Ihe nchekwa ekwentị adịla kemgbe ọtụtụ iri afọ. Ndochi nke ekwentị mkpanaaka na-aga ngwa ngwa na ngwa ngwa. Ozugbo zụtara ekwentị, a na-etinye ihe nkiri nchebe na ihuenyo. Ọ bụ ezie na mmepụta ihe nkiri ekwentị adịchaghị ka nke ekwentị mkpanaaka, ọ dịla ọtụtụ iri afọ.
Anyị niile maara na onye malitere ihe nchekwa ihuenyo ekwentị mkpanaaka bụ ihe nkiri nchebe PP mbụ pụtara n'ahịa. Ọ nwere àgwà nke hygroscopicity, acid na alkali corrosion eguzogide, na mgbasa na-eguzogide, ma nwekwara ntụpọ dị ka obere njupụta, ala nghọta, ala gloss na ala rigidity.
Ọzọ bụ ihe nkiri nchebe PVC. Ihe PVC dị nro ma dị mfe mado, ma ihe a dị oke ma nwee nnyefe ọkụ na-adịghị mma, na-eme ka foto ahụ dị ka ihe na-adịghị mma. Ọ na-ahapụkwa akara gluu n'ihuenyo mgbe ọ kwụsịrị ya. Ọ ga-emetụtakwa mmetụta ngosi nke ihuenyo. Site na mgbanwe nke okpomọkụ, a ga-enwe ihe ndị na-acha odo odo.
Na seventies , anyị maara nke ọma na PET nchebe film, na PET nchebe film bụkwa mainstream ekwentị mkpanaaka nchebe film ihe na ahịa. Ụdịdị ka mma, na-eguzogide ọkụ karịa, yana ọnụ ala. PET bụ ihe na-emetụta gburugburu ebe obibi yana ihe enwere ike ịmegharị ya. Ụdị ahụ siri ike, elu nwere mgbochi mgbochi siri ike na nkwụsi ike, ezigbo nnyefe ọkụ (karịa 90%), mgbochi ọkụ, na-ezere mgbasa ozi uzuzu.
Ma n'ihi mkpa nke oge na ahịa, ihe nkiri na-ewe iwe malitere. Enwere ihe nkiri ọkụ ndụ ndụ ndụ, ihe nkiri ọkụ na-acha anụnụ anụnụ, ihe nkiri nzuzo, ihe nkiri ọkụ na-acha odo odo, wdg maka mkpa ndị mmadụ. Dịka ọmụmaatụ, ihe nkiri na-acha anụnụ anụnụ tii nwere ihe ndị na-eme ka ìhè na-acha anụnụ anụnụ na-echebe anya; ihe nkiri ọkụ na-acha akwụkwọ ndụ akwụkwọ ndụ nwere njirimara nke mgbochi-acha akwụkwọ ndụ akwụkwọ ndụ, na ihe nkiri nzuzo ahụ nwere ọrụ nke ichebe nzuzo. Ndị a bụ ọrụ kachasị mkpa ha nwere, dị ka mgbawa mgbawa, mgbochi-dobe na mgbochi mkpịsị aka.
Oge nzipu: Eprel-15-2022
