kubandakanya i-C4, i-C6, i-C8 kunye ne-metallocene PE (MPE).
Iimpawu
Iveliswa ngokusebenzisa i-LLDPE resin kunye ne-tackifier special additives formula ehambelanayo, kwaye ingavelisa ifilimu yokujika esebenza ngemisebenzi emininzi yomatshini wesandla, umatshini wohlobo lokumelana, umatshini wohlobo lwe-pre-stretch, i-anti-UV, i-anti-static kunye ne-anti-rust. Inezibonelelo ezilandelayo:
1. Ukusebenzisa izixhobo zokukhupha i-co-extrusion ezinamaleko amabini, ifilimu yokujika ecinezelweyo inokwandisa iimpawu ze-polymer nganye, ukucaca kwayo, amandla okuxinana, kunye nokumelana nokugqobhoka, ifikelele kwinqanaba elifanelekileyo kwindawo yokunyibilika.
2. Ineempawu zokuxinana ezilungileyo, ukukhanya okucacileyo, kunye nobukhulu obufanayo.
3. Inobude obude, iyakwazi ukumelana kakuhle nokukrazula, iyakwazi ukumelana nokukrazula ngokuthe tye, kwaye iyakwazi ukuzincamathelisa kakuhle.
4. Yinto enobuhlobo nokusingqongileyo ephinda isetyenziswe, ayinancasa, ayinatyhefu, ingapakishwa ngqo kukutya.
5. ingavelisa iimveliso zokuncamathelisa ezicala linye, inciphise ingxolo ekhutshwayo ngexesha lenkqubo yokusonga nokusolula, inciphise uthuli nesanti kwinkqubo yokuthutha nokugcina.
Isicelo
1. Ukupakisha okutywiniweyo
Olu hlobo lokupakisha lufana nokupakisha ifilimu encitshisiweyo, apho ifilimu isongelwa kwipalethi ukuze igoqwe yonke, kwaye emva koko ii-heat grippers ezimbini zifudumeza ifilimu kuzo zombini iziphelo kunye. Olu lolona hlobo lokuqala lwefilimu ejikelezayo esetyenzisiweyo kwaye lukhokelele ekuphuhlisweni kwezinye iintlobo ezininzi zokupakisha.
2. Ukupakisha okubanzi ngokupheleleyo
Olu hlobo lokupakisha lufuna ukuba ifilimu ibe banzi ngokwaneleyo ukugquma ipalethi, enesimo esiqhelekileyo, ngoko ke ifanelekile ukusetyenziswa ngefilimu enobukhulu obuyi-17 ukuya kwi-35μm.
3. Ukupakisha ngesandla
Olu hlobo lokupakisha lolona hlobo lulula lokupakisha ifilimu yokusonga, ifilimu efakwe kwishelufu okanye ebanjwe ngesandla, ngokujikeleza kwepallet okanye ifilimu ejikeleze ipallet. Isetyenziswa kakhulu ekupakisheni kwakhona iipallet ezisongiweyo emva kokuba zaphukile, kunye nokupakisha iipallet eziqhelekileyo. Olu hlobo lokupakisha lucotha kwaye ubukhulu befilimu obufanelekileyo yi-15 ukuya kwi-20 μm.
