... , COC etc. 3. good heat seal filter paper for tea bags Our factory specially produce food grade tea ... bag & coffee filter paper which with good water absorption, excellent air permeability ... ,18gsm,21gsm and 23gsm,25gsm,28gsm,etc 2.Roll width: 120mm,125mm,145mm,160mm,485mm etc. ... -115 centigrade degree.6. Machine: our filter paper can suitable very well on the high speed ...