1. Cov khoom muaj pes tsawg leeg
Cov ntawv PVC yog ua los ntawm cov yas thiab cov tshuaj chlorine, ua rau lawv nyuaj thiab muaj zog. Lawv feem ntau siv rau hauv kev tsim kho, kos npe thiab hluav taws xob kev lag luam vim tias lawv muaj peev xwm tiv taus tshuaj lom neeg, cuam tshuam thiab ya raws. Ntawm qhov tod tes, cov ntawv PET yog ua los ntawm cov thermoplastic polymer resins, ua rau lawv pob tshab, hloov tau yooj yim thiab hnav. Cov ntawv PET tau siv dav hauv kev ntim khoom, luam ntawv thiab ntawv cim kev lag luam.
2. Cov tsos thiab xim txawv
Cov nplooj ntawv PVC muaj qhov tuab tuab thiab ntau dua opaque ntau dua li cov nplooj ntawv PET. Lawv tuaj nyob rau hauv ntau yam ntxoov xws li dawb, grey thiab dub. Cov nplooj ntawv opaque feem ntau yog siv los ua kev faib lossis cov ntxaij vab tshaus. PET nplooj ntawv, ntawm qhov tod tes, muaj qhov ci thiab pob tshab. Lawv feem ntau tsis muaj xim lossis tuaj xim zoo li daj, xiav thiab ntsuab.
3. Tshuaj thiab kub tsis kam
Cov ntawv PVC muaj cov tshuaj tiv thaiv zoo thiab tsim nyog siv rau hauv ib puag ncig uas yuav tsum muaj tshuaj tiv thaiv. Txawm li cas los xij, lawv muaj peev xwm ua kom sov tsawg, uas ua rau lawv tsis haum rau qee qhov kev siv kub-kub. Cov ntawv PET muaj kev tiv thaiv zoo rau feem ntau cov tshuaj, thiab qee qib tuaj yeem tiv taus qhov kub thiab txias txog 220 degrees Celsius. Cov ntawv PET yog cov khoom siv rau kev ntim khoom vim tias lawv muaj kev nyab xeeb rau cov khoom noj thiab kev siv tshuaj kho mob.
4. Kub
Thaum kub hnyiab, cov pa luam yeeb dub, thiab cov ntxhiab tsw ntxhiab tsw muaj zog thiab muaj cov pob zeb dub ntawm ntug ntawm qhov hluav taws kub yog PVC ntawv, vim PVC ntawv yog polyvinyl chloride molecule, uas yog combustible thiab yuav cia li tua thaum tawm hauv qhov hluav taws kub. Daim ntawv PET tseem yuav kub hnyiab hauv qab nplaim taws, nrog cov pa luam yeeb dub me me thiab lub teeb, thiab tseem yuav hlawv txawm tias tom qab tawm hauv qhov hluav taws kub.
5. Folding mark identification
Txiav ib qho me me ntawm txhua yam khoom thiab quav lawv hauv ib nrab. Koj yuav pom tias feem ntau cov ntawv PVC yuav tsim cov creases dawb, yog li cov uas muaj cov cim dawb ntawm cov quav yog feem ntau cov ntawv PVC. Cov uas tsis pom tseeb lossis yuav luag pom tsis pom tseeb yog cov ntawv PET.
