Lub raj mis yas yog lub taub ntim yas ua los ntawm PET, PE thiab PP, ntxiv cov kuab tshuaj organic, tom qab cua sov ntawm qhov kub, los ntawm cov yas yas, los ntawm tshuab moulding, nyem tshuab, lossis txhaj tshuaj moulding.
Lub taub ntim yas tsis yooj yim rau tawg, tsis muaj nqi, siab pom, zaub mov qib raw khoom thiab lwm yam.
Thaum siv cov khoom yas, yuav tsum tau saib xyuas tshwj xeeb kom tsis txhob muaj cov kua qaub, tshuaj ntxuav, thiab lwm yam, tsis txhob raug tshav ncaj, kub, thiab lwm yam, kom tsis txhob muaj cov tshuaj lom neeg.
Tsis tas li ntawd, thaum koj yuav cov rooj tog zaum yas, koj yuav tsum xaiv cov khoom siv nrog cov ntawv pov thawj PE (polyethylene) lossis PP (polypropylene), cov qauv ua kom zoo nkauj tsawg dua, xim tsis muaj xim, tasteless, du nto ntawm cov khoom yas.
Muaj ntau txoj hauv kev los ua cov tshuaj polyethylene, qhov feem ntau ntawm cov uas yog cov tshuaj polymerization ntawm ethylene ntawm qhov kub ntawm 200-300 a thiab lub zog ntawm 1000-2000 atmospheres.
Hauv polyethylene, nws tsis yog deev nrog lwm cov tshuaj.
Cov polyethylene ntom uas ua rau yog li ntawd tsawg, qhov zoo ntawm cov khoom siv yog mos, rau lub hnub ci, huab cua, noo noo thiab tshuaj lom neeg, muaj kev ruaj khov dua, tsis xav tau ntxiv stabilizer, plasticizer thiaj li, thiab tus neeg sawv cev khov kho thiab plasticizer yog lom feem ntau los yog virulence.