... super advantage of high tensile strength, good air penetrationcharacters. It is widely used in tea,coffee, medicine etc. filter bag packing. ... HEAT SEAL TEABAG FILTER PAPER (Signal gloss/Double rough)UNITSPECIFICATIONSSubstanceg/16. ... ,6*8cm,7*7cm,9.5x6.5cm,8x12cm5.The heatseal temperature:135-150 centigrade degree.6.Usage: pack tea, herbs, ...