Kugirango wongere igihe cyubuzima bwibintu nkibiryo nibiyobyabwenge, byinshiibikoresho byo gupakirakubiryo nibiyobyabwenge muri iki gihe koresha ibice byinshi bipakira ibintu byinshi. Kugeza ubu, hari ibice bibiri, bitatu, bitanu, birindwi, icyenda, ndetse na cumi na kimwe cyibikoresho byo gupakira. Filime yububiko bwa firime ni firime yoroheje yakozwe mugukuramo ibikoresho byinshi bya pulasitike mu miyoboro myinshi icyarimwe uhereye kumugozi umwe, bishobora gukoresha ibyiza byibikoresho bitandukanye
Igice kininigupakira firimebigizwe ahanini na polyolefin ikomatanya. Kugeza ubu, inzego zikunze gukoreshwa zirimo: polyethylene / polyethylene, polyethylene Ethylene vinyl acetate copolymer / polypropylene, LDPE / igipande / EVOH / igipande / LDPE, LDPE / igipande / EVH / EVOH / EVOH / igipande / LDPE. Ubunini bwa buri cyiciro burashobora guhindurwa hifashishijwe tekinoroji yo gukuramo. Muguhindura ubunini bwurwego rwa bariyeri no gukoresha ibikoresho bitandukanye bya barrière, firime zoroshye zifite imiterere ya bariyeri zitandukanye zirashobora gutegurwa. Ibikoresho bifunga ubushyuhe birashobora kandi gusimburwa byoroshye kandi bigahinduka kugirango bikemurwe. Ibi bikoresho byinshi kandi bipfunyika byinshi hamwe nicyerekezo nyamukuru cyo guteza imbere ibikoresho byo gupakira muri kazoza.
Ibikoresho byinshi bipfunyika bigizwe na firime
Igice kinini cyo gupakira ibintu byinshi, tutitaye ku mubare wabyo, muri rusange bigabanijwemo ibice fatizo, urwego rukora, hamwe n’ibiti bifatika bishingiye ku mikorere ya buri gice cya firime.
Urwego shingiro
Mubisanzwe, ibice byimbere ninyuma ya firime ikomatanya igomba kuba ifite imiterere myiza yumubiri nubukanishi, ikora imikorere yo gutunganya, hamwe nubushyuhe bwo gufunga ubushyuhe. Irakeneye kandi kugira ubushyuhe bwiza bwo gufunga ubushyuhe hamwe nubushuhe bwo gusudira bushyushye, buhendutse cyane, bufite inkunga nziza ningaruka zo kugumana kurwego rukora, kandi bukagira uruhare runini muri firime ikomatanya, bikagaragaza ubukana muri rusange bwa firime. . Ibikoresho fatizo ni PE, PP, EVA, PET, na PS.
Imikorere
Urwego rukora rwafirime yo gupakira ibiryoni cyane cyane kuri bariyeri, mubisanzwe hagati ya firime igizwe nibice byinshi, cyane cyane ikoresheje inzitizi nka EVOH, PVDC, PVA, PA, PET, nibindi. Muri byo, ibikoresho bikoreshwa cyane kuri bariyeri ni EVOH na PVDC , hamwe na PA hamwe na PET basanzwe bafite inzitizi zisa, zijyanye nibikoresho byo hagati.
EVOH (Ethylene vinyl inzoga copolymer)
Ethylene vinyl alcool copolymer nigikoresho cya polymer gihuza imikorere ya polimeri ya Ethylene hamwe nimbogamizi ya gaze ya polimeri ya Ethylene. Irasobanutse cyane kandi ifite gloss nziza. EVOH ifite inzitizi nziza kuri gaze n'amavuta, hamwe n'imbaraga zidasanzwe za mashini, elastique, kwihanganira kwambara, kurwanya ubukonje, n'imbaraga zo hejuru, hamwe nibikorwa byiza byo gutunganya. Inzitizi ya barrière ya EVOH iterwa nibirimo Ethylene. Iyo Ethylene yiyongereye, imikorere ya bariyeri iragabanuka, ariko imikorere yo kurwanya ubushuhe iriyongera, kandi biroroshye kuyitunganya.
Ibicuruzwa bipakiye hamwe nibikoresho bya EVOH birimo ibirungo, ibikomoka ku mata, ibikomoka ku nyama, ibicuruzwa bya foromaje, nibindi.
PVDC (polyvinylidene chloride)
Polyvinylidene chloride (PVDC) ni polymer ya vinylidene chloride (1,1-dichloroethylene). Ubushyuhe bwo kubora bwa homopolymer PVDC buri munsi yumwanya wabwo, bigatuma bigorana gushonga. Kubwibyo, nkibikoresho byo gupakira, PVDC ni kopolymer ya vinylidene chloride na vinyl chloride, ifite umuyaga mwiza, irwanya ruswa, icapiro ryiza hamwe nubushuhe bwo gufunga ubushyuhe.
Mu minsi ya mbere, yakoreshwaga cyane mu gupakira igisirikare. Mu myaka ya za 1950, yatangiye gukoreshwa nka firime yo kubungabunga ibiribwa, cyane cyane hamwe n’iterambere ryihuse ry’ikoranabuhanga rigezweho ryo gupakira hamwe n’imibereho y’abantu ba kijyambere, gupakira vuba no kubika ibicuruzwa, impinduramatwara y’ibikoresho bitetse microwave, no kwagura ibiryo na ubuzima bwibiyobyabwenge bwatumye porogaramu ya PVDC ikundwa cyane. PVDC irashobora gukorwa muri firime ultra-thin, kugabanya umubare wibikoresho fatizo nigiciro cyo gupakira. Biracyakunzwe muri iki gihe
Igice gifatika
Bitewe nubusabane bubi hagati yububiko bumwe na bumwe bwimikorere, birakenewe ko dushyira ibice bimwe bifatanye hagati yibi byiciro byombi kugirango bikore kole kandi bigire firime ihuriweho. Igice gifatika gikoresha resinifike, gikunze gukoreshwa harimo polyolefine yashizwemo na anhydride ya manic na Ethylene vinyl acetate copolymer (EVA).
Anhydride yumugabo yashizwemo polyolefine
Anhydride yumugabo yashizwemo polyolefine ikorwa muguhuza anhydride yumugabo kuri polyethylene binyuze mumashanyarazi, ikazana amatsinda yimpande kumurongo utari inkingi. Nibifatika hagati yibikoresho bya polar na polar kandi bikunze gukoreshwa muri firime igizwe na polyolefine nka polypropilene na nylon.
EVA (Ethylene vinyl acetate copolymer)
EVA yinjiza vinyl acetate monomer mumurongo wa molekile, igabanya kristu ya polyethylene no kunoza imikorere no gufunga ubushyuhe bwuzuza. Ibirimo bitandukanye bya Ethylene na vinyl acetate mubikoresho bivamo ibisubizo bitandukanye:
Products Ibicuruzwa byingenzi bya EVA bifite Ethylene acetate iri munsi ya 5% ni ibifatika, firime, insinga ninsinga, nibindi;
Products Ibicuruzwa byingenzi bya EVA bifite vinyl acetate ya 5% ~ 10% ni firime ya elastique, nibindi;
Products Ibicuruzwa byingenzi bya EVA bifite vinyl acetate ya 20% ~ 28% ni ibishishwa bishyushye hamwe nibicuruzwa bitwikiriye;
Products Ibicuruzwa byingenzi bya EVA bifite vinyl acetate ya 5% ~ 45% ni firime (harimo na firime yubuhinzi) nimpapuro, ibicuruzwa bibumbwe inshinge, ibicuruzwa byinshi, nibindi.
Igihe cyo kohereza: Jun-12-2024