PVC foaming pem teb extrusion kab yog ib hom tshiab ntawm cov khoom siv ntoo yas sib xyaw ua ke uas zoo rau ib puag ncig, hauv kev tsim khoom, cov fiber ntau density tsim los ntawm cov txheej txheem ntawm ntoo mus rau phenol, koom nrog cov khoom siv rov ua dua tshiab ua cov khoom siv ntoo yas sib xyaw, thiab tom qab ntawd mus rau pab pawg tsim khoom extrusion los ua ntoo yas pem teb, ntoo yas pem teb nrog 100% rov ua dua tshiab thiab siv tau dua tshiab, nws cov thev naus laus zis tsim khoom kuj suav hais tias yog lub zog rau kev tsim kho tshiab ntawm thev naus laus zis, muaj kev cia siab dav hauv kev lag luam thiab kev pabcuam zoo thiab kev pabcuam hauv zej zog.