Filimi yo gupfunyikaho ya Polypropylene ishingiye ku ruhande rumwe n'urundi ruhande ni iki?

Filimi ya polypropylene ishingiye ku murongo wa kabiri (BOPP) ni ubwoko bwa firime yo gupfunyika igenda yoroshye. Filimi yo gupfunyika ya polypropylene ishingiye ku murongo wa kabiri irambitse mu cyerekezo cya mashini no mu cyerekezo cyayo. Ibi bituma habaho icyerekezo cy’uruhererekane rw’ibinyabutabire mu byerekezo byombi.

Ubu bwoko bwa firime yoroshye gupfunyika ikorwa binyuze mu buryo bwo gukora umuyoboro. Umuyoboro wa firime umeze nk'umuyoboro ushyushye kugeza aho woroshye (ibi bitandukanye n'aho ushongesha) kandi unyuzwamo imashini. Filime irambuka hagati ya 300% - 400%.

Ubundi buryo, firime ishobora no kuramburwa hakoreshejwe uburyo buzwi nka tenter-frame film manufacturing. Hamwe n'ubu buryo, polimeri zishyirwa ku mugozi ukonje (uzwi kandi nk'urupapuro rw'ibanze) hanyuma zigakururwa mu cyerekezo cy'imashini. Tenter-frame firime ikoresha imigozi myinshi kugira ngo ikore iyi firime.

Uburyo bwa tenter-frame muri rusange bwongera firime kuri 4.5:1 mu cyerekezo cy'imashini na 8.0:1 mu cyerekezo cyambukiranya. Ibyo bivuzwe, ikigereranyo kirahinduka burundu.

Uburyo bwo gushushanya icyuma gifata amabara y'umugongo (tenter-frame) bukunze kugaragara kurusha ubwoko bw'umugongo. Butanga firime ibengerana cyane kandi isobanutse neza. Icyerekezo cya kabiri cy'amabara y'umugongo (Biaxial) cyongera imbaraga kandi bigatuma gikomera cyane, kirushaho kugaragara neza, kandi kikarwanya cyane amavuta n'amavuta.

Filimi ya BOPP ifite kandi ubushobozi bwo kubangamira umwuka n'umwuka wa ogisijeni. Ubudahangarwa bw'ingaruka no kudahangarwa n'ingufu zo mu kirere ni byiza cyane iyo ukoresheje firimi ya BOPP ugereranije na firimi ya polypropylene shrink.

Filimi zikozwe muri polypropylene zikoreshwa mu gupfunyika ibiryo zikunze gukoreshwa cyane mu gupfunyika ibiryo. Zisimbura cellophane vuba mu gukoresha harimo n'ibiryo byo kurya n'itabi. Ibi biterwa ahanini n'imiterere yazo myiza n'igiciro gito.

Ibigo byinshi bihitamo gukoresha BOPP aho gukoresha filime zisanzwe zo gupfunyika kuko zifite imiterere n'ubushobozi bwongerewe kurusha filime zisanzwe zo gupfunyika.

Icyitonderwa ni uko kuziba ubushyuhe bigora firime za BOPP. Ariko, ibi bishobora koroshywa no gusiga firime nyuma yo kuyitunganya hakoreshejwe ibikoresho bifunga ubushyuhe cyangwa kuyishyira hamwe na polimeri mbere yo kuyitunganya. Ibi bizatuma habaho firime y’ibice byinshi.