Imifuka yo gupfunyikamo imyenda yo mu rugo isanzwe ikozwe muri polyethylene yo hasi (LDPE) cyangwa polypropylene ya copolymer (CPP), ibi bikaba bituma irushaho kuba yoroshye kandi idacika, irinda ubushuhe n'amarira kugira ngo irinde imyenda yo gupfunyika ubushuhe.

Ikimenyetso cyo guhindura ibara cya laser ya UV gikoreshwa ku gice cyo hanze, gihindura imiterere ya molekile y'igitambaro kugira ngo habeho ibimenyetso bisobanutse neza by'itariki yo gukorerwaho. Ubu buryo budashobora gukoreshwa butuma ibimenyetso bidashira kandi bidashobora gucika intege bikomeza kugaragara uko igihe kigenda gihita.

Ikimenyetso cya laser ya UV ku gipfunyika cya PET cyo hanze cy’imifuka ya PET/AL/PE ipakiye gikoresha imirasire ya laser ifite ingufu nyinshi kugira ngo itere ingaruka za fotokemike n’ubushyuhe buke. Iyo ikoreshejwe ku gipfunyika cy’umweru, laser ihindura imiterere ya molekile, igahindura ubuso imvi aho gukuraho gusa urwego.

Iri hame ryo guhindura amabara rituma habaho ibimenyetso bisobanutse kandi biramba, bikunze gukoreshwa mu gucapa amatariki yo gukora no mu mibare y’amatsinda. Ibirango bigumana imbaraga zo kwangirika no kudashira, bikomeza gusomwa nubwo byaba bikoreshejwe igihe kirekire cyangwa mu bihe bikomeye by’ibidukikije.

Ubusanzwe, ipaki y'ibikoresho by'isuku ikorwa muri polyethylene (PE)/polypropylene (PP), itanga ubushobozi bwo kurambura no gufunga neza. Ifite imiterere idasobanutse kandi ikumva yoroshye, itanga ubushobozi bwo kwirinda ubushuhe n'umukungugu, ikarinda neza ibicuruzwa mu gihe ikomeza gukomera mu gupaki.

Iyi filime ivanze ishyigikira ibimenyetso bya laser ya UV, aho laser itera ubwihindurize bw'izuba mu gitambaro, igahindura ibara ryayo kugira ngo ikore ibimenyetso by'imvi ku buso bwera ku matariki yo gukorerwamo n'imibare y'itsinda. Ubu buryo butuma ibimenyetso bisobanutse kandi biramba bikomeza kwangirika ndetse no mu gihe kirekire bibitswe kandi bigatwarwa.

Imifuka yo gupfunyikamo ibiryo ifite ubuso bworoshye bw'ifeza, ikozwe mu ifu ya aluminiyumu (AL) na PET, ikunze gukoreshwa mu gupfunyikamo ibiryo bifite imipaka myinshi. Iyi mifuka ifite ubwiza bw'icyuma bufite imiterere idasobanutse, itanga ubushuhe bwiza, ogisijeni, kandi idakira urumuri, bigatuma ibiryo biguma ari bishya kandi bitoshye mu gihe cyo kubitwara no kubibika.

Ubusanzwe ikoreshwa mu ikawa, icyayi, imbuto z'ubunyobwa, ibirungo, n'ibiryo byiteguye kuribwa, iyi mifuka ikomeza kuba myiza n'impumuro nziza y'ibiryo. Imiterere ya fibre laser ikuraho igishishwa cyo hejuru, ikagaragaza ibara ryimbitse kugira ngo habeho itariki isobanutse kandi irambye yo gukorerwaho n'imibare y'ibicuruzwa birwanya kwangirika no gucika intege.

Imifuka yo gupakiramo noodles isanzwe ikozwe mu bikoresho bya BOPP/PE (polypropylene/polyethylene ifite imiterere ibiri). Urwego rwo hanze rwa BOPP rutanga ubwiza bwinshi n'uburyo bwo gucapa bwiza, bigatuma noodles zigaragara neza mu gihe zitanga ubushobozi bwo kwirinda ubushuhe. Urwego rw'imbere rwa PE ni rworoshye, ntirugira uburozi, kandi ntirukoresha ibiryo, rufite ubushobozi bukomeye bwo kuziba ubushyuhe kugira ngo rube rufite ubushuhe kandi rudakoresha ubushuhe.

Agace k'umweru gatwikiriwe ku buso bwa BOPP kagenewe gushyiramo ikimenyetso cya laser ya UV. Hashingiwe ku ihame ryo guhindura ibara rya laser, ibara ry'igitambaro rihindurwa kugira ngo hamenyekane neza amatariki yo gukorerwamo n'imibare y'itsinda ry'ibikoresho bidapfunyitse mu ipaki. Ibimenyetso biramba kandi bidashira bishimangira umutekano w'ibicuruzwa mu gihe cyo kubitwara no kubibika.

Ikoranabuhanga ryo gushyira ibimenyetso kuri laser ya UV rikoreshwa ku kirango cya PET cy'amacupa yo gusukura isura afite ishusho y'umuzenguruko, rituma ibimenyetso by'itariki yo gukora biba bisobanutse neza ku buso bugoramye. Laser ikora binyuze mu buryo bwo guhindura ibara, aho imirasire ifite ingufu nyinshi itera imiterere ya fotokemike, igahindura imiterere ya molekile y'ubuso bwa PET kugira ngo hakorwe ibimenyetso by'umweru-umweru cyangwa byijimye nta gukuraho ibikoresho.

Ubu buryo ni bwiza ku buso bugoramye, bufite ubushyuhe buke kugira ngo budakwangiza cyangwa guhindura imiterere y'ubuso.

Udupaki duto two gushyiramo umutobe wuzuye ubusanzwe dukozwe mu bikoresho bya PET/AL/PE. Urwego rw'inyuma rwa PET rurakomeye kandi ntirushira, urwego rwa aluminiyumu (AL) rufunga urumuri, ogisijeni, n'ubushuhe, mu gihe urwego rw'imbere rwa PE rutuma ibiryo bikomeza kumererwa neza no gufunga.

Kugira ngo hamenyekane amatariki yo gukora n'imibare y'itsinda, ikimenyetso cya laser ya UV gishyirwa ku gice cyo hanze cya PET. Laser itera imikorere ya photochemical ihindura imiterere ya molekile y'ubuso bwa PET, bigatuma habaho ibimenyetso by'imvi cyangwa byijimye bidapfundikiye mu gipfunyika. Ubu buryo butuma habaho ibimenyetso bisobanutse kandi bidashobora kwangirika mu gihe bubungabunga ubusugire bw'urupapuro rwa aluminiyumu n'urupapuro rwa PE, hirindwa ko umutobe usohoka.