Qhov ob tsis sib piv, vim tias PET thiab PP yog ob yam khoom sib txawv ntawm cov khoom siv hlwv, thiab cov khoom siv tsis zoo ib yam, yog li lub thawv hlwv ua los ntawm ob cov ntaub ntawv no kuj txawv.
Cov khoom tseem ceeb ntawm PET yog polyethylene glycol vinegar, uas feem ntau yog siv rau hauv ntim cov dej ntxhia hauv fwj, carbonated dej haus, thiab lwm yam. Nws tsuas tuaj yeem tiv taus qhov kub txog li 70 degree. Thaum qhov kub siab tshaj qhov ntsuas kub no, nws yuav deform thiab tso tawm cov khoom tsim kev puas tsuaj rau tib neeg lub cev, tsis tuaj yeem raug tshav ntuj, thiab tsis tuaj yeem muaj cawv thiab roj. Yog tias siv ntau tshaj 10 lub hlis, nws tseem yuav tso tawm DEHP, uas muaj cov teebmeem carcinogenic.
PP khoom, uas yog polypropylene. Cov yas, uas muaj cov ntsiab lus melting ntawm 167 degree thiab feem ntau yog siv hauv cov kua mis, kua txiv hmab txiv ntoo thiab cov khoom siv microwave thermal, tsuas yog cov yas uas tuaj yeem siv los tsim cov cua sov microwave. Nws tseem tuaj yeem rov siv dua tom qab ntxuav. Tam sim no, nws tau raug lees paub tias yog cov khoom siv muaj kev nyab xeeb thiab ntau yam thiab tau dhau los ua cov khoom xaiv hauv ntau lub hoobkas thiab kev lag luam.
Piv txwv li, nyob rau hauv cov nqe lus ntawm cov xim, cov xim ntawm cov khoom PP yog xim dawb, dub los yog xim ntuj (uas yog, milky dawb), nyob rau hauv daim ntawv blister PP cov ntaub ntawv tsis yog pob tshab, pob tshab feem ntau tsuas yog hom translucent milky dawb. ; PET feem ntau tsuas yog pob tshab hauv cov xim, thiab dub lossis dawb tsis tshua siv.
Nyob rau hauv cov nqe lus ntawm lub cev khoom, lub melting point ntawm PP cov ntaub ntawv yog siab li 167 degree, uas yog tsuas yog blister cov ntaub ntawv uas yuav tsum tau rhuab nyob rau hauv lub microwave qhov cub, thiab tseem muaj peev xwm tiv taus qhov kub thiab txias ntawm rho tawm 35 degree, yog li PP blister ntim. lub thawv yog tsim nyog rau khaws cia cov zaub mov siav, cov nqaij txias, nqaij nruab deg thiab lwm yam khoom noj uas yuav tsum tau muab rhaub lossis tso rau hauv tub yees; Cov khoom siv ntawm PET tau yooj yim deformed thaum rhuab mus rau 70 degree, thiab nws yuav tsim cov khoom tsim kev puas tsuaj rau tib neeg lub cev, yog li lub thawv PET blister yog tsim rau cov txiv hmab txiv ntoo, zaub zaub xam lav thiab lwm yam uas tsis tas yuav tsum tau rhaub kom noj.
Hauv luv luv, ob qho tib si tsiaj thiab PP lub thawv khoom noj muaj kev nyab xeeb thiab tsim nyog rau qib zaub mov. Lawv yog cov ntim khoom uas tuaj yeem cuam tshuam ncaj qha nrog zaub mov. Txawm li cas los xij, kev xaiv tshwj xeeb ntawm kev siv yuav tsum tau txiav txim siab raws li qhov xwm txheej. Yog tias koj xav tau kom sov cov zaub mov hauv lub thawv khoom noj, xaiv cov khoom PP. Yog tias koj tsis xav tau cua sov, koj tuaj yeem xaiv lub thawv khoom noj tsiaj thiab PP.
