Udzu wosawonongeka kale ukugwiritsidwa ntchito m'malo ambiri ogulitsa zakudya m'malo mwa udzu wapulasitiki.Kukwezeleza ndi kugwiritsa ntchito udzu wowonongeka ndi kufunikira kofunikira.Pakali pano, anthu amadziwa za udzu, zomwe zimagwiritsidwa ntchito m'mafakitale osiyanasiyana ophikira zakudya.Popeza kuti udzu wapulasitiki umakhala ndi zovuta zina zachilengedwe komanso kuwononga chuma, amakhudzidwa kwambiri ndi magawo onse.Ndipotu, mapepala ndi udzuudzu wa biodegradable onse ndi okonda zachilengedwe m'chilengedwe, koma mapesi a mapepala ndi osavuta kufewetsa zakumwa zotentha komansoudzu wa biodegradablendi zopindulitsa kwambiri.

Pakalipano, chinthu china chabwino choteteza chilengedwe cha udzu wapulasitiki chimatchedwa PLA, kapena "polylactic acid".Ndi pulasitiki yosawonongeka yomwe imatha kuchotsedwa ku wowuma wa chimanga.PLA imapangidwa kuchokera ku lactic acid, yomwe ndi zinthu zopangira lactic acid fermentation, kenako imagwiritsidwa ntchito popanga PLA.Njira yeniyeni yopangira ndikuphwanya chimanga, kuchotsa wowuma kuchokera pamenepo, kenako kupanga shuga wosayengedwa kuchokera ku wowuma, ndiyeno kupesa shuga m'njira yofanana ndi kupanga mowa, ndipo glucose akafufuma, amakhala lactic acid wofanana ndi. chakudya zowonjezera, ndi asidi lactic ndi kusandulika wapakatikati mankhwala ndi wapadera ndende ndondomeko munthu lactic asidi.

PLAudzu wa biodegradablekukhala ndi biodegradability yabwino, kuwonongeka kumatulutsa CO2 ndi H2O, osaipitsa chilengedwe, ndipo kumatha kukwaniritsa zofunikira za kompositi yamakampani.Pambuyo kutentha extrusion, udzu ali wabwino kutentha kukana, zabwino zosungunulira kukana, ndi kusalala kwake, kufala kuwala, ndi manja kumverera katundu akhoza m'malo mankhwala mafuta ofotokoza, ndi zizindikiro thupi ndi mankhwala a mankhwala akhoza kukwaniritsa zofunika chitetezo chakudya. padziko lonse lapansi.Chifukwa chake, amagwiritsidwa ntchito kwambiri ndipo amatha kusinthana ndi zosowa za zakumwa zambiri pamsika wapano.

Monga chakumwa pepala udzu katundu, ntchito mu makampani chakudya ndi thanzi chakumwa chake mafakitale kupanga, kuti athe kwathunthu m'malo izo, koyamba pulasitiki udzu ntchito osiyanasiyana, ndi luso akatswiri opanga pepala chubu processing malinga ndi malamulo osiyanasiyana kasitomala, opanga akhoza kutengera zomwe aliyense ali nazo kuti apange mayankho apangidwe ndi kupanga ndi kukonza.Choncho, osati kutalika ndi m'mimba mwake kwa udzu, komanso mtundu ndi mapangidwe apangidwe, zonsezi zikhoza kupangidwa ndikuthetsedwa.