Chikwama chamkati cha thumba mubokosi chimakhala ndi thumba lamafuta losindikizidwa ndi doko lodzaza mafuta lokonzedwa pa thumba la mafuta, ndi chipangizo chosindikizira chokonzedwa pa doko lodzaza; thumba la mafuta limaphatikizapo thumba lakunja ndi thumba lamkati , thumba lamkati limapangidwa ndi zinthu za PE, ndipo thumba lakunja limapangidwa ndi nylon ndi PE. Chikwama chamkati cha chitsanzo chothandizira chimapangidwa ndi zigawo ziwiri: thumba lamkati ndi thumba lakunja, lomwe limapangitsa kusinthasintha ndi makulidwe a thumba lamkati , kapangidwe kake ndi kosavuta komanso koyenera.
Mtundu wina wa thumba lamkati nthawi zambiri ndi opaque flexible thumba thumba, lomwe limapangidwa ndi zigawo ziwiri za zinthu zopanda pake mbali imodzi. Mbali yakunja ndi filimu yophatikizika, ndipo mkati mwake ndi gawo limodzi la PE. Zakunja zosanjikiza zakuthupi nthawi zambiri zimakhala PET/AL/PE, NY/EVOH/PE, PET/VMPET/PE, etc.
Kusankhidwa kwa dongosolo lapaderali makamaka chifukwa chakuti zomwe zili mu phukusi ndi zakumwa zokhala ndi madzi amphamvu. Gawo lina lazinthu likawonongeka, pangakhalenso gawo lachiwiri la chitetezo. Panthawi imodzimodziyo, chitetezo cha zigawo ziwiri za zipangizo zimatha kuchepetsa kutuluka kwa madzi panthawi yoyendetsa. Zili ndi zotsatira zabwino zotetezera pa zotsatira za zipangizo zamathumba.
Nthawi yotumiza: Oct-10-2022