Kev Taw Qhia Luv Luv Txog Cov Txheej Txheem Tsim Khoom ntawm PET Thawv
Kev Taw Qhia
Polyethylene Terephthalate, feem ntau hu ua PET, yog ib hom yas uas tau dhau los ua qhov tseem ceeb hauv kev lag luam ntim khoom. Paub txog nws lub zog, pob tshab, thiab kev siv rov qab tau, PET yog siv dav los tsim cov thawv rau dej haus, khoom noj, tshuaj, thiab lwm yam khoom. Cov blog no muab cov lus qhia luv luv ntawm cov txheej txheem tsim cov thawv PET, los ntawm cov khoom siv raw mus rau cov khoom tiav..
1. Kev Tsim Khoom Siv Raw
Cov txheej txheem tsim khoom pib nrog kev tsim cov PET resin. PET yog ib qho polymer ua los ntawm terephthalic acid (TPA) thiab ethylene glycol (EG). Ob hom tshuaj no dhau los ntawm kev ua polymerization los ua cov PET pellets, uas yog cov khoom siv raw rau kev tsim cov thawv PET.
2. Kev Tsim Khoom Ua Ntej
Kauj ruam tom ntej hauv cov txheej txheem yog kev tsim cov preforms. Preforms yog cov khoom me me, zoo li lub raj mis kuaj ntawm PET uas tom qab ntawd raug tshuab mus rau hauv lawv cov duab kawg. Kev tsim cov preforms suav nrog:
(1) Kev ziab cov PET Pellets: Cov pellets PET raug ziab kom tshem tawm cov dej noo, uas tuaj yeem cuam tshuam rau qhov zoo ntawm cov khoom kawg.
(2) Kev Txhaj Tshuaj Molding: Cov pellets qhuav raug pub rau hauv lub tshuab txhaj tshuaj molding, qhov chaw uas lawv raug yaj thiab txhaj rau hauv cov pwm kom ua cov preforms. Tom qab ntawd cov preforms raug txias thiab raug thawb tawm ntawm cov pwm.
3. Tshuab Moulding
Tshuab pwm yog cov txheej txheem uas cov preforms raug hloov mus ua cov thawv PET kawg. Muaj ob hom txheej txheem pwm tseem ceeb: txhaj tshuaj ncab pwm (ISBM) thiab extrusion pwm (EBM).
Kev Txhaj Tshuaj Ncab Tshuab Moulding (ISBM):
(1) Cua sov: Cov preforms raug cua sov rau qhov kub tshwj xeeb kom ua rau lawv yooj ywm.
(2) Kev ncab thiab tshuab: Lub preform uas tau ua kom sov lawm muab tso rau hauv ib lub pwm. Ib tug pas nrig ncab mus rau hauv lub preform, thiab ncab nws mus raws li qhov ntev. Tib lub sijhawm, cua siab raug tshuab mus rau hauv lub preform, thiab nthuav nws kom haum rau lub pwm lub duab.
(3) Txias: Lub thawv tshiab uas tsim tau raug txias thiab tshem tawm ntawm pwm.
Kev Siv Tshuab Moulding (EBM):
(1) Kev rho tawm: Molten PET yog extruded rau hauv ib lub raj, hu ua parison.
(2) Tshuab: Lub parison raug muab tso rau hauv ib lub pwm thiab cua tshuab kom haum rau lub pwm lub duab.
(3) Txias: Lub thawv txias thiab raug rho tawm ntawm lub pwm.
4. Kev Tswj Xyuas Zoo thiab Kev Ntsuas
Kev tswj xyuas zoo yog qhov tseem ceeb thoob plaws hauv cov txheej txheem tsim khoom kom ntseeg tau tias cov thawv PET ua tau raws li cov qauv xav tau. Muaj ntau yam kev sim los xyuas seb puas muaj zog, meej, thiab tsis xau. Cov tshuab tsis siv neeg thiab kev tshuaj xyuas tes siv los txheeb xyuas thiab kho qhov tsis zoo.
5. Kev Sau Npe thiab Kev Ntim Khoom
Thaum cov thawv dhau qhov kev sim tswj xyuas zoo lawm, lawv yuav mus rau theem kev sau ntawv thiab ntim khoom. Cov ntawv lo rau raug siv ntau txoj kev sib txawv, xws li cov ntawv nplaum, cov tes tsho ntsws, lossis luam ntawv ncaj qha. Cov thawv uas muaj ntawv lo ces raug ntim thiab npaj rau kev faib tawm.
Xaus lus
Cov txheej txheem tsim cov thawv PET yog kev sib xyaw ua ke ntawm chemistry thiab engineering. Txij li thaum cov khoom siv raw ua ke mus rau qhov kawg ntim, txhua kauj ruam yog tsim los ua kom zoo, txhim khu kev qha, thiab muaj kev nyab xeeb. PET qhov kev hloov pauv tau yooj yim thiab kev siv rov qab ua rau nws yog qhov kev xaiv zoo hauv ntau yam lag luam, uas qhia txog qhov tseem ceeb ntawm cov khoom siv hauv cov kev daws teeb meem niaj hnub no.
Cov Kev Xav Kawg
Kev nkag siab txog cov txheej txheem tsim cov thawv PET tsis yog tsuas yog qhia txog qhov nyuaj thiab qhov tseeb xwb tab sis kuj qhia txog qhov tseem ceeb ntawm kev tsim kho tshiab thiab kev ruaj khov hauv kev lag luam ntim khoom. Thaum thev naus laus zis nce qib, peb tuaj yeem cia siab tias yuav muaj kev txhim kho ntxiv hauv kev ua haujlwm zoo thiab kev cuam tshuam rau ib puag ncig ntawm kev tsim cov thawv PET.