Filime yo gupakirani kimwe mu bikoresho byingenzi bipfunyika. Hariho ubwoko bwinshi bwa firime ipakira plastike ifite imiterere itandukanye, kandi imikoreshereze yabo iratandukanye ukurikije imiterere itandukanye ya firime.
Gupakira firime ifite ubukana bwiza, irwanya ubushuhe, hamwe nubushuhe bwo gufunga ubushyuhe, kandi irakoreshwa cyane: firime yo gupakira PVDC irakwiriye gupakira ibiryo kandi irashobora gukomeza gushya igihe kirekire; Kandi firime yamashanyarazi ya PVA yamashanyarazi irashobora gukoreshwa udafunguye ugashyirwa mumazi; Filime ipakira PC nta mpumuro nziza, idafite uburozi, ifite umucyo kandi urabagirana bisa nimpapuro zikirahure, kandi birashobora guhindurwa no guhindurwa mugihe cy'ubushyuhe bwinshi nigitutu.
Mu myaka yashize, isi yose ikenera firime yo gupakira plastike yerekanye inzira ikomeza kuzamuka, cyane cyane ko impapuro zipakira zikomeje kuva mubipfunyika bikabapakira byoroshye. Iki nicyo kintu nyamukuru gitera kwiyongera kubikenerwa byo gupakira ibikoresho bya firime. None, uzi ubwoko nikoreshwa rya firime yo gupakira? Iyi ngingo izerekana ahanini imiterere nimikoreshereze ya firime nyinshi zo gupakira
1. Filime yo gupakira polyethylene
PE ipakira firime ni firime ikoreshwa cyane mububiko bwa plastike, bingana na 40% byikoreshwa rya firime yuzuye. Nubwo PE ipakira firime idakwiye muburyo bugaragara, imbaraga, nibindi, ifite ubukana bwiza, irwanya ubushuhe, hamwe nubushuhe bwo gufunga ubushyuhe, kandi biroroshye gutunganya no gukora kubiciro buke, bityo irakoreshwa cyane.
a. Ubucucike buke bwa polyethylene.
LDPE ipakira firime ikorwa cyane cyane na extrusion blow molding hamwe na T-mold. Ni firime yoroheje kandi ibonerana ibipfunyika bidafite uburozi kandi bidafite impumuro nziza, hamwe nubunini muri rusange hagati ya 0.02-0.1mm. Ifite amazi meza, irwanya ubushuhe, irwanya amapfa, hamwe n’imiti ihamye. Umubare munini wibikoresho bitarimo ubushuhe hamwe nibipfunyika byibiribwa bikoreshwa mubiribwa, imiti, ibikenerwa bya buri munsi, nibicuruzwa byuma. Ariko kubintu bifite ubwinshi bwamazi menshi hamwe nibisabwa birwanya ubushyuhe bwinshi, firime nziza yo gupakira neza hamwe na firime zo gupakira zigomba gukoreshwa mubipakira. Filime yo gupakira LDPE ifite umwuka mwinshi, ntugumane impumuro nziza, hamwe no kurwanya amavuta mabi, bigatuma bidakwiriye gupakira ibiryo byoroshye okiside, uburyohe, namavuta. Ariko guhumeka kwayo bituma bikwiranye no gupakira ibintu bishya nkimbuto n'imboga. Filime yo gupakira LDPE ifite ubushyuhe bwiza hamwe nubushyuhe bwo hasi bwo gufunga ubushyuhe, kuburyo bukunze gukoreshwa nkigikoresho gifatika hamwe nubushyuhe bwo gufunga ubushyuhe bwa firime zipakira. Ariko, kubera ubushyuhe buke bwayo, ntishobora gukoreshwa nkurwego rwo gufunga ubushyuhe mumifuka yo guteka.
b. Ubucucike bukabije bwa polyethylene. Filime yo gupakira ya HDPE ni firime itoroshye yo gupakira ibintu bifite amata yera kandi yuzuye ububengerane. Filime yo gupakira ya HDPE ifite imbaraga zingana, kurwanya ubushuhe, kurwanya ubushyuhe, kurwanya amavuta, hamwe n’imiti ihamye kuruta firime ya LDPE. Irashobora kandi gushyirwaho ubushyuhe, ariko gukorera mu mucyo ntabwo ari byiza nka LDPE. HDPE irashobora gukorwa muri firime yoroheje ipakira hamwe nubunini bwa 0.01mm. Isura yacyo isa cyane nimpapuro zoroshye zoroshye, kandi irumva neza gukoraho, izwi kandi nkimpapuro nka firime. Ifite imbaraga nziza, gukomera, no gufungura. Kuzamura impapuro nko kumva no kugabanya ibiciro, umubare muto wa calcium karubone yoroheje irashobora kongerwamo. Filime yimpapuro ya HDPE ikoreshwa cyane mugukora imifuka itandukanye yo guhaha, imifuka yimyanda, imifuka ipakira imbuto, nudukapu twinshi two gupakira ibiryo. Bitewe n'umuyaga muke no kubura impumuro nziza, igihe cyo guhunika ibiryo bipfunyitse ntabwo ari kirekire. Byongeye kandi, firime ya HDPE ipakira irashobora gukoreshwa nkurwego rwo gufunga ubushyuhe kumifuka yo guteka kubera kurwanya ubushyuhe bwiza.
c. Umurongo muto-wuzuye wa polyethylene ipakira.
Filime yo gupakira LLDPE ni ubwoko bushya bwa firime ya polyethylene. Ugereranije na firime yo gupakira LDPE, firime ya LLDPE ipakira ifite imbaraga nyinshi kandi zikomeye, imbaraga zamarira, hamwe no kwihanganira gucumita. Hamwe n'imbaraga hamwe na firime imwe ya LDPE, ubunini bwa firime ya LLDPE irashobora kugabanuka kugera kuri 20-25% ya firime yo gupakira LDPE, bityo bikagabanya cyane ibiciro. Ndetse iyo ikoreshejwe nkumufuka uremereye, ubunini bwayo bugomba kuba 0.1mm kugirango bwuzuze ibisabwa, bushobora gusimbuza polymer ihenze cyane ya polyethylene. Kubwibyo, LLDPE irakwiriye cyane kubikenerwa bya buri munsi, gupakira ibiryo bikonje, kandi ikoreshwa cyane nkimifuka iremereye hamwe n imifuka yimyanda.
2. Filime yo gupakira polipropilene
PP ipakira ya firime igabanijwemo firime idapakurura hamwe na firime irambuye. Ubwoko bubiri bwa firime ipakira bifite itandukaniro rinini mubikorwa, bityo bigomba gufatwa nkubwoko bubiri butandukanye bwa firime.
1) Filime ipakira ya polipropilene.
Filime ipakirwa ya polypropilene ikubiyemo firime ipakira polypropilene (IPP) yakozwe nuburyo bwo gukuramo ibicuruzwa hamwe na firime ya polypropilene ipakira (CPP) yakozwe nuburyo bwa T-mold. Gukorera mu mucyo no gukomera bya firime ya PP bipakira ni bibi; Kandi ifite gukorera mu mucyo no gukomera. Filime yo gupakira CPP ifite umucyo mwiza nuburabyo, kandi isura yayo isa niy'impapuro. Ugereranije na PE ipakira, firime ya polipropilene idapakurura ifite umucyo mwiza, ububengerane, kurwanya ubushuhe, kurwanya ubushyuhe, no kurwanya amavuta; Imbaraga zikomeye za mashini, kurwanya amarira meza, kwihanganira gucumita, no kwambara; Kandi ntabwo ari uburozi kandi nta mpumuro nziza. Kubwibyo, ikoreshwa cyane mugupakira ibiryo, imiti, imyenda nibindi bintu. Ariko ifite amapfa mabi kandi ihinduka 0-10 ℃, ntishobora rero gukoreshwa mugupakira ibiryo bikonje. Firime idapakiye ya polipropilene ifite firime irwanya ubushyuhe bwinshi kandi ikora neza yo gufunga ubushyuhe, kubwibyo ikoreshwa cyane nkurwego rwo gufunga ubushyuhe mumifuka yo guteka.
2) Biaxally yerekanwe polypropilene ipakira firime (BOPP).
Ugereranije na firime yo gupakira ya polipropilene idasobanutse, firime yo gupakira BOPP ifite ahanini ibi bikurikira: ① Kunoza gukorera mu mucyo no kurabagirana, ugereranije nimpapuro zibirahure; Strength Imbaraga za mashini ziriyongera, ariko kuramba biragabanuka; Kunoza ubukonje bukabije kandi nta buryarya nubwo bwakoreshejwe kuri -30 ~ -50 ℃; Moisture Ubushuhe bw’amazi hamwe n’imyuka yo mu kirere bigabanukaho hafi kimwe cya kabiri, kandi imyuka y’umwuka kama nayo igabanuka ku buryo butandukanye; Film Filime imwe ntishobora gushyirwaho ubushyuhe butaziguye, ariko imikorere yayo yo gufunga ubushyuhe irashobora kunozwa mugusiga hamwe nizindi firime zipakira plastike.
Filime yo gupakira BOPP ni ubwoko bushya bwa firime yo gupakira yakozwe kugirango isimbuze impapuro. Ifite ibiranga imbaraga zo mu rwego rwo hejuru, gukomera kwiza, gukorera mu mucyo no kurabagirana. Igiciro cyacyo kiri munsi ya 20% ugereranije nimpapuro zikirahure. Yasimbuye rero cyangwa yasimbuye igice cy'ikirahure mubipfunyika ibiryo, imiti, itabi, imyenda, nibindi bicuruzwa. Ariko ubuhanga bwayo buri hejuru kandi ntibushobora gukoreshwa mugupakira bombo. BOPP ipakira firime ikoreshwa cyane nkibikoresho fatizo bya firime yo gupakira. Amafirime yo gupakira yakozwe muri aluminiyumu hamwe nandi mafirime apakira plastike arashobora kuba yujuje ibyangombwa byo gupakira ibintu bitandukanye kandi byarakoreshejwe cyane.
3. Polyvinyl chloride ipakira
Filime yo gupakira PVC igabanijwemo firime yoroheje yo gupakira hamwe na firime ikomeye. Kurambura, kurwanya amarira, no kurwanya ubukonje bwa firime ya PVC yoroshye ni byiza; Biroroshye gucapa no gushyushya kashe; Irashobora gukorwa muri firime ipakira neza. Bitewe numunuko wa plasitike hamwe no kwimuka kwa plasitike, firime yoroheje ya PVC ipakira ntabwo isanzwe ibereye gupakira ibiryo. Ariko firime yoroheje yo gupakira PVC yakozwe nuburyo bwimbere bwa plastike irashobora gukoreshwa mugupakira ibiryo. Muri rusange, PVC yoroheje yo gupakira ikoreshwa cyane mubicuruzwa byinganda no gupakira ibiryo.
Filime ikomeye ya PVC ipakira, ikunze kwitwa PVC impapuro. Gukorera mu mucyo mwinshi, gukomera, gukomera, no kugoreka bihamye; Ifite umwuka mwiza, kugumana impumuro nziza, no kurwanya ubushuhe bwiza; Imikorere myiza yo gucapa, irashobora kubyara firime idafite uburozi. Ikoreshwa cyane cyane mubipfunyika bya bombo, gupakira imyenda n'imyambaro, hamwe na firime yo gupakira hanze itabi hamwe nudusanduku two gupakira ibiryo. Nyamara, PVC ikomeye irwanya ubukonje bukabije kandi igacika intege kubushyuhe buke, bigatuma idakwiriye nkibikoresho byo gupakira ibiryo byafunzwe.
4. Filime yo gupakira polystirene
Filime yo gupakira PS ifite umucyo mwinshi nuburabyo, isura nziza, nibikorwa byiza byo gucapa; Kwinjiza amazi make no gutwarwa cyane na gaze hamwe numwuka wamazi. Amapaki ya polystirene adafunitse arakomeye kandi aravunitse, hamwe no kwaguka gake, imbaraga zingana, hamwe no kurwanya ingaruka, kubwibyo ntibikunze gukoreshwa nkibikoresho byo gupakira byoroshye. Ibikoresho nyamukuru bipfunyika bikoreshwa ni biaxally yerekanwe polystirene (BOPS) ipakira hamwe na firime ikurura ubushyuhe.
Filime yo gupakira ya BOPS yakozwe no kurambura biaxial yazamuye cyane imiterere yumubiri nubukanishi, cyane cyane kurambura, imbaraga zingaruka, no gukomera, mugihe ikomeje gukorera mu mucyo no kurabagirana kwayo. Guhumeka neza kwa firime yo gupakira BOPS ituma bikwiranye cyane no gupakira ibiryo bishya nk'imbuto, imboga, inyama n'amafi, ndetse n'indabyo.
5. Polyvinylidene ya chloride ipakira
Firime yo gupakira ya PVDC ni firime yoroheje, ibonerana, kandi yuzuye inzitizi. Ifite ubudahangarwa bw'amazi, ubukana bw'ikirere, hamwe no kubika impumuro nziza; Kandi ifite imbaraga zo kurwanya aside ikomeye, alkalis ikomeye, imiti, namavuta; Firime idapakurura PVDC irashobora gufungwa ubushyuhe, bukwiranye cyane no gupakira ibiryo kandi birashobora gukomeza uburyohe bwibiryo bidahindutse igihe kirekire.
Nubwo firime ya PVDC ipakira ifite imbaraga zubukanishi, ubukana bwayo ni bubi, iroroshye cyane kandi ikunda gufatana, kandi imikorere yayo ni mibi. Byongeye kandi, PVDC ifite kristu ikomeye, kandi firime yayo ipakira ikunda gutobora cyangwa microcrack, hamwe nigiciro cyayo kinini. Kugeza ubu, firime ya PVDC yo gupakira ntabwo ikoreshwa cyane muburyo bwa firime imwe kandi ikoreshwa cyane mugukora firime yo gupakira.
6. Ethylene vinyl acetate copolymer ipakira firime
Imikorere ya firime ya EVA ipakira ifitanye isano nibiri muri vinyl acetate (VA). Iyo urwego rwa VA ruri hejuru, niko bigenda neza, birwanya ubukana, guhangana nubushyuhe buke, hamwe nubushyuhe bwo gufunga ubushyuhe bwa firime. Iyo ibikubiye muri VA bigeze kuri 15% ~ 20%, imikorere ya firime yo gupakira iba hafi yiyi firime yoroheje ya PVC. Hasi yibirimo VA, firime yo gupakira ntago byoroshye, kandi imikorere yayo yegereye firime ya LDPE. Ibiri muri VA muri rusange firime ya EVA ipakira ni 10% ~ 20%.
Filime yo gupakira ya EVA ifite ubushyuhe buke bwo gufunga ubushyuhe hamwe no gushyiramo kashe, bigatuma iba firime nziza yo gufunga kandi ikunze gukoreshwa nkurwego rwo gufunga ubushyuhe bwa firime zipakira. Ubushyuhe bwa firime ipakira ya EVA ni mibi, hamwe nubushyuhe bwo gukoresha bwa 60 ℃. Umuyaga wacyo urakennye, kandi ukunda gukomera no kunuka. Filime imwe yo gupakira ya EVA mubisanzwe ntabwo ikoreshwa muburyo bwo gupakira ibiryo.
7. Filime yo gupakira inzoga ya polyvinyl
Firime yo gupakira PVA igabanijwemo firime idashobora kwihanganira amazi hamwe na firime yo gupakira amazi. Firime yapakira amazi ikozwe muri PVA ifite polymerisation irenga 1000 kandi saponification yuzuye. Firime yamashanyarazi yamashanyarazi ikozwe muri PVA igice cya saponifike hamwe na degrime nkeya. Filime nyamukuru yo gupakira ikoreshwa ni firime yamashanyarazi ya PVA.
PVA ipakira firime ifite umucyo mwiza nuburabyo, ntabwo byoroshye kwegeranya amashanyarazi ahamye, ntabwo byoroshye gukuramo adsorb ivumbi, kandi ifite imikorere myiza yo gucapa. Ifite umwuka muke no kugumana impumuro nziza yumutse, kandi irwanya amavuta meza; Ifite imbaraga zumukanishi, gukomera, hamwe no guhangana ningutu; Birashobora gushyirwaho ikimenyetso; PVA ipakira firime ifite ubushyuhe bwinshi, kwinjiza cyane, nubunini budahungabana. Ubusanzwe, polyvinylidene chloride ikingira, izwi kandi nka K coating, isanzwe ikoreshwa. Iyi firime ipakiye PVA irashobora kugumana umwuka mwiza cyane, kugumana impumuro nziza, hamwe no kurwanya ubushuhe nubwo haba hari ubuhehere bwinshi, bigatuma bikenerwa cyane no gupakira ibiryo. Filime yo gupakira PVA isanzwe ikoreshwa nkinzitizi ya firime yo gupakira ibintu, ikoreshwa cyane mugupakira ibiryo byihuse, ibikomoka ku nyama, ibikomoka ku mavuta nibindi biribwa. PVA firime imwe nayo ikoreshwa cyane mugupakira imyenda n imyenda.
Amazi ya elegitoronike yo gupakira PVA arashobora gukoreshwa mugupima ibipfunyika byibicuruzwa nkimiti yica udukoko, imiti yangiza, imiti yangiza, amarangi, imiti yica udukoko, nudukapu two kumesa. Irashobora gushirwa mumazi mu buryo butaziguye.
8. Filime yo gupakira Nylon
Filime yo gupakira Nylon ikubiyemo ubwoko bubiri: firime irambuye ya biaxial irambuye hamwe na firime yo gupakira itarambuye, muribwo buryo bukoreshwa cyane muri firime ya nylon ipakira (BOPA). Filime idapakurura nylon ifite uburebure budasanzwe kandi ikoreshwa cyane muburyo bwo gupakira ibintu byimbitse.
Filime yo gupakira Nylon ni firime ikomeye cyane yo gupakira idafite uburozi, impumuro nziza, ikorera mu mucyo, irabagirana, idakunda kwegeranya amashanyarazi ahamye, kandi ifite imikorere myiza yo gucapa. Ifite imbaraga zo gukanika, inshuro eshatu imbaraga zingana za firime ya PE ipakira, hamwe no kwihanganira kwambara no guhangana. Filime yo gupakira Nylon ifite ubushyuhe bwiza, irwanya ibyuya, hamwe n’amavuta, ariko biragoye gushyushya kashe. Filime yo gupakira Nylon ifite umwuka mwiza muburyo bwumutse, ariko ifite ubushyuhe bwinshi kandi bwinjira mumazi. Ahantu h’ubushuhe buhebuje, umutekano uhagaze ni muke kandi umuyaga uragabanuka cyane. Kubwibyo, polyvinylidene ya chloride ikingira (KNY) cyangwa ikomatanya hamwe na firime ipakira PE ikoreshwa mugutezimbere amazi yayo, kurwanya ubushuhe, hamwe nubushuhe bwo gufunga ubushyuhe. Iyi firime ya NY / PE ikomatanya ikoreshwa cyane mubipfunyika ibiryo. Gupakira Nylon bikoreshwa cyane mugukora firime zipakira hamwe kandi nka substrate ya firime ya aluminiyumu.
Filime yo gupakira Nylon hamwe na firime yayo yo gupakira ikoreshwa cyane mugupakira ibiryo birimo amavuta, ibiryo rusange, ibiryo bikonje, nibiryo byumye. Filime idapakurura nylon, kubera igipimo cyayo kirekire, irashobora gukoreshwa mugupakira vacuum inyama ziryoshye, inyama zamagufwa menshi nibindi biribwa.
9. Ethylene vinyl inzoga copolymerGupakira
EVAL packaging film nubwoko bushya bwa barrière yo gupakira ibintu byakozwe mumyaka yashize. Ifite umucyo mwiza, inzitizi ya ogisijeni, kugumana impumuro nziza, hamwe no kurwanya amavuta. Ariko hygroscopicity yayo irakomeye, igabanya imiterere ya barrière nyuma yo gukuramo ubuhehere.
EVAL yamashanyarazi isanzwe ikorwa muri firime igizwe hamwe nibikoresho birwanya ubushuhe, bikoreshwa mugupakira ibikomoka ku nyama nka sosiso, ham, nibiryo byihuse. EVAL firime imwe irashobora kandi gukoreshwa mugupakira ibicuruzwa bya fibre nibicuruzwa byubwoya.
10. Filime yo gupakira polyester ikozwe muri biaxial yerekanwe na polyester ipakira (BOPET).
PET ipakira firime ni ubwoko bwa firime ipakira hamwe nibikorwa byiza. Ifite umucyo mwiza kandi urabagirana; Ifite umwuka mwiza no kugumana impumuro nziza; Kurwanya ubuhehere buringaniye, hamwe no kugabanuka kwamazi yubushyuhe buke. Imiterere yubukorikori bwa PET ipakira ni nziza, kandi imbaraga zayo nubukomezi nibyiza muri plastiki zose za termoplastique. Imbaraga zayo zingufu nimbaraga zayo zirarenze cyane izo muri firime zipakira muri rusange; Kandi ifite ubukana bwiza nubunini buhamye, ibereye gutunganya kabiri nko gucapa nimpapuro. PET ipakira firime nayo ifite ubushyuhe bwiza nubukonje bukabije, hamwe nubushakashatsi bwiza bwamavuta namavuta. Ariko ntabwo irwanya alkali ikomeye; Biroroshye gutwara amashanyarazi ahamye, ntaburyo bukwiye bwo kurwanya anti-static, bityo rero hagomba kwitonderwa mugihe cyo gupakira ibintu byifu.
Ubushyuhe bwo gufunga firime ya PET biragoye cyane kandi birahenze, kubwibyo ntibikunze gukoreshwa muburyo bwa firime imwe. Byinshi muribi bigizwe na firime ya PE cyangwa PP ifite ibikoresho byiza byo gufunga ubushyuhe cyangwa bisizwe na chloride polyvinylidene. Iyi firime yo gupakira igizwe na firime ya PET ipakira nibikoresho byiza mubikorwa byo gupakira imashini kandi ikoreshwa cyane mubipfunyika ibiryo nko guhumeka, guteka, no gukonjesha.
11. Filime yo gupakira polyakarubone
Filime yo gupakira PC ntabwo ihumura kandi ntabwo ifite uburozi, hamwe no gukorera mu mucyo no kumurika bisa nimpapuro zibirahure, kandi imbaraga zayo ziragereranywa na PET ipakira paki na firime ya BONY, cyane cyane irwanya ingaruka zidasanzwe. Filime ipakira PC ifite impumuro nziza cyane, guhumeka neza kwikirere no kurwanya ubushuhe, hamwe no kurwanya UV nziza. Ifite amavuta meza yo kurwanya; Ifite kandi ubushyuhe bwiza no kurwanya ubukonje. Irashobora guhumeka no guhindagurika munsi yubushyuhe bwinshi n'umuvuduko mwinshi; Kurwanya ubushyuhe buke no kurwanya ubukonje nibyiza kuruta PET ipakira. Ariko imikorere yacyo yo gufunga ubushyuhe ni mibi.
Filime yo gupakira PC ni ibikoresho byiza byo gupakira ibiryo, bishobora gukoreshwa mugupakira ibiryo byumye, bikonje, nibiryoheye. Kugeza ubu, kubera igiciro cyayo kinini, ikoreshwa cyane mugupakira ibinini bya farumasi no gupakira sterile.
12. Acetate ya selile ipakira
CA ipakira firime iragaragara, irabagirana, kandi ifite ubuso bunoze. Birakomeye, bihamye mubunini, ntabwo byoroshye kwegeranya amashanyarazi, kandi bifite imikorere myiza; Biroroshye guhuza kandi bifite icapiro ryiza. Kandi ifite amazi arwanya amazi, irwanya igabanuka, kandi iramba. Umwuka woguhumeka hamwe nubushuhe bwa firime ya CA ipakira ni ndende cyane, ishobora gukoreshwa mugupakira "guhumeka" gupakira imboga, imbuto, nibindi bintu.
CA ipakira ya firime isanzwe ikoreshwa nkigice cyo hanze cya firime igizwe nububiko kubera isura nziza kandi yoroshye yo gucapa. Firime yuzuye yo gupakira ikoreshwa cyane mugupakira ibiyobyabwenge, ibiryo, amavuta yo kwisiga nibindi bintu.
13. Ionic ihuza polymergupakira firime
Gukorera mu mucyo no kurabagirana kwa ion bipfunyitse polymer bipakira neza biruta ibya firime ya PE, kandi ntabwo ari uburozi. Ifite umwuka mwiza, kworoha, kuramba, kwihanganira gucumita, no kurwanya amavuta. Birakwiriye gupakira ibintu byinguni no kugabanya ubushyuhe bwo gupakira ibiryo. Ubushyuhe bwo hasi yubushyuhe bwo gukora neza nibyiza, ubushyuhe bwo gufunga ubushyuhe buragutse, kandi imikorere yo gufunga ubushyuhe iracyari nziza nubwo harimo, bityo rero ikoreshwa muburyo bwo gufunga ubushyuhe bwa firime zipakira. Byongeye kandi, ion ihujwe na polymers ifite ifumbire mvaruganda nziza kandi irashobora gukururwa hamwe nibindi bikoresho bya plastiki kugirango ikore firime zipakira.
Igihe cyo kohereza: Gashyantare-11-2025