Ifilimu ye-polypropylene ye-Biaxially (BOPP) luhlobo lwefilimu yokupakisha eguquguqukayo. Ifilimu ye-polypropylene overwrap ejolise kwi-Biaxially yoluliwe kumatshini kunye nezalathiso ezinqamlezileyo. Oku kubangela uqhelaniso lwetsheyini yeemolekyuli kumacala omabini.
Olu hlobo lwefilimu yokupakisha eguquguqukayo lwenziwa ngenkqubo yokuvelisa i-tubular. Iqamza lefilim elimilise okwetyhubhu liyanyuselwa kwaye lifudunyezwe kwindawo yalo yokuthambisa (oku kwahlukile kwindawo yokunyibilika) kwaye yolulwe ngoomatshini. Ifilimu inabela phakathi kwe-300% - 400%.
Kungenjalo, ifilimu inokwandiswa ngenkqubo eyaziwa ngokuba yi-tent-frame film production. Ngobu buchule, iipolymers zikhutshelwa kumqulu opholileyo opholileyo (okwabizwa ngokuba yi-base sheet) kwaye izotywe ecaleni kwendlela yomatshini. Ukwenziwa kwefilimu ye-Tenter-frame isebenzisa iiseti ezininzi zemiqulu ukwenza le filimu.
Inkqubo ye-tent-frame ngokubanzi yolula ifilimu 4.5: 1 kwicala lomatshini kunye ne-8.0: 1 kwicala elinqamlezayo. Oko kuthethwa, iireyishini zilungelelaniswa ngokupheleleyo.
Inkqubo ye-tenter-frame ixhaphake kakhulu kunokwahluka kwe-tubular. Ivelisa ifilimu ecwebezelayo, ecacileyo. Ukuqhelaniswa ne-Biaxial konyusa amandla kwaye kukhokelela kukuqina okuphezulu, ukucaca okuphuculweyo, kunye nokumelana okuphezulu kweoyile kunye namafutha.
Ifilimu ye-BOPP ikwaqhayisa ngeempawu ezongeziweyo zomqobo kumphunga kunye neoksijini. Ukuchasana nempembelelo kunye nokumelana ne-flexcrack kungcono kakhulu nge-BOPP xa ithelekiswa nefilimu ye-polypropylene shrink.
Iifilimu ezingaphezulu kwe-Biaxially oriented polypropylene overwrap zezona ziqhelekileyo zisetyenziselwa ukupakisha ukutya. Batshintsha ngokukhawuleza i-cellophane kwizicelo ezibandakanya ukutya okutyiwayo kunye nokupakishwa kwecuba. Oku kubangelwa ikakhulu kwiipropati zabo eziphezulu kunye neendleko eziphantsi.
Iinkampani ezininzi zikhetha ukusebenzisa iBOPP endaweni yeefilimu ezicuthekayo zemveli njengoko zibonakalisa iipropathi eziphuculweyo kunye nesakhono esingaphezulu kwezo zefilim zokupakisha eziguquguqukayo.
Kufuneka kuqatshelwe ukuba ukutywinwa kobushushu kunzima kwiifilimu zeBOPP. Nangona kunjalo, oku kunokwenziwa lula ngokugquma ifilimu emva kokucutshungulwa ngento enobushushu obutywiniweyo okanye i-co-extruding kunye ne-co-polymer ngaphambi kokucubungula. Oku kuya kubangela ifilimu enemigangatho emininzi.
Ixesha lokuposa: Apr-04-2023