Zoyala za polyethylene, zomwe nthawi zambiri zimatchedwa ma poly poly, ndimapulasitiki osinthika omwe amapangidwira kuti akhale oyenera pachidebe chapakati chochuluka (FIBC kapena thumba lalikulu). Kulimbana ndi zinthu Zovuta komanso mankhwala nthawi zambiri kumapangitsa chitetezo chambiri. Zoyala zama poly zimagwira ntchito mulimonse momwe zingakhalire ndi zinthu zambiri zovuta. Zapamadzi za poly zingathandize kuteteza thumba lochulukirapo lokha ndi zomwe zili mkati. Ndikofunika kwambiri kunyamula ufa wopezeka womwe umatuluka ndipo kuipitsidwa kumachitika. Phindu la matumba ochulukirapo ophatikizika ndi poly liner ndi monga chotchinga cha oxygen, chotchinga chinyezi, kukana mankhwala, katundu wotsutsana ndi malo amodzi, kutentha kwa kutentha ndi mphamvu yayikulu. kusokedwa, kumangidwa kapena kumata m'thumba.
Mitundu inayi yofala kwambiri yamatumba ndi:
· Zoyala Zotsetsereka: Zimakhala zozungulira mozungulira, zotseguka pamwamba, ndipo pansi nthawi zambiri kutentha kumatsekedwa
· Zingwe za botolo la botolo: Zingwe za botolo la botolo zimapangidwa kuti zigwirizane ndi chikwama chakunja kuphatikiza chala ndi pamwamba
· Zingwe Zapamtunda: Zingwe zopangira mawonekedwe zimapangidwa kuti zigwirizane ndi thumba lakunja kuphatikiza spout pamwamba ndi pansi
· Baffle -inside Liners: Chovalacho chimayikidwa mu FIBC ndipo chimagwiritsa ntchito zotchingira mkati kuti chikhale chofananira ndikutchingira chikwama
Matumba a FIBC okhala ndi zingwe zama poly amagwiritsidwa ntchito kwambiri m'mafakitale osiyanasiyana ndi momwe ntchito za FIBC zikugwiritsidwira ntchito, makamaka msika wazakudya ndi makampani opanga mankhwala omwe mankhwala ake ndi osavuta. Amatha kuphatikizidwa mosavuta ndi ma FIBC kuti apereke zowonjezera zotetezera malonda ndi thumba lambiri kulimbana ndi chinyezi ndi kuipitsidwa.