A na-ekewa plastik ọkwa nri n'ime: PET (polyethylene terephthalate), HDPE (polyethylene njupụta dị elu), LDPE (polyethylene density dị ala), PP (polypropylene), PS (polystyrene), PC na ụdị ndị ọzọ.

PET (polyethylene terephthalate)

Ihe a na-ejikarị eme ihe: karama mmiri ịnweta, karama ihe ọṅụṅụ carbonated, wdg.
A na-eji ihe a eme karama mmiri ịnweta mmiri na karama ihe ọṅụṅụ carbonated.Enweghị ike ịmegharị karama ihe ọṅụṅụ maka mmiri ọkụ, ihe a na-eguzogide okpomọkụ ruo 70 Celsius.Ọ dị mma naanị maka ihe ọ drinkụ drinkụ ọkụ na-ekpo ọkụ ma ọ bụ nke oyi kpọnwụrụ, ọ na-enwekwa nrụrụ ngwa ngwa mgbe ejiri mmiri mmiri dị elu ma ọ bụ kpoo ọkụ, yana ihe na-emerụ ahụ mmadụ na-apụ apụ.Ọzọkwa, ndị ọkà mmụta sayensị achọpụtala na mgbe ọnwa 10 ejiri ya, ngwaahịa rọba a nwere ike ịhapụ carcinogens nke na-egbu mmadụ.

N'ihi nke a, a ga-atụfu karama ihe ọṅụṅụ mgbe emechara ma ghara iji ya dị ka iko ma ọ bụ ihe nchekwa maka ihe ndị ọzọ iji zere nsogbu ahụike.
Ebu ụzọ jiri PET mee ihe dị ka eriri sịntetik, yana na fim na teepu, naanị na 1976 ka ejiri ya na karama ihe ọṅụṅụ.Ejiri PET mee ihe dị ka ihe ndochi n'ihe a na-akpọkarị 'karama PET'.

Kalama PET nwere ike siri ike na nke siri ike, dị ọkụ (naanị 1/9 ruo 1/15 nke ịdị arọ nke karama iko), dị mfe iburu ma jiri ya mee ihe, na-eri obere ume na mmepụta, na enweghị ike ime ya, na-adịghị agbanwe agbanwe ma na-eguzogide ọgwụ. maka acid na alkalis.

N'ime afọ ndị na-adịbeghị anya, ọ ghọwo ihe dị mkpa na-ejuputa ihe ọṅụṅụ carbonated, tii, ihe ọṅụṅụ mkpụrụ osisi, mmiri ọṅụṅụ ngwugwu, mmanya na soy sauce, wdg Na mgbakwunye, ndị na-ehicha ihe, shampoos, mmanụ nri, condiments, nri ụtọ, ọgwụ, ihe ịchọ mma. , na ihe ọṅụṅụ na-aba n'anya ejiriwo ọnụ ọgụgụ buru ibu na karama nkwakọ ngwaahịa.

HDPEPolyethylene njupụta dị elu

A na-ejikarị eme ihe: ngwaahịa nhicha, ngwaahịa ịsa ahụ, wdg.
Ngwongwo plastik maka ihicha ngwaahịa, ngwaahịa ịsa ahụ, akpa rọba a na-eji na nnukwu ụlọ ahịa na ebe ịzụ ahịa na-ejikarị ihe a eme ihe, nwere ike iguzogide 110 ℃ okpomọkụ dị elu, akara na akpa rọba nri nwere ike iji jide nri.Enwere ike ịmegharị ihe mkpuchi plastik maka ihicha ngwaahịa na ngwaahịa ịsa ahụ mgbe ejiri nlezianya kpochaa ya, ma ihe ndị a anaghị ehichapụ nke ọma, na-ahapụ ihe ndị fọdụrụ na ngwaahịa nhicha mbụ, na-atụgharị ha n'ime ebe a na-azụ maka nje bacteria na nhicha na-ezughị ezu, n'ihi ya, ọ kacha mma ka ị ghara ime ya. megharịa ha.
PE bụ plastik a na-ejikarị eme ihe na ụlọ ọrụ na ndụ, a na-ekewakwa ya na ụdị abụọ: polyethylene dị elu (HDPE) na obere njupụta polyethylene (LDPE).HDPE nwere ebe mgbaze dị elu karịa LDPE, siri ike ma na-eguzogide mbibi nke mmiri mmiri na-emebi emebi.

LDPE dị ebe niile na ndụ ọgbara ọhụrụ, mana ọ bụghị n'ihi arịa ndị e ji eme ya, mana n'ihi akpa rọba ị nwere ike ịhụ ebe niile.Ọtụtụ n'ime akpa rọba na ihe nkiri bụ nke LDPE.

LDPE (Polyethylene njupụta dị ala)

A na-ejikarị eme ihe: ihe nkiri nri, wdg.
Ihe nkiri ihe nkiri, ihe nkiri plastik, wdg bụ ihe a na-eme.Okpomọkụ na-eguzogide adịghị ike, na-emekarị, ruru eru PE nri ihe nkiri na okpomọkụ nke ihe karịrị 110 ℃ ga-apụta na-ekpo ọkụ gbazee onu, ga-ahapụ ụfọdụ ahụ mmadụ enweghị ike decompose na plastic gị n'ụlọnga.Ọzọkwa, mgbe nri na-ekpo ọkụ na ihe nkiri nri, griiz dị na nri nwere ike igbari ihe ndị na-emerụ ahụ na fim ahụ ngwa ngwa.Ya mere, ọ dị mkpa iji wepụ ihe mkpuchi plastik na nri na ngwa ndakwa nri na mbụ.

PP (polypropylene)

A na-ejikarị eme ihe: igbe nri ehihie microwave
A na-eji igbe nri ehihie Microwave mee ihe a, nke na-eguzogide 130 Celsius ma nwee nghọta na-adịghị mma.Nke a bụ naanị igbe rọba nke enwere ike itinye n'ime ngwa ndakwa nri ma nwee ike ijikwa ya mgbe ejiri nlezianya kpochaa ya.

Ọ dị mkpa iburu n'obi na ụfọdụ ngwa ngwa ngwa ngwa bụ nke PP 05, ma mkpuchi bụ nke PS 06, nke nwere nghọta dị mma ma ọ dịghị eguzogide okpomọkụ dị elu, n'ihi ya, a pụghị itinye ya na ngwa ndakwa nri yana akpa.Iji nọrọ n'akụkụ nchekwa, wepụ ihe mkpuchi ahụ tupu itinye akpa ahụ na ngwa ndakwa nri.
Enwere ike ikwu na PP na PE bụ ụmụnne abụọ, ma ụfọdụ ihe anụ ahụ na nke arụ ọrụ dị mma karịa PE, ya mere, ndị na-emepụta karama na-ejikarị PE mee ahụ nke karama ahụ, ma jiri PP na-esi ike na ike dị ukwuu mee okpu na aka. .

PP nwere ebe mgbaze dị elu nke 167 Celsius ma ọ na-eguzogide okpomọkụ, na ngwaahịa ya nwere ike ịgbazite uzuoku.Karama ndị a na-emekarị site na PP bụ mmiri ara ehi soy na mmiri ara ehi osikapa, yana karama maka 100% ihe ọṅụṅụ mkpụrụ osisi dị ọcha, yoghurt, ihe ọṅụṅụ ihe ọṅụṅụ, mmiri ara ehi (dị ka pudding), wdg. nnukwu akpa, dị ka bọket, bins, ebe a na-asa ákwà, nkata, nkata, wdg, na-emekarị site na PP.

PS (polystyrene)

A na-ejikarị eme ihe: ọkwá nke igbe noodle, igbe nri ngwa ngwa
Ihe eji eme ọkwá nke noodles na igbe nri ngwa ngwa ụfụfụ.Ọ na-ekpo ọkụ na oyi na-eguzogide, ma enweghị ike itinye ya na oven microwave iji zere ntọhapụ nke kemịkal n'ihi oke okpomọkụ.E kwesịghị iji ya mee ihe maka acid siri ike (dịka ihe ọṅụṅụ oroma) ma ọ bụ ihe ndị dị na alkaline, dị ka polystyrene, nke dị njọ maka ụmụ mmadụ, nwere ike imebi ya.Ya mere, ị kwesịrị ịzere ịkwakọba ihe oriri na-ekpo ọkụ n'ime akpa nri ngwa ngwa dị ka o kwere mee.
PS nwere obere mmịnye mmiri ma kwụsie ike nke ukwuu, yabụ enwere ike ịkpụzi ya, pịa ya, extruded ma ọ bụ kpụ ọkụ n'ọnụ.Enwere ike ịkpụzi ya n'ụdị injection, pịa kpụrụ, extruded na thermoformed.A na-ekewakarị ya dị ka ụfụfụ ma ọ bụ enweghị ụfụfụ dabere na ọ megoro usoro "ụfụfụ".

PCna ndị ọzọ

A na-ejikarị eme ihe: karama mmiri, iko, karama mmiri ara ehi
PC bụ ihe a na-ejikarị eme ihe, karịsịa n'ịmepụta karama mmiri ara ehi na iko oghere, ọ bụkwa arụmụka n'ihi na ọ nwere Bisphenol A. Ndị ọkachamara na-arụtụ aka na na tiori, ọ bụrụhaala na BPA bụ 100% gbanwee n'ime ihe owuwu plastik n'oge mmepụta nke. PC, ọ pụtara na ngwaahịa ahụ enweghị BPA kpamkpam, ọ bụghị ikwupụta na ewepụtaghị ya.Otú ọ dị, ọ bụrụ na a gbanweghị obere BPA n'ime nhazi plastik nke PC, enwere ike ịhapụ ya na nri ma ọ bụ ihe ọṅụṅụ.Ya mere, ekwesịrị ịkpachara anya mgbe ị na-eji akpa rọba ndị a.
Ka okpomọkụ nke PC dị elu, ka a na-ewepụta BPA na ngwa ngwa na-ahapụ ya.Ya mere, a gaghị etinye mmiri ọkụ na karama mmiri PC.Ọ bụrụ na ketulu gị bụ nọmba 07, ihe ndị a nwere ike ibelata ihe ize ndụ: Ejila ya kpoo ya mgbe ị na-eji ya ma ghara ikpughe ya na ìhè anyanwụ.Ejila kettle dị n'ebe a na-asa efere ma ọ bụ efere efere.

Tupu iji ya na nke mbụ, saa ya na mmiri soda na mmiri ọkụ wee kpoo ya nke ọma na okpomọkụ nke ụlọ.Ọ bụ ihe amamihe dị na ya ịkwụsị iji akpa ahụ ma ọ bụrụ na ọ nwere ọdịda ma ọ bụ nkwụsịtụ ọ bụla, n'ihi na ngwaahịa rọba nwere ike iburu nje bacteria n'ụzọ dị mfe ma ọ bụrụ na ha nwere elu dị mma.Zere iji arịa rọba mejọrọ eme ihe ugboro ugboro.