Nyob rau xyoo tas los no, kev lag luam kev zoo nkauj thiab kev saib xyuas tus kheej tau pom tias muaj kev thov ntau ntxiv rau cov kev daws teeb meem ntim khoom uas ruaj khov thiab siv tau ntau yam. Qhov sib txawv no tau ua rau muaj kev nyiam ntawm PE (polyethylene) ntau ntxiv. raj tshuaj pleev ib centim khoom, uas tsis yog tsuas yog zoo rau ib puag ncig xwb tab sis kuj tsim nyog rau kev siv rau txhua lub caij. Tsab ntawv no lub hom phiaj yog los tshawb nrhiav cov yam ntxwv thiab cov txiaj ntsig ntawm PE raj tshuaj pleev ib cekev ntim khoom thiab vim li cas nws thiaj li yog qhov kev xaiv zoo tshaj plaws rau cov hom lag luam thoob plaws kev zoo nkauj thiab kev saib xyuas tus kheej.
Cov raj mis PE rau cov khoom siv pleev ib ce yog tsim los kom yooj yim thiab siv tau yooj yim rau cov neeg siv khoom. Cov khoom siv no tsis hnyav thiab ruaj khov, ua rau nws yooj yim nqa thiab haum rau kev mus ncig. Qhov yooj ywm ntawm cov raj PE ua rau yooj yim faib cov khoom, ua kom muaj kev pov tseg tsawg kawg nkaus thiab tsis muaj kev ntxhov siab. Tsis tas li ntawd, PE paub txog nws txoj kev tiv thaiv dej noo, uas pab tiv thaiv kev ua tiav ntawm cov khoom thiab tswj nws cov txiaj ntsig, tsis hais lub caij twg los xij.
Ib qho ntawm cov txiaj ntsig tseem ceeb ntawm PE raj tshuaj pleev ib ceKev ntim khoom yog nws qhov kev hloov pauv mus rau ntau yam xwm txheej ib puag ncig. Txawm tias nws kub thiab noo lossis txias thiab qhuav, PE raj muab kev tiv thaiv zoo rau cov ntsiab lus sab hauv. Qhov no ua rau lawv yog qhov kev xaiv zoo tshaj plaws rau ntau yam khoom zoo nkauj thiab khoom siv tu tus kheej, suav nrog cov tshuaj pleev, tshuaj pleev, gels, thiab serums. Cov neeg siv khoom tuaj yeem ntseeg siab tias lawv cov khoom nyiam yuav nyob ruaj khov thiab khaws cia zoo, tsis hais huab cua lossis huab cua li cas los xij.
Tsis tas li ntawd, PE raj tshuaj pleev ib ceKev ntim khoom sib haum nrog kev lag luam tsom mus rau kev ruaj khov. Raws li cov khoom siv rov ua dua tshiab, PE txo qhov cuam tshuam rau ib puag ncig ntawm cov khib nyiab ntim khoom thiab txhawb nqa kev lag luam ncig. Cov hom lag luam uas muab qhov tseem ceeb rau cov kev xaiv ntim khoom zoo rau ib puag ncig tab tom tig mus rau PE raj ua qhov kev xaiv uas muaj lub luag haujlwm uas cuam tshuam nrog cov neeg siv khoom uas paub txog ib puag ncig. Los ntawm kev xaiv PE ntim khoom, cov hom lag luam tuaj yeem qhia lawv txoj kev cog lus rau kev ruaj khov thiab nyiam rau kev lag luam loj hlob ntawm cov neeg siv khoom uas xav txog ib puag ncig.
Lwm qhov tseem ceeb ntawm PE raj tshuaj pleev ib ceKev ntim khoom yog nws qhov sib xws nrog ntau yam kev kho kom zoo nkauj thiab kev luam ntawv. Qhov no tso cai rau cov hom lag luam los tsim cov qauv tsim kom pom tseeb thiab sib txuas lus cov ntaub ntawv khoom zoo. Txawm hais tias nws yog cov xim ci ntsa iab, cov duab kos zoo nkauj, lossis cov ntsiab lus tseem ceeb ntawm cov khoom, PE raj muaj chaw dav rau cov duab kos duab muaj tswv yim thiab muaj txiaj ntsig. Qhov kev hloov pauv no hauv kev tsim qauv ua rau pom kev zoo ntawm cov ntim khoom thiab pab txhawb rau lub npe lag luam muaj zog hauv kev ua lag luam.
Kev ua haujlwm ntawm PE raj tshuaj pleev ib ceKev ntim khoom nthuav dav tshaj qhov yooj yim ntawm cov neeg siv khoom thiab kev xav txog ib puag ncig. Los ntawm kev pom ntawm kev tsim khoom, PE raj muaj cov txheej txheem tsim khoom tsim nyog thiab kev ua haujlwm sau thiab kaw zoo. Cov khoom siv qhov yooj ywm thiab lub zog ua rau nws zoo rau cov kab ntau lawm tsis siv neeg, ua rau muaj kev ua haujlwm zoo tshaj plaws thiab txo cov nqi tsim khoom. Qhov no ua rau PE raj ntim khoom kom zoo nkauj yog qhov kev xaiv zoo rau cov npe uas tab tom nrhiav ob qho tib si zoo thiab tus nqi tsim nyog hauv lawv cov kev daws teeb meem ntim khoom.
Xaus lus, EP raj tshuaj pleev ib ceKev ntim khoom sawv tawm ua ib qho kev xaiv ntau yam thiab ruaj khov uas zoo rau kev siv rau txhua lub caij. Nws lub zog ruaj khov, tiv taus dej noo, thiab hloov pauv tau rau ntau yam huab cua ua rau nws yog qhov kev xaiv txhim khu kev qha rau cov hom lag luam uas tsom mus rau kev xa cov khoom zoo rau cov neeg siv khoom, tsis hais lub sijhawm twg ntawm lub xyoo. Los ntawm kev siv PE ntim khoom, cov hom lag luam tuaj yeem sib haum nrog cov txiaj ntsig ntawm kev ruaj khov, thaum tseem siv nws cov txiaj ntsig zoo thiab kev zoo nkauj los txhim kho lawv cov khoom muag. Raws li kev lag luam kev zoo nkauj thiab kev saib xyuas tus kheej txuas ntxiv mus, nws yog qhov tseeb tias PE raj tshuaj pleev ib cekev ntim khoom tau npaj los ua lub luag haujlwm tseem ceeb hauv kev ua kom tau raws li qhov xav tau ntawm ob lub npe thiab cov neeg siv khoom.
Lub sijhawm tshaj tawm: Lub Ib Hlis-19-2024