Amacupa yikirahure, hamwe n’umuyaga mwiza cyane hamwe n’imiterere y’imiti, birinda neza kwinjiza ogisijeni n’ubushuhe, birinda guhumeka no kwanduzwa hanze. Ubuso bwazo, buringaniye ntibworoshye kubyitwaramo nibice byumwuka, byemeza ko ububiko bwigihe kirekire - butabuza kwangirika. Ufatanije na caps ya screw, corks, cyangwa kashe ya aluminiyumu, amacupa yikirahure atangiza ibidukikije bihamye, birinda ikirere, bigatuma bikenerwa cyane cyane kubikwa igihe kirekire - gihamye hamwe nimyuka ishaje munsi yumucyo - gihamya, ubushyuhe -.
Mububiko bwimyuka, umwuka wa ogisijeni muke wibikoresho byibirahure bifasha kugumya guhagarara neza kumiterere yumwuka. Guhura cyane na ogisijeni ntibitera guhumeka inzoga gusa ahubwo birashobora no gutera okiside yibigize, bigira ingaruka kuburyohe no kuryoha. Umwanya uhumeka wakozwe n'amacupa yikirahure ugabanya cyane guhana ogisijeni; kurugero, imyuka miremire - yapakiwe mumacupa yikirahure neza kubera umwuka mwinshi mwinshi kugirango ubungabunge imiterere yumwuka, ukomeze impumuro nziza nuburyohe bworoshye nubwo nyuma yigihe kirekire -.
Amacupa yikirahure nayo afite impumuro nziza - ubushobozi bwo guhagarika. Imyuka ifite ubushobozi bukomeye bwa adsorption, kandi niba ububiko bwabitswe budafunze neza, byangizwa nimpumuro mbi yibidukikije. Ikirahure kibuza neza kwinjiza impumuro yo hanze, byemeza neza impumuro nziza. Mubintu bigoye kubika hamwe nimpumuro nyinshi zibangamira, amacupa yikirahure atanga inzitizi yizewe yo kurinda umwuka.
Ikigeretse kuri ibyo, imiterere yumuyaga wibikoresho byibirahure bifasha kugumya guhagarara kwumwuka. Imyuka ifite ibintu bigoye, kandi ihindagurika ryibidukikije rishobora gukurura imiti idakenewe. Sisitemu nziza yo gufunga itanga microen ibidukikije ihoraho kumazi, kugabanya ingaruka zimpinduka zo hanze kumiterere. Ibi nibyingenzi mugukomeza ubuziranenge bwibicuruzwa, byaba umwuka ugenewe kuzenguruka igihe gito - cyangwa igihe kirekire - gusaza, kuko bigira uruhare muburyo bwo kwerekana uburyohe nuburyohe.
