Intanga ngore y'icupa rya pulasitiki ni yo itangira gukoreshwa mu ikorwa ry'amacupa ya pulasitiki. Ibipimo byayo nk'ingano, umugozi n'uburemere ni ingenzi kandi bifitanye isano itaziguye n'ikoreshwa n'imikorere y'icupa.
1. Isano iri hagati y'ubwiza bwa preform n'ubwiza bw'ibikoresho bya PET
Polyethylene terephthalate (PET) yitwa polyester. Ikorwa ry'amacupa ya PET pulasitiki rishobora kugabanywamo ibice bibiri: injection stretch blow molding (mu magambo ahinnye nka injection stretch blow molding) na extrusion stretch blow molding (mu magambo ahinnye nka extrusion stretch blow molding) hakurikijwe uburyo butandukanye bwo gutegura. Muri ubwo buryo bubiri bwo gukora, inzira yo gukora injection stretch blow molding iroroshye kugenzura, ifite umusaruro mwinshi, kandi ifite imyanda mike, kandi ikunze kugaragara cyane.
Mu gutegura amacupa yabumbwe n'ibinure, uduce twa PET dubanza gushyirwa mu icupa ryabumbwe. Bisaba ko igipimo cy'ibikoresho byabumbwe n'ibinure bitagomba kuba kinini cyane (munsi ya 5%), igihe cyo kongera gukoresha ntibigomba kurenga inshuro ebyiri, kandi uburemere bwa molekile n'ubucucike ntibigomba kuba bike cyane (uburemere bwa molekile 31000-50000, ubucucike bw'imbere 0.78-0.85 cm3/g). Dukurikije Itegeko ry'Igihugu ry'Umutekano w'Ibiribwa, gukoresha ibikoresho byabumbwe n'ibinure byabumbwe mu gupakira ibiryo n'imiti birabujijwe. Ibinure byabumbwe n'ibinure bigomba kubikwa amasaha arenga 24 mbere yo kubikoresha. Ibinure bitakoreshejwe nyuma yo gushyushya bigomba kubikwa amasaha arenga 48 mbere yuko byongera gushyushya. Igihe cyo kubika icupa ntigikwiye kurenga amezi atandatu.
Ubwiza bw'imashini ikoreshwa mu gushushanya bushingiye ahanini ku bwiza bw'ibikoresho bya PET, bityo ni ngombwa guhitamo ibikoresho byoroshye gushyiramo umwuka no gukora, no gushyiraho uburyo bwo gukora imashini ikoreshwa mu gushushanya. Igerageza ryerekana ko imashini zikoreshwa mu gushushanya za PET zifite ubukana bumwe zoroshye gushushanya imashini hakoreshejwe ibikoresho fatizo bitumizwa mu mahanga kuruta ibikoresho fatizo byo mu gihugu. Ariko, itsinda rimwe ry'imashini zishobora kugira uburyo butandukanye bwo gushushanya imashini zifite amatariki atandukanye yo gukora. Ubwiza bw'imashini ikoreshwa mu gushushanya bugena ingorane z'imashini ikoreshwa mu gushushanya imashini. Ibisabwa kuri iyo mashini ni ubuziranenge, ubwisanzure, nta mwanda, nta ibara, uburebure bukwiye bw'aho ishyirwa, n'umurambararo w'amazi hirya no hino.
Gushyushya preform byuzuzwa n'itanura rishyushya, kandi ubushyuhe bwaryo bushyirwaho n'intoki kandi bugahindurwa mu buryo bwikora. Mu itanura, amatara ya infrared kure atanga imirasire ya infrared kure kugira ngo atange ubushyuhe ku matara, kandi umufana uri hasi mu itanura akora uruziga rw'ubushyuhe kugira ngo ubushyuhe buri mu itanura bube bumwe. Preform zizenguruka mu gihe zigenda imbere mu itanura, ku buryo urukuta rwa preform rushyuha neza.
Imiterere y'amatara mu itanura muri rusange iba mu ishusho ya "zone" kuva hejuru kugeza hasi, menshi ari ku mpera ebyiri naho hagati akaba make. Ubushyuhe bw'itanura bugenzurwa n'umubare w'amatara yaka, imiterere y'ubushyuhe muri rusange, imbaraga z'itanura n'igipimo cy'ubushyuhe cya buri gice. Ifungura ry'umuyoboro w'itara rigomba guhindurwa hamwe n'icupa ritangiye gucurangwa. Kugira ngo itanura rikore neza, guhindura uburebure bwaryo, isahani ikonjesha, nibindi ni ingenzi cyane. Iyo ihinduka ritagenze neza, inenge nko kubyimba umunwa w'icupa (umunwa w'icupa uba munini) n'ijosi rikomeye (ibikoresho byo mu ijosi ntibishobora gukururwa) bikunze kubaho mu gihe cyo gupfuka.
2. Ibintu by'ingenzi mu miterere y'intanga zo mu macupa
Amacupa ya pulasitiki ni yo akoreshwa mu ntangiriro mu gukora. Ibipimo byayo nk'ingano, umugozi n'uburemere ni ingenzi kandi bifitanye isano itaziguye n'intego n'imikorere y'icupa.
Ubwa mbere, ingano y'imashini ikoreshwa mu gupfunyika ni ingenzi cyane ku gipfunyika cya nyuma. Mu gihe cyo kumenya ingano y'imashini ikoreshwa mu gupfunyika, tugomba kubanza gusuzuma icyo icupa rigamije. Ese ni iryo kurya, ibinyobwa, amavuta yo kwisiga cyangwa ibindi bicuruzwa? Imikoreshereze itandukanye ishobora gusaba amacupa afite imiterere n'ubushobozi butandukanye. Mu gusuzuma neza ubushobozi bw'ibicuruzwa, ubushobozi bw'imashini ikoreshwa mu gupfunyika bushobora kumenyekana kandi imiterere ikwiye igatoranywa, nk'uruziga, kare cyangwa uruziga.
Icya kabiri, umugozi (calibre) yerekeza ku murambararo w'umunwa w'icupa kandi ni nacyo gipimo cy'ingenzi. Gupima umugozi byemeza ko igipimo ari gitambitse kugira ngo haboneke ingano nyayo y'umugozi. Ingano y'umugozi igira ingaruka zitaziguye ku buryo icupa ryuzura n'isuka. Ibikoresho bitandukanye bishobora gusaba ingano zitandukanye z'umugozi, bityo mu gihe cyo gushushanya icupa, guhitamo umugozi ku buryo bukwiye ni ngombwa.
Amaherezo, uburemere bwa garama y'icupa busobanura uburemere bw'icupa, harimo n'umubiri w'icupa n'umunwa w'icupa. Uburemere bwa garama y'icupa bushobora gupimwa neza hakoreshejwe gupima cyangwa hakoreshejwe umunzani uzunguruka. Kumenya uburemere bwa garama bifitanye isano itaziguye n'imbaraga n'uburambe bw'icupa. Mu gihe usuzuma uburemere, ni ngombwa kuringaniza imbaraga z'icupa n'igiciro cy'ibikoresho kugira ngo umusaruro wa nyuma ube ufite imbaraga zihagije kandi wujuje ibisabwa mu buryo bworoshye.
Muri rusange, ingano, umugozi n'uburemere bw'icupa rya pulasitiki ni ibintu by'ingenzi bigomba kwitabwaho mu cyiciro cyo gushushanya icupa rya pulasitiki. Binyuze mu gupima neza no guhitamo neza, bishobora kwemeza ko icupa rya nyuma ryujuje ibisabwa n'ibicuruzwa n'amahame ngenderwaho mu nganda kandi rigatanga umusaruro mwiza wo gupfunyika. Mu gihe cyo gukora amacupa, kwita ku kugenzura ibi bipimo bizafasha gukora amacupa ya pulasitiki meza cyane.
Igihe cyo kohereza: Werurwe-27-2025