ʻO ka papa co-extrusion he ʻenehana hou.ʻOkoʻa mai nā papa puaʻa ʻē aʻe, aia ʻelua mau ʻāpana o ka ʻāʻī ma nā ʻaoʻao ʻelua o ka papa puaʻa co-extruded.
Hōʻike ʻia ia e ka ʻili maʻemaʻe loa a pili i ka papa pahu pahu PVC kiʻekiʻe.ʻOi aku ka 5% o ke kumukūʻai ma mua o nā ʻano puaʻa PVC ʻē aʻe