Mathireyi amkati amagwiritsidwa ntchito kusungira, kuteteza, ndi kukonza zinthu mkati mwa phukusi lakunja.
Amapereka kapangidwe ndi kukhazikika, makamaka pazinthu zofewa kapena zogawanika.
Ntchito zofala zimaphatikizapo zida zamagetsi, zodzoladzola, zida zamankhwala, makeke, ndi zida zamafakitale.
Mathireyi amkati nthawi zambiri amapangidwa ndi zinthu zapulasitiki monga PET, PVC, PS, kapena PP.
Chida chilichonse chimakhala ndi makhalidwe osiyanasiyana: PET ndi yoyera komanso yobwezerezedwanso, PVC ndi yosinthasintha komanso yolimba, PS ndi yopepuka komanso yotsika mtengo, ndipo PP imapereka kukana kwakukulu.
Kusankha zinthu kumadalira momwe mumagwiritsira ntchito komanso zomwe mukufuna pa chilengedwe.
Mathireyi amkati ndi mathireyi oikamo zinthu amafanana pa ntchito koma amasiyana pang'ono pa mawu ndi kagwiritsidwe ntchito.
'Thireyi yamkati' nthawi zambiri imatanthauza thireyi iliyonse yomwe imayikidwa mkati mwa phukusi kuti igwire zinthu, pomwe 'thireyi yoikamo zinthu' nthawi zambiri imatanthauza thireyi yoyenera yomwe imagwirizana ndi mawonekedwe enieni a chinthucho.
Zonsezi zimapereka chitetezo cha chinthucho komanso zimapangitsa kuti chiwonekere bwino, makamaka m'maphukusi a ma blister ndi makatoni opindidwa.
Inde, mathireyi amkati apulasitiki amatha kusinthidwa mokwanira kuti akwaniritse kukula, mawonekedwe, ndi zosowa za malonda anu.
Kuyika mathireyi amkati mwapadera kumawonjezera chitetezo cha malonda komanso momwe kasitomala amasinthira zinthu.
Zosankha zimaphatikizapo kukongoletsa ma logo, utoto wotsutsana ndi static, zinthu zamitundu yosiyanasiyana, ndi mapangidwe amitundu yambiri.
Mathireyi ambiri amkati amatha kubwezeretsedwanso, makamaka omwe amapangidwa kuchokera ku PET kapena PP.
Pofuna kukonza kukhazikika kwa zinthu, opanga ambiri tsopano amapereka njira zina zosawononga chilengedwe monga RPET kapena zinthu zomwe zimatha kuwola.
Kutaya ndi kubwezeretsanso zinthu moyenera kumathandiza kuchepetsa kuwonongeka kwa chilengedwe ndikugwirizana ndi njira zosungiramo zinthu zobiriwira.
Mathireyi amkati amagwiritsidwa ntchito kwambiri pa zamagetsi, ma phukusi azachipatala, zodzoladzola, ma phukusi azakudya, zida zama hardware, ndi mabokosi amphatso.
Ndi ofunikira pakukonza zinthu bwino ndikuonetsetsa kuti zimakhala bwino pamalo ake panthawi yonyamula kapena kuwonetsa.
Mathireyi amkati a ma blister ndi ofala kwambiri m'ma phukusi ogulitsa kuti awonekere komanso atetezedwe.
Thireyi yamkati yopangidwa ndi thermoformed imapangidwa pogwiritsa ntchito ukadaulo wopangira kutentha ndi vacuum.
Mapepala apulasitiki amapangidwa kukhala mawonekedwe enieni kuti agwirizane ndi mawonekedwe a chinthu chanu.
Mathireyi opangidwa ndi thermoformed amapereka kulondola kwambiri, khalidwe logwirizana, ndipo ndi abwino kwambiri popanga mathireyi ambiri komanso ma phukusi ogulitsa.
Inde, pali ma tray amkati oletsa kusinthasintha kwa kutentha (anti-static) ndi ESD (Electrostatic Discharge).
Izi ndizofunikira kwambiri pokonza ma electronics, ma circuit board, ndi ma semiconductors.
Ma tray amakonzedwa kapena kupangidwa ndi zinthu zoyendetsera magetsi kuti achotse magetsi osinthasintha ndikuletsa kuwonongeka kwa zinthuzo.
Mathireyi amkati nthawi zambiri amaikidwa m'matumba ang'onoang'ono kapena m'matumba apulasitiki.
Njira zopakira zimadalira kapangidwe ka thireyi—mathireyi akuya amatha kuikidwa m'zipinda kuti asunge malo, pomwe mathireyi osaya kapena olimba amaikidwa m'zigawo.
Kuyika mosamala mathireyi kumatsimikizira kuti amakhalabe aukhondo komanso odekha panthawi yonyamula.
Inde, mathireyi amkati opangidwa ndi zakudya amapangidwa kuchokera ku zinthu monga PET kapena PP ndipo amatsatira malamulo a FDA kapena EU.
Amagwiritsidwa ntchito kwambiri popaka mathireyi ophika buledi, m'zidebe za zipatso, m'mathireyi a nyama, komanso m'mathireyi okonzekera kudya.
Mathireyi awa ndi aukhondo, opanda fungo, komanso otetezeka kuti agwirizane ndi chakudya mwachindunji.