Obere akpa kwụ ọtọ bụ ụdị nkwakọ ngwaahịa ọhụrụ, bụ akpa nkwakọ ngwaahịa jelii. N'iji ya tụnyere ụdị nkwakọ ngwaahịa nkịtị, uru kachasị ukwuu bụ mbugharị, enwere ike itinye akpa akpa akpa n'akpa uwe ma ọ bụ ọbụna akpa, ma nwee ike belata nha ya na mbenata ọdịnaya, na-eme ka ọ dịkwuo mfe ibu. Enwere uru n'ọtụtụ akụkụ dị ka ịkwalite ngwaahịa, ịkwalite mmetụta anya nke shelf, ibugharị, ịdị mfe nke iji, ịdị ọhụrụ na akara akara. Obere akpa nri ụmụaka bụ otu n'ime ngwaahịa kachasị ewu ewu nke DQ PACK, nke emere nke PET/Foil/PET/PE laminated Ọdịdị, yana nwekwara ike ịnwe nkọwapụta ndị ọzọ, dị ka ihe 2-layer na 3-layer, dabere na ngwugwu ngwaahịa, e nwere dị iche iche ihe ịhọrọ site na: PET, PE, NY, AL, PA, VMPET, RCPP, LLDPE, wdg, na ike Dị ka mkpa dịkwuo oxygen mgbochi oyi akwa mkpuchi, ibelata ngwaahịa si oxygen permeability. na ịgbatị ndụ shelf nke ngwaahịa ahụ. Ebe ọ bụ nkwakọ ngwaahịa dị nro, ọ dịghị ihe siri ike ịṅụ mmanya, na ihe ndị dị n'ime ya adịghị mfe ịma jijiji mgbe emechara akara, nke bụ ezigbo nkwakọ ngwaahịa ihe ọṅụṅụ ọhụrụ.
N'asọmpi otu na-apụtawanye ìhè taa, mmelite nke nkwakọ ngwaahịa doro anya bụ otu n'ime ụzọ siri ike nke ndịiche. Obere akpa ma karama PET ugboro ugboro encapsulated na ngwakọta aluminom akwụkwọ nkwakọ ngwaahịa ejiji, kamakwa na nbipụta arụmọrụ nke nkwakọ ngwaahịa ihe ọṅụṅụ ọdịnala na-enweghị atụ, n'ihi ọdịdị bụ isi nke obere akpa kwụ ọtọ nke mere na ebe ngosipụta obere akpa ahụ pụtara nke ukwuu. ibu karịa karama PET, ma dị mma karịa enweghị ike iguzo na ngwugwu Bailey nke ha nke ụdị nkwakọ ngwaahịa. N'ezie, n'ihi ebili elu obere akpa bụ nke Atiya nke mgbanwe nkwakọ, ọ bụghị ọdabara na carbonated ọṅụṅụ nkwakọ, ma na ihe ọṅụṅụ, mmiri ara ehi ngwaahịa, ahụ ike ọṅụṅụ, jelii nri na akụkụ ndị ọzọ nwere pụrụ iche uru.
Oge nzipu: Nov-22-2022