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Ncha ntutu PITA karama

2026-01-30
Mgbe anyị na-ewere karama shampoo a na-ejikarị eme ihe, a ga-enwe akara PET n'ala karama ahụ, nke na-egosi na ngwaahịa a bụ karama PET. A na-ejikarị karama PET eme ihe n'ụlọ ọrụ nlekọta onwe onye, ​​​​ọ bụkwa nnukwu ikike. Karama PET bụ akpa plastik a na-enweta site na nhazi ihe plastik PET site na usoro otu nzọụkwụ ma ọ bụ nke abụọ. Plastik PET nwere njirimara nke ịdị fechaa, doro anya nke ukwuu, ma na-eguzogide mmetụta na mgbawa.

A makwaara PET, ma ọ bụ polyethylene terephthalate, dị ka polyester. Aha Bekee ya bụ Polyethylene Terephthalate, nke a na-emepụta site na mmeghachi omume polymerization (condensation) nke ihe abụọ kemịkalụ: terephthalic acid (PTA) na ethylene glycol (EG). Preforms bụ ihe ndị a na-agba ntụtụ. Dịka ngwaahịa ọkara emechara maka ịgbatị na ịkpụzi bịaxial na-esote, olu nke preform ahụ na-akpụ n'oge usoro ịkpụzi blaaxial, nha ya agaghị agbanwekwa n'oge ikpo ọkụ na ịgbatị/ịkpụzi blaa. Nha, ibu, na ọkpụrụkpụ mgbidi nke preform bụ ihe ndị a ga-elebara anya nke ọma n'oge usoro ịkpụzi blaasta.

Mgbe a na-akwadebe karama ndị a kpụrụ akpụ, a na-ebu ụzọ gbanye ibe PET n'ime preform ahụ. Ọ dị mkpa ka oke ihe ndị a emegharị emegharị ghara ịdị oke elu (ihe na-erughị 5%), oge imegharị emegharị ekwesịghịkwa ịgafe abụọ. Ibu molekul na viscosity ekwesịghị ịdị oke ala (ibu molekul 31,000 - 50,000, viscosity dị n'ime ya 0.78 - 0.85 cm³/g). Dịka Iwu Nchekwa Nri Mba si kwuo, a machibidoro iji ihe ndị a emegharị emegharị maka nkwakọ nri na ọgwụ. A ga-echekwa preforms ndị a kpụrụ akpụ maka ihe karịrị awa 24 tupu ejiri ha. A ga-echekwa preforms ndị a na-ejighị eme ihe mgbe a kpochara ha ọkụ karịa awa 48 tupu e kpoo ha ọkụ ọzọ. Oge nchekwa nke karama ekwesịghị ịgafe ọnwa isii. Ogo nke preform dabere na ịdị mma nke ihe PET, yabụ ọ dị mkpa ịhọrọ ihe ndị dị mfe ịgbasa ma mepụta, yana ịmepụta usoro ịkpụzi preform ezi uche dị na ya. Nnwale ndị e mere na-egosi na ihe ndị e ji ihe ndị e si na ihe ndị e si na ha ebubata nweta nwere otu viscosity dị mfe ịfụ ebu karịa nke e ji ihe ndị e ji eme ihe n'ụlọ mee. Agbanyeghị, maka otu ụdị ihe ndị e ji eme ihe, ụbọchị mmepụta dị iche iche nwere ike ịchọ usoro ịkpụ ihe dị iche iche. Ọdịdị nke ihe ndị e ji eme ihe na-ekpebi ihe isi ike nke usoro ịkpụ ihe. Ihe achọrọ maka ihe ndị e ji eme ihe bụ ịdị ọcha, nghọta, enweghị ihe na-adịghị ọcha, enweghị agba, ogologo ebe a na-etinye ihe kwesịrị ekwesị, na obere ihe gbara ya gburugburu.

Karama ihe PP na PE na-abụkarị agba siri ike, ebe ihe PETG, PET, na PVC na-apụta ìhè ma ọ bụ na-acha ọcha, ha na-egosikwa ìhè nke ọma, a naghịkwa eji agba siri ike eme ihe ugboro ugboro. A pụkwara ịgba karama ihe PET agba. E nwere ebe dị nkọ n'ala karama ahụ a na-agba, nke na-enwu gbaa n'okpuru ìhè. Ala nke karama ahụ a na-agba ntụtụ nwere akara njikọ. Ihe ndị bụ isi maka karama a na-agba ọkụ gụnyere ihe mgbochi dị n'ime (a na-ejikarị eme ihe maka ihe PP na PE), okpu mpụta (a na-ejikarị eme ihe maka PP, ABS, na acrylic, a na-ejikwa ya na ihe ndị a na-agba ọkụ eletrik, nke a na-ejikarị eme ihe maka karama toner), mkpuchi isi mgbapụta (a na-ejikarị eme ihe maka ude na ude), mkpuchi flip, na mkpuchi snap (a na-ejikarị eme ihe na nnukwu eriri kemịkalụ kwa ụbọchị).