Zamkati thireyi zimagwiritsidwa ntchito kusungira, kuteteza, ndi kukonza zinthu mkati mwa phukusi lakunja.
Zimapereka kapangidwe ndi kukhazikika, makamaka pazinthu zofewa kapena zogawanika.
Zomwe zimagwiritsidwa ntchito nthawi zambiri zimaphatikizapo zida zamagetsi, zodzoladzola, zida zamankhwala, makeke, ndi zida zamafakitale.
Zamkati thireyi nthawi zambiri zimapangidwa ndi zinthu zapulasitiki monga PET , PVC , PS , kapena PP.
Chida chilichonse chili ndi makhalidwe osiyanasiyana: PET ndi chomveka bwino komanso chobwezerezedwanso, PVC ndi chosinthasintha komanso cholimba, PS ndi chopepuka komanso chotsika mtengo, ndipo PP imapereka kukana kwakukulu.
Kusankha kwa zinthu kumadalira momwe mumagwiritsira ntchito komanso zofunikira pa chilengedwe.
Zamkati thireyi ndi zoikamo thireyi zimafanana pa ntchito koma zimasiyana pang'ono pa mawu ndi kagwiritsidwe ntchito.
'zamkati thireyi ' nthawi zambiri zimatanthauza chilichonse thireyi chomwe chimayikidwa mkati mwa phukusi kuti chigwire zinthu, pomwe 'zoikamo thireyi ' nthawi zambiri zimatanthauza chinthu choyenera thireyi chomwe chikugwirizana ndi mawonekedwe enieni a chinthucho.
Zonsezi zimapereka chitetezo cha chinthucho komanso zimapangitsa kuti chiwonekere bwino, makamaka m'mabokosi opakidwa ndi ma blister.
Inde, pulasitiki yamkati thireyi ikhoza kusinthidwa mokwanira kuti ikwaniritse kukula, mawonekedwe, ndi zosowa za malonda anu.
Ma phukusi amkati thireyi apadera amathandizira chitetezo cha malonda komanso zomwe kasitomala amakumana nazo potsegula mabokosi.
Zosankha zimaphatikizapo kuyika chizindikiro, utoto wotsutsana ndi static, zinthu zamitundu yosiyanasiyana, ndi mapangidwe amitundu yambiri.
Zambiri zamkati mwa thireyi zimatha kubwezeretsedwanso, makamaka zomwe zimapangidwa kuchokera ku PET kapena PP.
Pofuna kupititsa patsogolo kukhazikika kwa zinthu, opanga ambiri tsopano amapereka njira zina zosawononga chilengedwe monga RPET kapena zinthu zomwe zimatha kuwola.
Kutaya ndi kubwezeretsanso bwino zinthu kumathandiza kuchepetsa kuwonongeka kwa chilengedwe ndikugwirizana ndi njira zosungiramo zinthu zobiriwira.
Zamkati thireyi zimagwiritsidwa ntchito kwambiri pa zamagetsi, ma CD azachipatala, zodzoladzola, ma CD azakudya, zida zamagetsi, ndi mabokosi amphatso.
Ndi zofunika kwambiri pokonza zinthu bwino ndikuonetsetsa kuti zimakhala bwino pamalo ake panthawi yonyamula kapena kuwonetsa.
Ma blister inner thireyi amapezeka kwambiri m'ma CD ogulitsa kuti awonekere komanso atetezedwe.
Chopangidwa ndi thermoformed inner thireyi chimapangidwa pogwiritsa ntchito ukadaulo wopangira kutentha ndi vacuum.
Mapulasitiki pepala zakuthupi amapangidwa kukhala mawonekedwe enieni kuti agwirizane ndi mawonekedwe a chinthu chanu.
Thermoformed thireyi imapereka kulondola kwambiri, khalidwe logwirizana, ndipo ndi abwino kwambiri popanga zinthu zambiri zoyika thireyi komanso zogulitsa.
Inde, mitundu ya inner thireyi yotsutsana ndi static ndi ESD (Electrostatic Discharge) ikupezeka.
Izi ndizofunikira kwambiri pokonza ma electronics, ma circuit board, ndi ma semiconductors.
Ma thireyi amakonzedwa kapena kupangidwa ndi zinthu zoyendetsera magetsi kuti achotse magetsi osasunthika ndikuletsa kuwonongeka kwa zinthu.
Zamkati thireyi nthawi zambiri zimayikidwa m'matumba ndi kuyikidwa m'makatoni akuluakulu kapena m'matumba apulasitiki.
Njira zopakira zimadalira kapangidwe ka thireyi —zakuya thireyi zitha kuyikidwa m'malo kuti zisunge malo, pomwe zosaya kapena zolimba thireyi zimayikidwa m'magawo.
Kuyika mosamala kumaonetsetsa kuti thireyi imakhalabe ndi mawonekedwe abwino komanso aukhondo panthawi yonyamula.
Inde, zakudya zamkati thireyi zimapangidwa kuchokera ku zinthu monga PET kapena PP ndipo zimagwirizana ndi malamulo a FDA kapena EU.
Zimagwiritsidwa ntchito kwambiri popaka makeke, zidebe za zipatso, nyama thireyi , ndi popaka chakudya chokonzeka kudya.
Izi thireyi ndi zaukhondo, zopanda fungo, komanso zotetezeka kuti chakudya chizikumana mwachindunji.
Gulu la Zamalonda
Tiyeni Tipeze Yankho Loyenera la Pulasitiki