Umufuka wa PE ni umufuka usanzwe mu buzima bwacu bwa buri munsi, ukoreshwa mu gupfunyika imbuto n'imboga mu bwoko bwose, mu guhaha, mu gupfunyika ibikomoka ku buhinzi, nibindi. Gukora umufuka wa pulasitiki usa n'aho woroshye bishobora kugorana cyane. Uburyo bwo gukora umufuka wa PE burimo uduce twa pulasitiki - kuvanga ubushyuhe - kunagura extrusion - gutunganya ibikoresho by'ikoranabuhanga -; Umufuka wa PE ahanini ni wo mu buryo bwinshi bwavuzwe haruguru, bworoshye nyuma y'uburyo butatu: gupfunyika firime ------ gucapa ------- gukora imifuka.
Uburyo bwo gucapa imifuka ya PE bukwiye kwitabwaho iki?
Polyethylene, ifite ubushobozi bwo kurwanya ubushyuhe buke cyane (ikoresha ubushyuhe bugera kuri -70 ~ -100), ihamye mu bya shimi, isuri nyinshi ya aside na alkali (ifite ubushobozi bwo kwihanganira aside igabanya ubushyuhe), idashobora gushonga mu bintu byose bisukura mu bushyuhe bw'icyumba, idashobora kwinjiza umwuka mu buryo buhagije, ikora neza mu byuma bishyushya amashanyarazi. Ariko, polyethylene irahangana n'ibibazo by'ibidukikije (imikorere ya shimi n'imikorere ya mekanike) kandi ntikunda gusaza ubushyuhe. Imiterere ya polyethylene iratandukanye bitewe n'ubwoko, ahanini bitewe n'imiterere ya molekile n'ubucucike. Ibicuruzwa bifite ubucucike butandukanye (0.91-0.96 G/CM3) bishobora kuboneka hakoreshejwe uburyo butandukanye bwo gukora. Polyethylene ishobora gutunganywa hakoreshejwe uburyo busanzwe bwo gukora thermoplastic (reba uburyo bwo gutunganya plastiki).
Ni izihe nyandiko zijyanye n'iyi gahunda mu buryo burambuye hepfo?
Uburyo bwo gusohora filime bugomba kwitabwaho ku ngingo zikurikira:
1. Igipimo cy'ibikoresho fatizo: hakurikijwe ibisabwa bitandukanye by'imifuka ya PE, gutegura ibipimo bitandukanye by'ibikoresho fatizo. Urugero: kurwanya static, kurwanya ingese, kurwanya, kuyobora amashanyarazi, kwangirika kw'ibinyabuzima n'ibindi bisabwa, ongeramo ibintu byinshi by'inyongera urugero: gukoresha umutuku, umukara, ibara n'andi mabara, ongeramo udupfundikizo tw'amabara atandukanye. Dukurikije mucyo, gukomera, imbaraga zo gucika, gukuramo umwuka n'ibindi bisabwa, simbura ibirango bitandukanye cyangwa ibirango by'ibikoresho bya PE. Urugero: dukurikije ibisabwa byihariye, shimangira ibisabwa byo mucyo mwinshi, kwangirika gukomeye, gufunguka neza, kugira ngo uhindure igipimo cy'ibikoresho fatizo.
2.Inzira yo gucapa filime, gukenera gutunganya ikoranabuhanga, muri iki gihe kwita ku mbaraga zo gutunganya ikoranabuhanga, kugira ngo ibikoresho bya PE by’ingoma bibe bikomeye (DAYIN) bihagije kugira ngo wino ifatanye neza.
3.mu gikorwa cyo gusohora filime, hakurikijwe ibisabwa byihariye bya filime, gufungura rimwe, gufungura kabiri, gupfunyika, kwangirika kw'ingingo zishyushye, gushushanya, kwagura n'ibindi bikorwa.
Uburyo bwo gucapa imifuka ya PE bugomba kwitabwaho n'ibi bikurikira:
1. wino icapa: wino ishingiye ku mazi, wino yumisha vuba, wino itagaragara, wino ihindura amabara, wino idakora nk'iy'impimbano, wino ikora, wino iyobora amazi, wino y'ikoranabuhanga rike, wino idakora n'ibindi biranga wino.
2. Icyapa cyo gucapa: hashingiwe ku bisabwa mu gucapa, gucapa gravure (icyuma gicapa) na flexography (offset) birakoreshwa. Ubu buryo bubiri butandukanye bwo gucapa.
3. Ukurikije uburyo ibikubiye mu icapiro bitoroshye n'uburyo amabara agoye, hitamo uburyo bwo gucapa: icapiro rya monochrome, icapiro rya monochrome ku mpande ebyiri, icapiro ry'amabara ku mpande imwe, icapiro ry'amabara ku mpande ebyiri.
4. Hakurikijwe ibisabwa byihariye byo gucapa, hakurikijwe imiterere yo guhindura ibara, kurwanya ibihimbano, amashanyarazi, kole n'ibindi, hitamo wino cyangwa inyongera zitandukanye.
Igihe cyo kohereza ubutumwa: Werurwe-03-2022
