PE Yeeb Nkab Kub Melt Sijhawm

Rau cov kav dej pe nrog phab ntsa thickness tsawg dua 4.5 hli, nws lub sij hawm thermal melting yuav tsum tau tswj tsis pub dhau 45 vib nas this, nrog phab ntsa thickness ntawm 4.5 hli mus rau 7 hli, tswj nyob rau hauv 45 vib nas this mus rau 70 vib nas this, thiab phab ntsa thickness ntawm 7. mm rau 12 vib nas this. mm, lub sij hawm yuav tsum tau tswj ntawm 70 vib nas this thiab 120 vib nas this. Nws tuaj yeem pom tias lub sijhawm kub melting ntawm cov yeeb nkab pe yog txiav txim siab los ntawm phab ntsa tuab, thiab lub sijhawm tshwj xeeb kub-melting yog raug rau phab ntsa thickness ntawm cov yeeb nkab.