... absorption, excellent air permeability, high tensile strength and nice heat seal performance, suitable for packing tea, coffee, herbs, condiment and ... 16.5gsm,18gsm,21gsm and 23gsm,25gsm,28gsm,etc 2.Roll width: 120mm,125mm,145mm,160mm,485mm etc. this can be ... 450mm-500mm,according to clients' special requirements. 5. The heat seal temperature: 95-115 centigrade degree.6. Machine: our filter paper ...