PPR yeeb nkab yog kub yaj kub ntawm 260 degrees mus rau 280 degrees los yog li ntawd, nyob rau hauv no kub ntau yam, los xyuas kom meej lub PPR yeeb nkab kev twb kev txuas nyhuv, lub lig tsis yooj yim rau tawg.
Cov ntsiab lus tshwj xeeb yog raws li hauv qab no: Yog tias PPR yeeb nkab kub yaj kub hauv qab 260 degrees mus rau 280 degrees thaum lub sijhawm no, tsis tuaj yeem yaj, lossis lub sijhawm yuav ntev dua, ua rau txo qis ntawm PPR txuas sealing nyhuv. Yog hais tias lub melting kub yog siab dhau lawm, thiab yooj yim rau coj kev ruaj ntseg zais txaus ntshai rau lub raj xa dej, thiab xyuam xim rau. Tsis tas li ntawd, thaum siv kub yaj nplaum rau PPR yeeb nkab kub yaj, xav tau kev khiav hauj lwm raws li qhov taw qhia teeb ntawm lub cuab yeej. Yog hais tias lub teeb liab flashing nyob rau hauv tshav kub, thiab lub teeb ntsuab nyob rau hauv lub xeev ntawm qhov kub thiab txias, thaum tshwm ob zaug ib lub teeb ntsuab, yuav siv tau ib txwm.