Chikwama chopangidwa ndi pepala ndi pulasitiki

Kawirikawiri pulasitiki imapangidwa ndi nsalu yolukidwa bwino yokhala ndi PP kapena PE ngati maziko, ndipo kunja kumapangidwa ndi pepala loyera loyeretsedwa la kraft kapena pepala lachikasu la kraft. Pepala la kraft limapangidwa ndi pepala lapadera la kraft loyeretsedwa, lomwe lili ndi mphamvu zambiri, silimalowa madzi bwino komanso limaoneka lokongola. Ndi chimodzi mwa zinthu zodziwika bwino zolongedza ndipo chimagwiritsidwa ntchito kwambiri mu chakudya, zovala, mphatso ndi mafakitale ena. Matumba olongedza a composite amatha kugawidwa m'matumba otsekedwa kumbuyo, matumba otsekedwa mbali zitatu, matumba a organ, matumba oimika zipper, matumba otsekedwa mbali zinayi, matumba opangidwa mawonekedwe apadera, ndi zina zotero.

Chikwama choyimirira chimakutidwa ndi kapangidwe ka PET/foil/PET/PE, ndipo chingakhalenso ndi zinthu zina monga zigawo ziwiri ndi zigawo zitatu. Malinga ndi zinthu zosiyanasiyana zomwe zapakidwa, gawo loteteza mpweya likhoza kuwonjezeredwa ngati pakufunika kuti lichepetse kulowa kwa mpweya ndikuwonjezera nthawi yogwiritsira ntchito.

Pogwiritsa ntchito matumba okhazikika, tayambitsa matumba ambiri okhazikika okhala ndi zitseko zotseguka, omwe ali ndi ubwino wotsatira:

1. Kapangidwe koyima, kakhoza kuyima pa alumali youma, bwalo ndi lathyathyathya, ndipo choyimacho ndi chokhazikika.

2. Zipu yowonjezera yotsekera ikhoza kuwonjezeredwa kuti tipewe vuto loti thumba la ziwalo silingathe kutsekeredwa ndi zipu.

3. Valavu yotulutsa mpweya yochokera mbali imodzi ikhoza kumangiriridwa, yomwe ingagwiritsidwe ntchito m'mafakitale a khofi ndi mafakitale ena okhudzana nawo.

4. Zipangizo zolumikizirana zosinthika zimatha kuphatikizidwa kuti zigwiritse ntchito zinthu zosiyanasiyana zolepheretsa mpweya kudzera m'madzi ndi mpweya zomwe zimapangitsa kuti zinthu zosiyanasiyana zilowerere.