heat seal tea bag filter paper 1. Used for packing tea, coffee, chinese medicine,etc. 2. SGS, COC etc. 3. ... filter paper which with good water absorption, excellent air permeability, high tensile strength and nice heat seal performance, suitable for packing tea, coffee ... : 16.5gsm,18gsm,21gsm and 23gsm,25gsm,28gsm,etc 2.Roll width: 120mm,125mm,145mm,160mm,485mm etc. this can be ...